Research on Improvement of Impact Strength of Polystyrene
A method for improving the impact strength of universal polystyrene was studied,which involves reacting materials containing styrene monomers and four functional peroxide initiators in a series of first,second,and main reactors;Among them,the four functional peroxide initiator is 2,2-di(4,4-di(tert butylperoxide)cyclohexyl)propane.The universal polystyrene prepared by the method of the present invention maintains good molecular weight and processing performance while significantly improving its impact performance.Its weight average molecular weight is≥320000 g/mol,molecular weight distribution is≥2.7,and notch free impact strength is≥20 kJ/m2.
PolystyreneImpact strengthFour senses can pass oxideProcessability
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