CN1924123A - Method of fusion spinning fire resistant special type elastic spandex fiber and producing device thereof - Google Patents
Method of fusion spinning fire resistant special type elastic spandex fiber and producing device thereof Download PDFInfo
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- CN1924123A CN1924123A CN 200610086135 CN200610086135A CN1924123A CN 1924123 A CN1924123 A CN 1924123A CN 200610086135 CN200610086135 CN 200610086135 CN 200610086135 A CN200610086135 A CN 200610086135A CN 1924123 A CN1924123 A CN 1924123A
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- 229920002334 Spandex Polymers 0.000 title claims abstract description 45
- 239000004759 spandex Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009987 spinning Methods 0.000 title claims description 77
- 239000000835 fiber Substances 0.000 title claims description 24
- 230000004927 fusion Effects 0.000 title claims description 22
- 230000009970 fire resistant effect Effects 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims description 67
- 238000001816 cooling Methods 0.000 claims description 51
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000000654 additive Substances 0.000 claims description 23
- 230000000996 additive effect Effects 0.000 claims description 23
- 229920005906 polyester polyol Polymers 0.000 claims description 22
- 229920005862 polyol Polymers 0.000 claims description 22
- 150000003077 polyols Chemical class 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 19
- 239000012948 isocyanate Substances 0.000 claims description 19
- 150000002513 isocyanates Chemical class 0.000 claims description 19
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 16
- 229920001610 polycaprolactone Polymers 0.000 claims description 13
- 229920001228 polyisocyanate Polymers 0.000 claims description 12
- 239000005056 polyisocyanate Substances 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000004632 polycaprolactone Substances 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
This invention relates to one method and device for melt straight pin against high temperature of special spandex, which comprises the following steps: original materials weight laying; loading voltage with materials; heating oil; metering, mixing, reacting and extruding; mixing by melting. This invention has advantages of low production cost with about half of current one and two thirds energy consumption than current one while it improves pad by 15 percentage and anti-heat water by 24 percentage and spring reset by 8 percentage.
Description
Technical field
What the present invention relates to is the method and the production equipment thereof of fusion spinning fire resistant special type elastic spandex fiber, belongs to melt spun spandex spining technology field.
Background technology
Spandex formal name used at school＜POLYUTETHANE〉fiber, be a kind of spandex of development in recent years, be also referred to as: Si Pandesi＜SPANDEX fiber, PTMG accounts for 80% (quality molecules) of final polymer, is described as people's " second skin ".Generally adopt both at home and abroad at present: chemical method spins, wet method is spun, dry method is spun, more than these three kinds of spinning process all can produce environmental pollution aborning, complex process, energy consumption is big, floor space is many, investment is big, cost is high, and the elasticity spandex fibre silk of producing contains harmful material. known manufacturing thermoplasticity elastic spandex fiber, fusion slice spinning etc., because its producing cost height of elastomer that the fusion slice spinning obtains, energy resource consumption is big, and heat resistance, hot water resistance, elastic recovery etc. are all unsatisfactory.
Summary of the invention
The objective of the invention is to defective at above-mentioned existence, propose a kind ofly can effectively overcome the existing in prior technology contaminated environment, the method and the production equipment thereof of the fusion spinning fire resistant special type elastic spandex fiber of defectives such as complex process, energy consumption is big, floor space is many, investment is big, cost height.Thoroughly solve the adverse consequences that is produced in the above-mentioned production spandex fibre silk process, produced the fibre-grade elasticity spandex silk of environmental type.
