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Ultraviolet-cured acrylate adhesive preparation method and product

A technology of acrylate and adhesive, which is applied in the field of preparation of UV-cured acrylate adhesive, can solve the problem of affecting the modification efficiency of liquid nitrile rubber to acrylate adhesive, the unsaturated double bond activity of nitrile rubber is not very high, and the nitrile Low light transmittance of rubber and other problems, to achieve the effect of low cost, improved comprehensive performance, and improved transparency

Active Publication Date: 2017-05-31
杭州得力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As we all know, in terms of improving the comprehensive mechanical properties of acrylate adhesives, using liquid nitrile rubber (NBR), especially liquid carboxyl-terminated nitrile rubber (CTBN) to modify acrylate adhesives is currently an effective method, but Due to the low light transmittance of nitrile rubber (CTBN), its application in UV curing adhesives is affected, and the unsaturated double bond activity in the molecular structure of nitrile rubber itself is not very high. It is difficult or very little to participate in the cross-linking and curing reaction. Even if the telechelic polymer-carboxyl-terminated nitrile rubber (CTBN) is used for modification, it has limited effect in the free-radical-dominated cross-linking and curing reaction. As a result, most of the liquid nitrile rubber polymer only acts as an "inert filler" in the adhesive layer, but fails to form a three-dimensional network structure with other acrylate monomers or prepolymers, and the polymer system will inevitably appear phase separation. It affects the modification efficiency of liquid nitrile rubber on acrylate adhesives, which leads to the decline of some of its mechanical properties

Method used

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  • Ultraviolet-cured acrylate adhesive preparation method and product
  • Ultraviolet-cured acrylate adhesive preparation method and product
  • Ultraviolet-cured acrylate adhesive preparation method and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First, add 300.00kg of hydroxyl-terminated nitrile rubber (molecular weight 2000-3000, hydroxyl value 0.4-0.5mmol / g), 315.00kg of toluene, 9.73kg of acrylic acid, p- Hydroquinone 158.00g, 37% hydrochloric acid 4.80kg, start the agitator, heat to the reaction system reflux phenomenon, and maintain the reaction at this temperature; React, lower the temperature to 55.0°C, vacuum out and recover the solvent toluene, and then discharge when the temperature is lowered to below 40°C, and the obtained acrylic-terminated nitrile rubber is ready for use.

[0033] Then, 110.00kg of acrylate-terminated nitrile rubber prepared above, 390.00kg of E51 epoxy acrylate, 8.00kg of trimethylolpropane triacrylate, 50.00kg of acrylic acid, 300.00kg of methyl acrylate, and 100.00kg of tetrahydrofuryl methacrylate kg, 0.50kg of tert-butylcatechol, 40.00kg of benzoin butyl ether, and 10.00kg of benzophenone were added to the mixing kettle, the temperature was raised to 30.0°C, stirred for 30.0m...

Embodiment 2

[0036]First, add 448.00kg of hydroxy-terminated nitrile rubber, 200.00kg of benzene, 8.06kg of acrylic acid, 66.00g of p-benzoquinone, and 4.03kg of 37% hydrochloric acid into a reaction kettle with a condenser and a water separator, start the stirrer, and heat to The reaction system refluxed, and the reaction was maintained at this temperature; when most of the theoretical water output was evaporated, the heating was stopped, the reaction was terminated, the temperature was lowered to 50.0 °C, the solvent benzene was vacuumed and recovered, and then the temperature was lowered to When the temperature is below 40°C, the material can be discharged, and the obtained acrylic-terminated nitrile rubber is ready for use.

[0037] Then, 300.00kg of acrylic-terminated nitrile rubber prepared above, 150.00kg of polyethylene glycol (200) acrylate, 200.00kg of vinyl acetate, 100.00kg of vinyl diglycol ether, 60.00kg of methacrylic acid, methyl Add 200.00kg of methyl acrylate, 0.15kg of p...

Embodiment 3

[0040] First, in a reactor with a condenser and a water separator, add 390.00kg of hydroxy-terminated nitrile rubber, 265.00kg of xylene mixed solvent, 9.75kg of methacrylic acid, 190.00g of hydroquinone, 4.88kg of 37% hydrochloric acid, Start the agitator, heat until the reaction system refluxes, and maintain the reaction at this temperature; when the reaction reaches the point where most of the theoretical water output is evaporated, stop heating, end the reaction, lower the temperature to 50.0°C, vacuum out and recover The solvent is xylene, and then the material can be discharged when the temperature is lowered to below 40°C to obtain acrylic-terminated nitrile rubber for later use.

[0041] Then, 200.00kg of the above-mentioned prepared acrylate-terminated nitrile rubber, 200.00kg of polyurethane acrylate, 100.00kg of E44 epoxy methacrylate, 20.00kg of diallyl phthalate, diethylene glycol divinyl ether 80.00kg, methacrylic acid 30.00kg, isooctyl methacrylate 150.00kg, met...

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Abstract

The invention discloses an ultraviolet-cured acrylate adhesive preparation method and product. The method comprises the steps: firstly, self preparing active telechelic polymer-terminal acrylic nitrile rubber as prepolymer; then preparing the ultraviolet (UV)-cured acrylate adhesive product by compounding acrylic monomer or other prepolymer, active diluent, polymerization inhibitor and photoinitiator. The preparation method disclosed by the invention has the advantages that raw materials are convenient in source and a manufacturing technology is simple. The obtained product can be cured by ultraviolet irradiation in room temperature and has advantages of stable storage, small curing shrinkage, good roughness, excellent adhesion strength and the like.

Description

technical field [0001] The invention belongs to the field of special and fast-curing adhesives, and in particular relates to a preparation method and a product of an ultraviolet (UV) curing acrylate adhesive. Background technique [0002] UV-curable adhesive, also known as UV-curable adhesive, is an adhesive that contains active double bond components and can undergo cross-linking and curing reactions under ultraviolet light. If the system is dominated by acrylic monomers or prepolymers, there are also The literature refers to it as the third generation acrylate adhesive. Ultraviolet (UV) curing technology was first used in the 1950s, and the United States first used it in the manufacture of photosensitive resins and printing plates. In 1968, Bayer of Germany developed a combination of unsaturated resins, photopolymerizable monomers, etc. The solvent-free light-curing coatings composed of these materials were subsequently introduced in Europe as light-curing adhesives. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J4/02C08C19/28
CPCC08C19/28C09J4/06
Inventor 沈良边榕梅王杰
Owner 杭州得力科技股份有限公司
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