CN104532622B - A kind of method of polyimide fiber disperse dyeing - Google Patents
A kind of method of polyimide fiber disperse dyeing Download PDFInfo
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- CN104532622B CN104532622B CN201410817952.2A CN201410817952A CN104532622B CN 104532622 B CN104532622 B CN 104532622B CN 201410817952 A CN201410817952 A CN 201410817952A CN 104532622 B CN104532622 B CN 104532622B
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- polyimide fiber
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- bath raio
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Abstract
A kind of method that the present invention relates to polyimide fiber disperse dyeing, including: polyimide fiber is put in the solution that degreaser forms by (1); bath raio 1:70～120; process 50～70 minutes at 50～70 DEG C; put in 2～40g/L alkali liquor after cleaning; bath raio is 1:70～120, processes 5～15 minutes at 70～90 DEG C, then washes drying；(2) under room temperature, the polyimide fiber that step (1) obtains is put in working solution, be warming up to 120～150 DEG C, be incubated 30～60min, then cool to 60 DEG C, washing.Due to the fact that disperse dyes are practically insoluble in water, after entering fiber, be difficult to split away off from fiber, therefore after upper dye, every fastness is excellent；The polyimide fiber dyeed through the method obtains color depth, and dyefastness is high, and the method technique is simple, and processing cost is relatively low, has good industrial application value.
Description
Technical field
The invention belongs to polyimide fiber colouring art, particularly to a kind of method of polyimide fiber disperse dyeing.
Background technology
Polyimides is one of optimal high-molecular organic material of combination property, refers on molecular backbone containing imide ring group
One family macromolecule polymer, imide ring structural formula is as follows:
It is various in style as binary acid anhydride and the diamine of principal monomer, and the polyamides that different combinations is obtained with different performance is sub-
Amine material, thus polyimide material has chemical constitution design flexibly, goes for different demands.Polyimides
In molecular backbone substantial amounts of rigidity acid imide five-membered ring structure determine polyimide fiber all many-sides have excellence performance；
As heat stability is high, long-term Applicable temperature is up to 150～380 DEG C；Radiation resistance is good, and its thin film is by 5 × 109Rad dose delivery
After, intensity still keeps 86%；Excellent in mechanical performance, the hot strength of unfilled plastics is all at more than 100MPa；Have not
Flammability, limited oxygen index is up to 38%.Multipath feature in the combination property of polyimides excellence and synthesis so that it is many
Individual application aspect all demonstrates extremely prominent performance, has extensively in fields such as high temperature filtration, special type protection, function and structural materials
Wealthy application prospect.
But also just because of the performance that the above-mentioned excellence of polyimides is stable so that the dyeing of polyimide fiber is extremely difficult, at present
Remain the focus of tencel Study on dyeing, be also that it is at the bottleneck place that industry is used or commercial market is promoted.Therefore, find
The method of a kind of applicable polyimide fiber dyeing, is beneficial to the application expanding polyimide fiber in every field.
The glass temperature of polyimide fiber generally reaches more than 300 DEG C, and for the high fiber of vitrification point, the most frequently used
Dyestuff is disperse dyes, and its water solublity is little, in dye liquor by be dissolved into molecule with dispersity on contaminate and go on fiber.
Common colouring method is the methods such as pad-dry-cure dyeing method, spinning solution staining, high-temperature and high pressure dyeing process, carrier dyeing process, its
Middle carrier dyeing process and high-temperature and high pressure dyeing process, operability and Color are preferable.High-temperature and high pressure dyeing process, is dyeing temperature
Higher than 100 DEG C, airtight higher than the dyeing installation of an atmospheric pressure in the damp and hot colouring method of one that carries out.Along with dye liquor temperature
The rising of degree, dyestuff dyeing rate greatly accelerates, and dye adsorption amount is also greatly improved, it is possible to obtain level-dyeing property and through-dyeing are the best
Product.And carrier dyeing process is to utilize a kind of to have the compound of affinity to dyestuff and fiber as carrier, fiber is had by it
The effect that plasticising is expanded, can weaken the adhesion of molecule interchain in fiber, increase the probability that hole produces, and dyestuff diffusion rate carries
High.During dyeing, carrier adsorption forms one layer of dense liquid carrier layer at fiber surface, improves dyestuff inside and outside fiber
Concentraton gradient, and then bring dye molecule into fibrous inside.Select a kind of low toxicity, inexpensive, promote the effective carrier of dye to closing
Important, benzyl alcohol can meet requirement.
