CN106544741A - A kind of method for improving superhigh molecular weight polyethylene fibers performance - Google Patents
A kind of method for improving superhigh molecular weight polyethylene fibers performance Download PDFInfo
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- CN106544741A CN106544741A CN201510596944.4A CN201510596944A CN106544741A CN 106544741 A CN106544741 A CN 106544741A CN 201510596944 A CN201510596944 A CN 201510596944A CN 106544741 A CN106544741 A CN 106544741A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The present invention provides a kind of method for improving fibre quality index, the situation that fiber number is uneven, product performance index is relatively low produced in solving superhigh molecular weight polyethylene fibers production process, so as to realize the industrialization steady production and the market competitiveness of fiber product of high-performance polyethylene fibres, the domestic blank in the production of high-performance polyethylene fibres high-end product is filled up.Side-blown wind box in existing high-performance polyethylene fibres dry spinning device and path are transformed, increases a transversely movable hot five roller/seven roller drafting machine in cross air blasting box house, drawing-off, the winding of precursor are realized in cross air blasting box house.Heat tape is wound outside path, an easy drafting heat box is transformed into, is realized the controllable of path internal temperature, so as to realize hot gas spring of the precursor inside path.
Description
Technical field
The invention provides a kind of method for improving superhigh molecular weight polyethylene fibers performance indications and homogeneity, belongs to high score subclass.More particularly to a kind of method of the intensity and homogeneity for improving high-performance polyethylene dry spinning fiber product.
Background technology
The Mitsui of superhigh molecular weight polyethylene fibers dry spinning technology only Dutch DSM company external at present and Japan possesses, use the polyethylene fibre production technology with decahydronaphthalene as dicyandiamide solution, high-strength, the high-modulus polyethylene fiber of its production accounts for the 40 ~ 50% of whole market, is mainly used in the aspects such as national defence, military project.China carries out dry spinning technical research from the eighties in 20th century, the dry spinning technology that the southization academy that only Yizheng Fiber Optical plant is adopted at present is developed with China Textile Academy, product with fine-denier, high-strength occupy rapidly domestic market, but its fibre quality index is only capable of reaching the low and middle-grade sub-levels of domestic like product, lacks the market competitiveness.Especially in terms of high-end fiber, due to external long-term blockade on new techniques, there is larger gap in its fibre quality index.
The present invention relies on the existing 30t/a high-performance polyethylene fibres dry spinning of Research Institute of Nanjing Chemical Industry Group to expand trial assembly and puts, undergo technological transformation, solve horizontal, Vertical Disturbing that wind field pair is produced with vertical spinning, increase one-level drafting system, change original vertical spinning form, so as to lift the homogeneity of the performance indications and fiber of fiber product.
The content of the invention
It is not high that the purpose of the present invention mainly solves state-owned high-performance polyethylene fibres dry spinning properties of product at present, the problem that product differs, a kind of method for improving fibre quality index is provided, the situation that fiber number is uneven, product performance index is relatively low produced in solving superhigh molecular weight polyethylene fibers production process, so as to realize the industrialization steady production and the market competitiveness of fiber product of high-performance polyethylene fibres, the domestic blank in the production of high-performance polyethylene fibres high-end product is filled up.
Technical scheme：The method for improving superhigh molecular weight polyethylene fibers performance, for in the production of high-performance polyethylene fibres dry spinning, it is characterized in that cross air blasting box house increase a transversely movable hot five roller/seven roller drafting machine, by track realize hot-rolling cross air blasting box house freely arrange and fiber precursor drawing-off wind；Path is designed as into a drafting heat box, by winding controllable heat tape in path outer surface, realize pathogenic wind-warm inside path, air quantity circulation it is controllable, lasting drawing-off of the precursor in path.
