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Pretreatment processing method of short flax fibers

A processing method and short fiber technology, which is applied in the field of pretreatment processing of flax short fiber, to achieve the effects of shortening the processing technology, expanding the scope of use, and improving the quality of yarn

Inactive Publication Date: 2015-03-25
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to investigations, using this processing method, flax staple fibers are suitable for weft knitting single jersey yarns for circular knitting machines. At present, there are no reports at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Process flow of the present invention:

[0019] (1) Peracetic acid pretreatment: peracetic acid 2.0 g / L, penetrant JFC 1.5 g / L, temperature 40°C,

[0020] Time 50min, liquor ratio 1:20;

[0021] (2) Warm water washing: 40-50°C;

[0022] (3) Scouring: temperature 90°C, time 80 min, sodium percarbonate 8.0 g / L, peracetic acid 2.0 g / L, sodium pyrophosphate 1.5 g / L, EDTA 2.5 g / L, penetrant JFC 1.5 g / L , bath ratio 1:20;

[0023] (4) Hot water washing: 80-90°C;

[0024] (5) Washing in cold water: 20-30°C;

[0025] (6) Dehydration;

[0026] (7) Drying: 100~105℃ to constant weight.

Embodiment 2

[0028] Process flow of the present invention:

[0029] (1) Peracetic acid pretreatment: peracetic acid 2.0 g / L, penetrant JFC 2.0 g / L,

[0030] Temperature 45℃, time 50min, bath ratio 1:20;

[0031] (2) Warm water washing: 40-50°C;

[0032] (3) Scouring: temperature 90°C, time 85min, sodium percarbonate 8.0 g / L, peracetic acid 2.0 g / L, sodium pyrophosphate 2.0 g / L, EDTA 2.0 g / L, penetrant JFC 1.5 g / L , bath ratio 1:20;

[0033] (4) Hot water washing: 80-90°C;

[0034] (5) Washing in cold water: 20-30°C;

[0035] (6) Dehydration;

[0036] (7) Drying: 100~105℃ to constant weight.

Embodiment 3

[0038] Process flow of the present invention:

[0039] (1) Peracetic acid pretreatment: peracetic acid 2.5g / L, penetrant JFC 1.5 g / L,

[0040] Temperature 45℃, time 55min, bath ratio 1:20;

[0041] (2) Warm water washing: 40-50°C;

[0042] (3) Scouring: temperature 95°C, time 80min, sodium percarbonate 8.0 g / L, peracetic acid 2.0 g / L, sodium pyrophosphate 1.5 g / L, EDTA 2.0 g / L, penetrant JFC 1.5 g / L , bath ratio 1:20;

[0043] (4) Hot water washing: 80-90°C;

[0044] (5) Washing in cold water: 20-30°C;

[0045] (6) Dehydration;

[0046] (7) Drying: 100~105℃ to constant weight.

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Abstract

The invention discloses a pretreatment processing method of short flax fibers. The pretreatment processing method comprises the following steps: with the short flax fibers as a raw material, carrying out procedures of peracetic acid pretreatment, warm washing, sodium percarbonate-peracetic acid scouring, hot washing, cold washing, dehydration and drying. The pretreatment processing method has the beneficial effects that most impurities such as pectin and lignin in the short flax fibers are removed by virtue of an ecological environment-friendly aid, so that wastewater pollution is avoided; processing conditions are relatively mild, so that the problem that the fiber strength is greatly damaged due to strong base and high temperature in a traditional process is remedied; the procedures of scouring and bleaching are simultaneously finished, so that impurity removal and bleaching are finished, the processing process is shortened, and the production efficiency is improved; original auxiliary projects and facilities can be utilized, so that the operation is easy, and the cost is low; the processed short fibers are pure white, soft, high in splitting degree and good in spinnability, so that the quality of finished yarns is beneficially improved, the technical requirements of the production of flax yarns for circular machine weft knitted single jersey are well met, and the grade of application range is promoted.

Description

technical field [0001] The invention relates to a pretreatment processing method of flax staple fiber, which belongs to the technical field of textiles. Background technique [0002] The main component of short flax fiber is cellulose, in addition, it also contains pectin, lignin and other impurities, and the impurity content is higher than that of long flax, so its splitting degree and softness are lower than that of long flax, and its spinnability is poor, and the product grade is low. Compared with the traditional pretreatment process, the present invention uses the environment-friendly additive sodium percarbonate-peracetic acid as the scouring agent to pretreat the flax short fiber. In order to reduce the dosage of sodium percarbonate and reduce the damage of cellulose strength, at the same time, the synergistic effect of peracetic acid is used to improve the scouring effect and improve the overall performance of the product. This method treats the processed flax short...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/02D06L3/16D06L1/16D06L4/13D06L4/15
Inventor 高洁马中华王高扬高颖李海宁
Owner QIQIHAR UNIVERSITY
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