Polypropylene color masterbatch and preparation method thereof
A color masterbatch and polypropylene technology, applied in the field of plastic coloring, can solve the problems of uneven color, easy to produce flow lines, large color difference, etc., and achieve the effect of not easy to sink, overcome flow lines, and excellent dispersion
Inactive Publication Date: 2012-01-25
洪伟
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The invention discloses a polypropylene color masterbatch and a preparation method thereof. The polypropylene color masterbatch comprises the following components, by weight, 20-70% of polypropylene, 0.01-70% of a toner, 0-40% of a dispersant, 0.1-10% of a foaming agent, 0-10% of a crosslinking agent, 0-2% of a heat stabilizer, and 0-40% of a filler. The preparation method comprises the following steps: burdening and mixing above components according above proportions, carrying out melt blending with a double screw extruder or an internal mixer, and granulating and drying to prepare the color masterbatch. The shape of the color masterbatch is cylindrical, beaded, square or round tablet-like according to different granulating modes. The polypropylene color masterbatch provided in the invention which can be used in coloring products of polypropylene extrusion, spinning and injection molding has the advantages of excellent dispersibility and color stability.
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