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Water-based paint for metal color plate surface and preparation method of water-based paint

A technology of water-based paint and color steel plate, applied in the direction of polyester paint, epoxy resin paint, coating, etc., can solve the problem of easy aging of metal color steel plate, achieve good photo-oxidative degradation reaction, photo-oxidative degradation reaction inhibition, and easy operation convenient effect

Active Publication Date: 2018-08-10
深圳雅联新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a water-based paint for the surface of metal color steel plate and its preparation method, the method is easy to operate, suitable for commercial production, and solves the problem of easy aging of metal color steel plate under strong light irradiation

Method used

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  • Water-based paint for metal color plate surface and preparation method of water-based paint
  • Water-based paint for metal color plate surface and preparation method of water-based paint
  • Water-based paint for metal color plate surface and preparation method of water-based paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of light-stable modifier: 1.5mol 2-picoline 2, 1.15mol boron trifluoride and 5ml of solvent dioxane were sequentially added to the reaction flask, the reaction flask was placed in an ice bath, and slowly stirred while stirring Add 1 mol of 3-acetylpyridine, react for 2 hours, remove the solvent by evaporation under reduced pressure, put the crude product into ethanol for heating and dissolving, then cool to room temperature naturally, then place it in an environment of 6°C and quench to precipitate crystals, filter and depressurize Dry to obtain light yellow crystal intermediate 3, put intermediate 3 and catalyst nickel into the autoclave, feed hydrogen gas when heated to 66°C, continue to heat to 185°C, stop hydrogen flow after hydrogen pressure is 10MPa , heat preservation reaction 1h, filter the reaction solution, take the filtrate and carry out vacuum fractionation, collect the distillate to obtain the light stabilizer 4; the reaction formula is as follow...

Embodiment 2

[0028] A kind of preparation that is used for the water-based coating on the surface of metal color steel plate, specifically comprises the following steps:

[0029] S1, preparation of modified silicone resin

[0030] Put 50g of phenylsiloxane monomer and 30g of dimethylsiloxane monomer of silicone resin into a mixer for pre-mixing to obtain a mixture of silicone resin monomers; add polymerization solvent xylene into the reaction kettle , heated to 120g°C, and kept at this temperature, slowly added the silicone resin monomer mixture into the reaction kettle, kept at reflux for 2 hours, then added 10g of polyimide and 1.6g of diisopropyl peroxydicarbonate, and raised the temperature to 220g°C After heat preservation modification reaction for 1h, then lower the temperature to 140°C, add 10g of light-stable modifier and 2.4g of titanate coupling agent, heat preservation for secondary modification reaction for 40min, after the reaction, remove the polymerization solvent xylene, th...

Embodiment 3

[0033] A kind of preparation that is used for the water-based coating on the surface of metal color steel plate, specifically comprises the following steps:

[0034] S1, preparation of modified silicone resin

[0035] Put 60g of phenylsiloxane monomer and 27g of dimethylsiloxane monomer of silicone resin into a mixer for pre-mixing to obtain a mixture of silicone resin monomers; add polymerization solvent xylene into the reaction kettle , heated to 130°C, and kept at this temperature, slowly added the silicone resin monomer mixture into the reactor, kept at reflux for 2 hours, then added 8g of polyimide and 2.2g of diisopropyl peroxydicarbonate, and raised the temperature to 235°C After heat preservation modification reaction for 1h, then lower the temperature to 150°C, add 5g of light-stable modifier and 4.6g of titanate coupling agent, heat preservation for secondary modification reaction for 60min, after the reaction, remove the polymerization solvent xylene, the material ...

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Abstract

The invention discloses water-based paint for a metal color plate surface and a preparation method of the water-based paint. The paint is prepared from the following raw materials by weight percent: 50 to 70 percent of modified organic silicon resin, 5 to 10 percent of epoxy resin, 5 to 10 percent of alkyd resin, 3 to 8 percent of aliphatic diisocyanate, 2 to 5 percent of isooctyl p-methoxycinnamate, 5 to 10 percent of mica powder, 0.5 to 2 percent of antioxidant, 2 to 4 percent of film forming additive, 0.5 to 1.2 percent of zinc stearate, and 10 to 15 percent of glycerol. The method is convenient in operation and suitable for commercialized production; the prepared light stable modifier contains two piperidine rings, the energy of the prepared light stable modifier for capturing the freeradicals and transferring the excited-state molecules is higher than that of the ordinary light stabilizer; and the prepared light stable modifier is easy to graft the organic silicone resin and canbe polymerized to generate the stable modified organic silicon resin, no additional light stabilizer is needed, and the non-uniform phenomenon of the paint is avoided.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based coating on the surface of a metal color steel plate and a preparation method thereof. Background technique [0002] Metal color steel plate, also known as color-coated plate, also known as color plate or pre-coated plate, is a composite material with organic coating. It is based on cold-rolled steel plate and galvanized steel plate. , cleaning, chemical conversion treatment), coating in a continuous method (roller coating method), baked and cooled products. Because of its good decoration, energy saving and environmental protection, easy forming, and low cost, its application has gradually expanded from the construction field to the home appliance field in recent years, and it is often used in TV sets, refrigerator back panels, etc. [0003] In areas with high humidity and high temperature, especially under high-intensity outdoor sunlight, some color-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/10C09D163/00C09D167/08C09D7/61C09D7/63
CPCC08L2205/03C09D7/61C09D7/63C09D183/10C08L63/00C08L67/08C08K13/02C08K3/34C08K5/098C08K5/053
Inventor 刘奕君何文霞陈晓玲
Owner 深圳雅联新材料有限公司
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