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Water-based environmentally-friendly coating and preparation process thereof

A preparation process and technology of environmentally friendly coatings, applied in the field of coatings, can solve problems such as non-wear resistance, poor adhesion, and large surface tension

Inactive Publication Date: 2019-05-07
戚江浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current water-based coatings generally have defects such as soft coating, non-wear resistance, and poor adhesion. Moreover, water is very different from organic solvents, with high surface tension, high vaporization temperature, and difficult wetting. Not easy to volatilize, poor corrosion resistance, difficult to meet the coating requirements in many fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation technology of water-based environment-friendly paint, comprises steps:

[0031] (1) Polydimethylsiloxane, maleic anhydride, trimellitic acid, trimethylolpropane, coconut oil, tetrabutyl titanate and emulsifier in a mass ratio of 5:1:1:1:4: 0.01:0.1 Stir and disperse after mixing to obtain a pre-emulsion;

[0032] (2) Add the pre-emulsion to the first part of water, then add ammonium persulfate, heat to 200°C, and stir to react;

[0033] (3) Cool naturally to 35°C, add ethyl orthosilicate, dibutyltin dilaurate catalyst, 3-(methacryloyloxy)propyltrimethoxysilane while stirring, and react with stirring to obtain an intermediate product;

[0034] (4) Add dodecyltrimethylammonium bromide to the second part of water, stir to dissolve, then add polymethyl methacrylate, ethylene-acrylic acid copolymer, butyl acrylate, hydroxyethyl acrylate, mix and grind, Then pour into the intermediate product obtained in step (3), stir and mix to obtain component A;

...

Embodiment 2

[0046] A kind of preparation technology of water-based environment-friendly paint, comprises steps:

[0047] (1) The mass ratio of polydimethylsiloxane, maleic anhydride, trimellitic acid, trimethylolpropane, coconut oil, tetrabutyl titanate and emulsifier is 5:1: 1.5: 1.5: 5: 0.02: 0.2 Stir and disperse after mixing to obtain a pre-emulsion;

[0048] (2) Add the pre-emulsion to the first part of water, then add ammonium persulfate, heat to 220°C, and stir to react;

[0049](3) Naturally cool to 40°C, add ethyl orthosilicate, dibutyltin dilaurate catalyst, 3-(methacryloyloxy)propyltrimethoxysilane while stirring, and react with stirring to obtain an intermediate product;

[0050] (4) Add dodecyltrimethylammonium bromide to the second part of water, stir to dissolve, then add polymethyl methacrylate, ethylene-acrylic acid copolymer, butyl acrylate, hydroxyethyl acrylate, mix and grind, Then pour into the intermediate product obtained in step (3), stir and mix to obtain compon...

Embodiment 3

[0062] A kind of preparation technology of water-based environment-friendly paint, comprises steps:

[0063] (1) Polydimethylsiloxane, maleic anhydride, trimellitic acid, trimethylolpropane, coconut oil, tetrabutyl titanate and emulsifier in a mass ratio of 5:1:1: 1.5:4: 0.02:0.1 Stir and disperse after mixing to obtain a pre-emulsion;

[0064] (2) Add the pre-emulsion to the first part of water, then add ammonium persulfate, heat to 220°C, and stir to react;

[0065] (3) Cool naturally to 35°C, add ethyl orthosilicate, dibutyltin dilaurate catalyst, 3-(methacryloyloxy)propyltrimethoxysilane while stirring, and react with stirring to obtain an intermediate product;

[0066] (4) Add dodecyltrimethylammonium bromide to the second part of water, stir to dissolve, then add polymethyl methacrylate, ethylene-acrylic acid copolymer, butyl acrylate, hydroxyethyl acrylate, mix and grind, Then pour into the intermediate product obtained in step (3), stir and mix to obtain component A;...

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PUM

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Abstract

The invention provides a water-based environmentally-friendly coating and a preparation process thereof. The preparation process comprises the following steps: firstly mixing polydimethylsiloxane, maleic anhydride, trimellitic acid, trimethylolpropane, coconut oil, tetrabutyl titanate and an emulsifying agent to prepare pre-emulsified matter, in a water-based system, adding ammonium persulfate, and performing a reaction under heating to form alkyd resin; after natural cooling is finished, adding ethyl orthosilicate, a dibutyltin dilaurate catalyst and 3-(methacryloyloxy)propyltrimethoxysilane,and performing a reaction under stirring to obtain an intermediate product; in a water-based system in the presence of a surfactant, mixing polymethyl methacrylate, an ethylene-acrylic acid copolymer, butyl acrylate and hydroxyethyl acrylate, performing grinding, pouring the ground material into the intermediate product, and performing uniform mixing under stirring to obtain an A component; and performing uniform stirring on an accelerant and an initiator to obtain a B component. According to the coating and process provided by the invention, when the coating is used, the A component and theB component are mixed and stirred uniformly, the mixed material uniformly coats the surface of an object to be coated, and drying is performed at room temperature.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based environmental protection coating and a preparation process thereof. Background technique [0002] Coating is an important industry in the chemical industry. It is a kind of multifunctional engineering material and has a broad market space. Traditional solvent-based paints will release a large amount of carcinogenic organic compounds (VOC) during the volatilization process, which will greatly pollute the environment and cause irreversible damage to the human body. In recent years, with the improvement of national environmental awareness, the demand for environmentally friendly coatings is increasing. [0003] Powder coatings, solvent-free coatings, water-based coatings, etc. came into being under the background of this demand. Without exception, the organic solvents in the coatings are reduced, and the volatilization of organic carcinogens is reduced to achieve the...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D133/12C09D123/08C09D7/65C08G63/91C08G63/49
Inventor 戚江浩
Owner 戚江浩
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