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Waterborne epoxy-modified polyester plate primer and preparation method thereof

A technology of modified polyester and water-based epoxy, used in polyester coatings, coatings, anti-corrosion coatings, etc., can solve the problems of lack of high mechanical properties, poor durability, and no self-cleaning properties, and achieve fullness Good, increase the adhesion, the effect of excellent mechanical properties

Inactive Publication Date: 2016-10-26
JIANGSU KEXIANG ANTICORROSIVE MATERIAL CO LTD
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Problems solved by technology

Chinese patent CN102002306A discloses a water-based pre-coated coil coating primer and a preparation method thereof. The water-based pre-coated coil coating primer prepared by the invention has excellent adhesion to metal substrates, excellent corrosion resistance and Chemical resistance, suitable for many purposes as a primer, but after it acts on the surface of the substrate, it does not have high mechanical properties, poor durability and no self-cleaning performance

Method used

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  • Waterborne epoxy-modified polyester plate primer and preparation method thereof
  • Waterborne epoxy-modified polyester plate primer and preparation method thereof

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Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with examples, which are not all listed.

[0023] A kind of water-based epoxy modified polyester board primer of the present invention, in parts by weight, consists of the components in Table 1:

[0024] Table 1

[0025]

[0026] The water-based epoxy-modified polyester used in embodiment 1-4# and comparative example 1-3# is prepared according to the following steps:

[0027] (1) Under the protection of nitrogen, add 20-25 parts of fatty acid and 8-10 parts of epoxy resin to the reaction kettle, raise the temperature to 120-125 ° C under stirring, add 0.05-0.1 parts of zinc oxide, continue stirring and raise the temperature to 180 ~185℃, esterification reaction 2.0~2.5h;

[0028] (2) Add 20-30 parts of isophthalic acid, 30-35 parts of pentaerythritol, and 3-5 parts of ethylene glycol ...

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Abstract

The invention relates to the field of waterborne coatings, specifically to a waterborne epoxy-modified polyester plate primer and a preparation method thereof. The waterborne epoxy-modified polyester plate primer is composed of the following components in parts by weight: 40 to 50 parts of waterborne epoxy-modified polyester, 10 to 20 parts of amino resin, 5 to 10 parts of fluorocarbon resin, 10 to 15 parts of a pigment slurry, 0.3 to 0.6 part of a defoaming agent, 0.5 to 3 parts of a thickening agent, 0.5 to 1 parts of a leveling agent, 0.1 to 0.5 part of a wetting agent, 0.2 to 0.8 part of a film-forming agent, 0.5 to 1 part of an anti-settling agent and 0.5 to 1 part of an antiseptic, with the balance being deionized water. The primer coating provided by the invention has the advantages of bright and gorgeous color, strong adhesion, excellent corrosion resistance, high mechanical performance, good durability, good self-cleaning performance, and applicability to requirements of different users.

Description

technical field [0001] The invention relates to the field of water-based coatings, in particular to a water-based epoxy-modified polyester sheet primer and a preparation method thereof. Background technique [0002] Color-coated sheet is a new type of sheet that applies an organic coating to the surface of steel or aluminum. It has the advantages of beautiful appearance, bright colors, convenient processing and molding, and can also reduce costs for users. Therefore, color-coated sheets are widely used in the industry. It is widely used in life and daily life, but the current color-coated sheets still need to be strengthened in terms of corrosion resistance, scratch resistance, and surface hardness. Under the action of external forces such as heavy pressure, friction, and scratching, the anti-corrosion layer of the color-coated sheet is easily scratched and damaged. These scratched places are easily corroded, and the weakness of this corrosion determines Extend the life of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/08C09D7/12C08G63/20
CPCC09D167/00C08G63/20C08L2205/035C09D5/08C09D7/65
Inventor 薛明郑国城金正武
Owner JIANGSU KEXIANG ANTICORROSIVE MATERIAL CO LTD
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