CN101096775A - Durable high performance composite conductive fibre and manufacturing method - Google Patents
Durable high performance composite conductive fibre and manufacturing method Download PDFInfo
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- CN101096775A CN101096775A CNA2007100759820A CN200710075982A CN101096775A CN 101096775 A CN101096775 A CN 101096775A CN A2007100759820 A CNA2007100759820 A CN A2007100759820A CN 200710075982 A CN200710075982 A CN 200710075982A CN 101096775 A CN101096775 A CN 101096775A
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Abstract
The invention discloses a durable high-performance composite conductive fiber and preparing method, which is characterized by the following: comprising with conductive layer and non-conducting layer; comprising the conductive layer with carrier resin as 20-30% (wt)conductive component and 80-70% (wt)non-conducting component; choosing the non-conducting as polyester or polyamide fibre-forming high polymer; choosing the conductive layer as three-flanged type and multilayer type; choosing the conductive component in the conductive layer as high conductive carbon black; utilizing mixed melting method; dispersing in the carrier resin; pelleting with double screw; forming conductive particle; choosing special three-flanged type and multilayer layer composite spinning component; utilizing composite spinning process technology. This invention possesses low conductive ratio, high conductivity and good durability, which can meet the demand of high level purification.
Description
Technical field
The present invention relates to a kind of durable high performance composite conductive fibre and manufacture method, being specifically related to conductive layer is trilobal cross and multi-layered type composite conducting fiber and manufacture method.
Background technology
Synthetic fiber, particularly polyester fiber and polyamide fiber have excellent performance at aspects such as DIMENSIONAL STABILITY, heat resistance and resistances to chemical reagents, be widely used in dress material and industrial circle, but because its hygroscopicity is poor, friction back easily generation static gives rise to trouble and endangers.
Along with developing rapidly of Modern high-tech industry, the product quality problem that causes owing to static and airborne micro dust particle more shows outstanding.Industries such as electronics, oil, chemical industry, Aero-Space, biological products, Precision Machining usually cause burning, blast or influence disaster and troubles such as product quality, interference Instrument operate as normal owing to static.All must under 100 grades even 10 grades of purification conditions, produce such as computer magnetic head, large scale integrated circuit, extensive LCD panel, biological products etc., and it is also very responsive to static, if there is not high level anti-static dust-free clothing to shield and eliminate static and dust that human body produces, be at all can't ordinary production.
Solving electrostatic hazard and bothering effective measures is exactly to add a spot of conductive fiber in textiles, reaches the purpose of elimination static through corona discharge.Industrially developed country such as Japan and the United States all drop into great amount of manpower, financial resources, and various conductive fibers and manufacturing equipment have been carried out systematically research and development.Using at present maximum and the most effectual is organic composite conducting fiber series.It is conducting medium that this organic composite conducting fiber all adopts conductive carbon black; make organic composite conducting fiber with fiber-forming polymers such as polyester or polyamide through composite spinning, and all applied for patent protection according to the difference of the complex morphological of fiber cross section conductive layer.The various carbon containing composite conducting fiber patents of various countries major company exploitation are as shown in the table.
| Fiber name | Manufacturing company | Fiber cross section | Patent or open |
| Antron | Du Pont (U.S.) | See Fig. 1 | ?JP52-31450 |
| The ell Telon | Meng Shan is (U.S.) | See Fig. 2 | ?JP53-44579 |
| The Petter synthetic fibre | Clock spins (Japan) | See Fig. 3 | ?JP56-37322 |
| U.S.A adds III | You Nijika (Japan) | See Fig. 4 | ?JK54-134117 |
| Ku Lakabo | Kuraray (Japan) | See Fig. 5 | ?JK55-1337 |
| KE-9 | (Japan) is spun by Japan | See Fig. 6 | ?JK55-98913 |
The resistivity of the composite conducting fiber of the various fiber cross sections of above patented method preparation is all greater than 10
7Ω/cm.
Because conductive coating structure and complex morphological have caused that this type of composite conducting fiber resistivity is big, electric conductivity is low, poor durability, add at fabric that the conductive fiber amount that need add man-hour is big, cost is high, and can't satisfy high-level purification requirement.
Summary of the invention
The objective of the invention is to provide the composite conducting fiber and the preparation method of a kind of high conductivity, high-durability at the deficiency of composite conducting fiber in the past, the cross section conductive layer that is characterized in composite conducting fiber is that trilobal cross or multi-layered type are compound, the resistivity of composite conducting fiber≤10
5Ω/cm.
According to design provided by the present invention, this composite conducting fiber is made up of conductive layer and non-conductive layer, and wherein conductive layer is formed with the vector resin that contains the non-conductive composition of 80～70% (wt) for containing 20～30% (wt) conductive compositions.Non-conductive layer is polyester or polyamide fiber-forming polymer.
Composite conducting fiber of the present invention is the composite conducting fiber that conductive layer and non-conductive layer form through the conjugation composite spinning, can adopt the high multiple drawing-off of low speed spinning two-step process also can adopt high speed spinning to hang down multiple drawing-off two-step process, be preferably spinning drawing-off one-step technology and make this composite conducting fiber.Make one of composite conducting fiber key of the present invention and be specially designed composite spinneret pack, because it is very thin that conductive layer distributes, easier most advanced and sophisticated corona discharge, in fabric, only need add and seldom measure the purpose that composite conducting fiber of the present invention can reach elimination static, reduce the manufacturing cost of fabric.
Employed conductive compositions is a conductive carbon black among the present invention, and the ratio resistance when pulverulence is lower than 10
3Ω .cm all can use, preferably 10
2Below the Ω .cm, in fact than resistance 10
2～10
-2The conductive carbon black of Ω .cm all is suitable for the present invention, and the particle diameter of conductive carbon black must be quite little, and common particle diameter is below 1 μ, and is the most desirable below 0.3 μ.
Dispersant is the polyethylene vinyl acetate among the present invention.
Composite conducting fiber of the present invention and manufacture method are achieved in that
1. at first conductive component and dispersant are put into high-speed mixer in proportion, mixing temperature is controlled at 60～120 ℃, and it is mixed.Cooling and it is ground into particulate powder then.
2. conductive particle powder and the vector resin powder with step 1 preparation joins in the double screw extruder in proportion, and the control extrusion temperature is extruded the blend pelletizing at 250～290 ℃.
3. the conducting particles of step 2 preparation is dry in vacuum drum, and adopting composite spinning equipment and technology to make conductive layer then is the composite conducting fiber of trilobal cross or multi-layered type.
The method of testing of composite conducting fiber of the present invention is as follows:
1. hank knotting law regulation execution among the GB/T14343 is pressed in the line density test.
2. the execution of GB/T14344 regulation is pressed in the test of fracture strength and elongation at break.
3. fiber cross section test: see at microscopically with Hardy's thin cross-section device section back and to look into and take pictures.
4. fabric resistor rate test:
Adopt voltammetry,, try to achieve the resistance value of sample unit length by calculating deciding to measure the current value that flows through sample under the voltage.
Experimental rig is seen Fig. 7.
Testing procedure:
Take 10 sections on the long sample of 110mm ± 1mm at random, coat electrical conductivity respectively greater than 1.0 * 10 at the head that sample two ends 5mm is long
-1The S/m conducting resinl.
On sample testing frame 1, sample 3 two ends are sandwiched in spacing between the jaw respectively and are in the jaw of two metal clips 2 of 100mm, the length that the every end of sample is held is 5mm, chucking power should be greater than 1N, and the jaw planted agent of metal clip is coated with conducting resinl, keeps and the sample excellent contact.
The voltage of D.C. regulated power supply (0V-1000V is adjustable) 4 is adjusted into 100V, again switch 6 is pulled to a from b, observe the current value of ammeter 5 behind the 1min, if 10
-4A～10
-5In the A scope, read current value then; If greater than 10
-4A then adds 10V voltage on sample; If less than 10
-5A then adds 1000V voltage on sample, the corresponding again current value of reading behind the 1min is pressed Ohm's law calculated resistance value, and is converted to the resistance value of every centimetre length.Obtain the mean value of 10 measurement results, keep two position effective digitals, and indicate added voltage value when measuring.