Summary of the invention
The technical problem to be solved is to provide a kind of method of polyimide fiber disperse dyeing, and it mainly solves
Certainly existing problem chromophobe to polyimide fiber；The polyimide fiber dyeed through the method obtains color depth, and dyefastness is high,
And the method technique is simple, processing cost is relatively low, has good industrial application value.
A kind of method of the polyimide fiber disperse dyeing of the present invention, including:
(1) polyimide fiber is put in the solution of degreaser composition, bath raio 1:70～120, process 50～70 minutes at 50～70 DEG C,
Putting in 2～40g/L alkali liquor after cleaning, bath raio is 1:70～120, processes 5～15 minutes at 70～90 DEG C, then washes drying；
(2) under room temperature, putting in working solution by the polyimide fiber that step (1) obtains, working solution bath raio is 1:70～120, rises
Temperature, to 120～150 DEG C, is incubated 30～60min, then cools to 60 DEG C, washing；Wherein, working solution consists of: with fabric weight
Amount is calculated as 1～sodium nitrate that the disperse dyes of 8%, concentration are 1～8g/L and carrier that concentration is 30～50g/L.
Degreaser in described step (1) is dehydrated alcohol.
Alkali liquor in described step (1) be the one in sodium hydroxide solution, potassium hydroxide solution, ammonia, sodium carbonate liquor or
Several.
Carrier in described step (2) is the one in benzyl alcohol, essence of Niobe, 1-Phenylethanone..
Heating rate in described step (2) and rate of temperature fall are 2 DEG C/min.
The technique of the present invention uses alkali liquor to be roughened fiber surface, the asperity on increased fiber surface, higher at high temperature
The dye effect of taking utilizing carrier under the conditions of platen press carries out disperse dyeing.
The present invention first uses alkali liquor to carry out polyimide fiber being roughened pretreatment, makes polyimide fiber surface etch hydrolyze, high
Acid imide five-ring heterocycles on strand splits, and generates polyamic acid salt structure, the asperity on increased fiber surface, contact
Area and hydrophilic ability.Using high-temperature and high pressure dyeing process to combine carrier dyeing process again, the benzyl alcohol using low toxicity inexpensive is carrier,
Making fiber occur swelling, compactness reduces, and carries dyestuff entrance fibrous inside.
Beneficial effect
(1) due to the fact that disperse dyes are practically insoluble in water, after entering fiber, be difficult to split away off from fiber, therefore after upper dye
Every fastness is excellent；The polyimide fiber dyeed through the method obtains color depth, and dyefastness is high, and the method technique is simple,
Processing cost is relatively low, has good industrial application value.
(2) present invention can use disperse blue to polyimide fiber dye, add fiber per se with yellow, Dry Sack be green, can
For military outdoor protective garment.
(3) present invention can use disperse red to polyimide fiber dye, add fiber per se with yellow, Dry Sack is Chinese red,
Can be used for fire fighting protective clothing.
Accompanying drawing explanation
Fig. 1 is (A) untreated polyimide fiber of embodiment 1；(B) polyimide fiber after processing；
Fig. 2 is the dyeing flow chart of embodiment 1；
Fig. 3 is the dyeing flow chart of embodiment 2.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments be merely to illustrate the present invention and not
For limiting the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, those skilled in the art can
To make various changes or modifications the present invention, these equivalent form of values fall within the application appended claims limited range equally.
Embodiment 1
(1) polyimide fiber is put in dehydrated alcohol, bath raio 1:100, process 60 minutes at 60 DEG C, after cleaning, put into 30g/L
In sodium hydroxide solution, bath raio is 1:100, processes 10 minutes at 80 DEG C, then washes drying.
(2), under room temperature, the polyimide fiber that step (1) obtains is put into by disperse blue SE-2R being calculated as 5% with fabric weight
Dyestuff, concentration are that in the sodium nitrate of 4g/L and the working solution of benzyl alcohol that concentration is 40g/L composition, working solution bath raio is 1:100,
It is warming up to 135 DEG C with 2 DEG C/min, is incubated 45min, then cools to 60 DEG C with 2 DEG C/min of speed, washing.