Technical solution of the present invention: the method for fusion spinning fire resistant special type elastic spandex fiber is characterized in that processing step is divided into one successively, the weight ratio of raw material components; Polyester polyol accounts for that 62-75%, isocyanates account for 20-30%, butanediol accounts for 5-8%;
Two, negative pressure feeding: be evacuated to negative 1 kilogram of pressure, the polyester polyols raw polyol is added in the first purification jar by the first reinforced valve, butanediol by the first reinforced valve add first purify jar in, isocyanates by the 4th charging valve add the 3rd purify jar in;
Three,, make first a purification jar interior raw material be heated to 90-110 ℃, vacuum purification 0.5-1 hour to heat-conducting oil heating; The 3rd a purification jar interior raw material is heated to 70-80 ℃; Vacuum purification 0.5-1 hour adds 1 kilogram of nitrogen pressure after the end of purifying;
Four, metering, mix, reaction: first the raw material in purifying jar is incubated at 80 ℃ through heating, pressurization back direct sending first retort; The 3rd purification jar interior raw material send second retort after heating, pressurization, be incubated at 50-55 ℃; The raw material of first retort and second retort is delivered to second super mixer through the 3rd metering conveying pump, the 4th metering conveying pump delicate metering respectively to carry out secondary and mixes fully;
Five, extrude: send into after fully mixing by second super mixer and carry out the continuous bulk melt polymerization in the double screw extruder, the pressure 25-75 kilogram in the double screw extruder, temperature is controlled at 180-220 ℃, rotating speed 60-100 rev/min; The material that double screw extruder is extruded in delivery pump is sent into fondant filter, in the fondant filter temperature 180-220 ℃;
Six, melt mixed, spinning: in additive tank, add additive polyisocyanates 9-11Kg earlier; The interior material of fondant filter is incorporated dynamic mixer by the polyisocyanates of delivery pump positive battery metering conveying in additive tank into by the conveying of the 5th metering conveying pump positive battery metering and is carried out the melt high-speed mixing, mix after the metering of spinning delivery pump, and after being delivered to each spinning manifold master cylinder, pipeline enters in the manifold through the spinning wheel cylinder again, 180-220 ℃ of spinning the temperature inside the box, every cover manifold correspondence is provided with two cover air channel casees, spandex silk correspondence in the case of every cover air channel is connected to the following godet roller of the godet roller in the lead group of motors, on the last godet roller, spandex silk on the last godet roller is reeled by winding head, a slaking that falls, vanning again after sampling Detection is qualified.
Advantage of the present invention: producing cost is low, it is 1/2 of section molten spinning method of the prior art, energy consumption is 2/3 of a section molten spinning method, heat resistance improves more than 15% than section molten spinning method, hot water resistance has improved 24% than section molten spinning method, and elastic recovery has improved 8% than section molten spinning method, and percentage elongation has improved 12% than section molten spinning method, the uniformity of fiber is improved, and the time spent can keep above-mentioned premium properties.Stability, heat resistance, hot water resistance, elastic recovery, percentage elongation and the uniformity of thermoplastic fusion directly being spun the spinning of elasticity spandex fibre all improve a lot, because their good characteristic is widely used in various fields.
Description of drawings
Accompanying drawing 1 is the technological process of production figure of fusion spinning fire resistant special type elastic spandex fiber method.
Accompanying drawing 2 is structural representations of fusion spinning fire resistant special type elastic spandex fiber production equipment.
Among the figure 1 is that conduction oil goes out, the 2nd, conduction oil advances, 3 is first purification jars, 4 is second purification jars, 5 is the 3rd purification jars, 6 is first cooling tanks, 7 is second cooling tanks, 8 is the 3rd cooling tanks, 9 is first reaction storage tanks, 10 is second reaction storage tanks, 11 is first retort, 12 is second reinforced valves, 13 is first reinforced valves, 14 is the 3rd reinforced valves, the 15th, liquid-level switch, 16 is first to vacuumize, 17 is second to vacuumize, 18 is the 3rd to vacuumize, the 19th, pneumatics gas, the 20th, the carrene cleaning of evaporator, 21 is first super mixers, 22 is second super mixers, the 23rd, dynamic mixer, the 24th, measuring pump, the 25th, nitrogen valve, 26 is first pressure sensors, the 27th, delivery pump, the 28th, fondant filter, 29 is second pressure sensors, 30 is the 3rd pressure sensors, the 31st, additive tank, the 32nd, manifold, the 33rd, pipeline, the 34th, the spinning delivery pump, the 35th, the air channel, the 36th, the spandex silk, the 37th, wind direction, the 38th, godet roller, the 39th, winding head, the 40th, cooling water goes out, the 41st, nitrogen, 42 is second retort, the 43rd, temperature measuring equipment, the 44th, double screw extruder, the 45th, lubricating system, the 46th, cooling system, the 47th, vacuum system, 48 is first metering conveying pumps, 49 is second metering conveying pumps, 50 is the 3rd metering conveying pumps, 51 is the 4th metering conveying pumps, 52 is the 5th metering conveying pumps, 53 is the 4th charging valves, 54 is the 6th metering conveying pumps, the 55th, the spinning master cylinder, the 56th, the spinning wheel cylinder.
The specific embodiment
Contrast accompanying drawing 1, the method for fusion spinning fire resistant special type elastic spandex fiber is characterized in that processing step is divided into one successively, the weight ratio of raw material components; Polyester polyol accounts for that 62-75%, isocyanates account for 20-30%, butanediol accounts for 5-8%;
Two, negative pressure feeding: be evacuated to negative 1 kilogram of pressure, the polyester polyols raw polyol is added in the first purification jar 3 by the first reinforced valve 13, butanediol is by in the first reinforced valve 13 addings first purification jar 3, and isocyanates adds in the 3rd purification jar 5 by the 4th charging valve 53;
Three,, make the first purification jar 3 be heated to 90-110 ℃, vacuum purification 0.5-1 hour to heat-conducting oil heating; The 3rd purification jar 5 is heated to 70-80 ℃; Vacuum purification 0.5-1 hour adds 1 kilogram of nitrogen pressure after the end of purifying;
Four, metering, mix, reaction: first purifies raw material in jars 3 through heating, pressurization back direct sending first retort 11, is incubated at 80 ℃; The 3rd purification jar 5 interior raw materials send second retort 42 after heating, pressurization, be incubated at 50-55 ℃; The material of first retort 11 and second retort 42 is delivered to second super mixer 22 through the 3rd metering conveying pump 50, the 4th metering conveying pump 51 delicate meterings respectively to carry out secondary and mixes fully;
Five, extrude: carry out abundant mixed material by second super mixer 22 and send into and carry out the continuous bulk melt polymerization in the double screw extruder 44, pressure 25-75 kilogram in the double screw extruder 44, temperature is controlled at 180-220 ℃, rotating speed 60-100 rev/min; The material that double screw extruder 44 is extruded in delivery pump 27 is sent into fondant filter 28, in the fondant filter 28 temperature 180-220 ℃;
Six, melt mixed, spinning: fondant filter 28 interior materials are incorporated dynamic mixer 23 with the polyisocyanic acid ester additive in the polyisocyanates additive tank 31 by the conveying of the 5th metering conveying pump 52 positive battery meterings by the conveying of delivery pump positive battery metering and are carried out the melt high-speed mixing, mix after 34 meterings of spinning delivery pump, and after being delivered to each spinning manifold master cylinder 55, pipeline enters in the manifold through spinning wheel cylinder 56 again, 180-220 ℃ of spinning the temperature inside the box, every cover manifold 32 correspondences are provided with two cover air channel casees 35, the spandex silk 36 corresponding following godet rollers that connect the godet roller 38 in the lead group of motors in the case of every cover air channel, last godet roller, spandex silk on the last godet roller is reeled by winding head 39, a slaking that falls, vanning again after sampling Detection is qualified.
Contrast accompanying drawing 2, the production equipment of fusion spinning fire resistant special type elastic spandex fiber, its structure is first to purify and jar the 3, the 3rd to purify and be respectively equipped with first reinforced valve the 13, the 4th reinforced valve 53 on jars 5, first efferent duct of purifying jar 3 connects the input pipe of first reaction tube 11, and the efferent duct of the 3rd purification jar 5 and the input pipe of second retort 42 join; The efferent duct of the efferent duct of first reaction tube 11, second retort 42 joins by first input pipe, second input pipe of the 3rd metering conveying pump 50, the 4th metering conveying pump 51 and second super mixer 22 respectively; The efferent duct of second super mixer 22 is connected in series with double screw extruder 44, delivery pump 27, fondant filter 28, and first efferent duct of fondant filter 28 connects the input pipe of making material conveying pump 57 and joins, the processing section; Second efferent duct of fondant filter 28 is connected in series with first input pipe of the 6th metering conveying pump 54 and dynamic mixer 23; Additive tank 31 is provided with nitrogen valve 25, and the efferent duct of additive tank 31 joins by second input pipe of the 5th metering conveying pump 52 with dynamic mixer 23; The efferent duct of dynamic mixer 23 is connected in series with spinning delivery pump 34, spinning master cylinder 55, spinning wheel cylinder 56 and manifold 32, every cover manifold 32 correspondences are provided with two cover air channel casees 35, spandex silk 36 correspondences in every cover air channel case 35 are connected on the following godet roller of godet roller 38, the last godet roller, and the spandex silk 36 on the last godet roller connects winding head 39.
Described first purified for jar the 3, the 3rd corresponding the joining of input pipe of purifying valve that jars 5 efferent duct also can be by separately and first cooling tank 6 and the 3rd cooling tank 8, and the efferent duct of first cooling tank 6 connects first input pipe of first super mixer 21 by first metering conveying pump 48; The efferent duct of first super mixer 21 connects the input pipe of the first reaction storage tank 9, the efferent duct of the first reaction storage tank 9 connects the input pipe of first retort 11, and the efferent duct of first retort 11 joins by first input pipe of the 3rd metering conveying pump 50 and second super mixer 22; The 3rd purification jar 5 input pipes by valve and the 3rd cooling tank 8 join, and the input pipe of the efferent duct of the 3rd cooling tank 8 and second retort 42 joins; The efferent duct of second retort 42 joins by second input pipe of the 4th metering conveying pump 51 and second super mixer 22;
The described first purification jar 3 also can and connect the second purification jar 4, on the second purification jar 4, establish the second reinforced valve 12, second purifies jars 4 is connected in series with second cooling tank 7, second metering conveying pump 49, and the efferent duct of second metering conveying pump 49 connects second input pipe of first super mixer 21.
