^(60)Coγ射线辐照对碳纤维表面及其复合材料层间剪切强度的影响  

EFFECT OF CARBON FIBER SURFACE AND INTERLAMINAR SHEAR STRENGTH OF CARBON FIBER/EPOXY COMPOSITE BY 60 Coγ RAY IRRADIATION TREATMENT

作　　者：田军[1,2] 王齐祖[1,2] 杨生荣[1,2] 薛群基[1,2] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑开放研究实验室 [2]兰州大学材料系

出　　处：《复合材料学报》1998年第4期1-5,共5页Acta Materiae Compositae Sinica

摘　　要：对６０Ｃｏγ射线辐照处理的ＰＡＮ基碳纤维的力学性能、表面形貌及表面结构的变化和其与环氧树脂复合后层间剪切强度进行了初步的研究。６０Ｃｏγ射线在１×１０２～１×１０３Ｇｙ辐照剂量时，使ＰＡＮ基中强碳纤维本身的力学性能显著提高；使碳纤维表面的含氧官能团浓度和石墨化程度得以提高；由此制备的碳纤维环氧复合材料的层间剪切强度τＩＬＳＳ提高了３１％左右。而在辐照剂量≥１×１０４Ｇｙ时，由于辐照损伤及热效应，使碳纤维的力学性能下降，增加了表面的炭化及其撕裂程度，从而减小了碳纤维环氧复合材料的层间剪切强度τＩＬＳＳ。The traditional methods of surface treatment include gaseous, acid, solution, plasma, and electrolytic oxidation. 60 Coγ ray irradation was newly used to increase the surface concentration of oxygen functionalities. The effect of such treatment upon fiber surface mechanical properties, chemistry, reactivity and roughness has been studied. X ray photoelectron spectroscope, electron microscope, Raman shift, and X ray diffraction were used to determine elemental compositional changes in fiber surface caused by irradiation. It was found that irradiation treatment improved the tensile strength, modulus, and fracture strain of carbon fiber, and surface oxygen is found in the distribution during irradiation dose 1×10 2～1×10 3Gy; irradiation process could change surface chemical constituents, leading to the promotion of surface activities. Maximum interlaminar shear strength of carbon fiber(dose 1×103Gy)/epoxy corresponds to an increase of 31%.

关 键 词：碳纤维 表面处理 Γ辐照 层间剪切强度 复合材料 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ342.742[化学工程—化纤工业]