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用环氧树脂E-44和自制氨基硅油溶液聚合成改性环氧树脂,分析了环氧树脂与氨基硅油的配比、氨基硅油的氨值和特性粘度对改性环氧树脂的影响,并研究了固化剂4,4′-二氨基二苯甲烷(MDA)的固化条件对胶粘剂力学性能和粘接性能的影响。结果表明,氨基硅油用量为20%时所制备的改性环氧树脂的韧性最好;采用氨值为2.3 mmol·g~(-1),特性粘度为1.18 mL·g~(-1)的氨基硅油改性环氧树脂性能最好;制备胶粘剂时,以先在25℃固化3 h,后在120℃固化2 h为最佳工艺。
The epoxy resin was synthesized by epoxy resin E-44 and self-made amino silicone oil, and the effects of epoxy resin and amino silicone oil ratio, ammonia value of amino silicone oil and intrinsic viscosity on the modified epoxy resin were analyzed. The effects of curing conditions of 4,4’-diaminodiphenylmethane (MDA) on the mechanical properties and adhesive properties of the adhesive were studied. The results show that the modified epoxy resin prepared by using 20% aminosilicone oil has the best toughness. With the ammonia value of 2.3 mmol · g -1 and the intrinsic viscosity of 1.18 mL · g -1 Amino silicone modified epoxy resin performance best; preparation of adhesive, the first curing at 25 ℃ 3 h, then cured at 120 ℃ for 2 h is the best process.