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Degumming flame-proof process technique for Han fibrilia

A technology of hemp fiber and flame retardant treatment, which is applied in the field of degumming and flame retardant treatment technology, can solve the problems of high residual glue rate, stiff hand feeling, unreliable dyeing, etc. Good finishing effect

Inactive Publication Date: 2008-09-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hemp fiber degumming flame-retardant treatment process to solve the problems of high residual glue rate, poor flame-retardant effect, unsatisfactory lignin removal effect in the existing hemp degumming process, and Low whiteness, stiff hand feeling and unreliable dyeing, etc. In the process of degumming and flame retardant treatment, the present invention simultaneously performs triple process of degumming, flame retardant and bleaching on the hemp fiber to shorten the finishing process and save costs

Method used

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  • Degumming flame-proof process technique for Han fibrilia
  • Degumming flame-proof process technique for Han fibrilia
  • Degumming flame-proof process technique for Han fibrilia

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Embodiment approach 1

[0050] The detailed process steps of the hemp raw hemp fiber degumming flame-retardant treatment process of the present invention are as follows:

[0051] 1. Hot water bath treatment

[0052] At 80°C, completely soak the fiber with deionized water (the concentration of the fiber in the solution is 25g / L) for 100min, and use a stirrer to stir clockwise / counterclockwise every 10min to make it soak evenly. Wash several times with water until the pH value of the soaking solution is 7.

[0053] 2. Pre-soaking treatment

[0054] At 60°C, use dilute sulfuric acid with a concentration of 9.8g / L to completely soak Gansu hemp raw hemp (the concentration of fiber in the solution is 25g / L) for 100min, and alternately stir clockwise / counterclockwise every 10min to make it soak evenly. Wash several times with water until the pH value of the soaking solution is 7.

[0055] 3. Pre-chlorination treatment

[0056] At room temperature, adjust the pH value to 4, use sodium hypochlorite with a...

Embodiment approach 2

[0075] According to the process method of embodiment 1, the difference of embodiment 2 is:

[0076] 1. During UV radiation, the concentration of hydrogen peroxide is 10g / L, the concentration of sodium hydroxide is 10g / L, the concentration of magnesium sulfate is 3g / L, the wavelength of ultraviolet radiation is 280nm, and the radiation time is 30min.

[0077] 2. During alkaline oxygen scouring, the scouring time is 150min, the scouring temperature is 120°C, the speed of the agitator is 150r / min, and the stirring method is alternating clockwise / counterclockwise every 30min.

[0078] 3. In primary and secondary flame retardant finishing, the soluble phosphorus flame retardant is FPK8001 with a concentration of 140g / L, the concentration of silane coupling agent KH-550 is 18g / L, and the anionic surfactant Mersolat The concentration of H-95 is 2g / L, the concentration of sodium hydroxide is 10g / L, the temperature of the hot alkali bath is 60°C, the time is 40min, the mechanical stir...

Embodiment approach 3

[0080] According to the process method of embodiment 1, the difference of embodiment 3 is:

[0081] 1. During UV radiation, the concentration of hydrogen peroxide is 14g / L, the concentration of sodium hydroxide is 14g / L, the concentration of magnesium sulfate is 4g / L, the wavelength of ultraviolet radiation is 350nm, and the radiation time is 50min.

[0082] 2. During alkaline oxygen scouring, the scouring time is 200min, the speed of the agitator is 200r / min, and the stirring method is alternating clockwise / counterclockwise every 20min.

[0083] 3. In primary and secondary flame retardant finishing, the soluble phosphorus flame retardant is FPK8001 with a concentration of 180g / L, the concentration of silane coupling agent KH-550 is 22g / L, and the anionic surfactant Mersolat The concentration of H-95 is 5g / L, the concentration of sodium hydroxide is 14g / L, the temperature of the hot alkali bath is 80°C, the time is 60min, the mechanical stirring rate is 100r / min, and the stir...

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Abstract

The invention discloses a Chinese bast fiber degumming flame retardant treatment technique. The technique carries out ultraviolet radiation, quencher and heating treatments after hot water bath, pre-pickling and pre-chlorination treatments; then carries out alkali oxygen-machine combined degumming treatment and finally carries out flame retardant treatment for twice repeatedly. The surface of the Chinese bast fiber treated by the technique has excellent degumming effect and is better than degumming with a normal alkali oxygen method and a mechanical method; the flame retardant effect is better than the effect of flame retardant post treatment aimed at a Chinese bast fabric and a better white content is obtained; a special blanching working procedure and a flame retardant working procedure are not needed to be arranged in post finishing, thus shortening the flow and saving the cost; the length and the fineness of the fiber are also improved after treatment; less polluting waste water is discharged. The invention is a green and environment protective technical method.

Description

technical field [0001] The invention relates to a degumming and flame-retardant treatment process for hemp (hemp) raw hemp fibers, especially on the basis of the alkali-oxygen-mechanical combined degumming method, in which different reagents are added at different stages, and quenching and heating are used. A kind of hemp fiber degumming and flame retardant treatment process carried out by measures such as hot alkali bath and strong ultraviolet radiation. Background technique [0002] The degumming method of existing hemp (being hemp) fiber is a lot, and its degumming effect has advantages and disadvantages respectively, also generally exists following problem: after degumming, fiber is loose and separated, and is as easy to burn as other natural cellulose fibers, and its textile cannot In special places such as high temperature and high heat, it is necessary to carry out special flame-retardant finishing in the finishing to meet the requirements. For example, Jiang Guohua o...

Claims

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Application Information

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IPC IPC(8): D06M10/06D06M11/50D06M11/68D06M13/282D06M13/50D06M101/06
Inventor 许并社罗玉成戴晋明魏丽乔
Owner TAIYUAN UNIV OF TECH
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