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

Preparation method of graphene oxide modified waterborne polyurethane anti-corrosive emulsion

A water-based polyurethane and graphene modification technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve problems such as uniform dispersion, coating defects, and graphene is difficult to play a physical partition effect, and achieves improved dispersion. Stability, the effect of improving shielding ability

Active Publication Date: 2018-04-06
海安常州大学高新技术研发中心
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blending modification of graphene and polyurethane materials has been reported in the literature, but there is a strong van der Waals force between the graphene sheets, which makes it difficult to disperse uniformly in the resin system, and the prepared composite coating is prone to produce graphite during the placement process. Graphene aggregates, making it difficult for graphene to exert its physical partition effect, and even form coating defects, which has caused great difficulties for the further popularization and application of graphene.

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 waterborne polyurethane anti-corrosive emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 100 parts by mass of N,N-dimethylformamide, 20 parts by mass of graphene oxide, 1 part by mass of triethylamine, and 2 parts by mass of glycidyl neodecanoate in the reactor, and react at 130°C for 4 hours. The reaction material is cooled to 30°C, centrifuged, and the centrifugal filter cake is placed in a vacuum dryer at 80°C, controlled with an absolute pressure of ≤20Pa, and dried for 4 hours to obtain modified graphene oxide;

[0023] Add 0.2 parts by mass of the modified graphene oxide obtained in step 1, 25 parts by mass of isophorone diisocyanate, and 25 parts by mass of poly-1,4-butylene adipate, and react at 85°C for 3 hours , cooled to 60°C, and then added 2 parts by mass of dibutyltin dilaurate, 6 parts by mass of N-methylpyrrolidone, 10 parts by mass of E-44 epoxy resin, 8 parts by mass of 2,2-dimethylolpropionic acid , 2 parts by mass of trimethylolpropane were reacted for 5 hours, 4 parts by mass of triethylamine was added at 60°C for 1 hour, 70 parts b...

Embodiment 2

[0029] Add 100 parts by mass of N,N-dimethylformamide, 40 parts by mass of graphene oxide, 2 parts by mass of N-methylimidazole, and 4 parts by mass of glycidyl neodecanoate in the reactor, and react at 120°C for 5 hours , cooling the reaction material to 30°C, centrifuging, placing the centrifugal filter cake in a vacuum dryer at 80°C, controlling the absolute pressure ≤ 20Pa, and drying for 4 hours to obtain modified graphene oxide.

[0030] Add 0.1 parts by mass of the modified graphene oxide obtained in step 1, 20 parts by mass of isophorone diisocyanate, and 20 parts by mass of poly-1,4-butylene adipate, and react at 85°C for 3 hours , cooled to 60°C, and then added 4 parts by mass of dibutyltin dilaurate, 8 parts by mass of N-methylpyrrolidone, 5 parts by mass of E-20 type epoxy resin, 10 parts by mass of 2,2-dimethylolpropionic acid , 1 mass part of trimethylolpropane was reacted for 5 hours, 3 mass parts of triethylamine was added at 60°C for 1 hour, 90 mass parts of d...

Embodiment 3

[0032] Add 100 parts by mass of N,N-dimethylformamide, 60 parts by mass of graphene oxide, 3 parts by mass of triphenylphosphine, and 3 parts by mass of glycidyl neodecanoate into the reactor, and react at 150°C for 3 hours. The reaction material was cooled to 30°C, centrifuged, and the centrifugal filter cake was placed in a vacuum dryer at 80°C, controlled with an absolute pressure of ≤20Pa, and dried for 4 hours to obtain modified graphene oxide.

[0033] Add 0.5 parts by mass of the modified graphene oxide obtained in step 1, 40 parts by mass of isophorone diisocyanate, and 40 parts by mass of poly-1,4-butylene adipate, and react at 85°C for 3 hours , cooled to 60°C, and then added 5 parts by mass of dibutyltin dilaurate, 5 parts by mass of N-methylpyrrolidone, 15 parts by mass of E-51 epoxy resin, 5 parts by mass of 2,2-dimethylol propionic acid , 3 parts by mass of trimethylolpropane were reacted for 5 hours, 4 parts by mass of triethylamine was added at 60°C for 1 hour,...

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 relates to a preparation method of a graphene oxide modified waterborne polyurethane anti-corrosive emulsion, relating to the technical field of preparation of aqueous coatings. The preparation method comprises the following steps: firstly, mixing N,N-dimethylformamide, graphene oxide, a catalyst and glycidyl neocyanate to react to obtain modified graphene oxide; then mixing the graphene oxide, isophorone diisocyanate and polyadipic acid-1,4-butanediol ester, raising the temperature to 85 DEG Ca and then reducing the temperature to 60 DEG C; then adding dibutyltin dilaurate, 5-N-methyl pyrrolidone, epoxy resin, 2,2-dimethylolpropionic acid and trimethylolpropane to react; adding triethylamine to react at the temperature of a reaction material of 60 DEG C; then adding deionized water at 60 DEG C to react; reducing the temperature to 40 DEG C; carrying out filtration; and taking the filtered object to obtain the graphene oxide modified waterborne polyurethane anti-corrosiveemulsion. The shielding capacity of a graphene oxide sheet layer can be further improved by means of hydrophobic effect formed by a long alkyl chain grafted to the surface of graphene oxide.

Description

technical field [0001] The invention relates to the technical field of water-based paint preparation. Background technique [0002] Metals are prone to corrosion damage and material aging in various complex environments. Coating high-performance anti-corrosion coatings for long-term corrosion protection can greatly reduce maintenance frequency, reduce maintenance costs, and prolong service life. Graphene is based on sp 2 The single-layer two-dimensional honeycomb crystal structure formed by the close packing of hybrid forms has a large specific surface area and excellent electrical, mechanical, thermal and optical properties. By introducing graphene, the adhesion, impact resistance and other properties of the coating can be enhanced, as well as the shielding and barrier performance to the medium, while the thickness of the coating film can be greatly reduced, and the anti-corrosion life of the coating can be improved. Therefore, the composite material formed by graphene a...

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
IPC IPC(8): C08G18/12C08G18/38C08G18/40C08G18/42C08G18/58C08G18/65C08G18/66C08G18/75C09D175/06C09D5/08
Inventor 方永勤梅俊龙王瑾许亮
Owner 海安常州大学高新技术研发中心
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