CN1912198B - Drawing extraction method in preparation process of ultrahigh molecular weight polytene - Google Patents
Drawing extraction method in preparation process of ultrahigh molecular weight polytene Download PDFInfo
- Publication number
- CN1912198B CN1912198B CN2006101126106A CN200610112610A CN1912198B CN 1912198 B CN1912198 B CN 1912198B CN 2006101126106 A CN2006101126106 A CN 2006101126106A CN 200610112610 A CN200610112610 A CN 200610112610A CN 1912198 B CN1912198 B CN 1912198B
- Authority
- CN
- China
- Prior art keywords
- extraction
- fiber
- drafting
- extraction method
- molecular weight
- 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.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000605 extraction Methods 0.000 title claims description 115
- 239000000835 fiber Substances 0.000 claims abstract description 114
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 8
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 8
- -1 industrial naptha Chemical compound 0.000 claims description 35
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 1
- 238000009827 uniform distribution Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 35
- 239000002904 solvent Substances 0.000 abstract description 29
- 230000008569 process Effects 0.000 abstract description 26
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000000284 extract Substances 0.000 abstract description 4
- 230000001054 cortical effect Effects 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 33
- 229920000573 polyethylene Polymers 0.000 description 33
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 239000005662 Paraffin oil Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000009987 spinning Methods 0.000 description 8
- 239000012752 auxiliary agent Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000002386 leaching Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000001891 gel spinning Methods 0.000 description 3
- 238000002166 wet spinning Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000000578 dry spinning Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Artificial Filaments (AREA)
Abstract
The invention relates to a drafting extracting method used in ultrahigh molecular weight polyethylene fiber preparation course. It processes drafting while extracting to renew fiber surface, remove possible cortical layer to increase extracting speed. Meanwhile the solvent of the as formed fiber will be easily outflow strand silk because of the drafting. In addition, it can make the cavity of as formed fiber close after stand silk outflow to make its structure more compact. The liquid extract can keep drafted fiber surface temperature even and mass transfer process stable. In order to gain proper drafting scaling factor, it is need to distribute proper drafting scaling factor among each extracting groove.
Description
Technical field
The invention belongs to field of polymer material preparing technology, particularly the modification method of drawing-off in the superhigh molecular weight polyethylene fibers production technology and extraction workshop section.
Background technology
Superhigh molecular weight polyethylene fibers claims high strength and modulus polyethylene fiber, high-orientation polyethylene fiber, high-performance polyethylene fibres again.Superhigh molecular weight polyethylene fibers has high strength, high-modulus, high-orientation, is widely used in the manufacturing of shellproof protective articles, rope, hawser, fishnet, sports equipment.Superhigh molecular weight polyethylene fibers is the highest commercialization high-performance fiber of present specific strength.
Smith of Dutch DSM N. V. in 1979 and Lemstra have invented gel spinning and have produced the technology of superhigh molecular weight polyethylene fibers, and have obtained BP GB2042414 and GB2051667.Nineteen eighty-two, the AlliedSignal company (1999 with Honeywell company amalgamation, claim Honeywell company) of the U.S. also proposed the patent US4413110 of the production superhigh molecular weight polyethylene fibers of oneself.DSM N. V. has realized the suitability for industrialized production of gel spinning legal system superhigh molecular weight polyethylene fibers in nineteen ninety.
The main technique step of now common in the world gel spinning manufactured superhigh molecular weight polyethylene fibers has: ultra-high molecular weight polyethylene is dissolved in first solvent is mixed with polyethylene solution, this solution is extruded by screw extruder, after the spinning manifold ejection, cooled and solidified becomes gelatinous fibre, be called as-spun fibre, go out first solvent with volatile second solvent extraction again, surpass the drawing-off and the heat setting process of the hot drawing-off of multiple at last, finally obtain finished fiber.
Production technology mainly contains two big classes in the world now, and a class is spun dry spinning method into representative with DSM and Japan, and another kind of is the wet spinning process of representative with Honeywell and Mitsui.Both main distinctions are to have adopted different solvents and subsequent technique.DSM technology adopts the decahydronaphthalene solvent.Decahydronaphthalene is volatile, can adopt dry spinning, has saved extraction workshop section thereafter; Honeywell adopts the paraffin oil solvent, needs follow-up extraction workshop section, with second solvent first solvent extraction is come out.
