Preparation method and application of microcapsule ammonium polyphosphate

The invention provides a preparation method and application of microcapsule ammonium polyphosphate, and relates to the field of macromolecular flame-retardant materials. The preparation method of the microcapsule ammonium polyphosphate mainly adopts light-cured resin as a capsule wall material to coat ammonium polyphosphate, the coating process is carried out in a high-speed stirrer, water does not need to be added, an ultraviolet irradiation source is additionally arranged in the high-speed stirrer, ammonium polyphosphate, the light-cured resin and a photoinitiator are stirred and mixed in the stirrer at a high speed, and the microcapsule ammonium polyphosphate is obtained. And the cured resin is adhered to the surface of the ammonium polyphosphate to form coating. According to the method, the defects in the prior art are overcome, wastewater is not generated in the whole production process, chain scission degradation of ammonium polyphosphate in a solid phase is avoided, formaldehyde is not generated, and t