新型无毒防锈颜料三聚磷酸二氢铝研究进展

介绍三聚磷酸二氢铝的性质、合成工艺及应用。采用湿法磷酸净化替代热法磷酸可降低成本,将成为今后此类防锈颜料的发展方向。特别提到昆明理工大学精细化工教研室,开展了肥料级磷酸一铵水溶液添加一定的净化剂,可使磷酸一铵水溶液达到合成三聚磷酸二氢铝的要求。该法称为磷酸一铵净化法,有望成为取代热法磷酸的理想方法。

Research progress of aluminum dihydrogen tripolyphosphate--a new type nontoxic antirust pigment

The properties, synthesis process and application of aluminium dihydrogen tripolyphosphate are presented. The substitute of purified wetprocess phosphoric acid for thermalprocess phosphoric acid is considered an advancement as lower cost. The FineChemical Team, Kunming University of Science and Technology, adds some purifying agents into the solution of fertilizergrade monoammonium phosphate, and makes it conform to the necessity of aluminium dihydrogen tripolyphosphate synthesis. The synthesis is promising to be an ideal approach replacing the traditional thermalprocess.