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High-gloss polypropylene material containing carbon black colorant and preparation method thereof

A polypropylene material and colorant technology, applied in the field of composite materials, can solve the problems of difficulty in dispersion, difficulty in dispersion, uneven unevenness, and achieve the effects of broad market application prospects and simple preparation methods.

Inactive Publication Date: 2010-05-12
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although partially modified high-gloss polypropylene can meet the high-gloss and color requirements of some products, the modified polypropylene with carbon black additives still cannot meet the needs of customers. The main problems are as follows: 1) Due to the particle size of carbon black Between 10 and 500nm, the particles are spherical, and multiple spherical particles gather together to form aggregates, which is difficult to disperse in polypropylene; 2) Due to the strong adsorption of carbon black, it is easy to adsorb together with mineral powder , it is difficult to disperse in polypropylene, resulting in uneven surface of modified polypropylene products, powder clusters dispersed with carbon black and mineral powder, affecting the gloss of the product surface; 3) In twin-screw granulation, inappropriate process The powder is compacted, and the resin, mineral powder, carbon black and various additives cannot be mixed uniformly
[0003] Although there are related patent technical reports on high-gloss polypropylene in the prior art, for example: CN00117199.2 discloses a high-gloss anti-aging polypropylene composite material for household appliances, and CN200510010539.6 discloses a high-gloss low-shrinkage nano-polypropylene Propylene modified compound and its preparation method, CN200610027888.3 discloses a high-gloss impact-resistant filling modified polypropylene and its preparation method and application, CN200610029852.9 discloses a high-gloss low-surface precipitation flame-retardant polypropylene compound and its preparation method, CN200810039829.7 has disclosed a heat-resistant high-gloss reinforced polypropylene and its preparation method, etc., but the above-mentioned prior art does not disclose the high-gloss polypropylene material and its Research report on preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The high-gloss polypropylene material containing carbon black coloring agent of the present embodiment, its composition and the weight percent of each composition are as follows:

[0035] Granular homopolypropylene 55%

[0036] Homopolymerized polypropylene powder 18%

[0037] Barium Sulfate 13%

[0038] Talc 12%

[0039] Carbon black 0.5%

[0040] Lubricant - Calcium Stearate 0.5%

[0041] White mineral oil 0.6%

[0042] Phthalocyanine blue powder 0.4%

[0043] The preparation method of the high-gloss polypropylene material containing carbon black coloring agent of the present embodiment is as follows:

[0044] A) Put carbon black, phthalocyanine blue powder and lubricant-calcium stearate in a sealed plastic bag according to the proportion, and knead them by hand for later use;

[0045] B) First, mix granular homopolypropylene, homopolypropylene powder and white mineral oil in a high-speed mixer at 800rpm for 3 to 5 seconds according to the proportion, and then ...

Embodiment 2

[0050] The high-gloss polypropylene material containing carbon black coloring agent of the present embodiment, its composition and the weight percent of each composition are as follows:

[0051] Granular homopolypropylene 59%

[0052] Homopolypropylene powder 25%

[0053] Barium Sulfate 15%

[0054] Carbon black 0.3%

[0055] Lubricant - Zinc Stearate 0.3%

[0056] White mineral oil 0.4%

[0057] The preparation method of the high-gloss polypropylene material containing carbon black coloring agent of the present embodiment is as follows:

[0058] A) Carbon black and lubricant-zinc stearate are mixed in a powder machine according to the proportion for 1 to 2 minutes for later use;

[0059] B) First, mix granular homopolypropylene, homopolypropylene powder and white mineral oil in a high-speed mixer at 800rpm for 3 to 5 seconds according to the proportion, and then add the mixed material prepared in step A) at a stirring speed of 800rpm Continue mixing for 5-10 seconds, and ...

Embodiment 3

[0064] The high-gloss polypropylene material containing carbon black coloring agent of the present embodiment, its composition and the weight percent of each composition are as follows:

[0065] Granular Homopolypropylene 80%

[0066] Homopolypropylene powder 10%

[0067] Calcium Carbonate 7%

[0068] Carbon black 1%

[0069] Lubricant - Calcium Stearate 0.1%

[0070] White mineral oil 0.1%

[0071] Nucleating agent 1.8%

[0072] The preparation method of the high-gloss polypropylene material containing carbon black coloring agent of the present embodiment is as follows:

[0073] A) Mix the carbon black and the lubricant-calcium stearate in the powder machine according to the proportion for 1-2 minutes for later use;

[0074] B) First, mix granular homopolypropylene, homopolypropylene powder and white mineral oil in a high-speed mixer at 800rpm for 3 to 5 seconds, then add the mixed material and nucleating agent prepared in step A) at 800rpm Continue mixing for 5-10 sec...

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Abstract

The invention discloses a high-gloss polypropylene material containing carbon black colorant which is formed by processing granular homo-polypropylene, homo-polypropylene powder, an inorganic filler, carbon black, a lubricant, white mineral oil and other auxiliary agents, wherein the granular homo-polypropylene is granulated homo-polypropylene, the homo-polypropylene powder is un-granulated homo-polypropylene, and the inorganic filler is one of barium sulfate, calcium carbonate and French chalk, or a mixture of more than one type thereof. The preparation method comprises the following steps: firstly, pre-dispersing the carbon black, then pre-mixing all components, and finally utilizing a double-screw extruder for conducting extrusion granulation at temperature of 170-230 DEG C. The invention resolves the problem that the modified polypropylene added with the carbon black colorant can not meet the requirements of household electrical appliances on appearance gloss and color, and realizes uniform mixing of the carbon black and all components to the highest degree; and the surface glossiness of the prepared high-gloss polypropylene material containing the carbon black colorant is up to 85.

Description

technical field [0001] The present invention relates to a high-gloss polypropylene material containing carbon black colorant and a preparation method thereof, in particular to a high-gloss polypropylene material added with carbon black additives for making product appearance parts and its preparation The method belongs to the technical field of composite materials. Background technique [0002] Polypropylene (PP) has very good physical processing properties and low cost. It can be modified by adding different additives to obtain excellent properties. It has been used in more and more home appliances. At present, the appearance of most home appliances requires good gloss and specific colors. Carbon black has strong coloring ability, and the whiteness of modified polypropylene can be adjusted by adding different amounts of carbon black, so carbon black is an essential colorant for modified polypropylene for household appliances with color requirements; because To meet the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/04C08K3/30C08K3/26C08K3/34C08K5/098C08K5/101
Inventor 杜赏夏建盟何威杨泽
Owner SHANGHAI KINGFA SCI & TECH
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