Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing gradient variable modulus silicon carbide fiber reinforced silicon carbide-based composite material
The invention relates to a method for preparing a silicon carbide fiber reinforced silicon carbide-based composite material and a part thereof, which comprises the following steps of: preparing single-layer prepregs of high carbon residue resin and pore-forming agent resin in different proportions in advance, and then paving the prepregs by selecting the prepregs with different components in the prepreg paving process, so as to prepare the silicon carbide fiber reinforced silicon carbide-based composite material and the part thereof. According to the method, the pore structure of a paved component or product after carbonization is adjusted, when the content of a pore-forming agent is low, the content of silicon carbide in a formed matrix is high, the modulus of the material is large, and the wear resistance is correspondingly improved, and when the content of the pore-forming agent is high, the content of silicon carbide in the formed matrix is low, the modulus of the material is reduced, and the possibility of pore blocking in the infiltration process is reduced; compared with the prior art, the gradient variable modulus composite material has good manufacturability, so that according to the technical scheme, the gradient variable modulus composite material can be prepared by laying prepregs with different components at different parts in the laying process, and the difference requirements of different areas of a component or a product on the material performance are met.
本发明是一种制备碳化硅纤维增强碳化硅基复合材料及其零件的方法，该方法是预先制备不同比例高残炭树脂与造孔剂树脂的单层预浸料，然后在预浸料铺贴过程中，通过选择不同组分的预浸料，调整铺帖完成的构件或产品碳化后孔隙结构，当造孔剂含量较少时，形成的基体碳化硅含量较高，材料模量大，相应的耐磨性能提高，当造孔剂含量较多时，形成的基体碳化硅含量较低，材料的模量降低，熔渗过程中发生堵孔的可能性降低，材料的工艺性好，这样，本发明技术方案就能够通过在铺层过程中不同部位铺放不同组分的预浸料，制备梯度变模量复合材料，从而满足构件或产品不同区域对材料性能的差异性需求。
Method for preparing gradient variable modulus silicon carbide fiber reinforced silicon carbide-based composite material
The invention relates to a method for preparing a silicon carbide fiber reinforced silicon carbide-based composite material and a part thereof, which comprises the following steps of: preparing single-layer prepregs of high carbon residue resin and pore-forming agent resin in different proportions in advance, and then paving the prepregs by selecting the prepregs with different components in the prepreg paving process, so as to prepare the silicon carbide fiber reinforced silicon carbide-based composite material and the part thereof. According to the method, the pore structure of a paved component or product after carbonization is adjusted, when the content of a pore-forming agent is low, the content of silicon carbide in a formed matrix is high, the modulus of the material is large, and the wear resistance is correspondingly improved, and when the content of the pore-forming agent is high, the content of silicon carbide in the formed matrix is low, the modulus of the material is reduced, and the possibility of pore blocking in the infiltration process is reduced; compared with the prior art, the gradient variable modulus composite material has good manufacturability, so that according to the technical scheme, the gradient variable modulus composite material can be prepared by laying prepregs with different components at different parts in the laying process, and the difference requirements of different areas of a component or a product on the material performance are met.
本发明是一种制备碳化硅纤维增强碳化硅基复合材料及其零件的方法，该方法是预先制备不同比例高残炭树脂与造孔剂树脂的单层预浸料，然后在预浸料铺贴过程中，通过选择不同组分的预浸料，调整铺帖完成的构件或产品碳化后孔隙结构，当造孔剂含量较少时，形成的基体碳化硅含量较高，材料模量大，相应的耐磨性能提高，当造孔剂含量较多时，形成的基体碳化硅含量较低，材料的模量降低，熔渗过程中发生堵孔的可能性降低，材料的工艺性好，这样，本发明技术方案就能够通过在铺层过程中不同部位铺放不同组分的预浸料，制备梯度变模量复合材料，从而满足构件或产品不同区域对材料性能的差异性需求。
Method for preparing gradient variable modulus silicon carbide fiber reinforced silicon carbide-based composite material
制备梯度变模量碳化硅纤维增强碳化硅基复合材料的方法
YANG JINHUA (Autor:in) / JIAO JIAN (Autor:in) / YANG RUI (Autor:in) / JIANG ZHUOYU (Autor:in) / JIAO CHUNRONG (Autor:in) / SUN SHIJIE (Autor:in)
02.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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