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Dyeing method for modified polyimide fabrics

A polyimide and dyeing method technology, applied in the field of fabric dyeing, can solve the problems of polyimide dyeing difficulties, limited application, increased dyeing difficulty, etc., and achieve good dyeing effect, good color fastness and low cost Effect

Active Publication Date: 2016-09-21
DONGGUAN SENLIN TEXTILE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the regular arrangement of polyimide fiber macromolecules, tight fiber structure and strong fiber hydrophobicity, it is extremely difficult to dye polyimide. In addition, the polyimide fiber itself has a yellow color, which makes it more difficult to dye. , limiting the application of its products in civil and industrial fields

Method used

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  • Dyeing method for modified polyimide fabrics
  • Dyeing method for modified polyimide fabrics
  • Dyeing method for modified polyimide fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of dyeing method of modified polyimide fabric, comprises the following steps:

[0039] Clean the polyimide fabric with 1g / L sodium carbonate solution in ultrasonic wave for 5min at 40°C; then clean the polyimide fabric with absolute ethanol solution in ultrasonic wave for 2min at 20°C; Then the polyimide fabric was cleaned with deionized water for 1min; wherein, the power used for ultrasonic cleaning was 100kHz;

[0040] Put the cleaned polyimide fabric into an oven and dry it at 30°C;

[0041] The polyimide fabric is pretreated with low-temperature plasma, the treatment power is 100W, the treatment time is 1min, and the treatment atmosphere is oxygen;

[0042] The polyimide fabric after plasma treatment was quickly put into the acrylic acid solution, the bath ratio was 1:40, the temperature was 30°C, and it was stirred continuously. The acrylic acid solution was made of acrylic acid and deionized water with a volume ratio of :1 mixed;

[0043] After the graft...

Embodiment 2

[0051] A kind of dyeing method of modified polyimide fabric, comprises the following steps:

[0052] Clean the polyimide fabric with 5g / L sodium carbonate solution in ultrasonic for 10min at 100°C; then clean the polyimide fabric with absolute ethanol and acetone solution in ultrasonic for 10min at 60°C ℃; then the polyimide fabric was cleaned with deionized water for 5 minutes; wherein, the power used for ultrasonic cleaning was 70kHz;

[0053] Put the cleaned polyimide fabric into an oven and dry it at 100°C;

[0054] The polyimide fabric is pretreated with low-temperature plasma, the treatment power is 500W, the treatment time is 30min, and the treatment atmosphere is argon;

[0055] The polyimide fabric after plasma treatment was quickly put into the acrylic acid solution, the bath ratio was 1:150, the temperature was 80°C, and the acrylic acid solution was made of acrylic acid and deionized water with a volume ratio of 1 :10 mixed;

[0056] After the grafting reaction ...

Embodiment 3

[0064] A kind of dyeing method of modified polyimide fabric, comprises the following steps:

[0065] Clean the polyimide fabric with a 10g / L sodium carbonate solution in an ultrasonic wave for 8 minutes at a temperature of 80°C; then clean the polyimide fabric with an absolute ethanol solution in an ultrasonic wave for 5 minutes at a temperature of 45°C; Then the polyimide fabric was cleaned with deionized water for 3 minutes; wherein, the power used for ultrasonic cleaning was 40kHz;

[0066] Put the cleaned polyimide fabric into an oven and dry it at 80°C;

[0067] The polyimide fabric is pretreated with low-temperature plasma, the treatment power is 300W, the treatment time is 10min, and the treatment atmosphere is nitrogen;

[0068] The polyimide fabric after plasma treatment was put into the acrylic acid solution quickly, the bath ratio was 1:100, the temperature was 45°C, and it was stirred continuously. :5 mixed;

[0069] After the grafting reaction was completed, th...

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Abstract

The invention relates to the field of fabric dyeing, in particular to a dyeing method for modified polyimide fabrics. The method comprises the following steps that polyimide fabrics are cleaned and dried; low-temperature plasma is adopted for pretreatment; the polyimide fabrics are quickly put in an acrylic acid solution for a grafting reaction, and the modified polyimide fabrics are obtained after washing and drying; dispersed cationic dye is used for dyeing, washing is conducted after dyeing, and then drying is conducted. According to the method, cleaning is conducted firstly to wash away impurities, oil and the like on the surfaces of fibers, the low-temperature plasma is used for roughening the surfaces of the polyimide fibers, total reflection of light is weakened, and diffuse reflection of light is enhanced; besides, a polar group is introduced by initiating the grafting reaction of acrylic acid, cations on dye molecules can be in ionic bond combination with carboxyl, and therefore the problem that the polyimide fibers are hard to dye can be effectively solved. By the adoption of the dyeing method for the modified polyimide fabrics, the process is simple, and the fabrics obtained after dyeing are high in color depth and good in color fastness.

Description

technical field [0001] The invention relates to the field of fabric dyeing, in particular to a method for dyeing modified polyimide fabrics. Background technique [0002] Polyimide (PI) is a nitrogen-containing aromatic heterocyclic high molecular polymer containing imide groups in the molecular chain. It has excellent mechanical properties, good heat resistance, chemical stability, adhesion, and radiation resistance. Performance and other excellent properties, can be used as high-performance fibers, special engineering plastics, high-temperature composite materials, selective permeable membranes and high-temperature coatings, etc., widely used in high-tech fields such as aerospace, battery separators, separation membranes, electronic power, precision machinery, etc. . [0003] Polyimide has good mechanical properties. The tensile strength and tensile modulus of homophenylene polyimide film (Kapton) are 170MPa and 3.0GPa, respectively, while the tensile strength and tensile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/30D06P1/16D06P3/02
CPCD06M14/30D06P1/16D06P3/004D06P3/024
Inventor 高大伟王丽丽祁珍明周天池王春霞郑成辉林洪芹李伟伟
Owner DONGGUAN SENLIN TEXTILE LTD
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