Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Gas sensitive film sensitive to ethanol and acetone and preparation method thereof

A technology of acetone and ethanol, which is applied to the device and coating of the surface coating liquid, which can solve the problems of ethanol or acetone vapor overflow, and achieve the effects of short response time, large specific surface area and high sensitivity

Active Publication Date: 2020-04-14
WUHAN TEXTILE UNIV +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the response to ethanol or acetone is generally a response to impedance changes, and it is impossible to determine whether there is ethanol or acetone vapor overflow through macroscopic morphological changes, and so far there is no documented gas sensor that is responsive to both ethanol and acetone. Material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas sensitive film sensitive to ethanol and acetone and preparation method thereof
  • Gas sensitive film sensitive to ethanol and acetone and preparation method thereof
  • Gas sensitive film sensitive to ethanol and acetone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of the gas-sensitive film sensitive to ethanol and acetone comprises the following steps:

[0030] 1) Preparation of thermoplastic polymer nanofiber suspension: PVA-co-PE nanofibers are added to the alcohol-water mixture, the alcohol-water mixture is a mixture of n-propanol and water, and the mass ratio of n-propanol to water is The ratio is 7:3, using a homogenizer to break up the nanofibers to obtain a uniformly dispersed thermoplastic polymer nanofiber suspension; the mass percent concentration of the thermoplastic nanofiber suspension is 0.8%;

[0031] 2) Preparation of nanocrystalline cellulose suspension: cotton is added to 60wt% sulfuric acid solution to carry out acid hydrolysis of cotton, the mass ratio of cotton and 60wt% sulfuric acid solution is 1:8, and the temperature of acid hydrolysis reaction is 45 ℃, the time is 30min, after the reaction is completed, the reaction solution is centrifuged and washed with pure water, then dialyzed ...

Embodiment 2

[0036] The preparation method of the gas-sensitive film sensitive to ethanol and acetone comprises the following steps:

[0037] 1) Preparation of thermoplastic polymer nanofiber suspension: add PA nanofibers to the alcohol-water mixture, the alcohol-water mixture is a mixture of isopropanol and water, and the mass ratio of isopropanol to water is 6:4 Using a homogenizer to disperse the nanofibers to obtain a uniformly dispersed thermoplastic polymer nanofiber suspension; the mass percent concentration of the thermoplastic nanofiber suspension is 1%;

[0038] 2) Preparation of nano-microcrystalline cellulose suspension: join wood pulp in 62wt% sulfuric acid solution to carry out acid hydrolysis reaction to wood pulp, the mass ratio of wood pulp and 62wt% sulfuric acid solution is 1:8.75, the acid hydrolysis reaction The temperature is 47°C, and the time is 35 minutes. After the reaction is completed, the reaction solution is centrifuged and washed with pure water, then dialyze...

Embodiment 3

[0044] The preparation method of the gas-sensitive film sensitive to ethanol and acetone comprises the following steps:

[0045] 1) Preparation of thermoplastic polymer nanofiber suspension: Add PET nanofibers to the alcohol-water mixture, the alcohol-water mixture is a mixture of n-butanol and water, and the mass ratio of n-butanol to water is 5:5 Using a homogenizer to break up the nanofibers to obtain a uniformly dispersed thermoplastic polymer nanofiber suspension; the mass percent concentration of the thermoplastic nanofiber suspension is 3%;

[0046] 2) prepare nano-microcrystalline cellulose suspension: sisal is added in the sulfuric acid solution of 65wt% and sisal is carried out acid hydrolysis reaction, the mass ratio of sisal and the sulfuric acid solution of 65wt% is 1:9, the acid hydrolysis reaction The temperature is 50°C, and the time is 40 minutes. After the reaction is completed, the reaction solution is centrifuged and washed with pure water, then dialyzed wi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of gas-sensitive film preparation, and particularly relates to a gas-sensitive film sensitive to ethanol and acetone and a preparing method thereof. The method includes firstly coating a substrate with a thermoplastic polymer nanometer fibrous suspension, drying the substrate to form a thermoplastic polymer film on the surface of the substrate, tearing off the thermoplastic polymer film from the substrate, preparing a nano-microcrystalline cellulose suspension through hydrolyzing cellulose with an acid, coating the thermoplastic polymer film with the nano-microcrystalline cellulose suspension, and drying the product to obtain the gas-sensitive film. Whether ethanol vapor or acetone vapor overflows or not can be determined through macroscopic morphologic changes of the prepared gas-sensitive film, and the prepared gas-sensitive film can response to ethanol vapor and acetone vapor.

Description

technical field [0001] The invention relates to the field of preparation of gas-sensitive thin films, in particular to a gas-sensitive thin film sensitive to ethanol and acetone and a preparation method thereof. Background technique [0002] Leakage of volatile solvents often occurs in the laboratory, especially for solvents with relatively simple packaging. The volatile solvents often evaporate into the air due to damaged lids, which not only wastes solvents, but also seriously affects the health of laboratory operators. . The common volatile solvents in the laboratory are ethanol and acetone. The gaseous acetone is a mildly harmful pollutant and will do some damage to the human nervous system. Since tiny cracks in the lid are not easy to be noticed, if a gas-sensitive material that can respond to both ethanol and acetone can be installed on the solvent bottle cap of ethanol or acetone, the presence or absence can be quickly judged through the shape change of the gas-sensi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08J5/18B05D1/00C08L29/02C08L77/00C08L67/02C08L75/04C08L1/04
CPCB05D1/00C08J5/18C08J7/0427C08J2329/02C08J2367/02C08J2375/04C08J2377/00C08J2401/04
Inventor 王栋朱青王文钟卫兵金玉霞
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com