CN109440203A - The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method - Google Patents
The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method Download PDFInfo
- Publication number
- CN109440203A CN109440203A CN201811510602.6A CN201811510602A CN109440203A CN 109440203 A CN109440203 A CN 109440203A CN 201811510602 A CN201811510602 A CN 201811510602A CN 109440203 A CN109440203 A CN 109440203A
- Authority
- CN
- China
- Prior art keywords
- solidification
- pipe
- solidification pipe
- poly
- coagulating
- 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.)
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Links
- 150000004866 oxadiazoles Chemical class 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009987 spinning Methods 0.000 title claims abstract description 23
- 230000015271 coagulation Effects 0.000 title claims abstract description 22
- 238000005345 coagulation Methods 0.000 title claims abstract description 22
- 238000007711 solidification Methods 0.000 claims abstract description 113
- 230000008023 solidification Effects 0.000 claims abstract description 113
- 230000001112 coagulating effect Effects 0.000 claims abstract description 59
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 19
- 206010057071 Rectal tenesmus Diseases 0.000 abstract description 5
- 208000012271 tenesmus Diseases 0.000 abstract description 5
- 238000007380 fibre production Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000002166 wet spinning Methods 0.000 description 3
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
Abstract
The invention discloses the poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method, including spinneret assembly, coagulating tank, feature is that coagulating tank is in the shape of the letter V, including the first solidification is managed and the second solidification pipe；First solidification pipe is vertically arranged, and spinneret assembly is set to the first solidification pipe upper end, and coagulating bath entrance is set on the left of the first solidification pipe upper end, and the lower end of the first solidification pipe is connect with the lower end of the second solidification pipe；The junction of first solidification pipe and the second solidification pipe sets godet roller, and the upper end of the second solidification pipe sets bar guide.It is an advantage of the invention that fiber has sufficiently long setting time, it is suitable for poly- fragrant oxadiazoles fiber production；Coagulating bath flow direction and tow move towards almost the same, and coefficient of friction is small, and curing condition is mild, are conducive to improve fiber surface smoothness and uniformity, and fiber is not contacted with coagulating tank inner surface, avoids lousiness phenomenon；Fiber tenesmus process avoids the strand adhesion sprayed with adjacent spinneret orifice from doubling phenomena occur.
Description
Technical field
The invention belongs to field of textile equipment more particularly to a kind of coagulating tanks suitable for poly- fragrant oxadiazoles spinning production
And its application method.
Background technique
Fragrant oxadiazoles fiber (POD) poly- at present is produced using the method for wet spinning, and coagulating tank is in wet spinning
The key equipment that must be used, traditional coagulating tank make tow walk in horizontal direction substantially after spray head ejection, coagulate out
Gu leaving liquid level before bath after silk pressing stick, process of setting is completed.The shortcomings that this kind of coagulating tank: close due to POD spinning solution
Spend it is larger, higher than the density of coagulating bath, after being sprayed by spinning head due to gravity be greater than buoyancy can generate falling phenomenon, cause several
Problem: first is that fiber tenesmus is easy the strand adhesion sprayed with adjacent spinneret orifice in the process, simultaneously silk, especially drawing-off times are formed
It is more obvious to count falling phenomenon when being negative drawing-off, doubling phenomena aggravation；Second is that tow easily contacts coagulating tank during tenesmus
Lousiness phenomenon is caused in bottom roughness face；Third is that the solidification path that tow is walked is arc-shaped during tenesmus, flowed to coagulating bath
Deviation is generated, the turbulence phenomena of friction and coagulating bath between coagulating bath and tow can aggravate, and influence coagulation result.
Chinese patent application, application number CN201310494250.0, the applying date 20131021, Authorization Notice No.
