CN102828316B - Device for improving strength utilization rate of para-position aramid fiber in optical cable enhancement - Google Patents
Device for improving strength utilization rate of para-position aramid fiber in optical cable enhancement Download PDFInfo
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- CN102828316B CN102828316B CN201210373806.6A CN201210373806A CN102828316B CN 102828316 B CN102828316 B CN 102828316B CN 201210373806 A CN201210373806 A CN 201210373806A CN 102828316 B CN102828316 B CN 102828316B
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Abstract
The invention relates to a device for improving the strength utilization rate of para-position aramid fiber in optical cable enhancement and belongs to the field of polymer materials. The device is characterized by comprising a preheating dry device, a high-temperature tension thermal treatment device and a fused salt heating and conveying device. By utilizing the device, the strength utilization rate of the para-position aramid fiber in optical cable enhancement can be obviously improved by at least 5%, and the device disclosed by the invention is suitable for industrial production so as to improve the strength utilization rate of the para-position aramid fiber in optical cable enhancement.
Description
Technical field
Belong to polymeric material field, relate to processing of high molecular material technology.Exactly relate to a kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens.
Background technology
Para-aramid fiber also claims Fanglun 1414, p-aramid fiber is the widest, the organic fiber that has the call of purposes in the large high-performance fiber in the world today three, p-aramid fiber is called " changeable Buddha's warrior attendant " by material circle, its purposes widely, especially strengthen field at optical cable, use very general.
The fortifying fibre that can use at ADSS optical cable and special field optical cable enhancing field at present has: 1. polyparaphenylene's benzo-dioxazole fiber (pbo fiber), its physical and mechanical properties is the twice of p-aramid fiber, but because current production rate is few, price is high, is seldom applied in optical cable and strengthens field, 2. para-aramid fiber (PPTA fiber), cost ratio pbo fiber is much lower, become ADSS optical cable, special field optical cable and part FTTH optical cable fortifying fibre are first, but due to optical fiber, in use percentage elongation generally can not more than 1%, rate of utilization of strength when current para-aramid fiber is strengthened is not high, for Kevlar, Kevlar29 is when being used as optical cable and strengthening, rate of utilization of strength only has 27.7%, kevlar49 is when being used as optical cable and strengthening, rate of utilization of strength 41.7%, if improve the intensity interest rate of para-aramid fiber when optical cable strengthens, just mean the use amount can saving para-aramid fiber, thus the production cost of optical cable can be reduced.
The rate of utilization of strength computational methods of fortifying fibre are as follows:
Adopt the mechanical performance of ASTM D885-2004 standard test fiber, obtain stress when fiber generation 1% strains and tensile fiber fracture strength, then according to following formulae discovery, rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100%.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens is provided.
The technical scheme that the present invention takes is as follows:
A kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens, the annexation of its device is: low modulus para-aramid fiber passes through thread supplying machine, enter continuously in pre-heating dryer with certain speed and carry out preheating and drying, then para-aramid fiber after preheating and drying enters in high temperature heat treatment furnace, carry out high-temperature tension heat treatment, para-aramid fiber after process is cooled to room temperature after drawing machine, cooled para-aramid fiber is oiled by oiling machine, is coiled into silk cylinder through winder winding; Solid fused salt in fused salt groove, after heater via is heated into liquid salt, be delivered in heat exchanger through fused salt delivery pump, and then enter the chuck layer arrival end of high temperature heat treatment furnace, after the chuck layer of high temperature heat treatment furnace, flow back in fused salt groove by the chuck layer port of export of high temperature heat treatment furnace; High pure nitrogen enters in heat exchanger and heats under the effect of conveying fan, high pure nitrogen after heating enters the arrival end of high temperature heat treatment furnace sandwich layer, by after high temperature heat treatment furnace sandwich layer under the suction of conveying fan, be back to Reusability in conveying fan through the port of export.
Good effect of the present invention is:
(1) device of the rate of utilization of strength that is a kind of raising para-aramid fiber that can adopt on a large scale in optical cable strengthens;
(2) this device is all applicable to the para-aramid fiber of modulus≤750 cN/dtex, and the lower effect of modulus is more remarkable;
(3) adopt the para-aramid fiber of this device process, when being used as optical cable and strengthening, rate of utilization of strength is minimum improves 5%, the highlyest improves 30%.
Accompanying drawing explanation
Fig. 1 is structure drawing of device of the present invention
Detailed description of the invention
Now by reference to the accompanying drawings apparatus structure of the present invention is described further.
A kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens, the annexation of its device is: low modulus para-aramid fiber is entered continuously in pre-heating dryer (2) with certain speed by thread supplying machine (1) and carries out preheating and drying, then para-aramid fiber after preheating and drying enters in high temperature heat treatment furnace (3) and carries out high-temperature tension heat treatment, para-aramid fiber after process is cooled to room temperature after drawing machine (4), and cooled para-aramid fiber is wound into silk cylinder through up-coiler (6) after being oiled by oiling machine (5); After solid fused salt heater via (10) in fused salt groove (11) is heated into liquid salt, be delivered in heat exchanger (8) through fused salt delivery pump (9), and then enter the chuck layer arrival end of high temperature heat treatment furnace (3), after chuck layer by high temperature heat treatment furnace (3), flow back in fused salt groove (11) by the chuck layer port of export of high temperature heat treatment furnace (3); High pure nitrogen enters in heat exchanger (8) and heats under the effect of conveying fan (7), high pure nitrogen after heating enters the arrival end of high temperature heat treatment furnace (3) sandwich layer, by after high temperature heat treatment furnace (3) sandwich layer under the suction of conveying fan (7), Reusability in the port of export is back to conveying fan (7).
Described pre-heating dryer (2) roller number adopts 5 rollers or 7 rollers, is preferably 7 rollers.
Described pre-heating dryer (2) mode of heating adopts heating or electrical heating in water vapour roller, is preferably heating in water vapour roller.
Described high temperature heat treatment furnace (3) mode of heating adopts liquid salt chuck to heat.
Described high temperature heat treatment furnace (3) mounting means is at right angle setting.
Described drawing machine (4) is with roller Inner eycle water-cooling system, and the control temperature of recirculated water is 20 DEG C ~ 25 DEG C.
Described oiling machine (5) adopts oiling roller to oil or spray and oils, and is preferably oiling roller and oils.
Described heat exchanger (8) is shell-and-tube heat exchanger.
Case study on implementation.
Embodiment 1:
Take a morsel and do not adopt the low modulus para-aramid fiber of the inventive method process, For Measuring Mechanical Properties is carried out according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 350 cN/dtex, 1% strain time stress be 8.01cN and fibrous fracture time stress be 35.34cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=22.6% when being used as optical cable and strengthening
Above-mentioned para-aramid fiber is by thread supplying machine (1), enter in pre-heating dryer (2) with the speed of 200m/min and carry out 160 DEG C of preheating and dryings, pre-heating dryer (2) adopts steam heating in 7 roll-type rollers, fiber after preheating and drying enters in vertically arranged high temperature heat treatment furnace (3) and carries out high-temperature tension heat treatment under the high pure nitrogen that purity is 99.99% is protected, heat treatment temperature is 525 DEG C, the nervous tension force of fiber is 8% of tension failure brute force, high-temperature tension heat treatment time was 2.5 seconds, then room temperature is cooled to through drawing machine (4), oiled by oiling machine (5), oiling machine adopts oiling roller to oil, oil applying rate of fiber is 1%, fiber after finally oiling is wound into cylinder through up-coiler (6).Gained fiber carries out For Measuring Mechanical Properties according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 850 cN/dtex, 1% strain time stress be 16.25cN and fibrous fracture time stress be 31.52cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=51.6% when being used as optical cable and strengthening, when comparing without this inventive method process, rate of utilization of strength improves 29%.
Embodiment 2:
Take a morsel and do not adopt the low modulus para-aramid fiber of the inventive method process, For Measuring Mechanical Properties is carried out according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 490 cN/dtex, 1% strain time stress be 9.87cN and fibrous fracture time stress be 35.57cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=27.7% when being used as optical cable and strengthening
Above-mentioned para-aramid fiber is by thread supplying machine (1), enter in pre-heating dryer (2) with the speed of 250m/min and carry out 150 DEG C of preheating and dryings, pre-heating dryer (2) adopts steam heating in 7 roll-type rollers, fiber after preheating and drying enters in vertically arranged high temperature heat treatment furnace (3) and carries out high-temperature tension heat treatment under the high pure nitrogen that purity is 99.99% is protected, heat treatment temperature is 525 DEG C, the nervous tension force of fiber is 8% of tension failure brute force, high-temperature tension heat treatment time was 2 seconds, then room temperature is cooled to through drawing machine (4), oiled by oiling machine (5), oiling machine adopts oiling roller to oil, oil applying rate of fiber is 1%, fiber after finally oiling is wound into cylinder through up-coiler (6).Gained fiber carries out For Measuring Mechanical Properties according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 820 cN/dtex, 1% strain time stress be 15.92cN and fibrous fracture time stress be 31.71cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=50.2% when being used as optical cable and strengthening, when comparing without this inventive method process, rate of utilization of strength improves 22.5%.
