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Spray-free PC composition with special aesthetic effect and its preparation method and application

A special effect powder, spray-free 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. metal texture effect

Active Publication Date: 2016-08-17
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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  • Spray-free PC composition with special aesthetic effect and its preparation method and application
  • Spray-free PC composition with special aesthetic effect and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0044] Example 1-6 Preparation of polymer-coated special effect powder microspheres:

[0045] 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

[0048]In Example 1: the water-based polymer dispersion is a water-based epoxy resin, and its solid content is 10wt%; the metal powder is a surface-treated flake aluminum powder, and the content of the Al element in the aluminum powder is 60wt%, containing Zn and Sn; its particle size is 100 μm; the anti-oxidant corrosion inhibitor is pyrogallic acid; the curing agent is dicyandiamide.

Embodiment 2

[0049] In Example 2: the water-based polymer dispersion is ASA emulsion, and its solid content is 60wt%; the metal powder is surface-treated flake copper powder, and the content of Cu element in the copper powder is 70wt%, containing Zn and Sn; The particle size is 5 μm; the antioxidant and corrosion inhibitor is benzotriazole; the curing agent is aziridine.

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Abstract

The invention discloses a spray-free PC composition with special aesthetic effects and its preparation method and application, comprising the following components: PC 70-98wt%; polymer-coated special effect powder microspheres 1-25wt%; compatible Antioxidant 0-10wt%; Antioxidant 0.1-1wt%; Processing aid 0.1-0.5wt%; The present invention can be obviously Improve the compatibility of special effect powder and PC, eliminate the flow mark formed on the surface of the product during extrusion or injection molding, and reduce the weld line. The aesthetic effect greatly improves the market application range of spray-free materials.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a spray-free PC composition with special aesthetic effects and its preparation method and application. Background technique [0002] As people pay more and more attention to environmental issues, spray-free special effect material products are gradually showing their competitiveness. Spray-free aesthetic resins can replicate the bright and colorful hues produced by spray paint, as well as pearlescent, flashing effects, metallic luster and Texture and other special effects, so as to meet diversified and differentiated customer needs, and can truly achieve energy saving and emission reduction in the production process, and can be widely used in handicrafts, toys, home appliances, automobiles, electronic products, sporting goods and office supplies and other fields . [0003] At present, the more common preparation method of spray-free resin is to add metal powder, pear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K9/10
CPCC08L69/00C08L2205/03C08L51/00C08L83/04C08K9/10C08K7/00C08K9/02C08K2003/0893C08K2003/0806
Inventor 宁方林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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