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A medical UV-curable water-based conductive pressure-sensitive adhesive

A technology of pressure-sensitive adhesives and ultraviolet light, which is applied in the direction of conductive adhesives, pressure-sensitive films/sheets, adhesives, etc., can solve the problems of insufficient environmental protection in the production process of conductive pressure-sensitive adhesives, limit the application of conductive pressure-sensitive adhesives, etc., and achieve production High efficiency, fast curing speed, and the effect of reducing environmental pollution

Active Publication Date: 2020-09-15
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing conductive pressure-sensitive adhesive production process is not environmentally friendly, and the finished product has certain cytotoxicity and allergenicity, which limits the application of conductive pressure-sensitive adhesive to a certain extent.

Method used

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  • A medical UV-curable water-based conductive pressure-sensitive adhesive

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The chitosan was dissolved in 1% acetic acid solution by volume to obtain an aqueous solution with a mass concentration of 2%. (2) Take 40mL of the above solution and add 30g of acrylic acid, 15g of hydroxypropyl acrylate, 0.7g of crosslinking agent, 0.8g of photoinitiator, 30g of glycerol, and 0.8g of sodium hydroxide, and stir well until all the solids are dissolved. (3) Coating with a paint film applicator to obtain a wet film with a thickness of 2.0 mm. (4) Place the wet film 30 cm below the lamp tube of a cold light type ultraviolet curing machine with a power of 2000W, and take it out after irradiating for 50 seconds to obtain a conductive pressure-sensitive adhesive.

Embodiment 2

[0017] (1) Water-soluble polymer materials such as sodium carboxymethylcellulose are fully dissolved in water overnight to obtain an aqueous solution with a mass concentration of 3%. (2) Take 20 mL of the above solution and add 10 g of acrylic acid, 10 g of hydroxypropyl acrylate, 0.5 g of crosslinking agent, 0.4 g of photoinitiator, 20 g of glycerol, and 0.2 g of sodium hydroxide, and stir until all the solids are dissolved. (3) Coating with a paint film applicator to obtain a wet film with a thickness of 1.0 mm. (4) Place the wet film 20 cm below the lamp tube of a luminescent ultraviolet curing machine with a power of 1000 W, and take it out after irradiating for 80 seconds to obtain a conductive pressure-sensitive adhesive.

Embodiment 3

[0019] (1) The water-soluble polymer material hydroxyethyl cellulose is fully dissolved in water overnight to obtain an aqueous solution with a mass concentration of 5%. (2) Take 30 mL of the above solution and add 15 g of acrylic acid, 20 g of hydroxypropyl acrylate, 0.7 g of crosslinking agent, 0.6 g of photoinitiator, 25 g of glycerol, and 0.4 g of sodium hydroxide, and stir evenly until all the solids are dissolved. (3) Coating with a paint film applicator to obtain a wet film with a thickness of 1.5 mm. (4) Place the wet film at 25 cm below the lamp tube of a cold light type ultraviolet curing machine with a power of 1500W, and take it out after irradiating for 60 seconds to obtain a conductive pressure-sensitive adhesive.

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Abstract

A medical ultraviolet light-curable water-based conductive pressure-sensitive adhesive is prepared by the following steps: 1), configuring a water-soluble polymer material or chitosan into an aqueous solution with a mass concentration of 1-10%; 2), adding Acrylic acid, hydroxypropyl acrylate, crosslinking agent, photoinitiator, glycerol and sodium hydroxide, stirred until completely dissolved; 3), using a paint film applicator to coat a wet film of 1.0-2.0mm; 4) , Take it out after irradiating under the lamp tube of the ultraviolet curing machine. All raw materials of the present invention are water-soluble, and water is used as a solvent, which reduces environmental pollution and in vitro cytotoxicity and sensitization of products; the cellulose matrix or chitosan matrix is ​​natural and environmentally friendly, and is beneficial to adjust the pressure-sensitive adhesive. Coating viscosity; water-based photoinitiator is used, which is beneficial to avoid the stench produced by the decomposition of oil-soluble initiator; rapid curing by UV light irradiation, the curing speed is extremely fast, and the product production efficiency is extremely high.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a medical ultraviolet-cured water-based conductive pressure-sensitive adhesive. Background technique [0002] In recent years, electronic medical devices such as high-impedance electromyography, electrocardiograph, electrogastrograph, electric stimulator and high-frequency electric knife have been widely used in the diagnosis and treatment of diseases. They use electrodes to contact the human skin. Therefore, it is necessary for the electrodes to be electrically conductive and to be in close contact with the human epidermis. Conductive pressure-sensitive adhesive is both pressure-sensitive and conductive. It is a viscoelastic material that is activated by finger pressure in the absence of solvents and always maintains viscosity. Under the condition of light finger pressure, the rubber surface can instantly stick to the surface of human skin, and when combined with spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/10C09J7/38C09J151/02C09J9/02C08F251/00C08F220/28C08F222/14C08F220/06C08F2/48
CPCC09J7/00C09J9/02C09J151/02C08F2/48C08F251/00C08F251/02C09J2451/00C09J2301/314C09J2301/302C08F222/103C08F220/281
Inventor 朱云峰杨菁菁王康金辉黄海莲
Owner JIANGSU UNIV OF TECH
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