CN110484976A - A kind of preparation method of the high branch textile fabric of pure ramee - Google Patents
A kind of preparation method of the high branch textile fabric of pure ramee Download PDFInfo
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- CN110484976A CN110484976A CN201910785282.3A CN201910785282A CN110484976A CN 110484976 A CN110484976 A CN 110484976A CN 201910785282 A CN201910785282 A CN 201910785282A CN 110484976 A CN110484976 A CN 110484976A
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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
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Abstract
The present invention relates to a kind of preparation methods of pure high branch textile fabric of ramee, comprising: 1) presoaks: ramie raw ramie being immersed in the prepreg solution containing sodium hydroxide and is presoaked, taking-up is dehydrated to obtain prepreg；2) gained prepreg progress steam blasting steam explosion: is obtained into steam explosion material；3) kiering: gained steam explosion material is placed in heat preservation kiering in degumming liquid and obtains kiering material；4) ultrasound washes fiber crops: gained kiering material being placed in water ultrasound and embathes to obtain washing material；5) ramee is post-processed to obtain；6) it spins: ramie cylinder yarn is made in gained ramee；7) weave: warp yarn count is not less than 100Nm, and weft yarn number is not less than 80Nm, and weaving is made.The high branch textile fabric mechanical property of gained is good, and quality is frivolous, anti-shrinkage；Breathable moisture permeability with higher perspires conducive to moisture absorption air ventilation；Human body sense organ is soft, fine and smooth, and contact skin feel is comfortably smooth, and no prodding and itching feeling, taking is strong, is suitble to be processed into high-grade clothing or high-grade home textile articles.
Description
Technical field
The invention belongs to technical field of textile fabric, and in particular to a kind of preparation side of the pure high branch textile fabric of ramee
Method.
Background technique
Ramie is a kind of distinctive representative natural ramie fiber in China, resourceful, is very suitable to be processed into high-grade weaving
Fabric.Compared to general natural fiber such as cotton fiber, wool etc., ramee is more elongated, and initial modulus is big, quality is light, inhales
It is wet that dissipate wet and gas permeability more excellent；It, can since containing structures such as pyrimidine, purine, ramee has significant antibacterial action
Inhibit staphylococcus aureus, Pseudomonas aeruginosa, the bacterial growths such as Escherichia coli, make ramie fabric have excellent anti-corrosion, antibacterial,
Mildew resistance is a kind of high added value textile raw material with health care effect.With mentioning for social progress and living standard
Height, clothes and home textile market are developed towards green, free of contamination direction, and people's wears dress ornament, home-textile by chemical fiber plus material
Switch to increasingly pursue natural fabric material.Ramie fabric texture is light and handy, ventilated, quick-drying washable, moisture absorbing and sweat releasing, antibacterial are protected
It is strong, it is suitble to be processed into high-grade clothing or household textiles, has a vast market space.
Ramie harvesting after, hemp skin is stripped from straw, then scrape off green peel from hemp skin and obtain ramie phloem, after drying at
For the raw material of ramie textile, referred to as raw ramie.Raw ramie contains 70% or so cellulose, and chemical composition in addition to this mainly has fruit
Glue, hemicellulose, lignin and a small amount of fatty wax and ash content etc., are referred to as colloid；Colloid is enclosed in the appearance of fiber, glue
All single fibers are closed, keeps fiber cemented together in firm piece strip, assigns fiber stiffness.Therefore it to obtain spinnable
Ramee, it is necessary to remove colloid, release fiber and make it in single fiber discrete state, be required with reaching weaving, this process is known as
Degumming.The method of ramee degumming mainly has: local method, physicomechanical processes, bioanalysis and chemical method.Local method is civil manual work
The method that skill is spread is not suitable for industrialized production.Physicomechanical processes are by means of the physical mechanical power of special mechanical equipment and auxiliary
Processing is helped, degumming, fibrillation and arrangement are carried out, exclusive use is difficult to reach good degumming effect.Bioanalysis is to utilize microorganism
(such as degumming bacterium, the zymogenic bacteria by screening) or enzyme (such as pectase, hemicellulase, lignin-degrading enzymes), to ramie colloid
Macromolecular is decomposed to realize degumming, but since the vigor of microorganism or enzyme preparation is too low, degumming is inefficient, degumming matter
Amount be also unable to satisfy industrial requirement, also rest on the experimental stage at present, can not large-scale application in industrial production.
