CN113930856B - Noni short fiber and preparation method thereof - Google Patents

Noni short fiber and preparation method thereof Download PDF

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Publication number
CN113930856B
CN113930856B CN202111304201.7A CN202111304201A CN113930856B CN 113930856 B CN113930856 B CN 113930856B CN 202111304201 A CN202111304201 A CN 202111304201A CN 113930856 B CN113930856 B CN 113930856B
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noni
viscose
liquid
fiber
solution
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CN113930856A (en
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黄金洪
赵志远
张静
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YIBIN HUIMEI FIBER NEW MATERIAL CO Ltd
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YIBIN HUIMEI FIBER NEW MATERIAL CO Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention provides noni short fibers and a preparation method thereof, and belongs to the field of functional cellulose fiber preparation. Taking noni fruit extract and viscose as raw materials, and preparing noni fruit short fibers after blending, spinning, solidification and post-treatment; wherein, the weight ratio of noni fruit extract is 1-40%, and the weight ratio of alpha-fiber in viscose is 60-99%. In the invention, substances in the noni fruit extract are crosslinked and solidified in the alpha-fibers in the viscose through a specific preparation process, so that the functionalization of the short fibers is realized.

Description

Noni short fiber and preparation method thereof
Technical Field
The invention relates to noni short fibers and a preparation method thereof, and belongs to the field of functional cellulose fiber preparation.
Background
The regenerated cellulose fiber is a degradable material which takes natural cellulose (such as cotton, hemp, bamboo, tree, shrub and the like) as a raw material, and active hydroxyl groups in natural cellulose molecules and a plurality of functional molecules are subjected to graft copolymerization in different production links to realize modification. Wherein, the regenerated cellulose fiber with better performance can be manufactured by only changing the physical structure of the natural cellulose without changing the chemical structure, such as: the fabric has good air permeability, good hygroscopicity, good elasticity, soft, smooth and cool hand feeling, is not easy to generate static electricity, and has soft cotton, luster of silk and smoothness of hemp; more easy to color, good color fastness and the like.
Noni is the fruit of Morinda citrifolia that has a high content of human cells (somatic cells). Noni juice has been found by experimental studies and epidemiological statistics to have various health benefits from johnny westerdoctor at the university of hamburg medical science, germany, such as: can strengthen physical ability, improve overall health condition, relieve inflammation and pain, improve sleep, improve allergic constitution, etc. Noni contains more than 150 nutrient elements such as Xeronine, active ferment, beta-carotene, nicotinic acid, protein, carbonate, folic acid, biotin, pantothenic acid, serotonin, dietary fiber, ferment, vitamin A, B group, C, D, E, K, calcium, iron, magnesium, zinc, iodine, phosphorus, copper, chromium, manganese, sulfur, sodium, potassium, selenium, germanium, molybdenum and the like.
In the prior art CN201610781630.6, fresh noni fruits are added into an ethanol water solution containing a surfactant, stirred, fully extracted and filtered to obtain noni fruit extract emulsion. The invention also provides application of the noni extract emulsion in preparing cosmetics or skin care products, and the noni extract emulsion has stronger free radical clarity and better whitening skin care effect. Wherein the surfactant comprises an ionic surfactant and a nonionic surfactant, and the ionic surfactant comprises sodium dodecyl benzene sulfonate. The CN202010936638.1 noni uniform polysaccharide extraction and separation method and application discloses application of noni uniform polysaccharide as a bioactive component for inhibiting human liver cancer cells in preparation of antitumor drugs.
Disclosure of Invention
Based on the prior art, the invention provides a method for directly converting noni fruit extract into fibers, which can be used as raw materials of clothes, masks, sanitary materials and the like, and is blended with viscose solution and the like to finally obtain noni fruit short fibers, so that the functionalization of the viscose fibers is realized, and a novel short fiber material is further developed.
