CN105297161A - Sea-island fiber with water soluble polyurethane elastomer as sea and reducing method for same in warm condition - Google Patents
Sea-island fiber with water soluble polyurethane elastomer as sea and reducing method for same in warm condition Download PDFInfo
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- CN105297161A CN105297161A CN201510604060.9A CN201510604060A CN105297161A CN 105297161 A CN105297161 A CN 105297161A CN 201510604060 A CN201510604060 A CN 201510604060A CN 105297161 A CN105297161 A CN 105297161A
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- polyurethane elastomer
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- 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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Abstract
A sea-island fiber with water soluble polyurethane elastomer as sea and reducing method for same in a warm condition are provided. Sea-island fibers are made from water soluble polyurethane elastomer and island component fusion composite spinning filaments at a certain condition; and water solubility of polyester containing potential hydrophilic groups are utilized to reduce and recover sea components in the warm condition. The sea-island fiber can be widely applied to industries of synthetic leather and textile; compared with the prior art, by the use of the sea-island fiber, and the reducing method, environment pollution and resource waste due to organic emission during sea-island fiber reduction process can be overcome.
Description
Technical field
The present invention relates to fibre in differentiation field, refer to a kind of islands-in-sea type fibre being sea with water soluble polyurethane elastomer especially.
Background technology
Superfine fibre is often referred to fiber number 0.3 dawn (diameter 0.5 micron) fiber below, has cold-proof comfort, water-proof breathable properties, filterability, the features such as soil release performance of deoiling, extensive use is knitting, synthetic leather, the industry such as electronic device processing.Wherein nearly 100,000,000 meters of the output of domestic superfine fiber chemical leather in 2014, occupies an important position in national economy.
The method of processing superfine fiber has multiple, and island method is one very important at present.
Patent ZL200480020657.9, ZL01123513.6, ZL201110047108.2, ZL201019063013.2 use or preferably use polyethylene to be sea, main employing benzene decrement, benzene decrement uses toluene to make solvent to be dissolved by the polyethylene in fiber, remove, although benzene decrement is carried out in relatively airtight environment, but decrement and polyethylene removal process still have a large amount of toluene (85-150g/1kg fiber) volatilization, cause severe contamination and the wasting of resources; Patent ZL200610085552.2, ZL02109799.2, ZL200680036177.0, ZL201010532868.8, ZL201310042086.X use terylene or modified dacron to be sea, main employing Alkali reduction, Alkali reduction is by terylene hydrolysis, removal in alkali lye, after Alkali reduction, terylene hydrolysis becomes terephthalate and ethylene glycol, not easily reclaim and high value added utilization, direct discharge also causes serious environmental pollution and the wasting of resources.The production of current Sea-island Composite Fiber Synthetic Leather all adopts benzene decrement or Alkali reduction mode.Patent ZL03121512.2, ZL201010554602.3, ZL200410013813.0 propose to use PLA or polyvinyl alcohol as sea component, and PLA is as during sea component decrement being PLA hydrolysis, degraded, little to ambient influnence, but causes the wasting of resources; Polyvinyl alcohol easily absorbs water, and contact wetting can be clamminess, and is unfavorable for spinning technique, and the melt temperature of polyvinyl alcohol and decomposition temperature are very close, and therefore polyvinyl alcohol is not be specially adapted to melt spinning.
Therefore, current sea-island composite fiber technology, can exist in decrement process poisonous and hazardous organic emission cause environmental pollution or (with) wasting of resources, be unfavorable for the sustainable development of superfine fibre industry.
Summary of the invention
Main purpose of the present invention is the shortcoming overcoming prior art, provides a kind of islands-in-sea type fibre, its in a mild condition without organic emission decrement method and reclaim the method for sea component in a mild condition.This islands-in-sea type fibre can be widely used in synthetic leather, the industry such as knitting.
