摘要
采用上浆剂法对短切碳纤维进行了界面改性,并制备了乒乓球拍用短切碳纤维增强乙烯基酯树脂片状模塑料复合板,研究了短切碳纤维长度和压机压力对复合材料拉伸性能的影响,并对断口形貌进行了观察。结果表明,随着碳纤维长度的增加,复合材料的弹性模量和拉伸强度都呈现先增加而后减小的特征,在碳纤维长度为3.9mm时取得弹性模量最大值,在碳纤维长度为9.7mm时取得拉伸强度最大值。当压机压力为2MPa时,复合材料的弹性模量约为12.8GPa;随着压机压力的增加,碳纤维复合材料的弹性模量呈现逐渐增加的趋势,在压机压力为10MPa时取得最大值,约32.2GPa,但是弹性模量提升幅度相对8MPa时较小,且断口中部分碳纤维在高压力下发生了断裂而被树脂基体填充。
Short-cut carbon fibers(SCFs)were modified by sizing agent,and the composite sheet of vinyl ester resin reinforced by SCFs for table tennis racket was prepared.The effects of the length of SCFs and press pressure on the tensile properties of the composites were studied,and the fracture morphology was observed.The results showed that the elastic modulus and tensile strength of the composites increased first and then decreased with the increase of the length of carbon fibers.The maximum elastic modulus was obtained when the length of carbon fibers was 3.9mm and the maximum tensile strength was obtained when the length of carbon fibers was 9.7mm.When press pressure was 2MPa,the elastic modulus of the composites was about 12.8GPa.With the increase of press pressure,the elastic modulus of carbon fiber composites increased gradually.When press pressure was 10MPa,the maximum value was about 32.2GPa,but the increase of elastic modulus was smaller than that of 8MPa,and some carbon fibers in the fracture surface were fractured under high pressure and filled with resin matrix.
作者
宋潇
SONG Xiao(Yulin College,Yulin 719000,Shaanxi,China)
出处
《合成材料老化与应用》
2019年第5期64-66,101,共4页
Synthetic Materials Aging and Application
关键词
乒乓球拍
碳纤维
制备
力学性能
table tennis racket
carbon fiber
preparation
mechanical properties