In order to achieve the technical purpose, the following technical scheme is provided:
the noni short fiber is prepared by taking noni extract and viscose as raw materials and carrying out blending, spinning, solidification and post-treatment; wherein, the weight ratio of noni fruit extract is 1-40%, and the ratio of alpha-fiber in viscose is 60-99%;
the indexes of the prepared noni short fiber finished product are as follows:
the dry breaking strength is more than or equal to 2.28cN/dtex, the wet breaking strength is more than or equal to 1.00cN/dtex, the dry breaking elongation is 17+/-4.5%, the linear density deviation is +/-4%, the length deviation is +/-6%, the ultra-long fiber rate is less than or equal to 1%, the multiple length fiber is less than or equal to 20mg/100g, the residual sulfur content is less than or equal to 20mg/100g, the defect is less than or equal to 6mg/100g, the greasy yellow fiber is less than or equal to 1mg/100g, and the dry breaking strength variation coefficient CV is less than or equal to 20%.
Further, the noni content in the noni extract is more than 90%, and the alpha-fiber content in the viscose is 8.5-9.2%.
A preparation method of noni short fibers comprises the following steps:
A. preparation of noni fruit juice
1) Dissolving noni fruit extract in ethanol water solution with the temperature of 50-90 ℃ and the concentration of 1-40%; adding sodium dodecyl benzene sulfonate, fully stirring, and cooling to 30-40 ℃ to obtain a solution I;
wherein, the mass fraction of the noni fruit extract after being dissolved in the ethanol water solution is 10-50%. The noni fruit extract can be directly purchased, and the noni fruit extract comprises Xeronine, active ferment, beta-carotene, nicotin, protein, carbonate and the like. The mass fraction of the noni extract after being dissolved in the ethanol water solution is 10-50%, and the arrangement of the mass fraction ensures the smooth and stable proceeding of the subsequent procedures, such as: when the mass fraction is smaller than the mass fraction, in order to ensure the quality and the quality of the final product noni short fiber during the subsequent spinning, the noni liquid is added in a large amount, so that more water and ethanol are brought in, the viscosity of the viscose liquid is reduced, and the spinning is not facilitated; similarly, if the addition amount of noni fruit extract is too large, the viscosity of the solution is too high, and noni fruit liquid is inconvenient to mix when being added into viscose liquid, and uneven mixing is caused, so that the spinning process and the quality of noni fruit short fibers are seriously affected;
defining ethanol as a solvent, which is mainly matched with the characteristics of substances in noni extracts, ensures the solubility of the substances in noni extracts, such as: a part of the noni extract has low solubility in a simple aqueous solvent, and may be insoluble in some precipitated substances. And setting the temperature of 50-90 ℃ and the concentration of 1-40%, so as to ensure the solubility of substances in the noni fruit extract in the ethanol water solution, if the temperature is too high, the ethanol in the solution is volatilized quickly, thereby not only wasting the cost, but also reducing the concentration of the solvent ethanol in the solution, but also not reaching the theoretical solubility; the temperature is too low, so that substances in the noni fruit extract are slowly dissolved, and the period of the whole preparation process is prolonged. Therefore, the mutual coordination of the solvent ethanol, the concentration and the dissolution temperature ensures the solubility of substances in the noni extract, thereby facilitating the subsequent process;
wherein, the mass fraction of the added amount of the sodium dodecyl benzene sulfonate is 1-5%, and the mass fraction is specifically as follows: the mass fraction of sodium dodecyl benzene sulfonate in the total mixture of noni extract and ethanol. The sodium dodecyl benzene sulfonate with the mass fraction promotes the dissolution of substances in the noni fruit extract, so that the solution is dispersed, has the function of capacity enhancement, and is convenient for the dissolution of the noni fruit extract and the stabilization of the solution;
after fully stirring, the temperature is reduced to 30-40 ℃, so that the ethanol is ensured not to volatilize due to high temperature in the process of preparing the solution, and meanwhile, the material in the subsequent process is convenient to add (carried out at the temperature);
2) Adding caustic soda into the solution I obtained in the step 1), and adjusting the pH value to 8.5-9; slowly adding the cross-linking agent in 3 hours under the condition of continuously preserving heat at 30-40 ℃, and continuously stirring for 5-24 hours at the same time, so as to promote the uniform mixing of the solution I and the cross-linking agent and reduce the self-crosslinking phenomenon to obtain a solution II;
wherein the cross-linking agent is 1,4 butanediol diglycidyl ether and/or ethylene glycol diglycidyl ether; the mass fraction of the adding amount of the cross-linking agent is 1-10%, and the mass fraction specifically refers to: the mass fraction of the cross-linking agent in the added solution;
