煤矸石电厂灰渣改性填充聚丙烯复合材料的性能  

Properties of modified coal gangue power plant ash filled polypropylene composite materials

作　　者：孙志明[1] 郭永昌[1] 段永威 杜缘生 吴翠平[1] 郑水林[1] SUN Zhiming;GUO Yongchang;DUAN Yongwei;DU Yuansheng;WU Cuiping;ZHENG Shuilin(College of Chemical and Environmental Engineering,China University of Mining and Technology （Beijing）, Beijing 100083, China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《中国粉体技术》2018年第3期1-5,共5页China Powder Science and Technology

基　　金：固废资源化利用与节能建材国家重点实验室开放课题项目;编号:SWR-2014-004

摘　　要：采用不同的改性剂对煤矸石电厂灰渣进行表面改性,将改性后灰渣与聚丙烯(PP)混合均匀,通过挤出注塑得到灰渣-聚丙烯复合材料,并测试其力学性能;利用SEM、FT-IR、DSC等分析方法,研究改性灰渣对复合材料力学性能与结晶行为的影响规律。结果表明,采用硅烷偶联剂SCA1113和SCA503组成的复合偶联剂体系对灰渣改性效果最好,改性后灰渣-PP复合材料较改性前的拉伸强度由25.70 MPa增加至29.58 MPa,弯曲强度由33.60 MPa增加至35.99 MPa,冲击强度由3.04 kJ·m^(-2)增加至3.85 kJ·m^(-2);改性后的灰渣在聚丙烯中起到异相成核的作用,使聚丙烯的结晶温度提高,结晶速率增大,微晶尺寸分布变窄。Ultra-fine coal gangue power plant ash was modified with different surface modification agent, and blended with polypropylene（PP）. Ash-PP composite material was obtained by extrusion and injection molding, and its mechanical properties were also measured. The effects of modified ash on the mechanical properties and crystallization behavior of composite materials were studied by the SEM, FT-IR and DSC. The results show that the modification effect of silane coupling agent SCA1113 and SCA 503 are optimal. The tensile strength, the bending strength,and the impact strength increase from 25.70 to 29.58 MPa, 33.60 to 35.99 MPa, and 3.04 to 3.85 k J·m^-2 respectively. The modified ash in the composite plays an important role in the polypropylene because of heterogeneous nucleation effect, to increase the crystallization temperature of polypropylene and the crystallization rate, and decrease the crystallite size distribution.

关 键 词：煤矸石电厂 灰渣 聚丙烯 硅烷偶联剂 力学性能 

分 类 号：TQ327[化学工程—合成树脂塑料工业]