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A kind of amino baking varnish with high temperature resistance and preparation method thereof

A kind of amino baking paint, high temperature resistance technology, used in coatings, polyester coatings and other directions, can solve problems such as the adhesion of water-based topcoats, achieve high paint film crosslinking density, good adhesion and chemical resistance, excellent performance Effect

Active Publication Date: 2017-05-31
LANGFANG NIPPON PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the updating of products, most of the wheel hub manufacturers have completed the replacement from oil-based varnishes to environmentally friendly powder varnishes. However, due to the baking temperature of powder varnishes at 180°C, most water-based topcoats are overbaked. Problems with rear adhesion

Method used

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  • A kind of amino baking varnish with high temperature resistance and preparation method thereof
  • A kind of amino baking varnish with high temperature resistance and preparation method thereof
  • A kind of amino baking varnish with high temperature resistance and preparation method thereof

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preparation example Construction

[0037] The present invention further provides the preparation method of the amino baking varnish for the water-based wheel with high temperature resistance, comprising the steps of:

[0038](1) Add polyester resin to reactor 1, then add neutralizer, add water to adjust viscosity after stirring, make Ph to 8.8-9.2, then add amino resin and continue stirring, add leveling agent and substrate moisturizer Add water after the wet agent to adjust the viscosity to 80-120 seconds (T4 cup), and keep stirring;

[0039] In the step 1, those skilled in the art can adjust the stirring time according to the actual situation. Preferably, the stirring time after adding the neutralizing agent is about 5 minutes, the stirring time after adding the amino resin is about 8-15 minutes, and the stirring time after adjusting the viscosity to 80-120 seconds is about 15-30 minutes.

[0040] (2) Add aluminum powder, wrapping solvent, and aluminum powder wrapping resin to reactor 2 in sequence, pour the...

Embodiment 1

[0049] Each raw material that adopts in embodiment 1 is as follows:

[0050] Polyester resin: HD-MB019, purchased from Beijing Jinhuili Chemical Products Co., Ltd.

[0051] Amino resin: LUWIPAL 066, purchased from BASF Company. SUMIMAL M-40ST, purchased from Dachang Resin Co., Ltd.

[0052] Aluminum powder coating resin: ACS-1212 and ACS-1213, both were purchased from Nippon Corporation of Japan.

[0053] Coating additives:

[0054] Neutralizing agent dimethylethanolamine was purchased from BASF Company.

[0055] The encapsulating solvents, isooctyl alcohol and ethylene glycol isooctyl ether, were purchased from BASF.

[0056] Leveling agent BYK 381 was purchased from BYK Company.

[0057] The substrate wetting agent TEGO WET 280 was purchased from Tego Coating Auxiliaries, Germany.

[0058] Anti-settling agent AQ 600 was purchased from Japanese DISPARLON Chemical Company.

[0059] Water-based color paste was purchased from Tianjin Huanqi Chemical Co., Ltd.

[0060] Th...

Embodiment 2

[0077] Each raw material that adopts in embodiment 2 is as follows:

[0078] Polyester resin: YG-SD842, purchased from Beijing Jinhuili Chemical Products Co., Ltd.

[0079] Amino resin: LUWIPAL 066, purchased from BASF Company. SUMIMAL M-40ST, purchased from Dachang Resin Co., Ltd.

[0080] Aluminum powder coating resin: ACS-1212 and ACS-1213, both were purchased from Nippon Corporation of Japan.

[0081] Coating additives:

[0082] Neutralizing agent dimethylethanolamine was purchased from BASF Company.

[0083] The encapsulating solvents, isooctyl alcohol and ethylene glycol isooctyl ether, were purchased from BASF.

[0084] Leveling agent BYK 381 was purchased from BYK Company.

[0085] The substrate wetting agent TEGO WET 280 was purchased from Tego Coating Auxiliaries, Germany.

[0086] Anti-settling agent AQ 600 was purchased from Japanese DISPARLON Chemical Company.

[0087] Water-based color paste was purchased from Tianjin Huanqi Chemical Co., Ltd.

[0088] Th...

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Abstract

The invention relates to the field of water-based paint preparation, in particular to a water-based amino baking varnish for wheels with high temperature resistance and its preparation method and application, which is matched with acrylic transparent powder varnish. The invention provides a water-based amino baking varnish for wheels with high temperature resistance. The raw materials include the following components in parts by weight: 21 to 25 parts of polyester resin; 5 to 10 parts of amino resin; 3 to 3 parts of aluminum powder 5 parts; 3-6 parts of coating solvent; 0.5-1 part of aluminum powder coating resin; 5-15 parts of color paste; 4-10 parts of coating additive; 30-40 parts of water. The high-temperature-resistant amino baking varnish of the present invention utilizes the numerous terminal hydroxyl functional groups in the polyester resin to achieve a high crosslinking density of the paint film, and its high crosslinking density of the paint film can effectively help the paint film to maintain good adhesion during high-temperature baking And chemical resistance, which solves the defect that most water-based paints are not resistant to high temperature baking.

Description

technical field [0001] The invention relates to the field of water-based paint preparation, in particular to a water-based amino baking varnish for wheels with high temperature resistance and its preparation method and application, which is matched with acrylic transparent powder varnish. Background technique [0002] With the improvement of the quality of human life, environmental protection regulations are becoming more and more stringent. Various environmental protection regulations have strict restrictions on the emission of volatile organic compounds (VOC), harmful solvents and various heavy metals. In the 1990s, actions to reduce solvent content and VOC in coatings were launched worldwide, which had a great impact on the industrial coatings and specialty coatings industries. Therefore, the development of green and environment-friendly coatings has become the development trend of the coatings industry. [0003] With the development of the automobile manufacturing indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D161/32C09D167/00C09D7/12
CPCC08L2201/08C09D7/20C09D7/62C09D7/63C09D167/00C08L61/32C08K5/17C08K2003/0812
Inventor 狄颖颖张浩齐见凯师广雨
Owner LANGFANG NIPPON PAINT