CN106868605A - A kind of preparation technology of sisal fiber - Google Patents
A kind of preparation technology of sisal fiber Download PDFInfo
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- CN106868605A CN106868605A CN201710114275.1A CN201710114275A CN106868605A CN 106868605 A CN106868605 A CN 106868605A CN 201710114275 A CN201710114275 A CN 201710114275A CN 106868605 A CN106868605 A CN 106868605A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
- D01B1/00—Mechanical separation of fibres from plant material, e.g. seeds, leaves, stalks
- D01B1/10—Separating vegetable fibres from stalks or leaves
- D01B1/14—Breaking or scutching, e.g. of flax; Decorticating
- D01B1/22—Breaking or scutching, e.g. of flax; Decorticating with crushing or breaking rollers or plates
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
- D01C1/02—Treatment of vegetable material by chemical methods to obtain bast fibres
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C1/00—Treatment of vegetable material
- D01C1/04—Bacteriological retting
Abstract
The invention belongs to technical field of textile processing, and in particular to a kind of preparation technology of sisal fiber.Degumming tech step include pretreatment, Corona discharge Treatment, ultrasonic vibration, fungi degradation, decontamination, twice ultrasonic, wash, press dry, oil supply, setting and dry.A kind of degumming tech of sisal hemp of the present invention is using Corona discharge Treatment, ultrasound, fungi degradation and twice ultrasonic treatment sisal fiber, effect is better than traditional, single chemical degumming law and mechanical degluing method, residual gum content and content of lignin are relatively low, meet the process requirements of sisal hemp deep processing.The present invention does not use other chemical reagent in addition to acetic acid and a small amount of NaOH in addition, and pollutant effluents discharge is less, is a kind of process of relative environmental protection.
Description
【Technical field】
The present invention relates to technical field of textile processing, and in particular to a kind of preparation technology of sisal fiber.
【Background technology】
Sisal hemp (scientific name：Agave sisalana Perr.ex Engelm.) also known as pineapple fibre, Agavaceae Agave,
It is a kind of perennial tropical hard leaf fibre crop, its original Mexico, now mainly in the ground such as Africa, Latin America, Asia kind
Plant, be a kind of maximum, the widest in area hard fibre of world today's consumption.Sisal hemp is that China shows unique characteristics the raw material of advantage, tool
There is fiber more long, strong but pliable in texture, springiness, pulling force is strong, and tear-proof is corrosion-resistant, low temperature resistant, all has under dry and wet environment
The advantages of retractility is little, so manufactured hawser by naval ship application, the inner layer of tire of aircraft automobile, including machine biography
Band is sent, the rope heart in crane lifting rope cable wire is also to have used a kind of material in sisal fiber.But sisal fiber is due to tissue
Middle impurity content diversity, the complexity of cellulose aggregated structure and with crystallinity high, make sisal fiber to reagent
Accessibility is low, dissolving difficult, reactivity worth and chemical reaction homogeneity it is poor, the presence that these are not enough directly affects sisal hemp fibre
The deep processing of dimension, greatly limit the application of sisal fiber, therefore need to carry out degumming process to sisal hemp.
Sisal fiber is made up of cellulose, lignin, the big constituent of hemicellulose three, and wherein cellulose components content is high
Up to more than 60%, remaining is mostly hemicellulose, lignin and pectin, and these materials are enclosed in fiber appearance mostly,
, with around cellulose, in network structure, pectin is mutually cemented together by the impurity such as hemicellulose and cellulose for hemicellulose.
Therefore, in the process of refinement of sisal hemp, degumming is basic and crucial operation, and the quality of degumming effect directly influences fibre
The yield and quality of dimension, and then have influence on deep processing.
Current degumming major way mainly has traditional pond Process of retting flax with, chemical degumming law, enzymatic degumming, the quick-fried method of sudden strain of a muscle etc.,
But the single degumming mode of most of selections, has that residual gum content is high or chemical levels excessively pollute.
