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

Solvent-process high-wet-modulus fine-denier bamboo fibers and preparation method thereof

A high wet modulus, bamboo fiber technology, applied in fiber treatment, rayon in cellulose solution, filament molding treatment, etc., can solve problems such as inability to produce solvent-based fibers

Pending Publication Date: 2021-03-12
SHANGHAI LYOCELL FIBER DEV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current solvent-based preparation process is only suitable for producing solvent-based bamboo fibers above 1.56dtex, and cannot produce fine-denier solvent-based fibers

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
  • Solvent-process high-wet-modulus fine-denier bamboo fibers and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Add bamboo pulp with a degree of polymerization of 650 until the conductivity is less than 5μs / cm 2 , pH value: 6.5, temperature: 50°C process water, adjust the pH value at 5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the pH value to 10.5, and the pulp porridge after the activation is terminated is vacuum dehydrated After pressing, control the water mass percentage of water cellulose to 49%, crush it into 3cm*3cm particles, add 82% N-methylmorpholine-N-oxide aqueous solution, wherein water cellulose and N-methylmorpholine The mass ratio of the morphine-N-oxide aqueous solution is 1:3.9 to make the pulp swell, the outlet temperature is 75°C, the composition of the pre-dissolved pulp: 11.8% cellulose, pH 9.8, the mixed solution after the pre-dissolver enters the dissolver, Control vacuum degree 5kpa, slurry composition: cellulose 13.7%.

[0057] The slurry is transported by a booster pump, sprayed out through a spinn...

Embodiment 2

[0059] Add bamboo pulp with a degree of polymerization of 700 until the conductivity is 2 , pH value: 6.8, temperature: 50 ℃ process water, adjust the pH value at 5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the pH value at 10.7, and the pulp porridge after the activation is terminated is vacuum dehydrated After pressing, control the water mass percentage of water cellulose to 48%, crush it into 3cm*3cm particles, add 81% N-methylmorpholine-N-oxide aqueous solution, wherein water cellulose and N-methylmorpholine The mass ratio of the morphine-N-oxide aqueous solution is 1:4 to make the pulp swell, the outlet temperature is 70°C, the composition of the pre-dissolved pulp: cellulose 11.8%, pH9.8, the mixed solution after the pre-dissolving machine enters the dissolving machine , control vacuum degree 6.0kpa, slurry composition: cellulose 13.8%.

[0060] The slurry is conveyed by a booster pump, sprayed out through a spinnere...

Embodiment 3

[0062] Add bamboo pulp with a degree of polymerization of 750 until the conductivity is less than 5μs / cm 2 , pH value: 6.8, temperature: 50 ℃ process water, adjust the pH value at 5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the pH value at 11, and the pulp porridge after the activation is terminated is vacuum dehydrated After pressing, control the water mass percentage of water cellulose to 50%, crush it into 3cm*3cm particles, add 83% N-methylmorpholine-N-oxide aqueous solution, wherein water cellulose and N-methylmorpholine The mass ratio of the morphine-N-oxide aqueous solution is 1:3.8 to make the pulp swell, the outlet temperature is 70°C, the composition of the pre-dissolved pulp: cellulose 11.8%, pH9.8, the mixed solution after the pre-dissolver enters the dissolver , control vacuum degree 6.5kpa, slurry composition: cellulose 13.8%.

[0063] The slurry is transported through a booster pump, sprayed out through a ...

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
degree of polymerizationaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of textiles, in particular to solvent-process high-wet-modulus fine-denier bamboo fibers and a preparation method thereof. The preparation method comprisesthe following steps of performing activation: adding bamboo pulp with the polymerization degree of 600-1200 into deionized water, adjusting the pH value, adding cellulase for activation, and adding alkali for adjusting the pH value; performing squeezing: performing vacuum dehydration squeezing; performing pre-dissolving: adding an aqueous solution containing 65-86% by mass of N-methylmorpholine-N-oxide; performing dissolving: entering dissolving equipment, performing heating, vacuumizing, dewatering, dissolving, homogenizing and defoaming; performing filtration; performing spinning: performing spinning and forming by adopting a dry-wet process; performing washing with water; performing bleaching; performing oiling; and performing drying. The preparation method is easy to operate, free ofindustrial pollution, low in energy consumption, high in safety performance and suitable for large-scale industrial continuous production of the solvent-process fine-denier bamboo fibers; and the fineness of the prepared fine-denier bamboo fibers is 0.95-1.08 dtex, the wet modulus is larger than 18.0 CN / dtex, the natural physical and chemical properties of the fine-denier bamboo fibers are reserved, no harmful chemical residues exist, and the wet modulus is relatively high.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a solvent-processed high-wet modulus fine-denier bamboo fiber and a preparation method thereof. Background technique [0002] Bamboo fiber products are unique because of their high-tech content, silky, soft and warm, cool and comfortable, antibacterial and antibacterial, green and environmental protection, and natural health care. [0003] The natural antibacterial, antibacterial and anti-ultraviolet effects of bamboo fiber fabric can still maintain its original characteristics after repeated washing and sun exposure. It is also different from other fabrics that add antibacterial agents, anti-ultraviolet agents and other finishing agents in the post-treatment, so it will not cause any allergic adverse reactions to human skin, but has health care and bactericidal effects on human skin. Skin care products with a wide range of applications. Therefore, the application of bamboo fi...

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): D01F2/02D01D1/00D01D5/088D01D5/00D06L4/13
CPCD01F2/02D01D1/00D01D5/088D01D5/00D06L4/13
Inventor 王晓亮孙继蒋毅吴庆军余亮袁飚陈欢
Owner SHANGHAI LYOCELL FIBER DEV
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