Generally speaking, as the intrinsic viscosity of the polyethylene powders of raw material 5dL/g at least, the fibre strength of making like this is at least 25cN/dtex, and modulus is at least 700cN/dtex.The relative molecular weight of material polyethylene must be greater than 1,000,000, more preferably greater than 4,000,000.
In the chemical fibre production process, the fiber after solidifying spinning moulding is referred to as as-spun fibre.Because the structure of as-spun fibre is still unstable, the supramolecular structure order of fiber is lower, and physical and mechanical properties can't satisfy instructions for use, must be by a series of backs manufacturing procedure, and wherein most important process is exactly drawing-off and HEAT SETTING.
Drawing-off claims again to stretch.The mechanism of drawing process is to promote big molecule along the axial orientation of fiber.In drawing process, the macromolecular chain or the aggregated structure of fiber are unfolded, and along fiber axis to oriented.In the time of orientation, be accompanied by the variation of phase usually, and the variation of other structure.Structure that various as-spun fibres are taken place in drawing process and changes of properties are also inequality, but a common ground is arranged all, be the fiber less ordered region big molecule along fiber axis to the degree of orientation improve greatly, simultaneously with the variation of other configuration aspects such as density, degree of crystallinity.Because big molecule is orientated along fiber axis in the fiber, form and increased molecular separating force, fiber bears the strand number that adds tension force to be increased, thereby the fracture strength of fiber is significantly improved, ductility descends, ABRASION RESISTANCE and the fatigue strength of various dissimilar deformation also obviously improved.
The residing medium of fiber divides during according to stretching, and the mode of tensile fiber generally has the stretching of doing, steam bath to stretch and wets three kinds of stretchings.Wet stretching is meant that fiber is surrounded by liquid medium when stretching, and the heat transmission is arranged, and also has mass transport process in the stretching in forming process, even chemical reaction is arranged.Because fiber is immersed in the body lotion fully when stretching, the heat transfer between fiber and the medium, mass transport process are carried out comparatively fast and are comparatively even
Tensile stress-the emergent property of wet spinning as-spun fibre belongs to even stretching, does not generally have tangible yield stress, does not also produce necking penomena.And the formation condition of solidifying strand is very big to the tensility influence of frozen glue body.Plasticization is played in the increase of solvent in the fiber, make frozen glue have more elasticity and plasticity, but solvent is too many, and the crosslinking points number of cubic network is less, network a little less than, intensity is inevitable lower, is unable to undergo super drawing.So before stretching, must regulate the swellbility of coagulated yarn, make the crosslinking points of construction unit have proper intensity.The decreased number of gel spun fiber medium chain entanglement crosslink can improve the maximum tension multiple of fiber.
In the wet spinning process, need the extraction process of eluting solvent, claim leaching process again.In extraction process, two kinds of different mass transport processes may take place.A kind of is that solvent in the fiber oozes out from fiber; Another kind is after extractant oozes out from fiber, to be dissolved in the extractant, is extracted the process that agent is taken away.The speed of extraction process is by the leaching rate of solvent and the decision of the dissolving diffusion velocity in extractant.If leaching rate obviously greater than the dissolving diffusion velocity, can cause solvent to assemble at fiber surface, reduce leaching rate, thereby reduce extraction rate.If the dissolving diffusion velocity obviously greater than leaching rate, can cause the solvent strength of fiber surface to descend faster than fibrous inside, if in the extractant infiltrated fiber, form cortex at fiber surface easily, hinder solvent and further ooze out.
In the superhigh molecular weight polyethylene fibers production process, the extractant of use has industrial naptha, benzene,toluene,xylene, fluorochlorohydrocarbon, benzinum, chlorohydrocarbon etc., also has the mixture of other hydro carbons etc.Desirable extractant not only needs good effect of extracting, also needs low toxicity, safety, lower-price characteristic.Fluorochlorohydrocarbon is one of best extractant of existing effect of extracting, and low toxicity, does not fire, and operating environment is better also safer, but owing to protect the restriction of ozone layer international convention, will progressively stop using.