CN103498207B, authorized announcement date 20160518 disclose " a kind of suitable for doing spray-wet spinning manufacture aramid IIII fiber
Solidification forming device ", including solidification disk and U-shaped solidify pipe two parts, solidify disk mainly by solidification disk seat, gasket, solidification liquid
Distribute net, solidification disk cover and overflow pipe composition, U-shaped solidification pipe mainly by U-tube, regulation pipe, go out fiber tube form, U-tube
One end is connect with solidification disk, and the other end is flexibly connected with regulation pipe.The difference in height of inlet and liquid outlet that U-shaped solidifies pipe can root
It is adjusted according to spinning speed needs.It can realize that the Quick uniform of aramid fiber III as-spun fibre is solidifying using solidification forming device of the present invention
Gu significantly improving the spinning speed of aramid IIII fiber, production efficiency is improved, and working together, the fiber quality produced is more preferable, and burr is few,
Appearance is more regular, and since device volume is small, compact-sized, thus can also be achieved modular manufacturing and replacement.The disadvantage is that:
1.U shape solidification Guan Yinsi is more difficult, and the friction of larger area can occur with tube wall in U-shaped solidification bottom of the tube, easily aggravates hair
Silk phenomenon；2. setting time is shorter, it is not suitable for poly- fragrant oxadiazoles fiber；3. the technical solution is suitable for production long filament, uncomfortable
Synthesis produces poly- fragrant oxadiazoles staple fiber.
Summary of the invention
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide the poly- fragrant oxadiazoles spinning coagulation bath slot of one kind, knots
Structure is simple, occupied area is small, puts more flexible, effectively avoids fiber and silk, and coagulating bath flow direction and tow move towards almost the same,
Coefficient of friction between the two is smaller, and curing condition coincide, and is conducive to improve stop surface smoothness and uniformity, reduces hair
Silk.
To achieve the above object, the present invention adopts the following technical scheme:
The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind, including spinneret assembly, coagulating tank, its main feature is that, the solidification
Bath includes the first solidification pipe and the second solidification pipe；The first solidification pipe is vertically arranged, and spinneret assembly is set to the first solidification
Pipe upper end, the left side of the first solidification pipe upper end are equipped with coagulating bath entrance, the lower end of the lower end of the first solidification pipe and the second solidification pipe
Connection, coagulating tank are in the shape of the letter V；The junction of the first solidification pipe and the second solidification pipe sets godet roller, the second solidification pipe
Upper end sets bar guide, and godet roller guides tow to turn in the junction of the first solidification pipe and the second solidification pipe, the tow after steering
Advance obliquely upward along the second solidification pipe, introduces back segment process by bar guide and continue to process.
Further, the angle of the first solidification pipe and the second solidification pipe is 25-80 °.
Further, the angle of the first solidification pipe and the second solidification pipe is 30-50 °.
Further, upper end of the upper end of the second solidification pipe lower than the first solidification pipe.
Further, upper end 0-100mm of the upper end of the second solidification pipe lower than the first solidification pipe.
Further, detachable splicing groove, the lowest order of detachable splicing groove are set on the right side of first solidification pipe upper end
It sets low and solidifies pipe upper end in second, through-hole is set on the right side wall surface of the first solidification pipe upper end, is used as solidification in removable blowpit
The caching container of bath；A detachable splicing groove of dismantling when drawing thread increases operating space, draws and loads onto after the completion of silk, is conveniently adjusted coagulating bath
Flow direction.
Further, the material of the godet roller and bar guide is glass or ceramics.
Further, the coagulating bath in the coagulating tank is dilute sulfuric acid, and sulfuric acid content is 10%- in the dilute sulfuric acid
60%.
Further, the junction of the first solidification pipe and the second solidification pipe is in smooth arc-shaped surface, coagulating tank inner surface
Roughness Ra≤0.1 μm.
