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Method for preparing functional cellulose capable of increasing effective content of functional materials

A technology of functional substances and effective content, applied in the direction of artificial filaments made of viscose, can solve the problems of serious loss of functional materials, high interfacial energy, influence of fiber mechanical properties, etc., and achieve remarkable functional effects

Active Publication Date: 2018-02-09
YUTIAN ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method effectively improves the content of functional materials in the fiber, but it is found in practical applications that the interfacial energy between the functional material and the cellulose may be too high due to the fact that the functional material is in a dispersed state. Weaving, dyeing and finishing, etc.) The loss of functional materials is very serious, which also affects the mechanical properties of fibers

Method used

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  • Method for preparing functional cellulose capable of increasing effective content of functional materials
  • Method for preparing functional cellulose capable of increasing effective content of functional materials
  • Method for preparing functional cellulose capable of increasing effective content of functional materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A regenerated cellulose filament that increases the effective content of phase change materials is prepared by the following method:

[0049] 1) By dissolving cellulose with a degree of polymerization of 650 in an aqueous solution containing 6.15% sodium hydroxide and 8% zinc oxide by mass ratio, freezing it below -5°C, and then freezing it at no higher than 45°C (25°C) Thaw to obtain a cellulose solution;

[0050] 2) Using the cellulose solution obtained in step 1 as the continuous phase, paraffin wax (10 parts) and calcium stearate (2 parts) with a melting point of 28 ° C, diphenylmethane diisocyanate (0.6 parts), toluene diisocyanate (1.5 parts) part) as dispersed phase, and form emulsion; High-speed shearing machine 12000r / min forms emulsion;

[0051] 3) Induce the prepolymer of the above system to form a polymer at the oil-water interface of the emulsion droplet; use 0.02 parts of ethylenediamine as the initiator, and allow the system to mix uniformly for 1 minute...

Embodiment 2

[0059] A regenerated cellulose filament with improved protein effective content is prepared by the following method:

[0060] 1) By dissolving cellulose with a degree of polymerization of 550 in sodium hydroxide containing 9% (7%-10%) by mass, 0.25% (0.1%-5%) of zinc oxide in water and ionic liquid 1-formazan Base-3 butylimidazolium chloride) (wherein, the amount of water is 20%, and the ionic liquid is the balance), frozen to below -7°C, and then thawed at 40°C to obtain a cellulose solution;

[0061] 2) Use the cellulose solution obtained in step 1 as the continuous phase, and use cellulose mass ratio of 35% silk protein and 2% dispersant Span80 and PEG-grafted cellulose with a molecular weight of about 1300 (the ratio is 1: 3) as the dispersion Phase, drop the continuous phase into the dispersed phase with the phase inversion method at a rate of 0.5ml / min and form an emulsion;

[0062] 3) After the emulsion is formed, toluene diisocyanate with a cellulose mass ratio of 8.5...

Embodiment 3

[0070] A regenerated cellulose filament that increases the effective content of a thermochromic material is prepared by the following method:

[0071] 1) by bamboo cellulose, be dissolved in the sodium hydroxide that contains mass ratio 7%, in the N-methylmorpholine-N-oxide aqueous solution of 4.5% zinc oxide, be frozen to below-5 ℃, then without Thaw at a temperature higher than 40°C to obtain a cellulose solution;

[0072]2) Using the cellulose solution obtained in step 1 as the continuous phase, three-stage thermochromic pigments with critical temperatures of 50°C and 70°C, 15-25% phase-change paraffin wax and 5% cellulose mass ratio of 10-25% The dispersant styrene-maleic anhydride resin is used as the dispersed phase and forms an emulsion;

[0073] 3) During the formation of the emulsion, dropwise add 2% nano-kaolin particles and 10% melamine resin aqueous solution with cellulose mass ratio;

[0074] 4) Induce the above-mentioned system prepolymer to form a polymer at t...

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Abstract

The invention provides a method for preparing functional cellulose capable of greatly increasing the effective content of functional materials in fibers. In a cellulose material product obtained according to the method, the functional materials account for 5-60% of the relative product mass, or even more, and the proportion can generally reach 15% or above or 30% or above. The functional celluloseprepared accordingly can be greatly improved in effects, such as flame retardance, bacteriostasis, moisturizing, skin care, beauty, heat storage and release, aroma, catalysis and inhibition due to the high content of the functional materials. The method is wide in raw material source, the whole process is environmentally friendly, industrial production is performed easily, and the method can be applied to textile manufacturing, medicine, cosmetics, agriculture and other fields.

Description

technical field [0001] The invention relates to a method for preparing cellulose material, in particular to a method for preparing functional cellulose with increased effective content of functional substances, and a functional cellulose long material prepared by the method. Background technique [0002] Among all kinds of fibers, cellulose fibers are especially important. Different from fossil energy, cellulose is a renewable resource that widely exists in nature, so it plays a pivotal role in textiles, light industry, petroleum, national defense, metallurgy, biology, medicine and other fields. Compared with other spinning methods, the preparation temperature of cellulose fibers is lower and the conditions are relatively mild, which seems to be an excellent carrier of functional substances. Therefore, there have been many attempts to introduce functional materials into fiber materials. [0003] Incorporation of polyethylene glycol into hollow fibers is described in US4908...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08C08L1/02C08L33/10C08K5/101C08J5/18
CPCC08J5/18C08J2301/08C08J2433/10C08K5/101D01F2/08
Inventor 沈轲冯欢乔磊黄晓义杜兔平
Owner YUTIAN ENERGY CO LTD
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