CN101205637A - Method for preparing high-strength high-modulus superhigh molecular weight polyethylene flat fibre - Google Patents

Method for preparing high-strength high-modulus superhigh molecular weight polyethylene flat fibre Download PDF

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Publication number
CN101205637A
CN101205637A CNA2006101474246A CN200610147424A CN101205637A CN 101205637 A CN101205637 A CN 101205637A CN A2006101474246 A CNA2006101474246 A CN A2006101474246A CN 200610147424 A CN200610147424 A CN 200610147424A CN 101205637 A CN101205637 A CN 101205637A
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China
Prior art keywords
molecular weight
polyethylene
fiber
slot
modulus
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CNA2006101474246A
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Chinese (zh)
Inventor
胡盼盼
刘兆峰
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Individual
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Individual
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Priority to CNA2006101474246A priority Critical patent/CN101205637A/en
Priority to US12/299,205 priority patent/US20100233480A1/en
Priority to PCT/CN2007/002906 priority patent/WO2008055405A1/en
Priority to DE602007008600T priority patent/DE602007008600D1/en
Priority to AT07816520T priority patent/ATE478178T1/en
Priority to EP07816520A priority patent/EP2080824B1/en
Publication of CN101205637A publication Critical patent/CN101205637A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a manufacturing method for high strength high modulus polyethylene flat fibers, wherein, ultrahigh molecular weight polyethylene powder (with weight average relative molecular weight of 1 to 6 million) is dissolved in proper solvent and prepared into stock solution with the concentration of 4 to 60 percent; the stock solution passes through a twin-screw, a tank and a metering pump at certain temperature and then passes through a spinneret provided with rectangular holes for extrusion molding (length-width ratio of the rectangular holes is 4 to 20), and jelly glue fibers are obtained; after extraction and drying, the fibers are stretched for multiple times with stretching multiple of 30 to 60 and stretching temperature of 80 to 130 DEG C, and finished products of the high strength high modulus polyethylene flat fibers are obtained.

