干燥温度对CFRP力学性能的影响及作用机理
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摘要
采用2种环境温度(70、85℃)对碳纤维增强树脂基复合材料(CFRP)层合板进行干燥处理,并对CFRP层合板分别进行拉伸、压缩和剪切实验,研究了中温干燥条件对CFRP层合板力学性能的影响,通过扫描电子显微镜和红外光谱,分析了中温干燥环境对CFRP层板的影响机理;通过最小二乘法拟合方法,提出了干燥环境下CFRP层合板力学性能的预测公式。研究结果表明:与未经干燥的试样相比,经中温干燥环境处理的CFRP层板的90°拉伸强度增加24. 99%,±45°剪切强度下降12. 92%;中温干燥环境对CFRP层合板力学性能的影响是由后固化作用和复合材料内部的热应力共同决定的,在中温干燥环境下,CFRP层合板未发生化学结构变化,CFRP层合板中的环氧基发生了进一步交联,环氧基树脂被后固化增强;拟合建立的不同干燥条件下的力学性能预测公式与实验结果基本一致。
Carbon fiber reinforced plastics( CFRP) was dried under two different temperatures(70、85 ℃). Tensile,compressive and shear tests were carried out to study the effects of middle temperature dried conditions on the mechanical behaviors of CFRP laminates. The effect of middle temperature dried environments on CFRP laminates was analyzed by scanning electron microscopy and infrared spectroscopy. A formula which could predict the mechanical properties of CFRP laminates in dried environments was proposed by least square method. The results showed that compared with the un-dried samples,the 90° tensile strength of the CFRP laminates treated by the middle temperature dried environments increased by24. 99%,and the ± 45° shear strength of treated CFRP laminates decreased by 12. 92%. The effect of middle temperature dried environments on the mechanical properties of CFRP laminates was determined by both the post curing and the thermal stress in the composite. In the middle temperature dried environments,there was no chemical structure change in the CFRP laminates. The epoxy groups in the CFRP laminates were further crosslinked,the epoxy resin was post-curing strengthened. The formula of mechanical behavior prediction in different dried conditions was basically consistent with the experimental results.
Carbon fiber reinforced plastics( CFRP) was dried under two different temperatures(70、85 ℃). Tensile,compressive and shear tests were carried out to study the effects of middle temperature dried conditions on the mechanical behaviors of CFRP laminates. The effect of middle temperature dried environments on CFRP laminates was analyzed by scanning electron microscopy and infrared spectroscopy. A formula which could predict the mechanical properties of CFRP laminates in dried environments was proposed by least square method. The results showed that compared with the un-dried samples,the 90° tensile strength of the CFRP laminates treated by the middle temperature dried environments increased by24. 99%,and the ± 45° shear strength of treated CFRP laminates decreased by 12. 92%. The effect of middle temperature dried environments on the mechanical properties of CFRP laminates was determined by both the post curing and the thermal stress in the composite. In the middle temperature dried environments,there was no chemical structure change in the CFRP laminates. The epoxy groups in the CFRP laminates were further crosslinked,the epoxy resin was post-curing strengthened. The formula of mechanical behavior prediction in different dried conditions was basically consistent with the experimental results.
引文
[1] SOUTIS C. Carbon fiber reinforced plastics in aircraft construction[J]. Materials Science&Engineering:A,2005,412(1/2):171-176.
[2] FRIEDRICH K,ALMAJID A A. Manufacturing aspects of advanced polymer composites for automotive applications[J]. Applied Composite Materials,2013,20(2):107-128.
[3]马立敏,张嘉振,岳广全,等.复合材料在新一代大型民用飞机中的应用[J].复合材料学报,2015,32(2):317-322.
[4]邢丽英,包建文,礼嵩明,等.先进树脂基复合材料发展现状和面临的挑战[J].复合材料学报,2016,33(7):1327-1338.
[5]司卫华.船舶复合材料国外最新进展[J].塑料工业,2011,39(6):1-7.
[6]王云英,刘杰,孟江燕,等.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.
[7] RAY B C,RATHORE D. Durability and integrity studies of environmentally conditioned interfaces in fibrous polymeric composites:critical concepts and comments[J]. Advances in Colloid and Interface Science,2014,209:68.
[8]张晓云,曹东,陆峰,等. T700/5224复合材料在湿热环境和化学介质中的老化行为[J].材料工程,2016,44(4):82-88.
[9] GENNA S,TROVALUSCI F,TAGLIAFERRI V. Indentation test to study the moisture absorption effect on CFRP composite[J].Composites Part B:Engineering,2017,124:1-8.
[10]冯青,李敏,顾轶卓,等.不同湿热条件下碳纤维/环氧复合材料湿热性能实验研究[J].复合材料学报,2010,27(6):16-20.
