| 丁羟聚氨酯弹性体密封胶性能的研究 |
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| 引用本文： | 胡少坤.丁羟聚氨酯弹性体密封胶性能的研究[J].特种橡胶制品,2010,31(1):19-21. |
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| 作者姓名： | 胡少坤 |
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| 作者单位： | 中国石油兰州石化公司,研究院,兰州,730060 |
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| 摘 要： | 用端羟基聚丁二烯液体橡胶(HTPB,简称丁羟)、N,N—双(2—羟丙基)苯胺(BHA)和甲苯二异氰酸酯(TDI)反应,制备了聚氨酯弹性体密封胶。讨论了固化温度和扩链剂用量对密封胶力学性能的影响,并对密封胶耐水、耐油及耐丙酮性能进行了实验。结果表明,TDI与HTPB摩尔比为1.0且随着扩链剂BHA用量的增加,密封胶(60℃×24h固化)拉伸强度及剪切强度均增加,但拉断伸长率下降;密封胶粘接试样在油、水及丙酮介质中分别浸泡后,随着浸泡天数的增加剪切强度和拉伸强度均有所降低;在油和水中变化很小,在丙酮中变化较大。
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| 关 键 词： | 丁羟液体橡胶 聚氨酯 密封胶 |
Study on the Properties of Polyurethane Sealant based on Hydroxyl-terminated Butadiene Copolymer |
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| HU Shao-kun.Study on the Properties of Polyurethane Sealant based on Hydroxyl-terminated Butadiene Copolymer[J].Special Purpose Rubber Products,2010,31(1):19-21. |
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| Authors: | HU Shao-kun |
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| Affiliation: | Research Institute of Lanzhou Petrochemical Company;Lanzhou 730060;China |
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| Abstract: | The polyurethane sealant was prepared through the reaction of hydroxyl-terminated butadiene copolymer(HTPB),bis-hydroxypropyl phenyl aniline (BHA)and toluene diisocyanate(TDI).The effects of the solidifying temperature and the amount of the chain extender BHA on the mechanical properties of the sealant were discussed,and the water resistance,oil resistance and acetone resistance of the sealant were made an experiment on.The results showed that the tensile strength and shear strength of the sealant solidifie... |
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| Keywords: | hydroxyl-terminated butadiene copolymer polyurethane sealant |
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