What is rubber-based glue used for - which one to choose?

Peculiarities

Most often, rubber adhesive is used to join elastic parts. The fact is that after hardening, the structure is really similar to rubber. However, when purchasing such glue, you need to try to ensure that its composition is similar to the parts being joined.

The composition of rubber glue can include not only natural rubber, but also synthetic rubber. Ethyl acetate, chlorine-containing or organic compounds can be used as a solvent. The recipes of all manufacturers are different, so the properties of glue from different brands may differ.

The main feature of rubber-based glue is that it can be used with paper, textile, glass, wood, metal and other materials. It is widely used in the footwear, furniture and automobile industries. However, this glue can also be purchased for household purposes.

Process

In order for the work to be done efficiently, the consistency of the adhesive must be suitable. If it is too thick (hardened by incorrect storage methods or if it is expired), then the work will most likely need to be redone.

However, if the glue is completely unusable when it is expired, then in a situation where it has become too thick, it can be diluted and used.

For such purposes, nefras or benzene are usually used, which are mixed with the material until a homogeneous mass is formed.

Types of rubber glue

Rubber glue is classified according to two criteria: the amount of dry residue and the composition of the rubber. At the moment, in accordance with GOST 2179-78 and TU, the amount of dry residue varies between 6-8% and 8-12%. Rubber glue, which contains 6-8% dry residue, is produced under brand A, respectively, quantitatively showing from 8-12% is typical for rubber glue under brand B.

If rubber glue complies with GOST, this guarantees quality and safety. Therefore, before purchasing, you should familiarize yourself with its quality certificate.

Liquid rubber has a broader classification based on the composition of the rubber it contains. Natural rubber adhesives are not suitable for use in some industrial applications, which is why special compounds based on synthetic material have been developed. The fact is that glue made from natural rubber has low resistance to exposure to aggressive environments and high temperatures.

The most common types of rubber glue include the following.

1. Adhesive based on natural rubber. The vulcanizing agent in its composition is sulfur. Rubber glue is suitable for joining elements made of paper, leather and fabric.
2. Chloroprene rubber adhesive. For vulcanization, divalent metal oxides are added to its composition. It has the most reliable joining abilities, so it is used for gluing parts made of metal, wood, glass and plastic.
3. Adhesive containing nitrile butadiene rubber. Sulfur also acts as a vulcanizing agent, but only with the addition of a group of thiurams. This adhesive is water-resistant and is used for materials such as metal, wood, glass and ceramics.
4. Adhesive based on silicone rubber. The hardening of such a compound is carried out only under the influence of tetrabutoxylane. Its range of action is limited: it is intended only for joining homogeneous rubber.
5. Styrene butadiene rubber adhesive. Due to its weak adhesive ability, it is used only for industrial purposes, in particular for the manufacture of adhesive tape.

Other synthetic rubbers can also act as the basis for rubber glue, but their use is very limited. Therefore, they are not released to retail stores.

Properties and characteristics

The main difference between rubber glue is the formation of an elastic seam that maintains the plasticity of the structure. In its solid state, the adhesive is made from natural or synthetic rubber and has properties similar to rubber.

The recipe used by manufacturers is unique, and the composition depends on the operational and technical characteristics of the finished product:

Waterproof adhesive for rubber, periodically in contact with water - repair of shoes, boats, leather goods. High-strength rubber adhesive, resistant to aggressive operating conditions, is used in construction and car repair. The quick-drying composition reduces the curing process of adhesive joints. It is not recommended for large-scale work, since there is no time for adjustments. Elastic rubber adhesive is used for gluing soft materials. After drying, the structure of the seam remains plastic, does not “tan”, and therefore does not crack during operation. The oil-resistant composition is used when working with petrol- and oil-resistant materials.

An important property of adhesives BR-10, KR-5-18 is that they do not dissolve in the aggressive environment of fuels and lubricants and petroleum products.

Some manufacturers produce universal rubber adhesive that combines several properties, for example, water resistance, elasticity and oil resistance. Before purchasing a product, you need to study its technical characteristics and make sure that the composition is suitable for solving a specific task and can withstand further operating conditions.

Brands and costs of rubber glue

In order to systematize the information and make it more accessible to ordinary users, all data on popular brands of glue, their application and cost are placed in the table.

Read also: Calculation of a bush-pin coupling

The table below shows the approximate cost of the product. Prices for similar products may differ depending on the trade markup that is charged by the seller.

Famous brands and reviews

Based on ratings and consumer reviews, you can make an approximate list of top brands of compositions for rubber gluing:

• Moment rubber adhesive is a representative of the group of contact adhesives that is the most famous brand among buyers. The waterproof type of glue is characterized by high adhesion and elasticity of the seam. A few minutes after compression of the surfaces to be joined, the product is ready for further machining. The operating temperature range of the resulting seam is -40°С–+110°С.

