高透明薄膜料LD104的性能与应用  

Properties and Application of High Clarity Film LD104

作　　者：王艳芳[1] 

机构地区：[1]中国石化北京燕化石油化工股份有限公司树脂应用研究所,北京102500

出　　处：《石化技术》2006年第2期1-3,6,共4页Petrochemical Industry Technology

摘　　要：高透明薄膜料LD104较高的结晶温度及结晶速率,略低的结晶热焓,较细密均匀的结晶,使其具有优异光学性能,较低的甲基支化度,使得其密度比通用牌号的低密度聚乙烯略高。薄膜的性能除受树脂本身结构决定以外,还受吹膜工艺的影响,温度提高,有利于提高薄膜透明性;但加工温度过高,对薄膜的开口性能不利。用 LD104吹制薄膜的最佳工艺条件为温度190℃、吹胀比2．0左右,该薄膜具有较高的强度和挺度。The higher crystallization temperature and velocity,lower crystallization enthalpy and more fine crystalline of high clarity film LD104 are one of the main reasons of having outstanding optical property. Due to the smaller short branch ratio, the density of LD104 is higher than general LDPE, so the LD104 film has good strength and stiffness. Film-blowing process affects properties of a film except the resin itself. The higher temperature contributes to good transparency, but goes against anti-blocking. The suitable film-blowing conditions of LD104 are 190 ℃ and blow-up rate about 2.0.

关 键 词：透明薄膜 低密度聚乙烯 结晶 吹膜工艺 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]