It would seem that solving the problem of restoring a broken plastic item is simple - to do this, you need to connect its broken parts and glue them together. But the use of glue does not always give the expected result. And all due to the fact that all adhesives for plastics are different. To answer the question of how to tightly glue plastic, you should study the features and properties of the most popular compositions and choose the best among them.
Types of glue for plastic
To make it easier to find high-quality glue, you should familiarize yourself with the popular representatives that are most often found in stores and on the market. Correctly selected adhesive will reliably stick to any surface and will last for a maximum period.
It is important to know that the plastic itself has poor adhesion because it has a smooth surface. This greatly affects the quality and reliability of gluing.
In industrial enterprises, special welding is often used, as it allows elements to be connected more reliably and for a long time.
The main principle of the glue is that the surface dissolves and, after a strong blow, is crushed into a monolithic structure. Therefore, any plastic is based on a special solvent, and the composition includes wild polystyrene to ensure viscosity.
Hot melt adhesive for plastic
Bonding with heated plastic rods is not strong. Hot melt adhesives are used to fill chips and voids on plastic surfaces. Due to poor adhesion, thermal bars are not suitable for parts subject to stress. Do not use rods to glue small parts or broken flat panels.
The advantage of this option is that the glue is easily applied to the surface. This option is ideal for small operations.
Contact adhesive for plastic
This type of plastic parts can be easily glued and the adhesion quality will be high. There are two types of contact adhesives: with and without hardener. Applying both types involves the same steps. Glue is applied to one or both parts to be joined. They wait some time for the composition to stabilize, usually 10-15 minutes, then the parts are pressed against each other.
This type of composition is equipped with toxic elements, so work must be carried out in compliance with safety precautions, good ventilation is created, and substances do not enter the skin.
Glue is applied to one or both parts to be joined.
Liquid glue for plastic
Liquid adhesives are the easiest to use and therefore the most popular. Water-based and thinner versions are available. Their operating principle is the natural evaporation of solvents or water, depending on the components used. After the process is completed, hardening occurs and a reliable seam is created.
As a result, they should not be used on sealed objects; evaporation may not occur in this case. Among them, PVA, known to many, stands out, suitable for porous surfaces, with which you can stick plastic films on furniture. Dichloroethane is also of this type, but its use is harmful to health, so it is more often used in industry.
Liquid adhesives are the easiest to use and therefore the most popular.
Reaction glue for plastic
Reactive adhesives are reliable and affordable. Some reactive adhesives require external drying of the parts to be glued, others require the presence of ultraviolet rays, and others require water. All produced reaction adhesives are divided into 2 groups: one-component and two-component. Adhesives include polyesters, epoxy resins and polyurethane.
Edible glue
Such products do not emit toxic substances, which allows them to be used for gluing household items. Edible glue is in great demand among buyers. It does not cause poisoning or allergies, which is important if there are small children at home.
Let's sum it up
If you decide to repair plastic elements in your vehicle, then you should purchase the best plastic adhesive possible. At the moment, you can buy quite a lot of different compositions on the market, so you should carefully familiarize yourself with the operating features of a particular model.
You may also be interested in: Subwoofer for a car: choosing the best subwoofer for a car
At the same time, you should not choose too cheap models, as well as products from little-known brands, since their quality often leaves much to be desired. It should be taken into account that most products are extremely ineffective, so it is better to overpay a little than to then run to the store for a new composition.
Next is a video about quick glue for plastic:
The best superglues for plastic
The most popular method for gluing broken parts or assembling miniature models is superglue. The name itself speaks of the extraordinary speed of gluing and high bonding strength. Among the huge variety of tubes, experts have identified several products.
Universal Moment Super Second
When quick fixation is needed, Henkel's Super Seconds are a big help. Since this model is universal, it can be used to fasten objects made of plastic, wood, ceramics, porcelain or rubber. It is also suitable for porous products with high absorbency properties. To do this, apply a thin layer of “Super Second Moment” to one of the surfaces of the part, after which you must immediately apply another part. Both parts must be tightened and held for a few seconds. Immediately after this, the fixed elements are ready for further use. It is best to work with gloves and a mask. Because if the product gets on the skin, it will instantly stick. Super Seconds should not be used on utensils that are used for eating or cooking.
One tube contains 3 grams of glue.
Average cost 55 rub.
Advantages:
- instant capture;
- suitable for any material;
- transparent seam;
- price.
Flaws:
- strong smell;
- the product remains in the tube;
- dries quickly.
Second super instant
This cyanoacrylate product is suitable for gluing parts made of any materials. It is designed to work with leather, plastic, porcelain, metal, rubber and cardboard. "Super Flash Second" is waterproof, suitable for both outdoor and indoor use. It will cope with its task in the temperature range from -30 to +50 degrees. And gluing takes only three seconds.
One tube contains 20 grams of the finished product, which is enough for a large amount of work. With a convenient lid, you can easily store leftover glue until your next need.
The average cost is 120 rubles.
Advantages:
- volume;
- dries in 3 seconds;
- Suitable for all materials.
Flaws:
- No.
Super glue "CONTACT"
An excellent two-component option, suitable for gluing products made of ABS, polypropylene, etc. Provides reliable fixation for several years. The seam is almost invisible and does not stand out over time.
Sold at a price of 230 rubles.
Advantages:
- perfectly glues synthetic elements;
- reliability;
- good composition;
- useful marker.
Flaws:
- high price.
BRAUBERG for plastics
An excellent universal product suitable for all types of work. Thanks to the high density of the adhesive, this reduces consumption. It has found application both in creativity and tasks, and in the creation of complex products in laboratories. A special cap allows you to reuse the product several times.
Average price 12 rubles.
Advantages:
- reliable adhesion to the surface;
- compound;
- reusable;
- waterproof.
Flaws:
- setting time: up to 60 seconds.
Henkel Super Moment Maxi
Instant bonding of plastic and plastic is highly appreciated by professionals. Not all adhesives are up to the task, but Henkel's Super Moment Maxi is up to the challenge. It not only fastens quickly, but also securely binds different materials. In addition to polymer parts, the composition can glue metal, cardboard, ceramics and porcelain.
The manufacturer has made soft and comfortable packaging and an elongated tube spout. This made it possible to carefully and economically apply the glue, without the master’s hands being in the solution. The cap is easily removed and, when closed, prevents air from entering the tube.
Average price: 292 rubles. (20 g)
Advantages:
- instant adhesion to the surface;
- economical consumption;
- adhesives and other materials;
- gluing quality.
Flaws:
- not found.
Superglue POWER
High-quality superglue STRENGTH is sold on the domestic market at an affordable price. At the same time, the composition firmly adheres to plastic, plastic, porcelain, glass, leather and wood. Thanks to the convenient tube, the required amount of glue can be applied precisely to the surface of the workpiece.
This has a positive effect on consumption. Experts note the absence of diffusion; the gel does not drip onto other objects or hands. The product is based on ethyl cyanoacrylate with the addition of thickeners. After drying, the adhesive seam becomes transparent, which is important when gluing white or colored materials. The adhesive strength during testing was 175 N.
Average price: 50 rub. (3 g)
Advantages:
- glues quickly;
- convenient to use;
- no pungent odor.
Flaws:
- not often enough.
Economy Express Universal
Universal Chinese superglue Econ Express has an instant effect. It is easy to use, quick to set up, and unpretentious in operation. The composition is suitable for gluing plastic and plastic, metal and paper, rubber and porcelain. Experts note the high strength of the adhesive seam, which can withstand a load of 210 N. The use of glue is quite standard, the surface of the parts is cleaned and degreased, applied to one of the parts, the compression time is 5. -60 seconds.
Users note the low price of the composition, good quality and reliable tailoring. Even under the influence of water, the glued parts do not peel off. Consumers also respond positively to the sealed lid, which prevents air from leaking through. Disadvantages include a strong odor, which can cause headaches when working in a small, unventilated room.
