Liquid silicone rubber, also known as liquid silicone rubber (LSR), is a two-component thermosetting elastic material catalyzed by platinum. Its emergence completely rewrote the game rules of silicone rubber processing. Unlike traditional solid high-temperature vulcanized silicone rubber, liquid silicone rubber has excellent fluidity at room temperature, extremely fast vulcanization speed, and can be cured within seconds. This inherent processing advantage has quickly made it a darling in the field of high-precision manufacturing.

From the perspective of molecular structure, liquid silicone rubber is based on linear polydimethylsiloxane as the basic polymer, and the main chain of the molecule is composed of alternating silicon and oxygen atoms, endowing it with excellent properties of both organic and inorganic polymers. According to the distribution position of functional groups in the molecular structure, liquid rubber can be divided into two categories: remote claw type and non remote claw type. The former has functional groups located at both ends of the molecular chain, while the latter is randomly distributed in the main chain. This molecular design directly determines the final crosslinking mode and mechanical properties of the material.

The performance of liquid silicone rubber can be considered comprehensive. Its temperature resistance range is as wide as minus 50 degrees Celsius to 250 degrees Celsius, and it maintains stable physical and mechanical properties even under extreme temperature differences. It has excellent biocompatibility, is non-toxic and odorless, can fully meet food grade requirements, and has passed strict FDA certification, making it a fish in water in the medical and food fields. At the same time, it has excellent electrical insulation performance, with a volume resistivity of over 1.0 × 10 ¹⁴Ω· cm and a dielectric constant as low as 4 or below, making it an ideal choice for electronic component encapsulation insulation. In addition, liquid silicone rubber has high tear resistance, good resilience, resistance to yellowing, aging, and a linear shrinkage rate as low as 0.1% or less - these characteristics make it almost irreplaceable in the field of precision replication.

Speaking of applications, liquid silicone rubber has already penetrated into every aspect of our lives. In the medical field, it is used to manufacture catheters, infusion seals, hearing aid components, baby pacifiers, and even long-term implants. Its biocompatibility and high-temperature sterilization resistance make it an indispensable material for medical device manufacturing. In the electronics industry, transparent gel encapsulated electronic components can not only be shockproof and waterproof, but can also be directly used to detect faults, and can be re encapsulated and repaired after damage. This "reversible protection" is almost impossible to achieve in other materials. In the field of maternal and child products, liquid silicone rubber is almost present in food grade products such as pacifiers, complementary food molds, and kitchen utensils. In the automotive industry, it undertakes the manufacturing tasks of key components such as engine seals, shock absorbers, socket seals, LED headlights, etc. Even on the surface of umbrella cloth, transparent liquid silicone rubber can form a hydrophobic protective layer, with UV resistance, making it impossible for a drop of rainwater to stay.

Since the late 1980s, liquid silicone rubber has undergone nearly forty years of industrial production. From initially narrow application areas to now covering almost all high-end manufacturing scenarios such as healthcare, electronics, automotive, aerospace, food, and construction, every step of its expansion confirms a truth: when a material has the genes of safety, precision, efficiency, and multifunctionality at the same time, it is destined not to be buried.

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