HDPE/改性蛭石复合材料的制备与气体阻隔性能研究  

Preparation and Gas Barrier Properties of HDPE/Modified Vermiculite Composites

作　　者：刘会鹏 潘凯[1] 高源[2] 卢晓英[2] 陈轲 LIU Huipeng;PAN Kai;GAO Yuan;LU Xiaoying;CHEN Ke(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Research Institute of Pertochemical Industry,Petro China Company Limited,Beijing 102206,China;Institute of Plastic Machinery and Engineering,Beijing University of Chemical Technology,,Beijing 100029,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中国石油天然气股份有限公司石油化工研究院,北京102206 [3]北京化工大学塑料机械及塑料工程研究所,北京100029

出　　处：《塑料工业》2024年第1期46-51,共6页China Plastics Industry

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目[2020E-2801(GF)]。

摘　　要：利用改性后的蛭石作为填充材料,通过熔融共混法制备了高密度聚乙烯(HDPE)/改性蛭石复合材料。研究了改性蛭石的添加量对复合材料热稳定性能、结晶性能、力学性能和氧气阻隔性能的影响。结果表明,相比纯HDPE,HDPE/改性蛭石复合材料仍能保持较好的拉伸强度,当含量为1%时拉伸强度为24.1 MPa,断裂伸长率先提高后下降,当含量为0.5%时断裂伸长率达到最高为535%;改性蛭石的加入提升了材料的韧性,当改性蛭石含量为1%时材料缺口冲击强度达到最高为45.8 kJ/m^(2);HDPE/改性蛭石复合材料的氧气阻隔性能明显提升,当改性蛭石含量为1%时材料的氧气阻隔性能达到最优,氧气渗透系数为6.9×10^(-15)cm^(3)·cm/(cm^(2)·s·Pa)。High density polyethylene(HDPE)/modified vermiculite composites were prepared by melt blending method using modified vermiculite as filler material.The effects of the addition of modified vermiculite on the thermal stability,crystalline properties,mechanical properties and O2 barrier properties of the composites were investigated.The results show that HDPE/modified vermiculite composites retain good tensile properties comparing to pure HDPE,with elongation at break of 535%at 0.5%and tensile strength of 24.1 MPa at 1%.The addition of modified vermiculite improves the toughness of the material,with the highest impact strength of 45.8 kJ/m^(2)at 1%of modified vermiculite.The O 2 barrier performance of the HDPE/modified vermiculite composite is significantly improved,and the O 2 permeation coefficient is 6.9×10^(-15)cm^(3)·cm/(cm^(2)·s·Pa),when the modified vermiculite is 1%.

关 键 词：高密度聚乙烯 膨胀蛭石 改性 气体阻隔 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]