【作者】 彭龙贵；

【导师】 何廷树；

【作者基本信息】 西安建筑科技大学 ， 材料学， 2004， 硕士

【摘要】 本文开发了一种低粘度，能在低温条件下快速固化的环氧树脂建筑结构胶粘剂JD，该胶粘剂可满足建筑行业冬季施工的要求。 对硫脲改性多胺(1，6—己二胺)进行了系统研究，分析了合成反应时间，合成单体配料比和合成反应温度对固化剂性能的影响，最终筛选出优质改性固化剂HD。探讨了改性多胺及其它助剂与环氧树脂之间发生化学反应的反应机理。研究了影响环氧树脂胶粘剂体系凝胶时间、剪切强度、拉伸强度、锚固力等重要性能的因素。试验结果表明：改性多胺固化剂HD能降低环氧树脂胶粘剂体系的固化温度，减少其固化时间，有效地提高胶粘剂体系在低温下的固化能力；用HD固化剂配制的胶粘剂能在-5℃的低温环境下48h内固化环氧树脂，体系具有合适的适用期，固化产物具有良好的综合性能。 自制的主粘剂HJ是两种环氧树脂的复合体系，它具有低的粘度，可供在低温环境下配置胶粘剂时使用。通过稀释剂、促进剂、偶联剂、填料等助剂对环氧树脂胶粘剂体系进行优化改性研究，最终获得了具有良好的施工性能、力学性能和粘结性能的低温固化环氧树脂结构胶粘剂。胶粘剂JD在0℃下具有合适的粘度(48Pa·s)，适中的凝胶时间(79min)，经48h固化(即0℃×48h)后，固化物具有高的剪切强度(21MPa)、拉伸强度(41MPa)、压缩强度(99MPa)、锚固力(65kN)和软化温度(89℃)。而且随着固化温度的提高，胶粘剂体系的固化速度和固化程度还会进一步增加，力学性能、粘结性及耐热性能也会进一步提高。更多还原

【Abstract】 A type of epoxy resin adhesive for architecture structure abbreviated JD was developed, which has low viscosity and can fast harden under the low temperature. This adhesive can meet the needs of construction in the winter.Based on the systematic research on the thiourea modified aliphatic amines, a type of effective modified hardener abbreviated HD was gotten by experimentally researching the several synthesizing factors such as synthesizing time, Moore ratio of synthesizing monomer and synthesizing temperature .etc that they influence the performances of the hardener. The chemical reaction mechanisms between epoxy resin and modified aliphatic amines or other auxiliary agents and the factors affecting some important performances of epoxy resin adhesive systems such as gelatin-time, shear strength, tensile strength compressive strength and softening temperature .etc were also investigated. The results indicate that the modified aliphatic amines hardener HD can lower the hardening temperature, reduce the hardening time of epoxy resin adhesive systems, and effectively increase the hardening performances of adhesive systems under the low temperature. The epoxy resin adhesive with the modified hardener HD can harden under -5 C within 48h and has an appropriate shelf-life, and the hardening product of the adhesive has good comprehensive performances.The self-made main-binder abbreviated HJ is a composite of two epoxy resins, which has low viscosity, and can be used to make adhesive under different use temperatures. By optimizing the auxiliary agents such as diluter, filling, accelerator and silane coupling agents, the epoxy adhesive JD was finally obtained, which has good performances of processing, mechanics and adhesion. Under zero temperature this adhesive can obtain the viscosity of 48Pa-s and the gelatin-time of 79min; after hardening 48h (0 C 48h) hardening product can obtain the shear strength of 21MPa, the tensilestrength of 41MPa, the compressive strength of 99MPa, the softening temperature of 89 C and the anchoring force of 65kN. As the hardening temperature increases, the speed hardening and degree of the adhesive JD increase, the mechanical and adhesion performances of the adhesive systems can be further improved.更多还原