CN105463597A - Differential linear density blend fiber and preparation method for same - Google Patents
Differential linear density blend fiber and preparation method for same Download PDFInfo
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- CN105463597A CN105463597A CN201410464320.2A CN201410464320A CN105463597A CN 105463597 A CN105463597 A CN 105463597A CN 201410464320 A CN201410464320 A CN 201410464320A CN 105463597 A CN105463597 A CN 105463597A
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Abstract
The invention discloses a differential linear density blend fiber and a preparation method for the same. The blend fiber is a thermoplastic polymer fiber. The cross section area of a small-fineness fiber is 0.1 to 2.0 [mu]m<2>; the cross section area of a large-fineness fiber is 20 to 300 [mu]m<2>; and the number of small-fineness fibers is 5 to 300 times of the number of the large-fineness fibers. The fiber can be prepared by island complex fibers with sea component alkali peeling polyester and island component thermoplastic polyesters in a decrement way. The blend fiber can be manufactured into fabric with softness and excellent dying performance.
Description
Technical field
The present invention relates to the preparation method that a kind of iso-fineness mixes long and slender dimension and this mixed long and slender dimension.
Background technology
The use of synthetic fiber in dress material expands year by year, and the requirement of consumer to fibre improves constantly.In recent years, to the research of high-function fiber and exploitation, in recent years, market there is many mixed long and slender dimensions containing terylene in all positive expansion of fiber industry.As Chinese patent CN1368564 discloses the manufacture method of the different mixed fine polyester filament of a kind of terylene fully drawn yarn one-step method three, the method mainly makes FDY silk in traveller place and HOY or POY tow phase also by changing wire route and transformation drawing roller, obtains three different combined yarns.Chinese patent CN1356411A discloses a kind of method for making of fibres with heterogeneous fineness and cross-section, primarily of the two kind condensates different to alkali rate of dissolution, utilizes their differences of dissolution velocity in aqueous slkali to obtain the fiber of iso-fineness.
Although above-mentioned two pieces publication all achieves the iso-fineness of fiber, but no matter be the melting method of one-step method or adopt common segmentation spinnerets technical method, fiber number and the thickness of gained monofilament are all restricted, and the fabric made exists the shortcoming of flexibility deficiency.
Summary of the invention
A kind of iso-fineness with excellent dyeability and flexibility is the object of the present invention is to provide to mix long and slender dimension.
This mixed long and slender dimension is thermoplastic polymer fibers, and little Denier fiber cross-sectional area is 0.1 ~ 2.0 μm
2, large Denier fiber cross-sectional area is 20 ~ 300 μm
2; Little Denier fiber quantity is 5 ~ 300 times of large Denier fiber quantity simultaneously.
The little Denier fiber cross-sectional area preferably 0.5 ~ 1.5 μm of described mixed long and slender dimension
2, the cross-sectional area of large Denier fiber preferably 30 ~ 200 μm
2.
Described thermoplastic polymer is conventional polyester or its modified poly ester.
The invention also discloses the manufacture method that a kind of iso-fineness mixes long and slender dimension, first with Alkali reduction polyester be sea component, with thermoplastic polymer for island component, by the composite spinning machine melt spinning that spinnerets is distribution type composite spinneret, and drawn processing or the obtained island-in-sea type composite fiber of false twisting processing; In this fiber, the cross-sectional area of island is 0.1 ~ 2.0 μm 2, and the cross-sectional area on large island is 20 ~ 300 μm
2, on single island-in-sea type composite fiber cross section, the quantity on island is 50 ~ 300 islands, and wherein the quantity on large island is 1 ~ 10; Then mixed long and slender dimension is obtained by after obtained island-in-sea type composite fiber Alkali reduction.
On the cross section of described island-in-sea type composite fiber, preferably large island is distributed in the outside of island.
Iso-fineness of the present invention mixes long and slender dimension and there is nano level little Denier fiber and micron-sized large Denier fiber simultaneously, and therefore this mixed long and slender dimension not only has soft feel, also has excellent dyeability.Make the feel of fabric after fabric by it and dyeability also very excellent.
Detailed description of the invention
In order to meet the day by day raising of consumer to fibre quality requirements, the iso-fineness that the invention provides a kind of softness, dyeability and excellent heat resistance mixes long and slender dimension.
This mixed long and slender dimension is thermoplastic polymer fibers, and wherein containing cross-sectional area is 0.1 ~ 2.0 μm
2little Denier fiber and cross-sectional area be 20 ~ 300 μm
2large Denier fiber, simultaneously little Denier fiber quantity is 5 ~ 300 times of large Denier fiber quantity.
