CN1833766A - Method of preparing macromolecular breathable film - Google Patents
Method of preparing macromolecular breathable film Download PDFInfo
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- CN1833766A CN1833766A CN 200610054095 CN200610054095A CN1833766A CN 1833766 A CN1833766 A CN 1833766A CN 200610054095 CN200610054095 CN 200610054095 CN 200610054095 A CN200610054095 A CN 200610054095A CN 1833766 A CN1833766 A CN 1833766A
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A gas-permeable high-molecular membrane for automatically separating oil from gas, that is, separating H2, CO, CH4, C2H4, C2H2 and C2H6 from transformer oil is prepared through providing raw materials, baking, mixing preheating, heating, die pressing, cooling, heat treating and turning. It has high effect and short time.
Description
Technical field
The present invention relates to the preparation method of macromolecular breathable film in the transformer oil.
Background technology
Single fluorine film that generally adopts in the world or rubber membrane carry out the automatic gas separated infiltration of oil gas in the transformer oil at present, and practical application experience shows: to the H of insulation fault generation in the transformer oil
2, CO, CH
4, C
2H
4, C
2H
2, C
2H
6The permeability of six kinds of dissolved gases is low, all is lower than 0.3: 1 at the gas concentration in every kind of gas osmotic equilibrium rear gas chamber and the ratio of oil dissolved gas concentration, and equilibration time is long, is 7～15 days, can not realize effective infiltration of above-mentioned six kinds of gases.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of macromolecular breathable film, the H that it is produced insulation fault in the transformer oil
2, CO, CH
4, C
2H
4, C
2H
2, C
2H
6The permeance property of six kinds of dissolved gases is good, and equilibration time is short, is beneficial to H
2, CO, CH
4, C
2H
4, C
2H
2, C
2H
6Effective infiltration of six kinds of dissolved gases.
For achieving the above object, technical scheme of the present invention is:
A kind of preparation method of macromolecular breathable film, it is characterized in that this method in the following order step carry out:
(1) preparation of raw material: buy polytetrafluoroethylene (PTFE) and polyhexafluoropropylene;
(2) curing of raw material: above-mentioned raw materials is placed container respectively, puts into enameling furnace, be baked onto 150～200 ℃ after, be incubated 4～6 hours;
(3) preparation of raw material: the raw material after will curing is prepared by following component and percentage by weight: polytetrafluoroethylene (PTFE) 80～85%, polyhexafluoropropylene 15～20%;
(4) heat after the preheating: the raw material after will preparing stirs and places container, puts into enameling furnace, when being preheating to 200～300 ℃, is incubated 3～5 hours, after continuing to be heated to 300～380 ℃, is incubated 4～6 hours again;
(5) cool off after the compression molding: the raw material after will heating places mould, and by forcing press compression moulding, molding pressure is 50～100kg/cm
2, 0.5～1 hour press time, the ventilative thickness after the compacting is 0.05～0.1mm;
(6) heat treatment: the ventilated membrane of compression moulding is put into enameling furnace, be heated to 200～300 ℃, be incubated and come out of the stove after 10～20 hours, be cooled to room temperature;
(7) turning: with lathe with the cooled ventilated membrane turning 80～150mm that grows up, the sheet of wide 80～150mm.
The present invention has following technique effect:
To macromolecular breathable film infiltration H in the transformer oil
2, CO, CH
4, C
2H
4, C
2H
2, C
2H
6Six kinds of dissolved gases, its osmotic effect are to weigh by the ratio size of gas concentration in the gas osmotic equilibrium rear gas chamber and oil dissolved gas concentration and osmotic equilibrium time.By technical scheme of the present invention, our experiments show that: the gas concentration in the gas osmotic equilibrium rear gas chamber and the ratio H of oil dissolved gas concentration
2Be 8～12: 1, CO is 4～6: 1, CH
4Be 2～4: 1, C
2H
4Be 0.3～0.6: 1, C
2H
2Be 0.5～0.8: 1, C
2H
6Be 0.35～0.5: 1, all be higher than the ratio 0.3: 1 of the single fluorine film that generally adopts in the world at present or rubber membrane; The osmotic equilibrium time is 2～3 days, is shorter than 7～15 days osmotic equilibrium time of single fluorine film or rubber membrane, helps realizing H in the transformer oil
2, CO, CH
4, C
2H
4, C
2H
2, C
2H
6Effective infiltration of six kinds of dissolved gases.
Description of drawings
Fig. 1 is a preparation method's of the present invention FB(flow block).
The specific embodiment
Embodiment 1: to the preparation method's of macromolecular breathable film flow process, polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material of buying placed container respectively, puts into enameling furnace, be baked onto 200 ℃ after, be incubated 6 hours; By polytetrafluoroethylene (PTFE) 80%, polyhexafluoropropylene 20% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 300 ℃, be incubated 5 hours, after continuing again to be heated to 380 ℃, be incubated 6 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 100kg/cm
2, 1 hour press time, the ventilative thickness after the compacting is 0.05mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 300 ℃, be incubated and come out of the stove after 20 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 150mm, the sheet of wide 150mm.
Embodiment 2: to the preparation method's of macromolecular breathable film flow process, polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material of buying placed container respectively, puts into enameling furnace, be baked onto 175 ℃ after, be incubated 5 hours; By polytetrafluoroethylene (PTFE) 82.5%, polyhexafluoropropylene 17.5% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 250 ℃, be incubated 4 hours, after continuing again to be heated to 340 ℃, be incubated 5 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 75kg/cm
2, 0.75 hour press time, the ventilative thickness after the compacting is 0.075mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 250 ℃, be incubated and come out of the stove after 15 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 120mm, the sheet of wide 120mm.
