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Chopped carbon fiber toughened silicon carbide composite material and preparation method thereof
The invention relates to a chopped carbon fiber toughened silicon carbide composite material and a preparation method thereof. The preparation method comprises the following steps of: reacting chopped carbon fibers with a silane coupling agent, absolute ethyl alcohol and deionized water to obtain coupling agent grafted chopped carbon fibers; mixing the coupling agent grafted chopped carbon fibers with an organic solution of a high-carbon-residual-rate binder to obtain high-carbon-residual-rate binder coated chopped carbon fibers; mixing the high-carbon-residual-rate binder coated chopped carbon fibers with silicon carbide powder to obtain mixed powder; performing dry pressing on the mixed powder to obtain a biscuit, and performing degreasing treatment to obtain a preform; and carrying out reactive infiltration on the preform to obtain the chopped carbon fiber toughened silicon carbide composite material.
本发明涉及一种短切碳纤维增韧碳化硅复合材料及其制备方法，所述制备方法包括：将短切碳纤维、硅烷偶联剂、无水乙醇、去离子水反应得到偶联剂接枝的短切碳纤维；将所述偶联剂接枝的短切碳纤维与高残碳率粘结剂的有机溶液经混合得到高残碳率粘结剂覆膜的短切碳纤维；将所述高残碳率粘结剂覆膜的短切碳纤维与碳化硅粉混合，得到混合粉体；将所述混合粉体经干压成型得到素坯，再经脱脂处理得到预制体；将所述预制体进行反应熔渗，得到所述短切碳纤维增韧碳化硅复合材料。
Chopped carbon fiber toughened silicon carbide composite material and preparation method thereof
The invention relates to a chopped carbon fiber toughened silicon carbide composite material and a preparation method thereof. The preparation method comprises the following steps of: reacting chopped carbon fibers with a silane coupling agent, absolute ethyl alcohol and deionized water to obtain coupling agent grafted chopped carbon fibers; mixing the coupling agent grafted chopped carbon fibers with an organic solution of a high-carbon-residual-rate binder to obtain high-carbon-residual-rate binder coated chopped carbon fibers; mixing the high-carbon-residual-rate binder coated chopped carbon fibers with silicon carbide powder to obtain mixed powder; performing dry pressing on the mixed powder to obtain a biscuit, and performing degreasing treatment to obtain a preform; and carrying out reactive infiltration on the preform to obtain the chopped carbon fiber toughened silicon carbide composite material.
本发明涉及一种短切碳纤维增韧碳化硅复合材料及其制备方法，所述制备方法包括：将短切碳纤维、硅烷偶联剂、无水乙醇、去离子水反应得到偶联剂接枝的短切碳纤维；将所述偶联剂接枝的短切碳纤维与高残碳率粘结剂的有机溶液经混合得到高残碳率粘结剂覆膜的短切碳纤维；将所述高残碳率粘结剂覆膜的短切碳纤维与碳化硅粉混合，得到混合粉体；将所述混合粉体经干压成型得到素坯，再经脱脂处理得到预制体；将所述预制体进行反应熔渗，得到所述短切碳纤维增韧碳化硅复合材料。
Chopped carbon fiber toughened silicon carbide composite material and preparation method thereof
一种短切碳纤维增韧碳化硅复合材料及其制备方法
HUANG ZHENGREN (Autor:in) / CHEN XIAO (Autor:in) / YIN JIE (Autor:in) / LIU XUEJIAN (Autor:in) / CHEN ZHONGMING (Autor:in) / YAO XIUMIN (Autor:in)
16.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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