Abstract：The one-step process for preparing magnesium hydroxide flame retardant with the material of purified magnesium sulfate. The results of the single factor experiments show that the optimal technological conditions should be as follows: the addition of composite surface-active agent is [preparation 5 g Mg(OH)2] 5~10 mL, reaction treatment time 3.0~4.0 h, and aging time more than 4.0 h. The measurement results of XRD indicate that the diffraction intensity of (101) direction is higher than (001) direction, a strain in (101) direction is less than 3′10-3 and the specific surface area (BET) is not more than 20 m2/g. The shape of particles is acicular with a diameter of 25~50 nm, the ratio of length-to-diameter is 8~10, and their dispersive is good. The product quality has reached to the standard of magnesium hydroxide flame retardant. In a word, with mild technological conditions and lower equipment cost, the one-step preparation process is simple and reasonable.
2007, Vol. 7 
