CN108048922A - A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber - Google Patents
A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber Download PDFInfo
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- CN108048922A CN108048922A CN201711415323.7A CN201711415323A CN108048922A CN 108048922 A CN108048922 A CN 108048922A CN 201711415323 A CN201711415323 A CN 201711415323A CN 108048922 A CN108048922 A CN 108048922A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
- D01F13/04—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of synthetic polymers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber is unfigured islands-in-sea fiber of the extra large, polypropylene as island by preparing the controllable polyurethane screw rod blending of polypropylene and water solubility, melting, extruding spinning using water-soluble controllable polyurethane；Regulate and control sea component polyurethane to be water-soluble, then sea component can be reduced and polypropylene superfine fiber is made；The polyurethane being reduced in water is regulated to not water-soluble, then can will to be reduced in water polyurethane precipitation recycling, preparation process is environmental-friendly.Obtained superfine fibre can be widely used for the industries such as synthetic leather, knitting.Compared with prior art, invention increases the environmental-friendly preparation method of not figured type superfine fibre, environmental pollution and the wasting of resources caused by organic emission during current unfigured islands-in-sea fiber decrement can be overcome.
Description
Technical field
The present invention relates to fibre in differentiation fields, particularly relate to a kind of the environmental-friendly of not figured type polypropylene superfine fiber
Preparation method.
Background technology
Superfine fibre is often referred to 0.3 denier of fiber number（0.5 micron of diameter）Following fiber, it is saturating with cold-proof comfort, waterproof
Gas, filterability, deoil soil release performance the features such as, extensively using knitting, synthetic leather, electronic device process etc. industries.It is especially domestic
The yield of superfine fiber chemical leather is huge, occupies an important position in national economy.
There are many ways to processing superfine fibre, island method is one kind particularly important at present, the especially ultra-fine fibre of fabric of island-in-sea type
Wesy has hardly alternative advantage when synthetic leather：The gap that sea component leaves after being decremented makes island component and poly- ammonia
" release " effect is generated between ester, it can the fluffy sense of significant increase superfine fiber chemical leather, flexibility, tearing strength, ventilative saturating
The performances such as wet.
At present, the decrement mode of sea-island fibre is broadly divided into two kinds：Toluene is reduced and Alkali reduction, and toluene decrement is to use first
Benzene makees solvent by the sea component polyethylene in fiber（PE）It dissolves out fibrillation and becomes superfine fibre；Alkali reduction is by sea in lye
Component polyester（PET）Or modified poly ester（CO-PET）Hydrolysis washes out and fibrillation becomes superfine fibre.Although benzene is reduced relatively close
It is carried out in the environment closed, but decrement and polyethylene removal process still suffer from a large amount of toluene（85-150g/1kg fibers）Volatilization, makes
Into serious pollution and the wasting of resources；Terylene hydrolysis becomes terephthalate and ethylene glycol after Alkali reduction, is not easily recycled attached with height
Value added utilization, directly discharge also result in serious environmental pollution and the wasting of resources.
Patent ZL03121512.2, ZL201010554602.3, ZL200410013813.0 are proposed using polylactic acid or poly-
Vinyl alcohol is as sea component, and polylactic acid is polylactic acid hydrolysis, degradation when being reduced as sea component, and effect on environment is little, but makes
Into the wasting of resources；Polyvinyl alcohol is hygroscopic, and contact wetting can be tacky, is unfavorable for spinning technique, and the melting temperature of polyvinyl alcohol
Degree is with decomposition temperature very close to therefore polyvinyl alcohol is not suitable for melt spinning：Related personnel also uses for polyvinyl alcohol
Numerous studies work is carried out in terms of melt spinning, but is not made a breakthrough.
