接枝石油树脂提高热熔膜与不锈钢的界面粘接力  

Interfacial Adhesion of Hot-Melt Films to Stainless Steel Improved by Grafted Hydrocarbon Resin

作　　者：邱积武 王鹏[1,2] 邱迪 袁亚 龙世军[1,2] 祁红义[3] 李学锋 Jiwu Qiu;Peng Wang;Di Qiu;Ya Yuan;Shijun Long;Hongyi Qi;Xuefeng L(Hubei Provincial Key Laboratory of Green Light Industrial Materials,Hubei University of Technology,Wuhan 430068,China;School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China;Hubei Chutian Communication Materials Co.,Xiaogan 431602,China)

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,湖北武汉430068 [2]湖北工业大学材料与化学工程学院,湖北武汉430068 [3]湖北楚天通讯材料有限公司,湖北孝感431602

出　　处：《高分子材料科学与工程》2024年第2期124-133,共10页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(52073083);湖北隆中实验室自主创新项目(2022ZZ-16)。

摘　　要：在海缆、冻土等环境下,通讯光电缆要求使用高耐腐蚀的金属/塑料复合带,但工业上还存在不锈钢/塑料复合带界面难粘接的难题。文中通过熔融接枝法成功制备了C_(5)及C_(9)石油树脂接枝马来酸酐(C_(5)-g-MAH,C_(9)-g-MAH),将其引入乙烯-丙烯酸共聚物/线型低密度聚乙烯(EAA/LLDPE)热熔膜并与不锈钢基板热贴合,当C_(5)-g-MAH的用量为30 phr时,不锈钢/塑料复合带的剥离强度最优,在泡水测试前后分别达到了28.6 N/cm与15.2 N/cm。接触角测试表明,C_(5)-g-MAH可有效降低EAA/LLDPE热熔膜与不锈钢基板间的表面张力,促进热熔膜在金属表面的贴合。通过差示扫描量热分析、熔体流变行为分析发现,C_(5)-g-MAH可以与EAA/LLDPE热熔膜有效地相容,同时降低热熔膜的熔融温度、活化分子链段,提高对不锈钢表面浸润性的同时增加粘接位点,使得热熔膜与不锈钢基板的界面粘接力大大提升。Communication optical cables in extreme environments such as submarine cables and tundra require the use of metal/plastic composite tapes that can resistant to extreme environmental applications.However,there are still industrial challenges with stainless steel/plastic composite tape interfaces that are difficult to bond.Herein,C_(5)and C_(9)petroleum resins grafted with maleic anhydride(C_(5)-g-MAH,C_(9)-g-MAH)were successfully prepared by melt grafting and introduced into ethylene-acrylic acid copolymer/linear low density polyethylene(EAA/LLDPE)blended system and hot laminated with stainless steel tape,and when the content of C_(5)-g-MAH is 30 phr,the peel strength of stainless steel plastic composite tapes is the best,reaching 28.6 N/cm and 15.2 N/cm before and after immersion test,respectively.The contact angle test show that C_(5)-g-MAH could effectively reduce the surface tension between the blends and stainless steel,and promote the metal surface adhesion.Differential scanning calorimetry and melt rheological behavior show that C_(5)-g-MAH can be fully miscible with EAA/LLDPE,while lowering the melting temperature of the blend,activating the molecular chain segments,increasing the wettability of stainless steel and increasing the bonding sites,which greatly improve the interfacial adhesion between EAA/LLDPE film and stainless steel.

关 键 词：接枝石油树脂 不锈钢/塑料复合带 熔融接枝 剥离强度 界面粘接 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]