国产T800级碳纤维/环氧树脂复合材料湿热性能
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摘要
采用扫描电镜、红外图谱分析三种国产T800级碳纤维的物理形貌以及表面上浆剂的化学结构。针对三种国产T800级碳纤维(CCF800)/环氧树脂复合材料在湿热环境下的吸湿行为,研究经不同时间湿热和高温环境下处理后的层间剪切性能,并通过扫描电镜观察湿热处理后的复合材料界面结合状态。结果表明:三种国产T800级碳纤维表面物理形貌相同,而表面化学结构存在一定差异;三种碳纤维环氧复合材料的"饱和"吸湿周期相同,约为54 d,95%饱和吸湿周期也相同,约为30 d;而饱和吸湿量存在明显差异,其中3号纤维上浆剂中由于羟基含量最高,导致其环氧树脂基复合材料吸湿率最高,在高温高湿作用下,层间剪切强度下降最为明显。
Scanning electron microscope(SEM) was used to study the morphologies of 3 kinds of domestic T800 carbon fiber(CCF800).Infrared spectrogram was used to analyse the structure of CCF800 sizing agent.In order to study the hygrothermal properties of domestic CCF800/epoxy composites,moisture absorption behavior and interlaminar shear property under hygrothermal environment were tested.Furthermore,SEM was used to study the interface between carbon fiber and epoxy after hygrothermal treatment.The results show that the morphologies of the 3 kinds of CCF800 are similar,while the chemical structures of sizing agent have a difference.The three kinds of CCF800/epoxy composite share the similar saturated moisture absorption period,that is about54 days.And 95% saturated moisture absorption period is also the same,that is about 30 days.However,there is a obvious difference in saturated moisture absorption.In CCF800-3 sizing agent,the highest content of hydroxy leads to the highest moisture absorption rate of its epoxy resin matrix composite,and the interlaminar shear strength decreases most obviously under the action of high temperature and high humidity.
Scanning electron microscope(SEM) was used to study the morphologies of 3 kinds of domestic T800 carbon fiber(CCF800).Infrared spectrogram was used to analyse the structure of CCF800 sizing agent.In order to study the hygrothermal properties of domestic CCF800/epoxy composites,moisture absorption behavior and interlaminar shear property under hygrothermal environment were tested.Furthermore,SEM was used to study the interface between carbon fiber and epoxy after hygrothermal treatment.The results show that the morphologies of the 3 kinds of CCF800 are similar,while the chemical structures of sizing agent have a difference.The three kinds of CCF800/epoxy composite share the similar saturated moisture absorption period,that is about54 days.And 95% saturated moisture absorption period is also the same,that is about 30 days.However,there is a obvious difference in saturated moisture absorption.In CCF800-3 sizing agent,the highest content of hydroxy leads to the highest moisture absorption rate of its epoxy resin matrix composite,and the interlaminar shear strength decreases most obviously under the action of high temperature and high humidity.
引文
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[15]王迎芬,彭公秋,谢富原,等.国产T700级碳纤维表面特性对BMI复合材料湿热性能的影响[J].航空制造技术,2014,447(3):90-94.(WANG Y F,PENG G Q,XIE F Y,et al.Effect of surface properties of domestic T700 grade carbon fiber on hygrothermal performance of BMI composites[J].Aeronautical Manufacturing Technology,2014,447(3):90-94.)
[16]MAGGANA C,PISSIS P.Water sorption and diffusion studies in an epoxy resin system[J].Journal of Polymer Science:Part B:Polymer Physics,1999,37(11):1165-1182.
[17]郑路,常新龙,赵峰,等.湿热环境中复合材料吸湿性研究[J].纤维复合材料,2007,24(2):37-39.(ZHENG L,CHANG X L,ZHAO F,et al.Research on moisture absorption of composites in the hygrothermal environment[J].Fiber Composites,2007,24(2):37-39.)
[18]过梅丽,谢令.航空航天结构复合材料湿热老化机理的研究[J].宇航材料工艺,2002,32(4):51-54.(GUO M L,XIE L.Study on hygrothermal aging mechanisms of aerospace structural composites[J].AerospaceMaterials&Technology,2002,32(4):51-54.)
[19]封彤波,肇研,罗云烽,等.不同上浆剂的国产碳纤维复合材料湿热性能研究[J].材料工程,2009(10):36-40.(FENG T B,ZHAO Y,LUO Y F.et al Hygrothermal property of CCF/BMI composites with different sizing on the carbon fiber[J].Journal of Materials Engineering,2009(10):36-40.)
[20]JEDIDI J,JACQUEMIN F,VAUTRIN A.Design of accelerated hygrothermal cycles on polymer matrix composites in the case of a supersonic aircraft[J].Composite Structures,2005,68(4):429-437.
[21]SELZER R,FRIEDRICH K.Mechanical properties and failure behaviour of carbon fibre-reinforced polymer composites under the influence of moisture[J].Composites:Part A:Applied Science and Manufacturing,1997,28(6):595-604.
[2]QIN W,VAUTARD F,DRZAL L T,et al.Mechanical and electrical properties of carbon fiber composites with incorporation of graphene nanoplatelets at the fibermatrix interphase[J].Composites:Part B:Engineering,2015,69:335-341.
[3]PEEBLES L H.Carbon fibers:formation,structure,and properties[M].Boca Raton,US:CRC Press,c1995.
[4]RAY B C,RATHORE D.Environmental damage and degradation of FRP composites:a review report[J].Polymer Composites,2015,36(3):410-423.
