CN101089261A - Spandex of poly terephthalic acid butanediol ester and production method - Google Patents
Spandex of poly terephthalic acid butanediol ester and production method Download PDFInfo
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- CN101089261A CN101089261A CN 200610088008 CN200610088008A CN101089261A CN 101089261 A CN101089261 A CN 101089261A CN 200610088008 CN200610088008 CN 200610088008 CN 200610088008 A CN200610088008 A CN 200610088008A CN 101089261 A CN101089261 A CN 101089261A
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- pbt
- polybutylene terephthalate
- production method
- dtex
- elastomer
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Abstract
The present invention discloses a kind of elastic polyester fiber and its production method. Said invention adopts PBT chip whose intrinsic viscosity is 0.80-1.20 dl/g as raw material, and its production method includes the following steps: melting, metering by means of pump, extruding, cooling by means of cross air blasting and false-twisting processing so as to obtain the invented elastic polyester fiber.
Description
Technical field:
The present invention relates to a kind of elastic polyester fibre,
Background technology:
The polyester that with PET is representative has favorable mechanical performance and chemical property, and its scope of application also more and more widely.Wherein a kind of is that mechanical performance is good, the composite fibre of two kinds of polyester parallel types combination that heat shrinkability characteristic is good.This fiber through after processing heating can obtain the good back processing yarn of latent crimp performance, but its manufacturing cost is higher.
Along with the development of the diversification of demand, the consumer is more and more higher to the requirement of fabric.PBT (polybutylene terephthalate (PBT) fiber) had both had characteristics such as the weather fastness, crease resistance of terylene; Soft and the anti-wear performance that has polyamide fibre again; Elastic recovery is better than polyamide fibre, and dyeability is better than terylene, but normal temperature boils and dyes.Particularly outstanding is very superior through the PBT fibrous elasticity after the deformation processing, is all to have higher elastic restoration ratio under underload or wet condition.PBT molecular energy after distortion presents reversible relaxing-tense situation with external force simultaneously.The fabric made from the PBT fiber can move with oneself, wears very comfortable and next to the shin.Can match in excellence or beauty with spandex fabric.
Disclose a kind of manufacture method of PBT among the patent CN018102996.4, and the long filament that is made by this method has excellent characteristic.But the manufacture method of this method and common PET long filament is different, and equipment is had specific (special) requirements, needs the heat treatment to the yarn uniform temperature in coiling process.Method provided by the invention adopts common PET long filament production equipment fully, carries out spinning under certain condition, can obtain the PBT elastomer of excellent performance equally, has improved usage ratio of equipment, reduces production costs.
Summary of the invention:
The object of the present invention is to provide a kind of high elasticity, natural resilience is good and the elastomer and the production method of lower-cost polybutylene terephthalate (PBT).
Technical solution of the present invention is:
The elastomer of a kind of polybutylene terephthalate (PBT) (PBT) is characterized in that: this fiber has following performance:
A) fracture strength of 2.50～3.50cN/dtex,
B) 30%～60% the percentage elongation of crispaturaing,
C) 40%～60% flexible return rate,
D) 130 ℃～160 ℃ shrinkage stress peak temperatures,
E) less than 0.8% normal Wu Site.
The production method of the elastomer of a kind of polybutylene terephthalate (PBT) (PBT) is characterized in that: comprise the following steps: successively
(1) precursor preparation
Polybutylene terephthalate (PBT) (PBT) is cut into slices at the drying machine inner drying to moisture 30ppm, send into the screw rod fusion through feed bin, pass through measuring pump, by the filament spinning component extrusion molding, spinning temperature is 250～300 ℃, spinning speed is 2500～3500m/min, and coiling tension is 0.02～0.15cN/dtex.
(2) DTY processing
The precursor that step (1) is made is that 160～210 ℃, speed are that 300～600m/min, extension ratio are to carry out false twisting processing under 1.20～1.50 the condition at first heater temperature, makes elastic polyester fibre.
The inherent viscosity of polybutylene terephthalate (PBT) (PBT) section is 0.80～1.20dl/g in the step (1).
Product elasticity height of the present invention, dyeability and natural resilience are good, have good fracture strength, indexs such as the percentage elongation of crispaturaing, flexible return rate, shrinkage stress peak temperature.
The production technology that the present invention adopts is simple, easy to operate, can make the fiber of gained have better elasticity and recovery.
The invention will be further described below in conjunction with embodiment.