Embodiment 3: to the preparation method's of macromolecular breathable film flow process, polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material of buying placed container respectively, puts into enameling furnace, be baked onto 150 ℃ after, be incubated 4 hours; By polytetrafluoroethylene (PTFE) 85%, polyhexafluoropropylene 15% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 200 ℃, be incubated 3 hours, after continuing again to be heated to 300 ℃, be incubated 4 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 50kg/cm
2, 0.5 hour press time, the ventilative thickness after the compacting is 0.1mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 200 ℃, be incubated and come out of the stove after 10 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 80mm, the sheet of wide 80mm.
Claims (4)
1. the preparation method of a macromolecular breathable film, it is characterized in that this method in the following order step carry out:
(1) preparation of raw material: buy polytetrafluoroethylene (PTFE) and polyhexafluoropropylene;
(2) curing of raw material: above-mentioned raw materials is placed container respectively, puts into enameling furnace, be baked onto 150～200 ℃ after, be incubated 4～6 hours;
(3) preparation of raw material: the raw material after will curing is prepared by following component and percentage by weight: polytetrafluoroethylene (PTFE) 80～85%, polyhexafluoropropylene 15～20%;
(4) heat after the preheating: the raw material after will preparing stirs and places container, puts into enameling furnace, when being preheating to 200～300 ℃, is incubated 3～5 hours, after continuing to be heated to 300～380 ℃, is incubated 4～6 hours again;
(5) cool off after the compression molding: the raw material after will heating places mould, and by forcing press compression moulding, molding pressure is 50～100kg/cm
2, 0.5～1 hour press time, the ventilative thickness after the compacting is 0.05～0.1mm;
(6) heat treatment: the ventilated membrane of compression moulding is put into enameling furnace, be heated to 200～300 ℃, be incubated and come out of the stove after 10～20 hours, be cooled to room temperature;
(7) turning: with lathe with the cooled ventilated membrane turning 80～150mm that grows up, the sheet of wide 80～150mm.
2. the preparation method of macromolecular breathable film according to claim 1, it is characterized in that this preparation method carries out in the following order: polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material bought are placed container respectively, put into enameling furnace, after being baked onto 200 ℃, be incubated 6 hours; By polytetrafluoroethylene (PTFE) 80%, polyhexafluoropropylene 20% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 300 ℃, be incubated 5 hours, after continuing again to be heated to 380 ℃, be incubated 6 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 100kg/cm
2, 1 hour press time, the ventilative thickness after the compacting is 0.05mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 300 ℃, be incubated and come out of the stove after 20 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 150mm, the sheet of wide 150mm.
3. the preparation method of macromolecular breathable film according to claim 1, it is characterized in that this preparation method carries out in the following order: polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material bought are placed container respectively, put into enameling furnace, after being baked onto 175 ℃, be incubated 5 hours; By polytetrafluoroethylene (PTFE) 82.5%, polyhexafluoropropylene 17.5% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 250 ℃, be incubated 4 hours, after continuing again to be heated to 340 ℃, be incubated 5 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 75kg/cm
2, 0.75 hour press time, the ventilative thickness after the compacting is 0.075mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 250 ℃, be incubated and come out of the stove after 15 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 120mm, the sheet of wide 120mm.
4. the preparation method of macromolecular breathable film according to claim 1, it is characterized in that this preparation method carries out in the following order: polytetrafluoroethylene (PTFE) and the polyhexafluoropropylene raw material bought are placed container respectively, put into enameling furnace, after being baked onto 150 ℃, be incubated 4 hours; By polytetrafluoroethylene (PTFE) 85%, polyhexafluoropropylene 15% is prepared with the raw material after curing; Raw material after the preparation is stirred and places container, put into enameling furnace, when being preheating to 200 ℃, be incubated 3 hours, after continuing again to be heated to 300 ℃, be incubated 4 hours; Raw material after the heating is placed mould, and by forcing press compression moulding, molding pressure is 50kg/cm
2, 0.5 hour press time, the ventilative thickness after the compacting is 0.1mm; The ventilated membrane of compression moulding is put into enameling furnace, be heated to 200 ℃, be incubated and come out of the stove after 10 hours, be cooled to room temperature; With lathe with cooled ventilated membrane turning growth 80mm, the sheet of wide 80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100540950A CN100336581C (en) | 2006-02-27 | 2006-02-27 | Method of preparing macromolecular breathable film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100540950A CN100336581C (en) | 2006-02-27 | 2006-02-27 | Method of preparing macromolecular breathable film |
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| Publication Number | Publication Date |
|---|---|
| CN1833766A true CN1833766A (en) | 2006-09-20 |
| CN100336581C CN100336581C (en) | 2007-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100540950A Expired - Fee Related CN100336581C (en) | 2006-02-27 | 2006-02-27 | Method of preparing macromolecular breathable film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173022A (en) * | 2010-12-31 | 2011-09-07 | 东莞市新志密封技术有限公司 | Method for preparing semi-finished polytetrafluoroethylene material and mold employed by same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB998807A (en) * | 1961-04-28 | 1965-07-21 | Du Pont | Process for the treatment of polyfluorocarbon surfaces |
| CN1486779A (en) * | 2003-08-12 | 2004-04-07 | 上海交通大学 | Prepn process of porous oil-gas separating film device |
| CN1261195C (en) * | 2003-10-24 | 2006-06-28 | 深圳奥特迅电气设备有限公司 | Oil-gas separating film, its making process and the gas sensor therewith |
-
2006
- 2006-02-27 CN CNB2006100540950A patent/CN100336581C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173022A (en) * | 2010-12-31 | 2011-09-07 | 东莞市新志密封技术有限公司 | Method for preparing semi-finished polytetrafluoroethylene material and mold employed by same |
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| Publication number | Publication date |
|---|---|
| CN100336581C (en) | 2007-09-12 |
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