If it is made into a finished product, it is generally not easy to distinguish.
As for the raw materials, it can be seen that one is solid and the other is liquid. Now let's talk about the difference between the two materials:
1. Appearance of liquid silicone and solid:
(1) As the name suggests, liquid silicone is in a liquid state and has fluidity,
(2) Solid silicone is solid and has no fluidity!
2. Application areas of liquid silicone and solid silicone:
(1) Liquid silicone is generally used in baby products, kitchen supplies, and medical supplies, and can come into direct contact with food and the human body,
(2) Solid silicone is generally used in daily necessities, industrial miscellaneous parts, and automotive accessories, with a wide range of applications,
3. Safety of solid silicone and liquid silicone:
(1) Liquid silicone is a highly transparent and safe food grade material that does not add vulcanizing agents or other auxiliary materials during molding, and is sealed for feeding and molding.
(2) Solid silicone is a transparent and environmentally friendly material that requires the addition of a vulcanizing agent to accelerate the vulcanization molding time. Open mold feeding is used for molding,
4. Forming methods for liquid silicone and solid silicone:
(1) Liquid silicone is injection molded liquid silicone rubber (LSR): its full name is injection molded liquid silicone rubber, and the vulcanization equipment is an injection molding machine.
The injection molding machine has a very simple process flow (without the need for manual processes such as ingredients, rubber mixing, cutting, and placement in high-temperature glue technology, only one worker is needed to pick up the product), high product accuracy (all manual procedures before molding are replaced by machines), high output (A/B glue is mixed at a certain temperature for a few seconds to form), and many advantages such as saving manpower, electricity, and materials. It can produce all products produced with high-temperature glue! It will be a mainstream trend in the development of silicone rubber materials in the coming years.
(2) Solid silicone molding is a process in which the raw material is solid blocks, which are mixed by a mixer and then cut into products and molds of appropriate size and thickness by a cutting machine. The products are then placed in molds and molded under a pressure molding machine at a certain temperature. When demolding, it is similar to plastic products and also requires cleaning the mold.
5. How to distinguish between liquid silicone and solid silicone products
(1) Liquid silicone has high transparency, no odor, and the product has a glue injection port.
(2) Solid silicone transparent bottom, with the fragrance of vulcanizing agent or other covering vulcanizing agents, the product has no injection port.

High Resilience Fumed Type Silicone Rubber