共查询到20条相似文献,搜索用时 78 毫秒
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用具有高热变形温度的砜类聚合物制备的增黏剂配制了氟橡胶与金属黏接用环氧树脂胶黏剂,研究了胶黏剂的黏接性能及其影响因素.结果表明,增黏剂的适宜用量为30~50质量份,用于胺类硫化氟橡胶与金属黏接时的平均拉伸剪切强度为8~10 MPa.差示扫描量热法的研究表明,增黏剂不仅促进了胶黏剂与金属的黏接,还参与了氟橡胶的黏合与硫化反应,固化剂双氰胺及其分解产物单氰胺均属于伯胺,易于向树脂内扩散,也易于向橡胶层扩散,不但可与环氧基进行加成反应,而且与氟橡胶在黏接界面处生成配位键,从而改善了与氟橡胶的黏接性能. 相似文献
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讨论了Viton氟橡胶与金属的粘合,阐述了配方设计、粘合剂选择、金属嵌件处理方法、二次硫化、模腔压力等因素对粘合质量的影响。分析了含氧化铅难粘胶料的粘结方法 相似文献
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通过研究炭黑及硫化体系对氟橡胶涂料综合性能的影响,制备出一款用于金属氟橡胶复合密封板的氟橡胶涂料,并介绍了金属氟橡胶复合密封板的制备方法及其在内燃机汽缸垫上的应用情况。 相似文献
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The mechanism of adhesive bonding of rubber to metal using an interlayer of bonding agent (adhesive) is discussed with respect to various physical and chemical events such as adsorption at the metal surface, chemical crosslinking within the adhesive, interdiffusion, and formation of interpenetrating networks at the rubber–adhesive interface. An investigation on the peel strength of a natural rubber (NR)–adhesive–metal joint, made by vulcanization bonding using nitrile–phenolic adhesive containing various concentrations of toluene diisocyanate–nitrosophenol (TDI–NOP) adduct, is presented. A single‐coat adhesive, consisting of a p‐cresol phenol formaldehyde resin, nitrile rubber (NBR), and vulcanizing agents in methyl ethyl ketone solvent, was selected for the study. Considerable improvement in the peel strength was obtained by the incorporation of TDI–NOP adduct into the nitrile–phenolic adhesive. The peel strength increases as the concentration of TDI–NOP adduct in the adhesive composition increases, then levels off with a transition from interfacial failure to cohesive tearing of rubber. The peel strength improvement is believed to be attributed to the interfacial reactions between the bonding agent and natural rubber, when TDI–NOP adduct is incorporated. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2597–2608, 2001 相似文献
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《Journal of Adhesion Science and Technology》2013,27(1):847-852
Epoxidized natural rubber with an epoxide content of 50 mol% was found to be a novel adhesive for bonding aluminium to aluminium. The conditions for obtaining maximum joint strength were optimized by varying the mastication time and moulding conditions such as time, temperature, and pressure. 相似文献
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本文研究了不同种类的粘合剂在100℃至150℃温度下,预固化5分钟至15分钟对于天然橡胶金属复合件的粘合强度的影响。结果表明:预涂在金属表面的粘合剂经过适当的预固化处理后,对于成品取得高强度粘接性能是有帮助的。最佳的预固化温度不宜高于120摄氏度,时间不超过10分钟。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(11):1427-1434
Novel adhesive compounds for bonding natural rubber vulcanizates and NR/BR (natural rubber/polybutadiene) blend vulcanizates were developed. It has been shown that reclaimed latex waste can replace natural rubber in the adhesive, either partially or fully. The adhesives were found to retain their bond strength even after 5 weeks of aging at 30°C. 相似文献
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