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A kind of coating for galvanized sheet and preparation method thereof

A galvanized sheet and coating technology, applied in the field of paint, can solve problems such as wasting time, wasting energy, and low decorative performance, and achieve the effects of improving compatibility, saving energy, and improving storage stability

Active Publication Date: 2015-12-09
ANQING LINGHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, zinc chrome yellow epoxy primer was used. Zinc chrome yellow contains heavy metals, and construction requires two coats of primer and top coat, which wastes time and energy, and the decorative performance is not high, so it can no longer adapt to new technical requirements.

Method used

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  • A kind of coating for galvanized sheet and preparation method thereof
  • A kind of coating for galvanized sheet and preparation method thereof
  • A kind of coating for galvanized sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] One, embodiment 1 synthetic LH-60 resin

[0027]

[0028] (2) Process

[0029] ①. Make a mixture of monomer and 80% initiator in the formula amount for later use;

[0030] ②. Add epoxy resin, 90% formula xylene and butyl ester into the reaction kettle, raise the temperature to 90°C, keep stirring until the epoxy resin is completely dissolved, then start to drop the mixture prepared in ①, in 2- 2. After 6 hours of dripping the mixture, heat it at 95±2°C for 2 hours, then raise the temperature to 105±2°C and add the mixed solution of the remaining initiator (the initiator is dissolved in the mixed solvent), drop it in 1 hour, and keep it for more than 1 hour;

[0031] ③. When the measured conversion rate is above 98%, cool down, filter, and discharge to obtain the resin.

[0032] (3) Main indicators of LH-60 resin:

[0033]

[0034] 2. Finished paint

[0035] (1) Formula composition

[0036]

[0037] The mixed solvent is formed by mixing xylene, ethylene gly...

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Abstract

The invention provides paint for a galvanized sheet. The paint for the galvanized sheet is prepared by mixing 45-55 parts of LH-60 resin, 14-19 parts of isobutanol etherification amino resin, 20-25 parts of titanium dioxide R-215, 0.5-1 part of carbon black, 0.1-0.5 part of anti-settling agent, 0.1-0.3 part of wetting dispersant, 0.1-0.3 part of leveling agent, 1-2 parts of silane coupling agent Si69, 1-3 parts of butyl alcohol, 9-11 parts of modified filler and 8-14 parts of mixed diluent. A film of the paint for the galvanized sheet has excellent oil resistance, excellent water resistance and good adhesion, is an environment-friendly product and is especially applicable to protection of the galvanized sheet.

Description

Technical field: [0001] The invention relates to the field of paints, in particular to a paint for galvanized sheets and a preparation method thereof. Background technique: [0002] According to the user's requirements, it is necessary to spray paint on the galvanized sheet. Since the galvanized sheet is difficult to adhere, a series of galvanized sheet paints have been developed. In the past, zinc chrome yellow epoxy primer was used. Zinc chrome yellow contains heavy metals, and the construction requires two coats of primer and top coat, which wastes time and energy, and the decorative performance is not high, so it can no longer meet the new technical requirements. The acrylic resin modified by epoxy resin has multi-functional groups and multi-reaction points, and has good adhesion to the substrate. The paint is formed by using additives and isobutanol etherified melamine resin and baked at 130 degrees for 0.5 hours. The multi-functional groups , multi-reaction points, sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D161/32C09D7/12C08F283/10C08F220/18C08F220/28C08F220/14C08F220/06C08F212/08C08G59/17
Inventor 罗敏
Owner ANQING LINGHU PAINT
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