CN107326460A - A kind of equipment for after-treatment used in the preparation method and preparation method of flocking viscose rayon - Google Patents
A kind of equipment for after-treatment used in the preparation method and preparation method of flocking viscose rayon Download PDFInfo
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- CN107326460A CN107326460A CN201710621669.6A CN201710621669A CN107326460A CN 107326460 A CN107326460 A CN 107326460A CN 201710621669 A CN201710621669 A CN 201710621669A CN 107326460 A CN107326460 A CN 107326460A
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- bath
- washing
- desulfurization
- baths
- tow
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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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses the equipment for after-treatment used in a kind of preparation method of flocking viscose rayon and preparation method, primery vascular bundle is sequentially passed through into following process step：(1) enter two baths and carry out damp and hot drawing-off, obtain sheet tow piece；(2) sheet tow piece is entered into cooling retraction bath, cooling retraction is using negative drawing-off；(3) tow piece is entered into the bath of desulfurization one after dehydration；(4) the tow piece after desulfurization one is bathed enters the bath of desulfurization two after dehydration；(5) the tow piece after desulfurization is washed through the bath of washing one, the bath of washing two and the bath of washing three successively；(6) tow piece after washing is cut off after dehydration obtains finished product tow.The equipment for after-treatment includes two baths, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two, one bath of washing, two baths of washing, three baths of washing and the cut-out packing machine set gradually.The present invention solves the residual sulfur content height that puzzlement viscose rayon exists as flocking fiber, the problems such as dyeing uneven.
Description
Technical field
The present invention relates to viscose rayon technical field, and in particular to a kind of flocking viscose rayon and equipment for after-treatment.
Background technology
In recent years, electrostatic spinning is because unique decorative effect and technique of its matte, embroidery sense are simple, cost is low, adapt to
The characteristics of property is strong, in industrially developed country, such as U.S., Italy, Germany, Japan are widely used, and product is prevailing.In recent years,
China also develops a variety of electrostatic spinning products.Electrostatic spinning has production efficiency height, cost is low, designs and varieties are more, adaptive surface
Wide the features such as, it is widely used in a variety of industries, is developed so far from shoe industry originally, cloth for building, expands to clothes, dress
Adorn numerous industries such as cloth, automotive trim, seal, stationery, toy, packing business, decoration, instrument and meter.
For the fiber of flocking, length, fiber number not only to fiber there are certain requirements, and to the conduction of flocked fiber
Property, moisture content, dispersiveness, Length Regularity, flexibility to fiber etc. have very high requirement, at present applied to clothes, decoration
The flocked fiber of the products such as cloth, also requires there is feel and good wearability of softness etc..Currently used for the fiber of flocking
Mainly there are polyamide, polyester, polyacrylonitrile and polypropylene fibre.
Viscose rayon, because having the advantages that good hand touch, moisture absorption, ventilative, dyeability are good, is the ideal original for producing implanted article
Material, simultaneously as the characteristics of its water content is big, avoids chopped fiber and fiber transverse and longitudinal lacking in a jumble occurs in use
Point, is easy to the vertical adhesion of fine hair, and neat, smooth style is presented in finished product matte.But at present, restriction viscose rayon is used as top grade
The factor of the fiber of flocked fabric has：The problems such as residual sulfur content is high, fault is high, dyeing uniformity is poor, and the matter of different batches of product
Amount uniformity stability difference is larger, therefore a kind of function admirable of exploitation, stable viscose rayon, meets the high-grade flocking production in downstream
The demand of product, it is significant.
The content of the invention
First technical problem to be solved by this invention be：In view of the deficienciess of the prior art, providing a kind of residual sulphur
The low, impurity of amount is few, the flocking viscose rayon that dyeing uniformity is good, intensity is high preparation method.
Second technical problem to be solved by this invention be：In view of the deficienciess of the prior art, providing a kind of flocking
With the equipment for after-treatment used in the preparation method of viscose rayon.
