A kind of cross-linked special rubber adhesive and double-sided adhesive tape using the adhesive and preparation method thereof

A special rubber and double-sided tape technology, applied in the direction of adhesive additives, adhesives, non-polymer adhesive additives, etc., can solve the problem of low dielectric number, decreased assembly yield of electronic device modules, large dielectric coefficient, etc. Problems, to achieve the effect of excellent high temperature and high humidity aging resistance, good die-cutting performance, and high water vapor barrier

Active Publication Date: 2021-01-29
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] Recently, Nihon Denko has developed an acid-free low-polarity adhesive tape, which is acid-free or weakly acidic, but the bonding strength is weak, especially at 80°C and above high temperature conditions, the bonding strength is basically lost; TESA has also developed a Acid-free low-polarity tape, although it has acid-free characteristics, but the dielectric coefficient is too large, but it cannot meet the requirements of OLED touch electronics; 3M has also developed similar products with low polarity, low dielectric number and acid-free Or weak acid characteristics, good die-cutting performance, but the bonding strength is also low, and the adhesive layer is prone to peeling back during subsequent processing, which has caused a decline in the yield of electronic device module assembly
At present, most of the low-polarity acid-free adhesive tapes on the market only have acid-free and low-polarity performance, but the bonding strength is not high, or the bonding performance is lost at high temperature (80 ℃), or the aging performance is average, so it cannot be used. Withstand the test of time and gradually lose function

Method used

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  • A kind of cross-linked special rubber adhesive and double-sided adhesive tape using the adhesive and preparation method thereof
  • A kind of cross-linked special rubber adhesive and double-sided adhesive tape using the adhesive and preparation method thereof
  • A kind of cross-linked special rubber adhesive and double-sided adhesive tape using the adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation process of the cross-linked special rubber adhesive of this embodiment: put 345 g of toluene into a 1000 ml reaction bottle, then start the stirring device at a speed of 200 rpm, and put in the polymerized terpene resin (softening point is 120 ° C, melting point Bulk viscosity is 900mPa·s, molecular weight is 700, glass transition temperature is 70°C) 96g, brominated phenolic resin (softening point is 70°C, bromine content is 3%, Tg is at 50°C) 21g, zinc resinate (resin Acid and rosin acid zinc salt) 5g, vulcanization accelerator zinc dibutylcarbamate 1g and aging agent 1010 and 168 respectively 0.15g and 0.1g, after stirring for 15min until it dissolves, then drop into partially cross-linked SIS ( The tensile strength of partially cross-linked SIS is 3500psi, the elongation at break is 800%, the Shore A hardness (10 seconds) is 40, and the relative density is 0.89g / cm 3 , the melt index is 12g, the styrene content is 20%, the diblock content is 10%, and...

Embodiment 2

[0032] The preparation process of the cross-linked special rubber adhesive of this embodiment: put 318g of xylene into a 1000ml reaction bottle, then start the stirring device at a speed of 200rpm, and put in the polymerized terpene resin (softening point: 110°C, Melt viscosity is 800mPa s, molecular weight is 1400, glass transition temperature is 90°C) 96g, brominated phenolic resin (softening point is 100°C, bromine content is 10%, Tg is at 80°C) 10g, zinc resinate 2.4 g, vulcanization accelerator zinc diethylcarbamate 1g and aging agent 1076 and 168 respectively 0.15g and 0.1g, stir for 15min and wait for it to dissolve, then drop into partially cross-linked SIS (stretching of partially cross-linked SIS) The strength is 4000psi, the elongation at break is 900%, the Shore A hardness (10 seconds) is 30, and the relative density is 0.92g / cm 3 , the melt index is 18g, the styrene content is 30%, the diblock content is 20%, and the weight-average molecular weight is 300,000) 100...

Embodiment 3

[0035]The preparation process of the cross-linked special rubber adhesive of this embodiment: put 320 g of cyclohexanone into a 1000 ml reaction bottle, then start the stirring device at a speed of 200 rpm, and put in the polymerized terpene resin (the softening point is 95° C. , melt viscosity is 1200mPa s, molecular weight is 500, glass transition temperature is 60°C) 96g, brominated phenolic resin (softening point is 80°C, bromine content is 5%, Tg is at 60°C) 10g, zinc resinate 5g, 1g of tetramethylthiuram disulfide, 0.15g and 0.1g of aging agent 2,6-di-tert-butyl-p-cresol and 168 respectively, stirred for 15min and waited for it to dissolve, then put into partially cross-linked SIS (partially The tensile strength of the cross-linked SIS is 4500psi, the elongation at break is 1200%, the Shore A hardness (10 seconds) is 50, and the relative density is 0.89g / cm 3 , the melt index is 18g, the styrene content is 20%, the diblock content is 20%, and the weight-average molecular...

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Abstract

The invention discloses a cross-linking type special rubber adhesive which includes, by mass percentage, 10-30% of partially crosslinked type SIS, 2-10% of brominated phenolic resin, 5-30% of polymerized terpene, 0.5-2% of zinc resinate, 0.1-1.0% of vulcanization accelerator, 0.01-0.05% of ageing agent and 50-70% of solvent. The cross-linking type special rubber adhesive has the characteristics ofhigh bond strength, low polarity, low dielectric coefficient, no acid or weak acid, can withstand certain high temperature (85 DEG C), has high temperature and high humidity aging resistance, and hasgood 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 special 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 updated rapidly, the body is getting thinner, and the size of the display screen is getting larger and larger, especially the latest technology OLED (Organic Light-Emitting Diode) display 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J145/00C09J161/06C09J11/06C09J7/40
CPCC08L2205/03C09J11/06C09J153/02C09J7/403C09J2301/124C08L45/00C08L61/06C08K5/098
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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