论文部分内容阅读
通过单因素实验和正交实验,以胶粘剂对基材(丁苯橡胶-丁苯橡胶)的剪切强度为依据,确定了用氨基硅油和环氧树脂改性聚氨酯胶粘剂时,制备聚氨酯预聚体的单体甲苯二异氰酸酯(TDI)和聚醚二元醇(DL2000)的恰当配比,氨基硅油和环氧树脂的恰当添加量,以及恰当的反应时间和反应温度。通过热分析技术(TG-DSC),对比分析了未改性胶粘剂和二元改性胶粘剂的热性能;最后对比检测了未改性胶粘剂和二元改性胶粘剂对不同基材的剪切强度以及自身的各种性能。实验结果表明:二元改性聚氨酯胶粘剂对各种基材具有较高的粘接强度,其自身具有良好的附着力、较低的吸水率、较好的热稳定性和耐酸碱性能。
Through the single factor experiment and orthogonal experiment, based on the shear strength of the adhesive to the substrate (SBR-SBR), it was confirmed that when the polyurethane adhesive is modified with the aminosilicone oil and the epoxy resin, the polyurethane prepolymer The appropriate ratio of TDI to polyether glycol (DL2000), the appropriate amount of aminosilicone oil and epoxy resin, and the appropriate reaction time and reaction temperature. The thermal properties of unmodified and binary modified adhesives were compared by TG-DSC. The shear strength of unmodified adhesives and binary modified adhesives on different substrates were compared with each other A variety of their own performance. The experimental results show that the binary modified polyurethane adhesive has high adhesive strength to various substrates and has good adhesion, low water absorption, good thermal stability and acid and alkali resistance.