To solve above-mentioned first technical problem, the technical scheme is that：
A kind of preparation method of flocking viscose rayon, by the primery vascular bundle after coagulating bath is molded and is molded stretching
Sequentially pass through following process step：
(1) primery vascular bundle is entered into two baths and carries out damp and hot drawing-off, sheet tow piece is obtained after damp and hot drawing-off；
15~30g/L of sulfur acid in two body lotions, 98~100 DEG C of the temperature of two body lotions；
(2) the sheet tow piece is entered into cooling retraction bath, the cooling retraction bath is normal-temperature water, and cooling retraction is used
Negative drawing-off；
(3) will cool down retraction after tow piece after dehydration enter the bath of desulfurization one, desulfurization one bathe in containing sodium hydroxide 2~
8g/l；75~85 DEG C of the temperature that desulfurization one is bathed；
(4) tow piece after desulfurization one is bathed enters the bath of desulfurization two after dehydration, desulfurization two bathe in containing sodium hydroxide 1~
7g/l, 75~85 DEG C of the temperature that desulfurization two is bathed；
(5) by the tow piece after desulfurization after dehydration enter water-washing step, the water-washing step at least include washing one bath,
The bath of washing two and washing three are bathed；The temperature of the bath of washing one is 45~55 DEG C；The temperature of the bath of washing two is 30~40 DEG C；
The temperature of the bath of washing three is normal temperature；
(6) the tow piece after washing is cut off after dehydration obtains finished product tow, the water content of the finished product tow
For 45~55wt%.
As an improvement technical scheme, shaping stretching includes shower nozzle drawing-off, silk and leads drawing-off and deflector roll drawing-off；Institute
The degree of draft for stating shower nozzle drawing-off is 0~100%, and the degree of draft that the silk leads drawing-off is 1~3%；The drawing-off of the deflector roll drawing-off
Rate is 20~50%.
As a kind of perferred technical scheme, the degree of draft of the shower nozzle drawing-off is 30~60%.
As an improvement technical scheme, the bottom of two bath is provided with steam pipe, the top of the steam pipe
It is evenly equipped with venthole.
As a kind of perferred technical scheme, the steam pipe is Heat-stable steam pipe.
As a kind of perferred technical scheme, the degree of draft of the damp and hot drawing-off is 5~15%；What the cooling bounced back leads
It is -1~-5% to stretch rate.
As an improvement technical scheme, the length of two bath is 30~35m；The bath of desulfurization one and desulfurization
Two bath lengths are respectively 10~15m.
As an improvement technical scheme, the desulfurization one bathe in also containing the plain butt weight 0.01 of relative fiber~
0.1% polyalkylene glycol alkyl amine.Polyalkylene glycol alkyl amine is conducive to alkali to cellulose tow diffusion inside, infiltration, accelerates de-
Reaction of Salmon-Saxl speed, improves desulfurized effect, and the cellulose tow product solved in the market exists when being used as flocked fiber
The residual too high problem of sulphur.
As an improvement technical scheme, the washing one contains alkylolamides, the consumption of alkylolamides in bathing
For the 0.01~0.05% of the plain butt weight of relative fiber.Alkylolamides has good washing force, solubilizing power, and suspended dispersed is dirty
Dirt, imurity-removal ability is strong, is conducive to improving washing clean result.
Washed using three roads, thoroughly remove filament subsidiary alkali, sulphur and other non-cellulosic impurities, pH is gradually reduced most
After wash to pH up to neutrality.Gradually reduced from the bath of washing one to three bath water temperatures of washing, be due to that the firm tow that starts is dirtier, temperature
Higher to make the cleaner of tow cleaning, as tow is cleaned multiple times gradually totally, reduction temperature can reduce the consumption of steam.
Last washing together uses normal temperature, and preventing tow to be packaged in, temperature in plastic sheeting is too high to disengage moisture, and hinders subsequent product
The inconvenient problem of artificial operation.