In the present embodiment, the blue disperse dye of use, add fiber per se with yellow, it is not necessary to multiple dyestuff colorant match,
Directly Dry Sack is green, can be used for military outdoor protective garment.After dyeing, measure the K/S value of fiber, washing fastness, friction jail
Degree and strength, result is as shown in table 1.
Table 1 polyimide fiber disperse blue SE-2R dyeability
As it can be seen from table 1 after disperse dyes carrier high-temperature pressure dyeing, the dye level of fiber is significantly improved, soap
Washing fastness and crock fastness is excellent, fibre strength declines inconspicuous.In the present embodiment, disperse blue SE-2R dyestuff is C.I.Disperse
Blue 183, usedPolyimide fiber is provided by Jiangsu Ao Shen new material Co., Ltd, and molecular formula is as follows:
Embodiment 2
(1) polyimide fiber is put in dehydrated alcohol, bath raio 1:100, process 60 minutes at 60 DEG C, after cleaning, put into 20g/L
In sodium hydroxide solution, bath raio is 1:100, processes 10 minutes at 80 DEG C, then washes drying.
(2), under room temperature, the polyimide fiber that step (1) obtains is put into by the disperse red being calculated as 5% with fabric weight
C.I.Disperse Red 227 dyestuff, concentration are in the sodium nitrate of 4g/L and the working solution of benzyl alcohol that concentration is 40g/L composition,
Working solution bath raio is 1:100, is warming up to 130 DEG C with 2 DEG C/min, is incubated 30min, then cools to 60 DEG C with 2 DEG C/min of speed,
Washing.
In the present embodiment, the red disperse dyes of use, add fiber per se with yellow, it is not necessary to the colorant match of multiple dyestuff,
Directly Dry Sack is Chinese red, can be used for fire fighting protective clothing.After dyeing, measure the K/S value of fiber, washing fastness, crock fastness
And strength, result is as shown in table 2.
Table 2 polyimide fiber disperse red C.I.Disperse Red 227 dyeability
From table 2 it can be seen that after disperse dyes carrier high-temperature pressure dyeing, the dye level of fiber is significantly improved, soap
Washing fastness and crock fastness is excellent, fibre strength declines inconspicuous.In the present embodiment, dispersive red dye is C.I.Disperse Red
227, usedPolyimide fiber is provided by Jiangsu Ao Shen new material Co., Ltd.
Claims (3)
1. a method for polyimide fiber disperse dyeing, including:
(1) polyimide fiber is put in the solution of degreaser composition, bath raio 1:70～120, process 50～70 minutes at 50～70 DEG C,
Putting in 2～40g/L alkali liquor after cleaning, bath raio is 1:70～120, processes 5～15 minutes at 70～90 DEG C, then washes drying；
Wherein, one or more during alkali liquor is sodium hydroxide solution, potassium hydroxide solution, ammonia, sodium carbonate liquor；
(2) under room temperature, putting in working solution by the polyimide fiber that step (1) obtains, working solution bath raio is 1:70～120, rises
Temperature, to 120～150 DEG C, is incubated 30～60min, then cools to 60 DEG C, washing；Wherein, working solution consists of: with fabric weight
Amount is calculated as 1～sodium nitrate that the disperse dyes of 8%, concentration are 1～8g/L and carrier that concentration is 30～50g/L, uses High Temperature High Pressure
Staining combines carrier dyeing process；Carrier is the one in benzyl alcohol, essence of Niobe, 1-Phenylethanone..
The method of a kind of polyimide fiber disperse dyeing the most according to claim 1, it is characterised in that: described step (1)
In degreaser be dehydrated alcohol.
The method of a kind of polyimide fiber disperse dyeing the most according to claim 1, it is characterised in that: described step (2)
In heating rate and rate of temperature fall be 2 DEG C/min.
