Grafting of glycidyl methylacrylate onto chlorinated polypropylene and its bonding to aluminum flake
Grafting of glycidyl methylacrylate onto chlorinated polypropylene and its bonding to aluminum flake
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DOI：
10.1002/app.25819
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发表时间：
2007-05
影响因子：
3
通讯作者：
Hanwen Xiao;Fengyuan Yu;Yingfeng Yu;Shiqiang Huang
中科院分区：
文献类型：
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作者：
Hanwen Xiao;Fengyuan Yu;Yingfeng Yu;Shiqiang Huang
以苯乙烯（St）为共聚单体，过氧化苯甲酰（BPO）为引发剂，在熔融状态下将甲基丙烯酸缩水甘油酯（GMA）接枝到氯化聚丙烯（CPP）上。差示扫描量热法（DSC）结果表明，接枝CPP的热力学曲线与纯CPP不同，在100°C处出现了一个新的宽吸热峰，这可能是由于接枝CPP中残留的GMA和St的共聚物的玻璃化转变温度（Tg）升高所致。透射电镜（TEM）结果表明，接枝CPP具有两相结构。由于接枝CPP是作为热熔胶使用的，因此研究了引发剂浓度、单体浓度、反应温度对剥离强度的影响。实验结果表明，采用GMA和St两种单体均能获得较高的接枝率，随着单体浓度的增加，剥离强度开始迅速增加。© 2007 Wiley Periodicals，Inc.应用聚合物科学杂志104：2515-2521，2007
Glycidyl methacrylate (GMA) was grafted onto chlorinated polypropylene (CPP) in the molten state using benzoyl peroxide (BPO) in the presence of styrene (St) as a comonomer. The differential scanning calorimetry (DSC) results indicated that the thermodynamic curve of unpurified grafted CPP was different from the purified, and showed a new broad endothermic peak at 100°C, which may be attributed to the glass transition temperature (Tg) of remained copolymer of GMA and St. Furthermore, transmission electron microscope (TEM) showed that there were two-phase structures in the grafted CPP. Because the grafted CPP was to be used as a hot melt adhesive, so the influence of initiator concentration, monomer concentration, and reaction temperature on peel strength was investigated. The experiment results showed that a higher degree of grafting was obtained by using two kinds of monomers, such as GMA and St. Increasing the monomer concentration led to an initial rapid increase in the peel strength. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2515–2521, 2007