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

Method for preparing dewatering oil absorption silicon carbide ceramic fiber felt

A technology of silicon carbide ceramics and fiber felt, which is applied in the field of ceramic fiber felt, can solve the problems of secondary pollution, poor high temperature resistance of polymers, etc., and achieve high adsorption efficiency, excellent hydrophobic and oil absorption characteristics, and excellent high temperature resistance.

Active Publication Date: 2013-01-16
LVNA TECH CO LTD
View PDF6 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Donghua University (Marine Pollution Bulletin 2012, 62:374-352; Nanoscale, 2012, 4:176-182) prepared porous PS fiber cotton by electrospinning, which has good hydrophobic and oil-absorbing properties, but due to the high temperature resistance of the polymer Poor, and the use is one-time, easy to cause secondary pollution

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 dewatering oil absorption silicon carbide ceramic fiber felt
  • Method for preparing dewatering oil absorption silicon carbide ceramic fiber felt
  • Method for preparing dewatering oil absorption silicon carbide ceramic fiber felt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mixed solvents of xylene, tetrahydrofuran and dimethylformamide were prepared at a volume ratio of 3:1:1. Add 5 g of polyaluminocarbosilane into 5 mL of the mixed solvent and stir thoroughly for 6 h to obtain a polyaluminocarbosilane solution with a concentration of 1 g / mL. After filling this solution into a glass syringe, the spinneret was 8 # Electrospinning was carried out with metal needles at an output voltage of 20kV, an injection flow rate of 2mL / h, and a roller acceptance distance of 8cm at room temperature. After spinning for 2 hours, a polyaluminocarbosilane fiber felt was obtained; then dried at 50°C for 2 hours , heated to 200°C in the air for 3 hours for cross-linking, then pyrolyzed at 1000°C under a nitrogen atmosphere to obtain silicon carbide ceramic fiber felt; finally, after 24 hours of ethanol impregnation, 15 minutes of ultrasonication, and 2 hours of drying at 120°C, a hydrophobic oil-absorbing fiber felt was obtained. Silicon carbide ceramic fibe...

Embodiment 2

[0025] Prepare a mixed solvent of xylene and dimethylformamide at a volume ratio of 7:3. Add 4.5 g of polyaluminocarbosilane into 5 mL of the mixed solvent and stir thoroughly for 4 h to obtain a polyaluminocarbosilane solution with a concentration of 0.9 g / mL. After filling this solution into a glass syringe, the spinneret was 8 # Metal needle, electrospinning at an output voltage of 20kV, an injection flow rate of 2.0mL / h, a flat aluminum foil collection distance of 10cm, and room temperature, and obtain a polyaluminocarbosilane fiber mat after spinning for 3 hours; then, dry the fiber mat at 50°C 2h, heat up to 200°C in the air and hold for 3h for cross-linking; then, perform pyrolysis at 1200°C under nitrogen atmosphere to obtain silicon carbide ceramic fiber felt; finally, after 24h of acetone impregnation, 30min of ultrasonication, and 2h of drying at 100°C, the hydrophobic Oil-absorbing silicon carbide ceramic fiber felt.

[0026] After testing, the average contact an...

Embodiment 3

[0028] Prepare a mixed solvent of toluene, acetone and ethanol at a volume ratio of 3:1:1. Weigh 6 g of polyaluminocarbosilane and add it into 5 mL of mixed solvent and stir thoroughly for 6 h to obtain a polyaluminocarbosilane solution with a concentration of 1.2 g / mL. After filling this solution into a glass syringe, the spinneret was 12 # Electrospinning with metal needles at room temperature with an output voltage of 25kV, an injection flow rate of 2mL / h, and a drum receiving distance of 12cm. Polyaluminocarbosilane fiber mats were obtained after spinning for 2.5 hours; then dried at 50°C 2h, heat up to 200°C in air and hold for 3h for cross-linking, then, pyrolyze at 1400°C under nitrogen atmosphere to obtain silicon carbide ceramic fiber felt; finally, after 24h impregnation with ether, 15min ultrasonication, and 2h drying at 70°C, hydrophobic Oil-absorbing silicon carbide ceramic fiber felt.

[0029] After testing, the average contact angle of the silicon carbide fibe...

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
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a dewatering oil absorption silicon carbide ceramic felt and relates to a ceramic fiber felt. According to the dewatering oil absorption silicon carbide ceramic fiber felt prepared by the method, the phenomena of melting and aging under severe conditions such as high temperature and acid and alkaline are avoided, the technology is simple, the specific surface area is large, the adsorption efficiency is high, the fiber felt is light and soft, has good strength and toughness, and the preparation method can be used repeatedly in the water treatment field. The method comprises the following steps of: (1) preparing silicon-containing polymer solution, (2) electrostatic spinning, (3) thermal treatment and (4) surface treatment.

Description

technical field [0001] The invention relates to a ceramic fiber felt, in particular to a method for preparing a hydrophobic and oil-absorbing silicon carbide ceramic fiber felt that can be used in harsh environments such as high temperature resistance and corrosion resistance. Background technique [0002] Oil pollution is extremely destructive to ecology and the environment. As the use and transportation of crude oil and various oil products have become an integral part of modern life, oil spills of various scales have become more frequent. Causing great public attention, this forces mankind to urgently need to develop a large number of excellent hydrophobic and oil-absorbing materials. The existing hydrophobic and oil-absorbing properties are mainly organic synthetic materials, such as polypropylene and polyurethane foam, etc. Among them, fiber mats are easy to construct and easy to recycle, but under harsh conditions such as high temperature, acid and alkali, organic fib...

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): D04H1/728D04H1/4382D01D5/00D01D10/02D06B9/00D06B13/00D01F9/10
Inventor 余煜玺陈勇赖德林杨露
Owner LVNA TECH CO LTD
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