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Organic-inorganic hybridization ultraviolet cured paint for protecting metallic surface

A metal surface and curing coating technology, which is applied to the device and coating of the surface coating liquid, can solve the problems of gel coating curing difficulties, poor adhesion, poor flexibility, etc., and achieve a smooth and uniform appearance and high hardness , enhance the effect of flexibility

Inactive Publication Date: 2008-11-19
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies, solve the problem of difficult curing of organic-inorganic hybrid gel coatings and the problems of poor adhesion and poor flexibility of UV-curable coatings applied to metal surfaces, a method of the present invention for use in An organic-inorganic hybrid UV-curable coating for metal surface protection, consisting of epoxy-modified silica gel resin, bisphenol A epoxy acrylate, polyurethane acrylate, reactive diluent, toughener, photoinitiator, Auxiliary composition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw materials and dosage

[0028] Tetraethyl orthosilicate 10.4g

[0029] γ-Glycidoxypropyltrimethoxysilane 2.36g

[0030] Diethylenetriamine 0.21g

[0031] 36.5% concentrated hydrochloric acid 0.05g

[0032] Ethanol 32g

[0033] Above each raw material is commercially available industrial product;

[0034] Preparation Process:

[0035] After adding 32g of ethanol to a three-necked flask with a stirrer, a thermometer, and a condensing reflux tube, add 10.4g of weighed tetraethyl orthosilicate and 2.36g of γ-glycidyl etheroxypropyltrimethoxysilane, add About 0.05g concentrated hydrochloric acid, adjust the pH value of the system to about 3-4, raise the temperature to about 45°C, and react for 6 hours. After cooling, 0.21 g of diethylenetriamine weighed was added thereto, and stirred at room temperature for half an hour to obtain an epoxy-modified silica gel resin.

Embodiment 2

[0037] Raw materials and dosage

[0038] Tetraethyl orthosilicate 8.32g

[0039] γ-Glycidoxypropyltrimethoxysilane 2.36g

[0040] Diethylenetriamine 0.21g

[0041] 36.5% concentrated hydrochloric acid 0.05g

[0042] Ethanol 26.7g

[0043] Above each raw material is commercially available industrial product;

[0044] Preparation Process:

[0045] After adding 26.7g of ethanol in a three-necked flask with a stirrer, a thermometer, and a condensing reflux tube, add 10.4g of orthosilicate and 2.36g of gamma-glycidyl etheroxypropyl trimethoxysilane, Add about 0.05g of hydrochloric acid, adjust the pH of the system to about 3-4, raise the temperature to about 45°C, and react for 4 hours. After cooling, 0.21 g of diethylenetriamine weighed was added thereto, and stirred at room temperature for half an hour to obtain an epoxy-modified silica gel resin.

Embodiment 3

[0047] Raw materials and dosage

[0048] Tetraethyl orthosilicate 12.48g

[0049]γ-Glycidoxypropyltrimethoxysilane 2.36g

[0050] Diethylenetriamine 0.21g

[0051] 36.5% concentrated hydrochloric acid 0.05g

[0052] Ethanol 37.1g

[0053] Above each raw material is commercially available industrial product;

[0054] Preparation Process:

[0055] After adding 37.1 g of ethanol to a three-necked flask with a stirrer, a thermometer, and a condensing reflux tube, add 10.4 g of weighed tetraethyl orthosilicate and 2.36 g of γ-glycidyl etheroxypropyl trimethoxysilane, Add about 0.05g of hydrochloric acid, adjust the pH of the system to about 3-4, raise the temperature to about 45°C, and react for 8 hours. After cooling, 0.21 g of diethylenetriamine weighed was added thereto, and stirred at room temperature for half an hour to obtain an epoxy-modified silica gel resin.

[0056] 2. Preparation of organic-inorganic hybrid UV-curable coatings for metal surface corrosion protectio...

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Abstract

The invention relates to organic-inorganic hybrid ultraviolet cured paint for metal surface protection. The paint comprises the following components in percentage by weight: 10 to 25 percent of epoxy modified silicon dioxide gel-resin, 15 to 30 percent of bisphenol-A epoxy acrylic ester, 5 to 15 percent of urethane acrylate, 35 to 45 percent of reactive diluent, 2 to 5 percent of toughener, 4 to 6 percent of photoinitiator, 0.5 to 0 percent of addition agent, wherein the epoxy modified silicon dioxide gel-resin is prepared by hydrolyzing a mixture of ethyl orthosilicate and gamma-glycidoxy propyl trimethoxy silane by a sol-gel method first and then adding diethylenetriamine. The paint film formed after the curing of paint has good strength, hardness, flexibility and strong acid and base resistance. The invention solves the problems that the organic-inorganic hybrid paint has high requirement on curing and common ultraviolet cured paint has poor adhesive force and flexibility when cured on metal base materials.

Description

Technical field: [0001] The invention relates to the field of metal coatings, in particular to an organic-inorganic hybrid ultraviolet curing coating for metal surface protection. Background technique: [0002] Organic-inorganic hybrid materials have become a hot and frontier issue in the field of composite materials research at home and abroad. The traditional preparation process is as follows: firstly, the sol-gel method is used to prepare nanogel particles, then the gel is dried, sintered, ground into powder, and finally blended into the body by mechanical or physical methods. This process is not only complicated, but also has problems such as agglomeration and poor dispersion in the granular system, resulting in poor anti-corrosion performance of the protective film. Although some researchers used silane coupling agents with different organic groups as additives to prepare organic-inorganic nano-hybrid anti-corrosion films (ZL 03134157.8). However, such a preparation m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/00B05D7/14
Inventor 李为立叶菊华
Owner JIANGSU UNIV OF SCI & TECH
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