As an improvement technical scheme, the dehydration in the step (3), (4), (5), (6) carried out using dehydrator
Dehydration, the dehydrator is two line with rubber compression rollers being oppositely arranged；The line with rubber compression roller is provided with least one set；Or set
Be serially connected more than two is equipped with, to improve dehydrating effect.
As a kind of perferred technical scheme, the flocking is delustering fibre or semi dull fibre with viscose rayon.
TITANIUM DIOXIDE DELUSTRANT is added in spinning solution, the plain tow of semi-dull, delustering fibre then can be made by above-mentioned process step.
Content of titanium dioxide content of titanium dioxide in 0.2~0.9%, delustering fibre element tow exists in semi dull fibre element tow
More than 1.2%.
As a preferred embodiment, manner of packing is used sets moisture-proof film in packaging bag, and moisture-proof film is sealed, keep silk
Beam contained humidity is stable.
To solve above-mentioned second technical problem, the technical scheme is that：
A kind of equipment for after-treatment used in the preparation method of flocking viscose rayon：
Including two baths set gradually, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two, one bath of washing, water
Wash two baths, three baths of washing and cut-out packing machine；
The bottom of two bath is provided with steam pipe, and the top of the steam pipe is evenly equipped with venthole；
Between the cooling retraction bath and the bath of desulfurization one, between the bath of desulfurization one and the bath of desulfurization two, desulfurization two bathes
Between one bath of groove and washing, between two baths of one bath of washing and washing, between three baths of two baths of washing and washing respectively
It is provided with dehydrator；De- device eventually is provided between three baths of the washing and cut-out packing machine.
As a kind of perferred technical scheme, two bath, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two,
Wash a bath, two baths of washing, the tow entrance of three baths of washing and tow exit and be respectively arranged with one group of godet.
As a kind of perferred technical scheme, one group of godet includes 2~3 godets.
As a kind of perferred technical scheme, the steam pipe is Heat-stable steam pipe.
As a kind of improved technical scheme, the length of two bath is 30~35m.
As a kind of improved technical scheme, the length of the bath of desulfurization one and the bath of desulfurization two is respectively 10~15m.
As a kind of preferred technical scheme, the dehydrator and whole de- device are two line with rubber compression rollers being oppositely arranged.
As a kind of preferred technical scheme, the line with rubber compression roller is connected to cylinder.
As a kind of improved technical scheme, two bath, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two,
Wash a bath, the tow port of export of three baths of two baths of washing and washing and be provided with the gear extended upwards along tow traffic direction
Water plate.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Primery vascular bundle after coagulating bath is molded and is stretched is carried out damp and hot drawing-off, two bath temperatures by the present invention first
98~100 DEG C, fluidized state is kept, the as-spun fibre not regenerated completely after coagulating bath completely, is sufficiently reacted, come into being
Fibre bundle is changed into uniform sheet-like fiber tow piece；The cooling retraction then carried out, is fixed to drawing-off effect above, is changed
The physical and mechanical properties and deformability of fiber have been apt to it, have improved product interior quality, be conducive to flocking application, has improved flocking production
Quality.Then bathe, carried out after abundant desulfurization respectively through the bath of desulfurization one and desulfurization two, then by three washings, wash away residual
Impurity, obtain that residual sulfur content is low, impurity content is low, strand shaping it is thorough, strength and elongation is high and the high viscose rayon of dyeing uniformity.
The dehydrator that dehydration after each desulfurization, after washing is used is two line with rubber compression rollers being oppositely arranged, not only
It is neat sheet-like fiber tow from beginning to end beneficial to the processing of next procedure, and by the fibre bundle of pressurizing and dehydrating,
Beneficial to follow-up cutoff process.
