Preparation and Properties of Impact-resistant Improved Light Cross-linked Syndiotactic Polypropylene Composite
An modification agent was prepared through the reaction of caprolactone and lignin.This agent,along with a crosslinking agent and sulfur,was blended with syndiotactic polypropylene(sPP),resulting in a micro-crosslinked sPP composite prepared through extrusion crosslinking.The mechanical properties,fluidity and thermal stability of the resulting micro-crosslinked sPP composites were tested.Experimental results indicated that the composite achieved optimal mechanical properties with a ratio of PP,crosslinking agent,modification agent,and sulfur at 100/0.2/1.0/0.3,and the maximum bending strength and impact strength of the composite were increased by 11％and 116％,respectively,compared with pure sPP.
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