PP/Nano-SiO_2包覆长石复合材料的制备、性能及结构表征  

Properties and Structure Characterization of PP/Nano-SiO_2 Coated Feldspar Composites and Its Preparation

作　　者：刘继波[1,2] 甄卫军[1,2] 孙金陆[1,2] 韩卫[1,2] 陈进江 柳波 邓玉凡 

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046 [2]新疆大学石油天然气精细化工教育部(自治区)重点实验室,新疆乌鲁木齐830046 [3]新疆农十三师兴达矿业责任有限公司,新疆哈密839000

出　　处：《塑料科技》2013年第4期55-59,共5页Plastics Science and Technology

基　　金：新疆生产建设兵团科技攻关和重点科技项目(2011BA023);北京化工大学化工资源有效利用国家重点实验室开放课题(CRE-2011-C-203)

摘　　要：采用纳米二氧化硅(nano-SiO2)对长石填料进行表面修饰改性,且对其表面包覆形貌进行了分析和表征。以nano-SiO2包覆改性长石为填料制备了聚丙烯(PP)/包覆长石复合材料,并对其力学性能、热稳定性进行了研究。结果表明:当包覆长石用量为3%时,复合材料的拉伸强度和断裂伸长率均达到最大值;同纯PP相比,该复合材料的热稳定性和韧性有所提高;另外,nano-SiO2包覆长石粉体对PP具有异相成核作用,提高了PP基体的结晶度。Nano-SiO2 were used to modify the surface of feldspar fillers,and the surface morphology of the modified feldspar were characterized and analyzed.Polypropylene（PP）/modified feldspar composites were prepared by filling the nano-SiO2coated feldspar with PP,and the mechanical properties and thermal stability of the composites were studied.The results show that the maximum tensile strength and elongation at break are obtained when the coated feldspar content is 3%.Compares with pure PP,the thermalstability and toughness of the PP/nanoSiO2 coated feldspar composite improve.Moreover,the nano-SiO2 coated feldspar shows the nucleation heterogeneous effect on PP,which improves the crystallization of PP matrix.

关 键 词：长石 聚丙烯 纳米二氧化硅 性能 结构 

分 类 号：TB332[一般工业技术—材料科学与工程]