Generally speaking, in the extraction process of fiber, stress application or the stress that applies are very not little, promptly in the extraction process seldom or do not have a drawing-off.At home and abroad all will extract in the documents such as patent about superhigh molecular weight polyethylene fibers preparation and drawing-off (cold drawing-off) is divided into two workshop sections.Cold drawing-off before the extraction its objective is in order to control the fiber number of product, and fiber is attenuated to reduce the extraction time; The purpose that extracts dried hot drawing-off is in order to improve the macromolecular degree of orientation of fibrous inside to reach high strength and high-modulus.Carry out abstraction drafting,, perhaps can save cold drawing-off workshop section except quickening to reduce the rate of extraction multiple of cold drawing-off.Carry out abstraction drafting,, help making the fiber number of fiber more even because the heat transfer effect of liquid is better than air.Generally speaking, because drawing-off can or be carried out before extraction afterwards, for some extractant, for example rate of extraction is not that the advantage that very fast extractant carries out abstraction drafting is not very outstanding, in addition, carry out the difficulty that the drawing-off operation can improve technology controlling and process simultaneously at extraction process, so slective extraction in the past and drawing-off are separately carried out.
Summary of the invention
The objective of the invention is to propose the drawing extraction method in a kind of preparation process of ultrahigh molecular weight polyethylene fiber, in extraction process, add drawing-off, make this process become the drawing extraction process.When making fibrous inside have solvent, have lubricated and increase the effect of fiber plasticity, make that drawing-off is more or less freely to be carried out.Extractant exists around the fiber, can keep the fiber surface temperature even, makes fibre number more even, reduces the possibility that the defect point in the fiber produces, and finally helps the raising of fiber product performance.
Drawing extraction method in a kind of preparation process of ultrahigh molecular weight polyethylene fiber that the present invention proposes is characterized in that: carry out secondary, the formation of the multistage drafting extracting operation more than three grades or three grades drawing extraction process in extraction process simultaneously.
Characteristics of the present invention and effect:
The present invention adopts the method for classification speed-raising in the extraction process of superhigh molecular weight polyethylene fibers preparation, fiber is applied certain stress, forms the drawing-off effect.In extraction process, carry out drawing-off, not only can remove the cortex that fiber surface forms effectively, promote Surface Renewal.And fiber can impel its inner solvent to ooze out quickly under the effect that is subjected to tensile stress.In addition, the existence of tensile stress also can promote the micropore closure in the fiber, finally helps the raising of fiber strength.When there is solvent in fibrous inside, have effect lubricated and increase fiber plasticity, make more or less freely the carrying out that stretch.Extractant exists around the fiber, can keep the fiber surface temperature even.
The present invention is specially adapted to adopt the occasion of the very fast extractant of rate of extraction such as chlorohydrocarbon.
Description of drawings
Fig. 1 is the manufacturing process flow schematic diagram of the superhigh molecular weight polyethylene fibers of employing the inventive method.
Fig. 2 is the drawing extraction process schematic diagram of employing extraction tank of the present invention.
Fig. 3 adopts the process flow diagram of extraction box for the present invention.
The specific embodiment
The inventive method reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
Drawing extraction method in the preparation process of ultrahigh molecular weight polyethylene fiber that the present invention proposes is characterized in that: carry out the drawing-off operation in extraction process simultaneously.
The manufacturing process flow of the superhigh molecular weight polyethylene fibers of employing the inventive method as shown in Figure 1.Solid material 1 such as ultra-high molecular weight polyethylene powder and auxiliary agent and solvent 2 mix the back and add in the double screw extruder 5 (screw extruder is driven by motor 4) in container 3, the measuring pump metering, through spinning manifold 6,, enter and solidify tank 7 and solidify by spinnerets ejection.Drive effluent trough through godet roller 8 grades, pass through preliminary draft machine 12 (claiming cold drawing-off again, adopts when of the present invention that this workshop section can save, and also can keep) then, enter extraction tank 9 and extract the drawing extraction process that stretches simultaneously.After the drawing extraction process was finished, fiber entered baking oven 10 and carries out drying.After the oven dry, carry out multistage hot drawing-off, last coiling and molding 11 is packaged into finished product.
Drawing extraction process of the present invention can adopt one-level, secondary or multistage drafting extraction stages.The present invention adopt extraction tank the drawing extraction process flow process as shown in Figure 2, among the figure, fiber 21 is by roll dies 24, one by one by extraction sulculus 23, roll dies drives the drawing-off that forms fiber 21 by motor 22.Every grade of extraction tank is made up of a plurality of extraction sulculuses, and extractant is entered by the extraction sulculus of an end, by the extraction sulculus outflow of the other end.Extraction tank among the figure is made up of 8 extraction sulculuses, promptly constitutes 8 grades of drawing extraction stages, and extraction sulculus quantity is not limited to 8 during practical application, and can be less than 8 also can be more than 8.Extractant in the described drawing extraction process is a kind of among chlorohydrocarbon, benzene,toluene,xylene, industrial naptha, benzinum, kerosene or the fluorochlorohydrocarbon.
