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Visible-light-cured adhesive and preparation method thereof

A visible light curing adhesive technology, applied in adhesives, adhesive additives, non-macromolecular organic compound adhesives, etc., can solve problems such as failure to meet performance requirements, failure to obtain ingredients and environmentally friendly adhesives, etc., to achieve shortened curing time, The effects of compact distribution and improved mechanical strength

Active Publication Date: 2014-04-23
BEIJING POLYSTAR HITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the industrial adhesives in the prior art have disadvantages due to the use of ultraviolet light and containing harmful components. Although medical visible light-curable adhesives and visible light-curable composite resins are initiated by visible light, they cannot meet industrial requirements. Performance requirements, and those skilled in the art have not been able to obtain an adhesive that is cured by visible light, has environmentally friendly components, and meets industrial performance requirements; and then proposes a visible light-curable adhesive that meets industrial performance requirements and has environmentally friendly components.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Heat 20.0g of bisphenol A diglycidyl methacrylate (Bis-GMA) and 10.0g of diethylene glycol dimethacrylate to 40-50°C and mix evenly to form a matrix;

[0042] (2) Take 3.0g of the matrix and add 0.95g of 7-amino-4-methylcoumarin and 0.95g of N,N-dimethylaminoethyl methacrylate (DMAEMA), mix and disperse evenly at 40-50°C , forming a premix;

[0043] (3) Add the premix to the rest of the matrix, add 68.0g of silica with a particle size of 0.7μm and 0.1g of fumed silica with a particle size of 5nm, and mix well at 40-50°C , and then vacuumized, degassed and sealed to obtain visible light-curable adhesive A.

Embodiment 2

[0045] (1) Mix 30.0g of ethoxylated bisphenol A dimethacrylate (Bis-EMA) and 20.0g of triethylene glycol dimethacrylate at 50-60°C to form a matrix;

[0046] (2) Take 2.5g of the matrix and add 0.7g of 7-amino-4-trifluoromethylcoumarin, 0.15g of N,N-dimethylaminoethyl methacrylate (DMAEMA) and 0.15g of N,N- Neopentyl glycol dimethylaminomethacrylate, mix and disperse evenly at 50-60°C to form a premix;

[0047] (3) Add the premix to the rest of the matrix, add 46g of silicon dioxide with a particle size of 1.5μm and 3.0g of fumed silica with a particle size of 10nm, and mix uniformly at 50-60°C, Then vacuumize, degas and seal to obtain visible light-curable adhesive B.

Embodiment 3

[0049] (1) 20.0g ethoxylated bisphenol A dimethacrylate (Bis-EMA), 20.0g pentaerythritol tetraacrylate, 15.0g diethylene glycol dimethacrylate and 10.0g polypropylene glycol dimethacrylate Mix evenly at 40-50°C to form a matrix;

[0050] (2) Take 13.0g of the matrix and add 1.4g camphorquinone and 0.7g N,N-dimethylaminobenzoyl ethyl methacrylate (DMABEMA), mix and disperse evenly at 40-50°C to form a premix ;

[0051] (3) Add the premix to the rest of the matrix, add 30.9g of silicon dioxide with a particle size of 4μm and 2.0g of fumed silica with a particle size of 20nm, and mix uniformly at 40-50°C, Then vacuumize, degas and seal to obtain visible light-curable adhesive C.

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Abstract

The invention provides a visible-light-cured adhesive including the following components: by weight, 20-50% of methacrylate monomer, 10-30% of a methacrylate diluent, less than 5% of a visible light initiator, 30-68% of silica, glass powder or alumina powder and 0.1-5% of nano fumed silica, the methacrylate monomer is at least one substance from bisphenol A-glycidyl dimethacrylate, ethoxylated bisphenol A dimethacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate, and the invention also provides a preparation method of the visible-light-cured adhesive. The visible-light-cured adhesive is low in mobility, short in curing time, highin bonding strength, and suitable for industrial application.

Description

technical field [0001] The invention relates to an adhesive cured by visible light and a preparation method of the adhesive, belonging to the technical field of light-curable adhesives. Background technique [0002] Light-curing adhesives are mainly used for sealing and bonding between materials, such as bonding surface components and integrated circuit chips when making printed circuit boards, bonding automotive parts, bonding injection needles and syringes, and orthodontics Bonding in. When the adhesive is used, the light is directly used to initiate the curing of the adhesive, so as to achieve the effect of sealing and bonding. According to different uses, light-curing adhesives can be divided into two categories: industrial adhesives and medical adhesives. [0003] Industrial adhesives mainly refer to ultraviolet curing adhesives (also known as UV adhesives, shadowless adhesives), which have the advantages of room temperature curing, fast curing speed, high bonding str...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J171/08C09J11/04C09J11/06
Inventor 楚亚卿杜崇飞
Owner BEIJING POLYSTAR HITECH CO LTD
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