Production and use of open cell rigid polyurethane foam
    2.
    发明授权
    Production and use of open cell rigid polyurethane foam 失效
    开孔硬质聚氨酯泡沫的生产和使用

    公开(公告)号:US5350777A

    公开(公告)日:1994-09-27

    申请号:US95214

    申请日:1993-07-23

    摘要: A method of producing an open cell rigid polyurethane foam which comprises reacting a polyol with a polymethylene polyphenyl polyisocyanate prepolymer with a monool exemplified by diethylene glycol monomethyl ether by use of a substitute such as 1,1-dichloro-1-fluoroethane or methylene chloride as a volatile blowing agent, or a mixture of the volatile blowing agent with water, for trichlorofluoromethane as a blowing agent in the presence of a catalyst, a foam stabilizer and a cell opening agent. The resultant open cell rigid polyurethane foam has a cell size of about 200-250 microns, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1-0.01 mmHg readily attainable to provide a vacuum heat insulating material of a high heat insulating performance.

    摘要翻译: 一种开孔硬质聚氨酯泡沫体的制造方法,其特征在于,将多元醇与多亚甲基多苯基聚异氰酸酯预聚物与二甘醇单甲醚例举的单醇通过使用1,1-二氯-1-氟乙烷或二氯甲烷等替代物反应, 挥发性发泡剂,挥发性发泡剂与水的混合物,三氯氟甲烷作为发泡剂,在催化剂存在下,泡沫稳定剂和开孔剂。 所得的开孔硬质聚氨酯泡沫具有约200-250微米的电池尺寸,并且适合用作例如真空绝热材料中的芯材料。 泡沫可以在0.1-0.01mmHg的真空下封闭在容器中,容易获得,以提供具有高绝热性能的真空绝热材料。

    Method for producing fire-resistant, thermally insulating board
    4.
    发明授权
    Method for producing fire-resistant, thermally insulating board 失效
    生产防火隔热板的方法

    公开(公告)号:US4405682A

    公开(公告)日:1983-09-20

    申请号:US243452

    申请日:1981-03-13

    摘要: A method for producing a fire-resistant, thermally insulating board, which comprises applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on(1) a facing material or sheet (D),(2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or(3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2),implementing the heating and pressing procedure for gluing the assembly, and laminating the resulting fire-resistant board (E) with rigid isocyanurate foam (F).The fire-resistant, thermally insulating board shows reduced fusing and combustion of the rigid isocyanurate foam (F) even when exposed to flame and posseses superior mechanical properties.

    摘要翻译: 一种耐火隔热板的制造方法,其特征在于,在表面材料或片材(A)的内表面上涂布液体水合硅酸钠(B),在所述涂布面上撒上粉状水合硅酸钠(C) 将所述铺展表面铺设在(1)面材或片材(D)上,(2)预先用液体水合硅酸钠(B)或(3)面向材料或片材施加的面层材料或片材(D) 具有粉末状水合硅酸钠(C)在(2)的施加表面上进一步扩展,实施用于胶合组件的加热和压制程序,并将所得到的耐火板(E)与刚性异氰脲酸酯泡沫(F)层压。 耐火绝热板即使在暴露于火焰下也能显示刚性异氰脲酸酯泡沫(F)的熔融和燃烧,并具有优异的机械性能。