The present invention is provided with the steam pipe of venthole in two bath bottoms, and big stock primery vascular bundle is fully dispersed in flakes
Shape fibre plate, tow and increases two baths, the bath of desulfurization one, the bath of desulfurization two in the further coagulation forming of two baths of boiling
Slot length, increases by 30~60% by the length of two baths, the bath of desulfurization one, the bath of desulfurization two, extends the reaction time respectively, and
Use polyalkylene glycol alkyl amine, alkylolamides as bleeding agent, builder, above-mentioned series of processing steps is substantially reduced
The content of sulphur and other non-cellulosic materials in product, solves the residual sulphur that puzzlement viscose rayon is present as flocking fiber
Amount is high, the problems such as dyeing uneven；Solve the quality uniformity of different batches of product, the problems such as stability difference is larger, place
Product inherent quality after reason is good, and uniformity is good, and control is stable.
The present invention is bathed in two baths, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two, one bath of washing, washing two
The tow port of export of three baths of groove and washing is provided with the water fender extended upwards along tow traffic direction, in per pass process step
Afterwards, the treatment fluid that the treatment fluid or tow squeezed out is taken out of is recovered back in treatment trough, has both saved the consumption of chemical industry material, again
The treatment effect of next procedure is not influenceed.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the equipment for after-treatment of the present invention；
In figure, 1. 2 baths；2. cooling retraction bath；3. the bath of desulfurization one；4. the bath of desulfurization two；5. wash a bath；
6. wash two baths；7. wash three baths；8. cut off packing machine；9. steam pipe；10. dehydrator；11. device is taken off eventually；12. seal wire
Roller；13. water fender.
Embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
As shown in figure 1, the equipment for after-treatment used in a kind of preparation method of flocking viscose rayon：
Including two baths 1 set gradually, cooling retraction bath 2, the bath 3 of desulfurization one, the bath 4 of desulfurization two, one bath of washing
Groove 5, two baths 6 of washing and three baths 7 of washing and cut-out packing machine 8；
The bottom of two bath 1 is provided with steam pipe 9, and the top of the steam pipe 9 is evenly equipped with venthole；
Between the cooling retraction bath 2 and the bath 3 of desulfurization one, between the bath 3 of desulfurization one and the bath 4 of desulfurization two, desulfurization
Two baths 4 and washing one bath 5 between, washing one bath 5 and washing two baths 6 between, it is described washing two baths 6 and washing three
Dehydrator 10 is respectively arranged between bath 7；De- device 11 eventually is provided between three baths 7 of the washing and cut-out packing machine 8.
Two bath 1, cooling retraction bath 2, the bath 3 of desulfurization one, the bath 4 of desulfurization two, one bath 5 of washing, washing two
The tow entrance of three baths 7 of bath 6 and washing and tow exit are respectively arranged with one group of godet 12.
Two bath 1, cooling retraction bath 2, the bath 3 of desulfurization one, the bath 4 of desulfurization two, one bath 5 of washing, washing two
The tow port of export of three baths 7 of bath 6 and washing is provided with the water fender 13 extended upwards along tow traffic direction.
As a preferred embodiment, one group of godet includes 2~3 godets；The steam pipe is resistance to
The acidproof steam pipe of temperature；The length of two bath is 30~35m；The length of the bath of desulfurization one and the bath of desulfurization two is respectively
10~15m.The dehydrator is two line with rubber compression rollers being oppositely arranged with de- device eventually；The line with rubber compression roller is connected to gas
Cylinder.
