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环氧树脂液体胶粘剂存在不耐高温的问题.以环氧树脂为基料,通过加入聚芳醚腈、碳硼烷以及聚氨酯等三种不同的改性物质,制成三种不同类型的环氧树脂液体胶粘剂,并针对这三种胶粘剂,分析环氧树脂液体胶粘剂耐高温性能.结果表明:通过高温下热重测试,碳硼烷-环氧树脂胶粘剂的表观分解温度和温度指数最高,分别为850.3℃和23.54℃,... 相似文献
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耐高温环氧树脂胶粘剂研究进展 总被引:10,自引:2,他引:8
介绍了近年来耐热环氧树脂胶粘剂的研究概况 ,讨论了影响环氧树脂胶粘剂耐热性的因素 ,并指出了耐热环氧树脂胶粘剂的研究发展方向。 相似文献
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耐高温胶粘剂的研究发展概况 总被引:7,自引:5,他引:7
对国内外耐高温胶粘剂的发展概况作了综述,对不同类型耐高温有机胶粘剂、无机胶粘剂的性能和应用进行了全面的讨论,并指出了耐高温胶粘剂研究发展方向。 相似文献
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复合材料用耐高温胶粘剂 总被引:2,自引:1,他引:2
讨论了耐高温胶粘剂在国内外的研究和应用情况。复合材料用耐高温胶粘剂的研究开始于20世纪50年代后期,目的是满足航空航天的需要。至今已报道过许多种高温胶粘剂,其中一部分已用于工业生产。这类胶粘剂应用广泛,其中有高速飞机的油箱密封、高速飞机和航天飞机的结构粘接。未来一段时间,市场需求将迅速增加。 相似文献
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耐高温环氧树脂胶黏剂具有胶结强度高、综合性能好、使用工艺简便等特点,广泛应用于工业和生活的各个领域。环氧胶黏剂的耐高温性取决于固化物的热变形温度和热氧化稳定性,固化物中交联点间的距离越短,交联密度越大,分子链上的芳环、脂环、杂环等耐热刚性基团越多则热变形温度越高,高温力学性能越大,耐热性越好。可以通过改性环氧树脂,使用多官能度固化剂来提高环氧树脂胶黏剂的耐温性。主要从组成方面介绍影响环氧树脂胶黏剂耐高温性的影响因素,并就目前在制备耐高温环氧树脂方面的研究成果进行了综述。 相似文献
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Recently developed epoxy paste adhesives, reactive hot melts, adhesive film tape and polyurethane adhesives are presented for structural bonding in the automotive industry. Paste adhesives usually require a precure stage to obtain handling strength of the joints and to guarantee wash-out resistance of the adhesive in the paint baths. This step can be omitted with reactive hot melts and adhesive film tape, which are solid before and after their application. In addition they allow an improved working hygiene. Some mechanical properties of the adhesives are shown such as lap shear strength and peel strength as well as lap shear strength as a function of the bondline thickness. Results of the excellent durability of epoxy one-component pastes, reactive hot melts and adhesive film tape are given from cyclic environmental and salt spray tests. 相似文献
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Zuwu Tang Shuai Bian Zewei Lin He Xiao Min Zhang Kai Liu Xiuliang Li Bihui Du Liulian Huang Lihui Chen Yonghao Ni Hui Wu 《大分子材料与工程》2021,306(9):2100232
Numerous traditional adhesives have good adhesion in dry environments. However, non-environmental-friendliness and poor water resistance largely limit their practical applications. To prepare biocompatible adhesives with strong water resistance and adhesion strength, in this paper, catechol-functionalized cellulose-based adhesive polymers are synthesized by grafting N-(3,4-dihydroxyphenethyl)methacrylamide and methyl methacrylate onto cellulose chain through atom transfer radical polymerization (ATRP). The successful synthesis of the catechol-functionalized cellulose-based adhesive polymers is confirmed by FTIR and 1H NMR. The different characteristics of the adhesive polymers, such as thermal stability, swelling ratio, biocompatibility, and adhesion strength are investigated. Strong water resistance on various substrates is realized in underwater environment for the catechol-functionalized cellulose-based adhesive with addition of Fe3+. The adhesion strength and thermal stability are enhanced when the catechol content is increased. The adhesive with catechol content of 25.4% shows the adhesion strength of 0.45 MPa for iron substrate in underwater environment. In addition, the adhesive with addition of Fe3+ exhibits excellent adhesion in dry environment, with maximum adhesion strength of 3.50 MPa for iron substrate. The cell culture test shows that the adhesive polymers have excellent biocompatibility. The biocompatible adhesives with strong water resistance have potential application in electronic, wood, and building fields. 相似文献
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综述了耐高温热固性树脂胶粘剂的发展过程与研究现状,介绍了近年来国内外几种性能优异的热固性树脂胶粘剂,提高其高温性能的一些主要途径和改性方法,并介绍了新型功能填料在树脂中的应用情况,最后对耐高温热固性树脂胶粘剂的总体发展趋势进行了展望。 相似文献
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紫外光固化粘合剂的发展 总被引:8,自引:1,他引:7
紫外光固化粘合剂随着紫外光固化技术的发展获得了快速发展。本文从应用角度评述了紫外光固化粘合剂的组成。诸如:可聚合齐聚体,活性单体,光引发剂等,并主要介绍了两种紫外紫外光固化粘合剂,即层压粘合剂和压敏粘合剂。提出了发展我国上光固化粘合剂的几点建设。 相似文献