Classification and characteristics of silicone raw materials

Aug 12, 2022

Silicone tube strips and silicone shaped tube strips can be divided into extruded tubes and shaped tube strips. It is mainly made of silica gel, also known as raw silicone rubber, added to a double-roll rubber mixing machine or a closed kneader, and white carbon black and other additives are gradually added to make the product uniformly through extrusion according to the technical standards of the industry.

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Because of its unique environmental protection characteristics, silica gel is becoming more and more popular among people, and it is gradually replacing other material products, such as kitchen utensils, baby products, and other products that are closely related to people's lives!

1. Silicone raw materials can be divided into domestic materials and imported materials according to their sources.

2. According to performance, silica gel raw materials can be divided into ordinary silica gel and meteorological silica gel.

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Ordinary silica gel, also known as precipitated silica gel

Color: translucent, milky white, light yellow, gray, etc.;

Hardness: 30°, 40°, 50°, 60°, 70°, 80°, etc., commonly used between 40°-70°;

Density: 1.1-1.12g/cm2;

Elongation: 400%;

Purpose: The most used are mobile phone buttons, miscellaneous parts, conductive glue and other low- and medium-grade silicone products.

Meteorological silica gel, 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/cm2; elongation: 600%-700%;

Features of silicone tube: Because this material has good transparency and strong tensile strength. High cost;

Uses: Silicone tubes, protective sleeves and other high-end products that require high flexibility.According to Wikipedia, silicone rubber is  used in automotive applications, many cooking, baking, and food storage products, apparel including undergarments, sportswear, and footwear, electronics, to home repair and hardware, and a host of unseen applications.[1]Liquid silicone rubber is also manufactured for life science applications (syringe pistons, closure for dispensing system, gaskets for IV flow regulator, respiratory masks, implantable chambers for IV administration), cosmetic products (Mascara brush, make-up packaging, make-up applicator and lipstick moulds) and optics products (circular lens, collimators , Fresnel lenses and free form lenses ).[2]

Reference:

[1]Silicone rubber

[2]“CVA SILICONE | 液态硅橡胶 LSR | 您的行业”


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