Description of drawings
Fig. 1～Fig. 6 is background technology fiber cross section figure
Fig. 7 is fabric resistor rate experimental rig figure
Fig. 8 is the embodiment of the invention 1,2,3,5 fibre section figure
Fig. 9 is the embodiment of the invention 4 fibre section figure
The specific embodiment
Below by example the present invention is specifically described.The A component is a conductive layer, and the B component is a non-conductive layer.
With 20 parts of particle diameters is that the high conductive carbon black of 1 μ and 20 parts polyethylene vinyl acetate join in the high-speed mixer, carries out high-speed mixing under 105 ℃ temperature, cooling and be ground into graininess after 30 minutes.The polyester powder of graininess blend and 60 parts joins in the high-speed mixer, carrying out heat under 150 ℃ mixed 15 minutes, cold again mixing discharging in 15 minutes joins in the hopper of double screw extruder, becomes the conductive layer particle at 280 ℃ of following extruding pelletizations, after super-dry as the A component.Dried polyester slice is as the B component.
A component and B component melt extrude in screw extruder separately, enter measuring pump separately, enter in the composite spining module that the A component is a trilobal cross after the compositely proportional metering by A/B=30/70, spin in the assembly compound, A, B component spray from spinneret orifice by distributing, at 20 ℃, cool off, oil, reel under the wind friction velocity of 75%RH 0.5m/sec.Winding speed is 3000m/min, passes through the two-region heat stretching machine again at 85 ℃/180 ℃, and 1.5 multiples that stretch stretch, reel under the draw speed 580m/min.The composite conducting fiber cross section of making as shown in Figure 8.
The line density of composite conducting fiber is 23dtex/2F, and fracture strength is 3.1CN/dtex, and elongation at break is 43%, and resistivity is 6.2 * 10
4Ω/cm.
A, B set of dispense ratio and compound spinning condition when are all with example 1, only be that winding speed is 1500m/min, adopt the double drawing machine at 85 ℃/180 ℃, 3.0 multiples that stretch carry out stretching and winding under the draw speed 600m/min, the composite conducting fiber cross section of manufacturing is with example 1, the line density of conductive fiber is 23.7dtex/2F, fracture strength is 3.3CN/dtex, extension at break 36%, and resistivity is 7.3 * 10
4Ω/cm.
A, B set of dispense ratio and compound spinning condition when are all with example 1, but enter in GR1 and the GR2 hot-rolling after adopting the spun spun filament of spinning drawing-off one-step technology to oil and carry out hot drawing-off through oil tanker, the GR1 temperature is set in 88 ℃, and the GR2 temperature is set in 123 ℃, and up-coiler speed is 4050m/min.The cross section of composite conducting fiber is with example 1, and the line density of conductive fiber is 22.6dtex/2F, and fracture strength is 3.1CN/dtex, and extension at break is 46%, and resistivity is 5.7 * 10
4Ω/cm.
A, B set of dispense ratio, spinning silk winding and draw conditions only are that the compound of A, B component is 45/55 than A/B all with example 1, adopt the compound assembly that spins of multi-layered type, and the composite conducting fiber cross section of manufacturing is a multi-layered type, sees shown in Figure 9.
The line density of composite conducting fiber is 24.1dtex/2F, and fracture strength is 3.1CN/dtex, and elongation at break is 39%, and resistivity is 2.6 * 10
4Ω/cm.
With 20 parts of particle diameters is that the high conductive carbon black of 1 μ and 20 parts polyethylene vinyl acetate join in the high-speed mixer, carries out high-speed mixing under 105 ℃ temperature, cooling and be ground into graininess after 30 minutes.The polyamide powder of graininess blend and 60 parts joins in the high-speed mixer, carrying out heat under 130 ℃ mixed 15 minutes, cold again mixing discharging in 15 minutes joins in the hopper of double screw extruder, become the conductive layer particle at 270 ℃ of following extruding pelletizations, as the A component, the polyamide of moisture 100ppm is done section as the B component after super-dry.
