Selection criteria for plastics processing modifiers
Selection criteria for plastics processing modifiers
The selection criteria of processing modifier are as follows:
(1) and the compatibility of PVC with moderate, compatibility is too small, cannot be evenly dispersed, it is difficult to improve processing performance and improve the impact strength, compatibility is too large will have the effect of plasticizer, difficult to improve the impact strength;
The vitrification temperature (Ta) of processing modifier is low, which can improve the low temperature impact strength of polyvinyl chloride.
High molecular weight and mild crosslinking can enhance the enhancement effect.
The apparent performance and physical mechanical properties of polyvinyl chloride were not significantly affected.
Good weather resistance, small expansibility;
It is easy to mix with resin, preferably with a similar shape and viscosity with polyvinyl chloride.
