双向拉伸聚丙烯薄膜专用料的性能分析及工艺优化  

Properties Analysis and Process Optimization of Bidirectional Stretching Polypropylene Film Specialty Resin

作　　者：刘义 竺栋荣 张长军 亢萍[2] 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060 [2]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《广州化工》2012年第22期58-60,共3页GuangZhou Chemical Industry

基　　金：中国石油和中国基金委联合基金(No:2011B-2702)

摘　　要：分析了国内外双向拉伸聚丙烯薄膜(BOPP)专用料的物性及其分子结构,讨论了兰州石化公司生产的BOPP专用料T38F的工艺优化情况。结果表明,BOPP专用料的生产指标最佳控制值为:熔体流动速率2.9～3.1 g/10 min,等规度95.5%～97.0%,灰分质量分数不大0.020%,分子量分布4.0～5.5。优化助催化剂三乙基铝、给电子体、氢气加入量以及第一环管反应器、第二环管反应器聚合分配率等工艺条件,可以显著提高BOPP专用料T38F的性能。Properties and molecular structure of domestic and foreign Bidirectional Stretching Polypropylene Film（BOPP） specialty resin was developed,and process optimization of BOPP special resin T38F produced by Lanzhou Petrochemical Company was discussed.The results showed that the best control value of BOPP specialty resin production index was melt flow rate 2.9～3.1 g/10 min,isotactic index 95.0%～97.0%,little ash mass fraction 0.020%,and molecular weight distribution of 4.0 to 5.5.Feed rate of triethylaluminum cocatalyst,electron donor,hydrogen and distribution rate of first tubular loop reactor,a second tubular loop reactor were optimized in the polymerization,and these significantly improved the performance of BOPP special resin T38F.

关 键 词：BOPP 结构 性能 工艺条件 

分 类 号：TQ32[化学工程—合成树脂塑料工业]