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利用电子束对30wt%玻璃纤维(GF)/尼龙6(PA6)复合材料进行辐射交联改性,研究了敏化剂的用量、辐射剂量等对GF/PA6复合材料的结构、力学性能、吸水性能以及热稳定性的影响,并通过SEM对复合材料的交联结构及燃烧后形成的炭层进行了观察。结果表明:当三烯丙基异氰脲酸酯(TAIC)含量为1wt%、辐照剂量为50kGy时,GF/PA6的拉伸强度、弯曲强度、常温及低温冲击强度分别提高了15.7%、43.2%、18.7%和17.3%;随着辐照剂量的增加,GF/PA6复合材料的交联密度不断增大;GF/PA6复合材料燃烧后会形成致密炭层,可以有效地减缓乃至消除尼龙6燃烧时形成的熔滴。
The structure and mechanical properties of GF / PA6 composites were studied by means of electron beam irradiation and radiation modification of 30wt% GF / PA6 composites. The effects of sensitizer dosage, Properties and thermal stability of the composites. The cross-linked structure of the composites and the carbon layer formed after combustion were observed by SEM. The results showed that the tensile strength, flexural strength, room temperature and low temperature impact strength of GF / PA6 increased 15.7% when TAIC content was 1wt% and irradiation dose was 50kGy, respectively. 43.2%, 18.7% and 17.3%, respectively. With the increase of radiation dose, the cross-linking density of GF / PA6 composites increased continuously. The dense carbon layer formed after combustion of GF / PA6 composites could effectively reduce or even eliminate the nylon 6 formed when burning droplets.