caustic soda is used as an acid-base regulator, the cost is low, the caustic soda is also a reagent commonly used in textile industry, the source is wide (can be purchased directly or can be derived from recovery in a spinning process), and the related waste liquid treatment process is mature;
regarding the adjustment of the pH value, the raw material viscose is alkaline, so that the solution I is adjusted to be alkaline (if the solution I is acidic, in the subsequent blending, the reaction of neutralization of acid and alkali affects the spinning solution and cannot be used for normal spinning), thereby ensuring the smooth and stable operation of the subsequent spinning process; in addition, the pH value is too high, and the substances such as protein, xeronine and the like in the noni fruit extract lose activity, so that the quality and the quality of the final product cannot be ensured;
the heat preservation temperature is set to be 30-40 ℃, so that the temperature is adjusted to the temperature reduction temperature in the step 1), the activity of the proteins, the xylogen and other substances in the noni fruit extract is maintained, and the volatilization of ethanol is reduced;
the addition of the cross-linking agent, when the noni fruit liquid is mixed with the viscose, most substances in the noni fruit liquid are combined with the alpha-fibers; meanwhile, in the subsequent post-treatment, the short fiber primary product is dried and then irradiated by ultraviolet rays so as to crosslink again, thereby ensuring the crosslinking effect. The noni fruit liquid is slowly added within 3 hours, so that the stirring and the uniform dispersion are convenient; meanwhile, the limitation of a feeding mode of 'slow feeding' can prevent heat release in the dissolving process and reduce self-crosslinking phenomenon;
3) Standing the obtained solution II for more than 24 hours to precipitate part of insoluble substances in the solution II, and removing insoluble substances by using a centrifuge or a filter to obtain noni fruit liquid;
B. blending
Respectively defoaming the noni fruit liquid and the viscose liquid, then carrying out static mixing, and then defoaming to obtain a blending liquid;
in static mixing, the mass ratio of noni fruit liquid is 1-40%, and the mass ratio of alpha-fiber in viscose liquid is 60-99%;
wherein, the viscose is viscose with the alpha-cellulose content of more than or equal to 85 percent, hemicellulose of less than 20g/L and average polymerization degree of 500-1000 as raw materials, and the alpha-cellulose content of the viscose is 8.5-9.2 percent;
during static mixing, the ratio of noni fruit liquid to viscose liquid is limited, so that the subsequent spinning is ensured, and the quality of a final product is ensured. Such as: if the noni fruit liquid occupies a large amount, the spinning is not facilitated, and the spinning molding is poor; if the noni fruit liquid is low, the characteristics of the obtained functional short fiber are not obvious;
C. spinning process
Two-bath wet spinning is adopted;
feeding the blending liquid into a spinning machine through a glue supply pipeline, quantitatively feeding the blending liquid by a metering pump, filtering out particle impurities by a candle filter, feeding the blending liquid into a spinneret assembly by a curved pipe, and forming viscose trickles through spinneret holes under pressure;
D. solidification and curing
And (3) solidification: solidifying and molding the viscose trickle in a coagulating bath to obtain a primary strand silk;
wherein the coagulating bath comprises 250-360g/L sodium sulfate, 80-130g/L sulfuric acid, 10-50g/L zinc sulfate and 8-25g/L auxiliary agent, the specific gravity of the coagulating bath and the viscose trickle is 1.25-1.32, the coagulating bath temperature is 40-60 ℃, and the shaping of the viscose trickle can be better ensured. The viscose spinning forming is a very intense process, where a coagulation bath is definedThe temperature is used for forming the fibers without being too severe, ensuring the fiber to be formed and facilitating CS to be produced in the reaction process 2 Can be recovered as much as possible. The temperature rise accelerates the decomposition reaction of cellulose sulfonate, so that insufficient molding is caused by too fast reaction, and meanwhile, the added noni extract cannot be effectively reserved on the fibers, so that a large amount of noni extract is lost, and the quality of a short fiber finished product cannot be ensured;
curing: after passing through a yarn guiding disc, the primary yarn is bundled and stretched in a curing bath; in the curing bath, the primary yarn is stretched and simultaneously the decomposition and regeneration process is completed, wherein the structure of the fiber is shaped and the performance is stable, and the fiber bundle is obtained;
E. post-treatment
Cutting off the obtained fiber bundles, and obtaining a noni short fiber primary product after primary acid washing, desulfurization, primary water washing, secondary acid washing, secondary water washing, oiling, dehydration and drying;
carrying out ultraviolet radiation on the obtained noni short fiber primary product to realize solidification between noni extract and fiber, thus obtaining a noni short fiber finished product;
the noni extract and cellulose molecules can be better solidified, namely solidified and crosslinked by adopting ultraviolet radiation with the wavelength of 280-400nm for 1-10 min; simultaneously; the sterilization effect is also realized.
