Synthesis,rheological behavior,and mechanical properties ofgraft-type acs resin

摘要

Grafte-type ACS resin and alpha-methylstyrene (alpha-Mst)-containing ACS were synthesized by suspension polymerization.The effect of concentration of initiator and polyvinyl alchol (PVA) on reaction was discussed.The graft efficiency (GE) increased with the increasing concentration of initiator in the first stage,but it began to decrease when the initiator concentration exceeded 3.3-3.5*10~(-4) molL~(-1).The GE decreased gradually with the increasing concentration of PVA.The rheological behavior,mechanical properties,and morphological structure of resins were studied.The rheological behavior became worse with the increasing content of chlorinated polyethylene and the melt is a pseudo-plastic liquid.The impact strength of graft-type ACS resin increased as the content of chlorinated polyethylene increased.The rheological behavior and impact properties of alpha-Mst-containing ACS resin got better because of the introduction of alpha-Mst,and the comprehensive properties was the best at the 5 alpha-Mst content of ACS resin.