| 热熔胶用聚氨酯弹性体的合成 |
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| 引用本文： | 谢富春,郭福全,范吉昌.热熔胶用聚氨酯弹性体的合成[J].弹性体,2013,23(2):40-42,60. |
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| 作者姓名： | 谢富春 郭福全 范吉昌 |
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| 作者单位： | 洛阳理工学院材料科学与工程系,河南洛阳,471023 |
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| 基金项目： | 河南省教育厅科技攻关项目 |
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| 摘 要： | 以4，4’-二苯基甲烷二异氰酸酯（MDI）、聚乙二醇（PEG）和I，4-丁二醇（BIDO）为原料合成聚氨酯弹性体，采用流延法制备了热熔胶膜。考察了预聚反应的温度、时间对聚氨酯弹性体性能的影响，并对预聚体中NCO含量、异氰酸酯指数（R）、聚醚多元醇的种类以及相对分子质量等进行了探讨。确定了最佳反应条件：反应温度为（80±5）℃；反应时间为1．5～2．0h。预聚体中NCO质量分数控制在9％～10％，R值取1．02，选用相对分子质量为1500的PEG制备的热熔胶用聚氨酯弹性体性能优异。
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| 关 键 词： | 聚醚 聚氨酯弹性体 热熔胶 合成 |
Synthesis of hot-melt adhesive by polyurethane elastomers |
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| Xie Fuchun
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Guo Fuquan
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Fan Jichang.Synthesis of hot-melt adhesive by polyurethane elastomers[J].China Elastomerics,2013,23(2):40-42,60. |
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| Authors: | Xie Fuchun Guo Fuquan Fan Jichang |
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| Affiliation: | (Department of Materials Science & Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China) |
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| Abstract: | The hot-melt adhesive type polyurethane elastomers were synthesized by the method of prepolymer based on polyethylene glycol （PEG） .4,4-diphenylmethane diisocyanate （MDI） and 1,4- dihydroxybutane（BDO） ; the hot-melt adhesive film was prepared by casting process. Effect of prepoly- merization time and temperature was examined; the appropriate reaction condition of prepolymer was （80-4-5） ℃ and 1.5~2 h. Effects of the percentage of--NCO in prepolymer, the moler ratio of--NCO and OH, the type of polyol molecular, different molecular weight of polyethylene glycol were explored; the time of post cure was 4h with the temperature 130 ℃. |
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| Keywords: | polyether polyurethane elastomer hot-melt adhesive synthesis |
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