不同固化剂及稀释剂对环氧树脂基体及碳纤维复合材料性能影响

发布时间：2018-05-17 14:54

本文选题：固化剂 + 稀释剂　；参考：《北京化工大学》2015年硕士论文

【摘要】：碳纤维复合材料具有很多方面的优异性能,它的应用非常广泛,在航空航天、汽车零部件、体育器材上都得到很好的应用,因此,制备好的性能的复合材料变得非常重要。要想得到优异的复合材料,树脂的选择是非常重要的。本实验研究了几种不同固化剂及稀释剂对树脂基体及日本东丽高强度和高模量碳纤维复材的性能影响。实验中首先选用了三种不同结构的胺类固化剂,三种固化剂分别是DDM. DMDC、D-230,三种固化剂的刚性不同,DDM为芳香胺类固化剂,DMDC为脂环类固化剂,D-230为聚醚胺类,是柔性链类的固化剂。实验研究了E44/DDM、 E44/DMDC、 E44/D-230三种体系的树脂浇注体的力学性能。实验表明,三种体系,E44/D-230体系所得的强度和伸长率不是最大,但所测得的模量是最高的。所制得的T700和M40碳纤维复丝的拉伸强度也是最高的。实验进一步在E44/D-230体系中加入了三种不同类型不同配比的稀释剂AGE、 PGE、632,加入稀释剂后体系的拉伸模量都有一定程度的提高,并且随着稀释剂含量的增加,树脂基体呈现模量先升高后降低的趋势,E44/D-230/AGE体系,在AGE含量为4%时树脂基体的模量达到最大,E44/D-230/PGE体系,在PGE含量为6%时树脂基体的模量达到最大,E44/D-230/632体系,在632含量为6%时树脂基体的模量达到最大,树脂基体模量达到最大时,T700和M40碳纤维复丝的拉伸强度也最大。实验也进一步研究了不同体系的界面粘结强度,三种不同固化体系,D-230/E44体系的界面粘结强度比较高,加入稀释剂的体系,基体对碳纤维的浸润性变好,粘结强度也有提高。
[Abstract]:Carbon fiber composites (CFRP) have many excellent properties. They are widely used in aerospace, automobile parts and sports equipment. Therefore, it is very important to prepare the composites with good properties. In order to obtain excellent composite materials, the choice of resin is very important. The effects of different curing agents and diluents on the properties of resin matrix and high strength and high modulus carbon fiber composites of Toray Japan were studied. In the experiment, three kinds of amine curing agents with different structures were selected, and the three curing agents were DDM respectively. The rigidity of the three curing agents is different. DDM is an aromatic amine curing agent. DMDC is an aliphatic ring curing agent and D-230 is a polyether amine. It is a kind of curing agent of flexible chain. The mechanical properties of resin castable of E44 / DDM, E44 / DMDCand E44/D-230 were studied experimentally. The experimental results show that the strength and elongation of E44 / D-230 system are not the largest, but the modulus measured is the highest. The tensile strength of T 700 and M 40 carbon fiber is also the highest. In the experiment, three kinds of diluents ages and PGE632 were added to the E44/D-230 system. The tensile modulus of the system increased to a certain extent after the addition of diluent, and with the increase of diluent content, The resin matrix showed a trend of increasing modulus first and then decreasing it. When the content of AGE was 4, the modulus of resin matrix reached the maximum E44 / D-230 / PGE system. When the content of PGE was 6, the modulus of resin matrix reached the maximum value of E44D-230 / 632 system. When the content of 632 is 632, the modulus of the resin matrix reaches the maximum, and the tensile strength of the T700 and M40 carbon fiber composite fibers reaches the maximum when the modulus of the resin matrix reaches the maximum. The interfacial bond strength of different systems was also studied. The interfacial bond strength of three different curing systems was higher than that of D-230 / E44 system. When diluent was added, the wettability of carbon fiber was improved and the bond strength was also improved.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ327.3;TB332

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