Adhesive selection
Outdoor silicone items require outdoor glue. For the repair of parts in a vehicle, a special vehicle composition is used. If it is subsequently necessary to use silicone at high temperatures, then a high temperature adhesive is needed.
The most popular means for gluing the polymer is the composition of the manufacturer Klebfix, which is designed to join metals, plastics, rubber and other materials in various combinations.
A quality product - Permabond cyanoacrylate composition. It can glue non-uniform materials, suitable for bending materials. The adhesive can be used by first applying the same brand of primer.
How can silicone be glued:
- ELASTOSIL E43 sealant of the German company. The product does not require the use of a substance for adhesion, it is used for joining and sealing glass, plastics, ceramics, wood, silicone rubber, metals and other surfaces. Possesses self-leveling properties.
- Glue made in Germany REMA – VALMEXIN sc 38 also deserves attention. Products with the use of such a composition are not afraid of water. In addition to adhesive properties, it restores products made of silicone, PVC, rubber and latex.
- The glue of the German manufacturer Weiss COSMOFEN CA 12 connects silicone, ceramics, rubber, plastic and other materials. It is resistant to UV radiation, temperature fluctuations, dries quickly. The set includes a convenient dispenser. This option is characterized by high strength. It is recommended to pre-treat the products with Cosmoplast 588 primer for better adhesion.
If you use any of these options, then there will be no more questions about how to glue the silicone.
How to choose the right composition?
Once in a building materials store, you can really get confused when choosing the right composition.
To avoid a rash decision and a senseless waste of money, you should pay attention to the following points
- Production date. Expired sealants are often on sale. Whatever the quality of the selected composition, after the expiration date it will lose its beneficial properties.
- Manufacturer. Preference should be given to already established manufacturers. Compositions that contain cheap and low-quality dyes and fragrances can reduce the reliability of the seam.
- Packaging. Sealants are produced in small tubes, which can be damaged due to violation of transportation rules. The packaging of high-quality sealant must be complete and free from defects.
- Purpose of use. The purpose and purpose of the silicone glue should be the same. Otherwise, no one can guarantee the reliability of the connection.
- Place of purchase. It is best to buy a sealant in trusted hardware stores, where all the necessary documentation for the goods sold is available.
Based on these parameters, you can easily acquire a good silicone composition. The price for it is quite small, so you should not try to save money at the expense of the quality of the connector.
Silicone glue is a composition that allows you to solve many problems associated with construction and repair. Thanks to its unique properties, you can not worry about the reliability of the seams of the parts to be joined for a long time. The main thing is not to rush to make a choice.
Features of silicone glue
Silicone adhesives differ from each other primarily in composition. In addition to the main components, manufacturers add various catalysts, hardeners, fillers, and rubber to them. These adhesives differ from the rest in that the base component in them is silicone.
Back in those distant years, when enterprises were just beginning to establish the production of silicone, it had already been widely used in various fields. The base component provided the silicone glue with a lot of useful properties, making it a multi-tasking, versatile and reliable material to use. It allows you to glue objects from any materials. It is also successfully used for sealing joints. In the assortment of many manufacturers there is a special type of silicone glue called a sealant, although this is the same compound in its composition and function.
Composition of the sealant
To better understand what is the reason for the popularity of this glue, you need to get acquainted with the composition of silicone. The following elements can be distinguished in it:
- Silicone rubber. Acts as the base component of the sealant.
- Amplifier. Makes the composition durable after drying. The level of viscosity of the adhesive depends on the quality of the amplifiers.
- Adhesion primer. Its task is to provide adhesion to the application surface.
- Plasticizer. Has a silicone base. Manufacturers add it to the sealant to increase the elasticity of the material.
- Vulcanizer. The presence of this component in the composition of the sealant is associated with the ability of the latter to harden. Thanks to this component, the pasty composition after application turns into a plastic rubber substance.
Sometimes manufacturers add additional components to the building sealant, which significantly expand the scope of its application. Most often used:
- Dyes. Gives the sealant a black, white or other color. This additive is added to the composition at the manufacturing stage. Subsequently, it allows you to use it to mask seams, cracks on surfaces of any color.
- Mechanical fillers. The most commonly used sand and glass or silica dust. They are added to improve adhesion between silicone and surface.
