稀释剂对环氧树脂砂浆体系综合性能的影响研究

Study on Influence of Diluent on the Overall Performance of Epoxy Resin

以双酚A型环氧树脂(E51)为基体,改性脂肪胺(593)为固化剂,分别探讨了稀释剂烯丙基缩水甘油醚(AGE)、环氧丙烷苄基醚(692)和乙二醇二缩水甘油醚(669)对环氧树脂体理化及环氧砂浆力学性能的影响。结果表明,AGE和692对E51环氧树脂具有较好的稀释效果,加入量为20%时,在25℃时分别使E51黏度下降至2500 mPa·s和2743 mPa·s。692能显著改善环氧体系的润湿性能,且能够提高环氧体系的固化转化率。力学性能试验表明,稀释剂的加入会恶化环氧树脂砂浆的抗压和抗冲磨性能,但由于692特殊的化学结构,能够使该恶化程度得到改善。

Taking bisphenol A type epoxy resin(E51)as matrix and modified aliphatic amine(593)as curing agent,physicochemical and mechanical properties of epoxy resin added with different diluent,which including allyl glycidyl ether(AGE),epoxy propane benzyl ether(692)and ethylene glycol diglycidyl ether(669)were discussed.The results reveal that AGE and 692 have excellent dilution effect.When the addition is 20%and the temperature is 25℃,the viscosity of E51 could reduce to 2500 mPa·s and 2743 mPa·s.The wettablility and curring rate of E51 are evidently improved by adding 692.The mechanical test shows that the addition of diluent could deteriorate the compressive and wear-resisting properties.But due to the special chemical structure of 692,this deterioration can be ameliorated.