[5]MAROUANI S,CURTIL L,HAMELIN P.Ageing of carbon/epoxy and carbon/vinylester composites used in the reinforcement and/or the repair of civil engineering structures[J].Composites:Part B:Engineering,2012,43(4):2020-2030.
[6]ALESSI S,PITARRESI G,SPADARO G.Effect of hydrothermal ageing on the thermal and delamination fracture behaviour of CCFRP composites[J].Composites:Part B:Engineering,2014,67:145-153.
[7]双超,刘璐璐,赵振华,等.湿热老化后碳纤维复合材料层间剪切强度实验方法对比研究[J].航空材料学报,2017,37(5):90-98.(SHUANG C,LIU L L,ZHAO Z H,et al.Comparison study on interlaminar shear strength testing methods of CFRP under hygrothermal aging conditions[J].Journal of Aeronautical Materials,2017,37(5):90-98.)
[8]李国丽,彭公秋,王迎芬,等.国产T700级碳纤维增强双马树脂基复合材料的力学性能[J].航空材料学报,2017,37(2):63-72.(LI G L,PENG G Q,WANG Y F,et al.Mechanical properties of domestic T700 grade carbon fibers/QY9611BMI matrix composites[J].Journal of Aeronautical Materials,2017,37(2):63-72.)
[9]罗云烽,李阳,肈研,等.国产T800级炭纤维表面特性及其复合材料微观界面性能[J].材料工程,2014(9):83-88.(LUO Y F,LI Y,ZHAO Y,et al.Surface characteristics of domestic T-800 grade carbon fibers and microscopic interphase properties of composites[J].Journal of Materials Engineering,2014(9):83-88.)
[10]李伟东,张金栋,刘刚,等.国产T800碳纤维/双马来酰亚胺复合材料的界面及力学性能[J].复合材料学报,2016,33(7):1484-1491.(LI W D,ZHANG J D,LIU G,et al.Interfacial and mechanical properties of domestic T800 carbon fiber/bismaleimide composites[J].Acta Materiae Compositae Sinica,2016,33(7):1484-1491.)
[11]刘卫丹,陈俊林,李阳,等.国产800级碳纤维表面状态及其复合材料界面性能[J].材料工程,2016,44(10):88-93.(LIU W D,CHEN J L,LI Y,et al.Surface state of domestic 800-grade carbon fibers and interface property of composites[J].Journal of Materials Engineering,2016,44(10):88-93.)
[12]王莉,熊舒,肇研,等.T800级碳纤维复合材料抗冲击性能[J].航空材料学报,2018,38(5):147-152.(WANG L,XIONG S,ZHAO Y,et al.Impact resistance of T800 carbon fiber composite materials[J].Journal of Aeronautical Materials,2018,38(5):147-152.)
[13]井敏,谭婷婷,王成国,等.东丽T800H与T800S碳纤维的微观结构比较[J].材料科学与工艺,2015(2):45-52.(JING M,TAN T T,WANG C G,et al.Comparison on the microstructure of Toray T800H and T800S carbon fiber[J].Materials Science&Technology,2015(2):45-52.)
[14]肇研,段跃新,肖何.上浆剂对碳纤维表面性能的影响[J].材料工程,2007(增刊1):121-126.(ZHAO Y,DUAN Y X,XIAO H.Study on the surface properties of carbon fibers affected by sizing agent[J].Journal of Materials Engineering,2007(Suppl 1):121-126.)
[15]王迎芬,彭公秋,谢富原,等.国产T700级碳纤维表面特性对BMI复合材料湿热性能的影响[J].航空制造技术,2014,447(3):90-94.(WANG Y F,PENG G Q,XIE F Y,et al.Effect of surface properties of domestic T700 grade carbon fiber on hygrothermal performance of BMI composites[J].Aeronautical Manufacturing Technology,2014,447(3):90-94.)
[16]MAGGANA C,PISSIS P.Water sorption and diffusion studies in an epoxy resin system[J].Journal of Polymer Science:Part B:Polymer Physics,1999,37(11):1165-1182.
[17]郑路,常新龙,赵峰,等.湿热环境中复合材料吸湿性研究[J].纤维复合材料,2007,24(2):37-39.(ZHENG L,CHANG X L,ZHAO F,et al.Research on moisture absorption of composites in the hygrothermal environment[J].Fiber Composites,2007,24(2):37-39.)
[18]过梅丽,谢令.航空航天结构复合材料湿热老化机理的研究[J].宇航材料工艺,2002,32(4):51-54.(GUO M L,XIE L.Study on hygrothermal aging mechanisms of aerospace structural composites[J].AerospaceMaterials&Technology,2002,32(4):51-54.)
[19]封彤波,肇研,罗云烽,等.不同上浆剂的国产碳纤维复合材料湿热性能研究[J].材料工程,2009(10):36-40.(FENG T B,ZHAO Y,LUO Y F.et al Hygrothermal property of CCF/BMI composites with different sizing on the carbon fiber[J].Journal of Materials Engineering,2009(10):36-40.)
[20]JEDIDI J,JACQUEMIN F,VAUTRIN A.Design of accelerated hygrothermal cycles on polymer matrix composites in the case of a supersonic aircraft[J].Composite Structures,2005,68(4):429-437.
[21]SELZER R,FRIEDRICH K.Mechanical properties and failure behaviour of carbon fibre-reinforced polymer composites under the influence of moisture[J].Composites:Part A:Applied Science and Manufacturing,1997,28(6):595-604.