碳纤维复合材料结构件自然老化试验研究
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摘要
在自然环境条件下,从表观、力学性能以及内部结构对碳纤维复合材料结构件(CFRP)在海南省万宁市、黑龙江省漠河县以及山东省济南市3个储藏地进行了12a的老化性能研究,利用扫描电子显微镜、CT探测仪以及电子万能试验机等分析研究了结构件的微观形貌、内部结构变化以及结构件承载性能。结果表明,该结构件经过12a的自然老化后,表面光滑,没有裸露纤维,并且没有降解老化现象,内部结构和力学性能非常稳定,不受储藏地域及时间的影响,挠度值保持在15.3~18.1mm之间,离散系数只有0.05。
The experiment of natural aging durability of carbon fiber reinforced plastic structures in Wanning city of Hainan province,Mohe county of Heilongjiang province and Jinan city of Shandong province were carried out for 12 years.The microscopic morphology,internal quality and mechanical property were studied by scanning electron microscope,CT detector and electronic universal testing machine.The results showed that after 12 years of natural aging,the surface of structures was as smooth as the one before aging experiment and had no bare fiber.Meanwhile there was no degradation of resin.The internal quality and mechanical properties was stable.The value of deflection was between 15.3~18.1 mm,at the same time the dispersion coefficient was only 0.05,not subject to the effect of geographical areas and storage time for 12 years.
The experiment of natural aging durability of carbon fiber reinforced plastic structures in Wanning city of Hainan province,Mohe county of Heilongjiang province and Jinan city of Shandong province were carried out for 12 years.The microscopic morphology,internal quality and mechanical property were studied by scanning electron microscope,CT detector and electronic universal testing machine.The results showed that after 12 years of natural aging,the surface of structures was as smooth as the one before aging experiment and had no bare fiber.Meanwhile there was no degradation of resin.The internal quality and mechanical properties was stable.The value of deflection was between 15.3~18.1 mm,at the same time the dispersion coefficient was only 0.05,not subject to the effect of geographical areas and storage time for 12 years.
引文
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[2]马婷婷,白树林,罗瑞盈.碳纤维增强环氧树脂复合材料在水中老化后的力学性能与破坏机理[C].宜昌:中国宇航协会,2006.
[3]Tsai T I,Bosze E J,Barjasteh E,et al.Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiberglass hybrid composites[J].Composites Science and Technology,2009,69(3/4):432-437.
[4]李树娟,钟焕荣,李智,等.纤维及其复合材料老化机理研究进展[J].合成材料老化与应用,2013,42(6):54-58.
[5]刘旭,陈跃良,张玎,等.温度-湿度-时间因素对聚合物基复合材料性能影响研究[J].装备环境工程,2011,8(2):20-24.
[6]张代军,李晔,钟翔屿,等.T700/5228碳纤维复合材料自然老化性能研究[C].北京:中国宇航协会,2012.
[7]刘明,孙志华,张晓云,等.复合材料自然环境老化试验方法[C].北京:中国硅酸盐学会,2010.
[8]卢东滨,陈平,白天,等.复合材料薄壁结构老化性能研究[J].玻璃钢/复合材料,2014(6):48-51.
[9]何纯雷,于运花,李小超,等.碳纤维/环氧树脂复合材料加速热氧老化研究[J].玻璃钢/复合材料,2012(2):25-29.
[10]Nakada M,Miyano Y.Accelerated testing for long-term fatigue strength of various FRP laminates for marine use[J].Composites Science and Technology,2009,69(8):805-813.
[11]刘旭,陈跃良,霍武军,等.碳纤维复合材料湿热老化加速关系[J].南京航空航天大学学报,2014,46(3):382-388.
[12]张亚娟,齐暑华.复合材料老化方法研究进展[J].工程塑料应用,2002,30(1):39-41.
[13]王云英,刘杰,孟江燕.纤维增强聚合物基复合材料老化研究进展[J].材料工程,2011(7):85-89.
[14]王晓洁,梁国正,张炜,等.湿热老化对高性能复合材料性能的影响[J].固体火箭技术,2009,29(3):301-304.
[15]黄业青,张康助,王晓洁.T700碳纤维复合材料耐湿热老化研究[J].高科技纤维与应用,2006,31(3):19-21.