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

A kind of halloysite nanotube/epoxy resin nanocomposite material

A technology of halloysite nanotubes and nanocomposite materials, which is applied in the field of halloysite nanotubes/epoxy resin nanocomposite materials to achieve enhanced interfacial action, improved mechanical properties, improved dispersion and interface bonding with epoxy resins. Effect

Active Publication Date: 2017-11-14
INST OF CHEM CHINESE ACAD OF SCI +1
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the use of branched polyethyleneimine to graft modified halloysite nanotubes for toughening and reinforcing epoxy resin has not been introduced, but the surface modification of other nanoparticles by polyethyleneimine has been reported

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 halloysite nanotube/epoxy resin nanocomposite material
  • A kind of halloysite nanotube/epoxy resin nanocomposite material
  • A kind of halloysite nanotube/epoxy resin nanocomposite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Acidification of halloysite nanotubes: mix halloysite nanotube particles with 1mol / L hydrochloric acid solution at a mass ratio of 1:20, ultrasonically disperse for 60 minutes, stir for 4 hours, centrifuge, filter, and wash with water until medium properties, acidified halloysite nanotubes were obtained after drying at 110°C for 2 hours;

[0052] (2) Surface modification of halloysite nanotubes by silane coupling agent: prepare a homogeneous suspension with acidified halloysite nanotubes and toluene at a mass ratio of 1:50, and continue ultrasonic treatment for 30 minutes. Add dropwise γ-glycidyl etheroxypropyltrimethoxysilane (KH560) with 20% mass of acidified halloysite nanotubes, and stir and react at 120°C for 4 hours; after the reaction, filter, wash, and dry to obtain surface-modified Halloysite nanotubes with epoxy groups (KH560-HNTs);

[0053] (3) Branched polyethyleneimine grafted halloysite nanotubes: the epoxy group-modified halloysite nanotubes obtained i...

Embodiment 2

[0066] (1) Acidification of halloysite nanotubes: Mix halloysite nanotube particles with 2mol / L sulfuric acid solution at a mass ratio of 1:30, ultrasonically disperse for 30 minutes, stir for 12 hours, centrifuge, filter, and wash with water until neutral ; Import the washed product into a clean container, and dry at 100°C for 3 hours to obtain acidified halloysite nanotubes;

[0067] (2) Surface modification of halloysite nanotubes by silane coupling agent: take halloysite nanotubes by weighing, add 20 times the mass of acetone solution, ultrasonic treatment for 30 minutes; -(3,4-epoxycyclohexyl)ethyltrimethoxysilane (A-186), continue ultrasonic stirring for 30 minutes, add sodium hydroxide solution to make the pH of the mixture neutral, and react at 70°C for 5 hour; after the reaction finishes, filter, wash, dry, obtain the halloysite nanotube that the surface is modified with epoxy group;

[0068] (3) Branched polyethyleneimine grafted halloysite nanotubes: ultrasonically...

Embodiment 3

[0076] (1) Acidification of halloysite nanotubes: halloysite nanotube particles are mixed with 30% hydrogen peroxide at a mass ratio of 1:10, ultrasonically dispersed for 45 minutes to obtain a uniformly dispersed system; transferred to 80°C and stirred for 48 hours, Centrifuge, filter, wash with water until neutral, and dry at 110°C for 2.5 hours to obtain acidified halloysite nanotubes;

[0077] (2) Surface modification of halloysite nanotubes by silane coupling agent: Weigh acidified halloysite nanotubes, add 10 times the mass of ethanol solution (volume ratio of ethanol to water is 95 / 5), and continue ultrasonic treatment for 45 minutes The pH value of the solution is adjusted to 4 to 5 with dilute hydrochloric acid, and γ-glycidyl etheroxypropylmethyldimethoxysilane (AC-661) of acidified halloysite nanotube quality 50% is added dropwise, at 80°C The reaction was stirred for 24 hours. After the reaction is finished, filter, wash, and dry to obtain halloysite nanotubes wit...

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
lengthaaaaaaaaaa
elastic modulusaaaaaaaaaa
impact strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of nanocomposite materials, in particular to a halloysite nanotube / epoxy resin nanocomposite material. The halloysite nanotubes of the present invention are branched polyethyleneimine grafted halloysite nanotubes, and the weight ratio of the branched polyethyleneimine grafted halloysite nanotubes to epoxy resin is 0.2~ 20:100; preferably 0.5-5:100; the present invention grafts hyperbranched polyethyleneimine onto epoxidized HNTs, and the branched structure has abundant amino groups, so that halloysite nanotubes and epoxy resin matrix Stronger chemical bonds or hydrogen bonds are formed between them to enhance the interfacial interaction. The modified halloysite nanotube prepared by the invention can effectively improve the impact resistance of the epoxy resin, reduce the brittle fracture of the epoxy resin, and has broad application prospects in the fields of automobiles, electronics, functional materials, aerospace and the like.

Description

technical field [0001] The invention relates to the field of nanocomposite materials, in particular to a halloysite nanotube / epoxy resin nanocomposite material. Background technique [0002] Halloysite nanotubes are inexpensive natural nanotubes formed from sheets of kaolinite that curl under certain climatic conditions. Generally, the outer diameter of the tube is 40-100 nm, and the length is about 0.2-2 μm. HNTs are double-layer 1:1 aluminosilicates with the molecular formula Al 2 SiO 5 (OH) 4 ·nH 2 O (n=0 or 2), is formed by dislocation and coiling of aluminum-oxygen octahedra in the inner layer and silicon-oxygen tetrahedron in the outer layer, and crystal water exists between the layers. The outer surface of HNTs is mainly composed of Si-O-Si bonds, and the inner wall is mainly composed of aluminum hydroxyl groups. There are silicon / aluminum hydroxyl groups on the crystalline edges of HNTs or the end faces of the tubes, while a small amount of embedded hydroxyl gr...

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): C08L63/00C08K9/04C08K9/06C08K7/00C08K3/34
Inventor 孙攀刘国明吕冬刘学新赵莹董侠周勇苏允兰吴景深王笃金
Owner INST OF CHEM CHINESE ACAD OF SCI
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