摘要
以碳纤维与环氧树脂为基体,基于钕铁硼粉体与硅烷偶联剂制备了体育设施用碳纤维复合材料,并进行了性能测试,结果表明,在浓HNO3氧化之后与石墨烯改性之后,碳纤维材料表面的相互粘结力度增加,且二者不会彼此排斥,同时也增大了碳纤维材料与环氧树脂基体之间的粘结;在硅烷偶联剂含量不断增加的趋势下,碳纤维碳纤维复合材料磁通量呈现为先增加后减少的状态,在含量2%时复合材料磁通量最大,此时材料磁性能处于最佳状态;钕铁硼含量不同时,碳纤维复合材料在25℃与125℃温度下,磁通量发生了改变,尤其是石墨烯改性后,经过125℃温度处理,碳纤维复合材料出现了退磁现象;基于不同钕铁硼含量,碳纤维复合材料在石墨烯改性后的退磁率明显较小,这就表明钕铁硼含量对于退磁率存在较好的抑制性作用。
Carbon fiber composites for sports facilities were prepared based on neodymium iron boron powder and silane coupling agent with carbon fiber and epoxy resin as matrix,and their properties were tested.The results showed that after oxidation with concentrated HNO3 and modification with graphene,the bonding strength of carbon fiber surface increased,and the two would not repel each other.At the same time,the bonding strength between carbon fiber and epoxy resin increased The results show that the magnetic flux of carbon fiber reinforced carbon fiber composites first increases and then decreases with the increasing content of silane coupling agent,and the magnetic flux of carbon fiber reinforced carbon fiber composites reaches the maximum when the content of silane coupling agent is 2%,and the magnetic properties of carbon fiber reinforced carbon fiber composites are in the best state;when the content of NdFeB is dif ferent,the magnetic flux of carbon fiber reinforced carbon fiber composites changes at 25℃and 125℃,Especially after graphene modification,after 125℃treatment,carbon fiber composites appear demagnetization phenomenon;based on dif ferent NdFeB content,the demagnetization rate of carbon fiber composites after graphene modification is obviously small,it indicates that NdFeB content has a good inhibitory effect on the demagnetization rate.
作者
薛鑫
XUE Xin(Xi'an Aeronautical Polytechnic Institute,Xi'an 710000,Shaanxi,China)
出处
《合成材料老化与应用》
2021年第2期103-105,123,共4页
Synthetic Materials Aging and Application
关键词
体育设施
碳纤维
复合材料
磁通量
钕铁硼
sports facilities
carbon fiber
composite materials
magnetic flux
NdFeB
