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Scratch-resistant high-gloss spraying-free polypropylene composition with aesthetic effect as well as preparation method and application of composition

A polypropylene composition and spray-free technology, applied in the field of modified plastics, can solve problems such as differences in scratch resistance, achieve excellent scratch resistance, solve anisotropy defects, and eliminate the effect of dark appearance

Inactive Publication Date: 2014-07-09
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN 102464857 A discloses an extrusion-grade aesthetic resin with metallic color effect and its preparation method, which uses molecular sieves to absorb metallic pigments on a suitable carrier, and overcomes the pigment precipitation caused by the continuous extrusion process and the molding process in the mold. and produce an aesthetic resin that is close to the effect of metal spray paint, but the patent does not address the difference in surface scratch resistance between spray-free and spray-painted products
At present, there is still no report on the polypropylene composition with scratch resistance and high-gloss spray-free aesthetic effect

Method used

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  • Scratch-resistant high-gloss spraying-free polypropylene composition with aesthetic effect as well as preparation method and application of composition
  • Scratch-resistant high-gloss spraying-free polypropylene composition with aesthetic effect as well as preparation method and application of composition
  • Scratch-resistant high-gloss spraying-free polypropylene composition with aesthetic effect as well as preparation method and application of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh each component according to the formula in Table 1, polypropylene, polyethylene, elastomer, scratch-resistant agent system, compatibilizer, brightener

[0040] Mix in the high mixer for 1~3 minutes, then add talcum powder and effect pigments and mix in the high mixer for 1~3 minutes at a speed of 1000~2000 rpm to obtain a premix; the premix is ​​extruded by a twin-screw Extrusion machine is melted and extruded, the temperature of each zone of the screw is 190~230°C, and vacuum granulated to produce polypropylene with scratch resistance and high gloss without spraying aesthetic effect.

[0041] Wherein, polypropylene is copolymerized polypropylene;

[0042] Polyethylene is high-density polyethylene HDPE;

[0043] The elastomer is ethylene-hexene copolymer;

[0044] The anti-scratch agent system is a mixture of 90% dimethyl polysiloxane and 10% glycidyl ether epoxy resin;

[0045] The compatibilizer is ethylene maleic anhydride copolymer;

[0046] The brightener i...

Embodiment 2

[0049] Each component is weighed according to the formula in Table 1, and its preparation method is the same as in Example 1.

[0050] Wherein, polypropylene is copolymerized polypropylene;

[0051] Polyethylene is low density polyethylene LDPE;

[0052] The elastomer is a mixture of 20% ethylene-propylene copolymer and 80% ethylene-octene copolymer;

[0053] The anti-scratch agent system is a mixture of 90% erucamide and 10% glycidyl ester epoxy resin;

[0054] The compatibilizer is propylene maleic anhydride copolymer;

[0055] The brightener is N,N-higher fatty acid group-ethylene bisstearamide;

[0056] The effect pigment is 50μm flake aluminum powder;

Embodiment 3

[0058] Each component is weighed according to the formula in Table 1, and its preparation method is the same as in Example 1.

[0059] Wherein, polypropylene is homopolypropylene;

[0060] Polyethylene is linear low density polyethylene LDPE;

[0061] The elastomer is a mixture of 50% ethylene-hexene copolymer and 50% ethylene-butene copolymer;

[0062] The anti-scratch agent system is a mixture of 90% oleic acid amide and 10% glycidyl amine epoxy resin;

[0063] The brightener is N,N-ethylenebisstearamide;

[0064] The effect pigments are 80 μm silica-coated flake aluminum powder and 50 μm silica-coated pearlescent pigment, the ratio of the two is 2:1.

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Abstract

The invention discloses a scratch-resistant high-gloss spraying-free polypropylene composition with aesthetic effect. The composition comprises the following components by weight percent: 40-94wt% of polypropylene, 0-15wt% of polyethylene, 0-20wt% of elastomer, 0-30wt% of filler, 1-6wt% of a scratch resistant agent system, 2-6wt% of effect pigment, 0.1-2wt% of brightener, and 0-4wt% of a compatilizer. Due to the synergistic effect of the scratch resistant agent system and the effect pigment, the spraying-free product is endowed with more excellent scratch resistance, thus having broader application prospect; in addition, the fluidity of the polypropylene composition is also affected, so that in injection molding or extruding, the change of the space position of the metal pigment of certain appearance shape along with melt flow is limited, the orientation of the metal pigment along with melt flow is reduced or even avoided, the defect of heterochromia of traditional spraying-free product is overcome, and the polypropylene composition has excellent metal texture, has no flow marks, and weakens and even eliminates dark appearance caused by a weld line.

Description

technical field [0001] The invention belongs to the field of modified plastics, in particular to a polypropylene composition, in particular to a polypropylene composition with scratch resistance and high-gloss spray-free aesthetic effects, and a preparation method and application thereof. Background technique [0002] Under the premise of ensuring that the physical and chemical properties of materials meet the application requirements, high requirements for product appearance are gradually put on the agenda. The traditional spraying treatment of parts is one of the means to meet the high requirements of appearance. Its rich color effects, including pearlescent effect, metallic texture, and flickering effect, are favored by consumers. This appearance effect is applied to electronics, electric tools, Commodities in industries such as home appliances, construction, and automobiles have shown unprecedented market competitiveness. However, with the promotion of the concept of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L23/08C08K9/10C08K7/00C08K3/08B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K2201/014C08L23/12C08L23/14C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L23/06C08L23/0815C08L83/04C08L63/00C08L23/0869C08K9/10C08K2003/0812C08K3/34C08L23/16C08L23/147C08K5/20C08K13/06C08L23/0853C08L83/08C08L23/30C08K2003/085B29B7/46B29B7/72B29B7/7461B29B9/06B29B9/12B29C48/04B29C48/40B29C48/911
Inventor 林洁龙杨波罗忠富袁绍彦丁超叶南飚
Owner KINGFA SCI & TECH CO LTD
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