CN103132174A - Normal temperature and pressure disperse dyeable modified polyester fiber - Google Patents
Normal temperature and pressure disperse dyeable modified polyester fiber Download PDFInfo
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- CN103132174A CN103132174A CN2011103855794A CN201110385579A CN103132174A CN 103132174 A CN103132174 A CN 103132174A CN 2011103855794 A CN2011103855794 A CN 2011103855794A CN 201110385579 A CN201110385579 A CN 201110385579A CN 103132174 A CN103132174 A CN 103132174A
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Abstract
The invention discloses a normal temperature and pressure disperse dyeable modified polyester fiber which contains an aliphatic series dihydric alcohol constitutional unit, a polyethylene glycol constitutional unit and a hindered phenol antioxydent, wherein the aliphatic series dihydric alcohol constitutional unit accounts for 5 mol%-10 mol% of the total dihydric alcohol constitutional unit and is provide with a side chain, and the carbon number of the dihydric alcohol constitutional unit is smaller than six, the polyethylene glycol constitutional unit accounts for 1 wt%-5 wt% of the polyester fiber, and the hindered phenol antioxydent accounts for 0.01 wt%-0.50 wt% of the polyester fiber. The polyester fiber has the advantages of not only being capable of dying in a disperse mode under a normal temperature and pressure, but also having higher heat resistance and an anti-yellowing performance, and capable of saving the dyeing cost and better being mixed and blended with natural fibers such as cotton, wool and silk and with fibers such as nylon which is suitable for dyeing with a low temperature at the same time.
Description
Technical field
The present invention relates to a kind of normal temperature and pressure and disperse dyeable modified polyester fiber.
Background technology
The advantages such as polyester fiber has that physical and mechanical properties is good, elastic modelling quantity is high, heat resistance good, quick-drying washable, wrinkle resistance strong and cost is lower have in synthetic fiber widely and use.
But because the strand of conventional polyester is arranged tightr, cause the degree of crystallinity of polyester fiber and the degree of orientation is higher, polarity is less, lack hydrophily, there is no suitably to hold the gap of dye molecule between the tortuous long-chain molecule of polyester fiber, therefore dye particles is difficult for penetrating fiber, its dyeability is poor, can use the kind of dyestuff few.This conventional polyester fiber can only adopt the methods such as DISPERSE DYES carrier dyeing, high-temp dyeing or pad-dry-cure dyeing to dye.In order to improve the colouring problem of conventional polyester fiber, the modified poly ester of cationic-dyeable had appearred in recent years both at home and abroad and by polyester fiber or the short fiber of its production, but the dyeing condition of the dyeing condition of this modified polyester fiber and conventional polyester fiber is basic identical, dyeing temperature is 130 ℃ of left and right, and is to dye under higher pressure.The dyeing temperature of the natural fabrics such as picture cotton, hair, fiber crops and thin,tough silk is lower, under the dyeing treatment conditions of high temperature and high pressure, can produce the problem that serious xanthochromia and intensity decline to a great extent, make polyester fiber with the blending such as natural fabric or mixed aspect be very restricted.
Summary of the invention
The object of the present invention is to provide the modified polyester fiber that dyes under a kind of suitable normal temperature and pressure conditions, and this fiber have good oxidation resistent susceptibility and yellowing resistance.
Technical solution of the present invention is:
A kind of normal temperature and pressure disperses dyeable modified polyester fiber, containing what account for total dicarboxylic acid construction unit 5～10mol% in described polyester fiber is aliphatic dihydroxy alcohol construction unit below 6 with side chain and carbon number, account for the polyethylene glycol structures unit of polyester fiber 1～5wt%, account for the Hinered phenols antioxidant of polyester fiber 0.01～0.50wt%.
