The invention discloses a microcapsule type
flame retardant and a preparation method thereof. The
flame retardant comprises the following components in parts by weight: triaryl
phosphate, a phenolic resin, aminomethyl phosphonic acid, a
coupling agent, a
flame-retardant synergist, cinnamate,
coumarin ester, nano
chitosan,
gelatin,
sodium alginate, a
natural fiber, and the like. The preparation method of the microcapsule type flame retardant comprises the following steps: (1) mixing the triaryl
phosphate and the phenolic resin according to a formula, stirring, further adding an anionic emulsifier, gulcomannan, the aminomethyl phosphonic acid, the
coupling agent, the flame-retardant synergist and an
antioxidant, continuously stirring, further adding a
natural fiber, stirring, and performingextrusion; (2) mixing the nano
chitosan, the
gelatin and the
sodium alginate, uniformly stirring, further adding
baicalin, the cinnamate and the
coumarin ester, and stirring; (3) mixing products of the step (1) and the step (2), thereby obtaining the microcapsule type flame retardant. The microcapsule type flame retardant disclosed by the invention is good in
thermal stability, good in flame retardancy and small in environment damage.