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用硅烷偶联剂KH550对聚乙烯表面进行预处理后制备环氧涂层,并与其他常规处理方法(砂纸打磨、喷砂、火焰极化)处理过的PE表面与环氧涂层的粘接性能进行比较。结果表明:经过KH550处理后的PE粘结强度比打磨、喷砂、火焰极化处理分别提高了80%、66%和43%;KH550质量分数在5%～10%,水解时间为48h的粘结效果最佳;经过60℃热水浸泡20d后,用硅烷偶联剂KH550处理过的聚乙烯与环氧的粘结强度仍然保持在5MPa,且破坏状态为环氧内聚,耐水性优于传统的处理方式。
Epoxy coating was prepared by pretreatment of polyethylene surface with silane coupling agent KH550 and adhered to epoxy coating by other conventional treatment methods (sand paper, sandblasting, flame polarization) Performance comparison. The results showed that the bonding strength of PE treated with KH550 was 80%, 66% and 43% higher than that of polished, sandblasted and flame-treated ones, respectively. The viscosity of KH550 with 5% ~ 10% Results showed that the bonding strength of the polyethylene treated with silane coupling agent KH550 remained at 5MPa after epoxy resin was soaked in hot water at 60 ℃ for 20d, The traditional way of handling.