A kind of application method of poly- fragrant oxadiazoles spinning coagulation bath slot, its main feature is that carrying out in accordance with the following steps:
Coagulating bath entrance of the step 1 coagulating bath on the left of the first solidification pipe upper end enters, the first vertical downflow bottom of to
Portion, then flowed obliquely upward along the second solidification pipe, it is flowed out from the second solidification pipe upper end；The coagulation bath temperature is 20 DEG C -70 DEG C；
The partially solidified bath of step 2 enters detachable splicing groove, adjustment coagulating bath flow direction；It dismantles when drawing thread detachable splicing
Slot increases operating space, and spinneret assembly sprays tow, and godet roller through junction turns to, and tow is along the second solidification pipe to oblique
Top is advanced, and is introduced back segment process by the bar guide of the second solidification pipe upper end and is continued to process；Tow always stops coagulating tank
Staying the time is 8s-50s, and the residence time in the first solidification pipe is 3s-20s；Draw ratio of the tow in coagulating bath is 60%-
100%, be negative drawing-off, is conducive to the drawing-off of back segment；
Step 4 loads onto detachable splicing groove, adjustment coagulating bath flow direction after the completion of drawing silk.
Compared with prior art, it is an advantage of the invention that fiber has sufficiently long setting time, it is suitable for poly- fragrant oxadiazoles
Fiber, especially poly- fragrant oxadiazoles staple fiber production；Coagulating bath flow direction and tow move towards almost the same, friction system between the two
Number is smaller, and curing condition is mild, is conducive to improve fiber surface smoothness and uniformity, and fiber not with coagulating tank inner surface
Contact, effectively avoids lousiness phenomenon；Fiber tenesmus process effectively avoids occurring simultaneously with the strand adhesion that adjacent spinneret orifice sprays
Silk phenomenon；Installation area is small, puts more flexible.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is schematic structural view of the invention.
In figure: 1- spinneret assembly 2- first solidifies pipe 3- second and solidifies pipe 4- godet roller 5- bar guide 6- solidification
Bathe the detachable splicing groove 8- tow of entrance 7-.
Specific embodiment
The invention will be further described With reference to embodiment.
As shown in Figure 1, a kind of poly- fragrant oxadiazoles spinning coagulation bath slot, including spinneret assembly 1, coagulating tank, feature
It is that coagulating tank includes the first solidification pipe 2 and the second solidification pipe 3；First solidification pipe 2 is vertically arranged, and spinneret assembly 1 is set to the
One solidifies 2 upper end of pipe, and the left side of the first solidification 2 upper end of pipe is equipped with coagulating bath entrance 6, and the lower end of the first solidification pipe 2 is coagulated with second
Gu the lower end of pipe 3 connects, coagulating tank is in the shape of the letter V；The junction of first solidification pipe 2 and the second solidification pipe 3 sets godet roller 4, the
The upper end of two solidification pipes 3 sets bar guide 5, and godet roller 4 guides tow 8 to turn in the junction of the first solidification pipe 2 and the second solidification pipe 3
To the tow after steering advances obliquely upward along the second solidification pipe 3, introduces back segment process by bar guide 5 and continues to process.
The angle of first solidification pipe 2 and the second solidification pipe 3 is 25-80 °.
The angle of first solidification pipe 2 and the second solidification pipe 3 is 30-50 °.
Upper end of the upper end of second solidification pipe 3 lower than the first solidification pipe 2.
Upper end 0-100mm of the upper end of second solidification pipe 3 lower than the first solidification pipe 2.
Detachable splicing groove 7 is set on the right side of first solidification 2 upper end of pipe, the extreme lower position of detachable splicing groove 7 is lower than second
3 upper end of pipe is solidified, through-hole, the interior caching as coagulating bath of removable blowpit 7 are set on the right side wall surface of first solidification 2 upper end of pipe
Container；A detachable splicing groove of dismantling when drawing thread increases operating space, draws and loads onto after the completion of silk, is conveniently adjusted coagulating bath flow direction.
The material of godet roller 4 and bar guide 5 is glass or ceramics.
Coagulating bath in coagulating tank is dilute sulfuric acid, and sulfuric acid content is 10%-60% in dilute sulfuric acid.
