SiC微粉加入对PIP法制备3D-C_f/SiC复合材料的影响
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摘要
本文采用聚合物先驱体浸渍-裂解法(Precursor infiltration pyrolysis,PIP)制备出三维碳纤维增强Si C基复合材料(3D-C_f/Si C),研究了不同含量的Si C微粉对其制备周期、材料致密性和材料抗弯强度的影响。实验结果表明,先驱体溶液中加入适量Si C微粉可缩短3D-C_f/Si C的制备周期。材料致密度与抗弯强度随着先驱体中纳米Si C含量增加而不断增强,当含量达到11.76%时,材料致密度与抗弯强度达到最高,继续增加Si C微粉含量材料致密度与抗弯强度呈下降趋势。
3D-carbon fiber reinforced Si C matrix composite was prepared by precursor infiltration pyrolysis. The effect of Si C concentration on the preparation period,compactness and bending strength of3D-C_f/ Si C were investigated. The results show that the preparation period of 3D-C_f/ Si C can be shortened with adding appropriate amount of Si C to precursor. The compactness and bending strength of 3D-C_f/ Si C is increasing with the content of nano Si C. The performance of compactness and bending strength of 3DC_f/ Si C achieves the best,when Si C content in precursor reaches 11. 76%. However,when the Si C content in precursor is over than 11. 76%,the compactness and bending strength of 3D-C_f/ Si C will decrease.
3D-carbon fiber reinforced Si C matrix composite was prepared by precursor infiltration pyrolysis. The effect of Si C concentration on the preparation period,compactness and bending strength of3D-C_f/ Si C were investigated. The results show that the preparation period of 3D-C_f/ Si C can be shortened with adding appropriate amount of Si C to precursor. The compactness and bending strength of 3D-C_f/ Si C is increasing with the content of nano Si C. The performance of compactness and bending strength of 3DC_f/ Si C achieves the best,when Si C content in precursor reaches 11. 76%. However,when the Si C content in precursor is over than 11. 76%,the compactness and bending strength of 3D-C_f/ Si C will decrease.
引文
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[3]马青松,徐天恒,陈朝辉.浆料中Si C粉含量对PIP法Cf/Si-OC复合材料结构与性能的影响[J].硅酸盐通报,2009,28(增刊):122-125.
[4]张磊,赵东林,沈曾民.聚碳硅烷和二乙烯基苯的交联及纳米Si C陶瓷的制备[J].材料科学与工程学报,2009,27(3):421-425.
[5]简科,陈国民,陈朝辉,等.Si C微粉含量对先驱体转化制备碳纤维布增强碳化硅复合材料性能的影响[J].材料工程,2003,12:23-25.
[6]李专,肖鹏,熊翔.连续纤维增强陶瓷基复合材料的研究进展[J].粉末冶金材料科学与工程,2007,12(1):13-19.