Vulcanized butyl pressure sensitive adhesive

Chinese pressure-sensitive adhesive industry has a history of more than 30 years, but for a long time it mainly stays in the production of medical adhesive cloth and black adhesive cloth for insulation. The research, development, preparation and application of pressure-sensitive adhesive have been increasingly active in the last decade.

Because the pressure sensitive adhesive has the advantages of low price, convenient use, no pollution on the surface of the adhesive, and the products have the bonding, decoration, enhancement, protection, fixing and other functions, so many new and efficient pressure sensitive adhesive preparation methods and products have been widely used in printing, packaging, medical health and daily life and other fields. Rubber pressure sensitive adhesive mainly refers to solvent-based pressure sensitive adhesive.

Rubber pressure sensitive adhesive is composed of rubber elastomer, adhesive, softener, antioxidant and other groups. Only mild pressure can be applied to achieve the purpose of bonding. Butyl rubber pressure sensitive adhesive is a kind of rubber pressure sensitive adhesive, which has excellent air tightness, weather resistance and chemical corrosion resistance of butyl rubber. It is mostly used for sealing rubber strips or automobile inner tubes. However, the molecular structure of butyl rubber is highly saturated long chain linear molecular structure, which is an amorphous polymer.

The force between the internal molecular chains is weak, the cohesion is poor, there is no rigid chain segment on the molecular chain (such as benzene ring), the glass transition temperature is -105℃, and it is easy to deformation, slip between different chain segments, cold flow is easy to occur in normal temperature environment, and the temperature rises.

The molecules move faster and the forces between the chains drop rapidly. The traditional butyl adhesive pressure sensitive adhesive has some disadvantages such as small cohesive energy, serious cold flow and poor heat resistance, so it is limited in application.

As a professional acrylic pressure sensitive adhesive supplier, Smprotectivefilm is committed to solving the glue problems encountered by customers due to different production equipment and processes.

Compared with traditional solvent-based pressure sensitive adhesive, our emulsion pressure sensitive adhesive has the advantages of environmental protection, safety and easy operation. Using deionized water instead of traditional solvent reduces the pollution to the environment and is an ideal environmental protection product.

By adjusting the proportion of curing agent, pressure sensitive adhesive with different adhesive force can be obtained to meet the needs of different applications. Suitable for a variety of materials, transparent after drying.