发明名称 |
FOAMED FIREPROOFING COMPOSITION AND METHOD |
摘要 |
Disclosed are formulations adapted to form a foamed cementitious composition, the foamed cementitious composition itself, a method of forming a hydraulic binder foam, and a method of conveying and applying the resulting foam to a substrate. A pumpable cementitious slurry is formed, the slurry is mixed with a gas such as air, and is subjected to mechanically created turbulence to generate gas bubbles and create a foam, which preferably is stabilized by a foam stabilizing agent such as polyvinyl alcohol present in the slurry. The foam is then conveyed to a nozzle or other suitable dispense point from which it is applied, for example sprayed, preferably uniformly, onto a substrate to be coated. Prior to dispensing, a set accelerator is preferably injected, which causes the foam to gel, which in turn improves the hangability of the product on a substrate. The spray material adheres to the substrate and hardens to form an insulative coating on the substrate. Also disclosed are dry compositions comprising a hydratable cementitious binder, a mechanical foam stabilizing agent, and optionally a fibrous component, set retarder and air entraining agent, said composition providing, on the addition of water, gas and mechanical turbulence, a settable foam which is capable of spray application to a steel structural member and which, after spray application, is adherent to the member in the foamed state and after setting. The foam after setting, forms a fire and heat protective adherent coating on the member. |
申请公布号 |
WO03060018(A2) |
申请公布日期 |
2003.07.24 |
申请号 |
WO2003US00444 |
申请日期 |
2003.01.08 |
申请人 |
W.R. GRACE & CO.-CONN;WINDSOR TECHNOLOGIES LIMITED;HILTON, DENNIS, M.;MORGAN, MICHAEL, D.;SYMONS, MICHAEL, WINDSOR;SYMONS, TIMOTHY, MICHAEL |
发明人 |
HILTON, DENNIS, M.;MORGAN, MICHAEL, D.;SYMONS, MICHAEL, WINDSOR;SYMONS, TIMOTHY, MICHAEL |
分类号 |
C04B28/02;B28C5/06;B28C5/38;B28C7/16;B28C9/00;C04B28/14;C04B38/10;C08K3/30;C08L29/04;C09K3/10 |
主分类号 |
C04B28/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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