Self adhesive liquid silicone rubber (LSR) is a two-component addition molded silicone elastomer that can firmly adhere to various substrates during the heating and vulcanization process without the need for primer or surface treatment agents. Traditional liquid silicone rubber, due to its strong chemical inertness, is difficult to combine with other materials and usually requires a tedious primer process.

Self adhesive liquid silicone rubber, through a special formula design, introduces a bifunctional active thickening component into the system, allowing it to directly chemically bond with engineering plastics such as polycarbonate (PC), polybutylene terephthalate (PBT), polyamide (PA), as well as metal, glass and other substrates during platinum catalyzed hydrosilylation reaction curing, forming a high-strength permanent bond. Its bonding strength is often higher than the cohesive strength of the material itself.

The core advantage of this material lies in its "selective bonding" property, which achieves high-strength bonding with the target substrate while exhibiting excellent demolding properties for commonly used metal molds in industrial production, without sticking to the mold. This feature perfectly adapts to the automated production processes of injection molding and compression molding, eliminating the waiting time for primer spraying, baking, and volatilization, greatly simplifying the production process, and improving production efficiency.

In addition, self-adhesive liquid silicone rubber inherits the excellent physical properties of liquid silicone rubber, with high tear strength, tensile strength, high and low temperature resistance (-50 ℃ to 200 ℃), UV resistance, and chemical corrosion resistance. It also has a fast vulcanization rate and meets environmental and food grade safety standards.

In the application field, self-adhesive liquid silicone rubber is a key material for achieving the integration of soft and hard materials in modern precision manufacturing. In the consumer electronics industry, it is widely used in the manufacturing of smartphone protective cases, waterproof buttons, wearable device watch straps, and headphone cases, effectively improving the sealing, durability, and comfort of products.

In the automotive industry, it is used for sealing components such as headlights and sensors, as well as for covering interior parts, replacing the traditional bottom coat and silicone solution. In the medical and kitchen and bathroom fields, it is used to manufacture respiratory masks, catheters, as well as waterproof sealing rings for sinks and bathtubs, ensuring the biocompatibility and long-term hydrolysis resistance of the products.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber