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Double-bleaching with sodium chlorite and double-oxygen-bleaching process for linen

A linen yarn and process technology, used in textiles and papermaking, can solve the problems of large damage to fiber strength and affect the spinnability of linen yarn, and achieve the effect of maintaining yarn quality, keeping skin fresh, and increasing spinnability.

Inactive Publication Date: 2021-06-08
ZHEJIANG AXIANG LINEN TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The flax yarn in the prior art generally adopts single sub-bleaching and single oxygen bleaching technology, but the traditional single sub-oxygen bleaching process greatly damages the strength of the fiber, which will affect the spinnability of the linen yarn, so it is necessary to study A double sub-bleaching and double oxygen bleaching process for linen yarn, thereby increasing the spinnability of the linen yarn and improving the use function of the linen yarn

Method used

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  • Double-bleaching with sodium chlorite and double-oxygen-bleaching process for linen
  • Double-bleaching with sodium chlorite and double-oxygen-bleaching process for linen

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A double sub-bleaching and double-oxygen bleaching process for flax yarn, specifically comprising the following steps:

[0027] Step A pretreatment process: add sulfuric acid: 1.5g / L, scouring agent TP: 0.8g / L into deionized water, stir evenly, adjust the temperature to 28°C, and process for 35 minutes; no liquid drainage;

[0028] Step B sub-bleaching process 1: continue to add NaClO 2 、NaNO 3 and stabilizer, stir evenly, adjust the temperature to 48°C, and process for 35 minutes; drain;

[0029] Step C sub-bleaching process 2: sulfuric acid, scouring agent, NaClO 2 、NaNO 3 , stabilizer and deionized water are stirred evenly, the temperature is adjusted to 50°C, and the processing time is 35 minutes; draining; washing with water for 15 minutes; overflowing for 18 minutes;

[0030] Step D oxygen bleaching process 1: the penetrant, scouring agent, NaOH, Na 2 CO 3 , stabilizer, Na 2 SiO 3 、H 2 o 2 Stir with deionized water evenly, adjust the temperature to 90°C±...

Embodiment 2

[0037] A double sub-bleaching and double-oxygen bleaching process for flax yarn, specifically comprising the following steps:

[0038] Step A pretreatment process: add sulfuric acid: 1.8g / L, scouring agent TP: 0.4g / L into deionized water, stir evenly, adjust the temperature to 30°C, and process for 20 minutes; do not drain;

[0039] Step B sub-bleaching process 1: continue to add NaClO 2 、NaNO 3 and stabilizer, stir evenly, adjust the temperature to 55°C, and process for 20 minutes; drain;

[0040] Step C sub-bleaching process 2: sulfuric acid, scouring agent, NaClO 2、NaNO 3 , stabilizer and deionized water are stirred evenly, the temperature is adjusted to 55°C, and the treatment time is 20 minutes; draining; washing with water for 20 minutes; overflowing for 15 minutes;

[0041] Step D oxygen bleaching process 1: the penetrant, scouring agent, NaOH, Na 2 CO 3 , stabilizer, Na 2 SiO 3 、H 2 o 2 Stir with deionized water evenly, adjust the temperature to 90°C±1.5°C, a...

Embodiment 3

[0048] A double sub-bleaching and double-oxygen bleaching process for flax yarn, specifically comprising the following steps:

[0049] Step A pretreatment process: add sulfuric acid: 1g / L, scouring agent TP: 1g / L into deionized water, stir evenly, adjust the temperature to 25°C, and process for 40 minutes; no liquid is drained;

[0050] Step B sub-bleaching process 1: continue to add NaClO 2 、NaNO 3 and stabilizer, stir evenly, adjust the temperature to 45°C, and process for 50 minutes; drain;

[0051] Step C sub-bleaching process 2: sulfuric acid, scouring agent, NaClO 2 、NaNO 3 , stabilizer and deionized water are stirred evenly, the temperature is adjusted to 45°C, and the treatment time is 50 minutes; drain; wash with water for 10 minutes; overflow for 20 minutes;

[0052] Step D oxygen bleaching process 1: the penetrant, scouring agent, NaOH, Na 2 CO 3 , stabilizer, Na 2 SiO 3 、H 2 o 2 Stir with deionized water evenly, adjust the temperature to 90°C±1.5°C, and p...

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Abstract

The invention discloses a double-bleaching with sodium chlorite and double-oxygen-bleaching process for linen. The process includes the following steps: adding sulfuric acid and a scouring agent into deionized water, and carrying out treatment; continuously adding sodium chlorite, sodium nitrate and a stabilizer, and carrying out treatment; discharging liquid; adding the sulfuric acid, scouring agent, sodium chlorite, sodium nitrate and stabilizer into the deionized water, and carrying out treatment; discharging liquid; washing with water; performing overflowing; adding a penetrant, the scouring agent, sodium hydroxide, sodium carbonate, the stabilizer, sodium silicate and hydrogen peroxide into the deionized water, heating and carrying out treatment; discharging liquid; and adding the scouring agent, sodium carbonate, sodium silicate, stabilizer and hydrogen peroxide into the deionized water, heating and carrying out treatment, and washing with water. The double-bleaching with sodium chlorite and double-oxygen-bleaching process is adopted, the defects of particles and nubs of the linen are reduced, the quality of the linen is improved, and the spinnability of the linen is improved; and the yarn evenness of the linen is improved by trial of a new chemical reagent complemented by control on the dosage, temperature and time of the chemical reagent.

Description

technical field [0001] The invention relates to the technical field of flax spinning, in particular to a double sub-bleaching and double oxygen bleaching process for flax yarn. Background technique [0002] Flax fiber is a rare natural fiber, accounting for only 1.5% of the total natural fiber. It has the functions of moisture absorption and heat dissipation, health care and antibacterial, anti-fouling, anti-static, anti-ultraviolet, etc., and has excellent flame retardant effect. But at the same time it has a rough appearance and a stiff feel. How to make full use of strengths and circumvent weaknesses to weave flax fibers into linen fabrics with delicate touch and comfortable wear has become the goal that experts in this field strive to overcome. Although linen woven fabrics have a history of thousands of years, at least so far, no matter how to adjust the production process, or the reasonable use of various additives such as softeners and finishing agents, it is impossi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L4/26D06L4/13D06L4/12D06L4/70D06L4/75
CPCD06L4/26D06L4/13D06L4/12D06L4/70D06L4/75
Inventor 陈根聪徐桂贤倪国学泮礼文钟海祥张凤娥韩荣平
Owner ZHEJIANG AXIANG LINEN TEXTILE
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