"Moment" is the winner of the consumer demand rating

• Series 88 adhesive is a universal waterproof composition that connects rubber even to concrete and metals. They are widely used for industrial purposes, therefore they are produced in bulk packaging.

Professional rubber types for gluing

• Grade 4508 is elastic, moisture-resistant, with high stickiness and penetrating ability. It is used for the production of rubberized materials, protective suits, for gluing leather goods, shoes, boats and other rubber products.
• Glue "Mark A" based on natural rubber is a universal tool for decorative and small construction (even as a sealant) work. It is used without degreasing and dries quickly.
• Loctite, “Radical”, “Gummi” - waterproof, elastic, fast-acting compounds. A real lifesaver for fishermen, boaters and motorists.

Boat after repair: let's go fishing again

How to choose rubber glue?

To choose the right rubber adhesive, you need to clearly understand where it will be used. Before purchasing, you need to answer a number of questions that will allow you to identify the exact requirements for its properties and characteristics.

1. Will the product be subject to heating or cooling? Different compounds can withstand different temperature ranges. Therefore, if you plan to use rubber glue in aggressive conditions, you should make sure that it is intended for these purposes.
2. Will the product be subject to deformation, shock or vibration? Almost any rubber adhesive has high resistance to mechanical stress. But there are special varieties that have increased tensile strength.
3. What size seam should be placed on the product? For thin joints, thinner compounds are chosen, for thick ones, thicker ones.
4. What materials need to be glued? In order to choose the right glue, you need to carefully familiarize yourself with the area of ​​its application.
5. Will the glue come into contact with food? Many types of glue are extremely toxic. Therefore, for gluing dishes it is necessary to choose special safe compounds.

All properties of the glue can be found in its instructions for use. You can also ask for help from the seller, who can advise on the available range. The main thing is to correctly and fully provide him with all the necessary requirements for the product.

What does the product consist of?

Rubber is an excellent elastomer. Previously, it was obtained from dandelion milk or hevea juice. This substance is now being synthesized.

Due to its elasticity and water resistance, rubber serves as an excellent base for glue.

At first, chlorine was used as a solvent, with which the bonded surfaces served for a long time. It had to be abandoned because the smell was very pungent and the composition was highly toxic.

You can purchase the product in the form of a two-component vulcanizing composition. It hardens due to the evaporation of water or vulcanization.

To glue objects with a porous surface, you will have to use wet gluing, removing the solvent. In this case, the items will be very resistant to moisture and microorganisms. At the same time, resistance to solvent and oil does not pass.

Rubber adhesive consists of rubber (click to enlarge)

Brands and costs of rubber glue

Several types of adhesive composition are known. To make the seam strong and sufficiently elastic, you need to choose the right fastening agent.

1. Rubber glue 88n made in Russia. Its cost ranges from 200 to 400 rubles per kilogram. It glues rubber products, as well as any other materials, with high quality and for a long time. Sometimes it is diluted with benzene until a homogeneous consistency is obtained, reminiscent of thin sour cream. Lubricate the rubber part with the mixture, allow it to dry for 3-5 minutes, then apply glue again to both surfaces to be joined. After 5-6 minutes, the parts are firmly connected and dried under pressure.
2. Rubber adhesive brand " A " is made from natural rubber. It is used for sewing clothes, leather goods, shoes, and for fastening rubber and woven materials. Creates a high-quality and durable connection and is very convenient to use. Rubber glue grade A costs up to 50 rubles per 50 ml package.
3. “ Glue 4508 rubber ” is excellent for fastening rubber technical products and textiles. The cost of such a composition is within 100 rubles per 100 ml. When glue gets on paper, the rubberized fabric parts become sticky. Therefore, the adhesive composition is used to restore inner tubes, rubber boats, and waders. When treated with glue 4508, a plastic seam is obtained, which is durable, waterproof and resistant to environmental influences. When using it, you must strictly follow the recommendations on the packaging. The surfaces of the parts to be glued must be thoroughly prepared. Rubber often contains dust, particles of various substances and oil. They will have to be removed using special means.
4. Rubber glue " GOST 2199-78 ". Used for gluing parts made of cardboard, leather, fabric and rubber. This rubber adhesive forms an elastic bond, leaves almost no traces, and does not require the removal of fat from surfaces. The adhesive mass is applied in an even layer to the parts. After 15 minutes, make a second layer of glue, wait for 2 minutes and firmly press the parts of the product together. The final drying of the glue is achieved within a day. Produced in packages of 1, 2, 50 and 200 kg. Often used on an industrial scale. In terms of quality and reliability, this rubber glue is significantly superior to popular superglues. It is easy to use, easy to transport and allows you to quickly and efficiently carry out repair work.
5. Liquid rubber Plasti Dip . This is a rubber-based paint. It is an indispensable product for covering, protecting and improving the appearance of a car. The composition is applied to the body. Coating with liquid rubber gives the surface excellent shockproof and anti-slip properties, is resistant to moisture penetration, ultraviolet radiation, temperature changes, and has significant elasticity.
6. Rubber cement . It is characterized by the fact that it does not glue leather parts tightly. Even after time, the glued surfaces can be separated. Used by shoemakers to fasten the outer part of shoes and the lining. The glue has a sticky, viscous consistency; the thickness varies. Apply to the surfaces of both parts and leave for some time to absorb. Then the parts are pressed against each other. Glue is very convenient for processing large surfaces.

