Preparation of High Rigid and High Heat-resistant Polypropylene by Combination of Sodium Phosphate and Talc

doi:10.19491/j.issn.1001-9278.2018.11.017

Abstract

Abstract: The polypropylene (PP)/Talc compounding system and polypropylene/sodium phosphate nucleating agent (NA-40)/Talc compounding system were prepared by a melt mixing method, and the effect of Talc content on the mechanical properties, heat resistance, flow properties and crystallization temperature of two compound systems was investigated.The reasons for improvement in mechanical properties of compounding systems were analyzed by a dynamic method.The results indicated that the compounds achieved the flexural modulus of 2 316 MPa, a heat distortion temperature of 120 ℃ and a crystallization temperature of 132.9 ℃ when 0.2 wt % of NA-40 and 10 wt % of Talc were added into PP. Meanwhile,the flow properties of the compounds seemed not to change. These results meetthe requirements of PP for high rigidity and high heat-resistance.

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