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Long-life polyurethane acrylic coating and preparation method thereof

A technology of urethane acrylic acid and urethane acrylate, applied in the field of long-life urethane acrylic coating and its preparation, can solve the problems of poor weather resistance, poor corrosion resistance and poor weather resistance of acrylic resin, and achieve enhanced corrosion resistance, good weather resistance and excellent acid corrosion resistance. performance effect

Pending Publication Date: 2022-06-03
无锡市造漆厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional acrylic polyurethane coatings can meet the basic requirements, they have the following disadvantages: using traditional acrylic resins with aromatic curing agents, the physical and chemical properties are acceptable, but the weather resistance is poor
[0003] In summary, in order to solve the characteristics of poor weather resistance and poor corrosion resistance of acrylic resin, a long-life polyurethane acrylic coating and its preparation method are provided

Method used

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  • Long-life polyurethane acrylic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: Preparation of modified graphene oxide:

[0030] Aniline-p-phenylenediamine copolymer:

[0031] 7 parts of aniline, 24 parts of p-phenylenediamine, 0.7 parts of octylphenol polyoxyethylene ether, 100 ml of hydrochloric acid, stirred for 25 minutes, 1.5 parts of ammonium persulfate was dissolved in hydrochloric acid, added dropwise to the reaction system with stirring, suction filtered, washed When the filtrate is neutral, remove impurities, wash, and dry at 42°C for 48h to obtain aniline-p-phenylenediamine copolymer.

[0032] Synthesis of Quinoline Acrylate:

[0033] Dissolve 50g of 8-hydroxyquinoline and 56ml of triethylamine in 300ml of anhydrous chloroform, mix well at -1°C, add 30ml of acryloyl chloride dropwise, react at -1°C for 11h under a nitrogen atmosphere, filter under vacuum, Wash, add sodium sulfate, filter, and purify to give quinoline acrylate.

[0034] Synthesis of 8-hydroxyquinoline-aniline-p-phenylenediamine copolymer:

[0035] Take 3g of a...

Embodiment 2

[0048] Step 1: Preparation of modified graphene oxide:

[0049] Aniline-p-phenylenediamine copolymer:

[0050] 5 parts of aniline, 15 parts of p-phenylenediamine, 0.6 part of octylphenol polyoxyethylene ether, 100 ml of hydrochloric acid, stirred for 20 minutes, 0.5 part of ammonium persulfate was dissolved in hydrochloric acid, added dropwise to the reaction system with stirring, suction filtered, Wash until the filtrate is neutral, remove impurities, wash, and dry at 40° C. for 46 hours to obtain aniline-p-phenylenediamine copolymer.

[0051] Synthesis of Quinoline Acrylate:

[0052] Dissolve 50g of 8-hydroxyquinoline and 56ml of triethylamine in 300ml of anhydrous chloroform, mix well at -2°C, add 30ml of acryloyl chloride dropwise, react at -2°C for 10h under nitrogen atmosphere, filter under vacuum, Wash, add sodium sulfate, filter, and purify to give quinoline acrylate.

[0053] Synthesis of 8-hydroxyquinoline-aniline-p-phenylenediamine copolymer:

[0054] Take 3g of...

Embodiment 3

[0067] Step 1: Preparation of modified graphene oxide:

[0068] Aniline-p-phenylenediamine copolymer:

[0069] 10 parts of aniline, 30 parts of p-phenylenediamine, 0.8 part of octylphenol polyoxyethylene ether, 100 ml of hydrochloric acid, stirred for 30 min, 2 parts of ammonium persulfate was dissolved in hydrochloric acid, added dropwise to the reaction system with stirring, suction filtered, Wash until the filtrate is neutral, remove impurities, wash, and dry at 44°C for 50h to obtain aniline-p-phenylenediamine copolymer.

[0070] Synthesis of Quinoline Acrylate:

[0071] Dissolve 50g of 8-hydroxyquinoline and 56ml of triethylamine in 300ml of anhydrous chloroform, mix well at 0°C, add 30ml of acryloyl chloride dropwise, react at 0°C for 12h under a nitrogen atmosphere, filter under vacuum, wash, Sodium sulfate was added, filtered and purified to give quinoline acrylate.

[0072] Synthesis of 8-hydroxyquinoline-aniline-p-phenylenediamine copolymer:

[0073] Take 3g of a...

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Abstract

The invention discloses a long-life polyurethane acrylic coating and a preparation method thereof. The component A and the component B are dispersed at a high speed to obtain the long-service-life polyurethane acrylic coating; the component A is prepared from the following components: modified polyurethane acrylic emulsion, epoxy resin, a benzotriazole ultraviolet light absorber and an organic silicon defoaming agent. And the component B comprises the following components: deionized water, a nonionic polyether polyurethane flatting agent, rutile titanium dioxide, nano barium sulfate, an antioxidant 1010 and an anionic sodium acrylate dispersing agent. Wherein the 8-hydroxyquinoline-aniline-p-phenylenediamine copolymer is adopted to modify the graphene oxide, so that the acid resistance of the graphene and the dispersing performance of the graphene in the coating are enhanced, and the coating has good weather resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of acrylic coatings, in particular to a long-life polyurethane acrylic coating and a preparation method thereof. Background technique [0002] The traditional acrylic polyurethane coating is made of hydroxyl-containing acrylic resin combined with aromatic polyurethane curing agent as the main film-forming material, adding titanium dioxide and other pigments and fillers, and then dispersing, grinding and painting at high speed. Although the traditional acrylic polyurethane coating can meet the basic requirements, it has the following shortcomings: using traditional acrylic resin with aromatic curing agent, the physical and chemical properties are acceptable, but the weather resistance is poor. In a relatively harsh and complex corrosive environment, traditional acrylic polyurethane coatings are difficult to meet the balance between high weather resistance and high resistance, which greatly reduces the actual ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/62C09D5/08C09D7/61C09D7/47C09D7/48C09D7/63C08F283/00C08F220/18C08F220/14C08F230/08C08F220/32C08F220/24
CPCC09D151/08C09D7/62C09D5/08C09D7/61C09D7/47C09D7/48C09D7/63C08F283/008C08K2201/011C08K2003/3045C08L75/08C08K9/08C08K3/042C08K3/22C08K3/30C08K5/3475C08K5/1345C08F220/1804C08F220/14C08F230/085C08F220/325C08F220/24C08F2500/26
Inventor 顾贵荣
Owner 无锡市造漆厂有限公司
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