Reactor switch board connection first purification jar 3, second purification that is provided with jar the 4, the 3rd purification jar 5, first cooling tank 6, second cooling tank 7, the 3rd cooling tank 8, the first reaction storage tank 9, second react the rotating speed of storage tank 10, first retort 11, second retort 42, first super mixer 21, second super mixer 22, first metering conveying pump 48, second metering conveying pump 49, the 3rd metering conveying pump 50, the 4th metering conveying pump 51, and in order to the temperature of controlling them and stirring, rotating speed, frequency.
This equipment also is provided with reactor switch board, double screw extruder switch board, manifold switch board, coiling switch board.Wherein reactor switch board connection first purification jar 3, second purification jar the 4, the 3rd purification jar 5, first cooling tank 6, second cooling tank 7, the 3rd cooling tank 8, the first reaction storage tank 9, second react the rotating speed of storage tank 10, first retort 11, second retort 42, first super mixer 21, second super mixer 22, first metering conveying pump 48, second metering conveying pump 49, the 3rd metering conveying pump 50, the 4th metering conveying pump 51, and in order to the temperature of controlling them and stirring, rotating speed, frequency; The double screw extruder switch board connects delivery pump 27, cooling and vacuum system, granulating system, and in order to control extruder electrical heating temperature, extruder rotating speed.The manifold switch board connects the 5th metering conveying pump 52, spinning delivery pump 34 and spinning manifold, the dynamic mixer of the 6th metering conveying pump 54, spinning master cylinder 55, spinning wheel cylinder 56, additive part, and in order to control their temperature, pressure.The coiling switch board is in order to spinning speed, up-coiler and the oil tanker of control godet roller.
Embodiment 1, divides two groups, and every group of mixed material 100Kg gets polyester polyol (model PBA-44) 62Kg, 75Kg by proportioning, isocyanates (model MDI) 30Kg, 20Kg, butanediol (model BDO-1,4) 8Kg, 5Kg.
Negative pressure feeding: be evacuated to and bear 1 kilogram of pressure, by in the first reinforced valve 13 addings first purification jar 3, isocyanates adds in the 3rd purification jar 5 by the 4th charging valve 53 with polyester polyol, butanediol;
To heat-conducting oil heating, make first purification jar 3 interior raw materials be heated to 90 ℃, vacuum was purified 0.5 hour; The 3rd purification jar 5 interior raw materials are heated to 70 ℃; Vacuum was purified 0.5 hour, added 1 kilogram of pressure after the end of purifying;
Metering, mix, reaction: first raw materials of purifying in jars 3 send second retort 42 through purify raw materials in jars 5 of heating, pressurization back direct sending first retort 11, the three through heating, after pressurizeing; Material insulation in first retort 11 is at 80 ℃; Material insulation in second retort 42 is at 50 ℃; The material of first retort 11 and second retort 42 is delivered to second super mixer 22 through the 3rd metering conveying pump 50, the 4th metering conveying pump 51 delicate meterings respectively to be mixed fully;
Extrude: undertaken sending into after secondary fully mixes by second super mixer 22 and carry out the continuous bulk melt polymerization in the double screw extruder 44,25 kilograms of the pressure in the double screw extruder 44, temperature is controlled at 180 ℃, 60 rev/mins of rotating speeds; The material that double screw extruder 44 is extruded in delivery pump 27 is sent into fondant filter 28,180 ℃ of the temperature in the fondant filter 28;
Melt mixed, spinning: the polyisocyanates that in additive tank 31, adds 11kg earlier.Material is carried to incorporate into by the 5th metering conveying pump 52 positive battery meterings by the polyisocyanates of delivery pump positive battery metering conveying in additive tank 31 and is carried out the melt high-speed mixing in the dynamic mixer 23 in the fondant filter 28, mix after 34 meterings of spinning delivery pump, and be delivered to each spinning master cylinder 55 through pipeline, enter in the manifold through spinning wheel cylinder 56 again, 180 ℃ of spinning the temperature inside the box, every cover manifold 32 correspondences are provided with two cover air channel casees 35, spandex silk 36 correspondences in the case of every cover air channel are connected to the following godet roller of the godet roller 38 in the lead group of motors, on the last godet roller, spandex silk 36 on the last godet roller is reeled by winding head 39, a slaking that falls, vanning again after sampling Detection is qualified.
