CN101718008A - High-performance polyester composite elastic fiber and manufacturing method thereof - Google Patents
High-performance polyester composite elastic fiber and manufacturing method thereof Download PDFInfo
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Abstract
The invention provides a high-performance polyester composite elastic fiber with good dyeability. The composite fiber is prepared from two polyester or copolyester components with viscosity differences through a composite spinning process, wherein the high-viscosity component accounts for 30 to 70 percent by weight, and the low-viscosity component accounts for 70 to 30 percent by weight. The composite fiber has a parallel or eccentric core sheath type structure, and has good curling property, natural resilience and dyeability; meanwhile, the manufacturing process is simple and convenient and easy to operate; the low-temperature dyeing property of the composite fiber has the functions of environmental protection and energy conservation; and the composite fiber of the invention can be widely applied to various woven and knitted elastic fabrics.
Description
Technical field:
The present invention relates to a kind of cationic-dyeable elastic composite fiber and manufacture method thereof that makes through composite spinning by two kinds of polyester or copolyester component.
Background technology:
Two its operation principles of component composite elastic fiber are thermal contraction performance differences of different components in the fiber, make it have permanent main body helical structure, say visually just as telephone wire and coil, has permanent elasticity, the aftertreatment technology of fabric is unaffected simultaneously, and the lining that provides has lot of advantages.Now, no exception along with people are more and more higher to the pursuit of fabric color style to the Color of polyester elastic fabric, and at present to the research of elastomer, most of highly shrinkable energy and dyeability that is difficult to satisfy simultaneously fiber.As everyone knows, cation dyes have advantages such as chromatogram is complete, bright in colour, cheap, dyeing is simple, thereby exploitation cation dyeable polyester elastomer becomes the important solution route of taking into account the two.
The disclosed composite elastic fiber manufacture method of patent CN1280462C, its a kind of component is PET, another kind of component is PET, CO-PET, PTT or PBT, this fibrid is because the existence of PET component, do not possess cation dyeable, and when dyeing two kinds of components have the dyeing temperature difference, the PET component is not painted during low temperature dyeing, PTT or PBT component property are influenced during high-temp dyeing, feel roughening, elasticity variation.Patent CN 1854355A discloses a kind of CDP/PET cationic-dyeable composite elastic fiber, but it still has a kind of component PET not possess cation dyeable, thereby composite fibre has the defective of low dye uptake and aberration, and needs high-temperature and high-pressure conditions dyeing.
The present invention is intended to overcome above-mentioned defective, but makes the energy-saving high-performance polyester composite elastic fiber of a kind of good springiness, feel exquisiteness, CATION dye-uptake height or boiling dyeing at normal pressure, dyeing temperature unanimity.
Summary of the invention:
The purpose of this invention is to provide a kind of high-performance polyester composite elastic fiber, described composite fibre utilizes the viscosity differences of two kinds of components to form three-dimensional coiled structure, flexible resilience excellence; At least contain a kind of cationic-dyeable or the cationic chromophilous component of low temperature in the polyester components simultaneously, the dyed temperature of giving the corresponding unanimity of fiber reaches good stainability.
For the technical solution that satisfies the object of the invention is:
A kind of high-performance polyester composite elastic fiber has cation dyeable, it is characterized in that a kind of polyester components is cation dyeable copolyester (CDP), and its inherent viscosity is 0.58～0.70dL/g, accounts for 30～70% weight portions; Another kind of component is the high viscosity CDP that is made by the solid-phase tack producing method, and its inherent viscosity is 0.80～1.10dL/g, accounts for 70～30% weight portions.
Described cationic-dyeable CDP component is to be the pet copolymer of comonomer with ethylene isophthalate-5-sodium sulfonate, and described composite fibre has parallel type or eccentric core-sheath-type cross section structure.
A kind of high-performance polyester composite elastic fiber has low temperature cation easily metachromia, it is characterized in that a kind of polyester components is a low temperature cation easily dying copolyester (ECDP), and its inherent viscosity is 0.55～0.68dL/g, accounts for 30～70% weight portions; Another kind of component is the high viscosity ECDP that is made by the solid-phase tack producing method, or polytrimethylene terephthalate (PTT), or polybutylene terephthalate (PBT) (PBT), and its inherent viscosity is 0.80～1.20dL/g, accounts for 70～30% weight portions.
The cationic chromophilous ECDP component of described low temperature is to be the pet copolymer of comonomer with ethylene isophthalate-5-sodium sulfonate and polyglycol ether, and described composite fibre has parallel type or eccentric core-sheath-type cross section structure.
Above-mentioned cationic-dyeable, or the cationic chromophilous composite elastic fiber of low temperature make by following technology composite spinning:
Two kinds of polyester slices carry out fusion through two screw rods respectively, by the measuring pump metering, account for 30～70% weight portions with two kinds of melt input spinning manifolds by low viscosity component, extrude through composite spining module; By the composite fibre that spinnerets is extruded, technologies such as the traction of blowing, oil, reel through ring obtain the composite fibre undrawn yarn, spinning speed 800～4000m/min, 280～305 ℃ of spinning temperatures; Undrawn yarn obtains the composite elastic fiber of stainability excellence through drawing-off, false twisting.
