CN103882539A - Gray elastic fiber and preparing method thereof - Google Patents
Gray elastic fiber and preparing method thereof Download PDFInfo
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Abstract
The invention provides a gray elastic fiber and a preparing method thereof. The gray elastic fiber is a complex fiber with two parallel components. In the cross section of the fiber, the shapes of the two parallel components are in a similar L shape, the two similar L shapes are connected through an outer connection, and the cross section of the gray elastic fiber is in a similar cross shape. The gray elastic fiber is obtained by spinning black PET slices and ordinary PET slices, and due to the fact that the two fibers are different in color, compared with an ordinary elastic fiber, the gray elastic fiber has a very good color effect, and the spun fiber is directly gray. The gray elastic fiber is a three-dimensional elastic fiber, and therefore compared with the ordinary fiber, the gray elastic fiber has a better visual effect and has the effect of changing colors layer by layer.
Description
Technical field
The present invention relates to polyester fiber field, be specifically related to a kind of grey elastomer and preparation method thereof.
Background technology
Elastomer has caused that the whole world pays close attention to widely.The domestic spandex of being called, the percentage elongation of polyurethane elastomeric fiber is very large, brute force, the performance such as ageing-resistant is all better than rubber thread, obtains people's favor.But due to the production equipment and process complexity of polyurethane elastomeric fiber, raw material and processing cost are high, seriously polluted etc., and problem has limited its application.
Parallel composite fiber adopts two kinds of different polymeric materials of shrinkage to produce the fiber of parallel construction, and this is that a class is by structure or two kinds of different condensates of performance, the curling elastomer of making by bi-component composite spinning.The high polymer of two kinds of different qualities, form bi-component compound silk by composite spinning arranged side by side by a certain percentage, because two components that are arranged in parallel in fiber have different shrinkages and initial modulus, when composite fiber spinning drawing-off, two components produce identical elongation, but after being heated, produce different blockage effect because two component shrinkage stresses are different, and two components are pasted together.Therefore, when contraction, phase mutual is coordinated restraining function, shrinks fast component and produces systolic pressure to shrinking slow component; Otherwise, shrink fast component and be subject to shrinking the negative drawing power that slow component produces.After these two kinds of active forces are along with contraction distortion to a certain extent, reach balance, convergent force and the tensile force couple that partners, under this force couple role, whole fiber spontaneously produces torsion, forms the fiber of helix-coil.The fiber of this curling shape is as spring, there is retractility and elasticity in various degree, therefore it is poor that the key that obtains helix-coil is that two components have potential shrinkage stress, and the curling elasticity of the curling elastomer of this bi-component and natural wool is closely similar, gives the elasticity that fiber is good.
But in spinning process, two component high polymers, usually due to viscosity difference, may produce " bent angle " problem and spinning smoothly at spinnerets place in spinning process, or the poor two component crackings that cause of compatibility.Two component cross sectional shapes of most parallel composite fibers are all symmetrical on the market now, yet there are no the appearance of the parallel composite fiber of dissymmetrical structure.
Along with the development of production technology, meet people for the requirement of elasticity clothes in, how to reduce and produce old, enhance productivity, thereby and increase the diversity of fiber and realize various functional fibres and become the problem of most critical.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of grey elastomer, than existing elastomer, the fiber cross section of elastomer provided by the invention is made up of two identical classes " L " shape, and having obtained a kind of shape of cross section is the parallel composite fiber of class " ten " font.
The present invention also provides the preparation method who prepares this elastomer.
To achieve these goals, the present invention is by the following technical solutions:
A kind of grey elastomer, described grey elastomer is two component parallel composite fibres, and in the cross section of fiber, the shape of two components arranged side by side is class " L " shape, described two classes " L " shape is connected by external, and the cross section of described grey elastomer is rendered as class " ten " font.
Further, described two components arranged side by side are made by black PET section and common PET slice spinning.
Further, the inherent viscosity of described black PET section and common PET section is respectively 0.73-0.76dl/g and 0.69-0.72dl/g.
Further, described external being connected refers to tangent connection, and described external connected link position is the flex point of two classes " L " shape.
Further, described two classes " L " shape is replaceable is two classes " V " shapes.
