Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-expansion-coefficient low-thermal-conductivity carbon-based composite material and preparation method thereof
The invention relates to the technical field of solid rocket engine nozzles, in particular to a low-expansion-coefficient low-thermal-conductivity carbon-based composite material and a preparation method thereof. The low-expansion-coefficient low-thermal-conductivity carbon-based composite material is a heat insulation fiber preform reinforced carbon-based composite material, and heat insulation fibers are one or more of high silica fibers, quartz fibers or ceramic fibers; the structural mode of the preform is a structural mode of needling an integral felt and needling, sewing and puncturing a non-woven fabric/net tire; the carbon matrix is formed by carbonizing phenolic resin and furan resin. The invention provides a preparation method of the composite material. The method comprises the following steps: 1) preparing the heat insulation fiber preform; (2) pretreating the heat insulation fiber preform; (3) impregnating resin by adopting vacuum/pressure; (4) obtaining a resin carbon matrix by adopting a normal-pressure carbonization process; and (5) repeating the steps (3) and (4) for several times to obtain the composite materials with different densities. The method can effectively solve the fracture problem caused by the mismatch due to thermal expansion.
本发明涉及固体火箭发动机喷管技术领域，具体涉及一种低膨胀系数低热导率碳基复合材料及制备方法。一种低膨胀系数低热导率碳基复合材料，为隔热纤维预制体增强碳基复合材料，所述的隔热纤维为高硅氧纤维、石英纤维或陶瓷纤维的一种及以上混杂；所述的预制体结构方式为针刺整体毡、无纬布/网胎针刺、缝合和穿刺结构形式；所述的碳基体采用酚醛树脂和呋喃树脂碳化而成。本发明提供复合材料的制备方法，制备过程为，1）制备隔热纤维预制体；2）隔热纤维预制体预处理；3）采用真空/压力浸渍树脂；4）采用常压碳化工艺获得树脂碳基体；5）通过重复3）和4）过程次数获得不同密度的复合材料。本发明有效解决因热膨胀不匹配导致的断裂问题。
Low-expansion-coefficient low-thermal-conductivity carbon-based composite material and preparation method thereof
The invention relates to the technical field of solid rocket engine nozzles, in particular to a low-expansion-coefficient low-thermal-conductivity carbon-based composite material and a preparation method thereof. The low-expansion-coefficient low-thermal-conductivity carbon-based composite material is a heat insulation fiber preform reinforced carbon-based composite material, and heat insulation fibers are one or more of high silica fibers, quartz fibers or ceramic fibers; the structural mode of the preform is a structural mode of needling an integral felt and needling, sewing and puncturing a non-woven fabric/net tire; the carbon matrix is formed by carbonizing phenolic resin and furan resin. The invention provides a preparation method of the composite material. The method comprises the following steps: 1) preparing the heat insulation fiber preform; (2) pretreating the heat insulation fiber preform; (3) impregnating resin by adopting vacuum/pressure; (4) obtaining a resin carbon matrix by adopting a normal-pressure carbonization process; and (5) repeating the steps (3) and (4) for several times to obtain the composite materials with different densities. The method can effectively solve the fracture problem caused by the mismatch due to thermal expansion.
本发明涉及固体火箭发动机喷管技术领域，具体涉及一种低膨胀系数低热导率碳基复合材料及制备方法。一种低膨胀系数低热导率碳基复合材料，为隔热纤维预制体增强碳基复合材料，所述的隔热纤维为高硅氧纤维、石英纤维或陶瓷纤维的一种及以上混杂；所述的预制体结构方式为针刺整体毡、无纬布/网胎针刺、缝合和穿刺结构形式；所述的碳基体采用酚醛树脂和呋喃树脂碳化而成。本发明提供复合材料的制备方法，制备过程为，1）制备隔热纤维预制体；2）隔热纤维预制体预处理；3）采用真空/压力浸渍树脂；4）采用常压碳化工艺获得树脂碳基体；5）通过重复3）和4）过程次数获得不同密度的复合材料。本发明有效解决因热膨胀不匹配导致的断裂问题。
Low-expansion-coefficient low-thermal-conductivity carbon-based composite material and preparation method thereof
一种低膨胀系数低热导率碳基复合材料及制备方法
YAN KEFEI (Autor:in) / LI TING (Autor:in) / FAN ZHE (Autor:in) / YANG JUNJIE (Autor:in) / ZHANG CHUAN (Autor:in) / A LONGGA (Autor:in) / FAN KAIFENG (Autor:in)
11.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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