Silicone is more and more popular because of its good environmental performance. To understand the knowledge of silicone molds, you must from the silicone raw materials.
1. Ordinary silica gel, also known as precipitated silica gel
Color: translucent, milky white, light yellow, gray, etc.
Hardness: 30°, 40°, 50°, 60°, 70°, etc., commonly used between 40°-70°.
Density: 1.1-1.12g/cm³
Elongation: 400%
Uses: It is mostly used in low-grade silicone products such as mobile phone buttons, miscellaneous parts, and conductive glue.
Meteorological glue, also known as pure silica gel
Color: Transparent.
Hardness: 30°, 40°, 50°, 60°, 70°, 80°, etc., commonly used between 40°-60°.
Density: 1.1-1.12g/c㎡
Elongation: 600%-700%
Features: Due to the good transparency and strong tensile strength of this material. high cost
Uses: Silicone tubes, protective sleeves and other high-end products that require high elasticity.
2. Silica gel raw materials can be divided into solid silica gel and liquid silica gel according to their physical properties.
Solid silica gel is mainly used for molded products. For example: silicone sleeves, silicone tableware, silicone molds, silicone buttons, etc. Liquid silicone is mainly used for extrusion molding products, such as silicone pacifiers, silicone tubes, etc.
Thermal insulation silicone pad, excellent high temperature resistance, silicone (food grade silicone) can withstand high temperature of 200 ℃ and can be used for a long time. Production, color and shape can be customized.