First solidification pipe 2 and second solidification pipe 3 junction be in smooth arc-shaped surface, coagulating tank inside surface roughness Ra≤
0.1μm。
A kind of application method of poly- fragrant oxadiazoles spinning coagulation bath slot, its main feature is that carrying out in accordance with the following steps:
Coagulating bath entrance 6 of the step 1 coagulating bath on the left of the first solidification 2 upper end of pipe enters, the first vertical downflow bottom of to
Portion, then flowed obliquely upward along the second solidification pipe 3, it is flowed out from the second solidification 3 upper end of pipe；The coagulation bath temperature is 20 DEG C -70
℃；
The partially solidified bath of step 2 enters detachable splicing groove 7, adjustment coagulating bath flow direction；It dismantles when drawing thread detachable splicing
Slot 7 increases operating space, and spinneret assembly 1 sprays tow 8, and the godet roller 4 through junction turns to, and tow 8 is along the second solidification pipe
3 advance obliquely upward, introduce back segment process by the bar guide 5 of the second solidification 3 upper end of pipe and continue to process；Tow 8 is in coagulating bath
The total residence time of slot is 8s-50s, and the residence time in the first solidification pipe 2 is 3s-20s；Drawing of the tow 8 in coagulating bath
It stretches than for 60%-100%, be negative drawing-off, is conducive to the drawing-off of back segment；
Step 4 loads onto detachable splicing groove 7, adjustment coagulating bath flow direction after the completion of drawing silk.
Claims (10)
1. the poly- fragrant oxadiazoles spinning coagulation bath slot of one kind, including spinneret assembly, coagulating tank, it is characterised in that: the solidification
Bath includes the first solidification pipe and the second solidification pipe；The first solidification pipe is vertically arranged, and spinneret assembly is set to the first solidification
Pipe upper end, the left side of the first solidification pipe upper end are equipped with coagulating bath entrance, the lower end of the lower end of the first solidification pipe and the second solidification pipe
Connection, coagulating tank are in the shape of the letter V；The junction of the first solidification pipe and the second solidification pipe sets godet roller, the second solidification pipe
Upper end sets bar guide.
2. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 1, it is characterised in that: the first solidification pipe and
The angle of second solidification pipe is 25-80 °.
3. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 1, it is characterised in that: the first solidification pipe and
The angle of second solidification pipe is 30-50 °.
4. the poly- fragrant oxadiazoles spinning coagulation bath slot of one kind according to Claims 2 or 3, it is characterised in that: second solidification
Upper end of the upper end of pipe lower than the first solidification pipe.
5. the poly- fragrant oxadiazoles spinning coagulation bath slot of one kind according to Claims 2 or 3, it is characterised in that: second solidification
Upper end 0-100mm of the upper end of pipe lower than the first solidification pipe.
6. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 5, it is characterised in that: on the first solidification pipe
Detachable splicing groove is set on the right side of end, lower than the second solidification pipe upper end, first solidifies on pipe the extreme lower position of detachable splicing groove
Through-hole, the removable blowpit interior caching container as coagulating bath are set on the right side wall surface at end；It dismantles when drawing thread detachable splicing
Slot increases operating space, draws silk and loads onto after the completion, is conveniently adjusted coagulating bath flow direction.
7. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 1, it is characterised in that: the godet roller and seal wire
The material of stick is glass or ceramics.
8. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 1, it is characterised in that: in the coagulating tank
Coagulating bath is dilute sulfuric acid, and sulfuric acid content is 10%-60% in the dilute sulfuric acid.
9. a kind of poly- fragrant oxadiazoles spinning coagulation bath slot according to claim 1, it is characterised in that: the first solidification pipe and
The junction of second solidification pipe is in smooth arc-shaped surface, coagulating tank inside surface roughness Ra≤0.1 μm.
