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

Method for preparing polyfluortetraethylene fiber with dioxin decomposition function

A polytetrafluoroethylene and dioxin technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problem of catalyst loss, poor bonding fastness of catalyst and PTFE, lack of connectable components, etc. problem, to ensure catalytic efficiency and prevent loss

Inactive Publication Date: 2009-11-18
ZHEJIANG SCI-TECH UNIV
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above patents relate to polytetrafluoroethylene fibers or films with added catalysts (200610154943.5, 200810060356.9, 200610155052.1, 200810124334.4, 200710069975.X, 200810124335.9), but they are all blended with catalysts and polytetrafluoroethylene. Lack of connectable components, so the bonding fastness between the catalyst and PTFE is poor
When fibers are needled into felt and made into filter bags for waste incineration, the high-temperature exhaust gas impacts the filter bag at a certain wind speed, so it is easy to cause the loss of catalyst, so that the filter bag quickly loses its ability to decompose dioxins.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Surface modification of catalyst powder: Pour polytetrafluoroethylene emulsion (SFN-1, provided by Zhonghao Chenguang Chemical Research Institute) into catalyst powder (5 micron diameter, provided by BASF, Germany) (catalyst and polytetrafluoroethylene The weight ratio of the ethylene emulsion is 1:0.01), stirring, and drying the moisture in the emulsion in an oven at 105°C;

[0030]2. Mixing: mix polytetrafluoroethylene resin powder (Dakin Corporation F106 in Japan), surface-modified catalyst powder (by weight ratio 1:0.3, and then add liquid paraffin (polytetrafluoroethylene resin powder to The weight ratio of liquid paraffin is 1:0.2) and mix evenly, let stand at a temperature of 20°C for 144 hours, and then stand at a temperature of 40°C for 10 hours to fully mix the resin powder and liquid lubricant to form polytetrafluoroethylene Vinyl materials;

[0031] 3. Compacting and calendering: press the polytetrafluoroethylene material on a compacting machine at 20°C ...

Embodiment 2

[0037] 1. Surface modification of catalyst powder: Pour polytetrafluoroethylene emulsion (SFN-3, provided by Zhonghao Chenguang Chemical Research Institute) into catalyst powder (1 micron diameter, provided by German BASF company) (catalyst and polytetrafluoroethylene The weight ratio of the ethylene emulsion is 1:1), stirring, and drying the moisture in the emulsion in an oven at 105°C;

[0038] 2. Mixing: Mix polytetrafluoroethylene resin powder (Dakin Corporation F106 in Japan) and surface-modified catalyst powder uniformly in a weight ratio of 1:0.6, then add petroleum ether (polytetrafluoroethylene resin powder has an effect on petroleum The weight ratio of ether is 1:0.25) and mix evenly, let stand at a temperature of 30°C for 121 hours, and then stand at a temperature of 60°C for 12 hours, so that the resin powder and liquid lubricant are fully mixed to form polytetrafluoroethylene materials;

[0039] 3. Compacting and calendering: press the polytetrafluoroethylene mat...

Embodiment 3

[0045] 1. Surface modification of catalyst powder: Pour polytetrafluoroethylene emulsion (SFN-A and SFN-1, the weight ratio is 1:1, provided by Zhonghao Chenguang Chemical Research Institute) into catalyst powder (20 nanometer diameter, Germany BASF company provides) (the weight ratio of catalyst and polytetrafluoroethylene emulsion is 1: 0.5), stir, and the moisture in the emulsion is dried in the baking oven of 105 ℃;

[0046] 2. Mixing: mix polytetrafluoroethylene resin powder (CD123 of Japan Asahi Glass Co., Ltd.) and surface-modified catalyst powder in a weight ratio of 1:0.4, and then add kerosene (the weight of polytetrafluoroethylene resin powder to kerosene ratio of 1:0.28) and mix evenly, let stand at a temperature of 40°C for 144 hours, then stand at a temperature of 80°C for 16 hours to fully mix the resin powder and liquid lubricant to form a polytetrafluoroethylene material;

[0047] 3. Compacting and calendering: press the polytetrafluoroethylene material on a c...

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 relates to a method for preparing polyfluortetraethylene fiber with dioxin decomposition function. The method comprises the following steps: firstly, polyfluortetraethylene emulsion is adopted to carry out surface modification on dioxin decomposition catalyst powder; then, the polyfluortetraethylene resin powder and the modified catalyst powder are mixed, and are mixed with liquid lubricant to process the polyfluortetraethylene fiber through extruding, rolling, vertical stretching, sintering, molding, fiber opening and other processes. The method can effectively avoid loss of catalyst powder in the fiber during using. The fiber material can be widely applied to the dust-removal and waste gas decomposition of high-temperature tail gas. Compared with the prior art, the method has the advantages of simple and easy process, low manufacturing cost, non pollution and the like.

Description

technical field [0001] The invention relates to a method for preparing fibers, in particular to a method for preparing polytetrafluoroethylene fibers with dioxin decomposition function. Background technique [0002] With the rapid development of modern industrialization in various countries in the world, air pollution has become an increasingly serious global problem. The emission and control of waste gases such as dioxins, furans, nitrogen oxides, and sulfides have attracted the attention of countries all over the world. Municipal solid waste incineration has become one of the most important and effective technologies for waste disposal in various countries. Waste incineration treatment can not only turn waste into treasure, but also regenerate energy resources through gas-electric co-generation, and reduce the volume of waste by about 90%. However, the incineration process will inevitably produce a large amount of pollutants, such as particulate matter, acid gas, heavy me...

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): D01F6/48D01F1/10D01D5/42
Inventor 金王勇王芳赵小泷李琴红郭玉海陈建勇来侃张华鹏
Owner ZHEJIANG SCI-TECH UNIV
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