Silicon carbide-based, porous structural material being heat-resistant and super lightweight
    78.
    发明申请
    Silicon carbide-based, porous structural material being heat-resistant and super lightweight 审中-公开
    碳化硅基多孔结构材料耐热且超轻

    公开(公告)号:US20050020431A1

    公开(公告)日:2005-01-27

    申请号:US10485119

    申请日:2002-08-05

    Applicant: Eiji Tani

    Inventor: Eiji Tani

    Abstract: The present invention provides a silicon carbide-based heat-resistant, ultra lightweight, porous structural material having the same shape as that of a spongy porous body and also provides a process for readily producing the material. In the process of the present invention, slurry containing silicon powder and a resin is applied to the framework of the spongy porous body by an impregnation method in such a manner that interconnected pores of the porous body are not plugged with the slurry; the resulting porous body is carbonized at a temperature of 900° C. to 1320° C. in vacuum or in an inert atmosphere; the resulting porous body is subjected to reactive sintering at a temperature of 1320° C. or more in vacuum or in an inert atmosphere, whereby silicon carbide having high wettability to molten silicon is produced and open pores due to a volume reduction reaction are formed in one step; and molten silicon is infiltrated into the resulting porous body at a temperature of 1300° C. to 1800° C. in vacuum or in an inert atmosphere, whereby the silicon carbide-based heat-resistant, ultra-lightweight, porous structural material is produced.

    Abstract translation: 本发明提供一种具有与海绵状多孔体相同形状的碳化硅类耐热,超轻质多孔结构材料,并且还提供容易制造材料的方法。 在本发明的方法中,通过浸渍法将含硅粉末和树脂的浆料施加到海绵状多孔体的骨架上,使得多孔体的互连孔未被浆料堵塞; 所得多孔体在真空或惰性气氛中在900℃至1320℃的温度下碳化; 所得多孔体在真空或惰性气氛中在1320℃以上的温度下进行反应性烧结,由此生成对熔融硅具有高润湿性的碳化硅,并且由于体积减小反应而形成开孔 一步; 并且在真空或惰性气氛中,在1300℃至1800℃的温度下将熔融的硅渗透到所得的多孔体中,由此生产碳化硅基耐热超超轻质的多孔结构材料 。

    Flexible aerogel superinsulation and its manufacture
    79.
    发明授权
    Flexible aerogel superinsulation and its manufacture 失效
    柔性气凝胶超临界及其制造

    公开(公告)号:US6068882A

    公开(公告)日:2000-05-30

    申请号:US56413

    申请日:1998-04-07

    Applicant: Jaesoek Ryu

    Inventor: Jaesoek Ryu

    Abstract: A thermal insulation is produced by forming aerogels interstitially within a fiber matrix. The resulting composite structures have substantially no fiber--fiber contacts. The insulating product is made by impregnating the fiber matrix with an aerogel forming precursor and supercritically drying the aerogel precursor under pressure. Drying is conducted prior to aging of the aerogel precursor.

    Abstract translation: 通过在纤维基质中间隙地形成气凝胶来产生绝热。 所得到的复合结构基本上没有纤维 - 纤维接触。 绝缘产品通过用气凝胶形成前体浸渍纤维基质并在压力下超临界干燥气凝胶前体制备。 在气凝胶前体老化之前进行干燥。

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