The polyester composite elastic fiber of stainability excellence constructed in accordance, cross section structure is parallel type or eccentric core-sheath-type, fibre number 2～20dtex, fracture strength 〉=2.8cN/dtex, curling extensibility 〉=35%, elastic recovery rate 〉=70% that curls, cation stain excellence, evenly, bright-coloured, easy colouring, possess the good crease-resistant conformality of terylene itself simultaneously.
Advantage of the present invention is with positive role: two kinds of components of composite fibre have corresponding consistent dyed temperature, overcome technology, performance, cost problem that the ubiquitous component dyeing temperature of present elastomer difference is brought, made the truly composite elastic fiber of stainability excellence.The high characteristics of easy colouring, lovely luster, COLOR FASTNESS when cationic-dyeable CDP/CDP composite elastic fiber has high-temp dyeing among the present invention, the shortcoming that the PET component is not painted when having solved the cation stain of CDP/PET composite fibre.The cationic chromophilous ECDP/ECDP of low temperature, ECDP/PTT, ECDP/PBT composite fibre among the present invention, owing to all contain a kind of copolyester component of boiling dyeing at normal pressure performance, composite fibre can dye under the condition under normal pressure, has the effect of environmental protection and energy saving; Than PET/PTT, PET/PBT composite fibre, overcome that its two kinds of components exist due to dyeing temperature difference that colouring is not enough, irregular, COLOR FASTNESS difference and PTT, PBT component affected defective of performance when high-temp dyeing.
Description of drawings:
Fig. 1 is the technological process of production figure of polyester composite elastic fiber
Fig. 2 is the cross section structure figure of polyester composite elastic fiber
The specific embodiment:
To help to understand the present invention by following examples, but not limit the scope of the invention.Should be understood that those skilled in the art belong to protection scope of the present invention equally to the various equivalent modifications that the present invention did after the content of having read the present invention's instruction.
Embodiment 1
With inherent viscosity is the CDP component A of 0.58dL/g, with through the CDP B component of solid-phase tack producing to 0.80dL/g, the two weight ratio 30: 70 is carried out composite spinning by the parallel type structure, 280 ℃ of spinning temperatures, fiber is through 150 ℃ of dry heat treatment, obtain the cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 35%, and curling elastic recovery rate is 80%, can dye 130 ℃ of temperature, the results are shown in Table 1.
Embodiment 2
With inherent viscosity is the CDP component A of 0.70dL/g, with through the CDP B component of solid-phase tack producing to 1.05dL/g, the two weight ratio 70: 30 is carried out composite spinning by eccentric core-sheath-type structure, 288 ℃ of spinning temperatures, fiber is through 90 ℃ of humid heat treatment, obtain the cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 42%, and curling elastic recovery rate is 71%, can dye 130 ℃ of temperature, the results are shown in Table 1.
Embodiment 3
With inherent viscosity is the CDP component A of 0.60dL/g, with through the CDP B component of solid-phase tack producing to 1.10dL/g, the two weight ratio 40: 60 is carried out composite spinning by the parallel type structure, 290 ℃ of spinning temperatures, fiber is through 150 ℃ of dry heat treatment, obtain the cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 53%, and curling elastic recovery rate is 79%, can dye 130 ℃ of temperature, the results are shown in Table 1.
Embodiment 4
With inherent viscosity is the ECDP component A of 0.55dL/g, with through the ECDP B component of solid-phase tack producing to 1.02dL/g, the two weight ratio 70: 30 is carried out composite spinning by eccentric core-sheath-type structure, 305 ℃ of spinning temperatures, fiber is through 140 ℃ of dry heat treatment, obtain the low temperature cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 45%, and curling elastic recovery rate is 70%, can dye 98 ℃ of temperature, the results are shown in Table 1.
Embodiment 5
With inherent viscosity is the ECDP component A of 0.68dL/g, with through the ECDP B component of solid-phase tack producing to 1.05dL/g, the two weight ratio 50: 50 is carried out composite spinning by the parallel type structure, 288 ℃ of spinning temperatures, fiber is through 140 ℃ of dry heat treatment, obtain the low temperature cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 44%, and curling elastic recovery rate is 81%, can dye 98 ℃ of temperature, the results are shown in Table 1.
Embodiment 6
With inherent viscosity is the ECDP component A of 0.58dL/g, with through the ECDP B component of solid-phase tack producing to 0.80dL/g, the two weight ratio 30: 70 is carried out composite spinning by the parallel type structure, 280 ℃ of spinning temperatures, fiber is through 88 ℃ of humid heat treatment, obtain the low temperature cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 36%, and curling elastic recovery rate is 78%, can dye 98 ℃ of temperature, the results are shown in Table 1.
