矿物填料填充PP复合材料的制备及性能研究  

Preparation and Properties of PP Composites Filled with Mineral Fillers

作　　者：张陶忠 陈晓龙[2] 郝晓宇 于福家[2] ZHANG Tao-zhong;CHEN Xiao-long;HAO Xiao-yu;YU Fu-jia(Shanxi Zijin Mining Group Co.,Ltd.,Xinzhou 034000,China;College of Resource and Civil Engineer,Northeastern University,Shenyang 110819,China)

机构地区：[1]山西紫金矿业有限公司,山西忻州034000 [2]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《塑料科技》2022年第4期19-22,共4页Plastics Science and Technology

摘　　要：以颗粒状碳酸钙(CaCO_(3))、纤维状硫酸钙晶须(CaSO_(4))与片层状云母(Mica)为填料,聚丙烯(PP)为基体树脂,通过熔融共混法制备PP/矿物填料复合材料,研究不同结构矿物填料对PP复合材料的影响。结果表明:矿物填料的加入均降低PP复合材料的拉伸强度、提升PP复合材料的拉伸弹性模量。Mica明显增强PP复合材料的拉伸弹性模量,当Mica添加量为40%,PP复合材料的拉伸弹性模量较纯PP提升175.0%。CaCO_(3)明显增加PP复合材料的断裂伸长率。矿物填料均对PP起增韧作用,Mica的增韧效果最好。当Mica添加量为10%,PP复合材料的缺口冲击强度比纯PP提高48.45%。矿物填料的加入均使PP复合材料的流动性能减弱,CaCO_(3)对PP复合材料的流动性能影响较小,而Mica使PP复合材料的流动性能大幅度降低。当Mica添加量为40%,PP复合材料的熔体流动速率较纯PP下降40.72%。3种矿物填料在PP复合材料中均存在一定的团聚现象,与PP相容性较差,存在明显的界面缺陷。calcium PP/mineral filler composites were prepared mica by melt as blending fillers with granular calcium (PP) carbonate matrix (CaCO_(3)),fibrous resin.sulfate fillers whisker with (CaSO_(4)) and lamellar (Mica) and polypropylene The as The effects of mineral different structures PP on PP composites and were studied.results show that the addition of mineral fillers decreases enhance tensile tensile strength elastic of composites of increases tensile the elastic modulus amount of PP Mica composites.is Mica can significantly modulus modulus PP composites.that When addition of 40%,tensile at elastic of of PP composite is 175.0%have higher than of pure PP.CaCO_(3 )significantly Mica increases elongation break PP of composites.Mica Mineral notched fluidity fillers toughening effect on PP,is and has the best toughening effect.PP.When the content is 10%,impact of strength of PP composite 48.45%effect higher than that PP of pure The while addition Mica of mineral fillers weakens PP composites.CaCO_(3 )has little is on fluidity of of composite,composite greatly by reduced fluidity of PP pure composite.PP.When three the content of of Mica 40%,have melt flow rate PP is decreased 40.72%compared with The kinds mineral fillers certain agglomeration in PP composites,poor compatibility with PP,and obvious interfacial defects.

关 键 词：聚丙烯 矿物填料 力学性能 流动性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]