Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Environment-friendly novel hemp fiber degumming technology

An environmentally friendly technology for hemp fiber, applied in the field of degumming of new environmentally friendly hemp fiber, can solve the problems of large environmental pollution, large alkali consumption, short time and the like

Pending Publication Date: 2022-04-22
TUNGGA LINENANDCOTTON CO LTD
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium hydroxide is often used as a treatment agent in chemical degumming, which consumes a lot of alkali, and the degumming wastewater causes great environmental pollution; physical degumming is mainly mechanical degumming. At present, there are methods such as manual scraping, ultrasonic and steam blasting, but they can only remove Part of the gelatin, so it is often used as an auxiliary method; the biological enzyme degumming method uses the specificity and high efficiency of different enzymes to remove the external gelatin of the fiber, and the combined use of multiple enzymes has a better effect, but the biological enzyme degumming method degumming The efficiency is low and time-consuming, so this application combined with biological enzymatic degumming to develop a degumming technology with high degumming efficiency and short duration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly novel hemp fiber degumming technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of degumming technology of environment-friendly new hemp fiber, the process of the degumming technology of described environment-friendly new hemp fiber is:

[0021] (1) Disperse the hemp fiber in pure water 10 times the mass of the hemp fiber and perform ultrasonic treatment. The ultrasonic frequency is 40kHz, the temperature is 60°C, and the treatment time is 5min. To obtain pretreated hemp fiber; mix chitosan and 1-hydroxybenzotriazole according to the mass ratio of 1:0.65 and disperse them in deionized water 50 times the quality of chitosan, and add chitosan mass 0.2 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride with 4 times the mass of N-acetyl-L-cysteine ​​and chitosan, and with 1mol / L Adjust the pH to 5 with sodium hydroxide, stir and react at 400 rpm for 2 h at room temperature, precipitate with absolute ethanol and wash 3 times with deionized water, and dry in a 50° C. oven for 3 h to obtain mercapto-chitosan. The hemp fiber was dispersed ...

Embodiment 2

[0025] A kind of degumming technology of environment-friendly new hemp fiber, the process of the degumming technology of described environment-friendly new hemp fiber is:

[0026] (1) Disperse the hemp fiber in pure water 15 times the mass of the hemp fiber and perform ultrasonic treatment. The ultrasonic frequency is 50kHz, the temperature is 70°C, and the treatment time is 5min. To obtain pretreated hemp fiber; mix chitosan and 1-hydroxybenzotriazole according to the mass ratio of 1:0.68 and disperse them in deionized water 50 to 80 times the quality of chitosan, stir evenly and add chitosan 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride with 0.25 times the quality of N-acetyl-L-cysteine ​​and 5 times the quality of chitosan, and use 1mol / L of sodium hydroxide was used to adjust the pH to 5.5, stirred and reacted at 500 rpm for 2.5 h at room temperature, precipitated with absolute ethanol and washed 4 times with deionized water, and dried for 3.5 h in a 50° C. ...

Embodiment 3

[0030] A kind of degumming technology of environment-friendly new hemp fiber, the process of the degumming technology of described environment-friendly new hemp fiber is:

[0031] (1) Disperse the hemp fiber in pure water 20 times the mass of the hemp fiber and perform ultrasonic treatment. The ultrasonic frequency is 60kHz, the temperature is 80°C, and the treatment time is 6min. To obtain pretreated hemp fiber; mix chitosan and 1-hydroxybenzotriazole according to the mass ratio of 1:0.7 and disperse them in deionized water 80 times the quality of chitosan, and add chitosan mass 0.3 after stirring evenly 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride with 5.5 times the mass of N-acetyl-L-cysteine ​​and chitosan, and with 1mol / L Adjust the pH to 6 with sodium hydroxide, stir and react at room temperature at 600rpm for 3h, precipitate with absolute ethanol and wash 5 times with deionized water, and dry in a 50°C drying oven for 4h to obtain mercapto-chitosan. The ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses an environment-friendly novel hemp fiber degumming technology, and relates to the technical field of textile processing. When the hemp fiber degumming technology is carried out, firstly, the hemp fibers are subjected to ultrasonic pretreatment, and then sulfydryl chitosan treatment, irradiation treatment and steam explosion compound enzyme treatment are carried out; colloid is crushed through ultrasonic pretreatment, part of water-soluble impurities are removed, degumming is facilitated, sulfydryl chitosan and calcium ions in calcium pectate are chelated to generate soluble ammonium salt, and the solubility of pectin is increased; a gelatinous layer on the surface of the fiber is damaged through irradiation, and tiny cracks are generated on the surface; the steam flash explosion compound enzyme treatment overcomes the defect of long time consumption of enzyme degumming treatment, so that the colloid in the hemp fibers is completely separated, and the degumming rate is increased.

Description

technical field [0001] The invention relates to the technical field of textile processing, in particular to a degumming technology for environmentally friendly new hemp fibers. Background technique [0002] As a green and environmentally friendly ecological fiber, hemp fabrics not only have natural antibacterial, ultraviolet radiation shielding, moisture absorption and perspiration, softness and comfort, skin care and cleaning, odor absorption and wear resistance, but also have noble, elegant, unpretentious, natural and practical styles. . Therefore, hemp fabric has gradually become an ideal fabric in the hands of senior fashion designers. Therefore, the optimization of hemp fiber degumming process has attracted more and more attention. Due to the unique physical and chemical properties of hemp fiber, it is more difficult to degumming than ramie, flax and other hemp, which inhibits the further improvement of product quality. [0003] The traditional hemp degumming process...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
CPCD01C1/02
Inventor 赵秀文胡德清郑桂芝
Owner TUNGGA LINENANDCOTTON CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com