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Attapulgite-containing water-based photocureable coating

A light-curing coating and attapulgite technology, applied in the coating field, can solve the problems of low hardness, wear resistance and poor gloss of the paint film, and achieve the effects of low cost, high adhesion and low equipment dependence.

Inactive Publication Date: 2021-10-12
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned existing problems and the huge demand of the market, the present invention provides a water-based photocurable coating, which solves the problems of low film hardness, poor wear resistance and poor gloss in the prior art of UV-curable water-based coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of water-based prepolymer: Add 10 parts of hyperbranched water-based polyurethane acrylic resin and 10 parts of 4-toluene isocyanate into a three-necked bottle with a stirring device, and add 50 ml of high boiling point solvent hexamethylphosphorous triamide , feed inert gas or nitrogen, stir and react for 1 hour at 60 degrees Celsius, then add 5 parts of piperidine-1,4-dihydroxypropanesulfonic acid and 5 parts of 2,3-dihydroxypropyl methacrylate at 50 The water-based prepolymer was prepared by reacting for 1 hour at 100°C.

[0021] (2) The above prepared water-based prepolymer, 5 parts of modified attapulgite, 1 part of tributyl phosphate, 1 part of sodium lauryl sulfate, phenyl bis(2,4,6-trimethyl Benzoyl) phosphorus oxide water dispersion and solvent-type 1-hydroxycyclohexyl phenyl ketone 0.5 part: 0.5 part are mixed and added as a photoinitiator, stirred at 35 degrees to allow it to react for 1 hour, and then add dipropylene glycol methyl ether 1 1 ...

Embodiment 2

[0024] (1) Preparation of water-based prepolymer: Add 15 parts of hyperbranched water-based polyurethane acrylic resin and 15 parts of 4-toluene isocyanate into a three-necked bottle with a stirring device, and add 50 ml of high boiling point solvent hexamethylphosphorous triamide , feed inert gas or nitrogen, stir and react for 1 hour at 65 degrees Celsius, then add 7 parts of piperidine-1,4-dihydroxypropanesulfonic acid and 7 parts of 2,3-dihydroxypropyl methacrylate at 52 The water-based prepolymer was prepared by reacting for 1 hour at 100°C.

[0025] (2) The above prepared water-based prepolymer, 7 parts of modified attapulgite, 2 parts of defoamer Deqian 3100, 2 parts of sodium lauryl sulfate, phenyl bis(2,4,6-trimethyl Benzoyl) phosphorus oxide aqueous dispersion and solvent-type 1-hydroxycyclohexyl phenyl ketone 1 part: 1 part are mixed and added as a photoinitiator, stirred at 35 degrees and allowed to react for 1 hour, and then added 2, 2, 4 - 2 parts of trimethyl-1...

Embodiment 3

[0028] (1) Preparation of water-based prepolymer: Add 20 parts of hyperbranched water-based polyurethane acrylic resin and 20 parts of 4-toluene isocyanate into a three-necked bottle with a stirring device, and add 50 ml of high boiling point solvent hexamethylphosphonotriamide , feed inert gas or nitrogen, stir and react for 1 hour at 65 degrees Celsius, then add 10 parts of piperidine-1,4-dihydroxypropanesulfonic acid and 10 parts of 2,3-dihydroxypropyl methacrylate at 52 The water-based prepolymer was prepared by reacting for 1 hour at 100°C.

[0029] (2) The water-based prepolymer prepared above, 10 parts of modified attapulgite, 3 parts of defoamer defoamer BYK088, 3 parts of alkyl diphenyl ether disulfonate, phenyl bis(2,4 , 6-trimethylbenzoyl) phosphorus oxide aqueous dispersion and solvent-type 1-hydroxycyclohexyl phenyl ketone 1.5 parts: 1.5 parts are mixed and added as a photoinitiator, stirred at 35 degrees to allow it to react for 1 hour, and then Add 3 parts of 3...

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Abstract

The invention provides an attapulgite-containing water-based photocureable coating which is prepared from the following components in parts by weight: 5-10 parts of modified attapulgite, 60-70 parts of a water-based prepolymer, 1-3 parts of a defoaming agent, 1-3 parts of a photoinitiator, 1-3 parts of a coalescing agent, 1-3 parts of an emulsifier, 1-3 parts of a wetting agent, 20-30 parts of deionized water and 0-30 parts of perfume. The water-based prepolymer is prepared from hyperbranched water-based polyurethane acrylic resin, 4-toluene isocyanate, piperidine-1, 4-dihydroxy propanesulfonic acid and 2, 3-dihydroxy propyl methacrylate in advance under a certain condition. Due to the special property structure of the attapulgite, the prepared coating has the advantages of great adhesive force, high hardness, friction resistance, acid and alkali corrosion resistance, good film-forming property, glossiness and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based photocurable coating containing attapulgite and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy, that is, the improvement of people's living standards, decorative materials represented by coatings have entered thousands of households. These decorative materials improve people's quality of life and bring people comfort and beauty. An invisible killer is polluting the environment we live in step by step, threatening our health. Paint, as the most common decorative material, has brought great harm to people's health. The development and use of safe and environmentally friendly paint has become an urgent problem to be solved in the industry. [0003] Many coatings are solvent-based coatings, which use volatile organic solvents during preparation and use. on the one hand. The large use of these organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/62C08G18/32C08G18/67B05D7/24B05D5/00B05D5/08B05D5/06
CPCC09D175/14C09D7/62C09D7/70C08G18/3857C08G18/675B05D7/24B05D5/00B05D5/08B05D5/061B05D2503/00B05D2601/20C08K9/00C08K7/26
Inventor 孟鸿张天刘振国
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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