The invention relates to the technical field of
polyester recycling and in particular relates to a yellowing-resisting, whitening and brightening master batch, a
polyester recycled material and a preparation method. The yellowing-resisting, whitening and brightening master batch is prepared from the following raw materials in parts by weight: 40 to 60 parts of matrix resin, 12 to 20 parts of composite microspheres, 6 to 12 parts of brightening agent, 1 to 7 parts of
antioxidant, 2 to 6 parts of light stabilizing agent and 3 to 7 parts of
ultraviolet absorbent and the like. The yellowing-resisting, whitening and brightening master batch provided by the invention takes
polyacrylonitrile which has better compatibility with
polyester resin and has certain whiteness as a carrier of nano
titanium dioxide and the problems that the nano
titanium dioxide is easy to
agglomerate and difficult to disperse and is not compatible with the matrix resin and the like are effectively solved; the nano
titanium dioxide has a size effect so that the polyester recycled material has the advantages of high whiteness, high gloss and the like; furthermore, the
polyacrylonitrile also can be used as reinforcing filler for reinforcing mechanical properties including tensile strength,
impact resistance and the like of the master batch.