What is "silicone color paste"? Color paste is an auxiliary material when refining silicone rubber raw material, also known as "Color Masterbatch". The substances used to change the color of silicone rubber products provide various color pastes of different specifications according to different properties and formulas, so as to achieve the fundamental purpose of beautiful products and increasing the added value of products.

Characteristics of silicone rubber color paste I: hue

Hue refers to the bright color of silicone rubber products after coloring.

Silicone rubber color paste characteristics II: coloring power

Coloring power refers to the influence of the color of silicone rubber paste on the whole mixed compound. The stronger the coloring power, the greater the influence on the color of the compound. In this way, the amount of silicone rubber paste can be reduced to reduce the cost. Generally speaking, the particle diameter of silicone rubber paste decreases and the coloring force increases.

Silicone rubber color paste characteristic 3: hiding power

Hiding power refers to the ability of silicone rubber color paste to prevent light from penetrating silicone rubber. The hiding power is used for the transparency of the surface of silicone rubber color paste. The greater the hiding power, the worse the transparency. The hiding power depends on the difference between the refractive index of silicone rubber color paste and the refractive index of silicone rubber. The greater the correlation, the greater the hiding power. Inorganic silicone rubber color paste has large covering power and is only suitable for large transparent color silicone rubber products (the functional role of transparent and color silicone rubber products), while silicone gel color paste has small covering power and is suitable for color transparent silicone rubber products.

Silicone rubber color paste characteristic IV: dispersibility

Silicone rubber color paste should be easy to disperse evenly in silicone rubber. Only when silicone rubber color paste is evenly dispersed in rubber in the state of small particles, can excellent coloring effect be obtained.

Silicone rubber color paste characteristics V: thermal stability

Thermal stability refers to that the colored silicone rubber paste will not decompose or change color when heated during processing, especially when vulcanized at high temperature (130 ~ 170 ℃), and has steam resistance.

Silicone rubber color paste characteristic 5: weather resistance

It refers to the resistance and light resistance of silicone rubber paste to ozone. From the optical point of view, the shorter the wavelength of light, the more serious the damage to the compound during irradiation. The order of the ability to resist sunlight exposure is: white, jade, blue, red, purple and black.

Silicone rubber color paste characteristic 6: chemical stability

Chemical stability means that the silicone rubber color paste shall have solvent resistance, drug resistance, acid resistance and oxidation resistance, and shall not react with other compounding agents in the rubber, and shall not react with sulfur during vulcanization.

Silicone rubber color paste characteristic 6: migration resistance

Migration resistance mainly refers to that the silicone rubber color paste in silicone rubber products will not be extracted by water or organic solvent and will not seep color. When in contact with other objects, the silicone rubber color paste will not pollute adjacent objects due to migration, and the silicone rubber color paste will not spray on the surface.