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A dyeing method of polyacrylonitrile-based carbon fiber raw silk waste

A technology of polyacrylonitrile-based carbon fiber and dyeing method, which is applied in the direction of dyeing method, textiles and papermaking, etc., and can solve problems such as broken filaments, affecting the quality of carbon fibers, and entanglement of wool filaments

Active Publication Date: 2015-12-02
SUZHOU XINENG ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the quality of the original silk is poor, the properties of each other are quite different, and it is easy to entangle the wool during carbonization, or even break the wire, which will inevitably increase the consumption of the original silk while affecting the quality of the carbon fiber.
At present, due to technical reasons, a lot of waste raw silk will be produced in the process of carbon fiber production in my country, and many manufacturers have not been able to make good use of it, resulting in waste

Method used

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  • A dyeing method of polyacrylonitrile-based carbon fiber raw silk waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: The carded polyacrylonitrile-based carbon fiber precursor waste was treated with 2g / L detergent 209, 1g / L flattened with O, and treated at a temperature of 60°C for 30 minutes at a bath ratio of 20:1. Rinse well. Add 40°C dyeing solution, the composition of the dyeing solution: cationic red X-GRL dye 3% (owf), adjust the pH of the dyeing solution to 4.5 with acetic acid / sodium acetate buffer solution, and the liquor ratio (weight ratio) 20:1. First raise the temperature to 90°C at a speed of 1.5°C / min, heat-preserve and dye for 15 minutes, then raise the temperature to 120°C at a speed of 1.0°C / min, and hold for 15 minutes to dye. Then cool down to 50°C at a rate of 1.5°C / min, wash with water, dehydrate, and dry. The K / S value of the dyed fiber (red) measured by the Datacolor SF650 color measuring and matching instrument is 34.312, referring to GB / T3921-2008 "Textile Color Fastness Test Color Fastness to Soaping", the staining fastness of the dyed fiber is m...

Embodiment 2

[0014] Example 2: Use 2g / L cleaning agent 209 for the carded polyacrylonitrile-based carbon fiber precursor waste, add O in 1g / L, and use a bath ratio (weight ratio) of 20:1 at a temperature of 60°C After 30 minutes of treatment, fully wash with water. Add 40°C dye solution, dye solution composition: cationic red X-GRL dye 0.72% (owf), cationic yellow X-GL dye 1.56% (owf), cationic blue X-BL dye 1.86% (owf), with acetic acid / acetic acid Sodium buffer was used to adjust the pH of the dye solution to 4.5, and the liquor ratio was 20:1. First raise the temperature to 90°C at a speed of 1.5°C / min, heat-preserve and dye for 15 minutes, then raise the temperature to 120°C at a speed of 1.0°C / min, and hold for 20 minutes to dye. Then cool down to 50°C at a rate of 1.5°C / min, wash with water, add 3% (owf) softener H-320A, liquor ratio 20:1, treat at 40°C for 10 minutes, wash with water, dehydrate, and dry. The K / S value of the dyed fiber (black) measured by DatacolorSF650 color meas...

Embodiment 3

[0015] Example 3: The carded polyacrylonitrile-based carbon fiber precursor waste was treated with 2g / L detergent 209, 1g / L flattened with O, and treated at a temperature of 60°C for 30 minutes at a bath ratio of 20:1. Rinse well. Add 40°C dyeing solution, the composition of the dyeing solution: cationic blue X-BL dye 1% (owf), adjust the pH of the dyeing solution to 4.5 with acetic acid / sodium acetate buffer solution, and the bath ratio (weight ratio) 20:1. First raise the temperature to 90°C at a speed of 1.5°C / min, heat-preserve and dye for 15 minutes, then raise the temperature to 120°C at a speed of 1.0°C / min, and hold for 10 minutes to dye. Then cool down to 50°C at a rate of 1.5°C / min, wash with water, dehydrate, and dry. The K / S value of the dyed fiber (blue) is 7.856 measured with a Datacolor SF650 color measuring and matching instrument, and the staining fastness of the dyed fiber is measured with reference to GB / T3921-2008 "Textile Color Fastness Tests Color Fastne...

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Abstract

The invention discloses a polyacrylonitrile-based carbon fiber protofilament waste dying method. The method comprises the following steps: pretreating protofilament waste, dyeing at high temperature with cationic dyes, aftertreating and the like. By virtue of the method, polyacrylonitrile protofilament waste can be dyed with various colors, especially deep colors, thus the color is bright, and the soaping-resisting colorfastness can be up to over grade 4. By the method, the applications of the polyacrylonitrile-based carbon fiber protofilament waste can be expanded, so that the waste is turned into wealth, and consequently, the waste can be used for textile processing, just like acrylic fibers.

Description

technical field [0001] The invention relates to a dyeing method of polyacrylonitrile-based carbon fiber precursor waste. Background technique [0002] Carbon fiber has become a high-performance reinforcing material due to its high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance and good electrical, thermal and heat transfer properties. It is widely used in aerospace vehicles, transportation Tools, sporting goods and medical equipment and other fields. Due to its excellent mechanical properties, polyacrylonitrile-based carbon fiber is the main product in today's carbon fiber, and its output accounts for 90% of the total output of all carbon fibers in the world. The quality of polyacrylonitrile precursor not only affects the performance of carbon fiber, but also restricts the production cost and market competitiveness of carbon fiber. Only high-quality precursors can produce high-performance ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/70
Inventor 王春梅李朝晖季涛缪勤华贾梦莉
Owner SUZHOU XINENG ENVIRONMENTAL SCI & TECH CO LTD