AA-HEMA共聚物的耐水性及其对LDPE薄膜防雾滴性能的影响  

Water resistance of AA-HEMA copolymer and influences of its coating on antifogging properties of LDPE films

作　　者：李青青[1] 蔡梦军[1] 陈雪梅[1] 

机构地区：[1]华东理工大学化工学院,超细粉末国家工程研究中心,上海市200237

出　　处：《合成树脂及塑料》2014年第1期59-63,共5页China Synthetic Resin and Plastics

摘　　要：以丙烯酸(AA)和甲基丙烯酸羟乙酯(HEMA)为原料,过硫酸铵为引发剂,N,N-亚甲基双丙烯酰胺为交联剂,采用水溶液自由基聚合法合成了具有一定耐水性能的AA-HEMA共聚物。研究了AA中和度、引发剂用量、交联剂用量与AA-HEMA共聚物耐水性能的关系,考察了将其用作低密度聚乙烯(LDPE)薄膜防雾滴剂时对薄膜防雾滴性能的影响。结果表明:在优化条件下,AA-HEMA共聚物的耐水性能优异(固化度72.5%);防雾滴LDPE薄膜的初滴时间和十滴时间分别为374,95 s,高温(60℃)持效期大于170 h,是一种性能优良的LDPE薄膜防雾滴剂。Acrylic acid（AA）-2-hydroxyethyl methacrylate（HEMA） copolymer having certain water re-sistance was synthesized with AA and HEMA as raw materials, ammonium persulphate as initiator, and N,N-methylene bisacrylamide as cross-linking agent via free-radical polymerization in aqueous solution. The effects of neutra-lization degree of AA, initiator and cross-linking agent dosages on water resistance of AA-HEMA co-polymer were studied. The influences of AA-HEMA used as antifogging agent of low density polyethylene（LDPE） film on antifogging properties of films were investigated. The results indicate that under the optimizing conditions, the AA-HEMA copolymer has excellent water resistance（the curing degree is 72.5%）.The first-drop time and ten-drop time of LDPE antifogging film are 374, 95 s respectively, and the duration at high temperature（60 ℃） is more than 170 h. Therefore, the AA-HEMA copolymer is an excellent antifogging agent for LDPE films.

关 键 词：丙烯酸 甲基丙烯酸羟乙酯 共聚物 耐水性 防雾滴性能 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]