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Optical lens structure adhesive

A technology of optical lens and adhesive glue, which is applied in the field of adhesive glue, can solve the problems of insufficient weather resistance, acid and alkali resistance, and low bonding strength of adhesive glue, so as to improve the cohesion of glue, improve cohesion, and durability The effect of thermal performance improvement

Inactive Publication Date: 2021-06-11
重庆索梦得新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide an adhesive for optical lens structure to solve the problems of low bonding strength, weather resistance and insufficient acid and alkali resistance of existing adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An optical lens structural adhesive, which is composed of the following substances in weight percentage, 26% of aliphatic epoxy resin, 20% of bisphenol A epoxy resin, 30% of polyurethane modified resin, 2% of photosensitizer, and hydrophobic weather Silicon dioxide 1%, tackifying resin 20%, cationic curing agent 1%. Among them, the polyurethane modified resin is preferably a self-made polyurethane modified resin. The self-made polyurethane modified resin is end-capped with polyester polyol and polyester HDI by dropping into HEA, and the reaction temperature is controlled at 65-70 ° C. After checking that the reaction is complete, the temperature is lowered to about 30°C, and it is obtained by taking out the pan and cooling.

[0028] Its preparation method is:

[0029] First prepare the materials according to the above mass percentage of each component, put the prepared aliphatic epoxy resin, bisphenol A epoxy resin and polyurethane modified resin into the stirring tank...

Embodiment 2

[0037] Composed of the following substances by weight percentage: Aliphatic epoxy resin 26%, bisphenol A type epoxy resin 35%, polyurethane modified resin 15%, photosensitizer 2%, hydrophobic meteorological silica 1%, tackifying resin 20%, cationic curing agent 1%.

Embodiment 3

[0039] Composed of the following substances by weight percentage: aliphatic epoxy resin 36%, bisphenol A epoxy resin 20%, polyurethane modified resin 20%, photosensitizer 2%, hydrophobic meteorological silica 1%, tackifying resin 20%, cationic curing agent 1%.

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Abstract

The invention relates to the technical field of adhesives, in particular to an optical lens structure adhesive which comprises the following substances in percentage by weight: 26-36% of aliphatic epoxy resin, 20-35% of bisphenol A epoxy resin, 15-30% of polyurethane modified resin, 2% of a photosensitizer, 1% of hydrophobic fumed silica, 20% of tackifying resin and 1-2% of a cationic curing agent. The adhesive is high in structural strength, small in expansion coefficient, good in weather resistance and acid and alkali resistance and capable of meeting the bonding requirement of an optical lens structure.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an optical lens structural adhesive. Background technique [0002] At present, the rapid development of the electronics industry has driven higher demand for products, especially the upgrade of optical lens products, such as mobile phones, computers, reversing cameras, surveillance, driverless and other products, from the original low-magnification pixels to 100 million pixels. As mentioned above, the volume of the product is becoming smaller and smaller, which puts forward higher requirements for the glue bonded to the structure of the optical lens. [0003] At present, the expansion coefficient of optical lens structure adhesives at home and abroad in the market is relatively high, and the maximum bonding strength can only reach 50N tensile force, and its weather resistance and acid and alkali resistance are insufficient, which cannot meet the current bonding needs of optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C09J175/06C09J11/04
CPCC09J163/00C09J11/04C08L63/00C08L75/06C08K7/26
Inventor 马月春
Owner 重庆索梦得新材料科技有限公司
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