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

A kind of rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application

A technology of rubber additives and oxide stone, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of graphene being difficult to disperse evenly, difficult to exert its unique advantages, weak bonding of rubber interface, etc., to improve moisture resistance. Slip, avoid migration and volatilization, improve the effect of aging resistance

Active Publication Date: 2019-06-18
SOUTH CHINA UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because graphene is difficult to disperse uniformly in rubber and is weakly bonded to the rubber interface, its unique advantages are difficult to exert
In order to solve the above problems, so far, graphene has been mainly modified by adding organic substances to improve its dispersion and interfacial bonding in rubber, but the modification process is complex, costly, and polluting, and the effect is not obvious

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
  • A kind of rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application
  • A kind of rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application
  • A kind of rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Disperse 300mg of graphite oxide into 300ml of deionized water and ultrasonically peel off to form a graphene oxide (GO) aqueous dispersion; dissolve 600mg of rubber vulcanization accelerator N-cyclohexyl-2-benzothiazolesulfenamide (accelerator CZ) In 120ml of absolute ethanol, and added to the above GO aqueous dispersion, stirred and reacted at 90°C for 3 hours, the reaction product was washed with ethanol, put in a vacuum oven, and dried at 50°C to constant weight, to be promoted. Agent CZ modified graphene (CZ-G). In order to better illustrate the characteristics of the present invention, hydrazine hydrate-reduced graphene was prepared according to existing conventional methods, named as HH-G, for comparison.

[0034] The infrared spectrograms (FTIR) of CZ-G, HH-G and GO prepared in this example are as follows figure 1 shown. It can be seen from the figure that compared with the FTIR spectra of GO, the spectra of CZ-G and HH-G are at 1729 cm -1 、1418 cm -1 、1226 ...

Embodiment 2

[0038] Disperse 200mg of graphite oxide into 400ml of deionized water, and ultrasonically peel it off to form a graphene oxide (GO) aqueous dispersion; dissolve 600mg of rubber antioxidant N,N'-diphenylpropylenediamine (antiaging agent DPD) in 60ml in toluene, and added to the above GO aqueous dispersion, stirred and reacted at 60°C for 2, 5, and 8 hours, the reaction product was washed with ethanol, put into a vacuum oven, and dried at 50°C to constant weight to obtain Antiaging agent DPD modified graphene (DPD-G).

[0039] FTIR and 13 C NMR results showed that the oxygen-containing functional groups in DPD-G were significantly reduced compared with GO, indicating that DPD can effectively reduce GO.

[0040] DPD-G and HH-G prepared in this example are compounded with SBR to prepare rubber composite materials. The formula is the same as in Example 1 except that the anti-aging agent 4020 is replaced by DPD, while ensuring that all formulas contain DPD. same number. The resul...

Embodiment 3

[0042] Disperse 300mg of graphite oxide into 200ml of deionized water and ultrasonically peel off to form a graphene oxide (GO) aqueous dispersion; dissolve 300mg of rubber antioxidant N-tert-butyl-2-benzothiazole sulfenamide (accelerator NS) In 60ml of acetone, and added to the above GO aqueous dispersion, stirred and reacted at 60°C for 1 hour, the reaction product was washed with ethanol, put in a vacuum oven, and dried at 60°C to constant weight to obtain the antioxidant NS-modified graphene (NS-G).

[0043] FTIR and XPS showed that the oxygen-containing functional groups in NS-G were significantly lower than those in GO, indicating that NS-G can effectively reduce GO.

[0044] The NS-G and HH-G prepared in this example are compounded with SBR to prepare a rubber composite material. The formula is the same as in Example 1 except that the accelerator CZ is replaced by NS, and the NS content contained in all formulas is guaranteed. same number. The results showed that NS-G...

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
concentrationaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses rubber chemical reduced and modified graphene oxide as well as a preparation method and an application thereof. The graphene oxide can be simultaneously reduced and modified just by conducting a reaction in one step; and specifically, the rubber chemical modified graphene is prepared by the following steps: mixing graphite oxide and water, and conducting ultrasonic exfoliation so as to obtain graphene oxide water dispersion liquid; mixing a rubber chemical solution with the graphene oxide water dispersion liquid, and conducting heating and stirring so as to obtain the rubber chemical modified graphene. According to the invention, a reducing agent is non-toxic and environment-friendly, the method is simple and easy to implement and reaction conditions are mild; and the prepared graphene is low in content of an oxygen-containing functional group in surface and high in conjugation degree; some rubber chemicals are chemically grafted on the surface of the graphene, so that the uniform dispersion of the graphene in rubber is promoted and an interface bonding action between the graphene and the rubber matrix is enhanced, and in addition, the migration and volatilization of the rubber chemicals are prevented and the action efficiency of the rubber chemicals is improved, so that the performance of a rubber / graphene composite material is improved. The invention provides a new opportunity and a new way for the green mass preparation of the graphene and for the preparation of the high-performance rubber / graphene nano composite material.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application. Background technique [0002] Graphene is the latest development and a revolutionary nanomaterial, first discovered in 2004, is a two-dimensional conjugated structure composed of a single layer of carbon atoms, with ultra-high mechanical properties and excellent thermal conductivity, electrical conductivity, etc. characteristic. Based on its unique chemical structure and excellent comprehensive properties, graphene has attracted widespread attention in the fields of new energy, biotechnology, and new materials. Graphene is generally obtained by reduction of graphene oxide, and its main preparation methods include chemical reduction method, solvothermal reduction method, chemical vapor deposition method, photocatalytic reduction method, etc. Among them, the c...

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): C08K9/04C08K3/04C08L9/06C08L7/00C01B32/19C01B32/194
CPCC08K3/04C08K9/04C08K2201/001C08L9/06C08L7/00
Inventor 贾志欣钟邦超董焕焕林静罗远芳贾德民
Owner SOUTH CHINA UNIV OF TECH
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