10. a kind of application method of poly- fragrant oxadiazoles spinning coagulation bath slot, it is characterised in that: carry out in accordance with the following steps:
Coagulating bath entrance of the step 1 coagulating bath on the left of the first solidification pipe upper end enters, first vertical downflow to bottom, then
It flows along the second solidification pipe, is flowed out from the second solidification pipe upper end obliquely upward；The coagulation bath temperature is 20 DEG C -70 DEG C；
The partially solidified bath of step 2 enters detachable splicing groove, adjustment coagulating bath flow direction；It dismantles when drawing thread detachable splicing groove,
Increase operating space, spinneret assembly sprays tow, and the godet roller through junction turns to, and tow is managed obliquely upward along the second solidification
Advance, introduces back segment process by the bar guide of the second solidification pipe upper end and continue to process；Tow is in total stop of coagulating tank
Between be 8s-50s, first solidification pipe in residence time be 3s-20s；Draw ratio of the tow in coagulating bath is 60%-
100%, be negative drawing-off, is conducive to the drawing-off of back segment；
Step 4 loads onto detachable splicing groove, adjustment coagulating bath flow direction after the completion of drawing silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510602.6A CN109440203A (en) | 2018-12-11 | 2018-12-11 | The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510602.6A CN109440203A (en) | 2018-12-11 | 2018-12-11 | The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109440203A true CN109440203A (en) | 2019-03-08 |
Family
ID=65557272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811510602.6A Withdrawn CN109440203A (en) | 2018-12-11 | 2018-12-11 | The poly- fragrant oxadiazoles spinning coagulation bath slot of one kind and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109440203A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB695448A (en) * | 1947-09-04 | 1953-08-12 | American Cyanamid Co | Improvements in or relating to the production of synthetic fibres from polymers and copolymers of acrylonitrile |
| JPH11350245A (en) * | 1998-04-01 | 1999-12-21 | Toray Ind Inc | Production of acrylonitrile-based fiber |
| CN101983264A (en) * | 2008-03-31 | 2011-03-02 | 可隆工业株式会社 | Para-aramid fiber and method of preparing the same |
| JP2017160564A (en) * | 2016-03-10 | 2017-09-14 | 東レ株式会社 | Manufacturing method of acrylonitrile-based fiber bundle |
| JP2017172081A (en) * | 2016-03-25 | 2017-09-28 | 東レ株式会社 | Method for producing acrylonitrile-based fiber bundle and method for producing carbon fiber bundle |
| CN206799803U (en) * | 2017-06-08 | 2017-12-26 | 威海拓展纤维有限公司 | Wet-dry change coagulating tank |
| CN207793374U (en) * | 2018-01-31 | 2018-08-31 | 赣州齐畅新材料有限公司 | A kind of rare earth solution dilution device |
| CN209873192U (en) * | 2018-12-11 | 2019-12-31 | 江苏宝德新材料有限公司 | Aromatic polyoxadiazole spinning coagulating bath |
-
2018
- 2018-12-11 CN CN201811510602.6A patent/CN109440203A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB695448A (en) * | 1947-09-04 | 1953-08-12 | American Cyanamid Co | Improvements in or relating to the production of synthetic fibres from polymers and copolymers of acrylonitrile |
| JPH11350245A (en) * | 1998-04-01 | 1999-12-21 | Toray Ind Inc | Production of acrylonitrile-based fiber |
| CN101983264A (en) * | 2008-03-31 | 2011-03-02 | 可隆工业株式会社 | Para-aramid fiber and method of preparing the same |
| JP2017160564A (en) * | 2016-03-10 | 2017-09-14 | 東レ株式会社 | Manufacturing method of acrylonitrile-based fiber bundle |
| JP2017172081A (en) * | 2016-03-25 | 2017-09-28 | 東レ株式会社 | Method for producing acrylonitrile-based fiber bundle and method for producing carbon fiber bundle |
| CN206799803U (en) * | 2017-06-08 | 2017-12-26 | 威海拓展纤维有限公司 | Wet-dry change coagulating tank |
| CN207793374U (en) * | 2018-01-31 | 2018-08-31 | 赣州齐畅新材料有限公司 | A kind of rare earth solution dilution device |
| CN209873192U (en) * | 2018-12-11 | 2019-12-31 | 江苏宝德新材料有限公司 | Aromatic polyoxadiazole spinning coagulating bath |
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Application publication date: 20190308 |