Currently, China grass degumming is industrially most widely used or chemical method；The basic principle of chemical Degumming is to utilize
The hydrolysis oxidation effect of acid, alkali and oxidant, destroys the colloid macromolecular in raw ramie, is allowed to small point that becomes energy pass into solution
Son, to separate, remove gum components in raw ramie.Traditional ramie chemical Degumming is divided into three phases: pretreatment, lye boil
Experienced and post-processing stages, the technical process of comparative maturity is: raw ramie is unpacked a binding → pickling → washing → time kiering → washing
→ secondary kiering → beat fine and washing (→ bleaching) → pickling → washing → dehydration (→ concise → washing) → oil supply → dehydration →
Drying.Above-mentioned technique can make the degumming effect of ramie reach the requirement of general caused by spinning industrial production, but usually time is long, degumming
Rate is not high, cannot sufficiently discharge number particularly with high branch ramie raw materials, and gained ramee number is low, fiber is thick and stiff, can only
It is thick and more coarse to produce low and middle-grade textiles, the matter such as conventional ramie yarn and the cloth of 7.5Nm-36Nm, it is difficult to spin frivolous height
Branch yarn, surcharge are little.
Therefore, how to develop a kind of preparation method of high branch textile fabric ramee, improve ramee number and
Pliability is problem to be solved to obtain high branch, frivolous ramie textile fabric.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of pure high branch textile fabric of ramee, the high branch ramie of gained is spun
Knitted fabric quality is frivolous, and intensity is high, breathable moisture permeability is strong, and taking is good.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
A kind of preparation method of the high branch textile fabric of pure ramee, includes the following steps:
1) it presoaks: ramie raw ramie being immersed in the prepreg solution that naoh concentration is 16.0-20.0g/L and presoaks 20-
30min, rear dehydration to water content of taking out is 45%-50%, obtains prepreg；
2) steam explosion: prepreg obtained by step 1) being placed in steam blasting device and carries out steam blasting, vapor (steam) temperature 200
DEG C -210 DEG C, burst pressure 3.0-3.2MPa, heat-insulation pressure keeping 3.0-4.5min, release discharges to obtain steam explosion material；
3) kiering: steam explosion material obtained by step 2) is placed in heat preservation kiering 20-30min in degumming liquid, takes out to obtain kiering material afterwards；
The degumming liquid includes the component of following concentration: sodium hydroxide 8.0-10.0g/L, sodium sulfite 1.5-2.0g/L, sodium metasilicate
1.5-2.0g/L, sodium tripolyphosphate 2.0-2.5g/L, neopelex 1.0-1.5g/L, surplus are water；
4) ultrasound washes fiber crops: kiering material obtained by step 3) is placed in 50 DEG C of -60 DEG C of water, ultrasound embathes 10-15min, after take
It is rinsed out to neutrality, is dehydrated to obtain washing material；
5) it post-processes: washing material obtained by step 4) is subjected to oil supply, de-oiled water, dry ramee；
6) spin: by ramee obtained by step 5) successively carry out softening dewing, heap storage, comb fiber crops, it is pre- simultaneously, combing, grilling
Ramie cylinder yarn is made in drafting, dry-spinning rove, wet spinning spun yarn, automatic winding；
7) it weaves: taking ramie cylinder yarn obtained by step 6) respectively as warp thread and weft yarn, warp yarn count is not less than 100Nm, latitude
Yarn count is not less than 80Nm, and warp thread is weaved after warping, sizing, denting with weft yarn, and high branch textile fabric is made.
