Modified plastic color masterbatch and preparation method thereof

Abstract

The invention discloses a modified plastic color masterbatch comprising the following components by weight: 63-69 parts of colored polyacrylamide resin, 21-24 parts of soybean oligopeptide, 12-15 parts of glutaraldehyde, 100 parts of water and 3-7 parts of a plasticizer. The carrier resin colored polyacrylamide resin of the color masterbatch is directly polymerized on the surface of a pigment filler to form a coating layer on the surface of the pigment filler, the coating layer is a polymer of maleic anhydride and incompletely saponified fat, the polymer contains an unsaturated olefin bond which is capable of undergoing polymerization and polymerizing with acrylamide and trifluoroethyl methacrylate, so that the surface of the pigment filler is grafted with amino groups and a large amount of fluorine, by glutaraldehyde cross-linking action between the amino groups and the soybean oligopeptide, the center of the prepared colored polyacrylamide resin is the pigment filler, and the pigmentfiller is directly and uniformly dispersed and coated in the carrier resin colored polyacrylamide resin, so that the prepared color masterbatch needs no dispersant to achieve even color distribution.

Description

technical field [0001] The invention belongs to the field of color masterbatch, and relates to a modified plastic color masterbatch and a preparation method thereof. Background technique [0002] The method of plastic coloring can be divided into body coloring method and coloring preparation method, but the dispersibility of the pigment is poor, and the coloring effect of the dust is not ideal. Therefore, the problem of pigment dispersibility is effectively solved by the masterbatch coloring method, in which the masterbatch is passed Add pigments, dispersants and additives to the carrier resin, and then prepare by melting and mixing, so that the prepared color masterbatch has the color of the pigment itself, but when the pigment is directly mixed with the carrier resin by mechanical stirring, although the dispersant is added, However, the mixed color material still cannot fully achieve a uniform effect. At the same time, the prepared color masterbatch itself has a certain di...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a modified plastic color masterbatch and its preparation method. The carrier resin of the color masterbatch, the colored polyacrylamide resin, is directly polymerized on the surface of the pigment and filler to form a coating on the surface of the pigment and filler. Coating layer, the coating layer is a polymer of maleic anhydride and incompletely saponified oil. The polymer contains unsaturated olefinic bonds, which can undergo polymerization reactions and polymerize with acrylamide and trifluoroethyl methacrylate, so that The surface of the pigments and fillers is grafted with amino groups and a large amount of fluorine elements. Through the cross-linking of glutaraldehyde between amino groups and soybean oligopeptides, the center of the prepared colored polyacrylamide resin is pigments and fillers, so that the pigments and fillers are directly and evenly dispersed Coated in the colored polyacrylamide resin of the carrier resin, so that the prepared masterbatch does not need a dispersant, which can achieve uniform color distribution, and solves the problem of directly mixing pigments and fillers with the carrier resin in the existing masterbatch. Although adding a dispersant, However, the mixed color material still cannot fully achieve a uniform effect. At the same time, the prepared color masterbatch itself has a certain dispersion performance in the plastic, which causes the problem of uneven coloring caused by uneven dispersion of the color masterbatch during coloring.

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