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High temperature resistant powder coating and preparation method thereof

A technology of powder coating and high temperature resistance, applied in the field of chemical materials, can solve problems such as easy foaming and poor adhesion, and achieve the effect of improving adhesion, improving surface adhesion, and improving easy foaming

Active Publication Date: 2016-08-03
TAISHAN GUANG AN LIN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a high-temperature-resistant powder coating and a preparation method thereof, which overcomes the above-mentioned problems, reduces the curing temperature of traditional high-temperature-resistant powder coatings, and improves the easy foaming and poor adhesion of traditional high-temperature-resistant powder coatings And other problems, so that the coating yield is greatly improved, greatly reducing the cost of coating

Method used

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  • High temperature resistant powder coating and preparation method thereof

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Effect test

Embodiment 1

[0021] The high-temperature-resistant powder coating described in the embodiment of the present invention has the mass fractions of various components: 40% of modified silicone resin, 3% of curing agent, 40% of high-temperature filler, 2% of auxiliary agent, and 0.5% of high-temperature pigment .

[0022] Its preparation method is:

[0023] Step 1: Put 55% by mass fraction of xylene and 45% by mass fraction of silicone resin into the reaction kettle, start stirring and slowly heat to 90° C. with steam, and keep the constant temperature until the silicone resin is completely dissolved;

[0024] Step 2: Pour epoxy-containing silane coupling agent and xylene equivalent to 3.5% of the mass fraction of silicone resin into the head tank at a ratio of 1:1 for later use;

[0025] Step 3: After the silicone resin is completely dissolved in the reaction kettle, raise the temperature to 120°C, open the discharge valve of the high level tank, and drop the mixture containing epoxy silane ...

Embodiment 2

[0029] The high temperature resistant powder coating described in the embodiment of the present invention has the mass fractions of various components: 55% modified silicone resin, 2% curing agent, 48% high temperature filler, 1% additive, and 3% high temperature pigment.

[0030] Its preparation method is:

[0031] Step 1: Put 55% by mass fraction of xylene and 45% by mass fraction of silicone resin into the reaction kettle, start stirring and slowly heat to 90° C. with steam, and keep the constant temperature until the silicone resin is completely dissolved;

[0032] Step 2: Pour epoxy-containing silane coupling agent and xylene equivalent to 3.5% of the mass fraction of silicone resin into the head tank at a ratio of 1:1 for later use;

[0033] Step 3: After the silicone resin is completely dissolved in the reaction kettle, raise the temperature to 120°C, open the discharge valve of the high level tank, and drop the mixture containing epoxy silane coupling agent and xylene ...

Embodiment 3

[0037] The high-temperature-resistant powder coating described in the embodiment of the present invention has the mass fractions of various components: 50% modified silicone resin, 2.5% curing agent, 44% high-temperature filler, 1.5% additive, and 1.5% high-temperature pigment.

[0038] Its preparation method is:

[0039] Step 1: Put 55% by mass fraction of xylene and 45% by mass fraction of silicone resin into the reaction kettle, start stirring and slowly heat to 90° C. with steam, and keep the constant temperature until the silicone resin is completely dissolved;

[0040] Step 2: Pour epoxy-containing silane coupling agent and xylene equivalent to 3.5% of the mass fraction of silicone resin into the head tank at a ratio of 1:1 for later use;

[0041] Step 3: After the silicone resin is completely dissolved in the reaction kettle, raise the temperature to 120°C, open the discharge valve of the high level tank, and drop the mixture containing epoxy silane coupling agent and x...

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Abstract

The invention discloses a high temperature resisting powder paint and a preparation method thereof. The high temperature resisting powder paint comprises the components in percentage by weight as follows: 40-55% of modified organic silicon resin, 2-3% of curing agent, 40-48% of high temperature filler, 1-2% of assistant and 0.5-3% of high temperature pigment. The method mainly comprises the following steps of: modifying the organic silicon resin; mixing; and extruding and forming. The curing temperature of a conventional high temperature resisting powder paint is reduced, and the problems that conventional high temperature resisting powder paint is easy to bubble and poor in adhesive force and the like are solved, so that the coating yield is greatly improved and the coating cost is greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a high-temperature-resistant powder coating used for protective coating of high-temperature-resistant parts of metal products, which has the effect of high-temperature protection and decoration of metal products, and a preparation method thereof. Background technique [0002] In traditional high temperature resistant powder coatings, the hydroxyl value of the silicone resin is too high, and more water molecules are produced during curing, resulting in blistering and poor adhesion of the coating film. The low rate of finished products in the coating process is mainly due to the extremely high requirements for the pre-treatment of the workpiece due to the adhesion of the coating film. If you are not careful, it is easy to cause foaming and poor adhesion, resulting in extremely high coating costs. But now our company The developed new high-temperature-resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C09D7/12C09D5/03C08G77/38
Inventor 刘敏辉
Owner TAISHAN GUANG AN LIN CHEM CO LTD
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