Carrier-free weather-proof PP flame-retardant master batch as well as preparation method and application thereof

The invention provides a carrier-free weather-proof PP (polypropylene) flame-retardant master batch as well as a preparation method and application thereof, and belongs to the technical field of flame-retardant master batches. The synergistic flame-retardant effect of the microcapsule compound flame retardant and zirconium phosphate is combined, and meanwhile, the microcapsule compound flame retardant, the coupling agent, maleic anhydride grafted polypropylene and the weather-resistant agent are fully dispersed and coated by using the coating agent, so that uniform plasticization of the microcapsule compound flame retardant (high-concentration flame retardant) is realized, and extrusion granulation of the high-concentration flame retardant can be realized; and thus, the carrier-free PP flame-retardant masterbatch with the purity of 80% is obtained. In addition, the PP flame-retardant master batch provided by the invention has excellent weather resistance, and does not need a carrier PP. 本发明提供了一种无载体耐候PP阻燃母粒及其制