Corona discharge refers to local self-maintained discharge of the gas medium in non-uniform electric field, is that a kind of most common gas is put
Electric form.Near the point electrode of radius of curvature very little, the ionization field intensity of gas is exceeded due to local electric field strength, make gas
Generation is ionized and encouraged, thus corona discharge is occurred and drawn；During generation corona, in surrounding them it can be seen that light, and with whistling
Hiss.Corona discharge can be the early stage during metastable discharge type, or non-uniform electric field gap breakdown
Developing stage.Corona discharge degumming is exactly using high energy electron, the free radical isoreactivity example produced after gas ionization and excitation
Colloid effect with flaxen fiber, makes colloid molecule decompose in a short time, and follow-up various reactions occurs to have reached
The purpose of degumming.
【The content of the invention】
Goal of the invention of the invention is：For fracture strength after sisal hemp degumming in the prior art is low, residual gum content is high, and
Chemical reagent uses the excessive deficiency for polluting environment, there is provided a kind of preparation technology of sisal fiber.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：12%- is used after the fresh sisal leaves gathered in are shakeout and are put into roller repeatedly, rolled completely
Soak at room temperature 40-60min in 15% acetate solution, finally rinses to PH=6-7 the sisal leaves clear water after immersion, dries,
Obtain cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 15-30s, the treatment
Voltage be 4-10kv, the temperature for the treatment of is 30-100 DEG C；
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:3-
5 are put into NaOH solution, ultrasonic vibration 1-1.5 hours, and the mass concentration of NaOH is 8-12g/L, NaOH in the NaOH solution
Solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into Mixed Microbes solution and submerge fermentation 3-3.5 hours, fungi degradation temperature
Spend is 28-34 DEG C；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:It is molten that 3-7 is put into NaOH
In liquid, ultrasonic vibration 1-1.5 hours, the mass concentration of NaOH was 8-12g/L in the NaOH solution, and NaOH solution temperature is less than
Equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Numb essence fiber.
Further, finger is rolled in the step (1) completely to roll fresh sisal leaves to not water outlet and be defined.
Further, high-voltage corona discharge area treatment 20-25s is put into, the voltage of the treatment is 6-8kv, the temperature for the treatment of
Spend is 60-70 DEG C.
Further, supersonic frequency is 30-35KHz in step (3), and ultrasonic power is 3500-4000W.
Further, supersonic frequency is 60-80KHz in step (6), and ultrasonic power is 6000-7000W.
Further, Mixed Microbes solution described in step (5) is divided into A type Mixed Microbes solution and the species of B Mixed Microbes solution two
Type, the A types Mixed Microbes solution contains the material of following mass concentration：Golden spore exhibition tooth lead fungi concentration is that 5-9g/L and whiterot fungi are dense
It is 8-20g/L to spend；The Type B Mixed Microbes solution contains the material of following mass concentration：Golden spore exhibition tooth lead fungi concentration is 5-9g/
L and bacillus subtilis bacteria concentration are 6-12g/L.
Further, fungi degradation temperature described in step (5) is 30-32 DEG C.
Further, the PH=4-6.5 of the A types Mixed Microbes solution, the PH=6.5-8.5 of the Type B Mixed Microbes solution.
Cal rolling pretreatment is carried out to sisal leaves, is capable of the fibrous elasticity of preliminarily softened sisal leaves.By sword harl
Arrangement understands that sisal fiber is in fascicular texture, is bonded by colloid between single fiber in bundle fiber, single fiber marshalling, tight
It is close.Sisal hemp bundle fiber is made up of many single fibers, therefore sisal fiber good toughness, and intensity is high, by cal rolling, can destroy fibre
The solid structure of dimension, soften sisal fiber, while will be bonded in fiber peripheral colloid extruding rupture and it is exposed outside, conveniently enter
One step contacts removal colloid with other chemistry, biological substance.As a kind of catalyst in sisal hemp course of reaction, it can drop for acid
The activation energy of low glucoside key, thus accelerate hydrolysis rate, the purpose of the compositions such as softening fibre, pectin is reached, same profit after acid soak
In the further degumming of sisal hemp.
