Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for producing polytetrafluoroethylene regenerative powder

A technology of polytetrafluoroethylene and recycled powder, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of follow-up process influence, high water content in powder, low molecular activity, etc., and achieve uniform texture and no foaming Effect

Active Publication Date: 2009-07-15
ZHEJIANG SONGHUA NEW MATERIAL CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical defects that the above-mentioned polytetrafluoroethylene powder is regenerated, the molecular activity is low, the shrinkage ratio increases, and the water content in the powder is relatively high, which affects the subsequent process. An object of the present invention is to provide a The preparation method of polytetrafluoroethylene waste recycled powder with simple process and the powder produced can meet the requirements of various production processes

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
  • Process for producing polytetrafluoroethylene regenerative powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings, but it is not limited by the embodiment.

[0024] Such as figure 1 A kind of preparation method of polytetrafluoroethylene regenerated powder shown, figure 1 In addition to the hot extrusion process shown, it involves the following steps:

[0025] 1. Impurity removal treatment. Cut off large pieces of Teflon scrap, wash, spin dry, and scrape away surface stains.

[0026] 2. Crush and grind. Cut the above-mentioned massive polytetrafluoroethylene waste into strips, and grind them into powder with emery wheels.

[0027] 3. Dry. The polytetrafluoroethylene powder obtained above is evenly dried in an oven, and the temperature of the oven is set at 100-200°C.

[0028] 4. Sieve. Sieve the powder with an iron sieve to make the powder particles evenly reach 100-350 mesh.

[0029] 5. Sintering. The powder obtained above is sintered...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing politef waste regenerate powder and relative rod. The inventive method comprises that 1, washing and removing foreign material, 2, breaking, grinding, screening, 3, sintering, 4, cutting bars, 5, preparing particles, 6, packing and storing. With inventive method, the politef regenerate powder can reach the property of original powder, to produce variable politef products. In addition, the powder can be thermally extruded into politef regenerate rod, with uniform mass and non foam condition.

Description

technical field [0001] The invention relates to the field of regeneration and utilization of polytetrafluoroethylene waste, in particular to a polytetrafluoroethylene waste regenerated powder, a preparation method thereof and a rod prepared therefrom. Background technique [0002] PTFE plastic is an engineering plastic with excellent performance. It has good self-lubricating performance, low friction coefficient, high and low temperature resistance, corrosion resistance, good insulation performance and non-stickiness. It is widely used in machinery, electronics, petroleum, Chemical, food, light industry and other industries. Due to the non-natural degradability of PTFE plastics, discarded PTFE plastics will cause great pollution to the environment. Therefore, how to recycle polytetrafluoroethylene waste and turn waste into treasure has become a research direction. [0003] Existing polytetrafluoroethylene waste regeneration technology discloses a kind of regeneration polyt...

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): B29B9/02B29B17/00B29B17/04B29C67/04B29C47/00B29K27/18
CPCY02W30/62
Inventor 杨根源
Owner ZHEJIANG SONGHUA NEW MATERIAL CO LTD