Topic
Aluminium hydroxide
About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.
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Patent•
21 Feb 2007
TL;DR: In this paper, a method for preparing flame-retardant-grde ultrafine aluminum oxide and increasing its original water-loss temperature of heat decomposition was proposed, which is suitable for mass production.
Abstract: This invention relates to a method for preparing flame-retardant-grde ultrafine aluminum oxide and increasing its original water-loss temperature of heat decomposition. The flame-retardant-grde ultrafine aluminum oxide is prepared from purified sodium aluminate solution by two or more stages. The crystal seeds for aluminum hydroxide ultrafine powder are prepared by reacting aluminum salt with ammonium salt, or reacting sodium aluminate solution with carbonate. The modifier for increasing the original water-loss temperature of ultrafine aluminum oxide heat decomposition is one of monoammonium phosphate, monoammonium phosphate/glycerol and monoammonium phosphate/oxalic acid. The modified aluminum oxide has the original water-loss temperature higher than 205 deg.C, thus can be used as a flame retardant. The method has simple process and is suitable for mass production.
7 citations
7 citations
Patent•
12 Nov 2008
TL;DR: In this paper, a method for removing impurity sodium oxalate in the sodium aluminate solution in the process of producing alumina in a Bayer process is presented, which reduces the influence of the oxalates on the production process, makes for the smoothness of the production in the Bayer process and has marked effect, simple process and good industrial application prospect.
Abstract: The method discloses a method for removing sodium oxalate in an industrial sodium aluminate solution, which is in particular suitable for removing impurity sodium oxalate in the sodium aluminate solution in the process of producing alumina in a Bayer process. The method comprises the following steps that: a decomposition mother solution is evaporated, condensed and cooled; aluminium hydroxide is added as an inoculating seed in order that a sodium oxalate crystallinesubstance in the decomposition mother solution is separated out and filtered; and the crystallinesubstance is separated, thereby removing the sodium oxalate in the sodium aluminate solution. Through the treatment by the method, the sodium oxalate concentration in the sodium aluminate solution is reduced; the method reduces the influence of the sodium oxalate on the production process, makes for the smoothness of the production in the Bayer process and has marked effect, simple process and good industrial application prospect.
7 citations
Patent•
27 Apr 2011
TL;DR: In this article, a method for preparing a silicone oil surface modified aluminium hydroxide flame retardant is described, which is characterized by taking silicone oil as a surface modifier, uniformly wrapping the surface of aluminium hydoxide powder with the silicone oil through physical adsorption under action of stirring and then adding a catalyst to impel the functional groups on the molecules of the modified silicon oil to react with the hydroxyl groups.
Abstract: The invention discloses a method for preparing a silicone oil surface modified aluminium hydroxide flame retardant, which is characterized by taking silicone oil as a surface modifier, uniformly wrapping the surface of aluminium hydroxide powder with the silicone oil through physical adsorption under action of stirring and then adding a catalyst to impel the functional groups on the molecules of the modified silicon oil to react with the hydroxyl groups on the surface of aluminium hydroxide powder so that the silicone oil is tightly wrapped on the surface of aluminium hydroxide powder throughchemical bonding, thus obtaining the modified aluminium hydroxide powder. The modified aluminium hydroxide prepared by the method has good thermal stability and high decomposition temperature, can improve the mechanical property and flame retardant property of the composite materials and has simple process.
7 citations
TL;DR: In this article, the effect of aluminium hydroxide on mechanical and fire retardant properties of GFRP- hybrid composites is investigated and three types of composites are fabricated using 0, 3 and 6 wt.% aluminium hydoxide powder with 50 wt% fibre, remaining matrix material.
7 citations