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

Technology for preparing viscose fiber from pulp with low polymeric degree

A technology of viscose fiber and low polymerization degree is applied in the field of preparing viscose fiber by using pulp with low polymerization degree, which can solve the problems of insufficient polymerization degree and can not further reduce the polymerization degree of pulp, and achieve the effect of good quality

Inactive Publication Date: 2019-06-21
阿拉尔市中泰纺织科技有限公司 +1
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of viscose fiber, reducing the degree of polymerization of pulp is an important indicator, which directly determines the quality of the final viscose fiber. In the existing technology, the traditional method is usually used to determine the degree of polymerization of pulp. The reduction of the degree of polymerization of the pulp has not been able to further reduce
In the existing patents, ultrasonic waves are used to reduce the degree of polymerization, but for viscose fibers with high quality requirements, the reduced degree of polymerization is far from enough

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
  • Technology for preparing viscose fiber from pulp with low polymeric degree
  • Technology for preparing viscose fiber from pulp with low polymeric degree
  • Technology for preparing viscose fiber from pulp with low polymeric degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of technology that utilizes pulp of low degree of polymerization to prepare viscose fiber, comprises the following steps:

[0035] A, get 1000kg cotton pulp as raw material, carry out alkali dipping treatment, described alkali liquor is the sodium hydroxide solution that concentration is 75g / L, and alkali liquor temperature is 81 ℃, and dipping time is 50min;

[0036] B, the pulp impregnated with alkali in step A is processed by ultrasonic wave, the power of ultrasonic wave is 2.2KW, the frequency of ultrasonic wave is 40KHz, and the time of ultrasonic treatment is 1.2h;

[0037] C, adding 20kg cellulase and 60kg potassium periodate to the pulp after ultrasonic treatment in step B successively, after stirring at 2300r / min for 4min, obtain alkali cellulose after squeezing, and the pressure of the squeezing is 150mbar;

[0038] D. The alkali cellulose in step C is pulverized to a degree of pulverization of 70, and then the alkali cellulose is passed through oxygen ...

Embodiment 2

[0047] A kind of technology that utilizes pulp of low degree of polymerization to prepare viscose fiber, comprises the following steps:

[0048] A, get 1000kg cotton pulp as raw material, carry out alkali dipping treatment, described alkali liquor is the sodium hydroxide solution that concentration is 75g / L, and alkali liquor temperature is 81 ℃, and dipping time is 50min;

[0049] B, the pulp impregnated with alkali in step A is processed by ultrasonic wave, the power of ultrasonic wave is 2.2KW, the frequency of ultrasonic wave is 40KHz, and the time of ultrasonic treatment is 1.2h;

[0050]C, adding 22kg cellulase and 57kg potassium periodate to the pulp after ultrasonic treatment in step B successively, after stirring at 2300r / min for 4min, obtain alkali cellulose after squeezing, and the pressure of the squeezing is 150mbar;

[0051] D. The alkali cellulose in step C is pulverized to a degree of pulverization of 70, and then the alkali cellulose is passed through oxygen f...

Embodiment 3

[0060] A kind of technology that utilizes pulp of low degree of polymerization to prepare viscose fiber, comprises the following steps:

[0061] A, get 1000kg cotton pulp as raw material, carry out alkali dipping treatment, described alkali liquor is the sodium hydroxide solution that concentration is 75g / L, and alkali liquor temperature is 81 ℃, and dipping time is 50min;

[0062] B, the pulp impregnated with alkali in step A is processed by ultrasonic wave, the power of ultrasonic wave is 2.2KW, the frequency of ultrasonic wave is 40KHz, and the time of ultrasonic treatment is 1.2h;

[0063] C, adding 19kg cellulase and 63kg potassium periodate to the pulp after ultrasonic treatment in step B successively, after stirring at 2300r / min for 4min, obtain alkali cellulose after squeezing, and the pressure of the squeezing is 150mbar;

[0064] D. The alkali cellulose in step C is pulverized to a degree of pulverization of 70, and then the alkali cellulose is passed through oxygen ...

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
Dry elongation at breakaaaaaaaaaa
Dry strength coefficient of variationaaaaaaaaaa
Dry elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a technology for preparing viscose fiber from pulp with the low polymeric degree, and belongs to the field of production methods of viscose fiber. The technology comprises thesteps that firstly, pulp is adopted as a raw material for performing alkali dipping, then, ultrasonic treatment is performed, then, cellulase and potassium periodate are sequentially added and stirred, then, squeezing is performed, then, oxygen and carbon disulfide are introduced, pulp yellowing is performed, and cellulose sulfonate is obtained. The cellulose sulfonate is dissolved into an alkalisolution to obtain viscose, then, standing, defoaming and filtering are performed, and a pre-spinning viscose solution is obtained. After spinning is performed on the pre-spinning viscose solution, finished viscose fiber is obtained. According to the technology, due to cooperation of ultrasonic waves, cellulase and potassium periodate, the polymeric degree of pulp can be greatly lowered, good conditions are supplied to the viscose fiber with the high quality, finally, the obtained viscose fiber exceeds the standard of high-class products specified in national standards, and the quality of viscose fiber on the market is improved.

Description

technical field [0001] The invention relates to the field of production methods of viscose fibers, in particular to a process for preparing viscose fibers from pulp with a low degree of polymerization Background technique [0002] Viscose fiber, the full name of viscose fiber, is a cellulose fiber obtained by extracting and remodeling fiber molecules from natural wood cellulose using "wood" as a raw material. The hygroscopicity of viscose fiber meets the physiological requirements of human skin. It has the characteristics of smooth and cool, breathable, antistatic, anti-ultraviolet, colorful and good color fastness. It has the essence of cotton and the quality of silk. It is an authentic plant fiber, derived from nature and superior to nature. At present, it is widely used in various underwear, textile, clothing, non-woven and other fields. Pulp is the main raw material in the production of viscose fiber. It can be said that the quality of pulp directly affects the qualit...

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
IPC IPC(8): D01F2/06C08B9/00
Inventor 杨振忠王彦波王明龙詹兵冉静平余永红吴宏辉李森林桑飞雄
Owner 阿拉尔市中泰纺织科技有限公司
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