Description

The high-strength high-modulus superhigh molecular weight polyethylene flat fibre preparation method
Technical field:
The present invention relates to a kind of preparation method of high-strength high-modulus polyethylene flat fiber, belong to field of polymer material preparing technology.
Super high molecular weight polyethylene gel spinning one super drawing technology prepares high strength, high-modulus polyethylene fiber is applied for a patent in 1979 by Dutch DSM N. V., obtains BP GB2042414 and GB2051667.U.S. Allied company subsequently, the Toyobo-DSM company that Japan and Holland connection are built, Japanese Mitsui company has all realized suitability for industrialized production.Nineteen eighty-two U.S. Allied company has obtained the technology patent US4413110 that produces superhigh molecular weight polyethylene fibers.China Textile University has also obtained patent 89107905 and 97106768.
The letter of super high molecular weight polyethylene gel spinning key step is chatted as follows: ultra-high molecular weight polyethylene is added in the suitable solvent stirring and dissolving make solution, solution is extruded by screw extruder, through the spinneret orifice moulding, cool off then, extraction, dry ultra-drawing, finally obtain finished fiber.
Contain in the gel spun fiber and carry out ultra-drawing again after a large amount of first solvents must be removed solvent in the fiber with second solvent extraction, just can obtain high-strength high-modulus fibre, the speed of extraction process is except that outside the Pass having with second solvent that uses and extraction process, and is also relevant with the path of solvent diffuse.The solvent of fibrous outer preferentially diffuses out from gel spun fiber in the extraction process.The difference of the longer diffusion velocity in path is bigger.It is the poly gel spun fiber of garden tee section that said method makes, and sees that from the fibre section wall is thicker.Difference is bigger, and form skin-core structure and more go through evil, the ultra-drawing of this uneven structure influence fiber, and then influence the mechanical property of finished fiber.At present, the patent of the production high density polyethylene (HDPE) profiled filament film that has proposed has USP4115492, USP5294338, and it is thermoplasticity hollow fiber film assembly and manufacture method that USP6436319, ZL200510049263 all adopt melt spinning method, patent USP5695702 and ZL95193838.
Super-high relative molecular weight high strength of the present invention, high modulus polyethylene flat fiber, fibre section are flat, rectangular, and wall is thin and even.Shorten the fiber internal solvent greatly and diffused out the path of gel spun fiber.Improve extraction efficiency, saved extraction and use second solvent, reduced cost, eliminated structural inhomogeneity, further improved the mechanical property of finished fiber.
Implementation method step: comprise polyethylene powder with super-high relative molecular weight 1,000,000~6,000,000, be dissolved in the appropriate solvent, be mixed with concentration and be 4%~60% homogeneous solution, adopt the gel spinning method, at a certain temperature through twin-screw, casing, measuring pump, be that the filament plate extrusion molding of disputing, extraction, drying, the ultra-drawing of the slot of 4-20 gets the flat polyethylene fiber of high-strength and high-modulus to having length-width ratio.Wherein poly average weight-molecular mass is at 100-600 ten thousand.Comprise the polyethylene of 4%~60% super-high relative molecular weight and 96%~40% solvent in the solution stoste, the temperature of stoste spinning is controlled at 140~260 ℃.Stoste must be by a spinnerets with slot, and the length-width ratio of slot is 4-20, and the fiber that obtains extracts, and the back is dry, ultra-drawing again, and 80~130 ℃ of draft temperatures, draw ratio is at 30~60 times.Obtain the flat polyethylene finished fiber of high-strength and high-modulus at last.
Below by example method of the present invention is described, but the present invention is not limited only to this.
Example 1
Ultra-high molecular weight polyethylene (relatively average molecular mass 4,500,000), dissolvant white oil is mixed with concentration and is 8% homogeneous solution and quantitatively feeds double screw extruder.Extruder diameter 25mm, L/D=45, temperature is controlled at 240 ℃.Screw extruder rotating speed 30rpm.Extrudate is measured the back from having the spinnerets ejection of rectangle spinneret orifice through the filter casing to measuring pump, and the length-width ratio of slot is 8.Go into water-bath then and extract after treatment, drying, ultra-drawing, the stretching general times is 40, the flat high-strength high-modulus polyethylene fiber that obtains, intensity reaches 30cN/dtex, and modulus is more than 1000cN/dtex.
Example 2
Ultra-high molecular weight polyethylene (relatively average molecular mass 5,000,000), dissolvant white oil is mixed with concentration and is 12% homogeneous solution and quantitatively feeds double screw extruder.Extruder diameter 25mm, L/D=64, temperature is controlled at 250 ℃, screw extruder rotating speed 40rpm.Extrudate is measured the back from having the spinnerets ejection of rectangle spinneret orifice through the filter casing to measuring pump, and the length-width ratio of slot is 12.Go into water-bath then and extract dry ultra-drawing after treatment, the stretching general times is 40, the flat high-strength high-modulus polyethylene fiber that obtains, and intensity reaches 30cN/dtex, and modulus is more than 1000cN/dtex.

Claims (7)