Above-mentioned is that aliphatic dihydroxy alcohol below 6 is the 2-methyl isophthalic acid with side chain and carbon number, 3 propylene glycol, 2,2-dimethyl-1,3 propylene glycol, 2-methyl isophthalic acid, 4-butanediol, 2,3-dimethyl-BDO, 2-methyl isophthalic acid, 5-pentanediol, 1, the 2-propylene glycol, preferred 2-methyl isophthalic acid, 3 propylene glycol.Be that aliphatic dihydroxy alcohol below 6 can increase the space between polymer segment with side chain and carbon number, make dyestuff easierly to infiltrate through in fiber, realize the performance of normal-temperature normal-pressure dyeable, fiber has higher mechanical property simultaneously.This content that is the aliphatic dihydroxy alcohol below 6 with side chain and carbon number accounts for 5～10mol% of total dicarboxylic acid construction unit in fiber, if its content surpasses 10mol%, the mechanical property of fiber can descend to some extent, the shrinkage character Hui Bianda of while fiber can variation by the DIMENSIONAL STABILITY of the made fabric of this fiber.
For a nearly step is improved dyeability, also contain the polyethylene glycol structures unit of 1～5wt% in polyester fiber of the present invention.The space that the existence of polyethylene glycol structures unit can further increase between strand makes dyestuff more easily disperse, thereby the tightness that has also reduced simultaneously polyester fiber structures reduces dyeing temperature.But excessive polyethylene glycol structures unit can cause the heat resistance of fiber to descend, and affects spinning properties, fracture of wire easily occurs or wafts a phenomenon.
In order to improve the heat resistance of polyester fiber, also contain the Hinered phenols antioxidant that accounts for polyester fiber gross weight 0.01～0.50wt% in polyester fiber of the present invention.The Hinered phenols antioxidant that preferably contains 0.02～0.30wt%.If in polyester fiber, the content of Hinered phenols antioxidant is less than 0.01wt%, the heat resistance of polyester fiber is bad; If in polyester fiber, the content of Hinered phenols antioxidant is greater than 0.50wt%, although the heat resistance of polyester fiber has obtained significantly improving, but xanthochromia easily occurs in the gained polyester fiber, makes the generation variable color of final finished fabric or fades, and affects the use of fabric and attractive in appearance.When the content of Hinered phenols antioxidant in polyester fiber was in 0.01～0.50wt% scope, the resistance to oxidation nitrogen fastness of gained polyester fiber was more than 4 grades.
described Hinered phenols antioxidant can be four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 1, 3, 5-trimethyl-2, 4, 6-three (3, 5-di-t-butyl-4-hydroxyl benzyl) benzene, 2, 2 '-di-2-ethylhexylphosphine oxide-(4-methyl-6-tert-butylphenol), 1, 3, 5-three (3, the 5-di-tert-butyl-4-hydroxyl benzyl) isocyanuric acid, β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid isooctanol ester, two (2, the 4-di-tert-butyl-phenyl) in pentaerythritol diphosphites one or more, preferred four [β-(3 wherein, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.The polyester fiber that uses above-mentioned Hinered phenols antioxidant to obtain has better heat resistance, and in air after 180 ℃ of high-temperature process 60min, the strength retention of fiber is still more than 70%.
Normal temperature and pressure of the present invention disperses the preferred false twist elastic fiber of dyeable modified polyester fiber, comprises that false twisting high-elasticity fiber and false twisting hang down elastic fibre, has soft characteristics by the prepared fabric of false twist elastic fiber.
It is to make by the following method that normal temperature and pressure of the present invention disperses dyeable modified polyester fiber, with Modified polyester chips through super-dry, melt extruded, extrude setting, lateral blowing cooling curing by spinnerets, again through stretching, the nozzle of interlace to oil processing and roller, by the coiler device setting of reeling, get the preorientation polyester fiber at last; The preorientation fiber that obtains is processed to get false-twist textured yarn or low-stretch yarn through false twisting again, and processing conditions is that the first heater temperature is 150 ℃～190 ℃, and the temperature of the second hot case is normal temperature～160 ℃, and extension ratio is 1.5～2.2.
