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Adhesive and application thereof in field of electrochromism

A technology of electrochromic devices and composite adhesives, applied in adhesives, instruments, optics, etc., can solve problems such as electrolyte leakage, poor stability of epoxy resin against moisture and heat, and failure of bonding performance

Active Publication Date: 2020-08-07
NINGBO MI RUO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, epoxy resin has poor moisture and heat stability, and is easily corroded by electrochromic materials under high temperature conditions, resulting in failure of bonding performance and leakage of electrolyte, so it is difficult to meet the requirements of long-term use in harsh environments.

Method used

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  • Adhesive and application thereof in field of electrochromism
  • Adhesive and application thereof in field of electrochromism
  • Adhesive and application thereof in field of electrochromism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Preparation of polyimide-siloxane resin containing cyanate groups:

[0061] (1) Dissolve 3,3′,4,4′-diphenylsulfide tetracarboxylic anhydride (20mmol) in a mixed solvent of N,N-dimethylacetamide and tetrahydrofuran (volume 150mL, volume ratio 1 / 1), then add aminophenyl-terminated polydimethylsiloxane (2 mmol) with a molecular weight of 1995 g / mol, stir at room temperature for 3 hours, and extract tetrahydrofuran under reduced pressure;

[0062] (2) Add 4,4'-diaminodiphenyl ether (8.5mmol) and 3,5-bis(4-aminophenoxy)phenol (8.5mmol) to the solution obtained in step (1), and stir at room temperature for 5 hours ; Then add aniline (2mmol), stir at room temperature for 5 hours, then add water-carrying agent xylene (30 mL), and react at 180 ºC for 10 hours;

[0063] (3) Add cyanogen chloride (8.5 mmol) and triethylamine (10 mmol) to the solution obtained in step (2) under an ice-water bath, and react at room temperature for 1 hour;

[0064] (4) Add the solution obtained in...

Embodiment 2

[0069] Preparation of polyimide-siloxane resin containing cyanate groups:

[0070] (1) Dissolve 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]hexafluoropropane dianhydride (20 mmol) in a mixture of N,N-dimethylformamide and tetrahydrofuran Solvent (150mL, volume ratio 2 / 1), then add aminophenyl-terminated polymethyltrifluoropropylsiloxane (3mmol) with a molecular weight of 2100g / mol, stir at room temperature for 5 hours, and extract tetrahydrofuran under reduced pressure;

[0071] (2) Add 4,4'-diaminodiphenyl ether (4mmol) and 3,5-bis(4-aminophenoxy)phenol (12mmol) to the solution obtained in step (1), and stir at room temperature for 5 hours; then Add aniline (2 mmol), stir at room temperature for 5 hours, then add water-carrying agent o-dichlorobenzene (40 mL), and react at 200 ºC for 5 hours;

[0072] (3) Add cyanogen chloride (12 mmol) and triethylamine (15 mmol) to the solution obtained in step (2) under an ice-water bath, and react at room temperature for 1 hour;

[0073] (4)...

Embodiment 3

[0078] Preparation of polyimide-siloxane resin containing cyanate groups:

[0079] (1) Dissolve 3,3′,4,4′-benzophenone tetracarboxylic anhydride (20mmol) in a mixed solvent of N-methylpyrrolidone and tetrahydrofuran (150mL, the volume ratio is 2 / 1), and then add the molecular weight 2100g / mol aminophenyl-terminated polymethyltrifluoropropylsiloxane (3mmol), after stirring at room temperature for 5 hours, extract tetrahydrofuran under reduced pressure;

[0080] (2) Add 3,3',5,5'-tetramethyl-4,4'-diaminodiphenylsulfide (8mmol) and 3,5-bis(4-amino Phenoxy)phenol (8mmol), stirred at room temperature for 5 hours; then added aniline (2mmol), stirred at room temperature for 5 hours, then added water-carrying agent xylene (30 mL), reacted at 180ºC for 10 hours;

[0081] (3) Add cyanogen chloride (8 mmol) and triethylamine (10 mmol) to the solution obtained in step (2) under an ice-water bath, and react at room temperature for 1 hour;

[0082] (4) Add the solution obtained in step (3...

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Abstract

The invention relates to a composite adhesive. The composite adhesive comprises cyanate-ester-group-containing polyimide-siloxane resin and cyanate ester resin. The content of the cyanate-ester-group-containing polyimide-siloxane resin is 5 to 15 wt%, and the content of polysiloxane in the cyanate-ester-group-containing polyimide-siloxane resin is 10 to 40 wt%. After the composite adhesive provided by the invention is cured, a rigid highly-crosslinked structure is formed, and a polysiloxane chain segment therein can play a role in improving the toughness and hydrophobicity of the composite adhesive, so the composite adhesive shows excellent damp-heat resistance stability. The composite adhesive provided by the invention can be used for packaging a solution type electrochromic device.

Description

technical field [0001] The invention relates to an adhesive, in particular to an adhesive for encapsulating a solution-type electrochromic device. Background technique [0002] Electrochromism is an electric-driven color-changing technology, which is a process in which a material changes its color by gaining and losing electrons under the action of an applied voltage. It has great application value in electrochromic windows, automobile rearview mirrors, electrochromic glasses, high-resolution photoelectric camera equipment, photoelectric chemical energy conversion / storage, military camouflage and decorative materials, etc. [0003] The basic structure of an electrochromic device is like a sandwich, with the electrochromic material placed between two substrates coated with conductive materials. According to the physical state of electrochromic materials, electrochromic devices can be divided into solution-type electrochromic devices, semi-solution-type electrochromic devices...

Claims

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Application Information

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IPC IPC(8): C09J179/04C09J179/08C08G73/10G02F1/161
CPCC09J179/04C08G73/1071C08G73/1064C08G73/106C08G73/1042C08G73/1007C08G73/1039G02F1/161C08L2201/08C08L79/08
Inventor 曹贞虎胡珊珊
Owner NINGBO MI RUO ELECTRONICS TECH CO LTD
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