Effect of Surface Treatment on the Mechanical Property and Micro-Structrue of Polypropylene/Attapulgite Composites

Li Li Xu; Tao Long; Sheng Peng Liu

doi:10.4028/www.scientific.net/AMR.399-401.453

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Effect of Surface Treatment on the Mechanical...

Effect of Surface Treatment on the Mechanical Property and Micro-Structrue of Polypropylene/Attapulgite Composites

Abstract:

Attapulgites (AT) were modified by coupling agent 3-(trimethoxysilyl) propyl methacrylate ( KH570 ). Then, the modified AT (MAT) and unmodified AT particles were compounded with Polypropylene (PP) to prepare PP/MAT and PP/AT composites respectively. Their structure and properties were characterized by mechanical testing, differntial scanning calorimetry (DSC) and Scanning electron microscopy (SEM). The results showed that the tensile strength of PP/MAT and PP/AT composites were both improved by filling of 1~7 wt% AT particles. The izod impact strength of PP/MAT composites were increased obviously than that of PP/AT composites with AT content of 1~7 wt% , and it attain the most at 1 wt% filler loading. The crystallization temperature of PP/MAT composites was increased than that of PP/AT composites and pure PP. The degree of supercooling was decreased indicates that the crystallization rate of polymer is improved. The crystallization rate of the PP phase is enhanced in the PP/MAT composites due to the introduction of homogeneous dispersed AT modified by KH570 and good interface adhesion between the AT and PP matrix.