PP／PA6／oMMT纳米复合材料制备及其振动力场下发泡性能研究  

Study on Preparation of PP/PP6/OMMT Nanocomposites and Foaming Properties with Vibration Force Field

作　　者：彭响方 胡志钢 米皓阳 夏华新 经鑫 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心,聚合物成型加工工程教育部重点实验室,广东广州510640

出　　处：《中国塑料》2011年第6期49-53,共5页China Plastics

基　　金：国家自然科学基金(51073061);广东省自然科学基金(9151064004000010)

摘　　要：利用复合引发剂(过氧化二异丙苯/过氧化苯甲酰)自制马来酸酐接枝聚丙烯(PP-g-MAH)作为相容剂,制备了聚丙烯/聚酰胺6/马来酸酐接枝聚丙烯/纳米有机黏土(PP/PA6/PP-g-MAH/OMMT)复合材料,研究了相容剂和纳米OMMT含量对复合体系力学性能的影响,并利用自制超临界CO2塑料动态发泡实验装置,研究了发泡温度、转子转速、振动力场对复合材料发泡性能的影响。结果表明,在复合材料配比为PP/PA6/PP-g-MAH/OMMT=100/30/15/3时,与纯PP相比,复合材料的熔体强度提高了163%,冲击强度提高了41%,拉伸强度提高了8.4%;在剪切力场上叠加振动力场,有助于改善泡孔形状,均化泡孔分布,提高泡孔密度。Maleic anhydride （MA） was grafted onto polypropylene （PP） using a composite mmator of dicumyl peroxide/benzoyl peroxide, which was used as a compatibilizer in a composite of PP/ PA6/ organno-montmorillonite （OMMT）. The effect of contents of the compatibilizer and OMMT on the mechanical properties of the composite was studied. A supercritical CO2 dynamic microcellular setup was used to research the foaming properties of the composites including foaming temperature, rotor rate, and vibration force. It showed that compared with neat PP, the melt strength, impact strength, and tensile strength increased by 163%, 41% and 8. 4%, respectively. By superimposing a vibration field on the shear stress field, the distribution of cells was homogenized and the density of cells was increased.

关 键 词：聚丙烯 聚酰胺6 纳米有机黏土 复合材料 力学性能 熔体强度 振动力场 发泡性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]