By adopting the technical scheme, the beneficial technical effects brought are as follows:
1) The invention takes noni fruit extract and viscose as raw materials, and the noni fruit short fiber is prepared by blending, spinning, solidifying and post-treatment. The indexes of the finished noni short fiber product are as follows:
the dry breaking strength is more than or equal to 2.28cN/dtex, the wet breaking strength is more than or equal to 1.00cN/dtex, the dry breaking elongation is 17+/-4.5%, the linear density deviation is +/-4%, the length deviation is +/-6%, the ultra-long fiber rate is less than or equal to 1%, the multiple length fiber is less than or equal to 20mg/100g, the residual sulfur content is less than or equal to 20mg/100g, the defects are less than or equal to 6mg/100g, the greasy yellow fiber is less than or equal to 1mg/100g, and the dry breaking strength variation coefficient CV is less than or equal to 20%;
wherein, the obtained noni short fiber has excellent functions of resisting oxidation, scavenging free radicals, whitening and the like;
2) In the invention, the prepared noni fruit liquid can be directly used as raw materials of clothes, masks, sanitary materials and the like. When the fiber is blended with viscose, the noni short fiber is finally obtained, the functionalization of the viscose is realized, and a new short fiber material is further developed;
3) In the invention, in order to be matched with the preparation process of the short fiber and ensure the quality of the product, a specific raw material noni fruit liquid (such as: the noni fruit extract contains 90% noni fruit, the solvent and its concentration, and the control conditions are the same, and the specific raw material viscose (the content of alpha-fiber in viscose is 8.5-9.2%) is selected, and the proportional relation between the two is further limited, so that the noni fruit extract is crosslinked and solidified in the alpha-fiber in viscose, to realize the functionalization of short fiber, and further ensure the stability, controllability, persistence and standardization of the functionalized fiber/silk preparation process.
Detailed Description
In the following, it is obvious that the embodiments described are only some embodiments of the present invention, but not all embodiments, by clearly and completely describing the technical solutions in the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a noni short fiber which is prepared by taking noni extract and viscose as raw materials and carrying out blending, spinning, solidification and post-treatment; wherein, the weight ratio of noni fruit extract is 1-40%, and the ratio of alpha-fiber in viscose is 60-99%;
the indexes of the prepared noni short fiber finished product are as follows:
the dry breaking strength is more than or equal to 2.28cN/dtex, the wet breaking strength is more than or equal to 1.00cN/dtex, the dry breaking elongation is 17+/-4.5%, the linear density deviation is +/-4%, the length deviation is +/-6%, the ultra-long fiber rate is less than or equal to 1%, the multiple length fiber is less than or equal to 20mg/100g, the residual sulfur content is less than or equal to 20mg/100g, the defect is less than or equal to 6mg/100g, the greasy yellow fiber is less than or equal to 1mg/100g, and the dry breaking strength variation coefficient CV is less than or equal to 20%.
Further, the noni content of noni extract is >90%.