- Fungicides. Their main task is to destroy and prevent the appearance of fungi and mold. The presence of such components in the composition is required if the sealant is planned to be used in rooms with high humidity.
Material properties
The inherent properties of silicone make it possible to understand for what tasks and under what conditions a sealant can be used.
- Filling cracks and seams, creating movable joints. Since the material is elastic, it retains its integrity even after drying.
- The components contained in the sealant allow it to be used in the range from -50 to + 200 degrees Celsius. Some manufacturers produce special heat-resistant compounds that can withstand heating up to + 300 degrees.
- Not affected by external factors, including aggressive ones. This allows it to be used in any conditions.
- After hardening, the sealant turns into a very moisture resistant substance.
- Silicone adhesive has excellent adhesion to most known materials.
- Mold and mildew does not appear on silicone surfaces.
With all its positive properties, silicone sealant also has a number of disadvantages, which must also be taken into account:
- Difficulty handling wet areas. Since the glue has a pasty consistency, it can roll over such a surface without having time to fix on it.
- Some types of sealants cannot be painted over.
- Does not always provide the required level of sealing of surfaces made of polyethylene, polycarbonate and fluoroplastic.
To avoid the manifestation of these disadvantages, it is necessary to use professional construction silicones, which are deprived of them. They contain special organic components and mechanical fillers. But such compositions are an order of magnitude more expensive than conventional ones.
Assigning material
Very often, a silicone compound is used to repair an aquarium.In this case, you will need a special model that will not only hold back moisture, but can also be under its influence for a long time without any visible violations of its strength. Also, the composition should not contain elements harmful to living organisms, so that the inhabitants of the aquarium feel normal. Before buying, you should check with the seller about the possibility of using the selected model for this operation.
Silicone based hot or high temperature glue is used in the industrial production of various products. Relatively recently, special kits for home use have also appeared. They are intended for creative people who like to create various masterpieces from improvised means.
The solid silicone rod is inserted into a special tool, similar to a drill. In it, it warms up to 200 degrees Celsius and turns into a liquid state. After that, you can glue any small parts with it. The tool allows you to control the flow rate down to a drop, so do not be afraid that the glue will flood the entire craft. Silicone hardens quickly, so you will have to act quickly.
What glue to choose to glue soft silicone
For gluing soft silicone products, experts recommend using the following adhesives (you can buy them in specialized stores):
1.VALMEXIN sc 38 is a glue of the German company REMA, designed for gluing, as well as restoring products not only made of silicone, but also latex, PVC, rubber. The adhesive retains its properties even when the silicone part is used in water, it is economical in consumption and ease of use.
It is enough to apply a small amount of glue to the desired area, press and hold for 1-3 minutes. After half an hour, the product can be used.
2. COSMOFEN CA 12 - recommended for use together with COSMOPLAST 588 * primer. The glue is produced by the German manufacturer Weiss, designed to work with silicone, metal, rubber, ceramics, plastic and other materials.
It has high strength, is resistant to temperature effects and UV radiation, dries within 5-20 seconds. It is very convenient to use it thanks to the dispenser that comes with the tube - you just need to apply a small amount of glue to a dry, clean surface, connect the parts tightly and hold for a few seconds.
3. Permabond 2050 is a cyanoacrylate adhesive, recommended for use with Permabond Polyolefin Primer. It hardens instantly, is easy to apply, is suitable for flexible joints, and the resulting seam is distinguished by excellent shock and vibration resistance.
Before using the adhesive, it is necessary to clean and degrease the surface, then apply a few drops and connect the parts. The mixture will harden in a few seconds.
How to glue damaged silicone fish baits
The loss and damage of jig lures for many fishermen becomes a serious expense item, but you can save a little by gluing old lures damaged or bitten by fish together.
This will require:
- Two pieces of damaged bait,
- Scissors,
- Candle.
VIDEO INSTRUCTION
Operating procedure:
- We prepare the bait - from one we cut off the tail to the damaged area, from the second - the body.
- We light a candle and heat the workpieces in the place where they will be joined. We hold in this position until the silicone begins to melt.
- We connect the parts - the tail and the body, twisting them a little in different directions, and leave to cool for a few minutes.
- Cut the seam at the joint with scissors and heat it again with a candle so that the silicone spreads a little and hides the traces from the joint of the parts.
