应用CaCO_3/SiO_2纳米复合技术改性聚丙烯的研究  

Application of CaCO_3/SiO_2 nano-composite technology in modifying polypropylene

作　　者：江晓翊[1] 谢刚[1] 耿凯[1] 任德财[1] 张蕾[1] 彭宁[1] 

机构地区：[1]黑龙江大学化学化工与材料学院功能高分子重点实验室,哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2010年第1期95-99,125,共6页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省科技厅攻关项目(GC07A404)

摘　　要：为研究高性能、低成本的汽车保险杠专用料,采用溶胶-凝胶法制备了CaCO3/SiO2纳米复合粒子,并通过红外吸收光谱、X光电子能谱、透射电子显微镜对CaCO3/SiO2复合粒子的形貌和组成进行了分析。把制得的CaCO3/SiO2纳米复合粒子填充在聚丙烯(PP)中,对其弯曲强度(σw)、弯曲模量(Ew)、冲击强度(I)、拉伸强度(σf)、拉伸模量(Ef)以及硬度(HD)进行了测试。结果表明:纳米复合粒子的加入使聚丙烯材料的邵氏硬度从49增加到58,当纳米复合粒子的质量含量在5%时,PP复合材料的拉伸强度和弯曲强度有所提高,而对材料的冲击强度影响不大。The purpose to prepare a new type of inorganic nano-filler which filling into the polypropylene（PP）,furthermore,to apply in the manufacturing of a special car bumper material with high-performance and low-cost.The sol-gel method has been used to prepare nano CaCO3/SiO2 composite particles.Subsequently,the morphology and composition of the resulting composite particles＇ surfaces using a combination of infrared absorption spectroscopy（IR）,X-ray photoelectron spectroscopy（XPS） and transmission electron microscopy（TEM）,were investigated.The bending strength（σw）,bending modulus（Ew）,tensible strength（σf）,tensible modulus（Ef） impact strength（I）,as well as hardness（HD）of the suitable polypropylene（PP）,filled with CaCO3/SiO2 composite nano-particle,were tested.The results indicate that the Shore hardness of polypropylene material supplemented with CaCO3/SiO2 nano-composite particles increased significantly from 49 to 58.When the amount of CaCO3/SiO2 nano-composite particles incorporation is around 5 wt %,the tensile strength and flexural strength of the PP composite material increase,nevertheless,the impact strength of the material is not obviously influenced.

关 键 词：纳米复合粒子 聚丙烯 溶胶-凝胶法 复合材料 

分 类 号：O621[理学—有机化学]