Pearlescent pigment capable of being directly used for electrostatic powder spraying and preparation method of pearlescent pigment

A pearlescent pigment and electrostatic powder technology, which is applied in the direction of fibrous fillers and dyed polymer organic compounds, can solve the problems of no pearlescent effect, low resistance, poor brightness, etc., to ensure brightness and color, simplify the process, reduce cost effect

Active Publication Date: 2017-11-28
FUJIAN KUNCAI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN101270236B involves the preparation of a nano-polyaniline-silicon dioxide-titanium dioxide conductive pigment, which is coated with polyaniline on the surface of nano-titanium dioxide and silica sol to obtain a low-resistance conductive pigment, but does not have a pearlescent effect
These patents are all for the purpose of obtaining conductive mica. The obtained pearlescent pigments are all light-colored and have a conductivity below 100KΩ·cm, but the brightness is extremely poor, and they can only be used as conductive fillers, not pearlescent pigments with decorative effects. paint to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 200g of mica titanium pearlescent pigment KC103 (purchased from Fujian Kuncai Material Technology Co., Ltd.) with a particle size of 10-60 μm, place it in a 2L beaker, add 1600mL of deionized water, put it in a water bath, and Stir at 200-300rps, control the temperature to 20-25°C, add 1ml of pyrrole and 0.1g of 1,5-naphthalene disulfonic acid, stir and disperse for half an hour, weigh 3.24g of ammonium persulfate APS, and dissolve it in 200ml of water , dropwise into the pearlescent pigment suspension at a rate of 1ml / min, continue to stir for 1 hour after the dropwise addition, filter, wash and dry at 120°C to obtain PPy surface-treated mica titanium silver white pearlescent pigment.

Embodiment 2

[0027]Weigh 500g of synthetic mica titanium pearlescent pigment KC8705 (purchased from Fujian Kuncai Material Technology Co., Ltd.) with a particle size of 40-160 μm, place it in a 5L beaker, add 4000mL of deionized water, put it in a water bath, and use 200 Stir at -300rps, control the temperature in an ice bath between 0-10°C, adjust the pH of the solution between 3.0-4.0, weigh 6.32g of aniline and 0.5g of polyvinylpyrrolidone, stir and disperse for 30min, and weigh 22.8g of persulfuric acid Ammonium, diluted to 500ml, and dropped into the beaker of pearlescent pigment suspension at a rate of 1.6mL / min, reacted for 5 or 6 hours, filtered, washed, and the filter cake was dried at 110°C to obtain the golden iridescence coated on the surface of PAN Type synthetic mica titanium pearlescent pigment.

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Abstract

The invention relates to a pearlescent pigment capable of being directly used for electrostatic powder spraying and preparation method of pearlescent pigment. The method disclosed by the invention comprises the following step: coating a thin conductive polymer transparent layer, such as polyaniline (PAN), polypyrrole (PPy), polythiophene (PTh) and the like, on the surface of a pearlescent pigment prepared from flake base materials such as natural flake mica, flake synthetic mica, flaky alumina, flaky silicon oxide, sheet glass flakes and the like. Therefore, the matching problem of electrical conductivity of resins in a powder coating is ensured, the brightness and color of powder spraying are ensured, the pearlescent pigment binding step in the powder coating is reduced, the utilization rate of the pearlescent pigment is improved, and the process is simplified.

Description

technical field [0001] The invention relates to a pearlescent pigment directly used for powder spraying and a preparation method thereof, in particular to coating a layer of conductive polymer on the surface of the pearlescent pigment, such as polyaniline, polypyrrole and polythiophene. Background technique [0002] Powder coating is a new type of solvent-free, 100% solid powder coating. This type of powder coating is a new type of solvent-free product that does not contain toxicity, solvents, and volatile toxic substances, so it has no pollution, no fire, and no "three wastes" emissions. Requirements of environmental protection law; high utilization rate of raw materials, oversprayed powder can be recycled, and the highest utilization rate can even reach more than 99%; after pre-treatment of the coated object, one-time construction, without primer, can get sufficient thickness Coating film, easy to realize automatic operation, high production efficiency, can reduce costs; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/10
CPCC01P2004/84C09C1/0015C09C3/10C09C2200/102C09C2200/1029C09C2200/405C09C2200/406
Inventor 谢秉昆曹志成陈继威
Owner FUJIAN KUNCAI MATERIAL TECH
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