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.

Composite panels having two outer layers and a core

Abstract: Composite panels with high fire-proofing capacity have two outer layers and a core that features a core mixture containing aluminium hydroxide in compacted form, lightweight fillers, in some cases fine grained or splintery aluminium hydroxide, as desired magnesium hydroxide and polymer-based binding agents. The composite panels are suitable e.g. as facade panels for building constructions.

Fire retardant composite material of nano-aluminium hydroxide, clay and ethylene-vinyl acetate copolymer

Abstract: A composite flame-retarding material is proportionally prepared from the surface-modified aluminium hydroxide nanoparticles, organic montmorillonite nanoparticles, zinc borate, ethene-vinyl acetate copolymer, and maleic anhydride grafted ethene-vinyl acetate copolymer. Its advantages are high flame-retarding effect, mechanical performance, flowability and machinability.

Low-alkaline liquid accelerating agent and preparation method thereof

Abstract: The invention belongs to the technical field of tunnel construction, and relates to a low-alkaline liquid accelerating agent and a preparation method thereof. For the low-alkaline liquid accelerating agent, aluminium sulfate solution is neutralized with sodium aluminate solution to produce aluminium hydroxide collosol, and then aluminium sulfate and aluminium hydroxide collosol conduct polymerization reaction in an original solution system to produce polymerized aluminium sulfate, so that the accelerating agent solution has higher aluminium ion content and liquid stability; the low-alkaline liquid accelerating agent is prepared by aluminium sulfate, sodium aluminate and stabilizing agent; and the mass percentage of the components are as follows: 40 to 60 percent of aluminium sulfate, 6 to12 percent of sodium aluminate, 0 to 0.2 percent of stabilizing agent, and the balance of water. The invention has the following positive effects to sprayed concrete: initial set of common cement can be realized in five minutes and final set of the common cement can be realized in eight minutes under lower doping amount; the 1d strength of cement mortar can reach more than 12MPa, and the 28d compression strength ratio of the cement mortar is more than 100 percent; and the invention has good adaptability to cement of different varieties.

Methods for producing corundum at low temperatures

Abstract: The goal of this study is to produce corundum at low temperatures, in order to eliminate sintering processes during its production. Two methods were used. One involved the production of an aluminium hydroxide sol made from aluminium alcoholate, that was then seeded with various amounts of hematite crystals (α-Fe 2 O 3 ). The development of the conversion temperatures to corundum and the achievable α-Al 2 O 3 amounts related to the seed crystal amount was examined. The method of seeding aluminium chlorohydrate with α-Al 2 O 3 crystals and the subsequent calcination of the powder at temperature of ca. 700°C proved to be the more promising way to produce finely dispersed corundum powder.