Uvioresistant color masterbatches for polypropylene and preparation process of uvioresistant color masterbatches

Abstract

The invention discloses uvioresistant color masterbatches for polypropylene. The uvioresistant color masterbatches for polypropylene is prepared from the following raw materials in parts by weight: 60-85 parts of polypropylene, 10-15 parts of an ethylene-vinyl acetate copolymer, 7-11 parts of polyolefin elastomer, 3-5 parts of a stryenemaleic anhydride copolymer, 1.5-3 parts of zinc stearate, 1.7-2.5 parts of calcium stearate, 12-18 parts of pigment, 0.35-0.85 part of 2-(2'-hydroxyl-3', 5'-di-tert-phenyl)-5-benzotriazole chloride, 0.2-0.4 part of 2-hydroxyl-4-methoxybenzophenone, 0.2-0.6 partof 2-hydroxyl-4-n-octyloxybenzophenone, 1.5-2.5 parts of silver nitrate, 3.5-6 parts of bis (2,4-di-tert-butyl-phenyl) propionic acid] pentaetythritol diphosphite and 4-7 parts of 2,5 dimethyl-2,5 di-tert-butyl hexane peroxide. The uvioresistant color masterbatches for the polypropylene are good in uvioresistant effect; and the uvioresistant color masterbatches for the polypropylene and a coloredproduct are good in mechanical property, and the comprehensive using performance is good; and the antibacterial property, oxidation resistance, thermal stability and the like are good.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an anti-ultraviolet color masterbatch for polypropylene and a preparation process thereof. Background technique [0002] At present, the coloring methods for producing plastic products mainly include toner coloring, dyeing and pulling grain coloring and color masterbatch coloring. When directly using toner for coloring, coloring is very simple, but its biggest disadvantage is that the pigment will fly up during transportation, storage, weighing, and mixing, causing pollution, seriously affecting the environment, and prone to color spots and color differences that are difficult to control. Dyeing and pelletizing coloring is to mix plastic raw materials and toners and then use mixing equipment such as twin-screw extruders for melt blending and coloring. Compared with coloring with toners, the coloring effect of pelletizing has been greatly improved, but plastic needs After two hea...

AI Technical Summary

Problems solved by technology

[0004] However, the color masterbatch product used has a single structure and incomplete varieties, and there are still the following problems: 1. The anti-ultraviolet effect is poor; 2. The addition of various additives greatly reduces the tensile strength and impact strength of polypropylene; 3. 1. The compatibility between each component and the matrix material during use is poor, resulting in poor mechanical properties of itself and the colored product, and poor overall performance; 4. Poor antibacterial performance, easy oxidation, poor thermal stability, etc.

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