The whole procedure will take no more than 15 minutes, and new baits will serve you more than once.
The best waterproof adhesives for plastic
Waterproof compounds are used for gluing surfaces that are constantly exposed to moisture. The funds are often used to repair PVC connecting pipes, kitchens, bathrooms. They adhere firmly, dry quickly, and allow the surface to be used for its intended purpose in a few hours. In the composition of such funds there are some harmful substances, therefore they are not recommended to be used for repairing products with which human skin comes into daily contact.
Only 3 waterproof adhesives are selected for the rating. They passed a full selection, in which 7 items were evaluated. The selected list of products is characterized by high strength, quickly adheres to the surface, does not cause allergies when in contact with it.
Contact
Chinese waterproof glue is made on the basis of synthetic thermoplastic elastomers, which are designed for bonding plastic, as well as for repairing shoes, leather and rubber. It is produced in a minimum volume of 30 ml, is consumed economically, does not have a pungent odor. The product is durable, elastic, dries quickly. Full curing requires 24 hours, after this time the material can be used for its intended purpose, without fear for its integrity and safety. After drying, it acquires a plastic, transparent appearance, does not worsen the external condition of the material being repaired. Contact adhesive for plastic contains harmful components, therefore, during its use, it is advisable to wear a mask on the face in order to avoid direct contact of the nasal mucosa and its substances.
Advantages:
- Reliable fixation;
- Copes with its functions;
- Affordable price;
- Economical consumption;
- Perfectly glues any plastic.
Disadvantages:
Chemical composition and smell.
As customer reviews show, the product is used for thoroughly gluing any kind of plastic, it comes into activity in a few minutes. A more lasting result is observed within a day. It is recommended to work with gloves and a mask to avoid negative effects on the skin and nasal mucosa.
The best adhesives for wood
Moment 88
The water-resistant composition is used for bonding rubber, metals, glass, ceramics, polystyrene. It will be ineffective in the reconstruction of dishes, styrene, polypropylene. The unique plastic glue formula is able to firmly glue the material, ensuring its durability, practicality and safety in use. It is characterized by particularly durable properties, due to which it is used in many industries, as well as in household work. It has a moderately pronounced odor, which disappears in just a few minutes upon the first contact with the surface. After a day, it is completely neutralized without creating any discomfort.
Advantages:
- Perfect bonding;
- Dries quickly;
- Used for many surfaces;
- Easy to apply;
- Good tenacity.
Disadvantages:
Gives off a strong odor.
Most reviews indicate that the moisture resistant glue does its job, safe when used correctly. Some consumers recommend interacting with it in the fresh air, since in an enclosed space it can create a pronounced unpleasant odor and provoke dizziness.
Second
A multi-purpose adhesive is used to bond any surface made of plastic material. It has a handy thin dispenser that helps to apply a minimal amount of product to the surface. The product is resistant to water and high humidity, it is also used for outdoor use, does not decompose under the influence of snow and rain. If you have no idea what kind of glue to glue the plastic, "Secunda" will be an excellent option. It is colorless, does not have a pronounced odor, you can interact with it even indoors. A 30 ml tube is enough for multiple uses. In addition to plastic, it perfectly adheres to rubber, leather, and is used to repair shoes.
Advantages:
- Low price;
- Suitable for many materials;
- Does not have a pungent odor;
- Convenient to use;
- Transparent view.
Disadvantages:
Dries up if not used.
Epoxy glue for plastic is applicable for frequent use; when opened, it cannot maintain a liquid state for a long time. When using it, there is no pungent odor, it does not cause allergies, it is considered one of the most practical and affordable gluing agents.
Work rules
To obtain strong and durable silicone-based joints, the manufacturer's instructions for correct and accurate application must be followed. The treated surfaces must be prepared - dried, cleaned from dirt, degreased with a special compound, sanded to eliminate irregularities. After that, a tube of glue is opened - with a knife or sharp scissors, the nose is cut off to a shallow depth.
It is very important to prevent excess adhesive from escaping when the parts are squeezed. To do this, you must use a special dispenser.
For large surfaces, it is recommended to use a special gun. It is in the arsenal of every professional builder, making it more convenient to work with silicone adhesives.
