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

Mesoporous macromolecule/silicon oxide nanocomposite with layered channel structure and preparation method thereof

A technology of nanocomposite materials and pore structure, which is applied in the preparation of microspheres, microcapsule preparations, etc.

Inactive Publication Date: 2012-03-28
CHONGQING UNIV OF ARTS & SCI
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of highly ordered mesoporous polymer / silica nanocomposites using PDMS-PEO as a co-template agent.

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
  • Mesoporous macromolecule/silicon oxide nanocomposite with layered channel structure and preparation method thereof
  • Mesoporous macromolecule/silicon oxide nanocomposite with layered channel structure and preparation method thereof
  • Mesoporous macromolecule/silicon oxide nanocomposite with layered channel structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Synthesis of Phenolic Resin Prepolymer

[0041] Melt 0.61g phenol at 40-42°C, add 0.13 g 20 wt% NaOH aqueous solution at this temperature and stir for 10 min, add 1.05 g 37wt% formaldehyde aqueous solution, raise the temperature to 70-75°C for 1 hour, cool down to room temperature, and use 0.6 mol / L HCl solution to adjust the pH value of the solution to 7.0, dehydration under vacuum and reduced pressure for 1 to 2 hours below 50°C. The obtained viscous liquid was dissolved in THF to prepare a 20 wt% solution for use.

Embodiment 2

[0042] Example 2 Preparation of As-made samples

[0043] Dissolve 0.5 g P123 and 0.5 g PDMS-PEO in 30.0 g tetrahydrofuran (THF) and stir at 40 °C for 10 min to obtain a uniform and transparent solution. Then 7.5 g of 20 wt % phenolic resin prepolymer ( M w <500) THF solution, stirred for 0.5h to obtain a homogeneous solution. Transfer the above solution to a petri dish, volatilize at room temperature for 5-8 h, and then place the petri dish in an oven at 100°C for 24 h to obtain a transparent orange-yellow film material. The above materials were scraped off the petri dish and ground into powder to obtain As-made samples.

[0044] The triblock copolymer P123 in this embodiment ( M w = 5800, EO 20 -PO 70 -EO 20 ) was purchased from Aldrich, PDMS-PEO ( M w =3012, DMS 32 -EO 20 ) were purchased from Shenzhen Merrill Chemical Technology Co., Ltd., and other reagents were purchased from Shanghai Chemical Reagent Company. All reagents were not further processed before ...

Embodiment 3

[0045] Example 3 Preparation of Mesoporous Polymer / Silicon Oxide Nanocomposites with One-dimensional Layered Pore Structure

[0046] The As-made sample was placed in a tube furnace for 3 h at 350 °C under the protection of nitrogen gas, and the heating rate was 5 °C / min. The obtained mesoporous polymer / silicon oxide nanocomposite sample is marked as MP-PS-350N.

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 mesoporous macromolecule / silicon oxide nanocomposite with a one-dimensional layered channel structure. The preparation method of the nanocomposite comprises the following steps: using PDMS-PEO and P123 as mixed structure directing agent, and phenolic resin prepolymer as carbon source precursor to mix, reacting to obtain an As-made intermediate, and then roasting to obtain the nanocomposite. In the small angle X-ray scattering (SAXS) map of the As-made intermediate has the diffraction peaks of which ratio of three q values is 1:2:3. The thermal stability range of the layered structure of the nanocomposite is 300-380 DEG C, the spacing of layers is 8-15nm and the specific surface area, pore volume and pore diameter are 500-900m<2> / g, 0.40-0.58cm<3> / g and 4.5-5.6nm respectively. The nanocomposite is particularly suitable for the fields such as low dielectric constant coatings, membrane separation, sensors and optical materials. Meanwhile, the expensive silane reagent is not required to be introduced in the preparation method and the traditional sol-gel process can be avoided, thus the preparation process of the mesoporous macromolecule / silicon oxide nanocomposite can be greatly simplified and a new synthetic route of the economical and reasonable mesoporous macromolecule / silicon oxide nanocomposite with high maneuverability is developed.

Description

technical field [0001] The invention belongs to the technical field of new nanomaterials, in particular to a mesoporous nanocomposite material with a one-dimensional layered pore structure and a preparation method thereof, in particular to a mesoporous polymer / silicon oxide with a one-dimensional layered pore structure Nanocomposites and methods for their preparation. Background technique [0002] Organic / inorganic nanocomposites not only have the characteristics of flexibility, hydrophobicity and easy functionalization of organic components, but also have high thermal stability and mechanical strength of inorganic components. For mesoporous nanocomposites, not only have excellent characteristics such as uniform pore size, orderly arrangement, and continuously adjustable pore diameter in the range of 2-50nm, but also have unique nano-space effects, so they are used in catalysis, adsorption, separation, Optoelectronic devices and electrode materials for supercapacitors hav...

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): B01J13/02
Inventor 刘玉荣
Owner CHONGQING UNIV OF ARTS & 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