The present invention adopts following technical scheme:
By water soluble polyurethane elastomer and island component composite spinning are prepared islands-in-sea type fibre, this islands-in-sea type fibre carries out fiber decrement in alkaline aqueous solution, and the aqueous polyurethane after decrement is adjusted to the recovery that acid condition carries out sea component.
Water soluble polyurethane elastomer is the performed polymer of polyether Glycols and aliphatic or aromatic diisocyanate reaction preparation, the linear polymer formed after hydrophilic chain extender chain extension again, its melt temperature is 170-210 DEG C, its hydrophilic radical is carboxyl or carboxyl, sulfonic group combination, and potential hydrophilic radical before spinning and spinning process be closed.
Water soluble polyurethane elastomer is solubilized in the alkaline aqueous solution of pH10-12.
Composite spinning routinely technique carries out, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, sizing obtain long filament or boundling, drawing-off, curling, sizing, severing obtain staple fibre.
The quantity on islands-in-sea type fibre island is 7-64, and islands-in-sea type fibre sea component and island group weight ratio are (25-60): (75-40), and island component is nylon 6.
The one that the alkali that fiber decrement uses is NaOH and potassium hydroxide or its combination.
It is the recovery that the acid condition of 2.0-4.0 carries out sea component that aqueous polyurethane after decrement is adjusted to pH value, uses the one in hydrochloric acid and sulfuric acid or its combination to adjust pH value.
From the above-mentioned description of this invention, compared with prior art, the present invention has following beneficial effect:
1, the potential hydrophilic radical in water soluble polyurethane elastomer before spinning, spinning process is closed, polyurethane elastomer is not hydrophilic, thus its applicable melt-spinning technology.
2, the hydrophilic radical by adjusting the Acidity of Aikalinity of environment and discharge and in occlusive polyurethane, thus change the water-soluble of sea component polyurethane elastomer, reach the decrement of islands-in-sea type fibre, the recovery of sea component, without organic emission in process, do not cause environmental pollution.
3, fiber decrement process, sea component removal process do not damage the molecular backbone of sea component water soluble polyurethane elastomer, again can utilize, do not cause the wasting of resources after recovery.
4, the present invention is with water soluble polyurethane elastomer for sea, uses existing island composite spinning equipment to produce, can be superfine fibre industry value chain and provide scheme.
Detailed description of the invention
Below by embodiment, the present invention is specifically described; what be necessary to herein means out is that following examples are just for being further detailed the present invention; limiting the scope of the invention can not be interpreted as; the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above, still belongs to protection scope of the present invention.
Embodiment one:
(1) raw material prepares: the carboxylic polyurethane elastomer of extra large component prepared by polyether Glycols and aromatic diisocyanate reaction, and its melt temperature is 210 DEG C; Island component is nylon 6, and the mass ratio of extra large component and island component is 50:50.
(2) spinning: 37 island melt composite spinning techniques are carried out routinely, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, curling, sizing, severing obtains staple fibre.
(3) decrement: sea-island staple fiber is put into the sodium hydrate aqueous solution decrement that pH is 12, the fiber washing after decrement obtains micro staple fiber.
(4) polyurethane reclaims: the aqueous solution sulfuric acid adjust ph after decrement is 3.0-3.5, polyurethane Precipitation, filtered and recycled polyurethane.
Islands-in-sea type fibre fiber number 4.9dtex prepared by this embodiment, intensity 4.3cN/dtex; Islands-in-sea type fibre reduction rate is 99.7%, and the polyurethane rate of recovery is 99.5%.
Embodiment two:
(1) raw material prepares: extra large component prepared by polyether Glycols and aliphatic diisocyanate reaction containing carboxyl, sulfonic polyurethane elastomer, its melt temperature is 170 DEG C; Island component is nylon 6, and the mass ratio of extra large component and island component is 25:75.
(2) spinning: 7 island melt composite spinning techniques are carried out routinely, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, sizing obtain long filament.
(3) decrement: sea island filament is put into the sodium hydrate aqueous solution decrement that pH is 10-10.5, the long filament washing after decrement obtains microfilament.