In step 1), the bath raio of the preimpregnation is 1:(3.0-4.0).
In above-mentioned preparation method, the bursting charge drawn off from steam blasting device is directly entered the kiering dress for filling degumming liquid
Set middle carry out kiering, interval time≤2min.
In step 3), the temperature of the heat preservation kiering is not less than 90 DEG C；The bath raio of the heat preservation kiering is 1:(10-12).
In step 4), the supersonic frequency that the ultrasound is embathed is 30-40kHz；The bath raio that the ultrasound is embathed is 1:(5.0-
6.0)。
In step 5), the oil supply is immersed washing material obtained by step 4) in the emulsion of oil-containing, bath raio 1:(8.0-
10.0), temperature is 80 DEG C -90 DEG C, time 20-30min.
In step 5), the de-oiled water is dehydrated using centrifugal drier, until moisture content is lower than 55%；It is described dry
Dry is to use to dry 15-20min in dryer under the conditions of 80 DEG C -95 DEG C.
In step 6), the fibre length of control combing ramie stripes is 110-130mm, the short fine rate lower than 40mm 1.0% with
Under, fiber runner rate is below 0.05%.
In step 7), the temperature of the sizing is 75 DEG C -80 DEG C, and drying room temperature is 95 DEG C -105 DEG C, rate of sizing 10%-
14%.
In step 7), the woven warp count is not less than 370/10cm, and weft count is not less than 326/10cm.
It is dense to be first immersed in sodium hydroxide by the preparation method of the high branch textile fabric of pure ramee of the invention for ramie raw ramie
20-30min is presoaked in the prepreg solution that degree is 16.0-20.0g/L, wetting, absorption, diffusion occur between lye and raw ramie,
So that lye is sufficiently infiltrated ramie raw ramie, and softens it；By drying and dewatering, most of sodium hydroxide enters steaming with prepreg
Steam explosion breaking device carries out steam blasting, carries out alkaline process steam explosion.By preimpregnation softening, it is straight to can avoid dry raw ramie in advance for ramie raw ramie
Fiber is excessively ground into powder when connecing steam blasting.
The present invention is operated using alkaline process steam explosion, and vapor (steam) temperature is 200 DEG C -210 DEG C, burst pressure 3.0-3.2MPa, is protected
Warm pressure maintaining 3.0-4.5min, during steam is tieed up and pressed, solution, steam carry alkali composition rapid osmotic and enter in raw ramie fiber
Portion touches hemicellulose and lignin in hemicellulose, pectin and the secondary wall in primary wall, and colloid hydrolyzes, fine
Dimension swelling.Under high-temperature and high-pressure conditions, the rapid reaction of alkali composition and lignin is carried out, lignin macromolecular fast degradation and take off
Out, and the hemicellulose being attached thereto is promoted to accelerate dissolution, pectin dissolution, colloid macromolecular is destroyed, glued declines
Even disappear, colloid and fiber separation.Since the heat-insulation pressure keeping time is short, excessive water can't occur for raw ramie main component cellulose
Solution, does not influence the structure and intensity of ramee.After heat-insulation pressure keeping, steam blasting device moment release discharging, due to pressure
Power discharges suddenly, temperature quickly reduces, and the secondary steam which generates makes the raw ramie of wetting that explosion occur, due to losing glue
The glued effect of matter macromolecular, fibre structure tearing, ramee separation refinement, single fiber sufficiently discharge.