The specific embodiment:
Embodiment:
The employing inherent viscosity is that the polybutylene terephthalate (PBT) (PBT) of 0.80～1.20dl/g is cut into slices at the drying machine inner drying to moisture 30ppm, send into the screw rod fusion through feed bin, pass through measuring pump, by the filament spinning component extrusion molding, spinning temperature is 250～300 ℃ (250 ℃, 280 ℃, 300 ℃ of examples), spinning speed is 2500～3500m/min (2500 meters/minute of an example, 3000 meters/minute, 3500 meter/minute), and coiling tension is 0.02～0.15cN/dtex (routine 0.02cN/dtex, 0.1cN/dtex, 0.15cN/dtex).On field, village-33J machine, carry out false twisting processing then, first heater temperature is that 160～210 ℃ of (160 ℃, 180 ℃, 195 ℃, 210 ℃ of examples), speed are that 300～600m/min (example 300,450,600m/min), extension ratio are to carry out false twisting processing under the condition of 1.20～1.50 (examples 1.2,1.4,1.5), makes elastic polyester fibre.This fiber has the characteristics of superior elasticity and natural rebound degree, has following performance:
A) fracture strength of 2.50～3.50cN/dtex,
B) 30%～60% the percentage elongation of crispaturaing,
C) 40%～60% flexible return rate,
D) 130 ℃～160 ℃ shrinkage stress peak temperatures,
E) less than 0.8% normal Wu Site.
Claims (3)
1, a kind of elastomer of polybutylene terephthalate (PBT) is characterized in that: this fiber has following performance:
A) fracture strength of 2.50～3.50cN/dtex,
B) 30%～60% the percentage elongation of crispaturaing,
C) 40%～60% flexible return rate,
D) 130 ℃～160 ℃ shrinkage stress peak temperatures,
E) less than 0.8% normal Wu Site.
2, the production method of the elastomer of the described polybutylene terephthalate (PBT) of a kind of claim 1 is characterized in that: comprise the following steps: successively
(1) precursor preparation
The polybutylene terephthalate (PBT) section to moisture 30ppm, is sent into screw rod fusion through feed bin at the drying machine inner drying, passes through measuring pump, by the filament spinning component extrusion molding, spinning temperature is 250～300 ℃, and spinning speed is 2500～3500m/min, and coiling tension is 0.02～0.15cN/dtex;
(2) DTY processing
The precursor that step (1) is made is that 160～210 ℃, speed are that 300～600m/min, extension ratio are to carry out false twisting processing under 1.20～1.50 the condition at first heater temperature, makes elastic polyester fibre.
3, polyester fiber according to claim 2 is characterized in that: the inherent viscosity of polybutylene terephthalate (PBT) section is 0.80～1.20dl/g in the step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610088008 CN101089261A (en) | 2006-06-15 | 2006-06-15 | Spandex of poly terephthalic acid butanediol ester and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610088008 CN101089261A (en) | 2006-06-15 | 2006-06-15 | Spandex of poly terephthalic acid butanediol ester and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101089261A true CN101089261A (en) | 2007-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610088008 Pending CN101089261A (en) | 2006-06-15 | 2006-06-15 | Spandex of poly terephthalic acid butanediol ester and production method |
Country Status (1)
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| CN (1) | CN101089261A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748547A (en) * | 2008-12-17 | 2010-06-23 | 东丽纤维研究所（中国）有限公司 | Knitting machine imitated fabric and production method thereof |
| CN102560774A (en) * | 2010-12-16 | 2012-07-11 | 东丽纤维研究所（中国）有限公司 | False twisted fibers and production method thereof |
| CN105401249A (en) * | 2015-11-24 | 2016-03-16 | 马海燕 | Larger-diameter PBT (polybutylene terephthalate) monofilaments and production method thereof |
-
2006
- 2006-06-15 CN CN 200610088008 patent/CN101089261A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748547A (en) * | 2008-12-17 | 2010-06-23 | 东丽纤维研究所（中国）有限公司 | Knitting machine imitated fabric and production method thereof |
| CN101748547B (en) * | 2008-12-17 | 2012-12-26 | 东丽纤维研究所（中国）有限公司 | Knitting machine imitated fabric and production method thereof |
| CN102560774A (en) * | 2010-12-16 | 2012-07-11 | 东丽纤维研究所（中国）有限公司 | False twisted fibers and production method thereof |
| CN102560774B (en) * | 2010-12-16 | 2016-01-13 | 东丽纤维研究所（中国）有限公司 | A kind of false-twisted fiber and manufacture method thereof |
| CN105401249A (en) * | 2015-11-24 | 2016-03-16 | 马海燕 | Larger-diameter PBT (polybutylene terephthalate) monofilaments and production method thereof |
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