It is the corrasion produced to sisal fiber using corona, by sisal fiber table using Corona discharge Treatment sisal hemp
Face weak boundary part removes, and sisal fiber surface is produced fluctuating, roughening, and has the fracture of key, forms free radical.Meanwhile,
Corona discharge increased the specific surface area of sisal fiber, realizes fiber and is separated with pectin while being introduced into hydroxyl, carboxyl, ring
A large amount of hydrophilic radicals such as epoxide, peroxide, make sisal fiber surface active, and this will effectively improve sisal hemp bundle fiber surface
The performance such as wetting, bonding, contribute to the processing works such as ferment treatment, washing.
Further is made to sisal fiber using the whiterot fungi of a certain amount of concentration, withered bacillus subtilis, golden spore exhibition tooth lead fungi
Fungi degradation degumming process.Wherein whiterot fungi is belonging to the fungi of Basidiomycotina, is gained the name because rotten timber is white, and being can
One of microorganism for timber main component of degrading.Using lignin component in whiterot fungi removal sisal hemp in the present invention, in fungi degradation mistake
Most of sisal fiber still keeps complete in journey, and cellulose crystallity change is little, has protection well to sisal fiber
Effect.Withered bacillus subtilis is one kind of bacillus, and available protein, various sugar and starch decompose tryptophan shape
Into indoles.The growth reproduction speed is cultivated under optimum conditions fast, can produce the biology enzymes such as pectase and zytase,
Can be with the glial response in sisal hemp.The golden spore exhibition tooth lead fungi equally effect with lignin degrading, lignin molecule is that a class contains
There is the high molecular polymer of phenolic hydroxyl group, its composition is formed by connecting by ehter bond and carbon-to-carbon singly-bound by benzene oxide unit.Lignin
Peroxidase is one of key enzyme of lignin degradation, and golden spore exhibition tooth lead fungi contains lignin peroxidase by fermentation
Enzyme, the enzyme belongs to oxidoreducing enzyme, can redox lignin different type aromatic compound, be degraded into small point
Son, reaches the purpose of lignin degrading.
When the principle of described ultrasonication is that high-strength ultrasonic is propagated in a liquid, intensifying for energy can be produced
And burst, i.e., ultrasonic " cavitation effect ", it can discharge huge energy, can produce the up to hundreds of local winks of atmospheric pressure
Between pressure, form shock wave, the surface of solids and liquid medium is subject to great impulsive force and mechanical " destruction " effect.The present invention
In before sisal hemp fungi degradation using lower frequency ultrasonication, can by concussion make sisal fiber stronger with peripheral adhesive power
Colloid produce loosening, but the concussion mode cannot be deep into the discreet portions such as the micropore of sisal fiber, gap, therefore by enzyme
Solution, impact are rubbed rear a large amount of bulk colloids and are come off, and produce larger gap between exposed fiber and surrounding residual colloid, now
The shock wave penetration capacity produced using the ultrasonication of upper frequency is strong, can remove the discreet portions such as micropore, gap and deposit
Colloid, can more fully by remain in the fibre colloid concussion come off, make sisal hemp degumming more thorough.
In sum, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the present invention uses Corona discharge Treatment sisal fiber, and its surface is made under the overall performance for not changing fibrous material
Structure and chemical composition change, make sisal fiber surface active, coarse, be easy to further degumming；Shaken by ultrasound again
It is dynamic to replace degumming with fungi degradation fiber, sisal fiber is produced with colloid by ultrasonic mechanical vibration and loosen or gap, by bacterium
Remnants are attached to solution the ingredient degradations such as lignin, the pectin around cellulose, and being combined by three can make sisal hemp degumming
Rate is improved, residual gum content reduction, also improves the toughness of sisal fiber, facilitates the deep processing of sisal fiber.
