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Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application

A technology of flax sodium chlorite and sodium chlorite, which is applied in the direction of bleaching products, textiles and papermaking, and producing bast fibers by chemical methods, and can solve problems such as complexity, long process, and large pollution

Inactive Publication Date: 2008-12-03
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] An object of the present invention is to overcome the complexity of the existing suboxygen bleaching process, the long process and the shortcomings of large pollution, and to provide a stabilizer for degumming and bleaching of flax sodium chlorite

Method used

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  • Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application
  • Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application
  • Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Please see attached figure 2 , the technical process of flax roving degumming and bleaching in this embodiment is as follows figure 2 shown.

[0026] The yarn to be degummed and bleached adopts flax roving (the roving made by Yulu hemp, and the roving count is 18Nm) 200g. Soak flax roving in sulfuric acid (sulfuric acid 10g / L, room temperature, 20 minutes) → wash with water, then wash with sodium chlorite solution (bath ratio 1:10, sodium chlorite dosage 15g / L, pH=3.5, activator acetic acid 3g / L, stabilizer 3g / L, temperature 95°C) for 40 minutes, washed with water after treatment, and dried to complete the degumming and bleaching process of flax roving. Wherein, the composition (mass percentage) of the stabilizer is: 3% of hexamethyleneamine, 1% of hydrazine sulfate, 2% of triethanolamine, 1% of ammonium persulfate and water.

[0027] Table 1 is the main performance index comparison between degumming and bleaching of flax roving in Example 1 and conventional degum...

Embodiment 2

[0032] Please see attached figure 2 , the technical process of flax roving degumming and bleaching in this embodiment is as follows figure 2 shown.

[0033] The roving to be degummed and bleached adopts flax roving (the roving spun by Yulu hemp, and the roving count is 20Nm) 200g. Soak flax roving in sulfuric acid (sulfuric acid 8g / L, room temperature, 30 minutes) → wash with water, then use sodium chlorite solution (bath ratio 1:15, sodium chlorite dosage 20g / L, pH=4, activator acetic acid 5g / L, stabilizer 5g / L, temperature 100°C) for 30 minutes, washed with water after treatment, and dried to complete the degumming and bleaching process of flax roving. Wherein, the composition (mass percentage) of the stabilizer is: 5% of hexamethyleneamine, 3% of hydrazine sulfate, 6% of triethanolamine, 3% of ammonium persulfate and water.

[0034] Other conditions and methods are the same as in Example 1.

[0035] Table 2 is the main performance index comparison between degumming a...

Embodiment 3

[0040] Please see attached figure 2 , the present embodiment is to the technological process of flax fabric bleaching as figure 2 shown.

[0041] The fabric to be bleached adopts linen fabric (plain weave, 220g / m 2 , 150×158 pieces / dm) 30×40cm piece. Squeeze the linen fabric with acid (sulfuric acid 15g / L, room temperature) → stack (room temperature, 20 minutes) → wash with water, then use sodium chlorite solution (sodium chlorite dosage 20g / L, pH=4, activator acetic acid 6g / L, stabilizer 8g / L, temperature 95°C) for 30 minutes, washed with water after treatment, and dried to complete the bleaching process of linen fabric. Bleached linen was dyed using the following recipe. Wherein, the composition (mass percentage) of the stabilizer is: 6% of hexamethyleneamine, 4% of hydrazine sulfate, 5% of triethanolamine, 4% of ammonium persulfate and water.

[0042] Reactive dye B-4RFN 1%, Nacl 12~25g / L, leveling agent 5~10g / L, dyeing temperature 85°C, dyeing time 40 minutes; soap...

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Abstract

The invention relates to a stabilizer for sodium chlorite degumming and bleaching of linen rove and the textile and the new technology of degumming and bleaching for green environment protection. The stabilizer is a saturated solution of salt mixture, which comprises 3-13% by wt of six methylene amine, 1-6% by wt of diamine sulfate, 2-10% by wt of triethanolamine, 1-8% by wt of ammonium persulfate and water. In the process of degumming and bleaching, the stabilizer is joined to restrain generation and dissipation of chlorine dioxide so that not only bleaching conditions are satisfied and the quality of yarn is improved but also the health of operating workers is protected and the equipment is maintained. It is no-pollution so as to decrease the consumption of sodium chlorite and improve the utilization ratio of sodium chlorite is improved. The degumming and bleaching technology for linen rove can improve yarn evenness evidently, decrease hemp particle greatly, and improve the spinning number and the loom efficiency greatly. Especially it is provided with notable effect for primary color yarn with difficult spinning performance.

Description

technical field [0001] The invention relates to a stabilizer for sodium chlorite degumming and bleaching of flax roving and its fabric and a new technology for degumming and bleaching which is green and environment-friendly. Background technique [0002] The degumming and bleaching process of flax roving and its fabrics is pickling→sodium chlorite bleaching→water washing. In the process of sodium chlorite degumming and bleaching, adding this stabilizer can inhibit chlorine dioxide (clo 2 ) to reduce environmental pollution and achieve the purpose of degumming and bleaching of linen fabrics. [0003] Linen is one of the raw materials for textiles. Linen fabric has unique styles such as fast moisture absorption and heat dissipation, good air permeability, natural texture, soft tone, crisp and generous, etc. It is widely used in clothing, apparel and other fields, and is very popular among consumers. Flax fiber is composed of cellulose, hemicellulose, pectin, lignin, wax, nitr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/02D06L3/16D06M13/368D06M101/04D06L4/75
Inventor 汪前东杨继玲李兰刘必前
Owner INST OF CHEM CHINESE ACAD OF SCI
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