Embodiment 3:
Take a morsel and do not adopt the low modulus para-aramid fiber of the inventive method process, For Measuring Mechanical Properties is carried out according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 740 cN/dtex, 1% strain time stress be 14.83cN and fibrous fracture time stress be 36.07cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=41.1% when being used as optical cable and strengthening
Above-mentioned para-aramid fiber is by thread supplying machine (1), enter in pre-heating dryer (2) with the speed of 250m/min and carry out 170 DEG C of preheating and dryings, pre-heating dryer (2) adopts steam heating in 7 roll-type rollers, fiber after preheating and drying enters in vertically arranged high temperature heat treatment furnace (3) and carries out high-temperature tension heat treatment under the high pure nitrogen that purity is 99.99% is protected, heat treatment temperature is 525 DEG C, the nervous tension force of fiber is 5% of tension failure brute force, high-temperature tension heat treatment time was 2 seconds, then room temperature is cooled to through drawing machine (4), oiled by oiling machine (5), oiling machine adopts oiling roller to oil, oil applying rate of fiber is 1%, fiber after finally oiling is wound into cylinder through up-coiler (6).Gained fiber carries out For Measuring Mechanical Properties according to ASTM D885-2004 standard, recording tensile modulus of elasticity is 1050 cN/dtex, 1% strain time stress be 16.62cN and fibrous fracture time stress be 35.71cN, and press: rate of utilization of strength=(stress/tensile fiber fracture strength during 1% strain occurs fiber) × 100% calculates, obtain this fiber rate of utilization of strength=46.5% when being used as optical cable and strengthening, when comparing without this inventive method process, rate of utilization of strength improves 5.4%.
Claims (4)
1. one kind is improved the device of para-aramid fiber rate of utilization of strength in optical cable strengthens, the annexation of its device is: low modulus para-aramid fiber is entered continuously in pre-heating dryer (2) with certain speed by thread supplying machine (1) and carries out preheating and drying, then para-aramid fiber after preheating and drying enters in high temperature heat treatment furnace (3) and carries out high-temperature tension heat treatment, para-aramid fiber after process is cooled to room temperature after drawing machine (4), and cooled para-aramid fiber is wound into silk cylinder through up-coiler (6) after being oiled by oiling machine (5); After solid fused salt heater via (10) in fused salt groove (11) is heated into liquid salt, be delivered in heat exchanger (8) through fused salt delivery pump (9), and then enter the chuck layer arrival end of high temperature heat treatment furnace (3), after chuck layer by high temperature heat treatment furnace (3), flow back in fused salt groove (11) by the chuck layer port of export of high temperature heat treatment furnace (3); High pure nitrogen enters in heat exchanger (8) and heats under the effect of conveying fan (7), high pure nitrogen after heating enters the arrival end of high temperature heat treatment furnace (3) sandwich layer, by after high temperature heat treatment furnace (3) sandwich layer under the suction of conveying fan (7), Reusability in the port of export is back to conveying fan (7).
2. a kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens according to claim 1, is characterized in that: described high temperature heat treatment furnace (3) mode of heating adopts liquid salt chuck to heat.
3. a kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens according to claim 1, is characterized in that: described high temperature heat treatment furnace (3) mounting means is at right angle setting.
4. a kind of device improving para-aramid fiber rate of utilization of strength in optical cable strengthens according to claim 1, is characterized in that: described heat exchanger (8) is shell-and-tube heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210373806.6A CN102828316B (en) | 2012-10-02 | 2012-10-02 | Device for improving strength utilization rate of para-position aramid fiber in optical cable enhancement |
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| CN201210373806.6A CN102828316B (en) | 2012-10-02 | 2012-10-02 | Device for improving strength utilization rate of para-position aramid fiber in optical cable enhancement |
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| CN102828316B true CN102828316B (en) | 2015-04-22 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869430A (en) * | 1971-08-17 | 1975-03-04 | Du Pont | High modulus, high tenacity poly(p-phenylene terephthalamide) fiber |
| US4016236A (en) * | 1974-05-15 | 1977-04-05 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for manufacturing aromatic polymer fibers |
| NL172680C (en) * | 1979-06-08 | 1983-10-03 | Akzo Nv | PROCESS FOR MANUFACTURING FIBERS FROM POLY-P-PHENYLENE DEPTHALAMIDE AND THE PRODUCTS PRODUCED SO. |
| DE3841525A1 (en) * | 1988-12-09 | 1990-06-13 | Fleissner Maschf Ag | Heated roller for synthetic fibres |
| EP0579082B1 (en) * | 1992-07-10 | 1998-08-26 | Hoechst Aktiengesellschaft | Method for thermally processing moving yarns and apparatus for carrying out this process |
| CN102051697A (en) * | 2009-11-05 | 2011-05-11 | 陈如巧 | Aramid fiber high-temperature forming machine |
| CN101775680A (en) * | 2009-12-24 | 2010-07-14 | 烟台氨纶股份有限公司 | Method for improving strength of polyphenylene terephthalamide fibers through heat setting |
| CN101798720B (en) * | 2010-04-28 | 2011-07-27 | 四川辉腾科技有限公司 | Aramid fiber III on-line thermal treating process and device thereof |
| CN102286794B (en) * | 2011-08-09 | 2013-06-12 | 中国石油化工股份有限公司 | High-performance fibers and preparation method thereof |
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Granted publication date: 20150422 Termination date: 20211002 |