Anti-static polyether ketone ketone powder coating and preparation method thereof

A polyetherketoneketone, powder coating technology, applied in polyether coatings, powder coatings, conductive coatings, etc., can solve the problems of high surface energy, high density, easy oxidation, etc. high effect

Active Publication Date: 2017-05-17
SHANDONG KAISHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When metals are used as conductive fillers, there are problems such as easy oxidation, high density, and easy sinking when the content is high; when metal oxides are used as conductive fillers, they have good conductivity, light color transparency, weather resistance and stability and Excellent properties such as low infrared emissivity, but because of its high surface energy, it is easy to condense in the process of coating preparation and storage, resulting in performance degradation; when carbon series is used as a conductive filler, a large amount is required to meet the antistatic requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 990g of polyetherketone ketone resin (melt index 80g / 10min, glass transition temperature 155°C) in a high-speed mixer equipped with a temperature control device and mix at a speed of 5000 rpm for 5 minutes, when the temperature rises to 175°C , quickly put in 10g of graphite / silver powder composite conductive agent with a median particle size D50 of 10 microns under nitrogen protection, continue to mix for 3 minutes, and then cool and discharge.

Embodiment 2

[0024] 994g of polyetherketone ketone resin (melt index 90g / 10min, glass transition temperature 153°C) was placed in a high-speed mixer equipped with a temperature control device and mixed at a speed of 6500 rpm for 5 minutes, and when the temperature rose to 173°C , under nitrogen protection, quickly put 6g of carbon black / silver powder composite conductive agent with a median particle size D50 of 15 microns and continue to mix for 4 minutes, then cool and discharge.

Embodiment 3

[0026] Place 998g of polyetherketone ketone resin (melt index 100g / 10min, glass transition temperature 150°C) in a high-speed mixer equipped with a temperature control device and mix at a speed of 8000 rpm for 5 minutes, when the temperature rises to 170°C , under nitrogen protection, quickly put 2g of carbon nanotube / silver powder composite conductive agent with a median particle size D50 of 20 microns and continue to mix for 5 minutes, then cool and discharge.

[0027] The coatings obtained in Examples 1-3 were electrostatically sprayed into coatings, and after testing, the coatings were at 10 3 The AC conductivity at Hz frequency is 7.10*10 -8 s / m, 6.05*10 -6 s / m and 3.25*10 -4 s / m; coating thickness 120 microns; according to GB / T1720-79(89) (paint film adhesion determination circle method), the adhesion level is 1; corrosion resistance test: 3.5% mass fraction of NaCl solution, 10% mass fraction of HCl solution and 10% mass fraction of NaOH solution were soaked in the a...

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Abstract

The invention relates to a polyether ketone ketone powder coating, and concretely relates to an anti-static polyether ketone ketone powder coating and a preparation method thereof. The coating is prepared from polyether ketone ketone resin and a conductive agent with the mass ratio being (99 to 99.8) : (1 to 0.2), wherein the conductive agent is a compound conductive material prepared by coating the surface of a carbon-series conductive filler with silver powder. The anti-static polyether ketone ketone powder coating provided by the invention adopts the compound conductive material as the conductive agent, so that the conductivity of the anti-static polyether ketone ketone powder coating is better than the conductivity of a carbon-series conductive agent which is independently used according to the same usage amount, and compared with a metal series, the density of the conductive agent is smaller, and the power utilization rate during electrostatic spraying is high; the anti-static polyether ketone ketone powder coating is prepared by adopting a hot bonding technology, the conductive agent and the base resin are dispersed uniformly and bonded tightly, and the recycled powder coating can be reutilized without the need for re-treating, so that the waste is reduced; an electrostatic spraying coating has the alternative conductivity being 7.10*10<8> to 3.25*10<4>s / m under the frequency of 103Hz, and has an anti-static function.

Description

technical field [0001] The invention relates to a polyetherketone ketone powder coating, in particular to an antistatic polyetherketone ketone powder coating and a preparation method thereof. Background technique [0002] In traditional antistatic coatings, high content of conductive fillers is usually required to meet the antistatic requirements. When the content of conductive fillers is high, it will seriously affect the fluidity, film formation, solvent resistance and weather resistance of the matrix resin when it is melted at high temperature. . Commonly used conductive fillers include metals, metal oxides and carbons. When metals are used as conductive fillers, there are problems such as easy oxidation, high density, and easy sinking when the content is high; when metal oxides are used as conductive fillers, they have good conductivity, light color transparency, weather resistance and stability. It has excellent properties such as low infrared emissivity, but due to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D171/10C09D5/24C09D5/03
Inventor 黄桂青李光辉王帅坡王荣海张聪聪韩楠楠薛居强孙庆民张泰铭张际亮王军
Owner SHANDONG KAISHENG NEW MATERIALS
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