The preparation method of the high branch textile fabric of pure ramee of the invention, gained steam explosion material is placed directly in degumming liquid
Kiering 20-30min is kept the temperature, the degumming liquid is by water and sodium hydroxide, sodium sulfite, sodium metasilicate, sodium tripolyphosphate, dodecane
Base benzene sulfonic acid sodium salt composition.It is directly entered in the kiering device for fill degumming liquid and carries out from the bursting charge drawn off in steam blasting device
Kiering, the effect of kiering herein are will to dissolve out through the loose colloidal substance of steam blasting and fiber separation, are prevented because of low temperature again
Precipitating and condensation.In degumming liquid used, sodium hydroxide further with colloid macromolecular reaction, reduces fiber surface residue glue；12
Sodium alkyl benzene sulfonate high temperature resistant, soil release performance are good, have good emulsifying capacity and permeability, contact with ramee surface, promote
It is detached from into colloidal substance from fiber surface；Sodium tripolyphosphate and sodium metasilicate dispersibility and peptizing power are strong, can promote colloid
Substance dispersion is suspended in liquid；Sodium sulfite is used as stabilizer, and neopelex protection fiber is assisted to reduce
Damage improves fiber quality.Since steam blasting has destroyed the glued construction of colloid and fiber, degumming liquid is mainly risen herein
Stripping, short time kiering can be fully dissolved out colloidal substance, achieve the purpose that separate colloidal substance.
The preparation method of the high branch textile fabric of pure ramee of the invention, is placed in 50 for gained kiering material after kiering
In DEG C -60 DEG C of water, ultrasound embathes 10-15min, rear to take out rinsing to neutrality, is dehydrated to obtain washing material；Pass through ultrasonic vibration and cavitation
Effect, breaks up the coalescence of fiber fines, displaces fibre gap and the residue glue on surface and remaining degumming liquid ingredient by water, reaches
The purpose of further degumming and cleaning.
The preparation method of the high branch textile fabric of pure ramee of the invention, the residual gum content of gained ramee reach
1.20% hereinafter, residue glue is few, and degumming rate is high；Fibre count is high, reaches 2655Nm or more, fills the fibrinogen of high branch ramie raw ramie
Divide release；Since the time of steam blasting and kiering is short, can't excess destruction ramee cellulosic structure, loss of strength
It is small.From fiber appearance, the color of gained ramee and degumming are uniform, and fiber softening is loose, lump, half-cooked, red root pole
It is few；Spot, greasy dirt, iron rust, impurity, breaking are few.The top-quality product rate of gained ramee reaches 93.54% or more, and quality is high,
Soft fluffy, suitable for the high branch of production, frivolous ramie textile fabric.
The preparation method of the high branch textile fabric of pure ramee of the invention, above-mentioned gained ramee is spinned, is knitted
It makes and high branch textile fabric is made.Through detecting, plain weave, specification are 160Nm × 128Nm/442 root/10cm × 394 piece/10cm
Above-mentioned high branch textile fabric, grammes per square metre is in 73-76g/cm2In range.The high branch textile fabric through reaching to ultimate strength
187.40N or more, broadwise ultimate strength is in 164.21N or more, through to Tear strength, in 29.62N or more, broadwise Tear strength exists
21.55N or more, far beyond the index request of ramie textile fabric Grade A；The high branch textile fabric through to washing shrinkage-
Within 2.13, broadwise washing shrinkage is within -0.20.The suspended coefficient of the high branch textile fabric of gained 75% or so, it is more smooth,
It is elegant；Gas permeability is in 2204.8L/ (m2S) more than, penetrability is in 15133.5g/ (m2More than for 24 hours).Testing result shows
For the high branch textile fabric of gained of the invention in lower grammes per square metre, mechanical property is good, and high mechanical strength, quality is frivolous, anti-shrinkage,
Resistance to dress；The high branch textile fabric breathable moisture permeability with higher of gained, perspires conducive to moisture absorption air ventilation, quick-drying washable；People
Body-sensing sees soft, exquisiteness, and contact skin feel is comfortably smooth, and no prodding and itching feeling, taking is strong, is suitble to be processed into high-grade clothing or family
Spin articles.
Specific embodiment
The present invention is described further With reference to embodiment.
In specific embodiment, ramie raw ramie used be ramie polyploid (Tri-1) high branch kind (fibre count >=
2500Nm), percentage of impurity≤0.1%, attached shell rate≤0.01%, no mildew phenomena；It using preceding solution bundle, shakes up, is not necessarily to binding.