Embodiment 2, divide two groups, and every group of mixed material 100Kg gets polyester polyol (model PBA-44) 62Kg, 75Kg by proportioning, isocyanates (model MDI) 30Kg, 20Kg, butanediol (model BDO-1,4) 8Kg, 5Kg; First group adds polyether polyol (model PTMG) 8Kg, second group in addition and adds polyether polyol (model PTMG) 16Kg in addition;
Negative pressure feeding: be evacuated to negative 1 kilogram of pressure, polyester polyol, butanediol are added first by first reinforced valve 13, the second reinforced valve 12 respectively purifies and jar 3, second purifies in jars 4, isocyanates adds in the 3rd purification jar 5 by the 4th charging valve 53, and polyether polyol adds the first purification jar by the first reinforced valve;
To heat-conducting oil heating, make first purification jar 3, second a purification jar 4 be heated to 100 ℃, vacuum was purified 1 hour; The 3rd purification jar 5 is heated to 80 ℃; Vacuum was purified 1 hour, purification adds 1 kilogram of nitrogen pressure after finishing, raw material in first purification jar 3, second purification jar the 4, the 3rd purification jar 5 correspondence respectively is depressed in first cooling tank 6, second cooling tank 7, the 3rd cooling tank 8, the temperature of first cooling tank 6, second cooling tank 7 is cooled to 55 ℃, insulation was protected nitrogen pressure one hour, the temperature of the 3rd cooling tank 8 is cooled to 50 ℃, and insulation was protected nitrogen pressure one hour;
Metering, mixing, reaction: after heating, pressurization, cooling, first cooling tank 6, second cooling tank, 7 interior raw materials enter super mixer 21 by first metering conveying pump 48, second metering conveying pump 49 respectively; Enter the first reaction storage tank 9 and the second reaction storage tank 10 after the mixing, 70 ℃ of degassing insulations, prepolymerization in 3 hours, two jars are used alternatingly; Deliver to first retort 11 then, insulation is at 80 ℃; Raw material in the 3rd cooling tank 8 is delivered to second retort 42, and insulation is at 55 ℃; The material of first retort 11 and second retort 42 mixes fully through the 3rd metering conveying pump 50, the 4th metering conveying pump 51 delicate metering delivery pump to the second super mixers 22 respectively;
Extrude: carry out the continuous bulk melt polymerization in the double screw extruder 44 by sending into after the second time, super mixer 22 fully mixed, 75 kilograms of the pressure in the double screw extruder 44, temperature is controlled at 220 ℃, 100 rev/mins of rotating speeds; The material that double screw extruder 44 is extruded in delivery pump 27 is sent into fondant filter 28,220 ℃ of the temperature in the fondant filter 28;
Melt mixed, spinning: add additive polyisocyanates 10Kg in the first additive tank 31, material is carried polyisocyanates 1 with additive tank 31 in to incorporate dynamic mixer 23 into by the conveying of the 5th metering conveying pump 52 positive battery meterings by the delivery pump positive battery metering to carry out the melt high-speed mixing in fondant filter 28, mix after 34 meterings of spinning delivery pump, and after being delivered to each spinning manifold master cylinder 55, pipeline enters in the manifold through spinning wheel cylinder 56 again, 220 ℃ of spinning the temperature inside the box, every cover manifold 32 correspondences are provided with two cover air channel casees 35, spandex silk 36 correspondences in the case of every cover air channel are connected to the following godet roller of the godet roller 38 in the lead group of motors, on the last godet roller, spandex silk 36 on the last godet roller is reeled by winding head 39, a slaking that falls, vanning again after sampling Detection is qualified.