1. the preparation method of flat high-strength and high-modulus ultrahigh molecular weight polyethylene fibre is characterized in that: with the polyethylene powder of super-high relative molecular weight 1,000,000~6,000,000, be mixed with concentration and be 4%~60% homogeneous solution, adopt the gel spinning method, at a certain temperature through twin-screw, casing, measuring pump, be that the filament plate of disputing of 4-20 slot is extruded, extracted, dry, ultra-drawing gets the flat polyethylene fiber of high-strength and high-modulus to having length-width ratio.Wherein poly average weight-molecular mass is at 100-600 ten thousand.Comprise the polyethylene of 4%~60% super-high relative molecular weight and 96%~40% solvent in the solution stoste, the temperature of stoste spinning is controlled at 140~260 ℃.Stoste must be by a spinnerets with slot, and the length-width ratio of slot is 5-15, and the gel spun fiber that obtains is through the row extraction, and the back is dry, ultra-drawing again, and 80~130 ℃ of draft temperatures, draw ratio is at 30~60 times.Obtain the flat polyethylene finished fiber of high-strength and high-modulus at last.
2. according to claim 1: the average weight-molecular mass of ultra-high molecular weight polyethylene is 1,000,000~6,000,000.
3. according to claim 1: as to comprise the polyethylene of 4%~60% super-high relative molecular weight and 96%~40% solvent in the stoste.
4. according to claim 1: the solvent spinning temperature is 140~260 ℃.
5. according to claim 1: the tensile fiber temperature is at 80~130 ℃.
6. according to claim 1: solution is through a spinnerets with slot, and the length-width ratio of slot is 4-20.
7. according to claim 1: dry back tensile fiber multiple is 30~60 times.
CNA2006101474246A 2006-11-08 2006-12-18 Method for preparing high-strength high-modulus superhigh molecular weight polyethylene flat fibre Pending CN101205637A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CNA2006101474246A CN101205637A (en) 2006-12-18 2006-12-18 Method for preparing high-strength high-modulus superhigh molecular weight polyethylene flat fibre
US12/299,205 US20100233480A1 (en) 2006-11-08 2007-10-09 Process for producing fiber of ultra high molecular weight polyethylene
PCT/CN2007/002906 WO2008055405A1 (en) 2006-11-08 2007-10-09 A process for producing fiber of ultra high molecular weight polyethylene
DE602007008600T DE602007008600D1 (en) 2006-11-08 2007-10-09 METHOD FOR PRODUCING FIBERS FROM POLYETHYLENE WITH ULTRA-HIGH MOLECULAR WEIGHT
AT07816520T ATE478178T1 (en) 2006-11-08 2007-10-09 METHOD FOR PRODUCING ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE FIBERS
EP07816520A EP2080824B1 (en) 2006-11-08 2007-10-09 A process for producing fiber of ultra high molecular weight polyethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006101474246A CN101205637A (en) 2006-12-18 2006-12-18 Method for preparing high-strength high-modulus superhigh molecular weight polyethylene flat fibre

Publications (1)

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CN101205637A true CN101205637A (en) 2008-06-25

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154749A (en) * 2011-04-20 2011-08-17 东华大学 Preparation method of coarse denier ultrahigh molecular weight polyethylene (UHMWPE) fiber yarn
WO2012062053A1 (en) 2010-11-08 2012-05-18 宁波大成新材料股份有限公司 Preparation method for ultrahigh molecular weight polyethylene fiber
CN108950711A (en) * 2018-09-06 2018-12-07 山东莱威新材料有限公司 A kind of superhigh molecular weight polyethylene flat silk and preparation method thereof
CN109097847A (en) * 2018-10-31 2018-12-28 盐城优和博新材料有限公司 A kind of production method of moisture absorbing and sweat releasing high-strength high-modulus polyethylene
CN110832126A (en) * 2017-07-20 2020-02-21 东洋纺株式会社 Multifilament and monofilament comprising the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012062053A1 (en) 2010-11-08 2012-05-18 宁波大成新材料股份有限公司 Preparation method for ultrahigh molecular weight polyethylene fiber
CN102154749A (en) * 2011-04-20 2011-08-17 东华大学 Preparation method of coarse denier ultrahigh molecular weight polyethylene (UHMWPE) fiber yarn
CN102154749B (en) * 2011-04-20 2013-01-02 东华大学 Preparation method of coarse denier ultrahigh molecular weight polyethylene (UHMWPE) fiber yarn
CN110832126A (en) * 2017-07-20 2020-02-21 东洋纺株式会社 Multifilament and monofilament comprising the same
CN110832126B (en) * 2017-07-20 2022-09-16 东洋纺株式会社 Multifilament and monofilament comprising the same
CN108950711A (en) * 2018-09-06 2018-12-07 山东莱威新材料有限公司 A kind of superhigh molecular weight polyethylene flat silk and preparation method thereof
CN109097847A (en) * 2018-10-31 2018-12-28 盐城优和博新材料有限公司 A kind of production method of moisture absorbing and sweat releasing high-strength high-modulus polyethylene

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Open date: 20080625