Average price: 33 rubles. (3 g)
Advantages:
- affordable price;
- reliability;
- sealed hood;
- waterproof.
Flaws:
- strong smell.
Permatex Super Glue
Superclue Permatex Super Glue with a gel-like consistency has high adhesive strength to plastic. During comparative tests, experts from the magazine “Behind the Wheel” recognized it as the winner. The destruction of the adhesive seam occurs under a load of 245 N, which significantly exceeds the performance of competitors. In addition, the practicality of using glue when it is necessary to glue thin parts is noted. The product is recommended for gluing hard-to-reach and vertical surfaces. High adhesion strength is observed on non-porous plastics.
Average price: 126 rub. (2 g)
Advantages:
- sets quickly;
- easy to use;
- transparent seam;
- economical consumption.
Flaws:
- No.
The best waterproof adhesives
Waterproof compounds are used to join parts that are exposed to moisture. For example, this glue is used to connect pipes made of PVC and other plastic materials in the bathroom or kitchen.
Moment Crystal
This clear adhesive is resistant to moisture, dilute acids and low temperatures. It can be used in construction and repair work, as well as in embroidery. It can be used for gluing metal parts, plastic products, as well as plexiglass, polystyrene, soft and hard PVC, and is also suitable for processing glass, rubber, cardboard and other materials.
When working with Moment Crystal, it is desirable that the room is ventilated and there are no children or animals nearby. This is necessary due to the unpleasant odor this product has. In addition, gloves and a respiratory mask must be used while working. Opened adhesive should be stored in a dry and warm place, away from fire and heating devices.
Because it can easily ignite. In addition, if the product was transported or stored in a cold place, you must wait until it “reaches” room temperature before starting work. When using Moment Crystal, make sure products are dry and clean.
After this, apply the product to both parts of the product and connect them together. After 15 minutes, squeeze them well. The glued product will be ready for use within a day.
Volume “Moment Crystal” 30 ml. Use at temperatures not lower than +18 degrees.
Average cost 90 rub.
Advantages:
- resistant to frost, moisture and diluted acids;
- works with any material;
- comfortable tube;
- price.
Flaws:
- dries quickly after opening.
UNU Allplast
The basis of this product is acrylic. UNU Allplas is suitable for working with plastics based on synthetic resins. This product can be used both at home and not at work. It is often used in construction and repair work, as well as in embroidery for attaching decorative elements. In addition to plastic, UNU Allplas can glue glass, ceramics, wood and other materials.
To glue two pieces together, apply a small amount of glue to one surface and immediately attach the other piece. The connection will be tight but flexible. If the product has a porous structure, first apply the first layer of the product and let it dry for a couple of minutes. After this, a second layer is applied to one of the parts and immediately connected to the other. Maximum adhesion strength will be achieved within 24 hours.
UNU Allplas volume is 33 ml.
Average cost 205 rub.
Advantages:
- resistant to water, acids, gasoline and oils;
- not afraid of high and low temperatures;
- Suitable for working with any type of plastic.
Flaws:
- No.
Moment Plastic
Contact adhesive is designed for gluing soft and hard PVC, polystyrene, plexiglass and some other types of polymers. Not suitable for use with polyethylene, teflon and polypropylene. The composition reliably connects plastic objects, maintaining its properties when exposed to moisture and low temperatures (it has heat resistance in the range of -40... + 70 degrees).
Not afraid of exposure to diluted acids and alkalis. Thanks to transparency, the joining of parts becomes almost invisible. Aging resistance guarantees a long service life of the repaired product. Please note that the adhesive is not intended for use with items in contact with food.
