CN201962439U - Spinneret plate for dry spinning of profiled polyimide fibers - Google Patents
Spinneret plate for dry spinning of profiled polyimide fibers Download PDFInfo
- Publication number
- CN201962439U CN201962439U CN2011200721596U CN201120072159U CN201962439U CN 201962439 U CN201962439 U CN 201962439U CN 2011200721596 U CN2011200721596 U CN 2011200721596U CN 201120072159 U CN201120072159 U CN 201120072159U CN 201962439 U CN201962439 U CN 201962439U
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- spinneret
- spinnerets
- holes
- spinneret plate
- profiled
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Abstract
A spinneret plate used for the dry spinning of profiled polyimide fibers comprises a spinneret plate main body, wherein a plurality of spinneret holes are formed on the spinneret plate main body; each spinneret hole comprises a conical diversion hole and a profiled capillary hole; the conical guide holes are characterized in that the conical degrees of the conical diversion holes range from 0.1 to 0.5; the thicknesses of the capillary holes range from 5 microns to 50 microns; each capillary hole is centrosymmetric, and the sections of the capillary holes are identically or variously shaped like trefoils, quatrefoils, quintefoils, sexfoils, septfoils or octofoils; and the spinneret holes are uniformly arranged on the spinneret plate, and the number of the spinneret holes ranges from 4 to 500. Polyimide fibers produced through the spinneret plate have a larger degree of profile, high strength and smaller size, so that the efficiency of the fibers in intercepting smoke dust from industrial waste gas is effectively improved.
Description
Technical field
The utility model relates to a kind of dry spinning technology, particularly a kind of spinnerets that is used for dry method spinning polyimides profiled filament.
Background technology
As a kind of high-tech fiber, the polyimide fiber material has good chemical stability, the thermomechanical property of excellence and outstanding radiation-resistant property, has become the focus kind of commercial development.P84 fiber based on United States Patent (USP) 3985934 is unique so far business-like polyimide fiber kind, and its fibre section is irregular trilobal, has improved fiber specific surface area effectively, therefore is widely used in industrial waste gas dedusting field.Because blockade on new techniques, the industrialization of present domestic polyimide fiber just in test, and to the exploration of polyimides profiled filament also ground zero.The dry-spinning of polyamic acid slurries is made the polyimide fiber precursor in employing after the cyclisation dehydration is converted into the approach that polyimide fiber also is the preparation polyimide fiber, and owing to can avoid using higher boiling, highly toxic solvent, being proved to be is a kind of process route that quite has the industrialization potentiality.But adopt the report of dry-spinning path of preparing polyimide fiber such as United States Patent (USP) 3415782 and 4640972 at present without any relating to special-shaped polyimide fiber or being used to make the report of the spinnerets of this profiled filament.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed a kind of spinnerets that is used for dry method spinning polyimides profiled filament.The polyimide fiber degree of profile that adopts this spinnerets to obtain is bigger, and can obtain good intensity and lower fiber number, can effectively improve the hold back efficient of fiber to flue dust in the industrial waste gas.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of spinnerets that is used for dry method spinning polyimides profiled filament, comprise the spinnerets main body, be provided with some spinneret orifices on the spinnerets main body, be characterized in: described spinneret orifice is made up of the pod apertures of taper and the pore of abnormity.
The technical problems to be solved in the utility model can also come to realize that further the tapering of pod apertures is 0.1 ~ 0.5 by the following technical programs.
The technical problems to be solved in the utility model can also come to realize that further the thickness of pore is 5 ~ 50 microns by the following technical programs.
The technical problems to be solved in the utility model can also come by the following technical programs to realize that further spinneret orifice is evenly distributed on the spinnerets main body that hole count is 4 ~ 500.
The technical problems to be solved in the utility model can also come further to realize that pore is a centrosymmetric structure by the following technical programs, and its cross sectional shape is one or more in trilobal, quatrefoil, five leaf, sexfoil, seven leaf, the octofoil.