The hardening of such compounds occurs within a few hours. After that, the parts must be firmly fixed for a day. If excess glue appears, remove it with a sponge or rubber spatula. For application on decorative surfaces, it is necessary to use glue of the appropriate color.
In order not to stain the outer coating, it is recommended to fix the masking tape before applying the glue, which is removed after the adhesive mass has hardened.
In the construction industry, as well as in everyday life, it is often necessary to perform work where the creation of strong connections is required. In such a case, a home craftsman should have a special adhesive on hand. A silicone-based adhesive has proven itself well. Thanks to the components contained in its composition, it provides a reliable and durable fixation of surfaces, increasing their service life.
Professional builders use them also because of their versatility. With their help, you can connect not only silicone products, but also structures made of ceramics, metal, plastic, wood and other materials. Although it must be remembered that silicone compounds have different characteristics that determine their purpose. This must be taken into account when choosing them to fulfill the tasks at hand.
Particular attention must be paid to adhering to the manufacturer's instructions for the silicone adhesive treatment of the surfaces to be joined. They can be applied only on properly prepared surfaces, otherwise it will be impossible to guarantee the reliability and durability of the connection.
It is advisable to familiarize yourself with its description and find out what materials it is intended for joining and for what work it can be used before buying silicone glue Moment or any other. This primarily applies to those who do not know how to glue silicone products and other materials. This will avoid many difficulties and disappointment, when after a while it turns out that the connection created with such glue has lost its integrity.
Adhesive selection
Typically, glue is used to bond silicone parts. Moreover, the following situations may arise:
- with full confidence that the work is being done with silicone, you can use instant glue. Choose the product that contains cyanoacrylate. He is able to glue almost anything. You can also purchase "Contact" or aquarium glue;
- if it is not clear whether it is safe to say that the product or part is made of silicone, then it is recommended to use linoleum glue. Doubts may turn out to be quite justified - the material is often PVC (polyvinyl chloride).
Watch the video to find out more:
Popular brands
When choosing an adhesive, it will not be superfluous to study products from top manufacturers. Among the popular brands, there are options with an affordable price and optimal characteristics for working with silicone products.
VALMEXINsc38
VALMEXINSC38 glue from the German company Rema is designed for express repair and restoration of silicone products, regardless of their size and condition. The solution is economically consumed and easy to use. VALMEXINsc38 is formulated with three solvents.
COSMOFEN CA 12
Composition Cosmofen CA 12 is a liquid one-component adhesive with a transparent structure and a low viscosity. The created glue line acquires resistance to atmospheric precipitation and temperature extremes.
Due to the possibility of gluing many types of surfaces, Cosmofen CA 12 is considered universal. The adhesive is suitable for working with small parts of silicone products and when fast fixing of surfaces is required. It is not recommended to use this brand only when working with porous surfaces and products that have been in contact with water for a long time.
ELASTOSIL E43
Elastofil E43 adhesive is a one-component, self-leveling rubber that cures at room temperature and has high mechanical properties. The substance is used for working with silicone products and for adhering silicone to surfaces of other materials. The features of the Elastofil brand product include:
- acetate curing method;
- adhesion without the use of primers;
- self-leveling after application.
The universal solution provides airtightness and electrical insulation, undergoes extreme temperatures and vibration loads, and does not lose its original characteristics over time. Thanks to the packaging with the tip, the solution is convenient for spot application.
Popular brands of glue
How to glue silicone, what brands are sold in stores? One of the most popular is Klebfix, which can be used to glue any plastics, silicone, rubber, neoprene, aluminum and steel. The chemical base is ethyl cyanoacrylate, its tensile strength is very high. If the surface was clean, then it is almost impossible to break the gluing site. With the help of the tool, it is easy to repair hoses, rubber bands, pipes, car gaskets, phone cases and other products.
Also, for products made of soft silicone, it is allowed to use the following means:
- Valmexinsc38. Produced in Germany, intended for bonding and repairing products made of silicone, latex, rubber, PVC. After polymerization, the glue seam does not collapse from the action of water, it hardens in 3 minutes. This material is very economical in terms of consumption and price.
- Cosmofen CA 12. Universal agent for silicone and other materials, also produced in Germany. The strength of the joint will be high, especially if you first apply the primer of the same name. There is a special dispenser on the tube, so operation is easy and convenient.