Moment Plastic is applied to both pre-cleaned and dried surfaces to be bonded (to improve adhesion, it is recommended to sand and degrease them). Parts with the applied composition must be kept at room temperature for about 5... 10 minutes. Subsequently, objects can be connected by using force. The final bond strength depends on the pressure applied. Press the pieces together for a few seconds. You need to join the polymers carefully, since you won’t be able to correct the seam later. Since the adhesive contains toxic components, contact with skin must be avoided.
Advantages:
- high-quality bonding of plastic;
- transparency;
- affordable price;
- easy filling of cracks and chips;
- quick drying;
- water resistance.
Flaws:
- when exposed to high temperatures, there is a deterioration in the strength of the connection;
- toxicity.
UNU Creative
UNU Creative is a two-component epoxy adhesive. Suitable for working with any materials, including plastic, glass, wood, rubber, concrete, etc. The adhesive joint will be completely transparent and also resistant to stress and exposure to water and ultraviolet rays. It will be an excellent assistant in embroidery. It can fill holes and grooves, so it can be used to hold parts with uneven surfaces.
Before work, the bonded surfaces must be cleaned and degreased. When working with metal, it will need to be sanded. After this, you should start mixing the glue. You can do this in the cup provided or use a glass bowl. Both components must be in equal quantities. Mix thoroughly, the better the components are mixed, the better the connection will be. Once the mixture is ready, it will need to be applied to objects and pressed against each other. This should be left for 30 minutes. After an hour, the product will be ready for use, but complete drying will take about 12 hours.
The package contains two 15 ml tubes.
Average cost 485 rub.
Advantages:
- stick securely;
- suitable for any material;
- resistant to water, frost, acids and alkalis;
- the ability to add additional materials to the glue (sawdust, wood flour) and expand the scope of its application.
Flaws:
- does not bind thermoplastics.
Fortress Instant results
The multifunctional composition is suitable for fastening not only polymer materials, but also products made of wood, porcelain, leather, rubber, paper or metal.
The 3ml tube has a convenient embossed cap that helps break through the protective membrane. Additional protective cardboard packaging with a transparent “window” is provided. The container contains complete information about the product and how to use it.
Construction adhesive is made on a cyanoacrylate base. On average, he catches in one minute. However, for best results, the surfaces to be bonded must be thoroughly dried.
The advantages of the composition of the Chinese manufacturer are transparency, stable results and resistance of the bonded surfaces to moisture. This is the opinion of consumers who purchased the product. However, the consistency here is quite liquid, which can make work difficult, and the pungent smell cannot be considered beneficial.
Advantages:
- glue several surfaces;
- dries in 60 seconds;
- not so expensive;
- convenient packaging;
- moisture resistant.
Flaws:
- strong smell;
- very liquid.
SinTex glue
Quick-drying all-purpose adhesive for home use. Adheres tightly to plastic and other materials. Available in spray bottles for convenient and economical application. Not afraid of water and extreme temperatures. Has a transparent color.
Advantages:
- glues different surfaces.
- dries quickly.
- convenient packaging.
- economical consumption.
Flaws:
- strong smell.
New SGU-450
Powerful spray adhesive for plastic, leather, glass, rubber, leather and fabric. After spraying, a thin layer is applied to the surface, after drying it remains unnoticed. It has a high level of moisture resistance, which allows it to be used in basements, kitchens, showers, and bathrooms.
Advantages:
- high-quality gluing;
- works with any material;
- comfortable tube;
- waterproof.
Flaws:
- strong smell.
STAYER BlackPRO WATERPROOF
One of the best waterproof representatives. The product is able to work with all materials, providing a reliable and durable connection. For more effective adhesion, it is important to apply the fluid at a temperature of +10 degrees.
The average price is 194 rubles.
Advantages:
- reliability;
- universal;
- popular manufacturer;
- per package 280 ml.
Flaws:
- not found.
Liqui Moly
This German manufacturer is one of the most popular manufacturers of vehicle consumables. The glue perfectly connects rough overlapping elements. The dispenser is very convenient to use, and the composition itself dries quickly.
The instructions precisely describe what precautions must be taken when working with the substance. The disadvantage is that it is not very durable.