Read also: Fuse dimensions on the diagram according to GOST

Features of rubber-based adhesive

Professionals have noted many advantages of rubber adhesive based on natural rubber. The main ones are:

• wide range of applications and versatility, as the adhesive is suitable for various materials;
• the adhesive seam has high elasticity;
• the glue remains in a sticky state for a long time, retaining its fastening properties, therefore it is suitable for gluing large parts;
• non-toxic, under the influence of the external environment and high temperature does not emit elements harmful to health;
• Manufacturers market glue that is ready for use.

Rubber adhesive has been successfully used to fasten wooden structures. Under the influence of moisture in the air, it hardens faster. During drying, the glue particles swell, filling the adhesive seam and providing reliable adhesion of porous materials.

A small amount of glue is applied to the wooden base. The parts are connected and left alone for 4 hours.

Advice: Work with rubber glue in a room with good ventilation. Do not carry out work near open fire.

What types are there

Rubber adhesives according to GOST are divided depending on the percentage of dry residue:

• grade A corresponds to a dry residue of 8-12%;
• brand B – dry residue 6-8%.

Products are also divided according to their rubber composition. Natural rubber cannot be used in some industries due to its poor environmental tolerance. Therefore, synthetic elastomers were invented that glue metal, wood, glass, ceramic, and plastic structures. The stability of the adhesive seam is very high. It will withstand temperatures that are too low or too high, exposure to acids and alkalis, and will not age when exposed to sunlight.

From the video you will learn even more:

• natural rubber adhesive. For vulcanization to occur, sulfur is added to it. This composition is suitable for high-quality restoration of old rubber, leather, fabric, cardboard and paper products;
• product with chloroprene rubbers. Here, divalent metal oxides act as vulcanizing agents. With this composition, gluing occurs quickly;
• product based on synthetic nitrile butadiene rubber. Vulcanization is influenced by the thiuram group;
• adhesive composition with silicone rubber. They can be used to glue products made of homogeneous rubber;
• The weakest adhesion is exhibited by glue based on styrene-butadiene rubber. Therefore, it is used in the manufacture of adhesive tape.

Instructions for use

Gluing rubber parts must be done correctly so that the resulting connection lasts a long time and has a neat appearance. It is necessary to follow the technology indicated on the packaging.

There are two types of gluing:

The first method involves doing the job with rubber cement at room temperature. However, the drying time of the adhesive joint ranges from several hours to several days.

When gluing using the second method, the parts are bonded at a temperature of 70-160 degrees. And the duration of the process is reduced to several minutes.

Thorough preparation of the surfaces to be joined guarantees their reliable bonding. It should be borne in mind that before degreasing the rubber, it must be treated with an abrasive material (preferably fine sandpaper) to increase the contact area. Remaining dust should be removed using a special cleaner.

Cold

The method is very similar to the gluing method with conventional glue. The work must be performed at room temperature.

After application, you need to let the glue dry for about twenty minutes, then the procedure is repeated and after that the elements can be glued.

Then the product is left to dry for about 2 - 3 days.

How to choose an adhesive composition

You need to select rubber glue based on the following conditions:

• thickness and size of rubber, its susceptibility to abrasion;
• plasticity or rigidity of the bonded material;
• humidity and temperature conditions;
• external qualities of the finished product;
• chemical composition of glue.

When the requirements and wishes for the resulting adhesive joint are met, the work will be completed efficiently.

Rubber glue is a universal means of repairing various products. With it, you can easily restore the integrity of damaged items at home, and they will last for a long time.

Principles of working with rubber material

No matter what type of work is involved, you need to start with the selection of really high-quality rubber glue.
You need to pay attention to the elasticity of the rubber material; the higher it is, the more suitable it is for working with flexible structures. You also need to take into account the conditions under which it will be used (humidity, loads, etc.), its structure, as well as the temperature in which it will be located.

So, it is important that the selected adhesive does not harm the material with which it will be connected and does not show any chemical aggression.