Preparation method of graphene cigarette smoke filter screen and obtained filter screen

A graphene and filter technology, which is applied in the direction of e-liquid filter elements, separation methods, and dispersed particle filtration, can solve the problems of limited filtering effect, unsatisfactory adsorption effect of harmful gases, and unsatisfactory adsorption effect, and achieve broad application prospects Effect

Inactive Publication Date: 2020-10-27
丛春华
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing cigarette filters are made of fiber layers rolled into columns as filters. In order to improve the filtering effect, there is also a method of adding activated carbon to the filter. However, the filtering effect is limited and the adsorption effect on harmful gases is not ideal.
In the prior art, there is also a method of using diatomite to adsorb harmful gases in cigarettes, but such materials, on the one hand, have an unsatisfactory adsorption effect, and on the other hand, have a certain impact on the taste of cigarettes.

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
  • Preparation method of graphene cigarette smoke filter screen and obtained filter screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of graphene cigarette smoke filter screen, its preparation method comprises the following steps:

[0030] (1) Disperse 1g of graphene oxide in 10g of water to form a graphene oxide solution, add 2g of calcium chloride and 0.5g of sodium carbonate to the graphene oxide solution, mix and react, then add 0.42mL of ethanol, 0.2g of ammonia and 0.33 g ethylenediamine, reacted at 90°C for 6h, then added 50g of hydrochloric acid with a mass fraction of water of 10%, filtered, washed, and dried to obtain porous graphene;

[0031] (2) Take 100 mL of aqueous sodium hydroxide solution with a concentration of 2 mol / L, add 0.4 mol of terephthalic acid, stir well, then add 0.2 mol of nickel nitrate, react at 50 ° C for 5 h, filter, and dry to obtain a nickel metal organic framework solution ;

[0032] (3) get activated carbon, the porous graphene that step (1) obtains, the nickel metal organic framework solution that step (2) obtains, described activated carbon: porous graphe...

Embodiment 2

[0035] A kind of graphene cigarette smoke filter screen, its preparation method comprises the following steps:

[0036] (1) Disperse 1g of graphene oxide in 20g of water to form a graphene oxide solution, add 5g of calcium chloride and 0.2g of sodium carbonate to the graphene oxide solution, mix and react, then add 0.25mL of ethanol, 0.1g of ammonia and 0.2 g ethylenediamine, reacted at 100°C for 5h, then added 100g of hydrochloric acid with a mass fraction of water of 15%, filtered, washed, and dried to obtain porous graphene;

[0037] (2) Take 100 mL of aqueous sodium hydroxide solution with a concentration of 5 mol / L, add 1 mol of terephthalic acid, stir evenly, then add 0.5 mol of nickel nitrate, react at 100 ° C for 4 hours, filter, and dry to obtain a nickel metal organic framework solution;

[0038] (3) get activated carbon, the porous graphene that step (1) obtains, the nickel metal organic framework solution that step (2) obtains, described activated carbon: porous gr...

Embodiment 3

[0041] A graphene cigarette smoke filter, its preparation method comprises the following steps:

[0042](1) Disperse 1g of graphene oxide in 15g of water to form a graphene oxide solution, add 3g of calcium chloride and 0.25g of sodium carbonate to the graphene oxide solution, mix and react, then add 0.25mL of ethanol, 0.1g of ammonia and 0.2 g ethylenediamine, reacted at 100°C for 5h, then added 100g of hydrochloric acid with a mass fraction of water of 15%, filtered, washed, and dried to obtain porous graphene;

[0043] (2) Take 100 mL of aqueous sodium hydroxide solution with a concentration of 3 mol / L, add 0.6 mol of terephthalic acid, stir well, then add 0.3 mol of nickel nitrate, react at 100 ° C for 4 hours, filter, and dry to obtain a nickel metal organic framework solution ;

[0044] (3) get activated carbon, the porous graphene that step (1) obtains, the nickel metal organic framework solution that step (2) obtains, described activated carbon: porous graphene: the m...

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

No PUM Login to view more

Abstract

The invention provides a graphene cigarette smoke filter screen which takes honeycomb-shaped polypropylene as a base material, and graphene oxide, activated carbon and a nickel metal organic frameworkcomposite material are loaded on the base material. When smoke of the cigarette passes through the filter screen, the activated carbon can adsorb harmful gas; the porous graphene and the nickel metalorganic framework material with the large specific surface area can also adsorb a large amount of harmful gas, tar and heavy metal, and the nickel metal organic framework material can also decomposeharmful substances in the nickel metal organic framework material through catalysis. On one hand, the filtering efficiency is improved, and on the other hand, the service life is prolonged. The graphene cigarette smoke filter screen provided by the invention has the advantages that through the physical adsorption and chemical catalytic decomposition effects, the content of harmful substances in cigarette smoke can be effectively reduced, the content of tar is reduced by 85%, the content of benzopyrene is reduced by 45.45%, the content of lead is reduced by 74.1%, the content of arsenic is reduced by 50%, and the content of cadmium is reduced by 50%.

Description

technical field [0001] The invention belongs to the technical field of harm reduction and tar reduction of cigarette filters, and in particular relates to a method for preparing a graphene cigarette smoke filter and the obtained filter. Background technique [0002] There are more than 4,000 substances produced by burning tobacco in the smoke produced by cigarettes, most of which are harmful. The main harmful components of cigarettes are tar, heavy metals, benzopyrene, etc. Tar is a cause of lung cancer, bronchitis and other diseases, destroying people's health and even life. Some domestic scholars have conducted related research and found that in the smoke of a cigarette, the most easily absorbed heavy metal is cadmium, followed by lead. About 46.4% of cadmium and 26.4% of lead in a cigarette will enter the lungs. Harmful to human health. [0003] In order to reduce harmful substances in cigarette smoke, the prior art has provided filters in the design of cigarettes. Ex...

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 Applications(China)
IPC IPC(8): B01D46/00A24D3/04A24D3/06
CPCA24D3/04A24D3/06B01D46/0001
Inventor 丛春华
Owner 丛春华
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap