The invention provides a multilayer stage heat protection material and a preparing method thereof. The material comprises an outer layer, a strain isolation layer and an inner layer which are connected in sequence, the outer layer is a fiber reinforced resin-based composite, the strain isolation layer is a high-temperature-resisting rubber layer, the inner layer is a fiber reinforced resin-based porous composite, the high-temperature-resisting rubber layer is vulcanized to be connected with the inner layer, prepreg of the outer layer is cured and then connected to the strain isolation layer, and the method comprises the steps of forming the inner layer, wherein short cut fiber net blanks of the set layer number are laid in a mold, and needling is carried out to obtain a fiber reinforced body; injecting a solution of resin of the inner layer into the fiber reinforced body to be cured; forming the strain isolation layer, wherein the surface of the inner layer is coated with a certain thickness of rubber adhesive capable of being vulcanized at the room temperature, and vulcanizing and shaping are carried out; and forming the outer layer, wherein prepreg of the outer layer is mounted on the strain isolation layer to be cured. The technical problems that according to an existing heat protection material, inner and outer layers are prone to cracking and layering, and the heat protection material fails directly can be solved.

    本发明提供一种多层级热防护材料及其制备方法,包括依次连接的外层、应变隔离层和内层,其中,外层为纤维增强树脂基复合材料,应变隔离层为耐高温橡胶层,内层为纤维增强树脂基多孔复合材料;耐高温橡胶层硫化后与所述内层连接,外层的预浸料经固化后连接在所述应变隔离层上。方法包括:成型内层:在模具中铺设设定层数的短切纤维网胎并进行针刺得到纤维增强体;将内层的树脂的溶液注入到所述纤维增强体中、固化;成型应变隔离层:在内层表面涂敷一定厚度的室温可硫化橡胶粘接剂并硫化定型;成型外层:外层的预浸料设置在应变隔离层上、固化即可。本发明能够解决现有的热防护材料的内外层易开裂分层,直接导致热防护材料失效等技术问题。


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    Titel :

    Multilayer stage heat protection material and preparing method thereof


    Weitere Titelangaben:

    多层级热防护材料及其制备方法


    Beteiligte:
    XU XUEWEI (Autor:in) / XU KONGLI (Autor:in) / XIA YU (Autor:in) / XIE YONGWANG (Autor:in) / ZHAO YUEJIE (Autor:in) / ZHU BAYI (Autor:in)

    Erscheinungsdatum :

    26.06.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64C AEROPLANES , Flugzeuge



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