Embodiment 7
With inherent viscosity is the ECDP component A of 0.58dL/g, with inherent viscosity be the PBT B component of 1.02dL/g, the two weight ratio 60: 40 is carried out composite spinning by eccentric core-sheath-type structure, 285 ℃ of spinning temperatures, fiber is through 140 ℃ of dry heat treatment, obtain the low temperature cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 43%, and curling elastic recovery rate is 75%, can dye 98 ℃ of temperature, the results are shown in Table 1.
Embodiment 8
With inherent viscosity is the ECDP component A of 0.58dL/g, with inherent viscosity be the PTT B component of 1.20dL/g, the two weight ratio 50: 50 is carried out composite spinning by the parallel type structure, 285 ℃ of spinning temperatures, fiber is through 70 ℃ of humid heat treatment, obtain the low temperature cationic-dyeable composite elastic fiber of excellent performance, curling extensibility is 53%, and curling elastic recovery rate is 85%, can dye 98 ℃ of temperature, the results are shown in Table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | |
| Low viscosity component A | ??CDP | ??CDP | ??CDP | ??ECDP | ??ECDP | ??ECDP | ??ECDP | ??ECDP |
| The high viscosity B component | ??CDP | ??CDP | ??CDP | ??ECDP | ??ECDP | ??ECDP | ??PBT | ??PTT |
| Inherent viscosity A/B (dLg -1) | ??0.58/0.80 | ??0.70/1.05 | ??0.60/1.10 | ??0.55/1.02 | ??0.68/1.05 | ??0.58/0.80 | ??0.58/1.02 | ??0.58/1.20 |
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | |
| Spinning temperature (℃) | ??280 | ??288 | ??290 | ??305 | ??288 | ??280 | ??285 | ??285 |
| Heat treatment temperature/mode | 150 ℃/xeothermic | 90 ℃/damp and hot | 150 ℃/xeothermic | 140 ℃/xeothermic | 140 ℃/xeothermic | 88 ℃/damp and hot | 140 ℃/xeothermic | 70 ℃/damp and hot |
| Cross section structure | Parallel type | Eccentric core-sheath-type | Parallel type | Eccentric core-sheath-type | Parallel type | Parallel type | Eccentric core-sheath-type | Parallel type |
| Curling extensibility (%) | ??35 | ??42 | ??53 | ??45 | ??44 | ??36 | ??43 | ??53 |
| Elastic recovery rate (%) curls | ??80 | ??71 | ??79 | ??70 | ??81 | ??78 | ??75 | ??85 |
| Dyeing temperature (℃) | ??130 | ??130 | ??130 | ??98 | ??98 | ??98 | ??98 | ??98 |
Claims (8)
1. high-performance polyester composite elastic fiber, it is characterized in that making as follows: with two kinds of polyester components with viscosity differences, through the composite spinning technology extruding spinning, make a kind of parallel type or eccentric core-sheath-type composite fibre, this composite fibre forms the shrinkage helical structure after relaxation heat setting is handled.
2. high-performance polyester composite elastic fiber as claimed in claim 1 is characterized in that a kind of polyester components is cation dyeable copolyester (CDP), and its inherent viscosity is 0.58～0.70dL/g; Another kind of component is the high viscosity CDP that is made by the solid-phase tack producing method, and its inherent viscosity is 0.80～1.10dL/g.
3. cation dyeable copolyester as claimed in claim 2 (CDP) is characterized in that with ethylene isophthalate-5-sodium sulfonate be the pet copolymer of comonomer.
4. high-performance polyester composite elastic fiber as claimed in claim 1 is characterized in that a kind of polyester components is a low temperature cation easily dying copolyester (ECDP), and its inherent viscosity is 0.55～0.68dL/g; Another kind of component is the high viscosity ECDP that is made by the solid-phase tack producing method, or polytrimethylene terephthalate (PTT), or polybutylene terephthalate (PBT) (PBT), and its inherent viscosity is 0.80～1.20dL/g.
5. low temperature cation easily dying copolyester as claimed in claim 4 (ECDP) is characterized in that with ethylene isophthalate-5-sodium sulfonate and polyethylene glycol be the pet copolymer of comonomer.
6. high-performance polyester composite elastic fiber as claimed in claim 1, the weight ratio that it is characterized in that low viscosity component and high viscosity component are 30: 70～70: 30 scope.
7. composite spinning technology as claimed in claim 1 is characterized in that technical process is as follows:
(1) two kind of polyester slice carries out fusion through two screw rods respectively, by the measuring pump metering, accounts for 30～70% weight portions with two kinds of melt input spinning manifolds by low viscosity component, extrudes through composite spining module;
(2) composite fibre of extruding by spinnerets, technologies such as the traction of blowing, oil, reel through ring obtain the composite fibre undrawn yarn, spinning speed 800～4000m/min, 280～305 ℃ of spinning temperatures;
(3) undrawn yarn obtains high-performance polyester composite elastic fiber through drawing-off, false twisting.
8. high-performance polyester composite elastic fiber as claimed in claim 1 is characterized in that relaxation heat setting under water-bath more than 70 ℃ or xeothermic condition, produces the elasticity of curling.
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