李峻青,徐用军,张怀志
LI Jun-qing1, XU Yong-jun2, ZHANG Huai-zhi3(1. College of Material & Chemical Engineering

• 1:哈尔滨工程大学材料科学与化学工程学院
• 2:哈尔滨工业大学工业技术研究院
• 3:大庆石化公司研究院 黑龙江哈尔滨150001
• 4:黑龙江哈尔滨150001

摘要(Abstract)：

以60Coγ-射线为辐照源对碳纤维(CF)表面进行处理,利用扫描电子显微镜(SEM)观察经辐照处理后的碳纤维单丝表面及其与环氧树脂制备的复合材料试样的层间剪切断口;通过层间剪切强度比较了吸收剂量对其复合材料层间剪切强度(ILSS)的影响,并根据GB/T3362—1982标准比较了辐照前后碳纤维复丝拉伸强度的变化。结果表明:辐照处理后的碳纤维增强环氧树脂复合材料的界面明显得到改善,在一定的吸收剂量范围内能够有效地提高复合材料的ILSS,但是过大的辐照剂量和接枝率不利于复合材料的界面改性;当辐照剂量小于250kGy时,碳纤维的复丝拉伸强度有所提高。
In this paper, γ-ray irradiate graft technology was used for modifying the surface of carbon fiber (CF). The fracture of carbon fiber reinforced composite (CFRC) was characterized by SEM, as well as the surface of CF single filament. The effect on the interlaminar shear strength of CFRC was compared with different absorbed dose. The tensile strength of bundle CF was characterized according to the standard of GB/T 3362-1982. The results showed that interface of CFRC was improved obviously after irradiation treated; the technique of irradiate grafting could enhance the interlaminar shear strength of CFRC in a suitable range of absorbed dose, but excessively absorbed dose and grafting rate would bring disadvantage on interface performance, the tensile strength of bundle CF was increased when absorbed dose less than 250 kGy.

关键词(KeyWords)： 辐照;碳纤维;复合材料;界面;拉伸强度
irradiation, carbon fiber, composite, interface, tensile strength

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李峻青,徐用军,张怀志
LI Jun-qing1, XU Yong-jun2, ZHANG Huai-zhi3(1. College of Material & Chemical Engineering

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