Usually, the inventive method is：Raw material is after the dissolving shearing of swelling and double screw extruder, spinneret extrusion molding is delivered to through dosing pump extrusion, solvent flash distillation is carried out in the cold set of ring, realize the abundant volatilization of solvent decahydronaphthalene, the decahydronaphthalene steam of flash distillation is taken solvent recovery unit by side-blown circulated air in side-blown wind box, molding strand enters path by action of gravity, and through the further heating, drying of path wind, the fiber precursor after drying is entering follow-up drafting process through godet；After device is stable, five roller/seven roller drafting machines in side-blown wind box are adjusted so as to carry out transverse shifting, realize that fiber precursor is wound in the boundling of cross air blasting box house, by the heat effect of five roller/seven rollers, reduce the precursor solvent brought due to boundling；The speed of the rotating speed and follow-up drafting machine of five roller/seven roller drafting machines in side-blown wind box is adjusted, the overall draft ratio of fiber is improved；By the path of drafting heat box, fiber precursor drawing-off inside the path makes the solvent in precursor further volatilize, improves the response rate of solvent.
A kind of method of described raising superhigh molecular weight polyethylene fibers performance is used increases a transversely movable hot five roller/seven roller drafting machine in cross air blasting box house, and original path is transformed into an easy drafting heat box.
Described moveable hot five roller/seven roller drafting machine, by track realize hot-rolling cross air blasting box house freely arrange and fiber precursor drawing-off winding, the continual and steady heating of roller, preferably seven roller drafting machines can be realized inside five roller/seven roller drafting machines by way of electrical heating or heating agent.
Described path is transformed into an easy drafting heat box, mainly by existing path outer surface is wound controllable heat tape, so as to realize pathogenic wind-warm inside path, air quantity circulation it is controllable.
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, upper roller drawing-off is realized using hot five roller/seven roller in side-blown wind box, the horizontal and longitudinal judder that fiber is brought by cross air blasting, path wind is farthest reduced, the degree of crystallinity of protofilament is improved；
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, using hot five roller/seven roller electric heating system, it is possible to achieve fiber precursor is heated on roller, reduces the content of solvent decahydronaphthalene in fiber precursor, improves the response rate of solvent；
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, can reduce cross air blasting to room temperature, realize the quenching rapid shaping of fiber precursor；
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, adjusts the drafting rate of five roller/seven roller drafting machines in side-blown wind box, sets up corresponding multiplying power relation with follow-up drafting machine, can further improve the overall draft ratio of fiber；
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, path becomes an easy drafting heat box by original auxiliary drying system, fiber precursor drawing-off inside the path, is conducive to the solvent in precursor further to volatilize, improves the response rate of solvent；
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, as the overall draft ratio of fiber is increased dramatically, fiber product is presented fine-denier, high-strength, high mould advantage.
A kind of method of described raising superhigh molecular weight polyethylene fibers performance, is primarily directed to high-performance polyethylene fibres dry spinning production line, and solvent is decahydronaphthalene solvent.
The technology of the present invention, improves the overall draft ratio of fiber, eliminates the fiber differences that air quantity shake brings, and the fibre number of production is homogeneous, and excellent performance is particularly adapted to high-performance polyethylene fibres dry spinning field.
Description of the drawings
Fig. 1 is existing apparatus partial schematic diagram.
Fig. 2 is embodiment device partial schematic diagram.
Fig. 3 is embodiment operation schematic diagram.
In figure, the side-blown wind box of 1-；2- spinnerets；The cold set of 3- rings；4- paths.
Specific embodiment
The present invention is described in detail in reference to embodiment and accompanying drawing.
Following examples use polyethylene/decahydronaphthalene system, material concentration 6.5%（Mass volume ratio）Solution temperature 148-155 DEG C, 200 DEG C of spinning temperature
Expand trial assembly to put（See accompanying drawing 1）The fibre quality index not having before transforming, solvent recovering rate 97.5%
Improved specific embodiment
As shown in Figures 2 and 3, the side-blown wind box and path expanded during trial assembly is put to existing 30t/a high-performance polyethylene fibres dry spinning is transformed, increase a transversely movable hot five roller/seven roller drafting machine in cross air blasting box house, drawing-off, the winding of precursor are realized in cross air blasting box house.Heat tape is wound outside path, an easy drafting heat box is transformed into, is realized the controllable of path internal temperature, so as to realize hot gas spring of the precursor inside path.
