There are significant differences between solid silicone rubber and liquid silicone rubber in terms of morphology, curing mechanism, and application performance. Solid silicone rubber usually exists in the form of blocks or particles, and needs to be crosslinked through high-temperature vulcanization. The curing process may involve peroxide or platinum catalytic systems, which require a long time to complete the connection of molecular chains. After curing, it forms a high hardness and wear-resistant elastomer, which is commonly used in sealing gaskets, key switches, and other scenarios that require high mechanical strength.

Liquid silicone rubber is presented in the form of a low viscosity fluid and can be directly molded through injection molding or coating processes. Its curing mechanism is mostly based on platinum catalyzed addition reactions, which can quickly crosslink at room or medium temperatures without the need for long-term high-temperature treatment. Some types even eliminate the need for secondary vulcanization steps. After curing, it has high transparency, low volatile organic compound content, and excellent biocompatibility, and is widely used in fields such as infant care products, medical catheters, and electronic packaging that require strict purity and safety.

In terms of physical properties, liquid silicone rubber usually has a wider range of hardness adjustment, from ultra soft to high hardness, and has outstanding elastic recovery ability, while solid silicone rubber is more stable in high temperature resistance and chemical corrosion resistance, suitable for high temperature industrial environments or scenarios in contact with highly corrosive media. There are also significant differences in processing technology between the two. Liquid silicone rubber is more suitable for automated production lines, such as precision injection molding, which can achieve efficient production of complex structural parts, while solid silicone rubber is mostly molded or extruded, suitable for mass production of standard size products.

With the increasing demand for environmental protection and high performance, liquid silicone rubber has shown stronger adaptability in the field of sustainable development due to its low energy consumption, low emission characteristics, and potential for bio based raw material substitution, while solid silicone rubber continues to occupy an important position in traditional industrial applications with its mature process and cost advantages.

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