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Spraying-free polyolefin composition with special aesthetic effect and a preparation method and application thereof

A special effect powder and polyolefin technology, applied in the field of polymer materials, can solve the problems of uneven distribution of special effect powder, unstable flow rate, poor compatibility, etc. compatibility effect

Active Publication Date: 2015-05-20
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By dispersing the special effect powder into the matrix resin, the special effect powder is connected to each other to form a continuous special effect film, which covers the base material and presents a special effect texture, although the special effect powder is directly added to the resin base. , can achieve a special glossy effect, but the compatibility between the matrix resin and the special effect powder is poor. Under the strong pressure and strong shear conditions of extrusion or injection molding, it is difficult for the special effect powder and the matrix resin material to achieve the same fluidity, especially It is a product with a complex structure. The special effect powder oriented along the flow direction occurs and the melt flow turns, the flow velocity is unstable, and the melt merges, etc., causing the special effect powder to be unevenly distributed in the melt and easy to form on the surface of the product. Defects such as flow marks and weld lines seriously prevent and limit the market promotion and application of this type of spray-free material

Method used

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  • Spraying-free polyolefin composition with special aesthetic effect and a preparation method and application thereof
  • Spraying-free polyolefin composition with special aesthetic effect and a preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0045] Example 1-6 Preparation of polymer-coated special effect powder microspheres:

[0046]According to the formula in Table 1, firstly, add anti-oxidation and corrosion inhibitor to the water-based polymer dispersion at room temperature, stir and disperse for 15 minutes to obtain a dispersion; while stirring, slowly add special effect powder, or water-based Special effect powder slurry, then add curing agent while stirring, and continue to stir for 30-120 minutes, so that the special effect powder is fully dispersed and covered by the dispersion liquid, and finally a composite dispersion liquid of polymer-coated special effect powder is obtained; The composite dispersion liquid is spray-dried to obtain polymer-coated special-effect powder microspheres. The temperature of the air inlet during the spray-drying process is 150-300° C., and the temperature of the air outlet is 50-130° C.

Embodiment 1

[0049] In embodiment 1: the aqueous polymer dispersion liquid is modified ethylene-vinyl acetate emulsion, and its solid content is 10wt%; Metal powder is the flake aluminum powder through surface treatment, and the content of Al element in the aluminum powder is 60wt%, Contains Zn and Sn at the same time; its particle size is 100μm; the anti-oxidation and corrosion inhibitor is pyrogallic acid; the curing agent is polyisocyanate.

Embodiment 2

[0050] In embodiment 2: aqueous polymer dispersion liquid is modified ethylene-vinyl acetate emulsion, and its solid content is 30wt%; Metal powder is the flaky copper powder through surface treatment, and the content of Cu element is 70wt% in the copper powder, Contains Zn and Sn at the same time; its particle size is 5μm; the anti-oxidation and corrosion inhibitor is benzotriazole; the curing agent is polycarbodiimide.

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Abstract

The invention discloses a spraying-free polyolefin composition with special aesthetic effect and a preparation method and application thereof. The composition comprises the following components: 70-98 wt% of polyolefin, 1-25wt% of polymer coated powder microspheres with special effect, 0-10 wt% of a compatibilizer, 0.1-1 wt% of an antioxidant and 0.1-0.5wt% of a processing aid. The powder with special effect coats with an aqueous polymer dispersion liquid to form microspheres which are then dispersed into polyolefin, so as to significantly improve the compatibility of the powder with special effect and polyolefin, and eliminate the flow mark formed on the surface of products in the extrusion or injection molding process and reduce the weld line. The prepared spraying-free polyolefin composition has aesthetic effects of obvious metal texture and pearly flashing, and greatly improves the scope of market application of spraying-free materials.

Description

Technical field [0001] The present invention is a high molecular material field, and it involves a spray -free polyolefin composition with special aesthetic effects and its preparation methods and applications. Background technique [0002] As people attach more and more attention to environmental problems, the products of special effects materials for spray -free special effects are gradually showing their competitiveness. The spray -free aesthetic resin can copy the colorful and colorful tones and pearly, flash effects, metal luster and metal luster, andSpecial effects such as texture, so as to meet the diversified and differentiated customer needs, and in the production process, it can truly realize energy conservation and emission reduction. It canEssence [0003] At present, the more common preparation method of spray -free resin is to add metal powder and pearl powder to the resin material with special colors and gloss.By dispersing special effect powder into the substrate ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08K9/10C08K3/08C08K3/36
CPCC08K3/08C08K7/00C08K9/02C08K9/10C08K2003/0806C08K2003/0812C08K2003/085C08K2003/0893C08L23/12C08L23/06
Inventor 宋晓辉陈平绪胡纲叶南飚孙雅杰高权星王大中
Owner KINGFA SCI & TECH CO LTD
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