Embodiment 1
Spinning solution is made in cellulose pulp, cellulose spin dope is come into being through spinning-drawing machine coagulating bath coagulation forming
Strand, after nascent strand leads drawing-off, deflector roll drawing-off through shower nozzle drawing-off, silk, carries out boundling and obtains big stock primery vascular bundle, will be nascent
Fibre bundle sequentially passes through following process step：
(1) primery vascular bundle is entered into two baths and carries out damp and hot drawing-off, sheet tow piece is obtained after damp and hot drawing-off；
Sulfur acid 20g/L in two body lotions；Steam, the Heat-stable steam pipe are passed through from the Heat-stable steam pipe of the bottom of two baths
Top be evenly equipped with venthole, steam heating keeps 98~100 DEG C of the temperature of two body lotions；The degree of draft of the damp and hot drawing-off is
10%；
(2) by sheet tow piece enter cooling retraction bath, it is described cooling retraction bath be normal-temperature water, cooling retraction use-
2.5% negative drawing-off；
(3) bath of desulfurization one is entered after the tow piece cooled down after retraction is dehydrated through dehydrator, desulfurization one contains hydrogen-oxygen in bathing
Change sodium 4.5g/l；Polyalkylene glycol alkyl amine also containing the plain butt weight 0.05% of relative fiber；78 DEG C of the temperature that desulfurization one is bathed；
(4) the tow piece after desulfurization one is bathed enters the bath of desulfurization two after being dehydrated through dehydrator, desulfurization two contains hydrogen-oxygen in bathing
Change sodium 3.5g/l, 78 DEG C of the temperature that desulfurization two is bathed；
(5) water-washing step is entered after the tow piece after desulfurization is dehydrated through dehydrator, the water-washing step includes washing one
Bath, the bath of washing two and washing three are bathed；The temperature of the bath of washing one is 48 DEG C；It is dry containing relative fiber element in the bath of washing one
0.02% alkylolamides of base weight；The temperature of the bath of washing two is 35 DEG C；The temperature of the bath of washing three is normal temperature；
(6) cut-out after de- device dehydration eventually of the tow piece after washing obtains finished product tow, the finished product tow
Water content is 53.5wt%.
Embodiment 2
Spinning solution is made in cellulose pulp, cellulose spin dope is come into being through spinning-drawing machine coagulating bath coagulation forming
Strand, after nascent strand leads drawing-off, deflector roll drawing-off through shower nozzle drawing-off, silk, carries out boundling and obtains big stock primery vascular bundle, the spray
The degree of draft of head drawing-off is 60%, and the degree of draft that the silk leads drawing-off is 2%；The degree of draft of the deflector roll drawing-off is 25%；Will
Primery vascular bundle sequentially passes through following process step：
(1) two baths that the primery vascular bundle enters 32m length are subjected to damp and hot drawing-off, sheet is obtained after damp and hot drawing-off
Tow piece；Sulfur acid 25g/L in two body lotions；Steam is passed through from the Heat-stable steam pipe of the bottom of two baths, the heatproof is resistance to
The top of acid vapor pipe is evenly equipped with venthole, and steam heating keeps 99~100 DEG C of the temperature of two body lotions；The damp and hot drawing-off is led
It is 11% to stretch rate；
(2) sheet tow piece is entered into cooling retraction bath, the cooling retraction bath is normal-temperature water, cooling retraction use -2%
Negative drawing-off；
(3) bath of desulfurization one of 12m length is entered after the tow piece cooled down after retraction is dehydrated through dehydrator, during desulfurization one is bathed
5.5g/l containing sodium hydroxide；Polyalkylene glycol alkyl amine also containing the plain butt weight 0.08% of relative fiber；The temperature that desulfurization one is bathed
76 DEG C of degree；
(4) the tow piece after desulfurization one is bathed enters the bath of desulfurization two of 12m length after being dehydrated through dehydrator, during desulfurization two is bathed
5.0g/l containing sodium hydroxide, 76 DEG C of the temperature that desulfurization two is bathed；
(5) water-washing step is entered after the tow piece after desulfurization is dehydrated through dehydrator, the water-washing step includes washing one
Bath, the bath of washing two and washing three are bathed；The temperature of the bath of washing one is 50 DEG C；It is dry containing relative fiber element in the bath of washing one
0.03% alkylolamides of base weight；The temperature of the bath of washing two is 35 DEG C；The temperature of the bath of washing three is normal temperature；
(6) cut-out after de- device dehydration eventually of the tow piece after washing obtains finished product tow, the finished product tow
Water content is 51.5wt%.
