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Ultraviolet-cured bio-based pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof

An ultraviolet light and bio-based technology, applied in the field of pressure-sensitive adhesives, can solve the problems of inferiority, poor physical properties of pressure-sensitive adhesives, and unusability, and achieve the effects of reducing consumption, reducing carbon emissions, and reducing the greenhouse effect

Pending Publication Date: 2021-01-26
CROWN TAICANG ADHESIVE PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of additives such as polymerization inhibitors in the synthesis process of bio-based monomers, the physical properties of pressure-sensitive adhesives prepared from bio-based monomers are not good, which is not as good as that of traditional petroleum-based pressure-sensitive adhesives, or even unusable.

Method used

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  • Ultraviolet-cured bio-based pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof
  • Ultraviolet-cured bio-based pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Synthesis of prepolymer: Take 80 parts of lauryl acrylate, 12 parts of acrylic acid, 8 parts of isobornyl acrylate, 0.1 part of 184, and 0.02 parts of n-dodecyl mercaptan into a three-necked flask, and pass nitrogen gas to remove oxygen , after stirring evenly, turn on the ultraviolet lamp to irradiate, wait for the reaction viscosity to be 800-1500CPS, and the temperature change is 15°C, stop the light, and obtain the acrylic acid prepolymer;

[0024] (2) Coating formulation preparation: Take 100 g of the above-mentioned oligomer, 0.3 part of 1,6-hexanediol diacrylate, and 0.1 part of initiator TPO, and stir evenly to obtain a UV-curable propylene pressure-sensitive adhesive.

[0025] (3) Vacuum defoam the glue, coat it on the polyester release film with a coating thickness of 50 μm, and cure it with UVLED light. The wavelength of the curing lamp light source used is 365nm, and the curing energy is 1000-2000mJ / cm 2 ; Get a backing-free pressure-sensitive adhesive t...

Embodiment 2

[0027] (1) Coating formulation: Take 100 g of the oligomer synthesized in Example 1, 0.2 part of 1,6-hexanediol diacrylate, and 0.1 part of initiator TPO, and stir evenly to obtain a UV-curable propylene pressure-sensitive adhesive.

[0028] (2) Vacuum defoam the glue, coat it on the polyester release film with a coating thickness of 50 μm, and cure it with UVLED light. The wavelength of the curing lamp light source used is 365nm, and the curing energy is 1000-2000mJ / cm 2 , to obtain a substrate-free pressure-sensitive adhesive tape.

Embodiment 3

[0030] (1) Coating formulation: Take 100 g of the oligomer synthesized in Example 1, 0.4 part of 1,6-hexanediol diacrylate, and 0.1 part of initiator TPO, and stir evenly to obtain a UV-curable propylene pressure-sensitive adhesive.

[0031] (2) Vacuum defoam the glue, coat it on the polyester release film with a coating thickness of 50 μm, and cure it with UVLED light. The wavelength of the curing lamp light source used is 365nm, and the curing energy is 1000-2000mJ / cm 2 , to obtain a substrate-free pressure-sensitive adhesive tape.

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Abstract

The invention discloses an ultraviolet-cured bio-based pressure-sensitive adhesive, a pressure-sensitive adhesive tape and a preparation method thereof. The pressure-sensitive adhesive is prepared from the following components in parts by weight through ultraviolet polymerization: 100 parts of acrylic prepolymer, 0.2-1 part of cross-linking monomer and 0.1-3 part of photoinitiator. The acrylic prepolymer is prepared by the following steps of mixing 70-90 parts of a soft monomer, 10-30 parts of a hard monomer, 0-1.0 part of a chain transfer agent and 0.1-1.0 part of a photoinitiator, carrying out a monomer polymerization reaction under the irradiation of ultraviolet light, and controlling the reaction temperature at 5-15 DEG C to obtain the acrylic prepolymer with the viscosity of 800-2000CPS. The physical properties of the ultraviolet-cured bio-based pressure-sensitive adhesive disclosed by the invention can reach the same level of a petroleum-based pressure-sensitive adhesive.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to an ultraviolet-cured bio-based pressure-sensitive adhesive, a pressure-sensitive adhesive tape and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a type of adhesive that is sensitive to pressure. It can stick to other surfaces by applying appropriate pressure during use. Due to its special adhesive properties, it is mainly used in various industries such as mobile phones, automobiles, and packaging. Conventional pressure-sensitive adhesives are all solvent-based, and the solvent volatilizes during production and use, which is harmful to the human body and the environment. Therefore, it is gradually developing in the direction of water-based adhesives and light-cured adhesives. Water-based pressure-sensitive adhesives have disadvantages such as high energy consumption in the production process and poor product bondin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J7/38C09J7/10
CPCC09J4/06C09J7/38C09J7/10
Inventor 王四化麦启钊麦启波
Owner CROWN TAICANG ADHESIVE PROD CO LTD
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