摘要
通过添加EVA环氧树脂和发烟二氧化硅的方法制备了不同类型的环氧树脂胶粘剂试样,研究了EVA环氧树脂添加量和发烟二氧化硅,对损伤与修复处理后环氧树脂胶粘剂试样弯曲强度的影响。结果表明,在相同EVA环氧树脂添加量条件下,损伤处理后胶粘剂的剩余弯曲强度明显低于损伤处理前胶粘剂试样,随着EVA环氧树脂添加量增加,损伤处理前胶粘剂试样的剩余弯曲强度逐渐减小,而损伤处理后胶粘剂试样的剩余弯曲强度逐渐提高;在相同EVA环氧树脂添加量条件下,修复处理后胶粘剂的剩余弯曲强度高于修复处理前胶粘剂试样,随着EVA环氧树脂添加量增加,修复处理前胶粘剂试样的剩余弯曲强度逐渐增大,而损伤处理后胶粘剂试样的剩余弯曲强度也呈现逐渐升高特征;损伤和修复处理后,添加发烟二氧化硅的胶粘剂试样的剩余弯曲强度明显减小,修复处理不会对损伤处理后胶粘剂试样的剩余弯曲强度造成明显影响。
The effects of EVA epoxy resin and fumed silica on the flexural strength of epoxy resin adhesive samples after damage and repair treatment were studied.The results show that the residual bending strength of the adhesive after damage treatment was significantly lower than that of the adhesive sample before damage treatment at the same EVA epoxy resin addition amount.With the increase of EVA epoxy resin addition amount,the residual bending strength of the adhesive sample before damage treatment decreased gradually,while the residual bending strength of the adhesive sample after damage treatment increased gradually.Under the same EVA epoxy resin addition amount,the residual bending strength of the adhesive after repair treatment was higher than that of the adhesive sample before repair treatment.With the increase of EVA epoxy resin addition amount,the residual bending strength of the adhesive sample before repair treatment gradually increased,and the residual bending strength of the adhesive sample after damage treatment also showed a gradually increasing feature.After the damage and repair treatment,the residual bending strength of the adhesive sample added with fumed silica decreased significantly,but the repair treatment did not have a significant impact on the residual bending strength of the adhesive sample after the damage treatment.
作者
黄文杰
吴海宁
杜端
可红
张超
HUANG Wenjie;WU Haining;DU Duan;KE Hong;ZHANG Chao(Hubei Huazhong Electric Power Technology Development Co.,Ltd.,Wuhan 430050,Hubei China)
出处
《粘接》
CAS
2022年第12期22-25,共4页
Adhesion