Embodiment 3, divide two groups, and every group of mixed material 100Kg gets polyester polyol (model PBA-44) 62Kg, 75Kg by proportioning, isocyanates (model MDI) 30Kg, 20Kg, butanediol (model BDO-1,4) 8Kg, 5Kg; First group adds polycaprolactone polyol (model PCL) 8Kg in addition, and second group adds polycaprolactone polyol (model PCL) 25Kg in addition;
Negative pressure feeding: be evacuated to negative 1 kilogram of pressure, polyester polyol is added in the first purification jar 3 by the first reinforced valve 13, butanediol add by the second reinforced valve 12 second purify in jars 4, isocyanates adds the 3rd by the 4th charging valve 53 and purifies in jars 5, polycaprolactone polyol adds first by the first reinforced valve 13 and purifies jar;
To heat-conducting oil heating, make first purification jar 3, second a purification jar 4 be heated to 100 ℃, vacuum was purified 1 hour; The 3rd purification jar 5 is heated to 75 ℃; Vacuum was purified 1 hour, added 1 kilogram of nitrogen pressure after the end of purifying; With first purify jar 3, second purify jar the 4, the 3rd purify in jars 5 raw material respectively correspondence be depressed in first cooling tank 6, second cooling tank 7, the 3rd cooling tank 8, the temperature of first cooling tank 6, second cooling tank 7 is cooled to 65 ℃, insulation was protected nitrogen pressure one hour, the temperature of the 3rd cooling tank 8 is cooled to 55 ℃, and insulation was protected nitrogen pressure one hour;
Metering, mixing, reaction: enter first super mixer 21 by first metering conveying pump 48, second metering conveying pump 49 respectively through heating, first cooling tank 6 of pressurization, the raw material in second cooling tank 7; Enter the first reaction storage tank 9 and the second reaction storage tank 10 after the mixing respectively, 70 ℃ of degassing insulations, prepolymerization in 3 hours, two jars are used alternatingly; Deliver to first retort 11 then, insulation is at 80 ℃; Raw material in the 3rd cooling tank 8 is delivered to second retort 42, and insulation is at 55 ℃; The material of first retort 11 and second retort 42 mixes fully through the 3rd metering conveying pump 50, the 4th metering conveying pump 51 delicate metering delivery pump to the second super mixers 22 respectively;
Extrude: undertaken sending into after secondary fully mixes by second super mixer 22 and carry out the continuous bulk melt polymerization in the double screw extruder 44,50 kilograms of the pressure in the double screw extruder 44, temperature is controlled at 200 ℃, 80 rev/mins of rotating speeds; The material that double screw extruder 44 is extruded in delivery pump 27 is sent into fondant filter 28,200 ℃ of the temperature in the fondant filter 28;
Melt mixed, spinning: in additive tank 31, add additive polyisocyanates 9Kg earlier; Fondant filter 28 interior materials are incorporated dynamic mixer 23 by the additive polyisocyanates of delivery pump positive battery metering conveying in additive tank 31 into by the conveying of the 5th metering conveying pump 52 positive battery meterings and are carried out the melt high-speed mixing, mix after 34 meterings of spinning delivery pump, and after being delivered to each spinning manifold master cylinder 55, pipeline enters in the manifold through spinning wheel cylinder 56 again, 200 ℃ of spinning the temperature inside the box, every cover manifold 32 correspondences are provided with two cover air channel casees 35, spandex silk 36 correspondences in the case of every cover air channel are connected to the following godet roller of the godet roller 38 in the lead group of motors, on the last godet roller, spandex silk 36 on the last godet roller is reeled by winding head 39, a slaking that falls, vanning again after sampling Detection is qualified.
Embodiment 4, divide two groups, and every group of mixed material 100Kg gets polyester polyol (model PBA-44) 62Kg, 75Kg by proportioning, isocyanates (model MDI) 30Kg, 20Kg, butanediol (model BDO-1,4) 8Kg, 5Kg; First group adds antioxidant (model 1010) 0.3Kg in addition, and second group adds antioxidant (model 1010) 0.8Kg in addition;
Negative pressure feeding: be evacuated to negative 1 kilogram of pressure, polyester polyol, butanediol are added by the first reinforced valve 13 first purify in jars 3, isocyanates adds the 3rd by the 4th charging valve 53 and purifies in jars 5, antioxidant is pre-applied in the polyester polyol;
To heat-conducting oil heating, make the first purification jar 3 be heated to 90 ℃, vacuum was purified 0.5 hour; The 3rd purification jar 5 is heated to 70 ℃; Vacuum was purified 0.5 hour, added 1 kilogram of pressure after the end of purifying;
Metering, mix, reaction: first raw material of purifying in jars 3 is purified jars 5 through heating, is sent second retort 42 after pressurizeing through heating, pressurization back direct sending first retort 11, the three; Material insulation in first retort 11 is at 80 ℃; Material insulation in second retort 42 is at 55 ℃; The material of first retort 11 and second retort 42 is delivered to second super mixer 22 through the 3rd metering conveying pump 50, the 4th metering conveying pump 51 delicate meterings respectively to be mixed fully;
Expressing technique, melt mixed, spinning technique are with embodiment 1.
Embodiment 5,
Divide two groups, every group of mixed material 100Kg gets polyester polyol (model PBA-44) 62Kg, 75Kg by proportioning, isocyanates (model MDI) 30Kg, 20Kg, butanediol (model BDO-1,4) 8Kg, 5Kg; First group adds polyether polyol (model PTMG) 6Kg, polycaprolactone polyol (model PCL) 8Kg, antioxidant (model 1010) 0.3K in addition; Second group adds polyether polyol (model PTMG) 16Kg, polycaprolactone polyol (model PCL) 25Kg, antioxidant (model 1010) 0.8Kg in addition;
Negative pressure feeding: be evacuated to negative 1 kilogram of pressure, polyester polyol, butanediol add first by first reinforced valve 13, the second reinforced valve 12 respectively and purify and jar 3, second purify in jars 4, isocyanates adds in the 3rd purification jar 5 by the 4th charging valve 53, polyether polyol, polycaprolactone polyol add the first purification jar by the first reinforced valve, and antioxidant is pre-applied in the polyester polyol;
Heat-conducting oil heating technology, metering, mixing, reaction process, expressing technique, melt mixed, spinning technique are with embodiment 3.