Idiographic flow is as follows：Raw material delivers to spinneret through dosing pump extrusion after the dissolving shearing of swelling and double screw extruder（2）Extrusion molding, in the cold set of ring（3）In carry out solvent flash distillation, realize the abundant volatilization of solvent decahydronaphthalene, the decahydronaphthalene steam of flash distillation is in side-blown wind box（1）Solvent recovery unit is taken to by side-blown circulated air, molding strand enters path by action of gravity（4）, through the further heating, drying of path wind, the fiber precursor after drying is entering follow-up drafting process through godet.After device is stable, reconcile five roller/seven roller drafting machines in side-blown wind box, which is made to carry out transverse shifting, realize that fiber precursor is wound in the boundling of cross air blasting box house, acted on by the electrical heating of five roller/seven rollers, solve the problems, such as that the precursor solvent brought due to boundling is too high, reconcile the rotating speed and the speed of follow-up drafting machine of five roller/seven roller drafting machines in side-blown wind box, original path is changed to into a vertical drafting heat box by heat tape and is used.
Embodiment 1
120 DEG C of side-blown air temperature, 120 DEG C of heat roller temperature, 8 times of jet stretch multiplying power, 2 times of the five roller/seven roller drafting machine draft ratio of cross air blasting box house, 224 times of overall draft ratio, solvent recovering rate 99.17%, fibre property Testing index see the table below
Embodiment 2
Cross air blasting temperature 60 C, 120 DEG C of heat roller temperature, 8 times of jet stretch multiplying power, 3 times of the five roller/seven roller drafting machine draft ratio of cross air blasting box house, 240 times of overall draft ratio, solvent recovering rate 99.09%, fibre property Testing index see the table below
Embodiment 3
Side-blown air temperature room temperature, 125 DEG C of heat roller temperature, 8 times of jet stretch multiplying power, 4 times of the five roller/seven roller drafting machine draft ratio of cross air blasting box house, 280 times of overall draft ratio, solvent recovering rate 99.01%, fibre property Testing index see the table below
From examples detailed above, it can be clearly seen that, the fiber produced using this method, its performance indications are reached the advanced level of same kind of products at abroad, and the homogeneity of fiber are increased dramatically far above the fiber level before transformation, and solvent recovering rate also effectively improves.
Claims (10)
1. it is a kind of improve superhigh molecular weight polyethylene fibers performance method, for in the production of high-performance polyethylene fibres dry spinning, it is characterized in that cross air blasting box house increase a transversely movable hot five roller/seven roller drafting machine, by track realize hot-rolling cross air blasting box house freely arrange and fiber precursor drawing-off wind；Path is designed as into a drafting heat box, by winding controllable heat tape in path outer surface, realize pathogenic wind-warm inside path, air quantity circulation it is controllable, lasting drawing-off of the precursor in path.
2. the method for claim 1, it is characterized in that raw material is after the dissolving shearing of swelling and double screw extruder, spinneret extrusion molding is delivered to through dosing pump extrusion, solvent flash distillation is carried out in the cold set of ring, realize the abundant volatilization of solvent decahydronaphthalene, the decahydronaphthalene steam of flash distillation is taken solvent recovery unit by side-blown circulated air in side-blown wind box, molding strand enters path by action of gravity, through the further heating, drying of path wind, the fiber precursor after drying is entering follow-up drafting process through godet；After device is stable, five roller/seven roller drafting machines in side-blown wind box are adjusted so as to carry out transverse shifting, realize that fiber precursor is wound in the boundling of cross air blasting box house, by the heat effect of five roller/seven rollers, reduce the precursor solvent brought due to boundling；The speed of the rotating speed and follow-up drafting machine of five roller/seven roller drafting machines in side-blown wind box is adjusted, the overall draft ratio of fiber is improved；By the path of drafting heat box, fiber precursor drawing-off inside the path makes the solvent in precursor further volatilize, improves the response rate of solvent.
3. the method for claim 1, it is characterised in that realize the continual and steady heating of roller inside hot five roller/seven roller drafting machine by way of electrical heating or heating agent, make the quick volatilization of solvent in precursor.
4. method as claimed in claim 1 or 2, it is characterised in that drafting machine is seven roller drafting machines.
