前　言目前国内外大部分膨胀型防火涂料均以聚磷酸铵做膨胀剂,而国内聚磷酸铵的生产历史大约有十来年的时间,虽然目前生产的厂家有十几个,但就总体而言真正做到品质优且质量稳定的为数不多。了解聚磷酸铵的品质对防火涂料性能的影响,进而设法提高其品质,并保持质量稳定,对我国 Foreword At present, most of the intumescent fire-retardant coatings at home and abroad are made of ammonium polyphosphate as an expansive agent. However, the production history of domestic ammonium polyphosphate has a history of about ten years. Although there are more than a dozen manufacturers currently producing, it is overall true. There are few quality and stable quality. Understand the impact of ammonium polyphosphate quality on the performance of fire retardant coatings, and then seek to improve their quality and maintain a stable quality for our country