Method for preparing hyperdispersant by adopting oxidized graphene and application thereof

A hyperdispersant and graphene technology, applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, inorganic pigment treatment, etc., to achieve the effects of high finish, improved mechanical properties, and improved dispersion performance

Inactive Publication Date: 2014-02-19
江苏科暖热能科技有限公司
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using graphene oxide as the central core of the hyperdispersant, two-step grafting with ethylene triamine and stearic acid finally makes the hydroxyl and epoxy groups on the graphene oxide

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The main raw materials for preparing hyperdispersant in this example: graphene oxide (self-made), ethylene triamine (industrial grade), stearic acid (industrial grade), sodium hydroxide (industrial grade), hydrochloric acid (industrial grade), p-toluenesulfonic acid (technical grade), toluene (technical grade).

[0017] The concrete steps that adopt graphene oxide to prepare hyperdispersant are:

[0018] (1) Add 3 grams of graphene oxide into a 500 ml three-necked flask, then add 250 grams of distilled water to start the vibration, and vibrate for 30 minutes in a 2000 Hz ultrasonic environment to form a uniformly dispersed graphene oxide mixture, and then add 10 grams of ethylene glycol Triamine and 8 grams of sodium hydroxide, and adjust the pH value to 7 with hydrochloric acid, continue ultrasonic dispersion for 3 hours at 90°C, cool to room temperature after the reaction, add water to precipitate, filter under reduced pressure, and wash the product with absolute etha...

Embodiment 2

[0024] The main raw materials for the preparation of hyperdispersants in this example: graphene oxide (self-made), ethylene triamine (industrial grade), stearic acid (industrial grade), sodium hydroxide (industrial grade), hydrochloric acid (industrial grade), p-toluenesulfonic acid (technical grade), toluene (technical grade).

[0025] The concrete steps that adopt graphene oxide to prepare hyperdispersant are:

[0026] (1) Add 6 grams of graphene oxide into a 500 ml three-necked flask, then add 300 grams of distilled water to start the vibration, and vibrate for 30 minutes in a 2000 Hz ultrasonic environment to form a uniformly dispersed graphene oxide mixture, and then add 16 grams of ethylene glycol Triamine and 8 grams of sodium hydroxide, adjust the pH value to 7 with hydrochloric acid, continue ultrasonic dispersion for 4 hours at 85°C, cool to room temperature after the reaction, add water to precipitate, filter under reduced pressure, and wash the product with absolut...

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 discloses a method for preparing hyperdispersant by adopting oxidized graphene and application thereof. The oxidized graphene is adopted as centronucleus of the hyperdispersant; diethylene triamine and stearic acid are adopted to implement two-step grafting, so that the reaction of hydroxy and epoxy radicals on the upper surface of the oxidized graphene disappears to form stable anchoring radicals, and the grafted diethylene triamine and stearic acid are formed to a solvation chain for preferably wetting, dispersing and bridging all components of a wood-plastic composite material. The method provided by the invention adopts the hyperdispersant prepared by the oxidized graphene for applying in the production process of the wood-plastic composite material, so that the incompatibility among plastic resin, filler and wood powder caused by the interface polarity can be effectively eliminated, the dispersing performance thereamong is modified, bridged chemical hydrogen bonds are generated thereamong, and finally, the mechanical property of the material is largely improved.

Description

technical field [0001] The invention belongs to the technical field of dispersant preparation, in particular to a method for preparing a hyperdispersant by using graphene oxide and its application. Background technique [0002] Wood-plastic composites (Wood-Plastic Composites, WPC) is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc. Wood flour, rice husk, straw and other waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce boards or profiles. [0003] Since the main component of wood flour is cellulose, which contains a large number of hydroxyl groups and has strong polarity; while most thermoplastics are non-polar and hydrophobic, the compatibility between the two is poor, and the interface The cohesion is very small, and lubricants can impro...

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): C08K9/04C08K9/02C08K3/04C09C1/46C09C3/08C09C3/06C09C3/04C08L97/02
Inventor 凌敏徐旭郭栋黄超李静静
Owner 江苏科暖热能科技有限公司
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