Silicone Neutral Sealant: an overview, types, features and reviews

Before the invention of silicone sealants, the seams were filled with homemade mastics, all kinds of putty, bitumen compositions that were not able to satisfy all the requirements. When this new material entered the market, the performance of various kinds of repairs was simplified, and their quality also increased.

For reference

The structure of silicone sealant resembles a viscous mixture, which is excellent for sealing joints and cracks, gluing and sealing parts and different areas. After this surface is coated with the material, they are protected from the negative impact and penetration of moisture.

The main types of silicone sealants in composition

Silicone neutral silicone sealant is classified by its component composition. In the manufacture of it can add different substances. For example, the plasticizer makes the material elastic, while the viscosity is imparted to it by the vulcanizer. Rubber acts as the basis, and the tenacity of the composition with the surface is ensured by the primer.

Strength of the manufacturers was achieved thanks to the amplifier, but the color mixture is acquired after the addition of filler. Silicone neutral sealant can be one-component or two-component. The first variety is most often used in repair and construction, whereas two-component mixtures are intended for use in the field of industry.

Alkaline, acidic and neutral sealants can be found on the market. The first are special-purpose blends, and amines serve as their base. If before you the composition, which is indicated by the letter "A", then you should know that this sealant is acidic, it has low cost and is versatile in operation. In the production of acetic acid acts as a base, the odor of which is released upon solidification of the mass. The disadvantage of such mixtures is incompatibility with non-ferrous metals, since they accelerate corrosion processes. It is not recommended to use acid sealants with marble elements, as well as cementitious materials that contain alkaline ingredients. Silicone neutral sealant is combined with surfaces that are made of any materials, this is due to the component composition, which is based on alcohol or ketoxime.

Classification of neutral sealants for fillers and additives

When choosing a certain type of sealant, you should pay attention to the additives that are used in the manufacture of these formulations. To date, there are 4 types of additives, among them:

• Dyes;
• Mechanical fillers;
• Extenders;
• Fungicides.

Pigments are added during manufacture, so the mixture does not stain after drying. Mechanical fillers ensure adhesion of the mass to the surface. If we are talking about mechanical additives, then here it is necessary to include chalk and quartz dust. Extenders in the case of sealants are of natural origin, but they are necessary to reduce the viscosity of silicone. Fungicides destroy fungus and mold. Expand the area of use of a neutral sealant, if you take into account the nature of the additive.

Reviews of neutral silicone sealants

Silicone neutral sealant has some features: it is soft and elastic. In spite of this, very strong materials like silicon, quartz and sand are used in the manufacture. Of these, copolymers are made, which are part of the composition. Consumers identify a number of advantages, using neutral silicone sealants, namely: the ability to stretch, high strength, resistance to sunlight, high adhesion, heat resistance, resistance to natural factors and biostability.

Users argue that the ability to stretch allows you to apply these compounds on mobile connections. Due to the high degree of adhesion, such mixtures can be used between elements of glass, ceramics, metal, wood and plastics. After drying, the silicone neutral transparent sealant can be exposed to aggressive detergent components without losing its properties. If we are talking about a heat-resistant variety, that it will be able to maintain its characteristics even in a temperature range that varies from -50 to +300 ° C.

For the reason that these mixtures are well under the influence of external factors, they can be used not only inside, but also outside the premises. After application, you can not be afraid that bacteria or mold will appear on the sealant itself or on adjacent surfaces.

Negative feedback

The hermetic sanitary silicone neutral has, according to users, some drawbacks. Among them, it should be noted:

• Inability to use on wet surfaces;
• No possibility of staining;
• Insufficiently high adhesion of narrow polypropylene plates.

It is not possible to paint the surfaces of the sealant after it has solidified, when a large volume of organic substances is contained in the composition of the mixture. But insufficient adhesiveness can be noted also between the plates, which are made of polyethylene, polycarbonate or fluoroplastic. According to users, the solution to the problem may be the purchase of a more expensive sealant, which is intended for professional use.

Overview of the characteristics of the silicone neutral sealant mark "Moment"

Sealant "Moment" silicone neutral is odorless, and can be applied at a temperature ranging from +5 to +40 ° C. The heat resistance varies from -40 to +150 ° C. At break, the composition is extended by 200%, and its density can vary from 0.98 to 1.00 g / cm ³ . At 100% elongation, the modulus of elasticity is 0.3 MPa. The mixture undergoes a good exposure to moisture, and the film after application at a temperature of +23 ° C is formed after 15 minutes.

The curing speed at 50% humidity is 2 mm per day. This silicone neutral white sealant is designed to seal and install mirrors, ventilation systems and freezers. It is not recommended to use the mixture on natural stones or to seal aquariums.

Cost

On sale today you can find silicone neutral sealants in a wide range. The most popular is TYTAN Professional, you will have to pay 165 rubles for it. The mixture can be gray, brown, black, colorless or white. If we are talking about the universal composition of PUTECH, then we will have to pay 123 rubles for it.

Conclusion

Neutral silicone sealant, the price of which was mentioned above, can be used in automotive, construction or special works. The universal composition, for example, can be used for small repairs in the home. They can be used for sealing and gluing lanterns, moldings or headlights.

But the silicone car sealant, which often happens to be black, is designed to replace gaskets in the vehicle. For a short time, this mixture can be exposed to a temperature of up to +300 ° C. When applied, the composition does not flow, but in the process of operation it does not lend itself to aging.