Embodiment 3
Spinning solution is made in cellulose pulp, content 1.5wt% fine to first nano-silica is added in spinning solution
Change titanium slurries, cellulose spin dope obtains nascent strand through spinning-drawing machine coagulating bath coagulation forming, come into being strand through shower nozzle drawing-off,
Silk is led after drawing-off, deflector roll drawing-off, is carried out boundling and is obtained big stock primery vascular bundle, the degree of draft of the shower nozzle drawing-off is 50%, institute
It is 1.5% to state silk and lead the degree of draft of drawing-off；The degree of draft of the deflector roll drawing-off is 35%；Primery vascular bundle is sequentially passed through following
Process step：
(1) two baths that the primery vascular bundle enters 35m length are subjected to damp and hot drawing-off, sheet is obtained after damp and hot drawing-off
Tow piece；Sulfur acid 18g/L in two body lotions；Steam is passed through from the Heat-stable steam pipe of the bottom of two baths, the heatproof is resistance to
The top of acid vapor pipe is evenly equipped with venthole, and steam heating keeps 99~100 DEG C of the temperature of two body lotions；The damp and hot drawing-off is led
It is 12.5% to stretch rate；
(2) by sheet tow piece enter cooling retraction bath, it is described cooling retraction bath be normal-temperature water, cooling retraction use-
3.5% negative drawing-off；
(3) bath of desulfurization one of 15m length is entered after the tow piece cooled down after retraction is dehydrated through dehydrator, during desulfurization one is bathed
3g/l containing sodium hydroxide；Polyalkylene glycol alkyl amine also containing the plain butt weight 0.06% of relative fiber；The temperature that desulfurization one is bathed
80℃；
(4) the tow piece after desulfurization one is bathed enters the bath of desulfurization two of 15m length after being dehydrated through dehydrator, during desulfurization two is bathed
3g/l containing sodium hydroxide, 80 DEG C of the temperature that desulfurization two is bathed；
(5) water-washing step is entered after the tow piece after desulfurization is dehydrated through dehydrator, the water-washing step includes washing one
Bath, the bath of washing two and washing three are bathed；The temperature of the bath of washing one is 52 DEG C；It is dry containing relative fiber element in the bath of washing one
0.02% alkylolamides of base weight；The temperature of the bath of washing two is 38 DEG C；The temperature of the bath of washing three is normal temperature；
(6) cut-out after de- device dehydration eventually of the tow piece after washing obtains finished product tow, the finished product tow
Water content is 50wt%.
The performance indications for the finished fiber that embodiment 1-3 is prepared are shown in Table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Dry fracture strength (CN/dtex) | 2.11 | 2.07 | 2.16 |
| Wet breaking strength (CN/dtex) | 1.27 | 1.15 | 1.21 |
| Line density (dtex) | 1.67 | 3.33 | 2.23 |
| Dry elongation at break % | 19.2 | 21.2 | 18.6 |
| Fault (mg/100g) | 1.6 | 3.6 | 2.6 |
| Residual sulfur content (mg/100g) | 3.2 | 5.3 | 3.0 |
| Dyeing uniformity (gray card) | More than level Four | More than level Four | More than level Four |
| Ash content (%) | 1.25 | 1.38 | 1.30 |
Claims (10)
1. a kind of preparation method of flocking viscose rayon, it is characterised in that by after coagulating bath is molded and is molded stretching
Primery vascular bundle sequentially passes through following process step：
(1) primery vascular bundle is entered into two baths and carries out damp and hot drawing-off, sheet tow piece is obtained after damp and hot drawing-off；Two baths
15~30g/L of sulfur acid in liquid, 98~100 DEG C of the temperature of two body lotions；
(2) the sheet tow piece is entered into cooling retraction bath, the cooling retraction bath is normal-temperature water, and cooling retraction is led using negative
Stretch；
(3) the tow piece after retraction will be cooled down and enters the bath of desulfurization one, 2~8g/ containing sodium hydroxide during desulfurization one is bathed after dehydration
l；75~85 DEG C of the temperature that desulfurization one is bathed；
(4) the tow piece after desulfurization one is bathed enters the bath of desulfurization two, 1~7g/ containing sodium hydroxide during desulfurization two is bathed after dehydration
L, 75~85 DEG C of the temperature that desulfurization two is bathed；
(5) the tow piece after desulfurization is entered into water-washing step after dehydration, the water-washing step at least includes the bath of washing one, washing
Two baths and washing three are bathed；The temperature of the bath of washing one is 45~55 DEG C；The temperature of the bath of washing two is 30~40 DEG C；It is described
The temperature of the bath of washing three is normal temperature；
(6) the tow piece after washing is cut off after dehydration obtains finished product tow, and the water content of the finished product tow is 45
~55wt%.
2. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：The shaping stretching includes spray
Head drawing-off, silk lead drawing-off and deflector roll drawing-off；The degree of draft of the shower nozzle drawing-off is 0~100%, and the silk leads the degree of draft of drawing-off
For 1~3%；The degree of draft of the deflector roll drawing-off is 20~50%.
3. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：The bottom of two bath is set
Steam pipe is equipped with, the top of the steam pipe is evenly equipped with venthole.
4. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：The drawing-off of the damp and hot drawing-off
Rate is 5~15%；The degree of draft of the cooling retraction is -1~-5%.
5. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：The length of two bath is
30~35m；The bath of desulfurization one and the bath length of desulfurization two are respectively 10~15m.
6. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：The desulfurization one also contains in bathing
There is the polyalkylene glycol alkyl amine of the plain butt weight 0.01~0.1% of relative fiber.
7. the preparation method of flocking viscose rayon as claimed in claim 1, it is characterised in that：Contain in the bath of washing one
Alkylolamides, the consumption of alkylolamides is the 0.01~0.05% of the plain butt weight of relative fiber.
8. the preparation method of the flocking viscose rayon as described in claim 1 to 7 any claim, it is characterised in that：Institute
The dehydration stated in step (3), (4), (5), (6) is dehydrated using dehydrator, and the dehydrator is two linings being oppositely arranged
Glue compression roller；The line with rubber compression roller is provided with least one set.
9. the equipment for after-treatment used in the preparation method of the flocking viscose rayon described in claim 1, it is characterised in that：
Including two baths set gradually, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two, one bath of washing, washing two
Bath, three baths of washing and cut-out packing machine；
The bottom of two bath is provided with steam pipe, and the top of the steam pipe is evenly equipped with venthole；
Between the cooling retraction bath and the bath of desulfurization one, between the bath of desulfurization one and the bath of desulfurization two, the bath of desulfurization two and
Wash between a bath, set respectively between two baths of one bath of washing and washing, between three baths of two baths of washing and washing
There is dehydrator；De- device eventually is provided between three baths of the washing and cut-out packing machine.
10. the equipment for after-treatment used in the preparation method of flocking viscose rayon as claimed in claim 9, it is characterised in that：
Two bath, cooling retraction bath, the bath of desulfurization one, the bath of desulfurization two, one bath of washing, two baths of washing and washing three are bathed
The tow port of export of groove is provided with the water fender extended upwards along tow traffic direction.
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| CN201710621669.6A CN107326460B (en) | 2017-07-27 | 2017-07-27 | Equipment for after-treatment used in a kind of preparation method and preparation method of flocking viscose rayon |
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| CN107326460B (en) | 2019-11-15 |
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Effective date of registration: 20211207 Address after: 224400 Jiangsu Yancheng Funing high tech Industrial Development Zone Aoyang Avenue Saideli (Yancheng) Fiber Co., Ltd Patentee after: Saideli (Yancheng) Fiber Co.,Ltd. Address before: 224400 No.1, Aoyang Avenue, high tech Zone, Funing County, Yancheng City, Jiangsu Province Patentee before: FUNING AOYANG TECHNOLOGY CO.,LTD. |
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