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A kind of ultraviolet curing transfer adhesive and its preparation method and application

A technology of transfer glue and composition, which is applied in the direction of copying/marking methods, printing, adhesives, etc., can solve the problems of low bonding strength, insufficient heat resistance, poor chemical resistance, etc., and achieve tensile shear strength High, good light resistance, good film-forming effect

Active Publication Date: 2018-06-26
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although hot melt adhesives are currently widely used, they also have some disadvantages: insufficient heat resistance, low bonding strength, poor chemical resistance, long curing time, a small amount of VOC release, and are not environmentally friendly; special equipment such as Hot melt guns are used for melting and sizing, which is inconvenient to use, etc.
However, UV-curable adhesives are rarely used in the field of transfer printing films. This is mainly due to the lack of adhesion of conventional UV-curable adhesives to glass substrates, poor water resistance, and difficulty in surface drying at room temperature, so they cannot be used as transfer printing materials. glue

Method used

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  • A kind of ultraviolet curing transfer adhesive and its preparation method and application
  • A kind of ultraviolet curing transfer adhesive and its preparation method and application
  • A kind of ultraviolet curing transfer adhesive and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Add 30.8g of IPDI and 20mL of ethyl acetate to a four-neck flask with a condenser, thermometer, stirrer, and nitrogen conduit, and control the temperature at 45 to 50°C. Add 18.1g of HEMA, 0.3g of catalyst dibutyltin dilaurate (DBTDL), Mix 0.04g inhibitor 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO), MMA, n-BA, HMPA, AA and EHA with 20mL ethyl acetate, pour into the flask Add the mixed solution dropwise, raise the temperature to 65-70°C after the dropwise addition, and react for 1.5-2 hours to obtain polyurethane containing isocyanate; mix 55g MMA, 20g n-BA, 20g HPMA, 5g AA, 10g HEA and 1g AIBN, 2g of dodecyl mercaptan (NDM) and 50mL of solvent were mixed uniformly to obtain a mixed solution, and the mixed solution was controlled to be added dropwise within two hours. After the dropwise addition of the mixed solution is completed, add 0.5g AIBN dropwise into the reaction vessel, and control the system temperature at 72°C for constant temperature reaction for 5h t...

Embodiment 2

[0049] Add 24g TDI and 20mL ethyl acetate to a four-necked flask equipped with a condenser, thermometer, stirrer, and nitrogen conduit, control the temperature at 45-50°C, mix 16g HEA with 0.3g catalyst DBTDL, 0.04g polymerization inhibitor TEMPO, 20mL of ethyl acetate, mix well, add the mixed liquid into the flask dropwise, raise the temperature to 65-70°C after the dropwise addition, and react for 1.5-2h to obtain isocyanate-containing polyurethane; mix 50g MMA, 18g n-BA , 20g HPMA, 5g AA, 9g EHA, 1.5g AIBN, 3g NDM and 50mL solvent were mixed evenly to obtain a mixed solution, and the mixed solution was controlled to be added dropwise within two hours. After the dropwise addition of the mixed liquid is completed, add 0.5g AIBN dropwise into the reaction vessel, control the system temperature at 72°C for 5h constant temperature reaction to obtain a five-component acrylate copolymer, and its number-average molecular weight is 6000; A mixed solution of the above isocyanate-cont...

Embodiment 3

[0052] Add 25.9g IPDI and 20mL ethyl acetate to a four-neck flask equipped with a condenser, thermometer, stirrer, and nitrogen conduit 1, control the temperature at 45-50°C, and mix 13.5g HEA with 0.3g catalyst DBTDL, 0.04g polymerization inhibitor Agent TEMPO, 20mL ethyl acetate, mix evenly, drop the mixed solution into the flask, raise the temperature to 65-70°C after the dropwise addition, and react for 1.5-2 hours to obtain polyurethane containing isocyanate; mix 60g MMA, 22g BA, 21g HPMA, 5g AA, 11g EHA, 2g AIBN, 4gNDM and 50mL solvent were mixed evenly to obtain a mixed solution, and the mixed solution was controlled to be added dropwise within two hours. After the dropwise addition of the mixed liquid is completed, add 0.5g AIBN dropwise into the reaction vessel, control the system temperature at 72°C for 5h constant temperature reaction to obtain a five-component acrylate copolymer with a number average molecular weight of 5300; Add dropwise the mixed solution of the ...

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Abstract

The invention discloses an ultraviolet light curing transfer printing glue composition for a transfer printing film. The ultraviolet light curing transfer printing glue composition comprises the following components in parts by weight: 20-40 parts of modified acrylate, 20-40 parts of epoxy resin, 10-30 parts of reactive diluent, 3-8 parts of photoinitiator, 5-15 parts of adhesion promoter, 2-5 parts of silane coupling agent and 0-1 part of auxiliary, and the modified acrylate is prepared by modifying pentapolymer prepared from methyl methacrylate (MMA), n-butyl acrylate ((i)n( / i)-BA), hydroxypropyl methacrylate (HMPA), acrylic acid (AA) and 2-ethylhexyl acrylate (EHA) through free radical copolymerization by using polyurethane containing isocyanato. The prepared ultraviolet light curing transfer printing glue has good adhesion to a glass base material, and is good in water resistance, high in tensile strength and excellent in transfer printing effect.

Description

technical field [0001] The invention relates to the field of ultraviolet curing adhesives, and more specifically, to a transfer adhesive for transfer film. Background technique [0002] The glue layer adhesive used in the transfer film industry is mainly hot melt adhesive. Hot melt adhesives are solid at room temperature, and can be coated by heating and melting and bonding can be completed after pressing. At present, hot melt adhesives use thermoplastic resin or rubber as the main substance, and are combined with a series of additives such as plasticizers, antioxidants, flame retardants, and fillers. It is a multi-component mixture. Commonly used hot melt adhesive main resins include polyethylene, ethylene-vinyl acetate, polyamide, polyurethane, polyester, etc., and elastomers such as styrene-butadiene-styrene, styrene-isoprene-styrene, etc. . [0003] Although hot melt adhesives are currently widely used, they also have some disadvantages: insufficient heat resistance, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J163/00C09J11/00C08G18/67C08G18/62C08F220/14C08F220/18C08F220/28C08F220/06B41M5/382
CPCB41M5/382C08F220/14C08G18/6229C08G18/672C08L2201/08C09J11/00C09J163/00C09J175/14C08L63/00C08L75/14C08G18/62C08F220/1804C08F220/281C08F220/06C08F220/1808
Inventor 崔艳艳刘晓暄谢正瑞
Owner GUANGDONG UNIV OF TECH
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