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Adsorption pad for polishing glass display screen and preparation method thereof

A technology for a display screen and an adsorption pad, which is applied in grinding/polishing equipment, chemical instruments and methods, machine tools for surface polishing, etc. Short service life and other problems, to achieve the effect of long service life, reduced friction coefficient and cost saving

Pending Publication Date: 2022-07-05
ANHUI HECHEN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these adsorption pads can realize the polishing of glass display screens, they are easy to wear and tear, and due to poor heat dissipation, they cannot dissipate the heat generated by the friction of the polishing disc, so that the service life of the adsorption pads is short and needs to be replaced frequently. The adsorption pad has poor water resistance and solvent resistance, and is easy to absorb water or be corroded, which will affect the state of the hair follicle-like breathable structure, and then affect its adsorption effect

Method used

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  • Adsorption pad for polishing glass display screen and preparation method thereof
  • Adsorption pad for polishing glass display screen and preparation method thereof
  • Adsorption pad for polishing glass display screen and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The present embodiment provides a thermally conductive filler, which is made by the following steps:

[0036] Step A1, 0.35g graphene oxide and 100mL DMF were ultrasonically treated for 20min and then added 25mg didodecyldimethyl ammonium bromide, under nitrogen protection, stirred and reacted for 24h, then added 18mg 2-(7-azobenzo Triazole)-tetramethylurea hexafluorophosphate and 0.18g octa(aminophenyltrioxysilane), reacted at 78°C for 6h at constant temperature, filtered with suction, the filter cake was washed with ethanol for 3 times, and vacuum dried at 60°C 12h to obtain aminated nanoparticles;

[0037] Step A2: Mix 1.3g of aminated nanoparticles and 60mL of DMF, add 0.4g of 3-hydroxypropionyl chloride and 5mL of triethylamine, heat up to 90°C, react at constant temperature for 5h, suction filtration, and wash the filter cake with anhydrous ethanol 3 times Afterwards, it was vacuum-dried at 60° C. to constant weight to obtain a thermally conductive filler.

Embodiment 2

[0039] The present embodiment provides a thermally conductive filler, which is made by the following steps:

[0040] Step A1, 0.35g graphene oxide and 100mL DMF were ultrasonically treated for 20min and then added 25mg diddecyldimethyl ammonium bromide, under nitrogen protection, stirred and reacted for 24h, then added 20mg 2-(7-azobenzo triazole)-tetramethylurea hexafluorophosphate and 0.20g octa(aminophenyltrioxysilane), reacted at constant temperature for 6 hours at 78°C, filtered with suction, and washed the filter cake with ethanol for 5 times, and vacuum-dried at 60°C 12h to obtain aminated nanoparticles;

[0041] Step A2: Mix 2.0g of aminated nanoparticles and 60mL of DMF, add 0.6g of 3-hydroxypropionyl chloride and 5mL of triethylamine, heat up to 90°C, react at constant temperature for 5h, suction filtration, and wash the filter cake with anhydrous ethanol 3 times Then, vacuum-drying to constant weight at 60° C. to obtain a thermally conductive filler.

Embodiment 3

[0043] The present embodiment provides a protective agent, which is made by the following steps:

[0044] Step B1, add 50mmol of aniline, 0.1g of p-toluenesulfonic acid and 42.6mL of xylene to the three-necked flask, heat up to 100°C under stirring, then dropwise add 53mmol of hexafluoroacetone trihydrate, heat up to 130°C, and keep the reaction for 1h , cooled to room temperature and filtered, and the filter cake was recrystallized in toluene to obtain hydroxyfluoroaniline;

[0045] Step B2, under nitrogen protection, add 0.061mol 3-(3,5-di-tert-butyl-4-hydroxyphenyl) methyl propionate, 0.05mol hydroxyfluoroaniline and 250mL xylene into the three-necked flask, add zinc acetate , the absolute pressure was controlled at 22kPa, and the temperature was slowly raised to reflux for 5h under stirring. After the reaction was completed, it was cooled to room temperature and filtered. The filter cake was recrystallized in absolute ethanol to obtain esterified aniline. The consumption o...

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Abstract

The invention relates to a preparation method of an adsorption pad for glass display screen polishing, and belongs to the technical field of adsorption pad preparation, and the preparation method comprises the following steps: coating the surface of base cloth with a polyurethane adhesive, putting a polyurethane porous membrane, carrying out curing treatment, and then covering the surface of the polyurethane porous membrane with a protective film to obtain a base pad; adhering a double-faced adhesive tape to one side, far away from the protective film, of the base pad, adhering release paper to the outer side of the double-faced adhesive tape, rolling and cutting to obtain the adsorption pad for polishing the glass display screen. The heat-conducting filler is added into the polyurethane porous film to increase the heat dissipation rate and the wear resistance of the porous film, the protective agent is also added, the protective agent has the oxidation resistance of hindered phenol and hindered amine and can improve the aging resistance of the porous film, the compression ratio of the adsorption pad is 37% or above, the compression recovery rate is 92% or above, the water absorption capacity is 4.0 or below, and the adsorption pad has the good heat dissipation performance. The solvent resistance, the aging resistance and the heat dissipation performance are higher, and the service life is longer.

Description

technical field [0001] The invention belongs to the technical field of adsorption pad preparation, and in particular relates to an adsorption pad for polishing a glass display screen and a preparation method thereof. Background technique [0002] With the development of production and technology, and the increasing progress of photoelectric, sensor and material technology, the application of glass display in industry and people's life is becoming more and more extensive, but before it is used, its rough surface needs to be polished, and In the polishing process, an adsorption pad must be used to carry and fix it, and the quality of the adsorption pad directly affects the polishing effect of the glass display screen. The adsorption pad is generally a polyurethane vacuum adsorption pad. The air-permeable structure allows the air in the hair follicle holes in the glass adsorption pad area of ​​the pasting panel to be discharged under a certain pressure during the polishing proc...

Claims

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Application Information

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IPC IPC(8): C09J7/29C08J9/14C08J9/12C08J5/18C08L75/08C08K9/04C08K9/08C08K3/04C08G18/66C08G18/48C08G18/38C08G18/32C07C213/06C07C213/08C07C219/32C07C213/00C07C215/68B24B29/02B24B41/06
CPCC09J7/29C08J9/144C08J9/125C08J5/18C08G18/6688C08G18/48C08G18/3895C08G18/3814C08G18/3281C07C213/06C07C213/08C07C213/00B24B29/02B24B41/06C09J2301/16C09J2400/263C09J2423/106C09J2475/006C08J2375/08C08K2201/011C08K9/04C08K9/08C08K3/042C08J2203/182C08J2203/142C08J2203/10C07C215/68C07C219/32
Inventor 李加海黄国平梁则兵杨惠明李元祥
Owner ANHUI HECHEN NEW MATERIAL CO LTD
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