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Method for preparing organic flexible screen substrate material

A substrate material and flexible screen technology, applied in the field of OLED, can solve the problems of large fluctuations in production costs, threats to human health, poor market stability, etc., and achieve good thermal stability, excellent dimensional variability and anti-yellowing properties. , the effect of improving the adsorption capacity

Active Publication Date: 2019-11-15
ZHEJIANG OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome that the materials used in the prior art for making organic flexible screen substrates are all chemical plastics, the production cost is greatly affected by fluctuations in crude oil prices, and the market stability is poor; and these materials exist in the form of micron-scale films or microspheres, which are easy to Eco-environmental problems such as "microplastics" and "white pollution", and even problems that directly threaten human health, provide a method for preparing an organic flexible screen substrate material, using the crab shell as a raw material to extract the bio-based material chitin Nanofibers, the organic flexible screen substrate material obtained after modification is renewable, low in cost, safe and pollution-free, biodegradable, and the flexible substrate made of this substrate material has excellent light transmittance, tensile strength Stretchability and thermal stability, can be used in flexible screens

Method used

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  • Method for preparing organic flexible screen substrate material
  • Method for preparing organic flexible screen substrate material
  • Method for preparing organic flexible screen substrate material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Dry the Portunus crab shells to constant weight, boil them with 5% NaOH (w:v) for 2 hours, repeat 3 times, filter with neutral filter paper, and obtain the filter residue; transfer the filter residue to 2mol / L nitric acid solution, soak for 10h, repeat After 3 times, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The filter residue was transferred to DPTA aqueous solution (15%, m / v) (filter residue: solution = 1 (g): 20 (mL)), and N,N-dimethylformamide (3%, v / v) was added successively, followed by Oxidize hydrogen (2%, v / v), adjust the pH value of the solution to alkaline (pH=11), stir continuously at room temperature for 2 days, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The cleaned filter residue was transferred to an acetic acid solution with pH=3, ultrasonicated (900W, 50Hz, ice bath, 30min); after ultrasonication, centrifuged (12000rpm, 4°C, 30min), the superna...

Embodiment 2

[0033] Dry the Portunus crab shells to constant weight, boil them with 8% NaOH (w:v) for 1 hour, repeat 4 times, filter with neutral filter paper, and obtain the filter residue; transfer the filter residue to 1mol / L nitric acid solution, soak for 11h, repeat After 4 times, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The filter residue was transferred to DPTA aqueous solution (5%, m / v) (filter residue: solution = 1 (g): 30 (mL)), and N,N-dimethylformamide (1%, v / v) was added successively, followed by Oxidize hydrogen (1%, v / v), adjust the pH of the solution to alkaline (pH=9), stir continuously at room temperature for 1 day, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The cleaned filter residue was transferred to an acetic acid solution with pH=2.5, ultrasonicated (800W, 40Hz, 4°C water bath, 40min); after ultrasonication, centrifuged (10000rpm, 0°C, 40min), the supernata...

Embodiment 3

[0035]Dry the Portunus crab shells to constant weight, boil them with 10% NaOH (w:v) for 3 hours, repeat twice, filter with neutral filter paper, and obtain the filter residue; transfer the filter residue to 3mol / L nitric acid solution, soak for 12h, repeat After 2 times, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The filter residue was transferred to DPTA aqueous solution (10%, m / v) (filter residue: solution = 1 (g): 10 (mL)), and N,N-dimethylformamide (5%, v / v) was added successively, followed by Oxidize hydrogen (3%, v / v), adjust the pH of the solution to alkaline (pH=13), stir continuously at room temperature for 3 days, filter with neutral filter paper, and wash the filter residue with deionized water until neutral. The washed filter residue was transferred to an acetic acid solution with pH=3.5, ultrasonicated (1000W, 60Hz, 2°C water bath, 20min); after ultrasonication, centrifuged (14000rpm, 2°C, 20min), the superna...

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Abstract

The invention relates to the technical field of OLEDs, and discloses a method for preparing an organic flexible screen substrate material. The method comprises the following steps that portunid shellsare dried to a constant weight, placed into a NaOH solution for boiling and filtered; a residue is transferred into a nitric acid solution for soaking, and filtration is carried out after soaking; the residue is cleaned to be neutral, and then transferred into a diethylenetriamine pentaacetic acid aqueous solution, N, N-dimethylformamide and hydrogen peroxide are added in sequence, the pH of thesolution is adjusted to be alkaline, and after a stirring reaction is performed, filtration is carried out; the residue is washed to be neutral, then transferred into an acetic acid solution, after ultrasonic extraction is carried out, centrifuged separation is performed, and water of the supernatant is evaporated completely to obtain a DPTA-modified chitin nanofiber, namely the organic flexible screen substrate material. The organic flexible screen substrate material obtained by modifying a chitin nanofiber by DPTA has good optical and mechanical properties, and has strong adsorption performance for lanthanide elements.

Description

technical field [0001] The invention relates to the technical field of OLEDs, in particular to a method for preparing an organic flexible screen substrate material. Background technique [0002] With the development of semiconductor technology level, it has become a reality to prepare various thin film semiconductor devices with flexible substrates. The transparent conductive film deposited on the organic substrate not only has the photoelectric performance of the transparent conductive film on the hard substrate, but also has the advantages of light weight, foldable, unbreakable, easy to transport, and less investment in equipment. Flexible transparent conductive film materials can be used in solar cells, flat panel displays, electromagnetic shielding materials, thin film transistors, thermal radiation mirrors, gas sensors, antistatic coatings and semiconductor / insulator / semiconductor heterojunctions, windows of modern fighters and cruise missiles And other high-tech field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/00C08B37/08H01L51/00H10K99/00
CPCD01F9/00C08B37/003H10K77/111Y02E10/549
Inventor 葛亚明刘俊稚杨家顺韩厚峰
Owner ZHEJIANG OCEAN UNIV
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