Patent：ZL201510604060.9 discloses a kind of sea-island fibre using water soluble polyurethane elastomer as sea：With
Water soluble polyurethane elastomer is sea, is island by being prepared for sea-island fibre in a manner of composite spinning by nylon 6, i.e. figured type is ultra-fine
Fiber.With nylon 6 or polyethylene terephthalate（PET）It is ultra-fine that figured type prepared by composite spinning mode for island component
Fiber can solve environmental pollution and problem of resource waste caused by figured type superfine fibre decrement process, but cannot pass through blending
Mode prepares not figured type superfine fibre, limits its application range；It is higher using nylon or polyester cost, and spinning process
Temperature is higher, high energy consumption；The superfine fibre prepared using nylon is not acidproof, alkaline-resisting using the superfine fibre of polyester preparation.
Therefore, the not production technology of figured type superfine fibre at present, can there are poisonous and hazardous organic during decrement
Object discharge cause environmental pollution or（With）The wasting of resources.Superfine fiber chemical leather at present about 80% is ultra-fine using not figured type
In the case of fiber, it is unfavorable for the sustainable development of superfine fiber chemical leather industry, is also unfavorable for holding for superfine fibre industry
Supervention exhibition.
The content of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art, provides a kind of not figured type polypropylene superfine fiber
Environmental-friendly preparation method, prepared unfigured islands-in-sea fiber can be reduced and in a mild condition in a mild condition
Sea component is recycled, low energy consumption for preparation process, environmental-friendly, and the superfine fibre of preparation is at low cost, wearability is good, moisture absorbing and sweat releasing effect
Substantially, the characteristic good to bronsted lowry acids and bases bronsted lowry resistance；Sea, the island component material of the indefinite island fiber can be used simultaneously, pass through tune
Finishing equipment and technique determine the spinning of island fiber.Figured type superfine fibre not can be widely used for the industries such as synthetic leather, knitting for this.
The present invention adopts the following technical scheme that：
By being made polyolefin high polymer and water-soluble controllable polyurethane screw rod blending, melting, extruding spinning with water solubility
The unfigured islands-in-sea fiber that controllable polyurethane is sea, polyolefin is island, polyolefin high polymer can be polyethylene, poly- third
Alkene, polybutene, it is contemplated that the melting temperature of polyolefin and the temperature in use of fiber, it is preferable to use polypropylene；Regulation and control sea component gathers
Urethane is water-soluble, sea component is reduced, polypropylene superfine fiber is made；The polyurethane being reduced in water is regulated to not water-soluble, then may be used
The polyurethane being reduced in water is precipitated into recycling, preparation process is environmental-friendly, is prepared especially by following steps：
A. by polypropylene and water-soluble controllable polyurethane with（45-60）：（55-40）Weight ratio tentatively mix, be then fed into
Single screw extrusion machine is further blended, melts, and being sent into filament spinning component through metering pump after carries out spinning, drawing-off, curling, dry tune
It is unfigured islands-in-sea fiber of the extra large, polypropylene as island that wet, severing, which is made using water-soluble controllable polyurethane,；Wherein, it is water-soluble
Controllable polyurethane is：Contain the polyurethane elastomer of potential hydrophilic groups in molecule, do not dissolved in spinning process
Water and pH value are not soluble in water under conditions of being 2-5, are dissolved in water under conditions of pH value is 9-11；Screw extruder temperature is：
（40、100、120、180、200、230、230）DEG C ± 25 DEG C, metering pump and filament spinning component temperature are：It 230 DEG C ± 25 DEG C, is spinning
The melt viscosity ratio of polypropylene and water-soluble controllable polyurethane is at a temperature of silk（3-9）:1；
B. water-soluble controllable polyurethane is sea, the unfigured islands-in-sea fiber that polypropylene is island be placed in pH value be 9-11, temperature
Spend in the water for 40-90 DEG C carry out 20-40 minutes sea-island fibre decrement, fibrillation, then by the fiber after fibrillation be washed with water to
Neutrality obtains polypropylene superfine fiber, collects decrement water；
C. the pH value for being reduced water is adjusted to 2-5, precipitates and filters out water-soluble controllable polyurethane.