The present invention also provides a kind of preparation method of described grey elastomer, and the spinning technique of employing is: first by black PET section and common PET section vacuumize 8h at 100 ℃ respectively; Then dried two kinds of sections are sent into respectively to melt extruded in double screw extruder, the melt of two components is respectively with two cover measuring pumps, enter composite spining module through melt pipe and sprayed by spinnerets, after quenching, through drawing-off, heat treatment and coiling, finally obtain parallel composite fiber; Wherein,
The spinning temperature of black PET is 286～289 ℃, and the spinning temperature of common PET is 290～296 ℃, and spinning speed is 2850～3100m/min; The first heat roller temperature is 95～100 ℃, and rotating speed is 1630～1730m/min, and the second heat roller temperature is 115～130 ℃, and rotating speed is 3150～3650m/min; Described winding speed is 3050～3500m/min, and described heat treatment refers to that, with 95～100 ℃ of boiling water treating 15～20min, the blowing direction of quenching is the class to a side " L " shape hole just, 21～25 ℃ of wind-warm syndrome, wind speed 0.4～0-55m/s.
Further, the shape of cross section of the spinneret orifice of described spinnerets is the duplex structure arranged side by side of two classes " L " shape hole composition.
Further, it is mutually circumscribed that described duplex structure arranged side by side refers to two classes " L " shape hole.
Further, the head radius in described class " L " shape hole is 0.05～0.06mm, the width in described class " L " shape hole is 0.06 ± 0.002mm, and described class " L " shape length is on one side 0.25 ± 0.005mm, and the radian of described class " L " shape corner is 60 °～90 °.
Further, class " L " the shape spinneret orifice on described spinnerets radially distributes on described spinnerets centered by the spinnerets center of circle.
Grey elastomer provided by the invention is to be obtained by black PET section and common PET slice spinning, the grey elastomer obtaining with the slice spinning of two kinds of different colours directly has the color effects of grey, and because this fiber is two component parallel composite fibres, it itself is the 3 D stereo elastomer with three dimensional coil crimp structure, make the color effects of grey also be better than general fibre, there is better visual perception.Therefore the grey elastomer that the present invention obtains has enriched the kind of elastic fabric, makes this kind of fabric have good grey color effects.In addition, because grey elastomer provided by the invention possesses class " ten " word shape, formed core sucting action, the groove of fiber surface in addition, thus greatly improve the moisture absorption sweat discharging functions of elastomer.
Accompanying drawing explanation
Fig. 1 is a kind of schematic cross-section of grey elastomer of the present invention;
Fig. 2 is the another kind of schematic cross-section of grey elastomer of the present invention;
Fig. 3 is that the spinneret orifice of preparing the spinnerets of the grey elastomer shown in Fig. 1 is arranged schematic diagram;
Fig. 4 is that the spinneret orifice of preparing the spinnerets of the grey elastomer shown in Fig. 2 is arranged schematic diagram.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As depicted in figs. 1 and 2, grey elastomer provided by the invention is two component parallel composite fibres, in the cross section of fiber, the shape of two components arranged side by side is class " L " shape, two classes " L " shape is connected by external, external being connected refers to tangent connection, and external connected link position is the flex point of two classes " L " shape, and the cross section of this grey elastomer is rendered as class " ten " font.In a preferred embodiment, two components of this grey elastomer are prepared by black PET section and common PET slice spinning, now the color effects of this elastomer grey is best, and when the inherent viscosity that black PET section and common PET are cut into slices is respectively 0.73-0.76dl/g and 0.69-0.72dl/g, this elastomer can obtain best crimp property and elasticity after by heat treatment.
In a preferred embodiment, two classes " L " shape is replaceable is two classes " V " shapes, and class " V " shape is theoretic profile trace, and the fiber that actual production goes out may not be very regular geometry.
As shown in Figure 3 and Figure 4, the present invention also provides the spinnerets of preparing this grey elastomer, the shape of cross section of the spinneret orifice of this spinnerets is the duplex structure arranged side by side of two classes " L " shape hole composition, and it is mutually circumscribed that this duplex structure arranged side by side refers to two classes " L " shape hole.The head radius in class " L " shape hole is 0.05～0.06mm, and the width in class " L " shape hole is 0.06 ± 0.002mm, and class " L " shape length is on one side 0.25 ± 0.005mm, and the radian of class " L " shape corner is 60 °～90 °.In addition, the class on spinnerets " L " shape spinneret orifice can radially distribute on spinnerets centered by the spinnerets center of circle.
Example one
To prepare composite black PET/ common PET parallel composite fiber arranged side by side as example.