The best frost-resistant adhesives for plastic
Sometimes it is necessary to glue at subzero temperatures, otherwise the product will be used in the cold. In such situations, you should use a special glue designed for low temperatures.
Epoxy adhesive for plastic PERMATEX Plastic Welder 84115 0.025 l
This is a two-component plastic adhesive that must be mixed before use. It is made in the UK, has a high price, but can be used at temperatures from -50 to +121 degrees, that is, even direct heating will not destroy it. In addition, this glue is resistant to water and chemicals. It sets in 5 minutes but takes about 24 hours to dry completely. Supplied in a 25 ml bottle. The composition expands, filling gaps up to 3.2 mm deep. This heat resistant adhesive is suitable for PVC, acrylic, vinyl, ceramics, plastic. Not recommended for polyethylene and polypropylene.
Advantages:
- withstands very low and high temperatures;
- sets quickly;
- not afraid of moisture;
- not afraid of chemical influences;
- he can fill in the gaps;
- Suitable for a wide range of materials.
Flaws:
- takes a long time to dry;
- expensive;
- requires preparation.
Loctite glue
The high cost of this glue is due to its ability to form great adhesion. The liquid structure of the sticky mass ensures deep penetration into the pore structure and small defects.
- Crystallization of the components occurs within 5 seconds after applying a thin layer.
- The advantage of this brand is its ability to withstand sudden temperature changes from -40 to 100;
Advantages:
- high-quality gluing;
- dries quickly;
- convenient packaging;
- frost-resistant.
Flaws:
- high price.
Hosch
The cost here is quite high, but the efficiency is decent. At the same time, this two-component plastic adhesive performs well on both smooth and rough surfaces.
To increase gluing parameters, flux powder should be used.
True, the tube is very small, and applying the composition on an inclined plane is very difficult, since the powder will simply crumble.
Cold welding
The peculiarity of this type of glue is that it includes two components and, after mixing, turns into a practically indestructible composition. The best option is to securely glue the plastic.
Aviora Monolith 403-218 45 g
This two-part epoxy adhesive is an excellent option for bonding a variety of materials, as well as for filling cracks or holes. It is not afraid of high temperatures, sets quickly and is very economical. The finished composition has good viscosity, so it is convenient to apply it to the gluing site or as plaster. After hardening, it turns into a durable material that is not afraid even of mechanical stress.
Advantages:
- cheap;
- good viscosity;
- easy to use;
- very durable after polymerization;
- not afraid of moisture;
- not afraid of high temperatures.
Flaws:
- missing.
Cold welding adhesive Poxipol 10 minutes transparent 00269 0.07l
Cold welding from Uruguay with two components that must be mixed before use. Among the advantages of the composition is resistance to water and chemical influences. Can be used at temperatures up to 120 degrees, sets in 10 minutes. It can bond plastic, glass, concrete, porcelain, stone and wood.
Advantages:
- fast adhesion;
- transparent;
- easily grasped even by perfectly flat objects;
- mixes easily;
- resistant to shock loads.
Flaws:
- sometimes there are fakes in which the composition turns out yellow;
- high price.
Features of such substances
Plastic is a fairly durable substance, but at the same time, such a material practically cannot be glued due to low adhesion and chemical reactivity.
In addition, there are no small pores on the surface. Thus, special compounds should be used to repair such elements.
There is another way to repair plastic - welding. At the same time, such a solution is only suitable for service in special workshops; this method will not be relevant in everyday life, so all that remains is to buy glue or completely replace the item.
The best heat-resistant adhesives for plastic
Heat-resistant plastic adhesive is required when exposed to high temperatures, this property is due to the composition of the material. There are three brands of plastic glue that can withstand high temperatures, although there are actually more.
Moment Gold Standard
This versatile adhesive from Henkel is suitable for indoor and outdoor use. It is resistant to water, chemicals, and can withstand low and high temperatures. This product is solvent based. Apply Moment Gold Standard to both surfaces of the parts, then wait and seal. Maximum strength will be achieved one day after work. After this, you can proceed to further processing of parts.
