共查询到19条相似文献,搜索用时 140 毫秒
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高性能聚脲喷涂弹性体技术 总被引:5,自引:1,他引:4
宣美福 《化学推进剂与高分子材料》1999,(3):1-4
聚脲喷涂性性能优异、操作方便、应用广泛。简介弹性体喷涂技术发展沿革、聚脲喷意志生体组分及其性能,着重介绍缓慢型和增强型聚脲喷涂弹性体的应用以衣国外研究开发动态。 相似文献
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喷涂聚脲弹性体技术,以其优异的综合性能和先进的施工工艺,引起了国内外材料界和工程界的极大关注.介绍了该技术的发展简史、化学原理、关键技术、材料性能、应用领域等,展望了其应用发展前景. 相似文献
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喷涂聚脲弹性体技术的应用 总被引:32,自引:5,他引:27
介绍了喷涂聚脲弹性体系列材料的生产工艺、施工参数及性能。在贮水池、船舶舱室地板、建筑物屋面及地面的应用表明:该材料性能优良,前景十分广阔。 相似文献
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对非端氨基聚醚的聚脲喷涂弹性体配方进行了研究,考察了聚丙二醇(PPG)软段、硬段含量以及扩链剂对弹性体性能的影响,制备出适用于混凝土桥梁和水处理池的防水防渗层材料,也可用于机械设备内衬。 相似文献
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针对水利水电混凝土工程常处于潮湿状态的特点.介绍了应用于潮湿混凝土基材的喷涂聚脲弹性体涂层的粘接性能,试验结果表明,SK型表面处理剂与潮湿混凝土基材粘接强度能达到5.0MPa.施用表面处理剂后再喷涂聚脲弹性体涂层粘接强度能达到2.5MPa。 相似文献
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概述了喷涂聚脲弹性体(SPUA)技术的发展与性能特点等情况,简述了其在石油天然气工业的应用现状,并结合石油天然气工业的工况环境,着重分析了SPUA技术在石油天然气工业上用作耐磨防腐衬里、韧性抗冲击防护涂层和钻井平台防滑耐磨涂层的发展前景。 相似文献
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The increasing usage of polyurea coatings has attracted the attention of researchers worldwide. Commercial polyurea formulations contain chain extenders as an essential ingredient, which increases the possibility of intermolecular H-bonding by bringing the urea linkages closer. In this work, we establish the effect of increasing chain length of chain extender on the material properties of the polymer. Different types of chain extender were blended with a long chain diamine and subsequently reacted with an MDI-based isocyanate prepolymer through a reactive spray processing technique. Polyurea coatings containing aromatic chain extenders were found to exhibit higher tensile strength as compared to their aliphatic analogues. Increasing the chain length of the aliphatic chain extender led to a reduction in the mechanical strength. A suitable combination of aromatic and aliphatic chain extender of short length was found to force the macromolecule to orient in such a fashion so as to result in optimal H-bonding. This manifested in terms of improved processability, as confirmed by chemorheological investigations. Fourier transform infrared spectroscopy was used to understand the H-bonded internal structure of the polymer. Optimum H-bonding resulted in improved mechanical properties of the spray-coated polyurea. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48573. 相似文献
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