Processing aid is used in the rubber and blending industries (chemical softeners) to modify the mixing process steps or to assist in a special way, during extrusion, calendaring or molding. Some rubbers, especially natural rubbers and synthetic rubbers that have high viscosity, require an initial chain breakage step during mixing, which is done to soften the rubber for better process ability and increase adhesion after mixing. Process aid also control the rate and speed of chain breakage and help to disperse other mixing materials.
This process reduces shrinkage by reducing molecular mass and thus improves the preparation of the product by extrusion, calendaring and molding methods.
It also has the ability to improve the ability of the PVC process by raising the melting point by decomposing PVC particles at a temperature lower than degradation and can be used in rigid PVC formulations to improve the process ability and surface quality.
|Appearance||white flowing powder|
|Bulk Density g/l||0.45-0.56 g/cc|
|Water content %||Max 0.5|