采用X射线光电子能谱、扫描电子显微镜和动态接触角等方法对比解析了TZ700S、SYT49、HF30S、ZT7H和T700S这5个牌号的T700级碳纤维的表截面理化结构及其对碳纤维的环氧树脂浸润性的影响。结果表明:5种碳纤维的截面形貌均为近圆形,仅ZT7H的表面具有沟槽结构、其余4种均为光洁表面;表面O/C值的大小排序为CFSYT49>CFHF30S>CFTZ-700S>CFT700S>CFZT7H,分布在0.267～0.289之间;在60℃下的E51环氧树脂/酸酐固化剂体系的动态前进角大小为CFSYT49<CFHF30S<CFTZ-700S<CFZT7H<CFT700S,接触角分布在63.51°～66.52°之间,4种国产T700级碳纤维表现出较日本东丽公司T700S碳纤维更小的接触角,树脂的浸润性更优。
The physical and chemical structures of the surface and cross-section of TZ700S,SYT49,HF30S,ZT7H and T700S carbon fibers whose properties were similar to T700S,and their effects on the epoxy resin impregnation of carbon fibers were compared and analyzed,through X-ray photoelectron spectroscopy and scanning electron microscope and dynamic contact angle.The results showed that,the cross-sectional morphology of the four domestic and one Japanese carbon fibers were all nearly circular,and only the surface of ZT7H had groove structures.The surface O/C values of the five carbon fibers were CFSYT49>CFHF30S>CFTZ-700S>CFT700S>CFZT7H,which were distributed between 0.267 and 0.289.The order of the dynamic advancing angles of the five carbon fibers in the E51/anhydride epoxy resin system at 60℃ was CFSYT49<CFHF30S<CFTZ-700S<CFZT7H<CF T700S,and the contact angles were between 63.51°～66.52°.The four domestic T700 carbon fibers showed a smaller contact angle than the Toray T700S carbon fiber,and the resin impregnation effect was better.
[1] El-Hofy M H,El-Hofy H.Laser beam machining of carbon fiber reinforced composites:a review[J].International Journal of Advanced Manufacturing Technology,2019,101(9-12):2965-2975.
[2] Forintos N,Czigany T.Multifunctional application of carbon fiber reinforced polymer composites:electrical properties of the reinforcing carbon fibers-a short review[J].Composites:Part B:Engineering,2019,162:331-343.
[3] Wang H J,Wang H F,Li D H,et al.The effect of graphitization temperature on the microstructure and mechanical properties of carbon fibers[J].New Carbon Materials,2005,20(2):157-163.
[4] 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(4):90-97.
[5] 彭公秋,杨进军,曹正华,等.碳纤维增强树脂基复合材料的界面[J].材料导报,2011(7):1-4.
[6] 郭全贵,岳秀珍,李安邦,等.单丝拔出实验表征碳纤维增强水泥复合材料的界面[J].纤维复合材料,1995(3):42-46.
[7] 刘建昆,游利锋,周丽.碳纤维增强树脂基复合材料的界面研究[J].轻工科技,2018,34(6):104-105.
[8] 张叶凡,梁耕源,尹昌平,等.纤维增强树脂基复合材料界面相容性研究现状[J].强度与环境,2020,47(3):43-49.
[9] 曹芳维,李敏,王绍凯,等.碳纤维与环氧树脂润湿和黏附作用[J].复合材料学,2011,28(4):23-28.
[10] 李江洪,郑亚萍,张曦,等.RTM用环氧树脂体系的浸润性及化学流变特性研究[J].中国塑料,2012,26(1):71-76.
[11] 钱程,王晓钧,韩楠林,等.自行车架用碳纤维与环氧树脂浸润性研究[J].热固性树脂,2015,30(1):44-48.
[12] 李桂洋,李健芳,杨云华,等.三种T700级碳纤维及其复合材料性能比较[J].宇航材料工艺,2016(4):32-36.
[13] 何先成,钟翔屿,李晔,等.RTM工艺成型国产T700碳纤维复合材料湿热性能[J].高科技纤维与应用,2016,41(6):47-56.
[14] Dai Z,Shi F,Zhang B,et al.Effect of sizing on carbon fiber surface properties and fibers/epoxy interfacial adhesion[J].Applied Surface Science,2011,257(15):6980-6985.
[15] Seo M K,Park S J.Surface characteristics of carbon fibers modified by direct oxyfluorination[J].Journal of Colloid and Interface Science,2009,330(1):237-242.
[16] 尹洪峰,徐永东,成来飞,等.界面相对碳纤维增韧碳化硅复合材料性能的影响[J].硅酸盐学报,2000,28(1):1-5.
[17] 杨浩邈.玻璃纤维—树脂接触角及润湿特性研究[D].重庆:重庆大学,2012.
[18] 杨浩邈,刘娜,孙静,等.接触角测量方法及其对纤维/树脂体系的适应性研究[J].玻璃钢/复合材料,2014(1):22-28.
[19] 唐琴琼,王康建,刘才容,等.树脂对纤维浸润性能的检测方法探讨[J].测试分析,2015(3):67-69.
PDF
