Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of graphene oxide modified polyurethane material

A polyurethane material and graphene modification technology, which is applied in the field of polyurethane materials, can solve the problems of poor temperature resistance of polyurethane, and achieve the effects of avoiding heating, improving heat resistance, and good dispersibility

Inactive Publication Date: 2019-06-28
JIANGSU UNIV OF TECH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defects that graphene oxide is easy to agglomerate and polyurethane has poor temperature resistance in the prior art, the object of the present invention is to provide a preparation method of graphene oxide modified polyurethane 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
  • Preparation method of graphene oxide modified polyurethane material
  • Preparation method of graphene oxide modified polyurethane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Prepare graphene oxide by improved Hummers method: add 23mL of concentrated sulfuric acid (98%) to a 250mL flask, cool to 0°C with an ice-water bath, add 1g of graphite powder under magnetic stirring, and then slowly add 3g of KMnO 4 , control the temperature of the reaction solution at 10-15° C., and stir for 2 hours. Then place the flask in a constant temperature water bath at 35°C to continue the reaction for 30 minutes, slowly add 46 mL of deionized water, control the reaction temperature at 90-95°C, continue to stir for 15 minutes, then add 140 mL of deionized water and 10 mL of 30% H 2 o 2 The aqueous solution was filtered while it was hot, and the filter cake was fully washed with 5% HCl and then vacuum-dried at 40°C to obtain graphene oxide, which was set aside.

[0031] (2) Weigh 100mg of graphene oxide prepared in step (1) and add it to 100mL of DMF solution, ultrasonically react for 2h, and the frequency of ultrasonic reaction is 50kHz, so that graphene ...

Embodiment 2

[0036] (1) Prepare graphene oxide with the improved Hummers method: prepare graphene oxide with the improved Hummers method: add 23mL of concentrated sulfuric acid (98%) in a 250mL flask, cool to 0°C with an ice-water bath, add 1g of graphite under magnetic stirring powder, then slowly add 3g KMnO 4 , control the temperature of the reaction solution at 10-15° C., and stir for 2 hours. Then place the flask in a constant temperature water bath at 35°C to continue the reaction for 30 minutes, slowly add 46 mL of deionized water, control the reaction temperature at 90-95°C, continue to stir for 15 minutes, then add 140 mL of deionized water and 10 mL of 30% H 2 o 2 The aqueous solution was filtered while it was hot, and the filter cake was fully washed with 5% HCl and then vacuum-dried at 40°C to obtain graphene oxide, which was set aside.

[0037](2) Weigh 100mg of graphene oxide prepared in step (1) and add it to 100mL of DMF solution, ultrasonically react for 3h, and the freq...

Embodiment 3

[0042] (1) Prepare graphene oxide with improved Hummers method: prepare graphene oxide with improved Hummers method: add 23mL of concentrated sulfuric acid (98%) in a 250mL flask, cool to 0°C with an ice-water bath, add 1g of graphite under magnetic stirring powder, then slowly add 3gKMnO 4 , control the temperature of the reaction solution at 10-15° C., and stir for 2 hours. Then place the flask in a constant temperature water bath at 35°C to continue the reaction for 30 minutes, slowly add 46 mL of deionized water, control the reaction temperature at 90-95°C, continue to stir for 15 minutes, then add 140 mL of deionized water and 10 mL of 30% H 2 o 2 The aqueous solution was filtered while it was hot, and the filter cake was fully washed with 5% HCl and then vacuum-dried at 40°C to obtain graphene oxide, which was set aside.

[0043] (2) Weigh 100mg of graphene oxide prepared in step (1) and add it to 100mL of DMF solution, ultrasonically react for 2.5h, and the frequency ...

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 belongs to the technical field of polyurethane materials and particularly relates to a preparation method of a graphene oxide modified polyurethane material. The method specifically comprises the steps of dispersing prepared graphene oxide into organic solvent so as to prepare graphene oxide suspension liquid, adding ionic liquid, preparing modified graphene oxide suspension liquid,adding the graphene oxide suspension liquid into a polyurethane adhesive, mixing so as to obtain a composite polyurethane material, and carrying out film coating and drying. The preparation method hasthe beneficial effects that the problem of poor consistency between graphene oxide and the polyurethane adhesive is solved, the prepared graphene oxide modified polyurethane material has excellent heat resistance, the peel strength of polyurethane adhesive is improved, the structural performance of the polyurethane adhesive does not need to be fundamentally changed, and the method is convenient and convenient and can be well applied to the fields of buildings and woods.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a preparation method of graphene oxide modified polyurethane materials. Background technique [0002] Polyurethane adhesives have the advantages of high hardness, wear resistance, and excellent adhesion. They are widely used in packaging, electrical appliances, construction, wood, medical and health care, automobiles, and household daily necessities. They play a role in binding, protecting, sealing, Various bonding functions such as insulation and fixing. However, the thermal stability and mechanical properties of polyurethane adhesives are poor, which also limits its application in some aspects. In order to meet the requirement that the polyurethane adhesive can increase the peeling force at a relatively high temperature, so that it can still stick to the adherend well, the polyurethane adhesive is modified to develop polyurethane adhesives with diffe...

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): C09J175/04C09J11/04C09J7/30C09J7/25
Inventor 刘维桥刘欢刘玉刘硕吴岳牟志刚潘君丽肖启振黄寿强
Owner JIANGSU UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com