Invention gained polyester fiber has the characteristic that the normal temperature and pressure dispersion can be dyed, can be preferably with natural fabrics such as cotton, hair, silks and be fit to the mixed or blending product of the chemical fibres such as nylon of low temperature dyeing, also can process separately, processing obtains compiling thing or fabric has good Color, and gloss and feel aspect also are improved, braided fabric has good heat resistance and yellowing resistance energy simultaneously, can increase the scope of application of polyester fiber aspect dress material, to obtain the wearing fabric of style varied.
Method of testing:
(1) strength retention:
Fiber is carried out strength test, and measured brute force value is A, then fiber is carried out the high-temperature process of 180 ℃ in air, and the processing time is 60min, and the fiber strength after processing is measured, and measured brute force value is B; Strength retention=(A-B)/A * 100%.
(2) nitrogen oxide complexion fastness:
The test concrete steps are as follows:
1) test portion cloth is chosen the test film of 4cm * 12cm;
2) 1 of standard stained clot-h with test film and 4cm * 5cm keeps the interval of 3cm to be loaded in the test portion fixture of oxidation nitrogen testing machine at least;
3) pour the water of 375ml and 85% H in the shallow bid of special use
3PO
4Solution 6.7mL stirs evenly; Pour again 1% the NaNO of 25ml into
2Solution, after adding solution, fast the lid of equipment is built;
4) fade 3 grades, card when identical when fade degree and standard of standard stained clot-h, take out 1/3 of test portion and put into urea cushioning liquid (urea of 5g and the higher alcohol sulfate of 1g are the solution that lotion is made into 1L) immersion 5min with the standard stained clot-h, dewater with filter paper after taking out the test portion washing, air-dry.
Repeat above step twice.
Evaluation: before and after test film is tested, the variation of color and change are faded and are compared the differentiation grade with gray scale, and before and after the test of staining calico, the variation of color compares the differentiation grade with pollution with gray scale.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated.These embodiment only are not used in for explanation the present invention and limit the scope of the invention.
Embodiment 1
Modified polyester chips is carried out melt spinning, and spinning speed is that 3km/min obtains pre-oriented yarn.Then the pre-oriented yarn that obtains is processed through false twisting, processing conditions: the first heater temperature is 180 ℃, and the temperature of the second hot case is normal temperature, and extension ratio is 1.7, makes high-elastic false twisting modified polyester fiber.
Through nuclear-magnetism test, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, and the content of polyethylene glycol structures unit is 3wt%, antioxidant 1,3,5-trimethyl-2, the content of 4,6-three (3,5-di-t-butyl-4-hydroxyl benzyl) benzene is 0.05wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 70% to this polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 95%, and colorfastness and light fastness are all 4 grades.
Embodiment 2
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 3wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.10wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 75% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 95%, and colorfastness and light fastness are all 4 grades.
Embodiment 3
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 1wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.20wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 85% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 5 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 95%, and colorfastness and light fastness are all 4 grades.
Embodiment 4
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 3wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.20wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 80% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4～5 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 95%, and colorfastness and light fastness are all 4 grades.
Embodiment 5
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 3wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.50wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 80% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 93%, and colorfastness and light fastness are all 4 grades.
Embodiment 6
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 10mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 5wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.50wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 70% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4～5 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 97%, and colorfastness and light fastness are all 4 grades.
Embodiment 7
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 5mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 1wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.01wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 70% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 4～5 grades after braided fabric.
Make fabric DISPERSE DYES with 1owf% under the dyeing condition of 95 ℃ * 30min with the gained fiber and dye, the dye-uptake of dyestuff is 85%, and colorfastness and light fastness are all 3～4 grades.
Comparative example 1
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 3mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 0.5wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.01wt%.This modified polyester fiber does not have normal temperature and pressure to be disperseed to dye characteristic.
