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Self-repairing type ultraviolet light cured anti-doodling resin and preparation method thereof

An anti-graffiti resin, ultraviolet light technology, applied in anti-fouling/underwater coatings, coatings, polyurea/polyurethane coatings, etc. Fast curing speed, increased dirt resistance, low cost of preparation

Active Publication Date: 2017-05-17
南雄科大科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the weather resistance and scratch resistance of the coatings prepared by the above methods have been significantly improved, the surface anti-graffiti properties of these coatings will decrease after experiencing multiple physical abrasions from the outside world. If they do not have self-healing function, It will affect the durability of the anti-graffiti coating

Method used

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  • Self-repairing type ultraviolet light cured anti-doodling resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 5 parts by mass of diphenylmethane diisocyanate, 3 parts by mass of polyethylene glycol (molecular weight: 600g / mol), 4 parts by mass of hydroxyl-terminated silicone oil (molecular weight: 1000g / mol) and 0.5 parts by mass of stearyl ester Isocyanate chain extender, dissolved in 30 parts by mass of tetrahydrofuran to obtain a uniform mixed solution and added 0.08 parts by mass of dibutyltin dilaurate, stirred and reacted at 60°C for 4 hours, slowly cooled to 40°C, and then 5 parts by mass of pentaerythritol tri Acrylic ester, 0.05 parts by mass of polymerization inhibitor hydroquinone and appropriate amount of tetrahydrofuran were mixed uniformly and added therein, stirred and reacted at 40° C. for 3 hours, and tetrahydrofuran was distilled off under reduced pressure to obtain a UV-curable polyurethane resin.

[0026] (2) The method for preparing the anti-graffiti resin is: 20 parts by mass of UV-curable polyurethane resin, 8 parts by mass of trimethylolpropane triacr...

Embodiment 2

[0028] (1) 6 parts by mass of isophorone diisocyanate, 5 parts by mass of polypropylene glycol (molecular weight: 1000g / mol), 3 parts by mass of hydroxyl-terminated silicone oil (molecular weight: 600g / mol) and 0.4 parts by mass of dodecyl ester isocyanate Chain extender, dissolved in 25 parts by mass of acetone to obtain a uniform mixed solution and added 0.05 parts by mass of dibutyltin dilaurate, stirred and reacted at 60°C for 4 hours, slowly cooled to 40°C, and then 8 parts by mass of methacrylic acid Hydroxypropyl ester, 0.06 parts by mass of polymerization inhibitor hydroquinone and appropriate amount of acetone were mixed uniformly and added therein, stirred and reacted at 40° C. for 3 hours, and the acetone was distilled off under reduced pressure to obtain a UV-curable polyurethane resin.

[0029] (2) The method for preparing the anti-graffiti resin is: with 30 parts by mass of UV-curable polyurethane resin, 12 parts by mass of isobornyl acrylate dispersed titanium di...

Embodiment 3

[0031] (1) 8 parts by mass of hexamethylene diisocyanate, 5 parts by mass of polycarbonate diol (molecular weight: 400g / mol), 6 parts by mass of hydroxyl-terminated silicone oil (molecular weight: 2000g / mol) and 0.3 parts by mass of octadecane Base ester isocyanate chain extender, dissolved in 40 parts by mass of tetrahydrofuran to obtain a uniform mixed solution and added 0.06 parts by mass of dibutyltin dilaurate, stirred and reacted at 60 ° C for 4 hours, slowly cooled to 40 ° C, and then 7 parts by mass of dibutyltin dilaurate Dipentaerythritol pentaacrylate, 0.06 parts by mass of polymerization inhibitor hydroquinone and appropriate amount of tetrahydrofuran were mixed uniformly and added thereto, stirred and reacted at 40° C. for 3 hours, and tetrahydrofuran was distilled off under reduced pressure to obtain a UV-curable polyurethane resin.

[0032] (2) The method for preparing the anti-graffiti resin is: 30 parts by mass of UV-curable polyurethane resin, 10 parts by mass...

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Abstract

The invention relates to self-repairing type ultraviolet light cured anti-doodling resin and a preparation method thereof. According to the preparation method, diisocyanate, dihydric alcohol, hydroxyl silicone oil, a long-chain alkane chain extender, a hydroxyl acrylate monomer, a polymerization inhibitor, an active diluter dispersed nano particle and a light initiator are adopted as main raw materials to synthesize the ultraviolet light cured resin with a self-repairing function. A film coating formed after being coated by adopting the anti-doodling resin provided by the invention is good in surface uniformity, high in hardness and good in abrasion resistance; stains caused by a doodling substance, a contaminant and the like can be easily wiped off; most importantly, after the surface of the film coating is subjected to physical abrasion, a long-chain alkane hydrophobic substance in the resin can migrate to the surface in wet and heat conditions to voluntarily repair the damaged surface; the antifouling property of the film coating is recovered.

Description

technical field [0001] The invention belongs to the technical field of preparation of anti-graffiti coatings, and in particular relates to a self-repairing ultraviolet light curing anti-graffiti resin and a preparation method thereof. Background technique [0002] In recent years, the loss caused by malicious graffiti has attracted great attention. Therefore, the coating industry is facing a huge challenge, which is the need to develop coatings with anti-graffiti properties. The anti-graffiti coating is a coating formed of anti-graffiti resin. The surface of the coating has a low surface tension, which can effectively prevent the adhesion and pollution of graffiti dirt, and can be easily removed by simple wiping. However, due to the particularity of outdoor applications, most anti-graffiti coatings will lose their anti-fouling properties and have no self-healing properties after being subjected to external physical wear. [0003] At present, there is no report on the prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/16C09D7/12C08G18/67C08G18/66C08G18/48C08G18/44C08G18/61C08G18/71
CPCC08G18/4009C08G18/44C08G18/48C08G18/61C08G18/66C08G18/672C08G18/71C08K3/22C08K3/36C08K2003/2241C08K2003/2296C08K2201/011C09D5/1662C09D7/67C09D7/68C09D175/14
Inventor 陈坤林顾坤吕凯王潮霞殷允杰
Owner 南雄科大科技有限公司
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