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Ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive and preparation method thereof

A technology of hot-melt pressure-sensitive adhesives and acrylates, which is used in the fields of adhesives, hygiene and medical products, and can solve problems such as insufficient holding force and poor high temperature resistance

Inactive Publication Date: 2017-09-26
WUXI WANLI ADHESION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesives used above have the characteristics of insufficient holding force and poor high temperature resistance. For example, the temperature resistance range of rubber-type pressure-sensitive adhesives and EVA hot-melt pressure-sensitive adhesives is below 90°C.

Method used

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  • Ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive and preparation method thereof
  • Ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive and preparation method thereof
  • Ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The liquid initiator tert-butyl peroxybutyrate of Akema Company is selected for use, and the input amount is 0.3wt% of the total weight of the formula. The initiator is added in batches, and ethyl acetate is used as the reaction solvent; isooctyl acrylate 72 parts of ester, 14 parts of butyl acrylate, 12 parts of methyl methacrylate, 1 part of acrylic acid, 0.15 parts of photoinitiator, 0.35 parts of defoamer A515, 0.5 parts of antioxidant 1010, and the design solid content is 50% , the reaction time is 7 hours, and the high cohesion acrylate hot-melt pressure-sensitive adhesive is obtained after removing the solvent according to the above method.

[0043] Glue coating: Coating on release paper, set the temperature of the upper roller to 130°C, the temperature of the lower roller to 100°C, the temperature of the storage tank to 130°C, control the glue amount to 40g, and the coating thickness to 3.5-4μm.

[0044] UV radiation curing: place the glue-coated release paper i...

Embodiment 2

[0049] Select the refined AIBN as the initiator, the input amount is 0.27wt% of the total weight of the formula, the initiator is added in batches, and ethyl acetate is used as the reaction solvent; 79 parts of isooctyl acrylate, 3.5 parts of butyl acrylate , 15 parts of methyl methacrylate, 1.5 parts of acrylic acid, 0.25 parts of photoinitiator, 0.35 parts of defoamer A515, 0.40 parts of antioxidant 264, the design solid content is 50%, and the reaction time is 7 hours. According to the above The high cohesion acrylate hot-melt pressure-sensitive adhesive is obtained after the solvent is removed by the method.

[0050] Glue coating, UV curing and performance testing refer to Example 1.

Embodiment 3

[0052]The refined AIBN is selected as the initiator, and the input amount is 0.2wt% of the total weight of the formula. The initiator is added in batches, and ethyl acetate is used as the reaction solvent; 70 parts of isooctyl acrylate and 5 parts of butyl acrylate , 12 parts of methyl methacrylate, 1 part of acrylic acid, 0.8 parts of Changxing polyfunctional acrylic monomer EM39, 0.20 parts of photoinitiator, 0.6 parts of defoamer A501, 0.40 parts of antioxidant 264, positive twelve 0.4 parts of mercaptan, 10 parts of liquid hydrogenated petroleum resin 1020E, designed solid content of 50%, and reaction time of 7 hours. After removing the solvent in the above-mentioned manner, a high-cohesion acrylate hot-melt pressure-sensitive adhesive was obtained.

[0053] Glue coating, UV curing and performance testing refer to Example 1.

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Abstract

The invention discloses a preparation method of an ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive. The ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive for an adhesive tape is in the form of a non-solvent 100-percent hot melt adhesive, is mainly prepared from an acrylic ester series polymer, a photo-initiator component binding to a main chain of the polymer, and a tackifying resin which is adopted as required, can be cured rapidly under the radiation of ultraviolet C (the wavelength is 190 to 280 nanometers), has high heat resistance characteristic at the temperature of 120 to 140 DEG C, can be applied to industrial adhesive tapes, can be taken as a bonding agent for automobile heating components, has the characteristics of nontoxicity, safety, skin affinity and adjustable glass transition temperature, and can be applied in the field of sanitary and medical products. The ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive can be coated under a high gram weight and at a high speed on the aspect of coating implementation; the problems of solvent explosion danger, solvent discharge and odor in the solvent type acrylic acid series pressure-sensitive adhesive are solved.

Description

technical field [0001] The invention relates to a preparation method of an ultraviolet-curable acrylic hot-melt pressure-sensitive adhesive. The ultraviolet-curable acrylic hot-melt pressure-sensitive adhesive is mainly used as an industrial adhesive tape in the field of automobile parts manufacturing, such as for automobile roofs, engine inner covers, driving The bonding of components such as instrument panels and automotive wiring harnesses, as well as the field of sanitary and medical products, belongs to the field of adhesives. Background technique [0002] With environmental protection and consumers' requirements for air quality in automobiles, environmentally friendly hot melt adhesives are widely used in the bonding of automobile parts. At the same time, although solvent-based adhesives have excellent bonding properties, However, due to its heavy odor, high VOC, slow curing speed and heat fogging phenomenon, its use in the automotive industry has gradually decreased. ...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J4/06C09J133/08C09J11/06C09J11/08
CPCC08L2201/08C09J4/00C09J4/06C09J11/06C09J11/08C09J133/08C09J2301/302C09J2301/304C08L57/02
Inventor 陈帅
Owner WUXI WANLI ADHESION MATERIALS
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