The present invention adopts technological process that extraction box carries out one-level drawing extraction process as shown in Figure 3, and among the figure, fiber passes through in extraction box 34 through godet roller 32 and 35.Extraction box top is provided with godet roller 32, is driven by motor 33.According to actual conditions, a motor can drive one or two godet rollers, perhaps a plurality of godet rollers.The godet roller 35 of bottom does not connect with motor.
For the effect of Surface Renewal and stress application can constantly be provided in extraction process, the present invention provides repeatedly drawing-off in extraction process, promptly adopt drawing-off step by step.In order to obtain the effect of drawing-off step by step, specific practice is to adopt the method for classification speed-raising, need set up a plurality of speed in extraction stages, promptly needs a plurality of motors, produces multistage speed and distributes.Adopt drawing-off step by step, drafting stress is distributed in the fibre abstraction process more widely, and can make drafting stress control within the specific limits.Multistage drafting can adopt one-level, adopts two-stage more better, preferably adopts three grades.Generally be used to extract the long occasion of route more than three grades.The drawing-off multiplying power of multistage drafting can be identical, also can be different; Being that the drawing-off multiplying power can be a mean allocation, also can be non-mean allocation.
The intensity of superhigh molecular weight polyethylene fibers depends primarily on the orientation of sub polyethylene subchain in the fiber.The orientation of strand is good more, and intensity is high more.In the fiber process process, drawing-offs at different levels all have contribution to molecular chain orientation, but maximum with hot drawing-off contribution.Because drawing-off multiplying power total in the fiber process process is certain, can keep higher multiplying power for making hot drawing-off, the multiplying power of other drawing-off is not declared too high.Rule of thumb, the drawing-off multiplying power number of abstraction drafting is no more than 3 times better at 1～5 times, preferably is no more than 2.5 times.
The drawing-off multiplying power is that the speed by godet roller is set to different numerical value and reaches.Fiber passes extractant liquid by continuous change the Silk Road circuitously under the drive of a plurality of godet rollers in extraction equipments such as extraction tank or extraction box, thereby increase the time of staying in extractant liquid.For reaching the speed that can set different godet rollers, each godet roller can be by different driven by motor.In the practical operation, in order to reduce investment outlay and to simplify the operation, also can be with several godet rollers by same driven by motor; Perhaps wherein the part godet roller be can't help driven by motor, keeps driven state; Perhaps the part godet roller is fixed, only played change fiber movement direction, the effect of motion-promotion force is not provided.If only the speed of setting section godet roller is promptly only set under the special driven by motor situation for the part godet roller, can only set the godet roller speed on extraction equipment tops such as extraction tank or extraction box.It is comparatively convenient with operation that motor is installed like this.
In the production process of superhigh molecular weight polyethylene fibers, sometimes before entering extraction workshop section, a drawing-off workshop section is arranged.The present invention adopts the drawing extraction process, can omit this drawing-off workshop section, thereby simplifies whole production technology.
Fiber after extraction is finished enters drying box and carries out drying, carries out hot drawing-off then, is wound into finished product.
Extraction back fiber adopts hot drawing-off, and the total draft multiple is more than 30.
The embodiment of the drawing extraction of superhigh molecular weight polyethylene fibers of the present invention is respectively described below:
Embodiment 1
Behind the polyethylene powders and auxiliary agent mixing with relative molecular weight 5,000,000, add charging aperture through hopper.The charging rate of powder is 0.4 kg/minute.The solvent paraffin oil after the measuring pump metering, enters charging aperture by storage tank.The charging rate of solvent paraffin oil is 6 kg/minute.Two kinds of materials enter screw extruder after fully mixing dissolving.Enter spinning manifold then,, be extruded into silk through spinnerets.Through solidifying the tank cooling, form gelatinous fibre, adopt dichloromethane extraction.The speed that enters extraction tank is 17.4 meters/minute, and the speed that goes out extraction tank is 25 meters/minute.The drawing extraction process of present embodiment is the single-stage drawing extraction, sets up three grades of drawing-offs in the extraction tank, and the godet roller speed of need setting has three, is followed successively by 17.4 meters/minute, 20.8 meters/minute, 25 meters/minute.Last drying and three grades of hot drawing-offs, the total draft multiple is 30.
