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Automotive UV (Ultraviolet) light-cured camouflage coating and preparation method thereof

A technology of photocuring and photocuring resin, which is applied in the field of coatings, can solve the problems of UV photocuring usage restrictions, affecting the curing and film formation of UV photocuring coatings, etc., and achieve the effect of improving photocuring speed, low cost and high aging resistance

Active Publication Date: 2014-08-27
JIANGSU LITIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

UV light-curable coatings should be cured to form films under ultraviolet light. Since a relatively large proportion of pigments in the coatings will absorb ultraviolet light, it will affect the curing of UV light-curable coatings. Therefore, the use of UV light-curable coatings in camouflage coatings restricted
At present, there is no report of UV light curing camouflage paint for vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Drop into 1920 grams of anhydrous citric acid (C 6 h 8 o 7 , molecular weight 192), 40 gram sodium formate, be warming up to 155 ℃, begin to drop ethylene oxide (C 2 h 4 O, molecular weight 44) 2200 grams of reaction, temperature control 155 ° C ~ 165 ° C, pressure 0.10 ~ 0.40 MPa, dropwise for 3 ~ 4 hours, after the drop is completed, 155 ° C ~ 165 ° C for 2 ~ 3 hours, and then cooled to 80 ° C Below, the crude product is obtained in discharging; after the crude product was added 40 grams of activated clay and stirred for 30 minutes, it was clear and transparent tetrahydroxycitric acid polyether ester (C 16 h 28 o 12 , molecular weight 412) 4037.6 grams.

[0021] In the 3000mL four-necked flask, drop into tetrahydroxy citrate polyether ester (C 16 h 28 o 12 , molecular weight 412) 206 grams, IPDI445 grams (2mol), catalyzer dibutyltin dilaurate 0.2 grams, be warming up to 60 ℃~65 ℃ and stir insulation reaction 2~3 hours, then add polymerization inhibitor 1 gram...

Embodiment 2

[0023] Drop into 1920 grams of anhydrous citric acid (C 6 h 8 o 7 , molecular weight 192), 60 grams of potassium formate, warming up to 155 ° C, began to drop propylene oxide (C 3 h 6 O, molecular weight 58) 3480 grams of reaction, temperature control 155 ° C ~ 165 ° C, pressure 0.10 ~ 0.40 MPa, dropwise for 3-4 hours, after the drop is completed, 155 ° C ~ 165 ° C for 2-3 hours, and then cooled to 80 ° C Below, the crude product is obtained in discharging; after the crude product was added 60 grams of activated clay and stirred for 30 minutes, it was clear and transparent tetrahydroxycitric acid polyether ester (C 24 h 44 o 13 , molecular weight 540) 5292 grams.

[0024] In the 3000mL four-necked flask, drop into tetrahydroxy polyether ester (C 24 h 44 o 13 , molecular weight 540) 270 grams, TDI 350 grams, catalyst dibutyltin dilaurate 0.2 grams, heat up to 60 ℃ ~ 65 ℃ stirring and heat preservation reaction for 2 to 3 hours, then add 1 gram of p-hydroxyanisole, cata...

Embodiment 3

[0026] UV photocurable resin: 19 parts of 4-functionality urethane acrylate (prepared in Example 1), 23 parts by weight of epoxy acrylate;

[0027] Reactive diluent: 18 parts of pentaerythritol tetraacrylate (PETA); 325 parts of triethylene glycol divinyl ether DVE-325 parts;

[0028] Camouflage pigment composition: C.I. Pigment Blue 15:3, 7.5 parts, C.I. Pigment Red 122, 0.2 parts, C.I. Pigment Yellow 83, 2.2 parts, Permanent Violet BHR-97, 0.06 parts, anatase titanium dioxide 0.2 parts, talcum powder 0.7 copies;

[0029] Accelerator: 0.7 parts of diethylamine; 0.7 parts of coupling agent KH-5700; 0.6 parts of rheological agent BYK-3000, 0.5 parts of defoamer 5400-PⅡ, 0.5 parts of matting powder micronized wax (product of Allied Signal);

[0030] 0.7 parts of photoinitiator Irgacure651 (BDMK), 0.7 parts by weight of 2‐chlorinated thioxanthone (CTX).

[0031] Described vehicle UV photocuring camouflage camouflage coating is prepared by the following method:

[0032] (1) C.I...

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PUM

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Abstract

The invention discloses an automotive UV (Ultraviolet) light-cured camouflage coating and a preparation method thereof. The camouflage coating comprises a UV light-cured resin, a reactive diluent, a camouflage paint composition, addition agents and a photoinitiator, wherein the UV light-cured resin is formed by four-functionality urethane acrylates and epoxy acrylates; the reactive diluent is formed by pentaerythritol tetraacrylate (PETA) and triethylene glycol divinyl ether (DVE-3); the addition agents comprise an accelerant, a coupling agent, a flatting agent, defoaming agent and extinction powder; the photoinitiator is formed by Irgacure651 and 2-chloridized thioxanthone. The camouflage coating disclosed by the invention has the characteristics of rapid curing speed, energy conservation, air pollution reduction, good adhesive force, high rigidity and the like.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a UV photocuring camouflage coating for vehicles and a preparation method thereof. Background technique [0002] UV curing coating is an environmentally friendly and energy-saving coating that was first successfully developed and commercialized by Bayer Company in Germany in 1968. Compared with self-drying solvent-based coatings, UV-curable coatings have the characteristics of energy saving, fast curing speed, solvent-free, low pollution, less land occupation, excellent physical and chemical properties of cured coatings, and are suitable for automatic assembly line coating. In recent years, UV-curable coatings have not only gradually replaced traditional solvent-based coatings for wood and plastics, but also continue to open up new application areas, such as metal surface coatings, three-dimensional precision molding processing, laser recording materials, optical fiber and chemical fiber co...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D163/10C09D5/30C09D7/12
Inventor 张丽丽马怀祥胡剑飞田启祥颜世民
Owner JIANGSU LITIAN TECH
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