辐照剂量及后固化温度对低能电子束分层固化复合材料层间性能的影响

发布时间：2019-02-22 15:54

【摘要】：采用一定剂量的低能电子束辐照预浸带并分层铺放,在不同温度下对预成型层合板进行热后固化制备复合材料,研究了辐照剂量及后固化温度对复合材料层间性能的影响。结果表明:上表面辐照剂量对复合材料层间剪切强度(ILSS)的影响比后固化温度的影响大,下表面辐照剂量的影响最小;当总辐照剂量(上下表面剂量之和)为100~130kGy时,复合材料层间剪切强度较高(66.3 MPa);辐照总剂量大于130kGy后,因黏接层平均固化度的增大导致复合材料层间黏接效果变差,层间剪切强度明显下降;后固化温度对经过低能电子束辐照后复合材料的固化速率影响较大,在满足预浸带上下表面完全固化的基础上,较低的固化温度能够改善复合材料的层间黏接性能并使其获得较高的层间剪切强度。
[Abstract]:In this paper, the prepreg band of a certain dose of low energy electron beam was irradiated and layered to prepare the composite material. The effects of irradiation dose and post-curing temperature on the interlaminar properties of the composite were studied. The results show that the effect of irradiation dose on the interlaminar shear strength (ILSS) of the composites is greater than that on the post-curing temperature, and the effect of irradiation dose on the lower surface is the least. The interlaminar shear strength of composites was higher (66.3 MPa);) when the total irradiation dose (the sum of upper and lower surface doses) was 100~130kGy. When the total irradiation dose is greater than 130kGy, the interlaminar adhesion becomes worse and the interlaminar shear strength decreases obviously because of the increase of the average curing degree of the bonding layer. The post-curing temperature has a great influence on the curing rate of the composite after low energy electron beam irradiation, and on the basis of satisfying the complete curing of the upper and lower surfaces of the prepreg band, Lower curing temperature can improve the interlaminar adhesion of the composites and make them obtain higher interlaminar shear strength.
【作者单位】：西安交通大学机械制造系统国家重点实验室;装甲兵技术学院机械工程系;
【基金】：国家自然科学基金资助项目(51275393)
【分类号】：TB33

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