Finally make the superhigh molecular weight polyethylene fibers of high strength and modulus.The intensity of fiber reaches more than the 25cN/dtex, and modulus reaches more than the 960cN/dtex.The oil content of fiber is lower than 0.5%.
Embodiment 2
Behind the polyethylene powders and auxiliary agent mixing with relative molecular weight 5,000,000, add charging aperture through hopper.The charging rate of powder is 0.6 kg/minute.The solvent paraffin oil after the measuring pump metering, enters charging aperture by storage tank.The charging rate of solvent paraffin oil is 5 kg/minute.Two kinds of materials enter screw extruder after fully mixing dissolving.Enter spinning manifold then,, be extruded into silk through spinnerets.Through solidifying the tank cooling, form gelatinous fibre, adopt xylene extraction.The speed that enters extraction tank is 18 meters/minute, and the speed that goes out extraction tank is 35 meters/minute.The drawing extraction process of present embodiment is three grades of drawing extractions, set up three grades of drawing-offs in every grade of extraction tank, the godet roller speed of need setting has nine, is followed successively by 18 meters/minute, 19 meters/minute, 20.5 meters/minute, 22 meters/minute, 24 meters/minute, 26 meters/minute, 28.5 meters/minute, 32 meters/minute, 35 meters/minute.Last drying and three grades of hot drawing-offs, the total draft multiple is 32.
Finally make the superhigh molecular weight polyethylene fibers of high strength and modulus.The intensity of fiber reaches more than the 25cN/dtex, and modulus reaches more than the 960cN/dtex.The oil content of fiber is lower than 0.5%.
Embodiment 3
Behind the polyethylene powders and auxiliary agent mixing with relative molecular weight 5,000,000, add charging aperture through hopper.The charging rate of powder is 0.5 kg/minute.The solvent paraffin oil after the measuring pump metering, enters charging aperture by storage tank.The charging rate of solvent paraffin oil is 5 kg/minute.Two kinds of materials enter screw extruder after fully mixing dissolving.Enter spinning manifold then,, be extruded into silk through spinnerets.Through solidifying the tank cooling, form gelatinous fibre, adopt dichloromethane extraction.The speed that enters extraction tank is 15 meters/minute, and the speed that goes out extraction tank is 25 meters/minute.The drawing extraction process of present embodiment is a single-stage extraction, sets up three grades of drawing-offs in the extraction tank, and the godet roller speed of need setting has three, is followed successively by 15 meters/minute, 17.5 meters/minute, 25 meters/minute.Through oven dry and three grades of hot drawing-offs, the total draft multiple is 30 at last.
Finally make the superhigh molecular weight polyethylene fibers of high strength and modulus.The intensity of fiber reaches more than the 25cN/dtex, and modulus reaches more than the 960cN/dtex.The oil content of fiber is lower than 0.5%.
Embodiment 4
Behind the polyethylene powders and auxiliary agent mixing with relative molecular weight 5,000,000, add charging aperture through hopper.The charging rate of powder is 0.7 kg/minute.The solvent paraffin oil after the measuring pump metering, enters charging aperture by storage tank.The charging rate of solvent paraffin oil is 6 kg/minute.Two kinds of materials through fully mix and dissolve after enter screw extruder.Enter spinning manifold then,, be extruded into silk through spinnerets.Through solidifying the tank cooling, form gelatinous fibre, adopt dichloromethane extraction.The speed that enters extraction box is 14 meters/minute, and the speed that goes out extraction box is 30 meters/minute.The drawing extraction process of present embodiment adopts the secondary drawing extraction, set up three grades of drawing-offs in every grade of extraction box, the godet roller speed of need setting has six, is followed successively by 14 meters/minute, 16 meters/minute, 18.5 meters/minute, 22 meters/minute, 25.5 meters/minute, 30 meters/minute.Through oven dry and three grades of hot drawing-offs, the total draft multiple is 32 at last.
Finally make the superhigh molecular weight polyethylene fibers of high strength and modulus.The intensity of fiber reaches more than the 25cN/dtex, and modulus reaches more than the 960cN/dtex.The oil content of fiber is lower than 0.5%.