The average cost is 155 rubles.
Advantages:
- resistant to chemical attack;
- can be used in the temperature range from -40 to +110 degrees;
- not afraid of exposure to water.
Flaws:
- not suitable for working with polyethylene and polypropylene.
Second epoxy plasticine
This product is a quick-setting mass that can bond products even under water. “Second Plasticine Epoxy” is suitable for working with plastic, metal, glass and ceramics. After hardening, a durable seam is formed that can withstand operating temperatures from -50 to +130 degrees. It is also chemical resistant. Excess dried seam can be sanded off. In addition, “Second Epoxy Plasticine” is used to fill cracks and seal products. The product completely hardens in 5 minutes.
The average cost is 215 rubles.
Advantages:
- sets quickly;
- suitable for many materials;
- withstands low and high temperatures;
- Resistant to chemical attack.
Flaws:
- not suitable for working with polypropylene and polyethylene.
Moment 88 Extra strong
If you need a very strong connection that is not afraid of water, frost, high temperatures, and is also resistant to aging, then “Moment 88 Extra Strong” will be an excellent option to solve this problem. With its help, you can reliably connect parts made of plastic, metal, ceramics, wood and even concrete. It will take 24 hours to fully cure. To strengthen the bond, the manufacturer recommends cleaning them with sandpaper before work and then degreasing them. The product is applied to both surfaces of the parts, after which you need to wait about 10 minutes and then connect them. The strength of the connection will depend on the force applied during the connection.
The average cost is 150 rubles.
Advantages:
- suitable for use in the temperature range from -40 to +110 degrees;
- works with any material;
- waterproof.
Flaws:
- not suitable for working with polyethylene, polystyrene, polypropylene;
- not suitable for dishes in contact with food.
Mastix MS 0115
A quality product designed to provide a tight connection and sealing of products operating at temperatures up to 250 degrees. Production takes place on the territory of the Russian Federation. With the help of this glue, a person can easily fasten any plastic part. Sold in standard packaging, weight - 55 grams.
Average price 200 rub.
Advantages:
- good composition;
- strong adhesion;
- does not collapse over time;
- universal application.
Flaws:
- not found.
ABRO EC-520
Two-component adhesive is ideal for joining ceramic, wood, metal and plastic products. Polymerization occurs 4 minutes after application. The product is completely transparent and does not change color after prolonged use and exposure to sunlight.
Production is entrusted to a well-known brand that has proven itself in the construction, home and automotive sectors. This is one of the best products, which has no analogues on the market. The characteristics fully correspond to the description presented on the official website.
Average price 170 rub.
Advantages:
- unlimited validity period subject to operating conditions;
- popular brand;
- guarantees a long-lasting connection;
- polymerization speed - 4 minutes.
Flaws:
- not found.
PERMATEX 147 grams
Rugged, American-made model designed for professional use. Has high resistance to high temperatures. Resistant to solvents, kerosene, antifreeze.
The connection is tight and can withstand sudden temperature changes. The decal is designed for use in a car, but it can also be used at home.
Average price 510 rub.
PERMATEX 147 grams
Advantages:
- duration;
- reliability;
- does not dissolve under the influence of solvents;
- it does not crack due to sudden temperature changes.
Flaws:
- not found.
UHU Kraft, 6 gr.
Excellent adhesive based on polyurethane rubber. It has a high membership rate. Can work not only with plastic, but also with products made of metal, wood, felt, etc. Provides a strong connection even in places with high humidity. Withstands negative temperatures down to -30 degrees. Not sensitive to acids, alkalis, alcohol, UV rays.
Sold at a price of 102 rubles per 6 grams.
Advantages:
- popular brand;
- quality composition;
- reliable connection;
- good heat resistance.
Flaws:
- high price.