- Permabond 2050. An instant cyanoacrylate adhesive, ideal for flexible joints. The seam will be strong and vibration-resistant.
Adhesive for plastic, which company is better to choose
There are many manufacturers that produce adhesive products, but not all of them have good quality indicators. The best adhesives for plastic are produced by the following manufacturers:
- UHU is a German company founded in 1884 by chemist August Fischer in Bul. In 1932, the first transparent synthetic adhesive was created, capable of gluing all types of plastic. The company monitors the emergence of new technologies, uses them, improving the quality of the goods.
- Cosmofen is a German firm of adhesives, its product is used for joining stretch ceilings, plastic windows, rubber boats. The purpose of the product is wide; it is supplied to various European countries and throughout Russia.
- Moment is a trade mark under which polyurethane foam, sealants and other gluing products are produced. The first product was released in 1979 at the Tosno Household Chemicals Plant in the Leningrad Region.
- Bison is a company founded in 1938 in Holland. Its adhesives have fast properties, interact with any plastic surfaces. The manufacturer exports goods to many countries in Europe and the CIS.
- Contact - the manufacturer uses modern technology to create an adhesive created for plastic, shoes, car parts, windows, doors and other materials. Convenient cap allows you to use the product several times, avoiding drying out.
- Second - the company has been operating for over 15 years, offers several types of adhesives, which differ in shape and size. The composition is of high quality, the product instantly adheres to the desired surface, provides emergency assistance in many life situations: peeling off the soles on shoes, a broken kitchen cabinet handle, and others.
- Mastix is a large domestic manufacturer of adhesives for anaerobic sealants and cold welding. Mastic is used in the world market of products, exported to various European countries, used in Russia.
- Henkel is a German brand of adhesives that quickly fill the mass, instantly become solid. The chemical base is a 2-component polyurethane adhesive. The product is used not only in Russia, but also in Europe.
How to avoid buying low-quality silicone and fakes
No one is protected from the purchase of low-quality sealant and fakes, even in large hardware stores. Consider the following to avoid the risk of peeling or cracking of the seal:
- Damage on the label indicates a violation of the storage rules for the sealant. Once the package has been frozen and then thawed, the material cannot be used in it.
- The mass of the tube is more than 340 g with its capacity of 310 ml, testifies to the high content of non-functional impurities in the material.
- If the density of the seal is less than 0.85 g / cm3, it means that the product is of poor quality.
- The inscription "100% silicone" means that the products are falsified.
- The excessively low cost of the sealant also testifies to a fake.
- In any case, the products must have accompanying and warranty documents.
The use of silicone sealant falls into 3 categories:
- compaction of foundations from the outside of buildings;
- sealing of seams and joints inside the premises;
- sealing surfaces in damp rooms.
Take this into account and choose a sealant with a corresponding label on the packaging.
Before purchasing, you should find out the composition of the sealant. A high-quality sealant consists of the following components:
- silicone polymer (26%);
- organic (rubber) mastic (4-5%);
- thiokol, polyurethane polymer and acrylic putty (total volume up to 3%);
- epoxy resin (up to 2%);
- cement additive (up to 0.4%).
Sealants with antiseptic additives must not be used on surfaces that come in contact with food and drinking water. Also, such seals are not suitable for terrariums and aquariums.
An exterior sealant can be used to seal small window gaps. The material will not crack under the influence of ultraviolet radiation and will withstand temperature extremes.
To seal dark wood, mirrors, glass, mosaics, it is best to choose a transparent sealant. It is advisable to process floor joints with a dark seal.
The silicone based seal is available in several varieties. Therefore, it is versatile and can be used to seal seams and joints on any substrate, both indoors and outdoors.
Watch this video. It contains a lot of supplementary information and information on the topic of the article.
How to apply the sealant correctly
In the course of repair work, one way or another, it becomes necessary to use a sealant. But you need to know how to properly apply the sealant, otherwise the work will go down the drain. Usually, silicone sealants are used to fill gaps and cavities in order to seal and protect against various environmental factors, for gluing various surfaces to each other, for sealing seams and joints, for example, in shower cabins, wall joints, for sealing drain pipes, for gluing peeling stone tiles, - for sealing window frames and boxes, etc.
Remember: Silicone sealants should not be applied to wet surfaces.