5. method as claimed in claim 1 or 2, it is characterised in that upper roller drawing-off is realized in side-blown wind box using hot five roller/seven roller, reduces the horizontal and longitudinal judder that fiber is brought by cross air blasting, path wind, the degree of crystallinity of raising protofilament.
6. method as claimed in claim 1 or 2, it is characterised in that side-blown air temperature is reduced using drafting heat box, the quenching rapid shaping of fiber precursor is realized, cross air blasting pathogenic wind-warm scope is at 0-140 DEG C.
7. method as claimed in claim 1 or 2, it is characterised in that cross air blasting pathogenic wind-warm is at 20-35 DEG C.
8. method as claimed in claim 1 or 2, it is characterized in that the drafting rate by adjusting five roller/seven roller drafting machines in side-blown wind box, corresponding multiplying power relation is set up with follow-up drafting machine, the overall draft ratio of fiber is improved, draft ratio scope is at 1-5 times.
9. method as claimed in claim 1 or 2, it is characterised in that draft ratio scope is at 2.5-3 times.
10. method as claimed in claim 2, it is characterised in that the solvent is decahydronaphthalene solvent.
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| CN201510596944.4A CN106544741B (en) | 2015-09-18 | 2015-09-18 | A method of improving ultra high molecular weight polyethylene fiber performance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109666976A (en) * | 2017-10-16 | 2019-04-23 | 中国石油化工股份有限公司 | The method for improving ultra high molecular weight polyethylene fiber properties of product |
| CN110093678A (en) * | 2019-04-30 | 2019-08-06 | 上海化工研究院有限公司 | The method of melt frozen glue and separation of solid and liquid in ultra-high molecular weight polyethylene dry spinning |
| WO2022083740A1 (en) | 2020-10-23 | 2022-04-28 | 中国石油化工股份有限公司 | Fiber spinning method, and spun fibers and use thereof |
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| JP2000064115A (en) * | 1998-08-19 | 2000-02-29 | Teijin Seiki Co Ltd | Melt-spinning and side blowing spinning cylinder for melt-spinning |
| CN104213218A (en) * | 2013-05-31 | 2014-12-17 | 青岛华世洁环保科技有限公司 | High-strength and high-modulus polyethylene fiber drafting hot box |
| CN104213219A (en) * | 2013-05-31 | 2014-12-17 | 青岛华世洁环保科技有限公司 | Channel structure for high-strength high-modulus polyethylene fiber drafting hot box |
| CN104419996A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Production method of ultrahigh molecular weight polyethylene fiber |
| CN104911722A (en) * | 2015-05-15 | 2015-09-16 | 上海化工研究院 | Method for precursor fiber curing molding during ultrahigh-molecular-weight polyethylene dry spinning |
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2015
- 2015-09-18 CN CN201510596944.4A patent/CN106544741B/en active Active
Patent Citations (5)
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| JP2000064115A (en) * | 1998-08-19 | 2000-02-29 | Teijin Seiki Co Ltd | Melt-spinning and side blowing spinning cylinder for melt-spinning |
| CN104213218A (en) * | 2013-05-31 | 2014-12-17 | 青岛华世洁环保科技有限公司 | High-strength and high-modulus polyethylene fiber drafting hot box |
| CN104213219A (en) * | 2013-05-31 | 2014-12-17 | 青岛华世洁环保科技有限公司 | Channel structure for high-strength high-modulus polyethylene fiber drafting hot box |
| CN104419996A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Production method of ultrahigh molecular weight polyethylene fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109666976A (en) * | 2017-10-16 | 2019-04-23 | 中国石油化工股份有限公司 | The method for improving ultra high molecular weight polyethylene fiber properties of product |
| CN109666976B (en) * | 2017-10-16 | 2021-04-06 | 中国石油化工股份有限公司 | Method for improving performance of ultra-high molecular weight polyethylene fiber product |
| CN110093678A (en) * | 2019-04-30 | 2019-08-06 | 上海化工研究院有限公司 | The method of melt frozen glue and separation of solid and liquid in ultra-high molecular weight polyethylene dry spinning |
| WO2022083740A1 (en) | 2020-10-23 | 2022-04-28 | 中国石油化工股份有限公司 | Fiber spinning method, and spun fibers and use thereof |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |