Environment-friendly high-glossiness colorful polypropylene material and manufacturing method thereof

Abstract

The invention relates to an environment-friendly high-glossiness colorful polypropylene material and a manufacturing method thereof. The polypropylene material comprises the following components in parts by weight: 10-80 parts of polypropylene resin, 1-70 parts of stuffing, 1-5 parts of dispersing agent EBS (ethylene bis stearamide), 0.1-5 parts of colorant, 1-10 parts of toughener POE (polyolefin elastomer), 0.1-0.3 part of antioxidant, 0.1-0.5 part of coupling agent and 0.1-20 parts of pearlescent pigment or metal powder. The manufacturing method comprises the following steps: grinding the stuffing and dispersing agent EBS in a high-speed grinder until the particle size is less than light wavelength, and dissolving the pearlescent pigment or metal powder in the coupling agent solution to implement oriented arrangement; premixing the polypropylene and micronized stuffing in a high-speed stirrer by a double screw extruder blending process; and adding into the double screw extruder, adding the oriented-coupled pearlescent pigment or metal powder through the front part of the double screw extruder, extruding, cooling, granulating and packaging.

Description

technical field [0001] The invention relates to the field of production and processing of plastics, in particular to an environment-friendly high-gloss bright-coloured polypropylene material and a manufacturing method thereof. Background technique [0002] Polypropylene resin can achieve special shimmering effects after adding mica pearlescent pigments, aluminum silver powder, copper powder, etc. Pearlescent pigments are generally composed of metal oxide thin layers covering mica, and are widely used in household appliances, automotive interior and exterior decoration, electronic products, In hardware tools, packaging materials and other fields, the painting process is reduced, the cost is saved, and it has broad market prospects. However, this effect has a defect in injection molding, which is that flow marks will appear at the gate, which will affect the appearance of the product. At the same time, some products will add a certain amount of filler material to ensure that ...

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Problems solved by technology

[0004] Chinese patent document CN102942742A, application date 2012.12.04, discloses a spray-free PP material with high gloss, metal or pearlescent glitter effect and its preparation method. It is composed of the following substances by weight percentage: PP97-99%, anti- Oxygen 168 0.1-0.3%, antioxidant 1010 0.1-0.5%, lubricating dispersant TAF 0.1-1%, effect pigment 0.3-1.5%, the PP material of this invention also has good high gloss and The advantages of pearlescent flashing effect, but the above-mentioned PP material is pure polypropylene material plus effect pigment, the product is easy to deform, the shrinkage rate of the product is high, and it is easy to produce deformation

[0005] At present, it is difficult for polypropylene materials with high gloss and pearlescent glittering effect to achieve low shrinkage and low deformation. Moreover, adding fillers to polypropylene materials to reduce the shrinkage of the material will affect the sparkling effect of the material, so , how to create a low-shrinkage, low-deformation, high-gloss, good flashing effect of environmentally friendly high-gloss colorful polypropylene material and its manufacturing method is an important research and development topic at present