Raw material and specific targets thereof:
Black PET section: inherent viscosity 0.73dl/g, 263 ℃ of fusing points
Common PET section: inherent viscosity 0.69dl/g, 260 ℃ of fusing points
Spinning process condition:
The common PET section vacuumize 8h at 100 ℃ respectively that the black PET that is 0.73dl/g by inherent viscosity section and inherent viscosity are 0.69dl/g, again two kinds of sections are after drying sent into respectively to melt extruded in double screw extruder, the melt of two components is respectively with two cover measuring pumps, entering composite spining module through melt pipe is sprayed by spinnerets, after quenching, through drawing-off, heat treatment and coiling, finally obtain parallel composite fiber as shown in Figure 1.Wherein, adopt the spinnerets of the spinneret orifice with arrangement mode as shown in Figure 3, the spinneret orifice of this spinnerets is two identical classes " L " shape composition, and the head radius in class " L " shape hole is 0.05mm; The width of class " L " shape is 0.058mm; Class " L " shape length is on one side 0.245mm; The radian of class " L " shape corner is 90 °.The spinning temperature of black PET is 286 ℃, and the spinning temperature of common PET is 290 ℃, and spinning speed is 2850m/min; The first heat roller temperature is 95 ℃, and rotating speed is 1630m/min, and the second heat roller temperature is 115 ℃, and rotating speed is 3150m/min; Winding speed is 3050m/min, and heat treatment refers to that, with 95 ℃ of boiling water treating 15min, the blowing direction of quenching is the class to a side " L " shape hole just, 21 ℃ of wind-warm syndrome, wind speed 0.4m/s.
Product performance index:
Fracture strength: 3.2cN/dtex;
Elongation at break: 13.0%;
Fiber number: 2.04dtex
The crimpness of fiber: 41%
Example two
To prepare composite black PET/ common PET parallel composite fiber arranged side by side as example.
Raw material and specific targets thereof:
Black PET section: inherent viscosity 0.76dl/g, 269 ℃ of fusing points
Common PET section: inherent viscosity 0.72dl/g, 265 ℃ of fusing points
Spinning process condition:
The common PET section vacuumize 8h at 100 ℃ respectively that the black PET that is 0.76dl/g by inherent viscosity section and inherent viscosity are 0.72dl/g, again two kinds of sections are after drying sent into respectively to melt extruded in double screw extruder, the melt of two components is respectively with two cover measuring pumps, enter composite spinning establishment through melt pipe and have spinnerets ejection, after quenching, through drawing-off, heat treatment and coiling, finally obtain parallel composite fiber as shown in Figure 2.Wherein, adopt the spinnerets of the spinneret orifice with arrangement mode as shown in Figure 4, the spinneret orifice of this spinnerets is two identical classes " L " shape composition, and the head radius in class " L " shape hole is 0.06mm; The width of class " L " shape is 0.062mm; Class " L " shape length is on one side 0.255mm; The radian of class " L " shape corner is 60 °.The spinning temperature of black PET is 289 ℃, and the spinning temperature of common PET is 296 ℃, and spinning speed is 3100m/min; The first heat roller temperature is 100 ℃, and rotating speed is 1730m/min, and the second heat roller temperature is 130 ℃, and rotating speed is 3650m/min; Winding speed is 3500m/min, and heat treatment refers to that, with 100 ℃ of boiling water treating 20min, the blowing direction of quenching is the class to a side " L " hole just, 25 ℃ of wind-warm syndrome, wind speed 0.55m/s.
Product performance index:
Fracture strength: 3.5cN/dteX;
Elongation at break: 8.2%;
Fiber number: 3.1dtex;
The crimpness of fiber: 49%.
Grey elastomer provided by the invention is obtained by black PET section and common PET slice spinning, due to the color distortion of two kinds of fibers, makes it have good color effects than general elastomer, and spun fiber is directly grey.And it is 3 D stereo elastomer, compare general fiber and there is better visual effect, there is gradually layer color changeable effect.According to different product demands, spinnerets and raw material can change accordingly, and the elastic characteristic of fiber and color characteristics also just change thereupon.The present invention has realized the spinnability of the parallel composite fiber of the polyester slice of two component different colours, and can realize large-scale production, and the homogeneous raw material that can be widely used in various different viscosities carries out spinning, has reduced production cost.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a grey elastomer, it is characterized in that, described grey elastomer is two component parallel composite fibres, in the cross section of fiber, the shape of two components arranged side by side is class " L " shape, described two classes " L " shape is connected by external, and the cross section of described grey elastomer is rendered as class " ten " font.
2. grey elastomer according to claim 1, is characterized in that, described two components arranged side by side are made by black PET section and common PET slice spinning.
3. grey elastomer according to claim 2, is characterized in that, the inherent viscosity of described black PET section and common PET section is respectively 0.73-0.76dl/g and 0.69-0.72dl/g.