Polyacrylic melting temperature is 165-175 DEG C, and the melting temperature of water-soluble controllable polyurethane is 135-165 DEG C.
Water-soluble controllable polyurethane is polyether-type, acid and alkali-resistance hydrolysis-type polyurethane elastomer.
The hole count of filament spinning component spinneret is 2000-50000 holes.
It is that pH value is adjusted using a kind in hydrochloric acid and sulfuric acid or its combination that the pH value of decrement water, which is adjusted to 2-5,.
By adjusting equipment and technique, the sea of the indefinite island fiber, the progress of island component material can be used to determine island accordingly
The spinning of type sea-island fibre.
From the above-mentioned description of this invention, compared with prior art, the present invention has the advantages that：
1st, the preparation method of not figured type polypropylene superfine fiber of the invention is environmental-friendly：Change by adjusting the acid-base property of environment
Become sea component polyurethane elastomer water solubility, reach the recycling of the decrement, sea component of unfigured islands-in-sea fiber, in the process without
Organic emission does not cause environmental pollution；Fiber decrement process, sea component removal process be not to sea component water soluble polyurethane bullet
The molecular backbone of property body damages, and can be reused after recycling, not cause the wasting of resources.
2nd, polypropylene superfine fiber prepared by the present invention, wearability is good, and wicking capacity is strong, moisture absorbing and sweat releasing effect is apparent, especially
It is good to bronsted lowry acids and bases bronsted lowry resistance.
3rd, the present invention is island component using polypropylene, and spinning can be carried out under relatively low temperature conditionss, can reduce spinning
Silk energy consumption.
4th, the present invention is island component using polypropylene, and comparison is at low cost using superfine fibre prepared by nylon 6 or PET.
5th, existing island blend spinning equipment can be used to be produced for the present invention, and can be superfine fibre industry value chain
Offer scheme.
6th, the sea of the present invention, island component material can be used to carry out the spinning of corresponding figured islands-in-sea fiber.
Specific embodiment
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is simply used
It is further detailed in the present invention, it is impossible to be interpreted as limiting the scope of the invention, which is skilled in technique
Personnel can make some nonessential modifications and adaptations according to the content of the invention described above, still fall within the protection model of the present invention
It encloses.
Embodiment one：
By polyether-type of the melting temperature for 165-167 DEG C of polypropylene and containing potential hydrophilic groups, acid and alkali-resistance hydrolysis-type, melt
Melt the controllable polyurethane of water solubility that temperature is 145-147 DEG C with 50：50 weight ratio tentatively mixes, and is then fed into single screw rod and squeezes
Go out machine to exist（40、100、120、180、200、230、230）It is further blended, melts at a temperature of DEG C ± 3 DEG C, through 230 DEG C after
± 3 DEG C of metering be pumped into the hole count of spinneret for the filament spinning component in 42000 holes carry out spinning, drawing-off, curling, dry damping,
It is unfigured islands-in-sea fiber of the extra large, polypropylene as island that severing, which is made using water-soluble controllable polyurethane,；In 230 DEG C of spinning temperature
Under conditions of the melt viscosity ratio of polypropylene and water-soluble controllable polyurethane be 4.6:1；
Water-soluble controllable polyurethane is sea, the unfigured islands-in-sea fiber that polypropylene is island is placed in that pH value is 10, temperature is
Decrement, the fibrillation of 30 minutes is carried out in 85 DEG C of water, then the fiber after fibrillation is washed with water to neutrality and obtains polypropylene superfine
Fiber collects decrement water；
The pH value for being reduced water is adjusted to 4 using hydrochloric acid, precipitate and filters out water-soluble controllable polyurethane.
The reduction rate of obtained sea-island fibre is 99.3%, and the rate of recovery for being reduced polyurethane in water is 99.2%.
Embodiment two：
By polyether-type of the melting temperature for 169-170 DEG C of polypropylene and containing potential hydrophilic groups, acid and alkali-resistance hydrolysis-type, melt
Melt the controllable polyurethane of water solubility that temperature is 139-140 DEG C with 45：55 weight ratio tentatively mixes, and is then fed into single screw rod and squeezes
Go out machine to exist（40、100、120、180、210、240、240）It is further blended, melts at a temperature of DEG C ± 5 DEG C, through 240 DEG C after
± 5 DEG C of metering is pumped into the hole count of spinneret and carries out spinning, drawing-off, curling, dry damping, sanction for the filament spinning component in 3000 holes
Disconnected be made using water-soluble controllable polyurethane is unfigured islands-in-sea fiber of the extra large, polypropylene as island；In 240 DEG C of spinning temperature
Under the conditions of the melt viscosity ratio of polypropylene and water-soluble controllable polyurethane be 4.2:1；
Water-soluble controllable polyurethane is sea, the unfigured islands-in-sea fiber that polypropylene is island is placed in that pH value is 11, temperature is
Sea-island fibre decrement, the fibrillation of 20 minutes is carried out in 85 DEG C of water, then the fiber after fibrillation is washed with water to neutrality and is gathered
Propylene superfine fibre collects decrement water；
The pH value for being reduced water is adjusted to 2 using sulfuric acid, precipitate and filters out water-soluble controllable polyurethane.
The reduction rate of obtained sea-island fibre is 99.3%, and the rate of recovery for being reduced polyurethane in water is 99.5%.
Embodiment three：
By polypropylene that melting temperature is 170-171 DEG C with containing the polyether-type of potential hydrophilic groups, acid and alkali-resistance hydrolysis-type,
The water-soluble controllable polyurethane that melting temperature is 145-146 DEG C is with 55：45 weight ratio tentatively mixes, and is then fed into single screw rod
Extruder exists（40、100、120、180、200、220、220）It is further blended, melts at a temperature of DEG C ± 5 DEG C, through 225 after
DEG C ± 5 DEG C of metering is pumped into the hole count of spinneret and carries out spinning, drawing-off for the filament spinning component in 40000 holes, curling, dry adjusts
It is unfigured islands-in-sea fiber of the extra large, polypropylene as island that wet, severing, which is made using water-soluble controllable polyurethane,；In spinning temperature
The melt viscosity ratio of polypropylene and water-soluble controllable polyurethane is 5.1 under conditions of 220 DEG C:1；
Water-soluble controllable polyurethane is sea, the unfigured islands-in-sea fiber that polypropylene is island be placed in pH value be 10.5, temperature
To carry out sea-island fibre decrement, the fibrillation of 40 minutes in 50 DEG C of water, then the fiber after fibrillation is washed with water to neutrality and is obtained
Polypropylene superfine fiber collects decrement water；
The pH value for being reduced water is adjusted to 2.5 using sulfuric acid, precipitate and filters out water-soluble controllable polyurethane.
The reduction rate of obtained sea-island fibre is 99.0%, and the rate of recovery for being reduced polyurethane in water is 99.2%.
Claims (5)
1. a kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber, it is characterised in that：By by polypropylene and
Water-soluble controllable polyurethane screw rod blending, melting, extruding spinning are made using water-soluble controllable polyurethane and are as sea, polypropylene
The unfigured islands-in-sea fiber on island；Regulate and control sea component polyurethane to be water-soluble, sea component is reduced, polypropylene superfine fiber is made；It will
Polyurethane in decrement water is regulated to not water-soluble, then will to be reduced in water polyurethane precipitation recycling, and preparation process is environmental-friendly,
It is prepared especially by following steps：
A. by polypropylene and water-soluble controllable polyurethane with（45-60）：（55-40）Weight ratio tentatively mix, be then fed into
Single screw extrusion machine is further blended, melts, and being sent into filament spinning component through metering pump after carries out spinning, drawing-off, curling, dry tune
It is unfigured islands-in-sea fiber of the extra large, polypropylene as island that wet, severing, which is made using water-soluble controllable polyurethane,；Wherein, it is water-soluble
Controllable polyurethane is：Contain the polyurethane elastomer of potential hydrophilic groups in molecule, do not dissolved in spinning process
Water and pH value are not soluble in water under conditions of being 2-5, are dissolved in water under conditions of pH value is 9-11；Screw extruder temperature is：
（40、100、120、180、200、230、230）DEG C ± 25 DEG C, metering pump and filament spinning component temperature are：It 230 DEG C ± 25 DEG C, is spinning
The melt viscosity ratio of polypropylene and water-soluble controllable polyurethane is at a temperature of silk（3-9）:1；
B. water-soluble controllable polyurethane is sea, the unfigured islands-in-sea fiber that polypropylene is island be placed in pH value be 9-11, temperature
Spend in the water for 40-90 DEG C carry out 20-40 minutes sea-island fibre decrement, fibrillation, then by the fiber after fibrillation be washed with water to
Neutrality obtains polypropylene superfine fiber, collects decrement water；
C. the pH value for being reduced water is adjusted to 2-5, precipitates and filters out water-soluble controllable polyurethane.
