摘要
煤炭巷道支护用纤维复材的服役寿命与碳纤维复合材料的力学性能和耐水性能有关,为了提升煤炭巷道支护用纤维复材的力学性能和耐水性能,制备了不同碳纤维质量分数的碳纤维复合材料,考察了碳纤维质量分数对纤维复材力学性能和耐水性能的影响。结果表明,碳纤维复合材料中增加碳纤维质量分数会降低碳纤维复合材料的抗拉强度和断裂伸长率;碳纤维复合材料的硬度会随着碳纤维质量分数增加而增大,在碳纤维含量为15%时碳纤维复合材料的硬度取得最大值。相同吸水时间下碳纤维复合材料的吸水率从大至小顺序为:碳纤维质量分数15%>碳纤维质量分数13%>碳纤维质量分数11%>碳纤维质量分数9%>碳纤维质量分数7%,即相同吸水时间下碳纤维质量分数越大则碳纤维复合材料的吸水率越高。碳纤维复合材料的接触角会随着碳纤维质量分数增加而减小,在碳纤维含量为15%时碳纤维复合材料的接触角取得最小值。
The service life of fiber composite materials for coal roadway support is related to the mechanical and wa⁃ter resistance properties of carbon fiber composite materials.In order to improve the mechanical and water resis⁃tance properties of fiber composite materials for coal roadway support,carbon fiber composite materials with differ⁃ent carbon fiber mass fractions were prepared.The effects of carbon fiber mass fraction on the mechanical proper⁃ties and water resistance of fiber composite materials were investigated.The results show that the increase of carbon fiber mass fraction in carbon fiber composites will reduce the tensile strength and elongation at break of carbon fiber composites.The hardness of carbon fiber composites increases with the increase of carbon fiber mass fraction,and the hardness of carbon fiber composites reaches the maximum when the carbon fiber content is 15%.Under the same water absorption time,the order of water absorption rate of carbon fiber composites from large to small is:car⁃bon fiber mass fraction 15%>carbon fiber mass fraction 13%>carbon fiber mass fraction 11%>carbon fibermass fraction 9%>carbon fiber mass fraction 7%,that is,under the same water absorption time,the higher the car⁃bon fiber mass fraction,the higher the water absorption rate of carbon fiber composites.The contact angle of carbon fiber composites decreases with the increase of carbon fiber mass fraction,and the contact angle of carbon fiber com⁃posites reaches the minimum value when the carbon fiber content is 15%.
作者
宋盛
SONG Sheng(CHN Energy Group Shendong Coal Group Equipment Maintenance Center,Ordos 017200,Inner Mongolia China)
出处
《粘接》
2025年第8期79-82,共4页
Adhesion
基金
国家能源集团神东煤炭集团企业科研项目(项目编号:2023150203000040)。
关键词
煤炭巷道
碳纤维复合材料
碳纤维质量分数
力学性能
耐水性能
coal roadway
carbon fiber composite materials
carbon fiber mass fraction
mechanical properties
wa⁃ter resistance performance
