High-gloss black spraying-free polypropylene compound and preparation method thereof

A polypropylene, spray-free technology, applied in the field of modified plastics, to achieve high hardness, good weather resistance, and reduce the effect of carbon black agglomeration

Inactive Publication Date: 2022-05-03
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These materials are all added with metallic toner or pearlescent powder, showing metallic luster or pearlescent effect. In actual use, the colors are mainly silver and gray, and a small part is colored. However, there is no relevant research on black high-gloss polypropylene materials. Research on patents

Method used

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  • High-gloss black spraying-free polypropylene compound and preparation method thereof
  • High-gloss black spraying-free polypropylene compound and preparation method thereof
  • High-gloss black spraying-free polypropylene compound and preparation method thereof

Examples

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preparation example Construction

[0052] A preparation method of high-gloss black spray-free polypropylene composite, its raw material formula is as shown in Table 1, and the preparation method is:

[0053] 1) Add acetylene carbon black, toner, antioxidant, and ultraviolet absorber to the mixer for mixing; dissolve the wetting agent in absolute ethanol to prepare a mixed solution with a concentration of 10%, and then add it to the above mixture, Continue mixing at 80°C until absolute ethanol volatilizes, then add random copolymerized polypropylene and dispersant to mix evenly, then add to internal mixer or extruder for melt blending and granulation to obtain black masterbatch;

[0054] 2) Add polypropylene, random copolymerized polypropylene, antioxidant, auxiliary antioxidant, ultraviolet absorber, nucleating agent and the black masterbatch prepared in step 1 to the mixer and mix evenly. After mixing evenly, add to At the main feed port of the twin-screw extruder, high-rigidity polypropylene is separately add...

Embodiment 2

[0058] The raw material formula is shown in Table 1, and the embodiment of Example 2 is basically the same as that of Example 1, except that the processing temperature of the twin-screw extruder is 200°C, and the vacuum degree is -0.1MPa;

[0059] Described polypropylene is propylene homopolymer, and melt flow rate is 1.8g / 10min (230 ℃, 2.16kg);

Embodiment 3

[0061] The raw material formula is shown in Table 1, and the embodiment of Example 3 is basically the same as that of Example 1, except that the processing temperature of the twin-screw extruder is 230°C, and the degree of vacuum is -0.08MPa;

[0062] Described polypropylene is propylene homopolymer, and melt flow rate is 6g / 10min (230 ℃, 2.16kg);

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Abstract

The invention provides a highlight black spraying-free polypropylene compound, which comprises the following raw materials by weight: 50-80 parts of polypropylene; 10 to 20 parts of polypropylene random copolymer; 10 to 30 parts of high rigidity polypropylene; 0.1 to 0.5 part of an antioxidant; 0.1 to 0.5 part of an auxiliary antioxidant; 0.1 to 0.5 part of an ultraviolet light absorber; 0.2 to 0.6 part of a nucleating agent; 3-6 parts of black master batch; the highlight black spraying-free polypropylene compound can replace a polypropylene workpiece sprayed with black paint, is used for small workpieces in the automobile industry, and has the advantages of being high in glossiness, high in blackness, free of spraying, resistant to friction and high in glossiness retention rate.

Description

technical field [0001] The invention belongs to the technical field of modified plastics, in particular to a high-gloss black spray-free polypropylene compound and a preparation method thereof. Background technique [0002] Polypropylene has the advantages of low density, low price, excellent mechanical properties, and easy processing. It has been widely used in automotive interior and exterior materials. However, polypropylene materials have defects such as low hardness and easy scratches. They are mainly used in automotive materials. Both leather-grained and non-leather-grained parts are treated with spray paint. [0003] The painting process of polypropylene materials for automobiles not only increases the cost, but also causes relatively large pollution to the environment. Especially for some small parts, such as car bumper side guards, door trims, trailer covers, etc., the area is small and the structure is complex, the painting process is more difficult, the scrap rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/02C08K3/04C08K3/26C08K5/1575C08K5/00C08K5/20C08K5/3475C08K5/372C08K5/375C08K5/544
CPCC08L23/12C08L2201/08C08L2205/025C08L2205/03C08L2205/24C08L23/14C08K13/02C08K3/04C08K3/26C08K5/1575C08K5/0091C08K5/20C08K5/3475C08K5/372C08K5/375C08K5/544
Inventor 张春怀李晟王中林徐昌竹张栋玮张海洋李欣陶四平
Owner TIANJIN KINGFA NEW MATERIAL
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