Composition and properties of silicone adhesives
Silicone adhesive has become popular due to its unique combination of qualities and properties that other types and types of adhesives do not have. It can be used simultaneously for bonding and sealing.
Basic properties and characteristics of the substance:
- Moderate thickness. The consistency of the glue allows it not to spread over the surface, while penetrating into hard-to-reach areas and areas. It easily fills cavities and irregularities in the materials being bonded.
- Wide range of applications. There are a wide variety of types and types of materials available for gluing: plastic, wood, glass, ceramics, metals, tiles, rubber and so on.
- Health safety. Silicone-based adhesive is natural and non-toxic, and complies with environmental and safety regulations.
- Simple and easy to use. The glue is easy to apply and does not flow; it does not require special skills or experience.
- Quite fast polymerization. Hardening of the adhesive joint occurs within 2-3 hours, operation can begin a day after application.
- Perfect result. The seam is transparent, waterproof, elastic, inert to temperatures and ultraviolet radiation. Additionally, the glue may have antiseptic and fungicidal properties.
- Reliability. Silicone adhesives have all the characteristics declared by the manufacturers. They are reliable, strong and durable.
Epoxy resin
If something needs to be glued together for years, epoxy resin is the best option. And regardless of the brand chosen, each of them shows excellent gluing results. The hardeners contained in epoxy resin are resistant to all types of influence, including acids. Many craftsmen also make jewelry from epoxy resin. They place a flower or any other object in a mold and fill it with resin. The resulting pendant can faithfully serve its owner for many years.
How to choose the right glue for plastic
When choosing an adhesive, you need to consider the type of plastic. To do this, each product is marked in the form of a triangle with arrows:
- PETE is the most common polyethylene, a thermoplastic used to make food containers and packaging materials. It is often used in the manufacture of electrical and radio engineering elements and cosmetic containers.
- PVC is plasticized polyvinyl chloride, a universal material used in the production of the vast majority of goods: furniture, building materials, various parts, food containers.
- LDPE is a thermoplastic material that is considered a good thermal insulator. These include tubes, packaging, toys.
- PP is strong, durable, the cheapest polypropylene and is considered the cheapest and most popular plastic. It is used in the manufacture of sewer pipes, automobile parts, and various tools. Excellent resistance to aggressive substances and extreme temperatures.
- Polystyrene PS is a thermoplastic polymer that is resistant to chemicals and moisture. One of the most common types of plastic, used for thermal insulation of furniture, dishes and linings.
- Other and other types of plastics to which various polymer elements are added. Not reusable. It is characterized by high strength.
The tube must be sealed, undamaged, and contain detailed information and instructions. To repair toys, you should purchase a solution based on BF glue.
When choosing an adhesive, you should take into account the material on which the plastic is glued.
When purchasing glue, it is important to consider the material on which the plastic is attached: paper, leather, metal, wood, etc. If the product is intended to be used outdoors or in places with high humidity (kitchen, bathroom, shower), moisture-resistant types are used. When working with contact adhesive, ensure ventilation and ventilation.
One-component and two-component adhesives for plastics have their own markings in the form of letter abbreviations. For example, PPMA (plexiglass), PP (polypropylene), PA 66 (polyamide), etc. For the average consumer, these designations do not have much meaning, since any adhesive for plastics has instructions indicating which types of plastics are suitable for gluing.
Determining the type of plastic
To firmly glue plastic, you need to know its type, type, name. With the general division of plastics into thermoplastics and thermosets, the industry produces hundreds of types of plastic, among which the most commonly used in everyday life are:
- vinyl, polyvinyl chloride;
- polycarbonate;
- polyethylene;
- polyamides (nylon, nylon);
- plexiglass (polyacrylate);
- polyurethane.
Most of these plastics belong to the group of thermoplastics. For gluing thermoplastic plastic, it is better to use multi-component adhesives with catalysts. Epoxy adhesive is better suited for gluing thermoset plastics (thermosets).
