JPS54156068A - Production of porous body of polytetrafluoroethylene - Google Patents
Production of porous body of polytetrafluoroethyleneInfo
- Publication number
- JPS54156068A JPS54156068A JP6540778A JP6540778A JPS54156068A JP S54156068 A JPS54156068 A JP S54156068A JP 6540778 A JP6540778 A JP 6540778A JP 6540778 A JP6540778 A JP 6540778A JP S54156068 A JPS54156068 A JP S54156068A
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- blowing agent
- polytetrafluoroethylene
- molded
- heated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- -1 polytetrafluoroethylene Polymers 0.000 title abstract 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract 3
- 239000004810 polytetrafluoroethylene Substances 0.000 title abstract 3
- 239000004604 Blowing Agent Substances 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To obtain a porous body of polytetrafluoroethylene having high porosity and strength through a simple process, by stretching a molded body of polytetrafluoroethylene blended with a blowing agent and a liquid lubricant while the body is heated and sintered.
CONSTITUTION: A blowing agent and preferably 10W30 parts by wt. of a liquid lubricant, e.g., naphtha, is added to 100 parts by wt. of powder of polytetrafluoroethyleme. The mixture thus obtained is molded into a bar or a tube. The molded body is permitted to stand as it is or heated at temperatures of a decomposition point of the blowing agent to the melting point of the molded body to decompose and to expand the blowing agent. Both ends in the direction of stretching of the molded body are placed on the outside of a heating zone. The molded body in the heating zone is heated up to a temperature not lower than the melting point of the molded article, and stretched at least in one direction in a draw ratio of 20W700 % while it is being sintered to give the desired porous body.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53065407A JPS5825334B2 (en) | 1978-05-31 | 1978-05-31 | Manufacturing method of polytetrafluoroethylene porous material |
| GB7918244A GB2025835B (en) | 1978-05-31 | 1979-05-24 | Producing a porous polytetrafluorethylene article |
| DE2921367A DE2921367C2 (en) | 1978-05-31 | 1979-05-25 | Process for the production of porous polytetrafluoroethylene moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53065407A JPS5825334B2 (en) | 1978-05-31 | 1978-05-31 | Manufacturing method of polytetrafluoroethylene porous material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54156068A true JPS54156068A (en) | 1979-12-08 |
| JPS5825334B2 JPS5825334B2 (en) | 1983-05-26 |
Family
ID=13286133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53065407A Expired JPS5825334B2 (en) | 1978-05-31 | 1978-05-31 | Manufacturing method of polytetrafluoroethylene porous material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825334B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995022175A1 (en) * | 1994-02-14 | 1995-08-17 | W.L. Gore & Associates, Inc. | Improved thermally conductive interface |
| US5591034A (en) * | 1994-02-14 | 1997-01-07 | W. L. Gore & Associates, Inc. | Thermally conductive adhesive interface |
| US5738936A (en) * | 1996-06-27 | 1998-04-14 | W. L. Gore & Associates, Inc. | Thermally conductive polytetrafluoroethylene article |
-
1978
- 1978-05-31 JP JP53065407A patent/JPS5825334B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995022175A1 (en) * | 1994-02-14 | 1995-08-17 | W.L. Gore & Associates, Inc. | Improved thermally conductive interface |
| US5591034A (en) * | 1994-02-14 | 1997-01-07 | W. L. Gore & Associates, Inc. | Thermally conductive adhesive interface |
| US5738936A (en) * | 1996-06-27 | 1998-04-14 | W. L. Gore & Associates, Inc. | Thermally conductive polytetrafluoroethylene article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5825334B2 (en) | 1983-05-26 |
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