HTV structure control agent

Structuration definition: after silica silica is added to silicon rubber, the rubber becomes hard in the storage process, its plasticity decreases, and it gradually loses the resmelting and processing performance, which is called structuration.

Structure formation: the hydroxyl on the surface of silica black and the hydroxyl at the end of the silicone rubber and the siloxane chain interact, resulting in the formation of a network structure of the silicone rubber and loss of processing performance.

Anti-structure chemical control agents: diphenyl dihydroxy silane, low viscosity hydroxy silane oil, alkoxy silane, silazane, cyclosilane and borosiloxane, etc.

Surface treatment agent for white carbon black: Silicone oil low molecular, hexamethyldisilazane, one methyl trimethoxysilane and D4. After the treatment of white carbon black from hydrophilic to hydrophobic, methanol value > 60% is excellent in hydrophobicity, and the mixed rubber is not easy to be structured after processing white carbon black.


Characteristics and Application of HTV Silicone Rubber Mixer (I)

(1) silicone rubber has thermal stability

(2) silicone rubber has cold resistance and weather resistance

(3) silicone rubber has excellent electrical insulation volume resistance
Its stable electrical properties over a wide range of temperatures and frequencies, and its electrical insulation properties do not degrade even when immersed in water, make it the most suitable insulating material. Silicone rubber parts around the high pressure part of color TV picture tube: high pressure cap, cable, etc.

(4) silicone rubber has electrical conductivity. Conductive silicone rubber is a mixed rubber with conductive materials such as carbon black. It is widely used in key contacts, heater coils, anti-static and high voltage cable packaging materials.