For filament cross section transverse shape for circle, cross-sectional area is 0.1 ~ 2.0 μm
2the cross-sectional diameter of little Denier fiber be 356 ~ 1596nm, cross-sectional area is 20 ~ 300 μm
2the cross-sectional diameter of large Denier fiber be 5.05 ~ 19.55 μm.The said little Denier fiber of namely the present invention is the superfine nano fiber reaching Nano grade.Meanwhile, iso-fineness of the present invention mixes 5 ~ 300 times that the quantity of the medium and small Denier fiber of long and slender dimension is large Denier fiber quantity.The quantity of the large Denier fiber of number ratio of little Denier fiber is many can ensure the soft of mixed long and slender dimension, and after making fabric, human body sensory is comfortable.If the cross-sectional area of little Denier fiber is too greatly more than 2.0 μm
2, then mixed long and slender Victor is less than the effect of softness; Cross-sectional area is less than 0.1 μm
2fiber be difficult to realize industrial production due to the restriction of prior art condition.
Although the feel of little Denier fiber is very soft, because it too carefully makes dyeability very poor, even if dyestuff enters fibrous inside, because too thin color can not very dark displaying.Therefore in mixed long and slender dimension of the present invention, also containing cross-sectional area is 20 ~ 300 μm
2large Denier fiber, make the dyeability of mixed long and slender dimension obtain significantly must improving.If the cross-sectional area of large Denier fiber is too little of 20 μm
2, then the filament limit in mixed long and slender dimension is generally less than normal, the dyeability of mixed long and slender dimension or bad; If the cross-sectional area of large Denier fiber is too large higher than 300 μm
2, then can affect the feel of mixed long and slender dimension, there is no soft effect.
Except meeting little Denier fiber cross-sectional area and large Denier fiber cross-sectional area respectively within the scope of above-mentioned restriction except this condition, the quantity of the mixed medium and small Denier fiber of long and slender dimension or 5 ~ 300 times of large Denier fiber quantity.Because if the quantity of little Denier fiber very little, the flexibility of mixed long and slender dimension is poor; If the quantity of little Denier fiber is too many, the dyeability of mixed long and slender dimension can be affected again.
Not limiting filamentary section configuration in the present invention, than circular, can also be pancake, triangle, square, hexagon, trilobal, cross or sexfoil etc.
The raw material of mixed long and slender dimension of the present invention is thermoplastic polymer, and that can enumerate has polyester, polyamide, wherein preferred polyester, comprises conventional polyester and modified poly ester.Described modified poly ester can be high-contraction polyester, cation-modified copolyesters, normal pressure dispersion dyeable copolyester etc.
The invention also discloses the manufacture method that a kind of iso-fineness mixes long and slender dimension, first with Alkali reduction polyester be sea component, with thermoplastic polymer for island component, by the composite spinning machine melt spinning that spinnerets is distribution type composite spinneret, and drawn processing or the obtained island-in-sea type composite fiber of false twisting processing, single fiber at least exists the island of two kinds of different area; Then island-in-sea type composite fiber is carried out alkali decrement treatment removing sea component, namely obtain iso-fineness and mix long and slender dimension.
Common island spinnerets is the assembly of multiple core sheath compound, and due to several quantitative limitations of core sheath complex on spinnerets, in single island-in-sea type composite fiber, the quantity on island is also very restricted.The distribution type island composite spinneret used in the present invention, compared with the spinnerets of common island, can realize in situation of the same area that filamentary island number reaches tens of, hundreds if not thousands of.Described distribution type island composite spinneret mainly comprises metering section, distribution portion and the part that spues, wherein distribution portion is made up of plurality of plates, the thickness of every block plate is about 0.2mm, a large amount of apertures and fine groove is had above plate, polymer flows in set aperture and fine groove, island number can be adjusted change in 10 ~ 10000 scopes by changing the quantity of plate, and freely can control size and the section configuration on island by changing the position in hole and the flow direction of groove and quantity on plate.The present invention utilizes distribution type island composite spinneret arbitrarily can control the feature of the size on island to reach the object of iso-fineness.
In this island-in-sea type composite fiber, the cross-sectional area of island is 0.1 ~ 2.0 μm
2, the cross-sectional area on large island is 20 ~ 300 μm
2, on single island-in-sea type composite fiber cross section, the quantity on island is 50 ~ 300 islands, and wherein the quantity on large island is 1 ~ 10.
On the cross section of described island-in-sea type composite fiber, large island is distributed in the outside of island.