4. grey elastomer according to claim 1, is characterized in that, described external being connected refers to tangent connection, and described external connected link position is the flex point of two classes " L " shape.
5. according to the grey elastomer described in claim 1-4 any one, it is characterized in that, described two classes " L " shape is replaceable is two classes " V " shapes.
6. according to a preparation method for the grey elastomer described in claim 1-4 any one, it is characterized in that, the spinning technique of employing is: first by black PET section and common PET section vacuumize 8h at 100 ℃ respectively; Then dried two kinds of sections are sent into respectively to melt extruded in double screw extruder, the melt of two components is respectively with two cover measuring pumps, enter composite spining module through melt pipe and sprayed by spinnerets, after quenching, through drawing-off, heat treatment and coiling, finally obtain parallel composite fiber; Wherein,
The spinning temperature of black PET is 286～289 ℃, and the spinning temperature of common PET is 290～296 ℃, and spinning speed is 2850～3100m/min; The first heat roller temperature is 95～100 ℃, and rotating speed is 1630～1730m/min, and the second heat roller temperature is 115～130 ℃, and rotating speed is 3150～3650m/min; Described winding speed is 3050～3500m/min, and described heat treatment refers to that, with 95～100 ℃ of boiling water treating 15～20min, the blowing direction of quenching is the class to a side " L " shape hole just, 21～25 ℃ of wind-warm syndrome, wind speed 0.4～0-55m/s.
7. the preparation method of grey elastomer according to claim 6, is characterized in that, the shape of cross section of the spinneret orifice of described spinnerets is the duplex structure arranged side by side of two classes " L " shape hole composition.
8. the preparation method of grey elastomer according to claim 7, is characterized in that, it is mutually circumscribed that described duplex structure arranged side by side refers to two classes " L " shape hole.
9. according to the preparation method of the grey elastomer described in claim 7 or 8, it is characterized in that, the head radius in described class " L " shape hole is 0.05～0.06mm, the width in described class " L " shape hole is 0.06 ± 0.002mm, described class " L " shape length is on one side 0.25 ± 0.005mm, and the radian of described class " L " shape corner is 60 °～90 °.
10. the preparation method of grey elastomer according to claim 9, is characterized in that, class " L " the shape spinneret orifice on described spinnerets radially distributes on described spinnerets centered by the spinnerets center of circle.
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| CN201410117372.2A CN103882539B (en) | 2013-12-04 | 2014-03-26 | Gray elastic fiber and preparing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105155008A (en) * | 2015-09-14 | 2015-12-16 | 江苏乘鹰新材料股份有限公司 | Preparation method and special spinneret plate of stereo color elastic fiber |
| CN105177740A (en) * | 2015-08-10 | 2015-12-23 | 东华大学 | A two-component abnormity hollow high moisture absorption curling composite fiber and a preparation method thereof |
| CN105862148A (en) * | 2016-05-25 | 2016-08-17 | 浙江古纤道股份有限公司 | Processing technology of veneer multi-difference polyester fiber |
| CN105926059A (en) * | 2016-05-25 | 2016-09-07 | 浙江古纤道股份有限公司 | Processing technology adopting single plate for multi-differential polyester DTY (draw texturing yarn) |
| CN108178903A (en) * | 2017-12-27 | 2018-06-19 | 重庆普利特新材料有限公司 | A kind of polyesters composite material of antistatic, automatic colour developing colour change function and preparation method thereof |
| CN115852505A (en) * | 2022-12-21 | 2023-03-28 | 江苏轩达高分子材料有限公司 | Moisture-absorbing and sweat-releasing polyester fiber and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105177740A (en) * | 2015-08-10 | 2015-12-23 | 东华大学 | A two-component abnormity hollow high moisture absorption curling composite fiber and a preparation method thereof |
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| CN105926059A (en) * | 2016-05-25 | 2016-09-07 | 浙江古纤道股份有限公司 | Processing technology adopting single plate for multi-differential polyester DTY (draw texturing yarn) |
| CN108178903A (en) * | 2017-12-27 | 2018-06-19 | 重庆普利特新材料有限公司 | A kind of polyesters composite material of antistatic, automatic colour developing colour change function and preparation method thereof |
| CN115852505A (en) * | 2022-12-21 | 2023-03-28 | 江苏轩达高分子材料有限公司 | Moisture-absorbing and sweat-releasing polyester fiber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203795029U (en) | 2014-08-27 |
| CN103882539B (en) | 2017-02-08 |
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