Solvent method high-wet-modulus bamboo fiber and preparation method thereof

一种高湿模量、竹纤维的技术，应用在纤维处理、纤维化学特征、纤维的化学后处理等方向，能够解决操作人员身体威胁、浆液质量不稳定、生产环境要求高等问题，达到无工业污染产生、利于连续染色、尺寸稳定性好的效果

Active Publication Date: 2010-04-14
SHANGHAI LYOCELL FIBER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Chinese invention patent application publication CN1190531C discloses a kind of production method of solvent-based bamboo cellulose fiber, there are following defects in its technological method: 1, the volume of polymerization kettle is at 5-300 liters, according to the routine, 5-300 liters volumetric polymerization kettle, does not belong to the category of industrialized production; 2, the prior art lists the "pulp dehydration" step, the dehydration time is as long as 8 hours, which is time-consuming and energy-consuming
[0008] Chinese Invention Patent Application Publication CN1760412A discloses a production method of solvent-based regenerated bamboo fiber cellulose, but has the following defects: 1. The production process is complicated, such as hydrolysis, acidolysis, enzymolysis, etc. in the pulp pretreatment process three processes
Moreover, a large amount of industrial wastewater will be generated due to hydrolysis and acidolysis during the pretreatment process.
2. The technical solution lacks a pre-dissolution process, which will cause unstable slurry quality
[0009] Chinese Invention Patent Application Publication CN1851115A discloses a method for directly manufacturing regenerated bamboo fiber from paper-making grade bamboo pulp. Demanding while posing a potential physical threat to the operator

Method used

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  • Solvent method high-wet-modulus bamboo fiber and preparation method thereof

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preparation example Construction

[0047] A kind of preparation method of solvent method high wet modulus bamboo fiber is made up of following steps:

[0048] (1) activation

[0049] The activation process is simple, less chemical reagents are added, and the whole process only takes about 1 hour, which is short in time and easy to operate. details as follows:

[0050] Deploy process water → add pulp → adjust PH value → add cellulase → terminate activation Deploy process water: use deionized water;

[0051] Parameters: Conductivity2 , PH value: 6-8, temperature: 50°C

[0052] Adding Pulp: Bamboo Pulp

[0053] Parameters: polymerization degree 400-1000

[0054] Adjust PH value: adjust with acid and alkali

[0055] Parameters: PH value 4-6

[0056] Add Cellulase: Liquid Cellulase

[0057] Parameters: Name CelluPract Product No. IPL 5B06610, Supplier BIOPRACT

[0058] Termination of activation: adding alkali to adjust the pH value

[0059] Parameters: PH value 10-13

[0060] (2) Squeeze

[0061] After ...

Embodiment 1

[0086] Cotton type fiber:

[0087] Add bamboo pulp with a degree of polymerization of 500 until the conductivity is less than 5μs / cm 2 , PH value: 6.8, temperature: 50 ℃ process water, adjust the PH value at 4.5, 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 squeezing, control the water mass percentage of water cellulose to 45%, pulverize it into 3cm×3cm particles, add an aqueous solution containing 78% by mass of N-methylmorpholine-N-oxide, wherein water cellulose and N- The mass ratio of the aqueous solution of methylmorpholine-N-oxide is 1:4 to make the pulp swell, the outlet temperature is 70°C, the composition of the pre-dissolved pulp: cellulose 11.5%, pH value 9.5, the mixed solution after passing through the pre-dissolver After entering the dissolving machine, control the vacuum degree to 5.0kpa, and the slurry comp...

Embodiment 2

[0090] Medium and long fibers:

[0091] Add bamboo pulp with a degree of polymerization of 550 until the conductivity is less than 5μs / cm 2 , PH value: 6.0, temperature: 50 ℃ process water, adjust the PH value at 4.2, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the PH value at 12, terminate the activated pulp porridge, and vacuum After dehydration and pressing, control the water mass percentage of water cellulose to 55%, pulverize it into 3cm×3cm particles, add an aqueous solution containing 85% by mass of N-methylmorpholine-N-oxide, wherein water cellulose and N -The mass ratio of the aqueous solution of methylmorpholine-N-oxide is 1:3 to make the pulp swell, the outlet temperature is 68°C, the composition of the predissolved pulp: cellulose 9.5%, pH value 9.0, mixed after the predissolver After the liquid enters the dissolving machine, the vacuum degree is controlled to 7.0kpa, and the slurry composition: cellulose 11.2%....

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Abstract

The invention discloses a solvent method high-wet-modulus bamboo fiber and a preparation method thereof. The preparation method of the bamboo fiber comprises the following steps: activation, adding bamboo pulp into deionized water, adjusting the pH value, adding cellulase for activation, and then adding alkali to adjust the pH value; squeezing, vacuum dewatering and squeezing; pre-dissolving, adding water solution containing 50-88% of N-methyl morpholine-N-oxide; dissolving, entering a dissolving machine, heating, vacuumizing, dehydrating, dissolving, homogenizing and defoaming; spinning, spraying through a spinneret plate, and molding by adopting a dry wet spinning; washing; whitening; oiling; and drying. The preparation method has simple operation, no industrial pollution, low energy consumption and high safety performance, and is applicable to manufacturing the solvent method bamboo fiber by large-scale industrialized continuous production; furthermore, the bamboo fiber prepared by the method not only maintains the natural physical and chemical properties of the bamboo fiber, but also generates no harmful chemical residue and has higher wet modulus.

Description

technical field [0001] The invention relates to a bamboo fiber and a preparation method thereof, in particular to a solvent method high wet modulus 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. [0004] The application of bamboo fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01D5/00
CPCD01F2/00D01D5/04D01C1/00
Inventor 姜琨王晓亮朱长丽王新郑殿海
Owner SHANGHAI LYOCELL FIBER DEV
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