Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impregnation-curing treatment method of polysilazane, composite material and preparation method of composite material
The invention discloses a dipping-curing treatment method of polysilazane, a composite material and a preparation method of the composite material, and belongs to the technical field of composite material preparation. In the traditional PIP process of the fiber-reinforced silicon nitride composite material, a polysilazane precursor used for dipping-curing has certain viscosity, a novel polysilazane curing treatment method is adopted, and the precursor is subjected to high-pressure action, so that polysilazane can be fully dipped into a silicon nitride fiber preform, and the fiber-reinforced silicon nitride composite material is obtained. According to the preparation method, the silicon nitride fiber preform can obtain a high-density state after being impregnated and cured by the polysilazane precursor, and the improvement of the curing process ensures that the silicon nitride fiber reinforced silicon nitride composite material with low porosity and high performance can be obtained in the subsequent multi-impregnation-curing-cracking composite process.
本发明公开了聚硅氮烷的浸渍‑固化处理方法及复合材料及其制备方法，属于复合材料制备技术领域。针对纤维增强氮化硅复合材料传统的PIP工艺中，浸渍‑固化所用的聚硅氮烷先驱物具有一定粘度，采用新型聚硅氮烷固化处理方法，通过对先驱物进行高压作用，能够使得聚硅氮烷充分浸入氮化硅纤维预制体中，保证氮化硅纤维预制体在聚硅氮烷先驱物浸渍固化后，能够获得高致密状态，对于固化工艺的改进，从而确保在后续的多次浸渍‑固化‑裂解复合过程中能够获得低气孔率、高性能的氮化硅纤维增强氮化硅复合材料。
Impregnation-curing treatment method of polysilazane, composite material and preparation method of composite material
The invention discloses a dipping-curing treatment method of polysilazane, a composite material and a preparation method of the composite material, and belongs to the technical field of composite material preparation. In the traditional PIP process of the fiber-reinforced silicon nitride composite material, a polysilazane precursor used for dipping-curing has certain viscosity, a novel polysilazane curing treatment method is adopted, and the precursor is subjected to high-pressure action, so that polysilazane can be fully dipped into a silicon nitride fiber preform, and the fiber-reinforced silicon nitride composite material is obtained. According to the preparation method, the silicon nitride fiber preform can obtain a high-density state after being impregnated and cured by the polysilazane precursor, and the improvement of the curing process ensures that the silicon nitride fiber reinforced silicon nitride composite material with low porosity and high performance can be obtained in the subsequent multi-impregnation-curing-cracking composite process.
本发明公开了聚硅氮烷的浸渍‑固化处理方法及复合材料及其制备方法，属于复合材料制备技术领域。针对纤维增强氮化硅复合材料传统的PIP工艺中，浸渍‑固化所用的聚硅氮烷先驱物具有一定粘度，采用新型聚硅氮烷固化处理方法，通过对先驱物进行高压作用，能够使得聚硅氮烷充分浸入氮化硅纤维预制体中，保证氮化硅纤维预制体在聚硅氮烷先驱物浸渍固化后，能够获得高致密状态，对于固化工艺的改进，从而确保在后续的多次浸渍‑固化‑裂解复合过程中能够获得低气孔率、高性能的氮化硅纤维增强氮化硅复合材料。
Impregnation-curing treatment method of polysilazane, composite material and preparation method of composite material
聚硅氮烷的浸渍-固化处理方法及复合材料及其制备方法
HAN YAO (Autor:in) / ZHANG BINGQING (Autor:in) / ZHANG JIAN (Autor:in) / LYU YI (Autor:in)
03.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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