Example 2
The embodiment provides a preparation method of noni short fibers, which comprises the following steps:
A. preparation of noni fruit juice
1) Dissolving noni fruit extract in ethanol water solution with the temperature of 50-90 ℃ and the concentration of 1-40%; adding sodium dodecyl benzene sulfonate, fully stirring, and cooling to 30-40 ℃ to obtain a solution I;
the mass fraction of the noni extract after being dissolved in the ethanol water solution is 10-50%, and the mass fraction of the sodium dodecyl benzene sulfonate added is 1-5%;
2) Adding caustic soda into the solution I obtained in the step 1), and adjusting the pH value to 8.5-9; slowly adding the cross-linking agent in 3 hours under the condition of continuously preserving heat at 30-40 ℃, and continuously stirring for 5-24 hours at the same time, so as to promote the uniform mixing of the solution I and the cross-linking agent and reduce the self-crosslinking phenomenon to obtain a solution II;
wherein the cross-linking agent is 1,4 butanediol diglycidyl ether and/or ethylene glycol diglycidyl ether; the mass fraction of the adding amount of the cross-linking agent is 1-10%;
3) Standing the obtained solution II for more than 24 hours to precipitate part of insoluble substances in the solution II, and removing insoluble substances by using a centrifuge or a filter to obtain noni fruit liquid;
B. blending
Respectively defoaming the noni fruit liquid and the viscose liquid, then carrying out static mixing, and then defoaming to obtain a blending liquid;
in static mixing, the mass ratio of noni fruit liquid is 1-40%, and the mass ratio of alpha-fiber in viscose liquid is 60-99%;
wherein the viscose is viscose with the content of alpha-fiber of 8.5-9.2 percent;
C. spinning process
Two-bath wet spinning is adopted;
feeding the blending liquid into a spinning machine through a glue supply pipeline, quantitatively feeding the blending liquid by a metering pump, filtering out particle impurities by a candle filter, feeding the blending liquid into a spinneret assembly by a curved pipe, and forming viscose trickles through spinneret holes under pressure;
D. solidification and curing
And (3) solidification: solidifying and molding the viscose trickle in a coagulating bath to obtain a primary strand silk;
wherein the coagulating bath comprises 250-360g/L sodium sulfate, 80-130g/L sulfuric acid, 10-50g/L zinc sulfate and 8-25g/L auxiliary agent, the specific gravity of the coagulating bath and the viscose trickle is 1.25-1.32, the coagulating bath temperature is 40-60 ℃, and the shaping of the viscose trickle can be better ensured. The viscose spinning forming is extremely intense, and the coagulating bath temperature is limited to ensure that the forming is not too intense, and the CS produced in the reaction process is also facilitated 2 Can be recovered as much as possible. The temperature rise accelerates the decomposition reaction of cellulose sulfonate, so that insufficient molding is caused by too fast reaction, and meanwhile, the added noni extract cannot be effectively reserved on the fibers, so that a large amount of noni extract is lost, and the quality of a short fiber finished product cannot be ensured;
curing: after passing through a yarn guiding disc, the primary yarn is bundled and stretched in a curing bath; in the curing bath, the primary yarn is stretched and simultaneously the decomposition and regeneration process is completed, wherein the structure of the fiber is shaped and the performance is stable, and the fiber bundle is obtained;
E. post-treatment
Cutting off the obtained fiber bundles, and obtaining a noni short fiber primary product after primary acid washing, desulfurization, primary water washing, secondary acid washing, secondary water washing, oiling, dehydration and drying;
and irradiating the obtained noni short fiber primary product for 1-10min by adopting ultraviolet rays with the wavelength of 280-400nm to realize the solidification between the noni extract and the fiber, so as to obtain the noni short fiber finished product.
Example 3
This example illustrates the production of 3kg of finished noni staple fiber to further illustrate the present invention.
The method specifically comprises the following steps:
A. preparation of noni fruit juice
1) Dissolving noni fruit extract in 30% ethanol water solution at 70deg.C; adding sodium dodecyl benzene sulfonate, fully stirring, and cooling to 30 ℃ to obtain a solution I;
30% of noni extract by mass after being dissolved in ethanol water solution, and 4% of sodium dodecyl benzene sulfonate by mass after being added;
2) Adding caustic soda into the solution I obtained in the step 1), and adjusting the pH value to 8.5; under the condition of continuously preserving heat at 30 ℃, slowly adding the cross-linking agent within 3 hours, and continuously stirring for 6 hours at the same time, so as to promote the uniform mixing of the solution I and the cross-linking agent and reduce the self-crosslinking phenomenon, thus obtaining a solution II;
wherein the cross-linking agent is one or two of 1, 4-butanediol diglycidyl ether and ethylene glycol diglycidyl ether; 6% of the cross-linking agent;
3) Standing the obtained solution II for more than 24 hours to precipitate part of insoluble substances in the solution II, and removing insoluble substances by using a centrifuge or a filter to obtain noni fruit liquid;
B. blending
Respectively defoaming the noni fruit liquid and the viscose liquid, then carrying out static mixing, and then defoaming to obtain a blending liquid;
in static mixing, the mass ratio of noni fruit liquid is 14%, and the mass ratio of alpha-fiber in viscose liquid is 86%;
wherein the viscose is viscose with the content of alpha-fiber of 8.5-9.2 percent;
C. spinning process
Two-bath wet spinning is adopted;
feeding the blending liquid into a spinning machine through a glue supply pipeline, quantitatively feeding the blending liquid by a metering pump, filtering out particle impurities by a candle filter, feeding the blending liquid into a spinneret assembly by a curved pipe, and forming viscose trickles through spinneret holes under pressure;
D. solidification and curing
And (3) solidification: solidifying and molding the viscose trickle in a coagulating bath to obtain a primary strand silk;
wherein the coagulating bath comprises 280g/L sodium sulfate, 100g/L sulfuric acid, 25g/L sulfurZinc acid and 12g/L auxiliary agent, the specific gravity of the coagulating bath and the viscose trickle is 1.28, the coagulating bath temperature is 55 ℃, and the shaping of the viscose trickle can be well ensured. The viscose spinning forming is extremely intense, and the coagulating bath temperature is limited to ensure that the forming is not too intense, and the CS produced in the reaction process is also facilitated 2 Can be recovered as much as possible. The temperature rise accelerates the decomposition reaction of cellulose sulfonate, so that insufficient molding is caused by too fast reaction, and meanwhile, the added noni extract cannot be effectively reserved on the fibers, so that a large amount of noni extract is lost, and the quality of a short fiber finished product cannot be ensured;
curing: after passing through a yarn guiding disc, the primary yarn is bundled and stretched in a curing bath; in the curing bath, the primary yarn is stretched and simultaneously the decomposition and regeneration process is completed, wherein the structure of the fiber is shaped and the performance is stable, and the fiber bundle is obtained;
E. post-treatment
Cutting off the obtained fiber bundles, and obtaining a noni short fiber primary product after primary acid washing, desulfurization, primary water washing, secondary acid washing, secondary water washing, oiling, dehydration and drying;
and (3) radiating the obtained noni short fiber primary product for 3min by ultraviolet rays (the wavelength is 280 nm), so as to realize the solidification between the noni extract and the fiber, and obtain 3kg of noni short fiber finished product.
Wherein, the finished product index of the noni short fiber is as follows:
dry breaking strength 2.53 cN/dtex, wet breaking strength 1.25cN/dtex, dry breaking elongation 20%, linear density deviation rate-0.8%, length deviation rate-0.35%, ultra-long fiber rate 0.3%, multiple fiber 5mg/100g, residual sulfur 13mg/100g, defect 2mg/100g, greasy yellow fiber 0mg/100g, dry breaking strength variation coefficient CV value 11%
Example 4
This embodiment differs from embodiment 3 in that:
the noni fruit liquid has a mass fraction of 15% and the rest of the process steps are the same as in example 3.
Example 5
This embodiment differs from embodiment 3 in that:
the mass fraction of the sodium dodecylbenzenesulfonate added was 2%, and the other steps were the same as in example 3.
Example 6
This embodiment differs from embodiment 3 in that:
in static mixing, the noni fruit liquid was 6% by mass and the rest of the process steps were the same as in example 3.
Example 7
This embodiment differs from embodiment 3 in that:
the mass ratio of the crosslinking agent was 2%, and the other steps were the same as in example 3.
The finished noni staple fibers obtained in examples 3-7 above were combined to give the results in Table 1 below.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.