Effect: the method has realized the purpose that spandex directly spins, and has reduced intermediate link, reduces cost, and has reached zero disposal of pollutants.
The product main performance index:
Project unit's technical indicator
Intensity C N/dtex 1.00-1.50
Elongation % 450-550
Elastic recovery rate % 92-96
Heat resistance (2mch) ℃ 150
Boiling water shrinkage (60mm) % 84
Use effectiveness: solved that existing dry spinning, wet spinning, chemical reaction spinning and chemical reaction spin that in its spinning process environmental pollution is big, complex process, problem that cost is high; Simultaneously, also solved the problem of fusion slice spinning product non-refractory and hot water resistance difference.
Claims (9)
1, the method for fusion spinning fire resistant special type elastic spandex fiber is characterized in that processing step is divided into one successively, the weight ratio of raw material components; Polyester polyol accounts for that 62-75%, isocyanates account for 20-30%, butanediol accounts for 5-8%;
Two, negative pressure feeding: be evacuated to negative 1 kilogram of pressure, the polyester polyols raw polyol is added in the first purification jar by the first reinforced valve, butanediol by the first reinforced valve add first purify jar in, isocyanates by the 4th reinforced valve add the 3rd purify jar in;
Three,, make first a purification jar interior raw material be heated to 90-110 ℃, vacuum purification 0.5-1 hour to heat-conducting oil heating; The 3rd a purification jar interior raw material is heated to 70-80 ℃; Vacuum purification 0.5-1 hour adds 1 kilogram of nitrogen pressure after the end of purifying;
Four, metering, mix, reaction: first the raw material in purifying jar is incubated at 80 ℃ through heating, pressurization back direct sending first retort; The 3rd purification jar interior material send second retort after heating, pressurization, be incubated at 50-55 ℃; Material in first retort and second retort is delivered to second super mixer 22 through the 3rd metering conveying pump, the 4th metering conveying pump delicate metering respectively to carry out secondary and fully mixes;
Five, extrude: undertaken sending into after secondary fully mixes by second super mixer and carry out the continuous bulk melt polymerization in the double screw extruder, the pressure 25-75 kilogram in the double screw extruder, temperature is controlled at 180-220 ℃, rotating speed 60-100 rev/min; The material that double screw extruder is extruded in delivery pump is sent into fondant filter, in the fondant filter temperature 180-220 ℃;
Six, melt mixed, spinning: in additive tank, add polyisocyanates 9-11Kg earlier; The interior material of fondant filter is incorporated dynamic mixer by the polyisocyanates of delivery pump positive battery metering conveying in additive tank into by the conveying of the 5th metering conveying pump positive battery metering and is carried out the melt high-speed mixing, mix after the metering of spinning delivery pump, and be delivered to each spinning manifold master cylinder through pipeline, enter in the manifold through the spinning wheel cylinder again, 180-220 ℃ of spinning the temperature inside the box, every cover manifold correspondence is provided with two cover air channel casees, spandex silk correspondence in the case of every cover air channel is connected to the following godet roller of the godet roller in the lead group of motors, on the last godet roller, spandex silk on the last godet roller is reeled by winding head, a slaking that falls, vanning again after sampling Detection is qualified.
2, the method for fusion spinning fire resistant special type elastic spandex fiber according to claim 1 is characterized in that the weight ratio of processing step one, raw material components; Polyester polyol accounts for 62-75%, isocyanates accounts for 20-30%, and other adds polyether polyol and accounts for the 8-16% of gross weight or add the 8-25% that polycaprolactone polyol accounts for gross weight in addition; Or add the 0.3-0.8% that antioxidant accounts for gross weight in addition.
3, the method for fusion spinning fire resistant special type elastic spandex fiber according to claim 1 is characterized in that the weight ratio of processing step one, raw material components: polyester polyol accounts for that 62-72.7%, isocyanates account for 8-30%, butanediol accounts for 5-8%; Other adds 6-16, the 8-25% that polycaprolactone polyol accounts for gross weight, the 0.3-0.8% that antioxidant accounts for gross weight that polyether polyol accounts for gross weight.
