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

A kind of amidated graphene/nylon 6 nanocomposite material and preparation method thereof

A nanocomposite material and graphene technology, which is applied in the field of amidated graphene/nylon 6 nanocomposite material and its preparation, can solve the problem of low elongation at break and impact strength of composite materials, affecting the performance of composite materials, and the decrease of nylon molecular weight, etc. problems, to achieve good processability, reduce van der Waals force, and increase melt index

Active Publication Date: 2022-05-24
SOUTH CHINA UNIV OF TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carboxyl group on the graphene oxide of this technology is used as the end-capping agent of nylon, which will hinder the growth of nylon chain during the polymerization process, resulting in a decrease in the molecular weight of nylon, which will greatly affect the performance of the composite material synthesized, the elongation at break and the elongation at break of the composite material. The impact strength is low, glass fiber needs to be added to strengthen the composite material, and the preparation process is relatively complicated

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 amidated graphene/nylon 6 nanocomposite material and preparation method thereof
  • A kind of amidated graphene/nylon 6 nanocomposite material and preparation method thereof
  • A kind of amidated graphene/nylon 6 nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of amidated graphene / nylon 6 nanocomposite, comprising the following process steps:

[0040] Step 1, disperse 100 parts of graphene oxide in deionized water to form a dispersion with a concentration of 0.5 mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethyl The carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) molar ratio of MES buffer of 1:1 was stirred at room temperature for 30min to activate the carboxyl group;

[0041] Step 2, adding 5 parts of n-butylamine to the above graphene oxide dispersion liquid, stirring at room temperature for 12h to react, filtering, washing and then vacuum drying to obtain amidated graphene powder;

[0042] Step 3, adding 0.1 parts by mass of amidated graphene powder and 2 parts by mass of deionized water into 100 parts by mass of caprolactam melt, and ultrasonically stirred for 30 min at 80° C. to form a dispersion;

[0043] Step 4: Under nitrogen protection, the above di...

Embodiment 2

[0050] A preparation method of amidated graphene / nylon 6 nanocomposite, comprising the following process steps:

[0051] Step 1, disperse 100 parts of graphene oxide in deionized water to form a dispersion with a concentration of 2mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethyl carbon Diimine hydrochloride (EDC) and N-hydroxysuccinimide (NHS) in MES buffer with a molar ratio of 1:1 were stirred at room temperature for 50 min to activate the carboxyl group;

[0052] Step 2, adding 6 parts of n-butylamine to the above graphene oxide dispersion liquid, stirring at room temperature for 12h to react, filtering, washing and then vacuum drying to obtain amidated graphene powder;

[0053] Step 3, adding 0.3 parts by mass of amidated graphene powder and 4 parts by mass of deionized water into 100 parts by mass of caprolactam melt, and ultrasonically stirred for 60 min at 80° C. to form a dispersion;

[0054] Step 4: Under the protection of nitrogen, t...

Embodiment 3

[0057] A preparation method of amidated graphene / nylon 6 nanocomposite, comprising the following process steps:

[0058] Step 1, disperse 100 parts of graphene oxide in deionized water to prepare a dispersion with a concentration of 1 mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethylcarbon The MES buffer with diimine hydrochloride (EDC) and N-hydroxysuccinimide (NHS) molar ratio of 1.5:1 was stirred at room temperature for 40 min to activate the carboxyl group;

[0059] Step 2, adding 5 parts of n-hexylamine to the above graphene oxide dispersion liquid, stirring at room temperature for 15h to react, filtering, washing and then vacuum drying to obtain amidated graphene powder;

[0060] Step 3, adding 0.2 parts by mass of amidated graphene powder and 2 parts by mass of deionized water into 100 parts by mass of caprolactam melt, and ultrasonically stirred for 40 min at 100° C. to form a dispersion;

[0061] Step 4: Under nitrogen protection, the ...

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
tensile strengthaaaaaaaaaa
impact strengthaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses an amidated graphene / nylon 6 nanocomposite material and a preparation method thereof; the preparation method is to disperse the graphene oxide in deionized water, add a catalyst, stir and activate the carboxyl group at normal temperature, and then add an amino modifier , stirred and reacted at room temperature, filtered, washed, and vacuum-dried to obtain amidated graphene powder; add amidated graphene and deionized water to caprolactam melt, and ultrasonically stir to form a dispersion liquid, and disperse the resulting powder under nitrogen atmosphere The liquid is moved to a high-temperature and high-pressure reactor and heated to 250-270°C to react to obtain a polymer melt; the polymer melt is water-cooled and granulated to obtain a graphene / nylon 6 nanocomposite material; the amidated graphite prepared by the present invention Nylon / nylon 6 nanocomposites have excellent strength, toughness and processability compared with pure nylon 6, and can be used as structural components in auto parts, medical equipment, electronic appliances and other fields.

Description

technical field [0001] The invention relates to a nylon composite material, in particular to an amidated graphene / nylon 6 nanocomposite material and a preparation method thereof. The ultra-low addition amount of graphene in the present invention is an in-situ polymerization method. Background technique [0002] Nylon 6 (PA6) is one of the most representative polyamide engineering plastics. The existence of a large number of amide groups on the molecular chain makes it have the advantages of excellent physical and mechanical properties, excellent self-lubricating properties, and excellent wear resistance; however, its moisture absorption The disadvantages of high strength, brittleness and low impact strength greatly limit the application of PA6. In order to obtain materials with better performance and meet special requirements, people pay more and more attention to the modification of PA6. [0003] Graphene is a two-dimensional, single-atom-thick carbon sheet with a carbon-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): C08G83/00
CPCC08G83/001
Inventor 吴叔青刘滨滨熊其鹏
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