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UV-curing adhesive as well as preparation method and application thereof

An adhesive and curing technology, which is applied in the direction of adhesives, ester copolymer adhesives, film/sheet adhesives, etc., can solve problems such as long reaction time, complicated process, and harsh curing conditions

Inactive Publication Date: 2019-01-18
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, UV light curing is also mainly used in the glue industry. UV curing technology can solve the existing complex curing process of adhesives. It needs to add curing agents such as epoxy, isocyanate and metal chelate, and the curing conditions are harsh. Reaction time long wait question

Method used

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  • UV-curing adhesive as well as preparation method and application thereof
  • UV-curing adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 60 g of butyl acrylate, 20 g of isooctyl acrylate, 12 g of vinyl acetate, 8 g of acrylamide, 0.3 g of azobisisobutyronitrile, and 100 g of ethyl acetate (40% solid content) and mix them uniformly. Take half of the mixed solution and pour it into a four-necked flask equipped with nitrogen, a mechanical stirrer, a condenser and a thermometer, and heat it to 78°C to start the reaction. In the system, after heat preservation and reaction for 3 hours, it was cooled.

[0028] (2) 5 g of glycidyl methacrylate was added into the reaction system, stirred and refluxed at 75° C. for 4 h, cooled and discharged.

[0029] (3) Fully mix the prepared glue solution with 1 g of 4-acryloyloxybenzophenone photoinitiator, apply it on the BOPET film with a thickness of 20-30 μm, and place it in an oven at 78° C. for 5 minutes.

[0030] (4) Then pass through UV light curing machine (wavelength 355nm, UV curing time is 180s. Curing machine UV radiation dose 180mJ / cm 2 ) for curing....

Embodiment 2

[0032] (1) Weigh 65g of sec-butyl acrylate, 20g of n-propyl acrylate, 5g of vinyl acetate, 10g of acrylamide, 0.1g of azobisisobutyronitrile, and 100g of ethyl acetate (40% solid content) and mix well. Take half of the mixed solution and pour it into a four-necked flask equipped with nitrogen, a mechanical stirrer, a condenser and a thermometer, and heat it to 78°C to start the reaction. In the system, keep warm for 3 hours and then cool down.

[0033] (2) Add 4.9 g of glycidyl methacrylate into the reaction system, stir and reflux at 75° C. for 4 hours, and cool and discharge.

[0034] (3) Fully mix the synthesized UV-curable adhesive glue and 1g of 4-acryloyloxybenzophenone photoinitiator, and apply it on the BOPET film with a thickness of 20-30μm. ℃ oven for 5min.

[0035] (4) Then pass through UV light curing machine (wavelength 355nm, UV curing time is 180s. Curing machine UV radiation dose 180mJ / cm 2 ) for curing. After curing, take it out, use a film laminating mach...

Embodiment 3

[0037] (1) Weigh 70g methyl acrylate, 20g ethyl methacrylate, 5g methacrylic acid, 5g acrylamide, 0.3g dibenzoyl peroxide, 150g ethyl acetate (50% solid content) and mix well. Take half of the mixed solution and pour it into a four-necked flask equipped with nitrogen, a mechanical stirrer, a condenser and a thermometer, and heat it to 78°C to start the reaction. In the system, after heat preservation and reaction for 3 hours, it was cooled.

[0038] (2) Add 7g of glycidyl methacrylate into the reaction system, stir and reflux at 75°C for 4h, and cool and discharge.

[0039] (3) Fully mix the synthesized UV-curable adhesive glue and 1.5g of phenyl-(1-acryloyloxy)-cyclohexyl ketone photoinitiator, and apply it on the BOPET film with a thickness of 20 ~30 μm, put it in a 78°C oven for 5 minutes.

[0040] (4) Then pass through UV light curing machine (wavelength 355nm, UV curing time is 180s. Curing machine UV radiation dose 180mJ / cm 2 ) for curing. After curing, take it out, ...

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Abstract

The invention discloses a UV-curing adhesive as well as a preparation method and an application thereof. The UV-curing adhesive is prepared from the following raw materials in parts by weight: 80-95 parts of adhesive monomers, 4-12 parts of functional monomers, 1-10 parts of acrylamide, 0.1-0.5 parts of an initiator, 100-150 parts of a solvent and 2-7 parts of glycidyl methacrylate. The preparation process of the UV-curing adhesive is simple, the UV-curing adhesive has excellent adhesive performance, avoids adhesive failure in the peeling process, and is convenient to store and transport and suitable for handicraft, glass products, electronic and electrical appliances, optical fields and digital optical disc manufacturing.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a UV-curable adhesive, a preparation method and application thereof. Background technique [0002] Adhesive is a substance with very good adhesive properties. Acts to connect objects by surface bonding through adhesion and cohesion. Due to its own characteristics, adhesives have a very wide range of applications in the market. The application fields include daily necessities, shielding and protective films for electronic product packaging, and insulating tapes for electrical appliances. [0003] Acrylic pressure-sensitive adhesive is one of the most widely used adhesives at present. It is a copolymer of acrylate monomer and other vinyl monomers. It has the following characteristics: (1) It has excellent weather resistance almost without adding anti-aging agent (2) No phase separation and migration, good transparency, poor oil resistance; (3) No effect on skin, suitable for medical fiel...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/30C09J133/08C08F220/18C08F220/14C08F8/00
CPCC09J7/255C09J7/30C09J133/26C08F8/00C09J2467/006C09J2301/122C09J2301/302C08F220/1812C08F220/1804C08F220/1802
Inventor 贺金梅张晓勇白永平岳利培
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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