A, B set of dispense than and the compound process of spinning technique when all with embodiment 1,1.4 times of drawing-offs.The composite conducting fiber cross section is with embodiment 1.
The line density of composite conducting fiber is 22.7dtex/2F, and fracture strength is 3.6CN/dtex, and elongation at break is 47%, and resistivity is 3.3 * 10
4Ω/cm.
Claims (7)
1. durable high performance composite conductive fibre, it is characterized in that this composite conducting fiber is made up of conductive layer and non-conductive layer, wherein conductive layer contains the polyester or the polyamide of 20～30% (wt) conductive compositions, and non-conductive layer is polyester or the gentle thing of the fine height of polyamide one-tenth.
2. according to right 1 described durable high performance composite conductive fibre, its feature is that also the fiber cross section conductive layer of this composite conducting fiber is that trilobal cross is compound.
3. according to right 1 described durable high performance composite conductive fibre, its feature is that also the fiber cross section conductive layer of this composite conducting fiber is that multi-layered type is compound.
4. be also that according to right 1,2,3 its features of described durable high performance composite conductive fibre the conductive compositions of conductive layer is high conductive carbon black, vector resin is polyester or polyamide in the conductive layer.
5. be also that according to right 1,2,3,4 described its features of durability composite conducting fiber conductive layer is formed with the vector resin that contains the non-conductive composition of 80～70% (wt) by containing 20～30% (wt) conductive compositions, vector resin is polyester or polyamide.
6. also be the compositely proportional 30/70 or 45/55 of conductive layer and non-conductive layer according to right 1 its feature of described durable high performance composite conductive fibre.
7. be also that according to right 1 its feature of described durable high performance composite conductive fibre the manufacture method of this composite conducting fiber adopts spinning drawing-off two-step method or technical method of spinning and pulling one-step all can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100759820A CN101096775A (en) | 2007-07-12 | 2007-07-12 | Durable high performance composite conductive fibre and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100759820A CN101096775A (en) | 2007-07-12 | 2007-07-12 | Durable high performance composite conductive fibre and manufacturing method |
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| CN101096775A true CN101096775A (en) | 2008-01-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8192316B2 (en) | 2009-02-03 | 2012-06-05 | The Gates Corporation | Belt with wear-resistant anti-static fabric |
| CN102031588B (en) * | 2009-09-29 | 2013-05-01 | 北京中纺优丝特种纤维科技有限公司 | Durable carbon black conductive fiber and preparation method thereof |
| CN104278385A (en) * | 2014-10-24 | 2015-01-14 | 太仓环球化纤有限公司 | Process for producing antistatic polyamide 6 (PA6) bulk yarns through one-step process |
| CN109778347A (en) * | 2018-12-06 | 2019-05-21 | 中国纺织科学研究院有限公司 | Odd-shaped cross section composite conducting fiber and preparation method thereof, Antistatic Fabric and its charging method |
| CN111364121A (en) * | 2018-12-25 | 2020-07-03 | 北京中纺优丝特种纤维科技有限公司 | Antibacterial conductive fiber and preparation method thereof |
-
2007
- 2007-07-12 CN CNA2007100759820A patent/CN101096775A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8192316B2 (en) | 2009-02-03 | 2012-06-05 | The Gates Corporation | Belt with wear-resistant anti-static fabric |
| CN102031588B (en) * | 2009-09-29 | 2013-05-01 | 北京中纺优丝特种纤维科技有限公司 | Durable carbon black conductive fiber and preparation method thereof |
| CN104278385A (en) * | 2014-10-24 | 2015-01-14 | 太仓环球化纤有限公司 | Process for producing antistatic polyamide 6 (PA6) bulk yarns through one-step process |
| CN109778347A (en) * | 2018-12-06 | 2019-05-21 | 中国纺织科学研究院有限公司 | Odd-shaped cross section composite conducting fiber and preparation method thereof, Antistatic Fabric and its charging method |
| CN111364121A (en) * | 2018-12-25 | 2020-07-03 | 北京中纺优丝特种纤维科技有限公司 | Antibacterial conductive fiber and preparation method thereof |
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Open date: 20080102 |