Method for preparing chrysotile nano fiber

A nanofiber and serpentine technology, which is applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problem of not being able to peel off nanofibers from serpentine fibers, and achieve the effects of good crystallinity, labor saving, and high purity

Inactive Publication Date: 2010-07-14
CENT SOUTH UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods only disperse the large fiber bundles in asbestos into small fiber bundles, and cannot peel off the chrysotile fibers one by one until forming single nanofibers

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
  • Method for preparing chrysotile nano fiber
  • Method for preparing chrysotile nano fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] After purifying grade 6 chrysotile from a certain asbestos mine, take 10 g and add it into an aqueous solution with a volume of 1 L and a concentration of sodium diisooctyl sulfosuccinate of 2 g / L, and soak for 2 hours (note: diisooctyl sulfosuccinate The critical micelle concentration of sodium bicarbonate is about 1.08g / L; its saturated adsorption capacity on the surface of chrysotile is about 180mg / g). Then use a high-speed emulsifying disperser to stir and disperse the above mixed solution for 60 minutes at a speed of 6000 rpm. After the dispersion is completed, a yellow-white homogeneous asbestos colloidal solution will be obtained. The solution is centrifuged at 4000 rpm for 1 min to remove a small amount of fine impurities contained therein. The color of the asbestos colloidal solution after centrifugation is whiter and brighter, and it is filtered by suction, and washed repeatedly with distilled water for 6 to 8 times to remove the sodium diisooctyl sulfosuccina...

Embodiment 2

[0023] After purifying the asbestos tailings of an asbestos mine, take 10 g and add it to an aqueous solution with a volume of 1 L and a concentration of sodium dodecylbenzenesulfonate of 1.6 g / L, soak for 2 hours (note: dodecylbenzenesulfonic acid The critical micelle concentration of sodium is about 557mg / L; its saturated adsorption capacity on the surface of chrysotile is about 141mg / g). Then use a high-speed emulsifying disperser to stir and disperse the above mixed solution for 60 minutes at a speed of 6000 rpm. After the dispersion is completed, an off-white homogeneous asbestos colloidal solution will be obtained. The solution is centrifuged at 4000 rpm for 1 min to remove a small amount of fine impurities contained therein. The color of the asbestos colloidal solution after centrifugation is whiter and brighter. It is suction filtered and washed repeatedly with distilled water for 6 to 8 times to remove the sodium dodecylbenzenesulfonate remaining in the solution or ph...

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
diameteraaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention is a method for preparing a chrysotile nanofiber, comprising the steps of: using chrysotile commercial asbestos or asbestos gangue as raw materials, and purifying the raw material with water washing purification; mixing the purified raw material with anion surface active agent and water and soaking; dispersing; centrifugating and obtaining a white chrysotile nanofiber product by liquid-solid separation. And it can implement large-scale production and has a diameter generally 30-60 nm long, a length greater than 10 um, high purity, good crystallization degree, and relatively uniform appearance distribution.

Description

[technical field] [0001] The invention relates to a method for preparing chrysotile nanofibers, which belongs to the field of preparation and application of inorganic non-metallic materials, mineral materials and ultrafine materials. [Background technique] [0002] Since the Japanese scientist Iijima discovered carbon nanotubes in 1991, many types of one-dimensional nanofibers (including nanowires, nanotubes, nanorods, etc.) have been prepared successively. Because of their special structure, morphology characteristics, and potential wide application prospects in many fields, one-dimensional nanomaterials have attracted more and more attention, and related preparation, performance, and application research are in the ascendant. Due to the shortcomings of artificially synthesized one-dimensional nanomaterials such as high cost and complicated process, the preparation of nanofibers from cheap natural minerals and biological materials has gradually attracted people's attention....

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): C03B37/00
Inventor 冯其明刘琨杨艳霞张国范欧乐明卢毅屏
Owner CENT SOUTH UNIV
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