UV (Ultraviolet)-cured acrylate pressure-sensitive adhesive with low shrinkage rate and preparation method thereof as well as UV-cured acrylate pressure-sensitive adhesive tape with low shrinkage rate

An acrylate, low shrinkage technology, applied in the field of low shrinkage UV-curable acrylate pressure-sensitive adhesive tapes, can solve the problems of low shrinkage and high pressure-sensitive adhesive adhesion, and achieve low shrinkage and adhesion. Large, wide-ranging effects

Active Publication Date: 2018-09-07
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

The pressure-sensitive adhesive and the pressure-sensitive adhesive tape of the present invention solve the defect that the surface shrinkage phenomenon occurs when the acrylate pressure-sensitive adhesive is cured by UV light duri

Method used

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  • UV (Ultraviolet)-cured acrylate pressure-sensitive adhesive with low shrinkage rate and preparation method thereof as well as UV-cured acrylate pressure-sensitive adhesive tape with low shrinkage rate
  • UV (Ultraviolet)-cured acrylate pressure-sensitive adhesive with low shrinkage rate and preparation method thereof as well as UV-cured acrylate pressure-sensitive adhesive tape with low shrinkage rate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] 1) After mixing 45 g of butyl acrylate, 15 g of isooctyl acrylate, 15 g of vinyl acetate, 4.7 g of acrylic acid, 2 g of hydroxyethyl acrylate, and 0.3 g of 4-acryloxy benzophenone, take 60 %, 75g of solvent (ethyl acetate: toluene = 5:3), 0.15g of initiator AIBN are mixed uniformly, then poured into a four-necked flask equipped with thermometer, mechanical stirring (150rap / min) and condenser, and then heated to 80 Reaction at °C, when the viscosity of the reaction system starts to increase, timing for 1 hour.

[0033] 2) After 1h, the remaining monomers, 75g solvents (ethyl acetate: toluene=5:3) and 0.075g initiator AIBN were uniformly added dropwise to the reaction system using a constant liquid funnel within 1h, and then incubated and reacted for 2h.

[0034] 3). Add the remaining 0.075g initiator AIBN into the reaction system at one time, and then keep the temperature for 1.5 hours.

[0035] 4) Add 18 g of polyvinyl acetate into the reaction system after ...

Example Embodiment

[0038] Example 2

[0039] 1) Mix 45g of butyl acrylate, 15g of isooctyl acrylate, 15g of vinyl acetate, 4.7g of acrylic acid, 2g of hydroxyethyl acrylate, and 0.3g of phenyl-(1-acryloyloxy)-cyclohexyl ketone Then, take 60% of it and 75g of solvent (ethyl acetate:toluene=5:3), 0.15g of initiator AIBN, mix well and pour it into a four-necked flask equipped with thermometer, mechanical stirring (150rap / min) and condenser , And then heated to 80°C to react. When the viscosity of the reaction system starts to increase, the time is 1h.

[0040] 2) After 1h, the remaining monomers, 75g solvent and 0.075g initiator are uniformly added dropwise into the reaction system using a constant liquid funnel within 1h, and then incubated and reacted for 2h.

[0041] 3). Add the remaining 0.075g initiator to the reaction system at one time, and then keep the temperature for 1.5 hours.

[0042] 4) Add 18 g of polyvinyl acetate into the reaction system after the heat preservation reaction for 1.5 hours, ...

Example Embodiment

[0045] Example 3

[0046] 1) After mixing 45 g of butyl acrylate, 15 g of isooctyl acrylate, 15 g of vinyl acetate, 4.7 g of acrylic acid, 2 g of hydroxyethyl acrylate, and 0.3 g of 4-acryloxy benzophenone, take 60 %, 75g of solvent (ethyl acetate: toluene = 5:3), 0.15g of initiator AIBN are mixed uniformly, then poured into a four-necked flask equipped with thermometer, mechanical stirring (150rap / min) and condenser, and then heated to 80 Reaction at °C, when the viscosity of the reaction system starts to increase, timing for 1 hour.

[0047] 2) After 1h, the remaining monomers, 75g solvent and 0.075g initiator are uniformly added dropwise into the reaction system using a constant liquid funnel within 1h, and then incubated and reacted for 2h.

[0048] 3). Add the remaining 0.075g initiator to the reaction system at one time, and then keep the temperature for 1.5 hours.

[0049] 4). Add 18 g of polyvinyl acetal into the reaction system after the heat preservation reaction for 1.5 ho...

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PUM

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Abstract

The invention discloses a UV (Ultraviolet)-cured acrylate pressure-sensitive adhesive with a low shrinkage rate and a preparation method thereof as well as a UV-cured acrylate pressure-sensitive adhesive tape with the low shrinkage rate. The UV-cured acrylate pressure-sensitive adhesive with the low shrinkage rate is characterized by being prepared from the following raw materials in parts by weight: 15 to 30 parts of a hard monomer, 30 to 60 parts of a soft monomer, 5 to 15 parts of a functional monomer, 0.3 to 0.5 part of an initiator, 0.2 to 0.8 part of a photo-curing agent, 13 to 20 partsof an expansion polymer and 100 to 160 parts of a solvent. In a synthesis process of the acrylate pressure-sensitive adhesive, the defect that a surface shrinkage phenomenon is generated in a UV photo-curing process is overcome; meanwhile, the pressure-sensitive adhesive disclosed by the invention has the advantages of great binding power, low shrinkage rate and no residual adhesive in an application process.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a low-shrinkage UV-curable acrylate pressure-sensitive adhesive, a preparation method thereof, and a low-shrinkage UV-curable acrylate pressure-sensitive adhesive tape. Background technique [0002] Adhesive refers to the technology that can connect the surfaces of homogeneous or heterogeneous objects together with some kind of adhesive. It has the characteristics of high viscosity, no glue residue, light weight and convenient use. Gluing is especially suitable for the connection of different materials, different thicknesses, ultra-thin specifications and complex components, such as steel, wood, plastic and objects used in special environments. Nowadays, adhesives are developing rapidly and have a wide range of applications. [0003] Pressure-sensitive adhesive is a kind of adhesive that is sensitive to pressure. It does not need heat, curing agent or other means, and only need...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J131/04C09J7/38C08F220/18C08F220/06C08F220/20C08F218/08C08F216/36
CPCC08F218/08C08F220/18C09J131/04C09J133/08C09J7/381C08F220/1804C08F220/06C08F220/20C08F220/1808C08F216/36
Inventor 贺金梅张晓勇白永平岳利培邓庆瑞殷晓芬
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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