A cross-linked moisture barrier rubber adhesive, a double-sided adhesive tape using the adhesive and a preparation method thereof

A moisture barrier, double-sided tape technology, applied in adhesive additives, adhesives, polymer adhesive additives, etc., can solve the problem of weak bonding strength, low processing yield, and decreased assembly yield of electronic device modules, etc. problems, to achieve the effect of high bond strength, excellent high temperature and high humidity performance, and good die-cutting performance

Active Publication Date: 2020-06-16
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the high-moisture barrier tapes available on the market only have high moisture barrier properties, but the bonding strength is not high, or the adhesive properties are lost at high temperatures (85°C), or the aging properties are average. Unable to withstand the test for a long time and gradually lose function
Recently, Nihon Denko has developed a high moisture barrier tape, which has a low moisture vapor transmission rate, but the bond strength is weak, especially when the bond strength is basically lost at high temperatures of 85°C and above; TESA has also developed A high-moisture barrier tape, although it has high moisture barrier performance, but the tape is soft, prone to glue overflow during die-cutting, and the yield rate of subsequent processing is low; 3M has also developed similar products with high Moisture barrier performance, average bonding strength, and good die-cutting performance, but the adhesive layer is prone to peeling back during subsequent processing, which causes a decline in the yield of electronic device module assembly

Method used

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  • A cross-linked moisture barrier rubber adhesive, a double-sided adhesive tape using the adhesive and a preparation method thereof
  • A cross-linked moisture barrier rubber adhesive, a double-sided adhesive tape using the adhesive and a preparation method thereof
  • A cross-linked moisture barrier rubber adhesive, a double-sided adhesive tape using the adhesive and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation process of the cross-linked moisture barrier rubber adhesive of this embodiment: 330 g of toluene is put into a 1000 ml reaction bottle, and then the stirring device is started at a speed of 200 rpm, and polymerized terpene resin A (softening point of 85°C, melt viscosity of 500mPa·s, molecular weight of 300, glass transition temperature of 50°C) 90g, polymerized terpene resin B (softening point of 30°C, melt viscosity of 50mPa·s, molecular weight of 100, glass Transformation temperature is -50 ℃) 30g, aging agent 1010 and 168 are respectively 0.15g and 0.1g, after stirring for 15min to be dissolved, drop into star-shaped SIS (tensile strength is 1500psi, elongation at break is 800%, 10 The Shore A hardness of the second is 30, and the relative density is 0.89g / cm 3 , the melt index is 6g / 10min, the styrene content is 15%, the diblock content is 0, and the weight average molecular weight is 100,000) 90g, amino-modified SEBS (the tensile strength is 2000p...

Embodiment 2

[0032] The preparation process of the cross-linked moisture barrier rubber adhesive of this embodiment: put 323g of xylene into a 1000ml reaction bottle, then start the stirring device at a speed of 200rpm, and put in the polymerized terpene resin A (softening point is 130°C, melt viscosity is 1500mPa·s, molecular weight is 1500, glass transition temperature is 110°C) 90g, polymerized terpene resin B (softening point is 10°C, melt viscosity is 50mPa·s, molecular weight is 500, Glass transition temperature is -10 ℃) 30g, aging agent 1076 and 168 are respectively 0.15g and 0.1g, after stirring for 15min until it dissolves, put into star-shaped SIS (tensile strength is 3000psi, elongation at break is 1500%, The Shore A hardness of 10 seconds is 60, and the relative density is 0.92g / cm 3, melt index is 18g / 10min, styrene content is 30%, diblock content is 40%, weight average molecular weight is 500,000) 90g, amino-modified SEBS (tensile strength is 2500psi, elongation at break is ...

Embodiment 3

[0035] The preparation process of the cross-linked moisture barrier rubber adhesive of this embodiment: 345 g of cyclohexanone was put into a 1000 ml reaction bottle, and then the stirring device was started at a speed of 200 rpm, and polymerized terpene resin A (softened point is 100°C, melt viscosity is 1000mPa·s, molecular weight is 1000, glass transition temperature is 100°C) 90g, polymerized terpene resin B (softening point is 10°C, melt viscosity is 25mPa·s, molecular weight is 400 , glass transition temperature is -20℃) 30g, aging agent 2,6-di-tert-butyl-p-cresol and 168 respectively 0.15g and 0.1g, stir for 15min until it dissolves, then put into star SIS (tensile strength It is 2000psi, the elongation at break is 1000%, the Shore A hardness of 10 seconds is 50, and the relative density is 0.90g / cm 3 , melt index is 10g / 10min, styrene content is 20%, diblock content is 20%, weight average molecular weight is 200,000) 90g, amino-modified SEBS (tensile strength is 2000ps...

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Abstract

The invention discloses crosslinked moisture barrier type rubber adhesive, which is prepared from the following components by mass percent: 10-30% of star-shaped SIS, 1-5% of amino-modified SEBS, 12-20% of polymerized terpene A, 1-10% of polymerized terpene B, 0.01-0.1% of a cross-linking agent, 0.1-0.5% of an aging agent and 50-70% of a solvent. The crosslinked moisture barrier type rubber adhesive has the characteristics of being high in bonding strength and moisture barrier property, low in dielectric coefficient, free from acidity or weak in acidity, and the like; furthermore, the crosslinked moisture barrier type rubber adhesive can resist a certain high temperature (85 DEG C), is excellent in high temperature and high humidity properties, and is good in subsequent die cutting processing performance.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a cross-linked moisture barrier rubber adhesive, a double-sided adhesive tape using the adhesive and a preparation method thereof. Background technique [0002] With the rapid development of electronic products, the requirements for functional materials are getting higher and higher, such as functional tapes. At present, electronic products such as computers, mobile phones, Pads, and TVs on the market are being updated rapidly, with thinner and thinner bodies and larger and larger display screens, especially the latest OLED (Organic Light-Emitting Diode) display technology. screen, the requirements for fixed adhesive tape are getting higher and higher. [0003] OLED (Organic Light-Emitting Diode), as a new type of flat-panel display, has the characteristics of active luminescence, high luminance, high resolution, wide viewing angle, fast response, low energy consum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J11/06C09J11/08C09J7/10C09J7/30
CPCC08L2201/08C09J7/10C09J7/30C09J11/06C09J11/08C09J153/02C09J2453/00C08L53/025C08L45/00
Inventor 夏有贵王恒刘少锋龙冲刘章伟任志强
Owner 新纶电子材料(常州)有限公司
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