Mix by iso-fineness of the present invention the fabric that long and slender dimension makes and have soft feel, the easy dyeing of fabric after process of carrying out dyeing, the tone after dyeing is also excellent.Simultaneously according to user demand, this fiber can be used alone, and also can carry out blended processing with other fibers such as natural fabrics such as cotton.
Detailed description of the invention
The method of testing that the present invention relates to is as follows:
(1) fiber number
Test according to standard JISL1013:2010.
(2) the island number on filament cross section
Fiber is cut into thin slice (i.e. fiber cross section) along length direction, under ordinary optical microscope, observes the number on island.
(3) cross-sectional area on single island
Island-in-sea type composite fiber is cut into thin slice along fiber cross sections, and it is that suitable multiplying power is taken pictures that the fiber cross-sectional obtained is clapped into enlargement ratio by SS550 type Walkthrough type electron microscope (SEM) then produced by Shimadzu Corporation.Then use image processing software (WINROOF) comparison film to carry out the calculating of island area, final result characterizes with the mean value of 10 island-in-sea type composite fiber sections.
(4) dyeability evaluation
Mixed long and slender dimension is carried out an editorial afterword decrement treatment, and after decrement, the following condition of sample carries out staining evaluation.With the small-sized coloring agent of high-temp dyeing testing machine URMINI-COLOR(infrared ray (TEXAM technical research manufacture) mixing treating liquid, dyeing under the condition of 130 DEG C × 30min.Now the medicament for the treatment of fluid used is as follows:
The manufacture of DianixBlack(large Ai Nikesi company, DISPERSE DYES) 5owf%
(when island component is cationic polyester, cation dyes selected by dyestuff)
The manufacture of NIKKASUNSALT(solar corona chemical company, levelling agent) 1g/L
Acetic acid (pH adjusting agent) 0.5g/L
After dyeing, the medicament preparation treatment fluid below using under the condition of 80 DEG C × 20min, carries out reduction cleaning;
NaOH 0.6g/L
Sodium hydrogensulfite 2g/L
Then, cylinder is compiled thing washing, air-dry after be used as assess sample.Be overlapped into by sample light tight, then carry out tone colour examining with spectral photometric colour measuring meter (Datacolor650 that DatacolorAsiaPacific (H.K.) Ltd. manufactures), chromatic good job L* characterizes.L* refers to the lightness in colour system, and the less expression dyeability of numerical value is better.
(5) flexible appraisal:
20 estimator's hands and finger tip please go to touch clothes contact skin fabric, then inquire the sensation of the soft or hard degree to fabric.Result is as the criterion with the judged result that number is many, and rank is divided into firmly, partially firmly, soft, soft, very soft.
Below in conjunction with embodiment and comparative example, the invention will be further described.
Embodiment 1:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 82.5detx, single fiber dimension 15.After measured, the island area of gained fiber is 0.1 μm
2, island number is 250, and the area on large island is 250 μm
2, large island number is 1, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 15.0, and dyeability is excellent; Flexible appraisal result is soft.
Embodiment 2:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 187.6detx, single fiber dimension 15.After measured, the island area of gained fiber is 0.1 μm
2, island number is 250, and the area on large island is 200 μm
2, large island number is 3, and the cross sectional shape on island and large island is all circular.Large island is arranged in the outside of island simultaneously.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 13.7, and dyeability is excellent; Flexible appraisal result is soft.
Embodiment 3:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 82.5detx, single fiber dimension 15.After measured, the island area of gained fiber is 0.5 μm
2, island number is 250, and the area on large island is 150 μm
2, large island number is 1, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 15.7, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 4:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 105.0detx, single fiber dimension 15.After measured, the island area of gained fiber is 1.0 μm
2, island number is 250, and the area on large island is 50 μm
2, large island number is 2, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 16.3, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 5:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 165.1detx, single fiber dimension 15.After measured, the island area of gained fiber is 2.0 μm
2, island number is 200, and the area on large island is 30 μm
2, large island number is 5, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 17.2, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 6:
With Alkali reduction polyester be sea component, cation dyeable polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 105.0detx, single fiber dimension 15.After measured, the island area of gained fiber is 1.0 μm
2, island number is 250, and the area on large island is 50 μm
2, large island number is 2, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by cation dyes, testing its L* is 15.3, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 7:
With Alkali reduction polyester be sea component, high-contraction polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 105.0detx, single fiber dimension 15.After measured, the island area of gained fiber is 1.0 μm
2, island number is 250, and the area on large island is 50 μm
2, large island number is 2, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 16.1, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 8:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 82.5detx, single fiber dimension 15.After measured, the island area of gained fiber is 0.5 μm
2, the cross sectional shape of island is circular, and island number is 250; The area on large island is 150 μm
2, the cross sectional shape on large island is Y shape, and large island number is 1; Island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 15.2, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 9:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 180.1detx, single fiber dimension 15.After measured, the island area of gained fiber is 2.0 μm
2, island number is 200, and the area on large island is 20 μm
2, large island number is 10, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 18.7, and dyeability is excellent; Flexible appraisal result is very soft.
