Novel aluminum hydroxide

New varieties of aluminum hydroxide
Development of new varieties, including: (1) increasing the surface area of ??the aluminum hydroxide particles and ultra fine micronized, water vapor partial pressure of the particle surface decreased, aluminum hydroxide can be improved heat resistance and mechanical properties of the flame-retardant effect significantly enhanced, there are tests showed the same distribution

Parties with an average particle size of the aluminum hydroxide 5μm, the oxygen index of 28, particle size <1μm, the oxygen index of 33. (2) thermal decomposition of aluminum hydroxide and the reaction temperature of the material, can be synthesized in between the thermal decomposition temperature of new varieties, such as aluminum hydroxide and sodium carbonate

Eutectic at 300 ~ 350 ℃ decomposition release water and carbon dioxide, hydrogen chloride and smoke have a stronger inhibitory effect is PVC, polyolefins excellent flame retardant. (3) reducing the insoluble aluminum hydroxide ions especially sodium oxide content, the mass fraction of less than 0.2%.
New varieties of improved surface
Generally aluminum hydroxide with a silane coupling agent, a titanate coupling agent and stearic acid (salt) such as a surface treatment, this has just started domestic, foreign countries have further special functions for a new aluminum hydroxide surface modifier development.
Inorganic synergist new varieties. A small amount of flame retardant synergist of aluminum hydroxide filler can significantly improve performance, such as inhibiting dripping, to improve the mechanical properties. And aluminum hydroxide can be a synergistic effect of a wide range of inorganic flame retardant synergist, mainly metal oxide

Zinc borate compound and a phosphorus compound (red phosphorus, phosphate), a silicon-based compound, a metal nitrate (nitrate, copper nitrate, silver), ammonium polyphosphate, etc..