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Aid-containing thermosetting powder coating

A technology of thermosetting powder and additives, used in powder coatings, coatings, etc., can solve the problems of shrinkage, unevenness and unevenness of the coating film.

Active Publication Date: 2014-09-03
华威控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the thermosetting powder coatings in the above patents often suffer from shrinkage, unevenness, and roughness of the coating film during the coating process, and are absorbed by some low-boiling point by-products or pigments and fillers when the coating is solidified. The pinhole phenomenon caused by moisture, in addition, the toughness and surface hardness of the paint film in the above patent are not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment is a kind of thermosetting powder coating containing auxiliary agent, including resin, curing agent, pigment, filler and auxiliary agent, wherein, the content of said auxiliary agent is 5%, and said resin, curing agent, The sum of the content of pigments, fillers and additives is 95%. The additives include the first premix and the second premix. The first premix includes liquid leveling agent, fumed silica , the second premix includes benzoin, 701 wetting agent, hydrogenated castor oil, ethylene bisstearamide, polytetrafluoroethylene wax and butyral.

[0021] Specifically, the formulation of the additive is as follows,

[0022] 1. Auxiliary formula:

[0023] 403 liquid leveling agent 12

[0024] Fumed silica 8

[0025] Benzoin 12

[0026] 701 Wetting agent 12

[0027] Hydrogenated castor oil 20

[0028] Ethylene bis stearamide 6

[0029] PTFE wax 4

[0030] Butyral 6

[0031] Total 100 copies

[0032] Auxiliary synthesis manufacturing:

[0033...

Embodiment 2

[0058] In the present embodiment, the method for preparing the aforementioned thermosetting powder coating additives comprises the following steps:

[0059] 1) Add 8 parts of fumed silica to the high-speed dispersion mixer;

[0060] 2) Start the stirring paddle, then slowly pour in 12 parts of liquid leveling agent, and stir for about 10 minutes, so that the above-mentioned gas phase silica can completely absorb the liquid leveling agent and disperse evenly to obtain the first premix;

[0061] 3) Add the second premix and stir and homogenize for 5 minutes, so that the first premix and the second premix are completely stirred evenly;

[0062] 4) Shut down and discharge, and put the mixture formed by stirring the first premix and the second premix into the oven for drying;

[0063] 5) Grind the dried mixture through a micro-powder mill;

[0064] 6) Pack the auxiliary agent prepared after grinding.

[0065] Wherein, in the step 3), the process of adding the second premix inclu...

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PUM

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Abstract

The invention discloses an aid-containing thermosetting powder coating which comprises the following raw materials: resin, a curing agent, a pigment, fillers and aids, wherein the content of the aids is 4%, and the total content of the resin, the curing agent, the pigment, the fillers and the aids is 96%; the aids comprise a first premixture and a second premixture; the first premixture comprises a liquid leveling agent and fumed silica; the second premixture comprises benzoin, a 701 wetting agent, hydrogenated castor oil, ethylene bis stearamide, polytetrafluoroethylene wax and butyral.

Description

technical field [0001] The invention relates to the technical field of thermosetting powder coatings, in particular to a thermosetting powder coating containing additives. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. [0003] Thermosetting powder coating is a kind of powder coating. In the prior art, a thermosetting powder coating is disclosed in Chinese Invention Patent Publication No. 201310749823, which includes the following raw materials, which are expressed in weight percentage: poly Ester resin: 60-80%; Curing agent: 4-6%; Leveling agent: 0.8-1.2%; Wetting agent: 0.8-1.5%; Defoamer: 0.8-1.5%; UV absorber: 1- 6%; Tetrafluorowax: 0.8-1.5%; Titanium dioxide: 2-12%; Mica powder: 2-8%; Barium sulfate: 4-11%; Inorganic pi...

Claims

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Application Information

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IPC IPC(8): C09D5/03C09D201/00C09D7/12
Inventor 陈玉才
Owner 华威控股集团有限公司
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