磷石膏改性及其在高分子材料中的应用

磷石膏的综合利用不仅能解决磷石膏的堆放问题而且还能解决环境污染的问题. 磷石膏改性及其在高分子材料的应用是当前研究热点之一. 本文介绍了磷石膏预处理包括超声改性、有机改性及聚合物接枝改性等；探讨了磷石膏/高分子复合材料的制备方法，有熔融共混、溶液原位聚合、热压成型及本体聚合；讨论了磷石膏/高分子复合材料的结构、力学性能、结晶性能、导电性能及吸湿性能；最后对复合材料的应用前景及发展方向进行了展望. 磷石膏在高分子材料中应用研究将成为解决磷石膏问题的有效途径之一.

Modification of Phosphogypsum and Its Application in Polymer Materials

Abstract:To solve the phosphogypsum accumulation and the environmental pollution，the comprehensive utilization of phosphogypsum can be used phosphogypsum modification and its application in polymer materials is one of the current research hotspots. In this study，the phosphogypsum pretreatment technologies were introduced including ultrasound modification，organic modification and polymer grafting modification，etc.，and the preparation methods of phosphorusgypsum-polymer composite such as melt blending，in situ polymerization，extrusion molding and bulk polymerization were discussed. The structure， mechanical properties，crystallization properties，conductivity and moisture absorption performance of phosphogypsum-polymer composites were also analyzed. Finally，we provide an outlook for the application prospect and development direction of composite materials. It is expected that the application of phosphogypsum in polymer material would be one of the effective ways to solve the problem of phosphorus gypsum.