The utility model compared with prior art, the spinnerets that is provided is to aim at the design of dry method spinning polyimides profiled filament, is applicable to the dry spinning characteristic of polyimides precursor fiber.Because there are very strong hydrogen bond complexing in the precursor spinning slurry polyamic acid of dry-spinning polyimides and solvent, cause the evaporation rate of solvent in the solution thread of the exit of pore not catch up with the extrusion swelling in the exit of thread, the cross section of thread will change to circle like this, has reduced the degree of profile of as-spun fibre.The spinnerets that the utility model adopted, the spinnerets that is different from conventional polymorphic structure, fully taken into account the extrusion swelling of solution in the exit, adopt cross section to have symmetrical centre, pore that degree of profile is bigger, even make the solution thread after extruding, have extrusion swelling also can keep bigger degree of profile, thereby make the polyimide fiber of making have bigger specific area, improved its efficient of holding back flue dust in the industrial waste gas.
Description of drawings
Fig. 1 is a structure diagram of the present utility model.
Fig. 2 is the profile of spinneret orifice.
The specific embodiment
A kind of spinnerets that is used for dry method spinning polyimides profiled filament comprises spinnerets main body 1, is provided with some spinneret orifices 2 on spinnerets main body 1, and described spinneret orifice 2 is made up of the pod apertures 4 of taper and the pore 3 of abnormity.The pod apertures of described taper be characterized as tapering between 0.1 to 0.5, the thickness of described pore is between 5 microns to 50 microns, pore 3 is a centrosymmetric structure, its cross sectional shape is one or more in trilobal, quatrefoil, five leaf, sexfoil, seven leaf, the octofoil, described spinneret orifice is evenly distributed on spinnerets, and hole count is between 4 to 500.
Claims (5)
1. a spinnerets that is used for dry method spinning polyimides profiled filament comprises the spinnerets main body, is provided with some spinneret orifices on the spinnerets main body, it is characterized in that: described spinneret orifice is made up of the pod apertures of taper and the pore of abnormity.
2. the spinnerets that is used for dry method spinning polyimides profiled filament according to claim 1, it is characterized in that: the tapering of pod apertures is 0.1 ~ 0.5.
3. the spinnerets that is used for dry method spinning polyimides profiled filament according to claim 1, it is characterized in that: the thickness of pore is 5 ~ 50 microns.
4. the spinnerets that is used for dry method spinning polyimides profiled filament according to claim 1, it is characterized in that: spinneret orifice is evenly distributed on the spinnerets main body, and hole count is 4 ~ 500.
5. the spinnerets that is used for dry method spinning polyimides profiled filament according to claim 1, it is characterized in that: pore is a centrosymmetric structure, and its cross sectional shape is one or more in trilobal, quatrefoil, five leaf, sexfoil, seven leaf, the octofoil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200721596U CN201962439U (en) | 2011-03-18 | 2011-03-18 | Spinneret plate for dry spinning of profiled polyimide fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200721596U CN201962439U (en) | 2011-03-18 | 2011-03-18 | Spinneret plate for dry spinning of profiled polyimide fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201962439U true CN201962439U (en) | 2011-09-07 |
Family
ID=44524976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200721596U Expired - Lifetime CN201962439U (en) | 2011-03-18 | 2011-03-18 | Spinneret plate for dry spinning of profiled polyimide fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201962439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904735A (en) * | 2017-12-14 | 2018-04-13 | 芜湖市皖南造船有限公司 | It is a kind of to wash bright and beautiful cotton fiber for dredger operative employee's work clothes |
-
2011
- 2011-03-18 CN CN2011200721596U patent/CN201962439U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904735A (en) * | 2017-12-14 | 2018-04-13 | 芜湖市皖南造船有限公司 | It is a kind of to wash bright and beautiful cotton fiber for dredger operative employee's work clothes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU AOSHEN NEW MATERIAL CO., LTD. Free format text: FORMER NAME: JIANGSU AOSHEN NEW MATERIAL LLC |
|
| CP03 | Change of name, title or address |
Address after: 222000 Jiangsu province Lianyungang Dapu Dapu industrial zone of Lianyungang economic and Technical Development Zone Road No. 20 Patentee after: JIANGSU AOSHEN HI-TECH MATERIALS CO., LTD. Address before: 222000 No. 2, market road, Sinpo District, Jiangsu, Lianyungang Patentee before: Jiangsu Aoshen New Material Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |