Study on Properties of IPP /Needle-like Wollastonite Composite Material

IPP /wollastonite composite material was prepared with needle-like wollastonite,PP-g-MAH and iPP blending by co-rotation twin-screw extruder.The effects of blending process conditions,contents of PP-g-MAH and wollastonite on mechanical properties and melt flow rate of iPP / wollastonite composite were studied.The features of wollastonite before and after blending and the morphology of the impact fracture features of iPP / wollastonite composite material were observed with optical microscope and SEM.The results showed that the mechanical properties of iPP / wollastonite composite materials were improved with side feeding of wollastonite and lower screw speed.The properties of composite materials were improved with the increase of the content of wollastonite.When the content of PP-g-MAH was at 1%,wollastonite at 30%,the me-chanical properties of iPP / wollastonite composite materials were the best.