Plastic markings for choosing adhesive
Manufacturers of adhesives, in order to increase sales and make it easier to choose an adhesive, do not use the chemical names of plastics on their labels. Most often, on the inside of the plastic part, in the instructions for the glue, you can find such plastic markings in Latin letters.
| Type of plastic | Marking |
| Polypropylene | PP |
| Polycarbonate | PC |
| Polyethylene | P.E. |
| Polyvinyl chloride | PVC |
| Polyurethane | PUR |
| Acrylonitrile (automotive) | ABS |
| Polyamides | PA 66 |
| Polyacrylate | PMMA |
Labeling plastic is not very important for household work. Symbols acquire decisive importance in automobile repairs. The markings on the inside of the plastic bumper determine the auto repair technology - sticking patches or welding with plastic electrodes.
How to glue plastic tightly at home
Gluing plastic is not that difficult. Buy glue for plastic and follow our tips:
- Remove grease stains. Before you start gluing, degrease the work surfaces with a suitable detergent, alcohol or just soapy water. Dry or dry thoroughly. Do not touch the plastic with bare hands to avoid leaving oil stains.
- Sand the surface. For better adhesion of the glue, plastic surfaces must be slightly roughened. Sand the bonding area with sandpaper or sandpaper.
- Mix ingredients as needed. If you are using epoxy glue, you will need to mix the ingredients yourself in the correct proportions.
- Apply glue carefully. Apply glue to the plastic with a synthetic brush. For small details, use a toothpick or the tip of a needle. Try to apply the glue in a thin layer so that it does not spread when further squeezing.
Read the instructions carefully before starting work. Many types of plastic adhesives require the adhesive-coated surfaces to be pre-cured before pressing them, while others require them to be held at a specific temperature. The more carefully you follow the manufacturer's recommendations, the better the result will be.
- Press the pieces together. The reliability of the connection largely depends on the force with which the parts are pressed against each other. Try to do this with force, but not sharply, squeezing the parts strictly perpendicular to the surfaces being glued. Use clamps or rubber bands to hold the pieces until the glue is completely dry.
- Remove any remaining glue. Clean the glued parts from drops of glue using a special tool or any alcohol. Cyanoacrylate glue can be easily removed with acetone, but be careful not to damage the plastic.
Technology and rules for working with glue
The quality of working with silicone glue depends on the correctness and accuracy of its application. The surfaces to be bonded must be smooth, clean and dry; for better bonding, they are degreased with a special compound. The spout of a tube of glue is cut off shallowly with sharp scissors or a knife. To prevent excess adhesive from coming out when squeezing parts, you should use a special dispenser. When working on large areas, you may need a special gun. This is a convenient and practical tool for the builder.
Advice! To simplify the work with silicone glue, packaging is of great importance. A cylinder with an applicator allows you to control the amount of substance released and is convenient for storing unused residues. And the gun-shaped applicator is ideal for applying glue-sealant.
Silicone-based adhesives harden within a few hours, so most often parts require strong fixation for about a day. Excess glue is removed using a sponge or rubber spatula. When working on decorative surfaces, the glue is carefully selected according to color. And to protect the outer coating, you can use masking tape, which is removed after the adhesive has completely hardened.
How to achieve maximum effect when gluing plastic parts
To achieve the best result, you should study the recommendations of specialists. They highlight the following points:
- The need to correctly determine the type of plastic;
- Strict adherence to manufacturer's instructions;
- it is necessary to maintain the specified time until the gluing process is completed;
- If there are no marks, you can apply glue to an inconspicuous area and see the reaction of the material.
it is necessary to maintain the specified time until the gluing process is completed.
What affects the reliability of gluing
Not many people know that adhesion strength depends on many factors. To avoid mistakes, you need to follow some rules. There are several conditions for successful gluing:
- Selection of adhesive suitable for a specific plastic;
- The compression and hardening times must be observed;
- Prepare the surface, remove dirt, degrease and smooth. The parts must be immediately pressed into the correct position.
To avoid mistakes, you need to follow some rules.
