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Polyaspartic acid shielding varnish, and preparation method and application thereof

A technology of polyaspartum and varnish is applied to polyaspartum shielding varnish based on polyaspartum resin and its preparation, and the field of polyaspartum shielding varnish can achieve the effects of prolonging service life, excellent aging resistance and excellent aging resistance.

Inactive Publication Date: 2020-04-03
TIANJIN COLOROAD COATING & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no transparent varnish that can be used directly with the electrophoretic primer, and such products are still blank in the market

Method used

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  • Polyaspartic acid shielding varnish, and preparation method and application thereof

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Embodiment 1

[0070] A kind of polyaspartic shielding varnish, this varnish is made up of the raw material of following parts by weight:

[0071] Raw material ratio of the main agent:

[0072] Polyaspartic resin NH1420 75

[0073] Drier dibutyltin dilaurate 3

[0074] Defoamer SPX-35 0.5

[0075] UV absorber eversorb40 0.5

[0076] Leveling agent 360s 0.3

[0077] Thinner 20

[0078] Xylene 65

[0079] Butyl propionate 25

[0080] PMA (Propylene Glycol Methyl Ether Acetate) 5

[0081] Raw material ratio of hardener:

[0082] Polyisocyanate 75

[0083] Butyl propionate 25

[0084] Water absorption stabilizer OF 0.4

[0085] Preparation:

[0086] Preparation of polyaspartic shielding varnish:

[0087] Main agent: mix polyaspartic resin and some diluents evenly, add defoamer, ultraviolet absorber, leveling agent, drier in turn under stirring state, stir evenly, add diluent according to solid content to adjust solid content , filter package.

[0088] Hardener: mix polyisocyanate an...

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Abstract

The invention relates to a polyaspartic acid shielding varnish. The polyaspartic acid shielding varnish comprises, 40-45 parts of polyaspartic acid resin, 8-10 parts of high-purity zinc phosphate, 3-6parts of 2-butoxy ethanol, 0.5-1 part of a dispersing agent, 0.5-1 part of a water-based ultraviolet light absorber, 2-5 parts of iron oxide black, 1-2 parts of an anticorrosion additive, 2-5 parts of a medium pigment carbon black, 5-10 parts of wet sericite, 0.1-0.2 part of a thickening agent, 0.2-0.4 part of a defoaming agent, 20-30 parts of precipitated barium sulfate and 5-10 parts of deionized water. Introduction of waterborne modified epoxy ester resin is combined with the anticorrosion additive and the ultraviolet light absorber, so that the polyaspartic acid shielding varnish has goodanticorrosiove and weather-proof properties, good construction performance and excellent appearance. The reasonable combination of the dispersing agent, a leveling agent and the defoaming agent solves the contradiction between paint film sagging and leveling property. The varnish is suitable for being applied to the outer wall surfaces of various cast pipes in a coating manner to achieve the protection effect.

Description

technical field [0001] The invention belongs to the technical field of coatings and production techniques thereof, and relates to a polyaspartic shielding varnish of polyaspartic resin, more specifically a polyaspartic shielding varnish based on polyaspartic resin and a preparation method thereof. Background technique [0002] Electrophoretic coatings have very good anti-corrosion properties but poor aging resistance. In recent years, many companies have researched and launched weather-resistant electrophoretic coatings. However, after practical application, it is found that the anti-corrosion properties of the coating film are greatly reduced while the aging resistance is not greatly improved. This requires a matching coating to supplement the aging resistance of the coating film. Generally, color paint spraying needs to cover many parts of the workpiece, which requires corresponding personnel, materials, time, etc. to increase the manufacturing cost. Our company develops a...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08
CPCC09D5/08C09D175/02
Inventor 孟昭辉刘巍李宏森赵琳李伟
Owner TIANJIN COLOROAD COATING & CHEM
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