聚丙烯/磷石膏复合材料性能

The Properties of PP/Phosphogypsum Composites

将磷石膏(PG)经过一定的预处理后,按不同质量分数(20%,30%,40%,50%)与聚丙烯(PP)进行熔融共混,制得PP/PG复合材料。通过力学测试、差示扫描量热(DSC)仪、X射线衍射(XRD)仪、热变形温度(HDT)等分析测试,研究不同填充含量的磷石膏对PP结构与性能的影响。结果表明,添加一定量的PG能够提高PP/PG复合材料的韧性。添加不同量的PG使PP/PG复合材料的HDT均有不同程度的提高。PG对PP有异相成核作用,且能够提高PP材料α晶的成核效率。

Phosphogypsum(PG)was preprocessed by certain method.PG was fused with polypropylene(PP)in different proportions(20%,30%,40%,50%)to produce PP/PG composite.The influence of different filling content of phosphogypsum on the structure and performance of PP was studied through mechanical properties,differential scanning calorimetry(DSC),X-ray diffraction(XRD),thermal deformation(HDT)and other tests.The results show that a certain amount of PG can improve the toughness of PP/PG composite.The HDT of PP/PG composites with different additives are improved to different degrees.PG has heterogeneous nucleation effect on PP and it can improve theα-crystal nucleation efficiency of PP material.