Effect of UV Irradiation on Glass Fiber Reinforced Unsaturated Polyester Resin Composite under Warm-Wet Environment
摘 要
对玻璃纤维增强不饱和聚酯树脂基复合材料在温湿环境下进行了人工紫外照射老化试验,研究了紫外老化对复合材料的质量损失率、巴氏硬度、拉伸与弯曲力学性能及其失效形态等的影响,并对其微观形貌和结构进行了分析。结果表明:随着紫外老化时间的延长,复合材料的质量损失率不断增加;照射面巴氏硬度低于未照射面的,巴氏硬度保留率随紫外老化时间的延长呈先增大后减小的趋势;随着紫外老化时间的延长,复合材料的拉伸和弯曲强度均呈先增大后缓慢降低的趋势;老化后复合材料中的孔隙率和韧性白色条带数量增加,呈现出明显的层片状海浪花样;复合材料中存在化学键断裂的现象,紫外照射使其化学结构发生了变化。
Abstract
Artificial UV irradiation aging test under warm-wet environment was conducted for glass fiber reinforced unsaturated polyester resin composite. The effect of UV aging on mass loss rate, barcol hardness, tensile and bending mechanical properties and their failure patterns of composite was studied. The structure and micro morphology were analyzed. Results show that the mass loss rate of composite increased continuely with the increase of UV aging time.The barcol hardness of the irradiated surface was lower than that of non-irradiation surface, and the retained rate of barcol hardness increased first and then dedecreased with the increase of UV aging time. The tensile and bending strength of composite were improved first and then decreased slowly. Cavity density and tenacity white stripe in composite after aging increased, and it presented obvious lamellar wave pattern. Repture of chemical bonds took place in composite and UV irradiation made the structure changed.
中图分类号 TB332 DOI 10.11973/jxgccl201707007
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51465055);新疆自治区自然科学基金资助项目(2014211A010);国家重点实验室开放课题资助项目(Sklms2014005)
收稿日期 2016/10/14
修改稿日期 2017/5/20
网络出版日期
作者单位点击查看
备注王国建(1988-),男,河南商丘人,硕士研究生
引用该论文: WANG Guojian,SUN Yaoning,WANG Xiaoning,JIANG Wanle. Effect of UV Irradiation on Glass Fiber Reinforced Unsaturated Polyester Resin Composite under Warm-Wet Environment[J]. Materials for mechancial engineering, 2017, 41(7): 34~38
王国建,孙耀宁,王晓宁,蒋万乐. 温湿环境下紫外照射对玻璃纤维增强不饱和聚酯树脂基复合材料的影响[J]. 机械工程材料, 2017, 41(7): 34~38
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【5】乔琨,朱波,高学平,等.紫外老化对碳纤维增强环氧树脂复合材料性能的影响[J].功能材料,2012, 43(21):47-51.
【6】BLIAN W. The effect of long-term ultraviolet irradiation on polymer matrix composites[J].Polymer Composites, 1998, 19(4):440-445.
【7】谢可勇,李晖,孙岩,等.湿热老化对纤维增强树脂基复合材料性能的影响及其机理[J].机械工程材料,2014,38(8):1-5.
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【12】回丽,张旭,许磊,等.碳纤维/环氧树脂复合材料湿热老化后的力学性能[J].机械工程材料,2016,40(1):62-65.
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【14】谢龙飞,刘伟庆,齐玉军,等.玻璃纤维增强不饱和聚酯树脂基复合材料的紫外老化性能[J].南京工业大学学报(自然科学版),2014,36(6):93-98.
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