LDPE/PP复合消光膜光学及力学性能研究  

Optical and Mechanical Properties of LDPE/PP Composite Extinction Film

作　　者：麻玉龙 钟安澜 王聚恒 张怡[1,2,3] 曾舒 黄晓枭[1,2,3] 杨康 MA Yu-long;ZHONG An-lan;WANG Ju-heng;ZHANG Yi;ZENG Shu;HUANG Xiao-xiao;YANG Kang(Guizhou Institute of Metallurgy and Chemical Engineering,Guiyang 550002,China;Guizhou Nanomaterials Engineering Center,Guiyang 550002,China;Guizhou Juxing Plastic Industry Co.,Ltd.,Guiyang 550014,China)

机构地区：[1]贵州省冶金化工研究所,贵州贵阳550002 [2]贵州省纳米材料工程中心,贵州贵阳550002 [3]贵州聚兴塑业有限公司,贵州贵阳550014

出　　处：《塑料工业》2021年第5期153-155,160,共4页China Plastics Industry

基　　金：黔科院字[2018]14号;黔科院J字[2019]24号;黔科合支撑[2020]4Y063;黔科合基础[2019]1448号和[2018]1417号。

摘　　要：通过三层流延机制备低密度聚乙烯(LDPE)/聚丙烯(PP)复合消光膜,结合扫描电子显微镜(SEM)、偏光显微镜(POM)等测试技术,研究PP添加量对复合膜材料光学及力学性能的影响规律。结果表明,当PP添加量为15%时,膜的雾度及透光率分别为96.3%、94.8%,拉伸强度为27.51 MPa,较之未添加PP增加了16.2%,断裂伸长率为1 958%,杨氏弹性模量为81.08 MPa,相比于未添加PP各增加了13.2%、23.4%。另外,PP同时完善其晶体结构,诱导α晶型转变为β晶型,提高复合膜材料的力学性能。Low density polyethylene(LDPE )/polypropylene(PP)composite extinction film was prepared by three-layer tape casting,and the influence of PP contents on the optical and mechanical properties of the composite film was studied by scanning electron micriscope(SEM)and polarizing microscope(POM).The results show when the content of PP is 15%,the haze and transmittance of the film are 96.3% and 94.8%,respectively.The tensile strength is 27.51 MPa,which increases 16.2%.The elongation at break is 1 958% ,and the young s modulus of elasticity is 81.08 MPa,which increases 13.2% and 23.4%,respectively.In addition,PP improves the crystal structure,induces the transformation from α crystal to β crystal,and improves the mechanical properties of the composite film.

关 键 词：消光膜 光学性能 力学性能 Β晶型 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]