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A fast surface-drying low-odor two-component acrylic adhesive

A technology of acrylate glue and methacrylate, which is applied in the direction of adhesives, adhesive additives, non-polymer organic compound adhesives, etc., and can solve problems such as affecting bonding performance, high mechanical strength, and long time for surface detackification , to achieve the effect of improving the problem of oxygen inhibition, avoiding sticky hands, and increasing the curing strength of the colloid

Active Publication Date: 2020-11-10
武汉双键新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The second generation (meth)acrylate structural adhesive (SGA), fast curing at room temperature and adjustable curing speed, two-component and does not require strict metering, easy to use, conducive to automation; does not need to strictly deal with the bonding surface, has an oil surface Adhesiveness, a wide range of adhesive materials, which is conducive to the assembly of special-shaped materials, high mechanical strength, widely used in electronic appliances, machinery, new energy vehicles and other industries; low-odor SGA products use low-odor, low-volatility and high-reactivity Methacrylate monomer replaces methyl methacrylate, and the odor of the colloid is significantly reduced, which improves the environmental friendliness of SGA and is favored by customers; the curing process of low-odor SGA glue uses peroxide as an initiator to trigger methacrylate Addition polymerization of double bonds in the monomer belongs to free radical polymerization; due to the use of low-odor, low-volatility and high-reactivity methacrylate monomers, during the curing process, the part of the colloid exposed in the air is hindered by free radical polymerization. The existence of the problem of polymerization, unreacted methacrylate monomers remain on the surface of the colloid, resulting in the problem of sticky hands on the surface of the colloid; the adhesion of the surface of the colloid is easy to absorb pollutants in the operating environment, which affects the appearance of the bonded product and also affects Adhesive properties
However, the addition of transition metal organic salts will affect the storage stability of the product, and the surface will take a long time to lose tack

Method used

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  • A fast surface-drying low-odor two-component acrylic adhesive
  • A fast surface-drying low-odor two-component acrylic adhesive
  • A fast surface-drying low-odor two-component acrylic adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the fast surface-drying low-odor two-component acrylic adhesive provided in this example is as follows:

[0025] Preparation of modified methacrylate oligomer: Add 3-glycidyl etheroxypropylmethyldiethoxysilane into the reactor, remove water under vacuum at 120°C for 2 hours; then add Tetrabutylammonium bromide, raise the temperature to 100°C, add methacrylic acid dropwise, the molar ratio of 3-glycidyl etheroxypropylmethyldiethoxysilane and methacrylic acid is 1:1.1 , After 30 minutes of dropwise addition, react for 8 hours. After the reaction is completed, the temperature of the material drops below 40°C, and the material is discharged to obtain a modified methacrylate oligomer.

[0026] Preparation of component A: (1) Weigh 50 parts by mass of modified methacrylate oligomer, 30 parts by mass of ethoxylated bisphenol A dimethacrylate, 3 parts by mass of hydroquinone, KH-151 2 Parts by mass, 4 parts by mass of cumene hydroperoxide, 13 parts by...

Embodiment 2

[0030] The preparation method of the fast surface-drying low-odor two-component acrylic adhesive provided in this example is as follows:

[0031] Preparation of modified methacrylate oligomer: Add 3-glycidyl etheroxypropylmethyldiethoxysilane into the reactor, remove water under vacuum at 120°C for 2 hours; then add For xyleneamine, raise the temperature to 100°C, add methacrylic acid dropwise, the dropwise addition is completed in 30 minutes, and react for 8 hours. After the reaction is completed, the temperature of the material drops below 40°C, and the material is discharged to obtain a modified methacrylate oligomer .

[0032] Preparation of component A: (1) Weigh 45 parts by mass of modified methacrylate oligomer, 27 parts by mass of tetraethylene glycol dimethacrylate, 4 parts by mass of p-benzoquinone and methylhydroquinone parts, 3 parts by mass of KH-171, 4 parts by mass of benzoyl peroxide, 15 parts by mass of fumed silica; (2) the above-mentioned modified methacryl...

Embodiment 3

[0036] The preparation method of the fast surface-drying low-odor two-component acrylic adhesive provided in this example is as follows:

[0037]Preparation of modified methacrylate oligomer: Add 3-glycidyl etheroxypropylmethyldiethoxysilane into the reactor, remove water under vacuum at 120°C for 2 hours; then add For triethylamine and tri-n-butylamine, raise the temperature to 100°C, add methacrylic acid dropwise, the dropwise addition is completed in 30 minutes, and react for 8 hours. After the reaction is completed, the material temperature drops below 40°C, and the material is discharged to obtain modified methyl Acrylate oligomer.

[0038] Preparation of component A: (1) Weigh 38 parts by mass of modified methacrylate oligomer, 33 parts by mass of trimethylolpropane triacrylate and ethoxylated trimethylolpropane triacrylate, 2 mass parts of 2-tert-butyl hydroquinone, 4 mass parts of KH-570, 2 mass parts of tert-butyl hydroperoxide, 18 mass parts of talcum powder; (2) th...

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Abstract

The invention provides a quick-surface drying and low-odor two-component acrylate adhesive which is prepared from a component A and a component B, wherein the component A is prepared from: 35-50 partsof modified methacrylate oligomer, 25-35 parts of methacrylate monomer, 0.5-5 parts of polymerization inhibitor, 0.5-5 parts of coupling agent, 1-5 parts of initiator and 5-20 parts of tackifier; thecomponent B is prepared from: 60-75 parts of methacrylate monomer, 5-10 parts of methacrylic acid, 0.5-5 parts of polymerization inhibitor, 0.5-5 parts of accelerant, 0.5-5 parts of catalyst A and 15-25 parts of flexibilizer, wherein the modified methacrylate oligomer is a product of a heating reaction between 3-glycidoxypropyl methyldiethoxysilane and methacrylic acid. When in use, the two-component acrylate adhesive provided by the invention can greatly shorten the time of the colloid surface sticking to hand.

Description

technical field [0001] The invention provides a low-odor two-component acrylic adhesive with fast surface-drying function, which belongs to the technical field of adhesives. Background technique [0002] The second generation (meth)acrylate structural adhesive (SGA), fast curing at room temperature and adjustable curing speed, two-component and does not require strict metering, easy to use, conducive to automation; does not need to strictly deal with the bonding surface, has an oil surface Adhesiveness, a wide range of adhesive materials, which is conducive to the assembly of special-shaped materials, high mechanical strength, widely used in electronic appliances, machinery, new energy vehicles and other industries; low-odor SGA products use low-odor, low-volatility and high-reactivity Methacrylate monomer replaces methyl methacrylate, and the odor of the colloid is significantly reduced, which improves the environmental friendliness of SGA and is favored by customers; the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/04C09J11/06
CPCC09J4/06C09J11/04C09J11/06
Inventor 刘永刚洪建孙雨声徐成华雷木生游仁国
Owner 武汉双键新材料股份有限公司