Embodiment 10:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that distribution type island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 78.0detx, single fiber dimension 15.After measured, the island area of gained fiber is 2.0 μm
2, island number is 50, and the area on large island is 100 μm
2, large island number is 2, and the cross sectional shape on island and large island is all circular, island and large island random arrangement.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 17.7, and dyeability is excellent; Flexible appraisal result is very soft.
Comparative example 1:
With Alkali reduction polyester be sea component, conventional polyester is for island component, island weight ratio is 30/70, on the spinning machine that common island composite spinneret is housed, after melt spinning, false twisting processing, obtain the island-in-sea type composite fiber that fiber number is 133.3detx, single fiber dimension 36.After measured, the island area of gained fiber is 5.0 μm
2, island number is 37, and the cross sectional shape on island is circular.
Made by this fiber with first carrying out decrement processing after fabric, then dyeed by DISPERSE DYES, testing its L* is 29.8, and dyeability is general; Flexible appraisal result is soft.
Claims (6)
1. iso-fineness mixes a long and slender dimension, it is characterized in that: this mixed long and slender dimension is thermoplastic polymer fibers, and little Denier fiber cross-sectional area is 0.1 ~ 2.0 μm
2, large Denier fiber cross-sectional area is 20 ~ 300 μm
2; Little Denier fiber quantity is 5 ~ 300 times of large Denier fiber quantity simultaneously.
2. iso-fineness according to claim 1 mixes long and slender dimension, it is characterized in that: the little Denier fiber cross-sectional area 0.5 ~ 1.5 μm of described mixed long and slender dimension
2.
3. iso-fineness according to claim 1 mixes long and slender dimension, it is characterized in that: the cross-sectional area of the large Denier fiber of described mixed long and slender dimension is 30 ~ 200 μm
2.
4. iso-fineness according to claim 1 mixes long and slender dimension, it is characterized in that: thermoplastic polymer is conventional polyester or its modified poly ester.
5. an iso-fineness according to claim 1 mixes the manufacture method of long and slender dimension, it is characterized in that: first with Alkali reduction polyester be sea component, with thermoplastic polymer for island component, by the composite spinning machine melt spinning that spinnerets is distribution type composite spinneret, and drawn processing or the obtained island-in-sea type composite fiber of false twisting processing; In this fiber, the cross-sectional area of island is 0.1 ~ 2.0 μm
2, the cross-sectional area on large island is 20 ~ 300 μm
2, on single island-in-sea type composite fiber cross section, the quantity on island is 50 ~ 300 islands, and wherein the quantity on large island is 1 ~ 10; Then mixed long and slender dimension is obtained by after obtained island-in-sea type composite fiber Alkali reduction.
6. iso-fineness according to claim 5 mixes the manufacture method of long and slender dimension, it is characterized in that: on the cross section of described island-in-sea type composite fiber, and large island is distributed in the outside of island.
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| CN201410464320.2A CN105463597A (en) | 2014-09-12 | 2014-09-12 | Differential linear density blend fiber and preparation method for same |
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| CN201410464320.2A CN105463597A (en) | 2014-09-12 | 2014-09-12 | Differential linear density blend fiber and preparation method for same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111260717A (en) * | 2020-01-10 | 2020-06-09 | 西南大学 | Cocoon silk fineness direct measuring method without reeling silk and application thereof |
| WO2024188303A1 (en) * | 2023-03-16 | 2024-09-19 | 东丽纤维研究所（中国）有限公司 | Segmented composite fiber |
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| JPH07126951A (en) * | 1993-11-01 | 1995-05-16 | Toray Ind Inc | Woven or knitted fabric from yarn of mixed filaments different in denier and its production |
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| CN111260717A (en) * | 2020-01-10 | 2020-06-09 | 西南大学 | Cocoon silk fineness direct measuring method without reeling silk and application thereof |
| WO2024188303A1 (en) * | 2023-03-16 | 2024-09-19 | 东丽纤维研究所（中国）有限公司 | Segmented composite fiber |
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