Preparation method of ramie fibers for high-count textile fabric

Abstract

The invention relates to a preparation method of ramie fibers for a high-count textile fabric. The preparation method comprises the steps of 1) preimpregnation, wherein raw ramie is immersed in a presoak containing sodium hydroxide for preimpregnation, taken out and dehydrated to obtain a preimpregnated material; 2) steam explosion, wherein the obtained preimpregnated material is subjected to steam explosion to obtain a steam explosion material; 3) boiling off, wherein the obtained steam explosion material is placed in a degumming solution for heat preservation and boiling off to obtain a boiling-off material; the degumming solution comprises water and the following components of sodium hydroxide, sodium sulfite, sodium metasilicate, sodium tripolyphosphate and sodium dodecyl benzene sulfonate; 4) ultrasonic ramie washing, wherein the obtained boiling-off material is placed in water for ultrasonic immersion washing to obtain a water washing material; 5) aftertreatment. The residual gumratio of the obtained ramie fibers reaches 1.2% or below, residual gum is less, and the degumming rate is high; the fiber count is high and reaches 2655 Nm or above, and fibrils of the high-count rawramie are fully released; the loss of strength is less; the first-grade product rate reaches 93.54% or above, the quality is high, and the ramie fibers are fluffy and soft, and suitable for producingthe high-count light ramie textile fabric.

Description

technical field

[0001] The invention belongs to the technical field of textile fabrics, in particular to a method for preparing ramie fibers for high-count textile fabrics. Background technique

[0002] Ramie is a representative natural hemp fiber unique to my country, rich in resources, very suitable for processing into high-grade textile fabrics. Compared with general natural fibers such as cotton fiber and wool, ramie fiber is more slender, has a large initial modulus, light texture, better moisture absorption and air permeability; due to the structure of pyrimidine and purine, ramie fiber has significant The antibacterial effect can inhibit the growth of Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and other bacteria, making ramie fabrics have excellent anticorrosion, antibacterial and mildew resistance, and is a high value-added textile raw material with health care functions. With the progress of society and the improvement of living standards, the ...

Examples

Embodiment 1

[0031] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0032]1) Pre-soaking: according to the bath ratio of 1:3.0, immerse the raw ramie in the pre-soaking solution with a sodium hydroxide concentration of 20.0g / L for 20 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0033] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 200°C, the explosion pressure is 3.2MPa, the heat preservation and pressure are maintained for 4.0min, and the pressure is released to obtain the steam explosion material;

[0034] 3) Scouring: according to the ratio of bath ratio of 1:10, the steam explosion material unloaded from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation an...

Embodiment 2

[0039] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0040] 1) Pre-soaking: according to the bath ratio of 1:3.5, immerse the raw ramie in the pre-soaking solution with a concentration of sodium hydroxide of 18.0g / L for 25 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0041] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 210°C, the explosion pressure is 3.0MPa, the heat preservation and pressure are kept for 3.5min, and the pressure is released to obtain the steam explosion material;

[0042] 3) Scouring: According to the ratio of bath ratio of 1:11, the steam explosion material discharged from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation an...

Embodiment 3

[0047] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0048] 1) Pre-soaking: according to the bath ratio of 1:4.0, immerse the raw ramie in the pre-soaking solution with a sodium hydroxide concentration of 16.0g / L for 30 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0049] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 205°C, the explosion pressure is 3.1MPa, the heat preservation and pressure are maintained for 4.5min, and the pressure is released to obtain the steam explosion material;

[0050] 3) Scouring: according to the ratio of bath ratio of 1:12, the steam explosion material discharged from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation...

technical field

[0001] The invention belongs to the technical field of textile fabrics, in particular to a method for preparing ramie fibers for high-count textile fabrics. Background technique

[0002] Ramie is a representative natural hemp fiber unique to my country, rich in resources, very suitable for processing into high-grade textile fabrics. Compared with general natural fibers such as cotton fiber and wool, ramie fiber is more slender, has a large initial modulus, light texture, better moisture absorption and air permeability; due to the structure of pyrimidine and purine, ramie fiber has significant The antibacterial effect can inhibit the growth of Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and other bacteria, making ramie fabrics have excellent anticorrosion, antibacterial and mildew resistance, and is a high value-added textile raw material with health care functions. With the progress of society and the improvement of living standards, the ...

Examples

Embodiment 1

[0031] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0032]1) Pre-soaking: according to the bath ratio of 1:3.0, immerse the raw ramie in the pre-soaking solution with a sodium hydroxide concentration of 20.0g / L for 20 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0033] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 200°C, the explosion pressure is 3.2MPa, the heat preservation and pressure are maintained for 4.0min, and the pressure is released to obtain the steam explosion material;

[0034] 3) Scouring: according to the ratio of bath ratio of 1:10, the steam explosion material unloaded from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation an...

Embodiment 2

[0039] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0040] 1) Pre-soaking: according to the bath ratio of 1:3.5, immerse the raw ramie in the pre-soaking solution with a concentration of sodium hydroxide of 18.0g / L for 25 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0041] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 210°C, the explosion pressure is 3.0MPa, the heat preservation and pressure are kept for 3.5min, and the pressure is released to obtain the steam explosion material;

[0042] 3) Scouring: According to the ratio of bath ratio of 1:11, the steam explosion material discharged from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation an...

Embodiment 3

[0047] The preparation method of the high-count textile fabric of the present embodiment uses ramie fiber, comprises the steps:

[0048] 1) Pre-soaking: according to the bath ratio of 1:4.0, immerse the raw ramie in the pre-soaking solution with a sodium hydroxide concentration of 16.0g / L for 30 minutes, then take it out and dry it for dehydration until the water content is 50%. , get prepreg;

[0049] 2) Steam explosion: put the prepreg obtained in step 1) into a steam explosion device for steam explosion, the steam temperature is 205°C, the explosion pressure is 3.1MPa, the heat preservation and pressure are maintained for 4.5min, and the pressure is released to obtain the steam explosion material;

[0050] 3) Scouring: according to the ratio of bath ratio of 1:12, the steam explosion material discharged from the steam explosion device in step 2) is directly (interval time ≤ 2min) put into the scouring device filled with degumming liquid for scouring, 95°C heat preservation...

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