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

Production method of polytetrafluoroethylene filter material substrate for dust collectors

A polytetrafluoroethylene, production method technology, applied in chemical instruments and methods, separation methods, filtration separation and other directions, can solve the problems of shortening the service life of the filter material of the dust collector, falling off of the PTFE film, reducing the dust removal effect, etc., to improve the dust removal effect. Filtration effect, prolonging service life and reducing process cost

Inactive Publication Date: 2013-08-14
SHANGHAI QIZHONG MECHANICAL & ELECTRICAL EQUIP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional industrial dust filter base material is mainly made of non-woven fabric or glass fiber base material, while the peritoneum usually uses PTFE film. These traditional base materials are usually bonded to the PTFE film through adhesives. However, The properties of the binder are easy to change at high temperature, causing the PTFE film to fall off, seriously affecting the service life of the filter material of the dust collector and reducing the dust removal effect

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 Construction

[0013] The embodiment of the present invention a kind of preparation method of polytetrafluoroethylene film-coated filter material, described method comprises the following steps:

[0014] (1) Mixing: mix 25% (weight ratio) of low surface tension lubricating oil in the polytetrafluoroethylene micropowder, stir evenly;

[0015] (2) Sieving: use 24 mesh filter sieves to sieve the above mixture;

[0016] (3) Preforming: heating the sieved mixture at 35°C for 27 hours;

[0017] (4) Extrusion: the above-mentioned preformed raw materials are loaded into an extruder, extruded at a speed of 7mm / min, the extruded diameter is 17mm, the aspect ratio is 25, and the cone angle is 30°;

[0018] (5) Calendering: put the extruded raw materials into a calender, and carry out the calendering operation at a temperature of 170°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 discloses a production method of a polytetrafluoroethylene filter material substrate for dust collectors, which comprises the following steps: (1) mixing: mixing 25 wt% of low-surface-tension lubricating oil in polytetrafluoroethylene micropowder, and stirring uniformly; (2) screening: screening the mixture with a 24-mesh filter sieve; (3) preforming: heating the screened mixture at 35 DEG C for 27 hours; (4) extrusion: adding the preformed raw material into an extruding machine, and extruding at the speed of 7mm / minute, wherein the extrusion diameter is 17mm, the length-to-diameter ratio is 25, and the cone angle is 30 degrees; and (5) calendering: adding the extruded raw material into a calender, and calendering at 170 DEG C.

Description

technical field [0001] The invention relates to a filter material substrate, in particular to a production method of a polytetrafluoroethylene filter material substrate for a vacuum cleaner. Background technique [0002] Due to its unique properties, the global production and consumption of fluororesin have increased rapidly. At present, the global consumption of fluororesin is about 120,000 tons, of which about 70% is polytetrafluoroethylene (PTFE). Although PTFE has good physical and chemical properties, there are also some defects, such as poor mechanical properties, large linear expansion coefficient, poor creep resistance, easy cold flow, poor wear resistance, difficult molding and secondary processing, etc. Subject to certain restrictions. With the rapid increase of PTFE production capacity in my country, strengthening the research and application of PTFE modification technology and developing new and efficient PTFE composite materials has become the current research ...

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): B01D39/00B01D46/02
Inventor 倪卫中
Owner SHANGHAI QIZHONG MECHANICAL & ELECTRICAL EQUIP
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