In specific embodiment, prepreg solution is prepared: prepreg solution is made by the sodium hydroxide of formula ratio is soluble in water.
It prepares degumming liquid: aqueous solution is made by the sodium hydroxide of formula ratio is soluble in water, adds the sulfurous acid of formula ratio
Degumming liquid is made to being uniformly dispersed in sodium, sodium metasilicate, sodium tripolyphosphate and neopelex, stirring.
In specific embodiment, oil emulsion used is grouped as by the group of following mass content: soybean oil 50%, oleic acid 5%,
Triethanolamine 2.5%, surplus are water.Emulsion used in oil supply is that 3.5kg oil emulsion is added by water per ton to mix in post-processing step
Conjunction is made.Emulsion used in softening dewing is to be mixed and made into oil emulsion and water according to the mass ratio of 1:4, and emulsion dosage is
The 6% of ramee quality.
In specific embodiment, the fibre length of control combing ramie stripes is 110-130mm, and the short fine rate lower than 40mm exists
1.0% hereinafter, fiber runner rate below 0.05%.
In specific embodiment, the formula of sizing slurry therewith are as follows: PVA-1799 18.5kg, NY05 converted starch
62.5kg, softening agent (NF-15 soft lubricant) 2kg, glycerol 1kg；Solid content of sizing mixing is 10%.The temperature of sizing is 80 DEG C,
Drying room temperature is 105 DEG C, the rate of sizing 12%.
Embodiment 1
The preparation method of the high branch textile fabric of the pure ramee of the present embodiment, includes the following steps:
1) presoak: the ratio for being 1:3.0 according to bath raio, it is 20.0g/L's that ramie raw ramie, which is immersed in naoh concentration,
20min is presoaked in prepreg solution, rear drying and dewatering to water content of taking out is 50%, obtains prepreg；
2) steam explosion: prepreg obtained by step 1) being placed in steam blasting device and carries out steam blasting, vapor (steam) temperature 200
DEG C, burst pressure 3.2MPa, heat-insulation pressure keeping 4.0min, release discharge to obtain steam explosion material；
3) kiering: according to bath raio be 1:10 ratio, the steam explosion material that step 2) is drawn off from steam blasting device directly (
Every time≤2min) it is fitted into the kiering device for fill degumming liquid and carries out kiering, 95 DEG C of heat preservation kiering 30min take out to boil afterwards
Practice material；
The degumming liquid includes the component of following concentration: sodium hydroxide 10.0g/L, sodium sulfite 1.5g/L, sodium metasilicate
2.0g/L, sodium tripolyphosphate 2.0g/L, neopelex 1.5g/L, surplus are water；
4) ultrasound washes fiber crops: kiering material obtained by step 3) is placed in 60 DEG C of hot water, In by the ratio for being 1:6.0 according to bath raio
Embathe 15min under the conditions of 30kHz frequency ultrasound, rear take out is in neutrality with the pH value that a small amount of water is rinsed to fiber again, using from
Core type dewaterer is dehydrated, until moisture content is lower than 55%, obtains washing material；
5) post-process: the ratio for being 1:8.0 according to bath raio immerses washing material obtained by step 4) in emulsion, at 85 DEG C
Under the conditions of dipping 30min carry out oil supply, rear taking-up carries out de-oiled water with centrifugal drier, until moisture content is lower than 53%, then sets
15min is dried under the conditions of 90 DEG C in dryer to get ramee；
6) spin: by ramee obtained by step 5) successively carry out softening dewing, heap storage, comb fiber crops, it is pre- simultaneously, combing, grilling
Ramie cylinder yarn is made in drafting, dry-spinning rove, wet spinning spun yarn, automatic winding；
7) it weaves: taking ramie cylinder yarn obtained by step 6) respectively as warp thread and weft yarn, warp yarn count 160Nm, weft yarn branch
Number is 128Nm, and warp thread is weaved after warping, sizing, denting with weft yarn, and warp count is 442/10cm, and weft yarn is close
Degree is 394/10cm, and high branch textile fabric is made.