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| CN201410817952.2A CN104532622B (en) | 2014-12-19 | 2014-12-19 | A kind of method of polyimide fiber disperse dyeing |
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| CN201410817952.2A CN104532622B (en) | 2014-12-19 | 2014-12-19 | A kind of method of polyimide fiber disperse dyeing |
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| CN104532622B true CN104532622B (en) | 2016-08-24 |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105133378B (en) * | 2015-09-25 | 2017-09-15 | 江南大学 | A kind of polyimide fiber product disperse dyeing dyeing accelerant |
| CN105401401A (en) * | 2015-12-08 | 2016-03-16 | 江南大学 | Preparation method of chemical surface modification easily-dyed polyimide fabric |
| CN105603719A (en) * | 2016-03-17 | 2016-05-25 | 江南大学 | Preparation method of easy-to-dye polyimide fabric employing chemical reduction method |
| CN105951435B (en) * | 2016-06-06 | 2018-01-02 | 盐城工学院 | A kind of colouring method of modified polyimide fabric |
| CN106638049B (en) * | 2016-08-18 | 2019-05-17 | 仪征市海帆化工有限公司 | Asepsis environment-protecting suitable for embedding oxygen polyimide material is plasticized carrier and its application |
| CN106930120A (en) * | 2017-03-16 | 2017-07-07 | 江苏工程职业技术学院 | A kind of colouring method of polyimide fiber |
| CN106930117A (en) * | 2017-04-14 | 2017-07-07 | 江南大学 | A kind of cationic dyeing method of polyimide fiber |
| CN107164979B (en) * | 2017-05-16 | 2019-07-02 | 江南大学 | A kind of polyimide support colouring method |
| CN107130445B (en) * | 2017-05-19 | 2019-07-30 | 江苏先诺新材料科技有限公司 | A method of improving dyeing polyimide fiber mechanical property |
| CN107287933A (en) * | 2017-07-14 | 2017-10-24 | 陕西元丰纺织技术研究有限公司 | A kind of colouring method of polyimide fiber or polyimides fabric |
| CN107354775B (en) * | 2017-08-15 | 2019-06-21 | 江南大学 | A kind of ether alcohol class carrier dyeing method of polyimide fiber and fabric |
| CN107447553B (en) * | 2017-08-15 | 2020-01-17 | 江南大学 | Ketone ester carrier dyeing method for polyimide fiber and fabric |
| CN109235073A (en) * | 2018-09-29 | 2019-01-18 | 青岛亿天环保科技有限公司 | A kind of cationic dyeing method of polyimide fiber |
| CN109898346A (en) * | 2019-02-28 | 2019-06-18 | 江苏工程职业技术学院 | A kind of colouring method of polyimides yarn |
| CN109898347A (en) * | 2019-02-28 | 2019-06-18 | 江苏工程职业技术学院 | A kind of colouring method of polyimides staple in bulk |
| CN111549548B (en) * | 2020-06-08 | 2022-06-03 | 武汉纺织大学 | Method for dyeing high-performance fiber in liquid film second |
| CN113445331A (en) * | 2021-07-22 | 2021-09-28 | 绍兴市柯桥区东纺纺织产业创新研究院 | Dyeing method for improving dyeing performance of polyimide fibers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299674A (en) * | 1988-10-07 | 1990-04-11 | Teijin Ltd | Dyed polyester imide fiber and method for dyeing thereof |
| US5207803A (en) * | 1990-09-28 | 1993-05-04 | Springs Industries | Method for dyeing aromatic polyamide fibrous materials: n,n-diethyl(meta-toluamide) dye carrier |
| JPH0813356A (en) * | 1994-06-20 | 1996-01-16 | Teijin Ltd | Method for dyeing elastic fiber |
| US20070224422A1 (en) * | 2006-03-25 | 2007-09-27 | Youssef Fakhreddine | Colorfast dyed poly ether imide articles including fiber |
| CN101446037B (en) * | 2008-12-29 | 2011-07-20 | 中国科学院长春应用化学研究所 | Preparation method of electric-conducting polyimide fiber |
| CN103541214B (en) * | 2013-10-21 | 2016-05-11 | 绍兴文理学院 | For improving the method for polyimide fiber basic dyeing performance |
| CN103938439A (en) * | 2014-05-07 | 2014-07-23 | 北京化工大学 | Surface modification method for high-performance polyimide fiber as composite reinforced material |
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