Embodiment 5
Behind the polyethylene powders and auxiliary agent mixing with relative molecular weight 5,000,000, add charging aperture through hopper.The charging rate of powder is 1 kg/minute.The solvent paraffin oil after the measuring pump metering, enters charging aperture by storage tank.The charging rate of solvent paraffin oil is 10 kg/minute.Two kinds of materials through fully mix and dissolve after enter screw extruder.Enter spinning manifold then,, be extruded into silk through spinnerets.Through solidifying the tank cooling, form gelatinous fibre, adopt dichloromethane extraction.The speed that enters extraction box is 14 meters/minute, and the speed that goes out extraction box is 25 meters/minute.The drawing extraction process of present embodiment adopts three grades of drawing extractions, set up the secondary drawing-off in every grade of extraction box, the godet roller speed of need setting has six, is followed successively by 14 meters/minute, 15 meters/minute, 16.5 meters/minute, 18 meters/minute, 21 meters/minute, 25 meters/minute.Through oven dry and three grades of hot drawing-offs, the total draft multiple is 32 at last.
Finally make the superhigh molecular weight polyethylene fibers of high strength and modulus.The intensity of fiber reaches more than the 25cN/dtex, and modulus reaches more than the 960cN/dtex.The oil content of fiber is lower than 0.5%.
Claims (8)
1. the drawing extraction method in the preparation process of ultrahigh molecular weight polyethylene fiber is characterized in that: carry out secondary simultaneously in extraction process, the multistage drafting extracting operation more than three grades or three grades constitutes the drawing extraction process.
2. drawing extraction method according to claim 1 is characterized in that: one-level drawing-off, secondary drawing-off, three grades of drawing-offs or the multistage drafting more than three grades are adopted in drawing-off in every grade of drawing extraction of described drawing extraction process operation.
3. drawing extraction method according to claim 1 and 2 is characterized in that: the multiple proportioning of described multistage drafting adopts uniform distribution or non-homogeneous distribution.
4. drawing extraction method according to claim 1 and 2 is characterized in that: the drafting multiple in the described drawing extraction process is at 1～5 times.
5. drawing extraction method according to claim 4 is characterized in that: described drawing-off multiplying power is that the speed by a plurality of godet rollers is set to different numerical value and reaches.
6. drawing extraction method according to claim 5 is characterized in that: described each godet roller is by different driven by motor, or with several godet rollers by same driven by motor; Perhaps wherein the part godet roller be can't help driven by motor, keeps driven state; Perhaps the part godet roller is fixed, only played change fiber movement direction, the effect of motion-promotion force is not provided.
7. drawing extraction method according to claim 1 is characterized in that: the equipment that described drawing extraction process is used is that extraction tank, extraction box or other are used for the extraction equipment of fiber desolventizing.
8. drawing extraction method according to claim 1 is characterized in that: the extractant in the described drawing extraction process is a kind of among chlorohydrocarbon, benzene,toluene,xylene, industrial naptha, benzinum, kerosene or the fluorochlorohydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101126106A CN1912198B (en) | 2006-08-25 | 2006-08-25 | Drawing extraction method in preparation process of ultrahigh molecular weight polytene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101126106A CN1912198B (en) | 2006-08-25 | 2006-08-25 | Drawing extraction method in preparation process of ultrahigh molecular weight polytene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1912198A CN1912198A (en) | 2007-02-14 |
| CN1912198B true CN1912198B (en) | 2010-08-25 |
Family
ID=37721243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101126106A Active CN1912198B (en) | 2006-08-25 | 2006-08-25 | Drawing extraction method in preparation process of ultrahigh molecular weight polytene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1912198B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2126167T3 (en) * | 2007-03-27 | 2011-02-28 | Dsm Ip Assets Bv | Process for removing residual spin solvent from a gel spun filament, the filament, multi-filament yarn and products comprising the filament |
| CN101757801B (en) * | 2008-12-23 | 2012-01-18 | 湖南中泰特种装备有限责任公司 | Process and device for extracting in multiple stages by high and low grooves |
| CN101768786B (en) * | 2010-03-10 | 2011-08-31 | 常熟绣珀纤维有限公司 | Preparation method of ultrahigh molecular weight polyethylene fiber |
