Difference between liquid silicone and soft silicone
Liquid silicone, often referred to as Liquid Silicone Rubber (LSR), and soft silicone differ primarily in their physical states, processing methods, and specific applications, despite both being forms of silicone rubber that consist of siloxane polymers. Here are the detailed comparisons:
Physical State
Liquid Silicone: As its name implies, liquid silicone is in a liquid state before solidification. It has good fluidity and can be easily processed into complex shapes through injection molding and other methods.
Soft Silicone: Generally refers to silicone rubber that is relatively soft and flexible after being processed and solidified. It often appears in a solid state under normal conditions with a certain degree of hardness and elasticity.
Processing Methods
Liquid Silicone: Suitable for injection molding technology, which can quickly and efficiently produce fine and complex components and is suitable for mass production. The clamping force and injection pressure required are not high, but the injection accuracy is high.
Soft Silicone: Typically processed through molding or extrusion methods, which are relatively traditional and have lower production efficiency but are suitable for making large or simple-shaped products.
Applications
Liquid Silicone: Due to its excellent fluidity and processability, liquid silicone is widely used in medical equipment, baby products, electronic packaging, automotive seals, and other fields, especially in applications with high requirements for product precision and surface quality. It also has good transparency, tear strength, and low shrinkage rate, and produces fewer by-products during the solidification process, which is environmentally friendly.
Soft Silicone: Because of its good heat resistance, weather resistance, and electrical insulation properties, soft silicone is often used to make gaskets, sealing strips, cable sheaths, anti-slip mats, and other products, which are particularly suitable for outdoor environments and industrial applications. It usually has higher mechanical strength and wear resistance.
In summary, the differences between liquid silicone and soft silicone mainly lie in their physical states, processing methods, and specific applications. Both have their own advantages and are chosen based on specific application requirements, cost considerations, and production conditions.