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Environment-friendly high-strength ultraviolet-cured acrylate pressure-sensitive adhesive and preparation method thereof

An acrylate and urethane acrylate technology, applied in the field of acrylate pressure-sensitive adhesive and its preparation, can solve the problems of solvent pollution, low pressure-sensitive adhesive strength, etc. Effect

Active Publication Date: 2020-07-24
王凤艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of using a large amount of solvent to pollute the environment and the low strength of the prepared pressure-sensitive adhesive in the preparation process of the existing solvent-based pressure-sensitive adhesive, and to provide an environment-friendly high-strength UV-curable acrylate pressure-sensitive adhesive and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0015] Specific implementation mode 1: This implementation mode is an environmentally friendly high-strength UV-curable acrylate pressure-sensitive adhesive, which consists of 30-70 parts by weight of nano-modified polyurethane acrylate oligomer, 30-70 parts of active It is prepared by diluent, 1-3 parts of adhesion promoter and 0.2-5 parts of photoinitiator.

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the nano-modified urethane acrylate oligomer is prepared according to the following steps:

[0017] Add 0.1 mol of vacuum-dehydrated glycol to a four-neck flask equipped with a stirrer, thermometer and dropping funnel, and add 0.05% to 0.3% of the total mass of glycol under stirring conditions after heating up to 60°C to 80°C organic tin catalyst, then drop 0.12mol ~ 0.2mol diisocyanate monomer, and then react at 60°C ~ 80°C for 3h ~ 6h, and then add 1% ~ 10% of the total mass of diol containing hydroxyl group Inorganic nano Ethyl acetate solution of particles, react at 60°C-80°C for 0.5h-2h, then add 0.1mol-0.2mol of hydroxyl-containing acrylate monomer, and react at 60°C-80°C for 1h-1.5h , and then distilled off the ethyl acetate in the system under reduced pressure at 40° C. to 50° C. to obtain a nano-modified polyurethane acrylate oligomer. Other steps are the same as in the first embodim...

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the diols are polypropylene glycol PPG-600, polypropylene glycol PPG-1000, polypropylene glycol PPG-1500, polypropylene glycol PPG- 2000, a mixture of one or more of polypropylene glycol PPG-3000 and polypropylene glycol PPG-4000; the organotin catalyst is dibutyltin dilaurate, stannous octoate, di(dodecylthio) Dibutyltin or dibutyltin diacetate; the diisocyanate monomers are toluene diisocyanate, 1,6-hexamethylene diisocyanate, isophorone diisocyanate, 4,4-diisocyanate dicyclohexylmethane and diphenylmethane diisocyanate One or more mixtures of isocyanates. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses an environment-friendly high-strength ultraviolet-cured acrylate pressure-sensitive adhesive and a preparation method thereof, relates to an acrylate pressure-sensitive adhesive and a preparation method thereof, and aims to solve the problems that a large amount of solvent is used in the preparation process of the existing solvent type pressure-sensitive adhesive to pollutethe environment and the prepared pressure-sensitive adhesive is low in strength. The pressure-sensitive adhesive is prepared from a nano-modified urethane acrylate oligomer, an active diluent, an adhesion promoter and a photoinitiator. The preparation method comprises the following steps: 1, weighing; and 2, sequentially mixing the reactive diluent, the nano-modified urethane acrylate oligomer, the photoinitiator and the adhesion promoter. When the nano-modified urethane acrylate oligomer is synthesized, hydroxyl-containing nanoparticles are introduced to participate in the reaction, and theadhesion promoter is introduced so that the peel strength is obviously improved. The environment-friendly high-strength ultraviolet-cured acrylate pressure-sensitive adhesive can be obtained.

Description

technical field [0001] The invention relates to an acrylate pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a kind of pressure-sensitive adhesive, which can stick to other surfaces by applying appropriate pressure during use. Due to its special bonding characteristics, pressure-sensitive adhesive products are currently widely used in various industries such as printing and packaging. Industry. With the continuous improvement of people's environmental awareness and technical requirements, the research and development of environmentally friendly and high-performance pressure-sensitive adhesives has become a research hotspot. UV-curable pressure-sensitive adhesive is a new type of energy-saving and environment-friendly pressure-sensitive adhesive, which has the characteristics of fast curing speed, low energy consumption, no pollution, good water resistance and heat resistance. UV-curable pressure-sens...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/04
CPCC09J175/14C09J11/04C08K2201/011C08K2003/2227C08K3/36C08K3/22
Inventor 王凤艳
Owner 王凤艳
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