4, the method for fusion spinning fire resistant special type elastic spandex fiber according to claim 1 is characterized in that antioxidant is pre-applied in the polyester polyol; Polyether polyol adds the first purification jar by the first reinforced valve; Polycaprolactone polyol adds in the first purification jar by the first reinforced valve.
5, the method for fusion spinning fire resistant special type elastic spandex fiber according to claim 1 is characterized in that additive polyisocyanates 9-11Kg.
6, the method for fusion spinning fire resistant special type elastic spandex fiber according to claim 1, it is characterized in that processing step two, negative pressure feeding: be evacuated to negative 1 kilogram of pressure, the polyester polyols raw polyol is added in the first purification jar by the first reinforced valve, the butanediol raw material by the second reinforced valve add second purify jar in, the isocyanates raw material by the 4th reinforced valve add the 3rd purify jar in; Processing step three, to heat-conducting oil heating, make first to purify jar and the second jar interior raw material of purifying is heated to 90-110 ℃, vacuum purification 0.5-1 hour; The 3rd a purification jar interior raw material is heated to 70-80 ℃; Vacuum purification 0.5-1 hour adds 1 kilogram of nitrogen pressure after the end of purifying; With first purify jar, second purify jar, the 3rd in purifying jar raw material respectively correspondence be depressed in first cooling tank, second cooling tank, the 3rd cooling tank, temperature in first cooling tank, second cooling tank is cooled to 65 ℃, insulation was protected nitrogen pressure one hour, the temperature of the 3rd cooling tank 8 is cooled to 55 ℃, and insulation was protected nitrogen pressure one hour; Processing step four, metering, mixing, reaction: the raw material of first cooling tank, second cooling tank is sent into first super mixer by first metering conveying pump, second metering conveying pump respectively after heating, pressurization, send into the first reaction storage pipe, the second reaction storage pipe after the mixing, 70 ℃ of degassing insulations, prepolymerization in 3 hours, two jars are used alternatingly; Incorporate first retort then into, insulation is at 80 ℃; Sending in second retort in the 3rd cooling tank, insulation is at 50-55 ℃; Material in first retort, second retort enters second super mixer by the 3rd metering conveying pump, the 4th metering conveying pump respectively to carry out secondary and fully mixes.
7, the production equipment of fusion spinning fire resistant special type elastic spandex fiber, it is characterized in that first purifying jar, the 3rd be respectively equipped with the first reinforced valve, the 4th reinforced valve on purifying jar, first efferent duct of purifying jar connects the input pipe of first retort, the efferent duct of the 3rd purification jar and the input pipe of second retort join, and the efferent duct of the efferent duct of first retort, second retort joins by first input pipe, second input pipe of the 3rd metering conveying pump, the 4th metering conveying pump and second super mixer respectively; The efferent duct of second super mixer is connected in series with the input pipe of double screw extruder, delivery pump, fondant filter; First efferent duct of fondant filter connects the input pipe of making material conveying pump; Second efferent duct of fondant filter joins by first input pipe of the 6th metering conveying pump and dynamic mixer; Additive tank is provided with nitrogen valve, and the efferent duct of additive tank joins by second input pipe of the 5th metering conveying pump and dynamic mixer; The efferent duct of dynamic mixer is connected in series with spinning delivery pump, spinning master cylinder, spinning wheel cylinder and manifold, every cover manifold correspondence is provided with two cover air channel casees, spandex silk correspondence in the case of every cover air channel is connected on the following godet roller of godet roller, the last godet roller, and last godet roller connects winding head.
8, the production equipment of fusion spinning fire resistant special type elastic spandex fiber according to claim 7, the valve of it is characterized in that described first purifying jar, the 3rd efferent duct of purifying jar also can be by separately and corresponding the joining of input pipe of first cooling tank and the 3rd cooling tank, the efferent duct of first cooling tank connects first input pipe of first super mixer by first metering conveying pump; The efferent duct of first super mixer connects the input pipe of the first reaction storage tank, and the efferent duct of the first reaction storage tank connects the input pipe of first retort, and the efferent duct of first retort joins by first input pipe of the 3rd metering conveying pump and second super mixer; The 3rd purification jar input pipe by valve and the 3rd cooling tank joins, and the input pipe of the efferent duct of the 3rd cooling tank and second retort joins; The efferent duct of second retort joins by second input pipe of the 4th metering conveying pump and second super mixer;
9, the production equipment of fusion spinning fire resistant special type elastic spandex fiber according to claim 7, it is characterized in that the described first purification jar can and connect the second purification jar, on the second purification jar, establish the second reinforced valve, the second purification jar is connected in series with second cooling tank, second metering conveying pump, and the efferent duct of second metering conveying pump connects second input pipe of first super mixer.
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