2. a kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber as described in claim 1, feature exist
In：The polyacrylic melting temperature is 165-175 DEG C, and the melting temperature of water-soluble controllable polyurethane is 135-165 DEG C.
3. a kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber as described in claim 1, feature exist
In：The controllable polyurethane of the water solubility is polyether-type, acid and alkali-resistance hydrolysis-type polyurethane elastomer.
4. a kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber as described in claim 1, feature exist
In：The hole count of the filament spinning component spinneret is 2000-50000 holes.
5. a kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber as described in claim 1, feature exist
In：It is that pH value is adjusted using a kind in hydrochloric acid and sulfuric acid or its combination that the pH value of the decrement water, which is adjusted to 2-5,.
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| CN201711415323.7A CN108048922A (en) | 2017-12-25 | 2017-12-25 | A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber |
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| CN201711415323.7A CN108048922A (en) | 2017-12-25 | 2017-12-25 | A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| CN102517920A (en) * | 2011-12-23 | 2012-06-27 | 青岛新宇田化工有限公司 | Manufacturing method for non-figured island-in-sea superfine fiber artificial leather |
| CN102719934A (en) * | 2012-06-21 | 2012-10-10 | 浙江理工大学 | Method for preparing superfine dyeable polypropylene fiber by sea-island composite spinning method |
| CN102797071A (en) * | 2011-05-24 | 2012-11-28 | 顾海云 | Orange petal-shaped composite filaments and manufacturing method thereof |
| CN103410009A (en) * | 2013-04-19 | 2013-11-27 | 晋江市闽高纺织科技有限公司 | High-breathability superfine fiber polyurethane suede synthetic leather, preparation technology and products prepared from synthetic leather |
| CN105297161A (en) * | 2015-09-22 | 2016-02-03 | 四川大学 | Sea-island fiber with water soluble polyurethane elastomer as sea and reducing method for same in warm condition |
-
2017
- 2017-12-25 CN CN201711415323.7A patent/CN108048922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| CN102797071A (en) * | 2011-05-24 | 2012-11-28 | 顾海云 | Orange petal-shaped composite filaments and manufacturing method thereof |
| CN102517920A (en) * | 2011-12-23 | 2012-06-27 | 青岛新宇田化工有限公司 | Manufacturing method for non-figured island-in-sea superfine fiber artificial leather |
| CN102719934A (en) * | 2012-06-21 | 2012-10-10 | 浙江理工大学 | Method for preparing superfine dyeable polypropylene fiber by sea-island composite spinning method |
| CN103410009A (en) * | 2013-04-19 | 2013-11-27 | 晋江市闽高纺织科技有限公司 | High-breathability superfine fiber polyurethane suede synthetic leather, preparation technology and products prepared from synthetic leather |
| CN105297161A (en) * | 2015-09-22 | 2016-02-03 | 四川大学 | Sea-island fiber with water soluble polyurethane elastomer as sea and reducing method for same in warm condition |
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Application publication date: 20180518 |
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