| 湿热老化对玻璃纤维/环氧树脂复合材料性能的影响 |
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| 引用本文： | 高坤,史汉桥,孙宝岗,王振河,杨智勇,邢亚娟,杨毅.湿热老化对玻璃纤维/环氧树脂复合材料性能的影响[J].复合材料学报,2016,33(6):1147-1152. |
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| 作者姓名： | 高坤 史汉桥 孙宝岗 王振河 杨智勇 邢亚娟 杨毅 |
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| 作者单位： | 航天材料及工艺研究所, 北京 100076 |
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| 摘 要： | 为研究玻璃纤维(GF)/环氧树脂复合材料湿热老化机制, 首先, 利用称重法、动态热机械分析仪(DMA)、SEM和矢量网络介电分析仪研究了湿热老化对GF/环氧树脂608(EP608)复合材料性能的影响;然后, 分析了复合材料的吸湿率、力学性能、介电性能与老化时间的关系, 并对其老化机制进行了探讨。结果表明:随老化时间延长, GF/EP608复合材料的力学性能和介电性能均有不同程度的下降;湿热老化对GF/EP608复合材料吸湿率的影响符合Fickian扩散定律;树脂基体的塑化、水解和基体-纤维界面的破坏是造成GF/EP608复合材料力学性能和介电性能下降的主要因素。所得结论可为GF增强环氧树脂基复合材料的应用提供科学依据。
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| 关 键 词： | 复合材料 湿热老化 力学性能 介电性能 老化机制 |
| 收稿时间： | 2015-10-27 |
Effects of hydro-thermal aging on properties of glass fiber/epoxy composites |
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| GAO Kun,SHI Hanqiao,SUN Baogang,WANG Zhenhe,YANG Zhiyong,XING Yajuan,YANG Yi.Effects of hydro-thermal aging on properties of glass fiber/epoxy composites[J].Acta Materiae Compositae Sinica,2016,33(6):1147-1152. |
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| Authors: | GAO Kun SHI Hanqiao SUN Baogang WANG Zhenhe YANG Zhiyong XING Yajuan YANG Yi |
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| Affiliation: | Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
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| Abstract: | In order to study the hydro-thermal aging mechanism of glass fiber (GF)/epoxy composites,the effects of hydro-thermal aging on the properties of GF/epoxy 608 (EP608)composites were investigated by gravimetric method,dynamic mechanical analyzer (DMA),SEM and vector network dielectric analyzer firstly.Then,the rela-tionships between moisture absorption ratio,mechanical properties,dielectric properties and aging time of the com-posites were analyzed,and the aging mechanism was discussed.The results show that with aging time increasing, both of the mechanical properties and dielectric properties for GF/EP608 composites reduce in different degrees.The effect of hydro-thermal aging on the moisture absorption ratio of GF/EP608 composites accords with Fickian diffu-sion law.The plasticization,hydrolyzation of resin matrix and the failure of fiber-matrix interface are the main rea-sons for the decrease of the mechanical properties and dielectric properties for GF/EP608 composites.The conclu-sions obtained can provide scientific references for the application of GF reinforced epoxy matrix composites. |
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| Keywords: | composites hydro-thermal aging mechanical properties dielectric properties aging mechanism |
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