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首页> 外文期刊>Materials Science and Engineering >Adhesion strength improvement of epoxy resin reinforced with nanoelastomeric copolymer
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Adhesion strength improvement of epoxy resin reinforced with nanoelastomeric copolymer

机译：纳米弹性体共聚物增强环氧树脂的粘合强度提高

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摘要

Nano-sized copoly(styrene-butylacrylate-ethylenglycoldimethacrylate) (St-BA-EGDMA) particles were added at different contents to improve the toughness of diglycidyl ether of bisphenol A epoxy resin (ER) using piperidine as a curing agent. Transmission electron microscopy (TEM) proved that nanoelastomer was finely dispersed in the epoxy adhesive. To compare the adhesion strength of different adherents utilizing both modified and unmodified epoxy adhesive, the lap shear strength (LSS) test was measured as a function of elastomeric nanoparticles (ENP) amount. Scanning electron microscopy (SEM) and FTIR were used to investigate the interface morphology and chemical composition of adherent and epoxy adhesive. The result indicated that the adhesion strength was increased dramatically by addition of nanoparticles compared with that of pure epoxy adhesive. The highest adhesion strength was obtained with 20 wt% elastomeric nanoparticles. It was found that reinforcement with nanoparticles improved the fracture toughness.
机译：以哌啶为固化剂，以不同的含量加入纳米级共聚（苯乙烯-丙烯酸丁酯-乙基二甲基乙二醇二甲基丙烯酸酯）（St-BA-EGDMA）颗粒，以提高双酚A环氧树脂（ER）的二缩水甘油醚的韧性。透射电子显微镜（TEM）证明纳米弹性体细分散在环氧粘合剂中。为了比较使用改性和未改性环氧粘合剂的不同粘合剂的粘合强度，测量了搭接剪切强度（LSS）测试与弹性体纳米颗粒（ENP）量的关系。用扫描电子显微镜（SEM）和FTIR研究了胶粘剂和环氧胶粘剂的界面形态和化学成分。结果表明，与纯环氧粘合剂相比，纳米颗粒的添加使粘合强度显着提高。用20重量％的弹性体纳米颗粒获得最高的粘合强度。发现用纳米颗粒增强可改善断裂韧性。

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