三相存在下聚丙烯/纤维复合发泡材料的力学性能  

Mechanical Properties of Polypropylene/Fiber Composite Foaming Materials Under the Condition of Three-Phase Existing

作　　者：段焕德 王昌银[3] 王醴均[2] 蒋团辉[2] 何力[2,3] 龚维[1,2] 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550001 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《高分子材料科学与工程》2016年第2期71-77,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21264004);黔科合重大专项字(2012)6023;黔科合人才团队[2014]4006

摘　　要：采用密炼方式分别制备碳纤维(CF)、玻璃纤维(GF)、芳纶纤维(AF)增强聚丙烯(PP)母粒,通过注塑成型制备相应的聚丙烯/纤维复合发泡材料,研究了3种纤维对微发泡聚丙烯/纤维复合发泡材料力学性能的影响。结果表明,PP/CF复合发泡材料的综合性能提高的幅度最大,其中拉伸、压缩、弯曲强度分别提高了100.9%,80.4%,126.5%;PP/AF复合发泡材料的韧性最好,相对于纯PP提高了151.2%;并且,PP/CF复合发泡材料的泡孔参数最好,泡孔尺寸为28.97μm,泡孔密度为8.58×106cm^(-3),泡孔尺寸分布达到9.22μm。Polypropylene（ PP） reinforced composites with three different fibers,such as carbon fiber（ CF）,glass fiber（ GF）,aramid fibers（ AF）,were prepared by banburying and then foamed by injection molding method. The effects of different fibers on mechanical properties of microcellular foams were investigated. The results indicate that PP / CF shows the best comprehensive mechanical properties among three fiber reinforced foams,whereas PP / AF exhibits the best toughness. Compared with PP microcellular foams,the tensile,compressive,and flexural strength of the PP / CF increase by 100. 9%,80. 4%,and 126. 5%,respectively while the toughness of PP / AF increases by 151. 2%. In addition,the cell diameter,cell density,and cell size distribution of PP / CF composite are 28. 97 μm,8. 58 × 106cm- 3,and 9. 22 μm,respectively,which exhibit the best cell structure parameter among fiber reinforced foams.

关 键 词：聚丙烯 注塑成型 力学性能 泡孔参数 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]