Comparative example 2
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 15mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 10wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.70wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 40% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 2～3 grades after braided fabric, does not reach the physical index of dress material purposes fiber.
Comparative example 3
Method with embodiment 1 prepares the high-elastic false twisting polyester fiber of modified poly ester.
Test through nuclear-magnetism, 2-methyl isophthalic acid in the gained modified polyester fiber, 3 propylene glycol unit account for the 7mol% of total dicarboxylic acid construction unit, the content of polyethylene glycol structures unit is 6wt%, the content of antioxidant four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is 0.60wt%.After 180 ℃ of high-temperature process 60min, the strength retention of fiber is 50% to this modified polyester fiber in air, polyester fiber is made its resistance to oxidation nitrogen COLOR FASTNESS is 3 grades after braided fabric, does not reach the physical index of dress material purposes fiber.
Claims (7)
1. a normal temperature and pressure disperses dyeable modified polyester fiber, it is characterized in that: containing what account for total dicarboxylic acid construction unit 5～10mol% in described polyester fiber is aliphatic dihydroxy alcohol construction unit below 6 with side chain and carbon number, account for the polyethylene glycol structures unit of polyester fiber 1～5wt%, account for the Hinered phenols antioxidant of polyester fiber 0.01～0.50wt%.
2. normal temperature and pressure according to claim 1 disperses dyeable modified polyester fiber, and it is characterized in that: in described polyester fiber, the content of Hinered phenols antioxidant is 0.02～0.30wt%.
3. normal temperature and pressure according to claim 1 and 2 disperses dyeable modified polyester fiber, it is characterized in that: described Hinered phenols antioxidant is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 1, 3, 5-trimethyl-2, 4, 6-three (3, 5-di-t-butyl-4-hydroxyl benzyl) benzene, 2, 2 '-di-2-ethylhexylphosphine oxide-(4-methyl-6-tert-butylphenol), 1, 3, 5-three (3, the 5-di-tert-butyl-4-hydroxyl benzyl) isocyanuric acid, β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid isooctanol ester or two (2, the 4-di-tert-butyl-phenyl) in pentaerythritol diphosphites one or more.
4. normal temperature and pressure according to claim 1 and 2 disperses dyeable modified polyester fiber, it is characterized in that: described is that aliphatic dihydroxy alcohol below 6 is the 2-methyl isophthalic acid with side chain and carbon number, ammediol.
5. normal temperature and pressure according to claim 1 and 2 disperses dyeable modified polyester fiber, and it is characterized in that: the resistance to oxidation nitrogen fastness of described polyester fiber is more than 4 grades.
6. normal temperature and pressure according to claim 1 and 2 disperses dyeable modified polyester fiber, it is characterized in that: the strength retention of described polyester fiber after 180 ℃ * 60min processes in air is more than 70%.
7. normal pressure according to claim 1 and 2 disperses dyeable modified polyester fiber, and it is characterized in that: described polyester fiber is the false twist elastic fiber.
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Cited By (5)
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| CN106592039A (en) * | 2016-12-15 | 2017-04-26 | 中国纺织科学研究院 | Modified polyester fibre and regenerated cellulose fibre fabrics, and preparation method of the same |
| CN108330559A (en) * | 2017-01-20 | 2018-07-27 | 东丽纤维研究所（中国）有限公司 | One kind can contaminate polyolefine fiber |
| CN109666986A (en) * | 2018-12-27 | 2019-04-23 | 江苏恒力化纤股份有限公司 | A kind of easy-to-dye polyester FDY fiber and preparation method thereof |
| CN109735933A (en) * | 2018-12-27 | 2019-05-10 | 江苏恒力化纤股份有限公司 | Polyester industrial yarn and preparation method thereof for safety belt |
| CN111234188A (en) * | 2020-02-14 | 2020-06-05 | 东华大学 | High-shrinkage wool-like fiber and preparation method thereof |
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