[11]栗晓飞,张琦,谢国君,等.影响碳纤维增强树脂基复合材料腐蚀重要环境因素的研究[J].装备环境工程,2005,2(6):34-40.
[12]马少华,费昺强,许良,等.热氧老化对碳纤维双马树脂基复合材料性能的影响[J].材料工程,2017,45(12):50-57.
[13]高禹,刘佳琦,王绍权,等.高温老化对T700/HT280双马来酰亚胺复合材料疲劳性能的影响[J].复合材料学报,2017,34(2):240-246.
[14] JIA Z,LI T,CHIANG F,et al. An experimental investigation of the temperature effect on the mechanics of carbon fiber reinforced polymer composites[J]. Composites Science&Technology,2018,154:53-63.
[15] EFTEKHARI M,FATEMI A. Tensile behavior of thermoplastic composites including temperature,moisture and hygrothermal effects[J]. Polymer Testing,2016,51:151-164.
[16]宋健,温卫东.考虑温度环境下树脂基复合材料力学性能及模型研究[J].航空动力学报,2016,31(1):31-39.
[17]高鸿宾.有机化学[M]. 4版.北京:高等教育出版社,2005.
[18]卢少微,张海军,高禹,等.后固化对复合材料热膨胀系数的影响[J].固体火箭技术,2013,36(2):246-249.
[19] BULMANIS V N,GUNYAEV G M,KRIVONOS V V. RISA SPA VLAM[M]. Moscow:USSR,1991.
[20]张颖军,朱锡,梅志远,等.聚合物基复合材料老化剩余强度等效预测方法研究[J].材料导报,2012,26(8):150-152.
[2] FRIEDRICH K,ALMAJID A A. Manufacturing aspects of advanced polymer composites for automotive applications[J]. Applied Composite Materials,2013,20(2):107-128.
[3]马立敏,张嘉振,岳广全,等.复合材料在新一代大型民用飞机中的应用[J].复合材料学报,2015,32(2):317-322.
[4]邢丽英,包建文,礼嵩明,等.先进树脂基复合材料发展现状和面临的挑战[J].复合材料学报,2016,33(7):1327-1338.
[5]司卫华.船舶复合材料国外最新进展[J].塑料工业,2011,39(6):1-7.
[6]王云英,刘杰,孟江燕,等.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.
[7] RAY B C,RATHORE D. Durability and integrity studies of environmentally conditioned interfaces in fibrous polymeric composites:critical concepts and comments[J]. Advances in Colloid and Interface Science,2014,209:68.
[8]张晓云,曹东,陆峰,等. T700/5224复合材料在湿热环境和化学介质中的老化行为[J].材料工程,2016,44(4):82-88.
[9] GENNA S,TROVALUSCI F,TAGLIAFERRI V. Indentation test to study the moisture absorption effect on CFRP composite[J].Composites Part B:Engineering,2017,124:1-8.
[10]冯青,李敏,顾轶卓,等.不同湿热条件下碳纤维/环氧复合材料湿热性能实验研究[J].复合材料学报,2010,27(6):16-20.
[11]栗晓飞,张琦,谢国君,等.影响碳纤维增强树脂基复合材料腐蚀重要环境因素的研究[J].装备环境工程,2005,2(6):34-40.
[12]马少华,费昺强,许良,等.热氧老化对碳纤维双马树脂基复合材料性能的影响[J].材料工程,2017,45(12):50-57.
[13]高禹,刘佳琦,王绍权,等.高温老化对T700/HT280双马来酰亚胺复合材料疲劳性能的影响[J].复合材料学报,2017,34(2):240-246.
[14] JIA Z,LI T,CHIANG F,et al. An experimental investigation of the temperature effect on the mechanics of carbon fiber reinforced polymer composites[J]. Composites Science&Technology,2018,154:53-63.
[15] EFTEKHARI M,FATEMI A. Tensile behavior of thermoplastic composites including temperature,moisture and hygrothermal effects[J]. Polymer Testing,2016,51:151-164.
[16]宋健,温卫东.考虑温度环境下树脂基复合材料力学性能及模型研究[J].航空动力学报,2016,31(1):31-39.
[17]高鸿宾.有机化学[M]. 4版.北京:高等教育出版社,2005.
[18]卢少微,张海军,高禹,等.后固化对复合材料热膨胀系数的影响[J].固体火箭技术,2013,36(2):246-249.
[19] BULMANIS V N,GUNYAEV G M,KRIVONOS V V. RISA SPA VLAM[M]. Moscow:USSR,1991.
[20]张颖军,朱锡,梅志远,等.聚合物基复合材料老化剩余强度等效预测方法研究[J].材料导报,2012,26(8):150-152.
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