CN85100445A - The film of tetrafluoroethylene and vinylidene fluoride copolymers, preparation method and application - Google Patents
The film of tetrafluoroethylene and vinylidene fluoride copolymers, preparation method and application Download PDFInfo
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- CN85100445A CN85100445A CN 85100445 CN85100445A CN85100445A CN 85100445 A CN85100445 A CN 85100445A CN 85100445 CN85100445 CN 85100445 CN 85100445 A CN85100445 A CN 85100445A CN 85100445 A CN85100445 A CN 85100445A
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- film
- tetrafluoroethylene
- vinylidene fluoride
- fluoride copolymers
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Abstract
The film of a kind of tetrafluoroethylene and vinylidene fluoride copolymers, the thickness of this film are the 2-8 micron.Multipolymer consists of the tetrafluoroethylene that contains 8-50% weight and the vinylidene of 92-50% weight.
The method of producing this film comprises uses C
3-C
4Fatty amide is as dimethyl formamide, N,N-DIMETHYLACETAMIDE, C
3-C
6Aliphatic ketone is as the above-mentioned multipolymer of molten Jie of two or more solvent in acetone, the butanone equal solvent, be made into the solution casting film again that weight is 0.5-2%.
This film can be compounded in that intensity is low, on the fragile materials, enlarge their use range.
Description
The present invention is a kind of film of fluoroplastics.Fluoroplastics have excellent mechanical property, chemical stability, thermostability, winter hardiness, performance such as acidproof, alkaline-resisting are the kinds that has excellent comprehensive performance in the plastics, can prepare plate, rod, pipe, film, coating etc. by various working methods, be widely used in the various industrial sectors.Yet thickness is the fluorine plastic film of 2-5 micron, because the manufacture difficulty height, is not reported so far and uses.
The present invention utilizes a kind of tetrafluoroethylene and vinylidene fluoride copolymers.We add mixed solvent and above-mentioned multipolymer wiring solution-forming that a series of organic solvents are formed.Has excellent film-forming properties.With easy film-forming method, obtained the film of 2～8 micron thickness.The tetrafluoroethylene that adopts and the composition of vinylidene fluoride copolymers, wherein tetrafluoroethylene 8～50% vinylidenes that account for weight account for 92～50% of weight.The recommendation of multipolymer is formed, and wherein tetrafluoroethylene accounts for 15～35% of weight, and vinylidene accounts for 85～65% of weight.The organic solvent that is added is to adopt C
3-C
4Fatty amide, as dimethyl formamide, N,N-DIMETHYLACETAMIDE etc., C
3-C
6Aliphatic ketone, mixed solvent as two or more solvent composition in acetone, the butanone equal solvent, film forming process engineering comprises a formulations prepared from solutions, multipolymer concentration in solution is 0.5%～2% of weight, with this solution in sheet glass top casting film forming, film thickness is 2～8 microns, 100～200 ℃ of film-forming temperatures, 30～60 minutes time.
Tetrafluoroethylene and vinylidene film, water white transparency, saturating infrared light is transparent at the infrared light below 7 microns especially.This film is at concentrated hydrochloric acid, hydrofluoric acid, nitric acid, sulfuric acid, phosphoric acid, phenol.50% sodium hydroxide solution has good chemical-resistant reagent and solvent resistance in the solution such as benzene, alcohol, amine, and film strength reaches 100～500kg/cm
2, the specific refractory power of film is 1.39～1.42.
Above-mentioned film of the present invention can be formed matrix materials with various materials, not only can be compounded on the materials such as timber, glass, metal, and it is low also can be compounded in some intensity, on the fragile materials in case moisture, the erosion of corrosive gases improves the intensity of material, enlarges their use range.Also can be used as protection against the tide, the anti-corrosion protection material of infra-red material, metal, crystal etc.For example, in the target surface material in the rpyroelectric infrared image tube, originally the target surface material is triglycine sulfate monocrystalline (being called for short TGS), thermoelectricity capability thickness general and monocrystalline is inversely proportional to, it is 30 microns that TGS is had the thickness of certain self-holding intensity, even the TGS of thickness like this, not only make difficulty, and very easily shaken and break, the yield rate of product is low, use range also is restricted, using 2～5 microns compound back of above-mentioned films target surface thickness can be kept to 12 microns, the sensitivity and the rate of decomposition of image tube increase substantially, and the resolving power when 1 ℃ of the temperature difference is brought up to 220 lines from 120 lines, target surface also is difficult for breaking, and has enlarged its use range.
Case step
Tetrafluoroethylene and vinylidene fluoride copolymers are dissolved in the mixed solvent, treat the complete molten back that is situated between inject on the glass plate that has frame (300 * 200mm), in baking oven, be warming up to certain temperature in the certain hour, the constant temperature certain hour takes out cooling.Take off certain thickness film from sheet glass.
Claims (8)
1, a kind of tetrafluoroethylene and vinylidene fluoride copolymers film is characterized in that containing the multipolymer of vinylidene of tetrafluoroethylene, the 92-50% weight of 8-50% weight.
2, the film of tetrafluoroethylene as claimed in claim 1 and vinylidene fluoride copolymers is characterized in that thickness is 2～8 microns water white film.
3, tetrafluoroethylene as claimed in claim 1 and vinylidene fluoride copolymers film is characterized in that containing the tetrafluoroethylene of 15-35% weight, the vinylidene fluoride copolymers of 85-65% weight.
4, as described tetrafluoroethylene of claim 1,2 or 3 and vinylidene fluoride copolymers method for manufacturing thin film, it is characterized in that comprising C
3-C
4Fatty amide is as dimethyl formamide N,N-DIMETHYLACETAMIDE etc., C
3-C
6Aliphatic ketone is as the molten Jie's multipolymer of the mixed solvent of two or more solvent composition in acetone, the butanone equal solvent, casting film again.
5, the technology of production film as claimed in claim 4 is 0.5%～2% comprising the weight of multipolymer in above-mentioned mixed solvent.
6, the technology of production film as claimed in claim 4 is 100 ℃～200 ℃ comprising film-forming temperature, time 30-60 minute.
7, as the film of described tetrafluoroethylene of claim 1,2 or 3 and vinylidene fluoride copolymers, it is characterized in that and can form matrix materials with various materials, as with the compound formation matrix materials of material such as metal, crystal, infra-red material, glass, metal, timber.
8, as described tetrafluoroethylene of claim 1,2 or 3 and vinylidene fluoride copolymers film, its feature can be formed matrix material with the triglycine sulfate monocrystalline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100445 CN85100445A (en) | 1985-04-01 | 1985-04-01 | The film of tetrafluoroethylene and vinylidene fluoride copolymers, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100445 CN85100445A (en) | 1985-04-01 | 1985-04-01 | The film of tetrafluoroethylene and vinylidene fluoride copolymers, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100445A true CN85100445A (en) | 1986-07-09 |
Family
ID=4791162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100445 Pending CN85100445A (en) | 1985-04-01 | 1985-04-01 | The film of tetrafluoroethylene and vinylidene fluoride copolymers, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100445A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8303609B2 (en) | 2000-09-29 | 2012-11-06 | Cordis Corporation | Coated medical devices |
-
1985
- 1985-04-01 CN CN 85100445 patent/CN85100445A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8303609B2 (en) | 2000-09-29 | 2012-11-06 | Cordis Corporation | Coated medical devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |