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Ultraviolet-cured stripping protective material and preparation method and application thereof

A protection material, ultraviolet light technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of wasting energy, poor thermal stability, long curing time, etc., and achieves simple operation process, convenient transportation and storage, and short curing time. Effect

Active Publication Date: 2014-03-12
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The heat-cured peelable protective adhesive has the following problems: 1. It needs to be heated and cured, which wastes energy; 2. There is a small amount of VOC released, which is not environmentally friendly; 3. The curing time is long, which affects the efficiency; 4. During the process of heating and curing, it is easy to produce Overheating and curing, the protected surface will appear foggy after peeling off; 5. It needs to be stored in a freezer, which is inconvenient for transportation and storage; 6. The printing thickness is relatively large, and the amount used is large
[0006] Therefore, recently there has been research on the development of UV-curable protective adhesives, but the resulting UV-curable materials generally have disadvantages such as stickiness on the surface after curing, poor thermal stability, main materials containing corrosive substances or solvent-based systems, and VOC emissions.

Method used

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  • Ultraviolet-cured stripping protective material and preparation method and application thereof
  • Ultraviolet-cured stripping protective material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Example 1: Preparation of UV-cured peelable protective material

[0046] In a 500 ml glass four-neck flask equipped with a stirrer and a condenser, first take 145 grams of polyether polyols with a molecular weight between 2000 and 2500, an average functionality of 2, and an ether chain of ethylene oxide. Vacuumize and remove water for 3 hours at ℃, then cool it down to 45℃, stop vacuuming, add 16.4 grams of methane dicyclohexyl diisocyanate, stir rapidly, after the temperature is stable, slowly raise the temperature and control the temperature to 80℃ for reaction After 2.5 hours, cool down to 45°C after the reaction is complete, add 5.3 grams of hydroxyethyl acrylate, and add 0.05 grams of hydroquinone as a polymerization inhibitor, slowly raise the temperature to 75°C for 2.5 hours, and vacuum degas for 0.5 hours after the reaction is complete. hour, get the material to obtain polyurethane modified acrylate, and seal it away from light for future use. The tensile stre...

Embodiment 2

[0048] Example 2: Preparation of UV-cured peelable protective material

[0049] In a 500 ml glass four-neck flask equipped with a stirrer and a condenser, first take 218 grams of polyether polyols with a molecular weight between 3000 and 4000, an average functionality of 2.5, and an ether chain of butylene oxide. Vacuumize and remove water for 2 hours at ℃, then cool it down to 40℃, stop vacuuming, add 21.1 grams of methane dicyclohexyl diisocyanate, stir rapidly, after the temperature is stable, slowly raise the temperature and control the temperature to 75℃ for reaction After 3 hours, cool down to 40°C after the reaction is complete, add 6.4 grams of hydroxyethyl methacrylate and 5.0 grams of hydroxypropyl acrylate, and add 0.08 grams of polymerization inhibitor p-hydroxyanisole, slowly heat up to 70°C for reaction After 3 hours, after the reaction is complete, vacuum degassing for 0.5 hours, the material is obtained to obtain polyurethane-modified acrylate, which is sealed ...

Embodiment 3

[0051] Embodiment 3: Preparation of UV-cured peelable protective material

[0052] In a 500 ml glass four-neck flask equipped with a stirrer and a condenser, first take 283 grams of polyether polyols with a molecular weight between 2500 and 3000, an average functionality of 3, and an ether chain of propylene oxide. Vacuum down to remove water for 4 hours, then cool it down to 50°C, stop vacuuming, add 23.7 grams of methane dicyclohexyl diisocyanate, stir quickly, after the temperature is stable, slowly raise the temperature and control the temperature to 85°C Reaction 2 Hours, after the reaction is complete, cool down to 50°C, add 4.3 grams of hydroxyethyl acrylate, 2.5 grams of hydroxypropyl methacrylate and 5.7 grams of hydroxypropyl acrylate, and add 0.09 grams of polymerization inhibitor p-hydroxyanisole , slowly raised the temperature to 80°C for 2 hours, and after the reaction was complete, vacuum degassed for 0.5 hours, and obtained the polyurethane-modified acrylate, w...

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Abstract

The invention belongs to the technical field of surface protective materials, and discloses an ultraviolet-cured stripping protective material and a preparation method and application thereof. The stripping protective material comprises the following components in parts by weight: 50-90% of polyurethane modified acrylic ester, 5-35% of acrylics reactive diluent, 1-8% of photoinitiator, 1-15% of filler, and 0-10% of additive. According to the ultraviolet-cured stripping protective material, the ultraviolet light is used for triggering a chained polymerization, the time for curing is short, generally 1-5 seconds, and the production efficiency is high; not any organic gas is released, so that the preparation method is more environment-friendly; the use and operation process is simple and convenient, the surface of the material is not affected due to overheating curing, mist is generated after stripping; the integral protective material can be better stripped, is not sticky, has no mist, and is applicable to protecting surfaces of ITO (indium tin oxide) glass, ITO membranes and PET (polyethylene terephthalate) membranes.

Description

technical field [0001] The invention belongs to the technical field of surface protection materials, and in particular relates to a UV-cured peelable protection material and a preparation method and application thereof. Background technique [0002] The invention belongs to the technical field of peelable protective films, and in particular relates to a peelable protective film cured by ultraviolet light and its preparation method and application. [0003] Usually in the manufacturing process of flat-panel displays or touch screens, in order to prevent the front and back of the display, ITO conductive glass, etc. A thin layer of protective film is screen-printed on the front and back surfaces of the screen, so that it will not be scratched or polluted during subsequent processing, and at the same time play the role of insulation and moisture resistance. [0004] The current mainstream production process is to use heat-cured peelable protective film (abbreviated as peelable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 刘海涛薛纪东钟汉荣王伟东
Owner GUANGZHOU MECHANICAL ENG RES INST
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