Embodiment 2
The preparation method of the high branch textile fabric of the pure ramee of the present embodiment, includes the following steps:
1) presoak: the ratio for being 1:3.5 according to bath raio, it is 18.0g/L's that ramie raw ramie, which is immersed in naoh concentration,
25min is presoaked in prepreg solution, rear drying and dewatering to water content of taking out is 50%, obtains prepreg；
2) steam explosion: prepreg obtained by step 1) being placed in steam blasting device and carries out steam blasting, vapor (steam) temperature 210
DEG C, burst pressure 3.0MPa, heat-insulation pressure keeping 3.5min, release discharge to obtain steam explosion material；
3) kiering: according to bath raio be 1:11 ratio, the steam explosion material that step 2) is drawn off from steam blasting device directly (
Every time≤2min) it is fitted into the kiering device for fill degumming liquid and carries out kiering, 95 DEG C of heat preservation kiering 25min take out to boil afterwards
Practice material；
The degumming liquid includes the component of following concentration: sodium hydroxide 9.0g/L, sodium sulfite 2.0g/L, sodium metasilicate
1.5g/L, sodium tripolyphosphate 2.5g/L, neopelex 1.0g/L, surplus are water；
4) ultrasound washes fiber crops: kiering material obtained by step 3) is placed in 50 DEG C of hot water, In by the ratio for being 1:5.0 according to bath raio
Embathe 15min under the conditions of 40kHz frequency ultrasound, rear take out is in neutrality with the pH value that a small amount of water is rinsed to fiber again, using from
Core type dewaterer is dehydrated, until moisture content is lower than 55%, obtains washing material；
5) post-process: the ratio for being 1:8.0 according to bath raio immerses washing material obtained by step 4) in emulsion, at 85 DEG C
Under the conditions of dipping 30min carry out oil supply, rear taking-up carries out de-oiled water with centrifugal drier, until moisture content is lower than 53%, then sets
15min is dried under the conditions of 90 DEG C in dryer to get ramee；
6) spin: by ramee obtained by step 5) successively carry out softening dewing, heap storage, comb fiber crops, it is pre- simultaneously, combing, grilling
Ramie cylinder yarn is made in drafting, dry-spinning rove, wet spinning spun yarn, automatic winding；
7) it weaves: taking ramie cylinder yarn obtained by step 6) respectively as warp thread and weft yarn, warp yarn count 160Nm, weft yarn branch
Number is 128Nm, and warp thread is weaved after warping, sizing, denting with weft yarn, and warp count is 442/10cm, and weft yarn is close
Degree is 394/10cm, and high branch textile fabric is made.
Embodiment 3
The preparation method of the high branch textile fabric of the pure ramee of the present embodiment, includes the following steps:
1) presoak: the ratio for being 1:4.0 according to bath raio, it is 16.0g/L's that ramie raw ramie, which is immersed in naoh concentration,
30min is presoaked in prepreg solution, rear drying and dewatering to water content of taking out is 50%, obtains prepreg；
2) steam explosion: prepreg obtained by step 1) being placed in steam blasting device and carries out steam blasting, vapor (steam) temperature 205
DEG C, burst pressure 3.1MPa, heat-insulation pressure keeping 4.5min, release discharge to obtain steam explosion material；
3) kiering: according to bath raio be 1:12 ratio, the steam explosion material that step 2) is drawn off from steam blasting device directly (
Every time≤2min) it is fitted into the kiering device for fill degumming liquid and carries out kiering, 95 DEG C of heat preservation kiering 20min take out to boil afterwards
Practice material；
The degumming liquid includes the component of following concentration: sodium hydroxide 8.0g/L, sodium sulfite 1.8g/L, sodium metasilicate
1.7g/L, sodium tripolyphosphate 2.3g/L, neopelex 1.2g/L, surplus are water；
4) ultrasound washes fiber crops: kiering material obtained by step 3) is placed in 55 DEG C of hot water, In by the ratio for being 1:5.5 according to bath raio
Embathe 10min under the conditions of 35kHz frequency ultrasound, rear take out is in neutrality with the pH value that a small amount of water is rinsed to fiber again, using from
