【作者】 秦军； 谢占金； 金翠霞； 赵杰；

【Author】 Qin Jun~(1,2),Xie Zhanjin~3,Jin Cuixia,Zhao Jie (Key Laboratory of Karst Environment and Geohazard Prevention(Guizhou University), Ministry of Education,Guiyang550003,China;2.National Research Engineering Center for Compounding and Modification of Polymeric Materials,Guiyang550014,China;3.School of Chemistry and Chemical Engineering,Guizhou University,Guiyang550003,China.)

【机构】 喀斯特环境与地质灾害防治教育部重点实验室(贵州大学)； 国家复合改性聚合物材料工程技术研究中心； 贵州大学化学与化工学院；

【摘要】 <正>磷石膏是工业湿法生产磷酸的废渣,主要成分为二水硫酸钙,产出量很大,但利用率极低。磷石膏堆放不仅占用大量的土地,污染环境,还给生产企业带来很大负担,因此拓展磷石膏的应用领域,实现磷石膏的资源化利用具有十分重要意义。更多还原

【Abstract】 The surface of phosphogysum was modified with a variety of surface modifiers. Phosphogysum was modificated with stearic acid by wet process,and were treated with silicane and titanate used by dry ball milling,respectively.The surface of the modified phosphogysum was changed,from hydrophilic to hydrophobic.The reaction mechanism was studied by means of FT-IR and WXRD.By the phase analysis in the WXRD patterns it was showed that the crystal form of phosphogysum did not change.The phosphogysum/PP and modified phosphogysum blend were prepared by melt-mixing process.The results showed that the addition of non-modified phosphogysum would reduce the mechanical properties of the composite.The mechanical properties of the composites were improved after the phosphogysum were modified by modifiers;of whose the most effective modifier was stearic acid.WXRD showed that with the addition of phosphogysum the crystallinity increased because of the heterogeneous nucleating effect,which leaded to the formation ofβcrystalline.That was the modified phosphogysum could strengthen and toughen the composite.更多还原