Claims (2)

1. A method for preparing noni short fibers, which is characterized by comprising the following steps:
A. preparation of noni fruit juice
1) Dissolving noni fruit extract in ethanol water solution with the temperature of 50-90 ℃ and the concentration of 1-40%; adding sodium dodecyl benzene sulfonate, fully stirring, and cooling to 30-40 ℃ to obtain a solution I;
wherein, the noni content in the noni extract is more than or equal to 90 percent, the mass fraction of the noni extract is 10-50 percent, and the mass fraction of the sodium dodecyl benzene sulfonate is 1-5 percent;
2) Adding caustic soda into the solution I obtained in the step 1), and adjusting the pH value to 8.5-9; slowly adding the cross-linking agent in 3 hours under the condition of continuously preserving heat at 30-40 ℃, and continuously stirring for 5-24 hours to obtain a solution II;
wherein, the mass fraction of the adding amount of the cross-linking agent is 1-10%;
3) Standing the obtained solution II for more than 24 hours, and removing impurities by using a centrifuge or a filter to obtain noni fruit liquid;
B. blending
Respectively defoaming the noni fruit liquid and the viscose liquid, then carrying out static mixing, and then defoaming to obtain a blending liquid;
in static mixing, the mass ratio of noni fruit liquid is 1-40%, the mass ratio of viscose liquid is 60-99%, and the content of alpha-fiber in the viscose liquid is 8.5-9.2%;
C. spinning process
Two-bath wet spinning is adopted;
feeding the blending liquid into a spinning machine through a glue supply pipeline, quantitatively feeding the blending liquid by a metering pump, filtering out particle impurities by a candle filter, feeding the blending liquid into a spinneret assembly by a curved pipe, and forming viscose trickles through spinneret holes under pressure;
D. solidification and curing
And (3) solidification: solidifying and molding the viscose trickle in a coagulating bath to obtain a primary strand silk;
wherein the coagulating bath comprises 250-360g/L sodium sulfate, 80-130g/L sulfuric acid, 10-50g/L zinc sulfate and 8-25g/L auxiliary agent, the specific gravity of the coagulating bath and viscose trickle is 1.25-1.32, and the coagulating bath temperature is 40-60 ℃;
curing: after passing through a yarn guiding disc, the primary yarn is bundled and stretched in a curing bath; in the curing bath, the primary yarn is stretched and simultaneously the decomposition and regeneration process are completed to obtain fiber bundles;
E. post-treatment
Cutting off the obtained fiber bundles, and obtaining a noni short fiber primary product after primary acid washing, desulfurization, primary water washing, secondary acid washing, secondary water washing, oiling, dehydration and drying;
and radiating the obtained noni short fiber primary product for 1-10min by adopting ultraviolet rays with the wavelength of 280-400nm to obtain the noni short fiber finished product with the dry breaking strength of more than or equal to 2.10cN/dtex, the wet breaking strength of more than or equal to 1.10cN/dtex and the dry breaking elongation of 17-21%.
2. The preparation method of noni short fiber according to claim 1, wherein in the step 2), the crosslinking agent is 1, 4-butanediol diglycidyl ether and/or ethylene glycol diglycidyl ether.
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CN106377453A (en) * 2016-08-31 2017-02-08 郑超 Morinda citrifolia extract emulsion and preparation method and application thereof
CN111394814A (en) * 2020-04-23 2020-07-10 罗莱生活科技股份有限公司 Skin-care composite fiber and preparation method and application thereof
CN111485420A (en) * 2020-04-23 2020-08-04 罗莱生活科技股份有限公司 Skin care fiber with semi-interpenetrating network structure and preparation method and application thereof
CN111733471A (en) * 2020-04-23 2020-10-02 罗莱生活科技股份有限公司 Skin care fiber capable of slowly releasing skin care ingredients and preparation method and application thereof
CN112281231A (en) * 2020-10-26 2021-01-29 深圳千维生态纺织有限公司 Eupatilin-containing wormwood fiber capable of protecting health and preserving health and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN102971453A (en) * 2010-07-02 2013-03-13 宝洁公司 Filaments comprising a non-perfume active agent nonwoven webs and methods for making same
CN106377453A (en) * 2016-08-31 2017-02-08 郑超 Morinda citrifolia extract emulsion and preparation method and application thereof
CN111394814A (en) * 2020-04-23 2020-07-10 罗莱生活科技股份有限公司 Skin-care composite fiber and preparation method and application thereof
CN111485420A (en) * 2020-04-23 2020-08-04 罗莱生活科技股份有限公司 Skin care fiber with semi-interpenetrating network structure and preparation method and application thereof
CN111733471A (en) * 2020-04-23 2020-10-02 罗莱生活科技股份有限公司 Skin care fiber capable of slowly releasing skin care ingredients and preparation method and application thereof
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