Core type dewaterer is dehydrated, until moisture content is lower than 55%, obtains washing material；
5) post-process: the ratio for being 1:8.0 according to bath raio immerses washing material obtained by step 4) in emulsion, at 85 DEG C
Under the conditions of dipping 30min carry out oil supply, rear taking-up carries out de-oiled water with centrifugal drier, until moisture content is lower than 53%, then sets
15min is dried under the conditions of 90 DEG C in dryer to get ramee；
6) spin: by ramee obtained by step 5) successively carry out softening dewing, heap storage, comb fiber crops, it is pre- simultaneously, combing, grilling
Ramie cylinder yarn is made in drafting, dry-spinning rove, wet spinning spun yarn, automatic winding；
7) it weaves: taking ramie cylinder yarn obtained by step 6) respectively as warp thread and weft yarn, warp yarn count 160Nm, weft yarn branch
Number is 128Nm, and warp thread is weaved after warping, sizing, denting with weft yarn, and warp count is 442/10cm, and weft yarn is close
Degree is 394/10cm, and high branch textile fabric is made.
Experimental example 1
This experimental example detects ramee obtained by embodiment 1-3.Detection method is referring to " GB/T20793-2006 ramie
Numb degummed ramie ", the results are shown in Table 1.
Ramee quality measurements obtained by 1 embodiment 1-3 of table
As it can be seen from table 1 the number of ramee obtained by embodiment 1-3 is respectively 2673Nm, 2655Nm and 2680Nm,
Residual gum content is divided into 1.14%, 1.20% and 1.12%.The experimental results showed that high branch textile fabric ramee of the invention
Preparation method, the residual gum content of gained ramee reach 1.20% hereinafter, residue glue is few, and degumming rate is high；Fibre count is high, reaches
2655Nm or more illustrates that the fibrinogen of high branch ramie raw ramie sufficiently discharges.
Meanwhile the bundle fiber breaking strength of ramee obtained by embodiment 1-3 is respectively 5.78cN/dtex, 5.82cN/
Dtex and 5.66cN/dtex, the significantly larger than quality requirement of ramee.The experimental results showed that high branch woven face of the invention
Material use ramee preparation method, since the time of steam blasting and kiering is short, can't excess destruction ramee fibre
Plain structure is tieed up, loss of strength is small.From fiber appearance, the color of gained ramee and degumming are uniform, and fiber softening is loose,
Lump, half-cooked, red root is few；Spot, greasy dirt, iron rust, impurity, breaking are few.It is calculated through detection, the first-class of gained ramee
Product rate reaches 93.54% or more, and quality is high, soft fluffy, suitable for the high branch of production, frivolous ramie textile fabric.
Experimental example 2
This experimental example detects the quality of high branch textile fabric obtained by embodiment 1-3.Detection method and technical indicator
With reference to " FZ-T 33002-2014 ramie grey cloth ", the results are shown in Table 2.
High branch textile fabric quality measurements obtained by 2 embodiment 1-3 of table
From table 2 it can be seen that high branch textile fabric obtained by embodiment 1-3 is plain weave, specification is 160Nm × 128Nm/
442/10cm × 394 piece/10cm, grammes per square metre is in 73-76g/cm2In range.Through detecting, the high branch textile fabric through to fracture
Strength reaches 187.40N or more, and broadwise ultimate strength is in 164.21N or more, through to Tear strength, in 29.62N or more, broadwise is torn
Strength is split in 21.55N or more, far beyond the index request of ramie textile fabric Grade A；The high branch textile fabric through to
Washing shrinkage is within -2.13, and broadwise washing shrinkage is within -0.20.The experimental results showed that pure ramee Gao Zhifang of the invention
The preparation method of knitted fabric, for the high branch textile fabric of gained in lower grammes per square metre, mechanical property is good, high mechanical strength, quality
It is frivolous, anti-shrinkage, resistance to dress.
Meanwhile the suspended coefficient of high branch textile fabric obtained by embodiment 1-3 is 75% or so, it is more smooth, elegant；It is ventilative
Property is in 2204.8L/ (m2S) more than, penetrability is in 15133.5g/ (m2More than for 24 hours).The experimental results showed that of the invention is pure
The preparation method of the high branch textile fabric of ramee, the high branch textile fabric breathable moisture permeability with higher of gained are conducive to moisture absorption
Air ventilation perspires, quick-drying washable；Human body sense organ quality is frivolous, soft, fine and smooth, and contact skin feel is comfortably smooth, without scratchy
Sense, taking is strong, is suitble to be processed into high-grade clothing or high-grade home textile articles.
Claims (7)
1. a kind of preparation method of the high branch textile fabric of pure ramee, characterized by the following steps:
1) it presoaks: ramie raw ramie being immersed in the prepreg solution that naoh concentration is 16.0-20.0g/L and presoaks 20-30min,
Taking out dehydration to water content afterwards is 45%-50%, obtains prepreg；
2) steam explosion: prepreg obtained by step 1) being placed in steam blasting device and carries out steam blasting, and vapor (steam) temperature is 200 DEG C-
210 DEG C, burst pressure 3.0-3.2MPa, heat-insulation pressure keeping 3.0-4.5min, release discharges to obtain steam explosion material；
3) kiering: steam explosion material obtained by step 2) is placed in heat preservation kiering 20-30min in degumming liquid, takes out to obtain kiering material afterwards；It is described
Degumming liquid includes the component of following concentration: sodium hydroxide 8.0-10.0g/L, sodium sulfite 1.5-2.0g/L, sodium metasilicate 1.5-
2.0g/L, sodium tripolyphosphate 2.0-2.5g/L, neopelex 1.0-1.5g/L, surplus are water；
4) ultrasound washes fiber crops: kiering material obtained by step 3) being placed in 50 DEG C of -60 DEG C of water, ultrasound embathes 10-15min, rear to take out drift
It is washed till neutrality, is dehydrated to obtain washing material；
5) it post-processes: washing material obtained by step 4) is subjected to oil supply, de-oiled water, dry ramee；
6) spin: by ramee obtained by step 5) successively carry out softening dewing, heap storage, comb fiber crops, it is pre- simultaneously, combing, grilling drafting,
Ramie cylinder yarn is made in dry-spinning rove, wet spinning spun yarn, automatic winding；
7) it weaves: taking ramie cylinder yarn obtained by step 6) respectively as warp thread and weft yarn, warp yarn count is not less than 100Nm, weft yarn branch
Number is not less than 80Nm, and warp thread is weaved after warping, sizing, denting with weft yarn, and high branch textile fabric is made.
2. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 1)
In, the bath raio of the preimpregnation is 1:(3.0-4.0).
3. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 3)
In, the temperature of the heat preservation kiering is not less than 90 DEG C；The bath raio of the heat preservation kiering is 1:(10-12).
4. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 4)
In, the supersonic frequency that the ultrasound is embathed is 30-40kHz；The bath raio that the ultrasound is embathed is 1:(5.0-6.0).
5. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 6)
In, the fibre length of control combing ramie stripes is 110-130mm, and the short fine rate lower than 40mm is 1.0% hereinafter, fiber runner rate exists
0.05% or less.
6. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 7)
In, the temperature of the sizing is 75 DEG C -80 DEG C, and drying room temperature is 95 DEG C -105 DEG C, rate of sizing 10%-14%.
7. the preparation method of the high branch textile fabric of pure ramee according to claim 1, it is characterised in that: step 7)
In, the woven warp count is not less than 370/10cm, and weft count is not less than 326/10cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113882159A (en) * | 2021-10-27 | 2022-01-04 | 浙江吉麻良丝新材料股份有限公司 | High-comfort hemp fabric pretreatment process |
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