(4) polyurethane reclaims: the aqueous solution sulfuric acid adjust ph after decrement is 2-2.5, polyurethane Precipitation, filtered and recycled polyurethane.
Sea island filament fiber number 5.1dtex prepared by this embodiment, intensity 3.8cN/dtex; Islands-in-sea type fibre reduction rate is 98.9%, and the polyurethane rate of recovery is 99.3%.
Embodiment three:
(1) raw material prepares: the carboxylic polyurethane elastomer of extra large component prepared by polyether Glycols and aromatic diisocyanate reaction, and its melt temperature is 195 DEG C; Island component is nylon 6, and the mass ratio of extra large component and island component is 60:40.
(2) spinning: 37 island melt composite spinning techniques are carried out routinely, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, curling, sizing, severing obtains staple fibre.
(3) decrement: sea-island staple fiber is put into the potassium hydroxide aqueous solution decrement that pH is 10.5-11, the fiber washing after decrement obtains micro staple fiber.
(4) polyurethane reclaims: the aqueous solution sulfuric acid adjust ph after decrement is 3.5-4, polyurethane Precipitation, filtered and recycled polyurethane.
Islands-in-sea type fibre fiber number 5.5dtex prepared by this embodiment, intensity 4.1cN/dtex; Islands-in-sea type fibre reduction rate is 98.9%, and the polyurethane rate of recovery is 99.6%.
Embodiment four:
(1) raw material prepares: the carboxylic polyurethane elastomer of extra large component prepared by polyether Glycols and aromatic diisocyanate reaction, and its melt temperature is 200 DEG C; Island component is nylon 6, and the mass ratio of extra large component and island component is 40:60.
(2) spinning: 64 island melt composite spinning techniques are carried out routinely, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, curling, sizing, severing obtains staple fibre.
(3) decrement: sea-island staple fiber is put into the sodium hydrate aqueous solution decrement that pH is 11-11.5, the fiber washing after decrement obtains micro staple fiber.
(4) polyurethane reclaims: the aqueous solution sulfuric acid adjust ph after decrement is 3-3.5, polyurethane Precipitation, filtered and recycled polyurethane.
Islands-in-sea type fibre fiber number 4.5dtex prepared by this embodiment, intensity 5.1cN/dtex; Islands-in-sea type fibre reduction rate is 99.2%, and the polyurethane rate of recovery is 99.1%.
Claims (9)
1. one kind with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof, it is characterized in that: by water soluble polyurethane elastomer and island component composite spinning are prepared islands-in-sea type fibre, this islands-in-sea type fibre carries out fiber decrement in alkaline aqueous solution, and the aqueous polyurethane after decrement is adjusted to the recovery that acid condition carries out sea component.
2. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as claimed in claim 1, it is characterized in that: described water soluble polyurethane elastomer is the performed polymer of polyether Glycols and aliphatic or aromatic diisocyanate reaction preparation, the linear polymer formed after hydrophilic chain extender chain extension again, its melt temperature is 170-210 DEG C, its hydrophilic radical is carboxyl or carboxyl, sulfonic group combination, and potential hydrophilic radical before spinning and spinning process be closed.
3. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as claimed in claim 1, it is characterized in that: described water soluble polyurethane elastomer is soluble in the alkaline aqueous solution of pH10-12.
4. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as claimed in claim 1, it is characterized in that: described composite spinning routinely technique carries out, namely respectively hang oneself after sea component and island component drying after screw extruder extruding, melting, metering through filament spinning component spinning, oil after cooling forming, coiling, then boundling, drawing-off, sizing obtain long filament or boundling, drawing-off, curling, sizing, severing obtain staple fibre.
5. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as described in claim 1,4, is characterized in that: the quantity on described islands-in-sea type fibre island is 7-64.
6. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as described in claim 1,4, is characterized in that: described islands-in-sea type fibre sea component and island group weight ratio are (25-60): (75-40).
7. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as described in claim 1,4, is characterized in that: described island component is nylon 6.
8. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as claimed in claim 1, it is characterized in that: the one that the alkali that described fiber decrement uses is NaOH and potassium hydroxide or its combination.
9. a kind of with water soluble polyurethane elastomer be sea islands-in-sea type fibre and decrement method in a mild condition thereof as claimed in claim 1, it is characterized in that: it is the recovery that the acid condition of 2.0-4.0 carries out sea component that the aqueous polyurethane after described decrement is adjusted to pH value, use the one in hydrochloric acid and sulfuric acid or its combination to adjust pH value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604060.9A CN105297161B (en) | 2015-09-22 | 2015-09-22 | It is a kind of using water soluble polyurethane elastomer as the sea-island fibre decrement method in a mild condition in sea |
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| CN201510604060.9A CN105297161B (en) | 2015-09-22 | 2015-09-22 | It is a kind of using water soluble polyurethane elastomer as the sea-island fibre decrement method in a mild condition in sea |
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| CN105297161A true CN105297161A (en) | 2016-02-03 |
| CN105297161B CN105297161B (en) | 2018-06-29 |
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| CN201510604060.9A Active CN105297161B (en) | 2015-09-22 | 2015-09-22 | It is a kind of using water soluble polyurethane elastomer as the sea-island fibre decrement method in a mild condition in sea |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604533A (en) * | 2017-09-19 | 2018-01-19 | 四川大学 | A kind of elastic force superfine fiber chemical leather and its environment-friendly preparation method |
| CN107629187A (en) * | 2017-09-20 | 2018-01-26 | 四川大学 | A kind of insoluble controllable method for preparing polyurethane elastic body of water-soluble water |
| CN108048922A (en) * | 2017-12-25 | 2018-05-18 | 四川大学 | A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber |
| CN111704417A (en) * | 2020-07-21 | 2020-09-25 | 潘辉 | Preparation method of ultrahigh-strength concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273168A (en) * | 2005-09-30 | 2008-09-24 | 可乐丽股份有限公司 | Leather-like sheet and method of manufacturing the same |
| CN101600540A (en) * | 2007-02-01 | 2009-12-09 | 可乐丽股份有限公司 | The manufacture method of polishing pad and polishing pad |
| CN102119069A (en) * | 2008-08-08 | 2011-07-06 | 可乐丽股份有限公司 | Polishing pad and method for manufacturing the polishing pad |
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2015
- 2015-09-22 CN CN201510604060.9A patent/CN105297161B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273168A (en) * | 2005-09-30 | 2008-09-24 | 可乐丽股份有限公司 | Leather-like sheet and method of manufacturing the same |
| CN101600540A (en) * | 2007-02-01 | 2009-12-09 | 可乐丽股份有限公司 | The manufacture method of polishing pad and polishing pad |
| CN102119069A (en) * | 2008-08-08 | 2011-07-06 | 可乐丽股份有限公司 | Polishing pad and method for manufacturing the polishing pad |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604533A (en) * | 2017-09-19 | 2018-01-19 | 四川大学 | A kind of elastic force superfine fiber chemical leather and its environment-friendly preparation method |
| CN107604533B (en) * | 2017-09-19 | 2019-10-18 | 四川大学 | A kind of elastic force superfine fiber chemical leather and its environmental-friendly preparation method |
| CN107629187A (en) * | 2017-09-20 | 2018-01-26 | 四川大学 | A kind of insoluble controllable method for preparing polyurethane elastic body of water-soluble water |
| CN108048922A (en) * | 2017-12-25 | 2018-05-18 | 四川大学 | A kind of environmental-friendly preparation method of not figured type polypropylene superfine fiber |
| CN111704417A (en) * | 2020-07-21 | 2020-09-25 | 潘辉 | Preparation method of ultrahigh-strength concrete |
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| CN105297161B (en) | 2018-06-29 |
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