Organic polymer material and coating method thereof

A technology of organic polymers and coating methods, applied in the direction of surface coating liquid devices, coatings, powder coatings, etc., can solve the problems of unresolved electrical conductivity of plastics, difficulties in plastic processing and molding, and no decorative effects, etc., to achieve Various decorative effects, free adjustment of gloss, convenient electrostatic coating effect

Active Publication Date: 2019-12-17
FOSHAN YIKEJU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the powder coating in the comparison document is only used for the edges of plastic and cement boards, and cannot be used for all coating decorations, and has no decorative effect
Moreover, the powder coating is a pure epoxy resin system, which is easy to turn yellow and can only be used as a primer
Further, the comparative document does not solve the problem of electrical conductivity of plastics, but only uses the principle of high temperature preheating, not the principle of electrostatic adsorption, to spray the powder coating on the side of the heat-sensitive substrate plastic, so the powder coating efficiency is very low, only 20-30%
[0007] That is, when coating organic polymer materials, the existing technology cannot solve the problems of low efficiency, single decorative effect, environmental pollution, difficult plastic processing and molding, and affecting mechanical properties at the same time.

Method used

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  • Organic polymer material and coating method thereof
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Examples

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Embodiment example

[0080] As a preferred embodiment of the present invention, the raw materials of the ultra-low temperature powder coating include: polyester resin, epoxy resin and auxiliary agents, and the auxiliary agents include one or more of catalysts, anti-sticking agents and defoamers .

[0081] Wherein, the main material of the ultra-low temperature powder coating is the main polyester resin containing carboxyl groups, the glass transition temperature is 40-60°C, the acid value is 10-75, and the curing temperature is 90-130°C. Then use low-temperature curing (80-90°C) liquid or low-viscosity solid epoxy resin, and use high-efficiency catalysts to perform low-temperature ring-opening reaction on epoxy resin, add a new type of defoamer for degassing and defoaming, and add a new type of anti-foaming agent. Adhesive, to better solve the problem of adhesion and agglomeration.

[0082] The catalyst can specifically be selected from 2-methylimidazole, 2-phenylimidazoline, tertiary amine and i...

Embodiment 1

[0110] Preparation of ultra-low temperature powder coatings, including:

[0111] (A) 40 parts of polyester resin and auxiliary materials are mixed and extruded into sheets to obtain polyester flakes;

[0112] (B) 40 parts of epoxy resin and auxiliary material are mixed and extruded into a sheet to obtain an epoxy resin sheet;

[0113] (C) mixing the polyester flakes of step (A) with the epoxy resin flakes of step (B) in a ratio of 1:1, and pulverizing them to 25-60 μm with a disc jet mill to obtain the first powder;

[0114] (D) the first powder in step (C) is airflowed to 3-35 μm in a supersonic fluidized bed, and the second powder of 5-25 μm is obtained after classification;

[0115] (E) Grinding 5 parts of the auxiliary agent to 1-9 μm with a supersonic fluidized bed airflow to obtain a third powder, wherein the auxiliary agent includes 2 parts of catalyst, 1 part of anti-sticking agent and 2 parts of defoamer, Described catalyzer is 2-methylimidazole, defoamer is polyeth...

Embodiment 2

[0118] Preparation of ultra-low temperature powder coatings, including:

[0119] (A) 40 parts of polyester resin and auxiliary materials are mixed and extruded into sheets to obtain polyester flakes;

[0120] (B) 60 parts of epoxy resin and auxiliary material are mixed and extruded into a sheet to obtain an epoxy resin sheet;

[0121] (C) mixing the polyester flakes in step (A) with the epoxy resin flakes in step (B) in a ratio of 2:3, and pulverizing them to 25-60 μm with a disc jet mill to obtain the first powder;

[0122] (D) the first powder in step (C) is airflowed to 3-35 μm in a supersonic fluidized bed, and the second powder of 5-25 μm is obtained after classification;

[0123] (E) 8 parts of auxiliary agents are pulverized to 1-9 μm by supersonic fluidized bed air flow to obtain a third powder, wherein the auxiliary agents include 4 parts of catalyst, 2 parts of anti-sticking agent and 2 parts of defoamer, The catalyst is 2-phenylimidazoline, the defoamer is a fluor...

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Abstract

The invention discloses a coating method of an organic polymer material, and the method comprises the following steps:(1) selecting the organic polymer material and carrying out electric conduction treatment on the organic polymer material; (2) carrying out preheating treatment on the organic polymer material subjected to the electric conduction treatment; (3) coating the preheated organic polymermaterial with a powder coating for one or more times to form a powder coating layer; (4) carrying out curing treatment on the powder coating layer on the surface of the organic polymer material; and(5) carrying out quality inspection and packaging on the cured organic polymer material to obtain a finished product. Correspondingly, the invention also provides the organic polymer material preparedby the coating. The method is simple, controllable in process, high in efficiency, environmentally friendly, capable of saving energy and rich and diverse in decoration effect.

Description

technical field [0001] The invention relates to the technical field of organic polymer materials, in particular to an organic polymer material and a coating method thereof. Background technique [0002] Organic polymer materials refer to polymer materials that have fluidity and plasticity under certain conditions, and can be processed into shapes. When returning to normal conditions, they can still maintain the shape of the processed polymer materials, commonly known as plastics. Plastics are further divided into thermoplastics and thermosetting plastics. The plastic defined in this patent is an organic polymer composite material with glass transition temperature or melting point ≥ 90°C, which is widely used in architectural decoration, household appliances, automobiles, high-speed rail, electronic information, mobile communications and other fields. [0003] Because the plastic surface is relatively soft, the hand feeling is relatively poor, the weather resistance, abrasio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D167/00C09D163/00C09D5/03C09D7/61C09D5/24B05D7/02B05D5/12B05D7/24B05D1/06B05D3/00B05D5/06C08L101/00
CPCB05D1/06B05D3/002B05D5/061B05D5/12B05D7/02B05D7/24C08J7/042C08J2300/00C08J2463/00C08J2467/00C08K2003/2227C08K2003/265C08K2201/011C09D5/033C09D5/24C09D163/00C09D167/00C08L63/00C08K3/22C08K3/36C08L67/00C08K3/26
Inventor 伍明
Owner FOSHAN YIKEJU NEW MATERIAL CO LTD
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