首页>
外国专利>
MAGNESIA CEMENT SLURRY PROCESS FOR ITS MANUFACTURE HARDENED MAGNESIA CEMENT COMPOSITION AND COMPOSITE COMPRISING THE COMPOSITION
MAGNESIA CEMENT SLURRY PROCESS FOR ITS MANUFACTURE HARDENED MAGNESIA CEMENT COMPOSITION AND COMPOSITE COMPRISING THE COMPOSITION
展开▼
机译：镁质水泥浆的生产工艺及其硬化后的镁质水泥组合物和由该组合物组成的复合材料
展开▼
页面导航
摘要
著录项
相似文献
摘要
1486870 Coated products ASAHI KASEI KOGYO KK 21 May 1975 [22 May 1974 (2) 8 July 1974 (2) 29 July 1974 30 Oct 1974 29 Nov 1974 (2)] 21961/75 Heading B2E [Also in Divisions B5 and C3] A coated product comprises a coating layer of a magnesia cement composition which comprises, on a dry weight basis 42-94% active magnesia (obtained by heating a decomposable magnesium compound at 400-1000‹C) 5-38% magnesium sulphate, and 1-20% cellulose pulp or cellulose pulp/glass fibre mixture. The composition is preferably obtained by mixing active magnesia, cellulose pulp (optionally together with glass fibre). and an aqueous solution comprising at least 10% by weight magnesium sulphate. The solution may also comprise magnesium chloride, such that the weight ratio of sulphate to chloride is 2-10:1. The weight ratio of cellulose pulp to glass fibre, if present. is preferably 0.1-10:1. Other fibres may be included e.g. asbestos, carbon, cotton or rayon. The cement composition may be coated on, e.g., cellular concrete board, plywood. gypsum plaster board, plastic foam (e.g. foamed phenolic resin) or cemented excelsior board, and hardened in situ thereon. The magnesia cement layer is preferably of thickness 0.2-6mm.
展开▼
机译：1486870涂层产品ASAHI KASEI KOGYO KK 1975年5月21日[1974年5月22日（2）1974年7月8日（2）1974年7月29日1974年10月29日（2）] 21961/75标题B2E [也属于B5和C3分区] A涂覆的产品包括氧化镁水泥组合物的涂层，以干重计包含42-94％的活性氧化镁（通过在400-1000°C下加热可分解的镁化合物而获得）5-38％的硫酸镁和1- 20％纤维素纸浆或纤维素纸浆/玻璃纤维混合物。该组合物优选通过混合活性氧化镁，纤维素纸浆（任选地与玻璃纤维一起）而获得。包含至少10重量％的硫酸镁的水溶液。该溶液还可以包含氯化镁，使得硫酸盐与氯化物的重量比为2-10：1。纤维素纸浆与玻璃纤维的重量比（如果存在）。优选为0.1-10∶1。可以包括例如其他纤维。石棉，碳，棉或人造丝。水泥组合物可以涂覆在例如多孔混凝土板，胶合板上。石膏灰泥板，塑料泡沫塑料（例如泡沫酚醛树脂）或水泥硬石板，并在其上原位硬化。氧化镁水泥层的厚度优选为0.2-6mm。
展开▼