-
2006
- 2006-08-25 CN CN2006101126106A patent/CN1912198B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1912198A (en) | 2007-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103290497B (en) | A kind of industry functional form 66 nylon fiber and preparation method thereof | |
| CN101775666B (en) | Preparation method of high-strength high-modulus polyethylene fiber | |
| CN101148783B (en) | Dry-method spinning technique for preparing super high molecular weight polyethylene fibre | |
| CN105862152A (en) | Production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments | |
| CN101935894A (en) | Method and equipment for preparing ultrahigh molecular weight polyethylene fibers | |
| CN107012522A (en) | Produce the production line and its production technology of Three-dimensional crimped hollow type terylene short fiber | |
| CN105951202B (en) | Polyethylene fibre, preparation method, preparation facilities and purposes | |
| CN100519847C (en) | Method for drying extractant during production of superhigh-molecular weight polyvinyl fibre | |
| WO2006056128A1 (en) | Method for continuously producing ultrahigh molecular weight polyethylene solution | |
| CN101012577A (en) | Extraction and desiccation method in preparing process of polyvinyl fibre with super high molecular weight | |
| CN1958274A (en) | Material of polyethylene in super high molecular weight for obstruction guard of highway, and fabricating method | |
| CN106948022A (en) | The preparation method of high concentration superhigh molecular weight polyethylene fibers spinning solution | |
| CN101748533B (en) | Draft process and equipment thereof for polyethylene fibres with superhigh molecular weight | |
| CN102277646A (en) | Method for manufacturing polyester industrial yarns with high size, high stability, high modulus and low shrink | |
| CN105544000A (en) | High-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber and preparation method thereof | |
| CN105350101A (en) | High-strength-type high-modulus low-shrinkage polyester industrial fiber and processing technology thereof | |
| CN1912198B (en) | Drawing extraction method in preparation process of ultrahigh molecular weight polytene | |
| CN109355718A (en) | A kind of production technology of high-tenacity polyethylene fibre | |
| CN101575756B (en) | Stretching method of ultra-high molecular weight polyethylene precursor fiber | |
| CN108004605A (en) | Strong porous superhigh molecular weight polyethylene fibers and preparation method in one kind | |
| CN109208107A (en) | A kind of ultra-high molecular weight polyethylene slit fibre and preparation method thereof | |
| CN104827686B (en) | A kind of string immersion system and method | |
| CN103122489A (en) | Ultrahigh molecular weight polyethylene monofilament combination and stretching forming method | |
| CN102418157B (en) | Method for preparing high-strength polyethene continuous fibers and product prepared by the method | |
| CN2797388Y (en) | Three-component multifunction melt composite spinning POY-EDY dual-purpose machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Winyarn High Performance Fibre Co., Ltd. Assignor: Beijing Tesidun New Materials Technology Development Co., Ltd. Contract record no.: 2011110000202 Denomination of invention: Drawing extraction method in preparation process of ultrahigh molecular weight polytene Granted publication date: 20100825 License type: Exclusive License Open date: 20070214 Record date: 20111228 |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING WINYARN HIGH PERFORMANCE FIBRE COMPANY LIM Free format text: FORMER OWNER: BEIJING TESIDUN NEW MATERIALS TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20120921 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Zhijian Inventor after: Wang Tiecheng Inventor after: Shi Yin Inventor after: Yin Yedong Inventor before: Shi Yin Inventor before: Yin Yedong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100084 CHAOYANG, BEIJING TO: 101407 HUAIROU, BEIJING Free format text: CORRECT: INVENTOR; FROM: SHI YIN YIN YEDONG TO: LI ZHIJIAN WANG TIECHENG SHI YIN YIN YEDONG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120921 Address after: 101407 Beijing Huairou Yanqi Industrial Development Zone, South West No. five building Patentee after: Beijing Winyarn High Performance Fibre Co., Ltd. Address before: 100084, Room 401, building C, Ye Qing building, No. 9 North Wangjing Road, Beijing, Chaoyang District Patentee before: Beijing Tesidun New Materials Technology Development Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: 246000 No. 18 Huancheng West Road, Anqing High-tech Zone, Anhui Province Patentee after: Anhui Weiya New Materials Technology Co.,Ltd. Address before: 101407 No.5 workshop, West District, Yanqi Industrial Development Zone, Huairou District, Beijing Patentee before: BEIJING WEIYA HIGH PERFORMANCE FIBER Co.,Ltd. |