2. process that sisal fiber speed is fast, the time is short, scope is wide using corona mode, and it is simple to operate, easily controllable；It is de-
Only with acetic acid and a small amount of naoh treatment, using relatively fewer, waste liquid row is few, environmental pollution for chemical reagent for glue process
It is few, it is a Degumming method for relative environmental protection.
【Specific embodiment】
Further describe the present invention referring to specific embodiment, the scope of the present invention it is not restricted with it is of the invention
Embodiment.
Embodiment 1
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 60min in 12% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 20s, the treatment
Voltage is 8kv, and the temperature for the treatment of is 60 DEG C.
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:3
It is put into NaOH solution, is 30KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1 hour, the NaOH solution under 4000W
The mass concentration of middle NaOH is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into A type Mixed Microbes solution and submerge fermentation 3 hours, fungi degradation temperature
It is 32 DEG C, wherein, the concentration of golden spore exhibition tooth lead fungi is 5g/L, and white rot bacteria concentration is 8g/L, the PH=4 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:3 are put into NaOH solution
In, it is 60KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1 hour, the quality of NaOH in the NaOH solution under 7000W
Concentration is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Numb essence fiber.
Embodiment 2
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 50min in 13% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 23s, the treatment
Voltage is 7kv, and the temperature for the treatment of is 65 DEG C.
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:4
It is put into NaOH solution, is 33KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.3 hours under 3700W, and the NaOH is molten
The mass concentration of NaOH is 10g/L in liquid, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into A type Mixed Microbes solution and submerge fermentation 3.3 hours, fungi degradation temperature
It is 30 DEG C to spend, wherein, the concentration of golden spore exhibition tooth lead fungi is 7g/L, and white rot bacteria concentration is 14g/L, the PH=5 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:4 are put into NaOH solution
In, it is 70KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.3 hours, the matter of NaOH in the NaOH solution under 6500W
Amount concentration is 10g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Numb essence fiber.
Embodiment 3
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 40min in 15% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 25s, the treatment
Voltage is 6kv, and the temperature for the treatment of is 70 DEG C；
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:5
It is put into NaOH solution, is 35KHz in supersonic frequency, ultrasonic power is 3500W ultrasonic vibrations 1.5 hours, the NaOH solution
The mass concentration of middle NaOH is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into A type Mixed Microbes solution and submerge fermentation 3.5 hours, fungi degradation temperature
It is 28 DEG C to spend, wherein, the concentration of golden spore exhibition tooth lead fungi is 9g/L, and white rot bacteria concentration is 20g/L, the PH=6.5 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:5 are put into NaOH solution
In, it is 80KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.5 hours, the matter of NaOH in the NaOH solution under 6000W
Amount concentration is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Fiber crops
Further, high-voltage corona discharge area treatment 20-25s is put into, the voltage of the treatment is 6-8kv, the temperature for the treatment of
Spend is 60-70 DEG C.
Embodiment 4
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 60min in 12% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 20s, the treatment
Voltage is 8kv, and the temperature for the treatment of is 60 DEG C.
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:3
It is put into NaOH solution, is 30KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1 hour, the NaOH solution under 4000W
The mass concentration of middle NaOH is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into Type B Mixed Microbes solution and submerge fermentation 3 hours, fungi degradation temperature
It is 32 DEG C, wherein, the concentration of golden spore exhibition tooth lead fungi is 5g/L, and bacillus subtilis bacteria concentration is 6g/L, the PH=6.5 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:3 are put into NaOH solution
In, it is 60KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1 hour, the quality of NaOH in the NaOH solution under 7000W
Concentration is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Numb essence fiber.
Embodiment 5
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 50min in 13% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 23s, the treatment
Voltage is 7kv, and the temperature for the treatment of is 65 DEG C.
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:4
It is put into NaOH solution, is 33KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.3 hours under 3700W, and the NaOH is molten
The mass concentration of NaOH is 10g/L in liquid, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into Type B Mixed Microbes solution and submerge fermentation 3.3 hours, fungi degradation temperature
It is 30 DEG C to spend, wherein, the concentration of golden spore exhibition tooth lead fungi is 7g/L, and bacillus subtilis bacteria concentration is 9g/L, the PH=7.5 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:4 are put into NaOH solution
In, it is 70KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.3 hours, the matter of NaOH in the NaOH solution under 6500W
Amount concentration is 10g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Numb essence fiber.
Embodiment 6
A kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：The fresh sisal leaves gathered in are shakeout and are put into roller and is rolled to not water outlet repeatedly, completely
With soak at room temperature 40min in 15% acetate solution, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dried, obtained
To cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 25s, the treatment
Voltage is 6kv, and the temperature for the treatment of is 70 DEG C；
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:5
It is put into NaOH solution, is 35KHz in supersonic frequency, ultrasonic power is 3500W ultrasonic vibrations 1.5 hours, the NaOH solution
The mass concentration of middle NaOH is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into A type Mixed Microbes solution and submerge fermentation 3.5 hours, fungi degradation temperature
It is 28 DEG C to spend, wherein, the concentration of golden spore exhibition tooth lead fungi is 9g/L, and bacillus subtilis bacteria concentration is 12g/L, the PH=8.5 of solution；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sword
The impurity such as the pectin in sesame slices, dry, and obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:5 are put into NaOH solution
In, it is 80KHz in supersonic frequency, ultrasonic power is ultrasonic vibration 1.5 hours, the matter of NaOH in the NaOH solution under 6000W
Amount concentration is 12g/L, and NaOH solution temperature is less than or equal to 50 DEG C；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sword
Fiber crops
Further, high-voltage corona discharge area treatment 20-25s is put into, the voltage of the treatment is 6-8kv, the temperature for the treatment of
Spend is 60-70 DEG C.
Comparative example 1
Degumming is carried out according to the method for embodiment 1, but does not carry out Corona discharge Treatment, other condition steps are identical.
Comparative example 2
Degumming is carried out according to the method for embodiment 1, but does not carry out fungi degradation treatment, other condition steps are identical.
Comparative example 3
Degumming is carried out according to the method for embodiment 1, wherein not carrying out ultrasonically treated, other condition steps are identical.
According to the method for the embodiment of the present invention 1 and existing single chemical degumming law, mechanical degluing method, enzyme method for degumming and contrast
Example 1, comparative example 2, comparative example 3 are contrasted, and the degumming situation of sisal fiber is as follows：
As can be seen from the above table, it is de- that the sisal fiber fracture strength that Degumming method of the present invention is obtained is above single chemistry
The fiber that glue method, mechanical degluing method, enzyme method for degumming are obtained, residual gum content is minimum in four kinds of degumming modes, the fibre that the present invention is obtained
Dimension slightly attenuates, and color bleaches.And understand to omit any of which step and replacement with the contrast of comparative example 1, comparative example 2 and comparative example 3
Sisal hemp degumming can not be set to reach degumming effect of the invention.It is of the invention main using corona, ultrasound, enzymolysis, ultrasonic in combination work
Skill degumming, effectively gets rid of the gum components contained in sisal fiber, can effectively improve the intensity of fiber, while can carry
High chroma
Described above is directed to the detailed description of preferably possible embodiments of the invention, but embodiment is not limited to this hair
Bright patent claim, the equal change completed under the technical spirit suggested by all present invention or modification change, all should belong to
Cover the scope of the claims in the present invention.
Claims (8)
1. a kind of preparation technology of sisal fiber, it is characterised in that comprise the following steps：
(1) pre-process：12%-15% is used after the fresh sisal leaves gathered in are shakeout and are put into roller repeatedly, rolled completely
Acetate solution in soak at room temperature 40-60min, finally the sisal leaves clear water after immersion is rinsed to PH=6-7, dry, obtain
Cleaning sisal leaves；
(2) Corona discharge Treatment：The sisal fiber that will be dried is put into high-voltage corona discharge area treatment 15-30s, the electricity of the treatment
It is 4-10kv to press, and the temperature for the treatment of is 30-100 DEG C；
(3) ultrasonic vibration：The sisal leaves after Corona discharge Treatment are taken, is 1 by the mass ratio of sisal leaves and NaOH solution:3-7 is put
Enter in NaOH solution, ultrasonic vibration 1-1.5 hours, the mass concentration of NaOH was 8-12g/L, NaOH solution in the NaOH solution
Temperature is less than or equal to 50 DEG C；
(4) fungi degradation：Sisal leaves after ultrasonic vibration are put into Mixed Microbes solution and submerge fermentation 3-3.5 hours, fungi degradation temperature is
28-34℃；
(5) decontamination：Sisal leaves after fungi degradation are taken out and carry out impact and is rubbed, then washed away with clear water and be attached to the sisal leaves
On the impurity such as pectin, dry, obtain sisal fiber；
(6) twice ultrasonic：Sisal fiber is taken, is 1 by the mass ratio of sisal fiber and NaOH solution:3-5 is put into NaOH solution,
Ultrasonic vibration 1-1.5 hours, the mass concentration of NaOH was 8-12g/L in the NaOH solution, and NaOH solution temperature is less than or equal to
50℃；
(7) by the clear water wash clean of the sisal fiber after twice ultrasonic, then press dry, oil supply, sizing, drying, obtain sisal hemp essence
Fiber.
2. the preparation technology of a kind of sisal fiber according to claim 1, it is characterised in that：In the step (1) completely
Finger is rolled to roll fresh sisal leaves to not water outlet and be defined.
3. the preparation technology of a kind of sisal fiber according to claim 1, it is characterised in that：It is put into high-voltage corona discharge area
Treatment 20-25s, the voltage of the treatment is 6-8kv, and the temperature for the treatment of is 60-70 DEG C.
4. the preparation technology of a kind of sisal fiber according to claim 1, it is characterised in that：Supersonic frequency in step (3)
It is 30-35KHz, ultrasonic power is 3500-4000W.
5. the preparation technology of a kind of sisal fiber according to claim 1, it is characterised in that：Supersonic frequency in step (6)
It is 60-80KHz, ultrasonic power is 6000-7000W.
6. the combination degumming technique of a kind of sisal hemp according to claim 1, it is characterised in that：Mix described in step (5)
Bacterium solution is divided into A type Mixed Microbes solution and B Mixed Microbes solution two types, and it is dense that the A types Mixed Microbes solution contains following quality
The material of degree：Golden spore exhibition tooth lead fungi concentration is 5-9g/L and white rot bacteria concentration is 8-20g/L；The Type B Mixed Microbes solution contains
The material of following mass concentration：Golden spore exhibition tooth lead fungi concentration is 6-12g/L for 5-9g/L and bacillus subtilis bacteria concentration.
7. the combination degumming technique of a kind of sisal hemp according to claim 6, it is characterised in that：Fungi degradation described in step (5)
Temperature is 30-32 DEG C.
8. the combination degumming technique of a kind of sisal hemp according to claim 6, it is characterised in that：The A types Mixed Microbes solution
PH=4-6.5, the PH=6.5-8.5 of the Type B Mixed Microbes solution.
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| CN107354786A (en) * | 2017-07-19 | 2017-11-17 | 广西师范学院 | Sisal hemp footwear rope |
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| CN101575741A (en) * | 2008-05-07 | 2009-11-11 | 东华大学 | Method for preparing viscose fiber by sisal leaves |
| CN101294309B (en) * | 2008-05-26 | 2010-08-11 | 东华大学 | Process for producing sisal fiber |
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