CN106758195B - A method of improving warp yarn sizing effect - Google Patents
A method of improving warp yarn sizing effect Download PDFInfo
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- CN106758195B CN106758195B CN201611159988.1A CN201611159988A CN106758195B CN 106758195 B CN106758195 B CN 106758195B CN 201611159988 A CN201611159988 A CN 201611159988A CN 106758195 B CN106758195 B CN 106758195B
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- warp thread
- slurry
- polyoxyethylene ether
- fatty alcohol
- pretreatment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/76—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
Abstract
The present invention relates to a kind of methods for improving warp yarn sizing effect, belong to technical field of textile processing.The method, which refers to use warp thread pretreatment process in warp yarn sizing technique, pads warp thread by the pretreatment fluid that ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate are prepared, warp thread after padding, which imports, decomposes evaporation area, second alcohol and water in pretreatment fluid gradually volatilizees, ammonium hydrogen carbonate is gradually decomposed and is volatilized, fiber surface of the fatty alcohol polyoxyethylene ether Molecular Adsorption in warp thread.Pretreated warp thread pads slurry through deflector roll traction, the fatty alcohol polyoxyethylene ether molecule that fiber surface in warp thread is distributed in padding slurry process is contacted with slurry, slurry is rapidly introduced into inside warp thread under fatty alcohol polyoxyethylene ether molecular action, obtains the warp thread for having starched yarn after the warp thread drying after padding slurry.Warp thread pretreatment reduces the time that slurry is impregnated with, and increases the amount that slurry is impregnated with, improves the effect of warp yarn sizing.
Description
Technical field
The present invention relates to a kind of methods for improving warp yarn sizing effect, belong to technical field of textile processing.
Technical background
When warp yarn sizing, warp thread is pulled into stock tank through deflector roll, and submergence slurries act on again via roll so that slurries enter
Inside warp thread.Fiber surface due to constituting warp thread typically contains water repellency ingredient, for example, cotton wax etc. is contained on raw cotton fiber surface
It is larger that water repellency material makes slurry enter difficulty inside warp thread.Prewetting sizing technology then passes through 80 DEG C -95 DEG C of water to warp thread
It pads, so that warp yam surface is prewetted, realizes the purpose that its hydrophilic speed between slurry improves, such as Chinese public publication
Object " Shanghai Textile science and technology " time of disclosure 2 months 2005, article name is prewetting sizing technique answering on dual-box slasher
With analysis, the document describes prewetting sizing technology, and material used by prewetting sizing is water, dries again to warp thread after process of prewetting
It is dry, disadvantage is that thermal energy needed for drying warp thread is higher to further improve production cost, while the degree dried compared with
It is difficult to control, dry overdrying then loses the meaning of prewetting sizing.Such as Chinese public publication " World Textile Leader " time of disclosure
2005, article name was prewetting sizing, and the document describes prewetting sizing technology, which can reduce the cost of starching, was mentioned
Strength after high warp yarn sizing, material used by prewetting sizing technique are water or add a small amount of surfactant in water to increase
Add seepage velocity, it is to play self-acting, surface by means of water in technique of prewetting that surfactant plays a role in the process
The purpose of activating agent is the water for helping to prewet in technique to warp thread internal penetration.Disadvantage is that raw material adds dilutional hyponatremia,
Especially with the help of surfactant, water penetration enter the amount inside warp thread than not plus surfactant water penetration amount than more
It is more.Excessive aqueous of warp thread, causes part water to enter in slurry tank, causes the change of slurry viscosity and solid content.In warp thread
It does not enter the moisture in slurry tank and then occupies the position of warp thread water suction, and the ability of the fibers adsorption slurry in warp thread does not occur
Change, so by the warp thread prewetted from identical slurry and a small amount of water is absorbed in slurries to further result in water in stock tank
Divide residual to increase, slurry solid content is caused to decline, influences production and operate normally.Surfactant also has application in starching, such as
Chinese patent publication No. CN104947423A, date of publication on 09 30th, 2015, a kind of entitled novel synthesis of innovation and creation
Fiber sizing agent, this application discloses the one kind constituted using the components such as alkyl phenol polyoxyethylene ether, methacrylic acid is novel
Synthetic fibers sizing agent.Its deficiency is to be to aid in the infiltration of slurry using main act on of alkyl phenol polyoxyethylene ether, not
Dressed warp is directly acted on, when slurry pads warp thread, alkyl phenol polyoxyethylene ether is wrapped in slurries, is directly acted on
The amount of warp thread is less, therefore the effect of its infiltration is limited.
Ethyl alcohol and surfactant also have application in starching, such as Chinese patent publication No. CN05256581A, date of publication
On 01 20th, 2016, entitled " a kind of poplin cloth class close weave starching dyestuff " of innovation and creation, this application discloses
Formula of size is collectively formed using ethoxylated dodecyl alcohol, ethyl alcohol and other components.Its deficiency be ethyl alcohol wherein and be for
The wetting of Ester in being easy to be formulated, and the main function of ethoxylated dodecyl alcohol is to aid in dyestuff penetration into warp thread
Portion, molecule, which is easy to be wrapped up by slurry macromolecular, to be unsuitable for directly acting on fiber surface.
Chinese patent publication No. CN103469623A, date of publication on December 25th, 2013, entitled the one of innovation and creation
The method that kind reactive dye carry out salt-free dyeing to un-scoured and unbleached cotton textile, this application discloses organic using high proportion alcohols
The pre-swollen liquid that solvent and a small amount of water mix carries out pre-swollen to un-scoured and unbleached cotton textile, and organic molten with high proportion alcohols
The method that the dye liquor that agent and water and dyestuff mix dyes preswollen un-scoured and unbleached cotton textile, in application case
In pre-swollen processing step, high proportion alcohol organic solvent generates swelling action to wax, protein-based substance, is conducive to seep
Saturating agent and levelling agent are contacted with the cellulose layer of cotton fiber, bleeding agent and levelling agent be then mainly further dye infiltration on contaminate and do
Pretreatment improves dyeing efficiency and effect.The main function of high proportion alcohol organic solvent is in dyeing course: not because of dyestuff
It is dissolved in high proportion alcohol organic solvent, in high proportion alcohol organic solvent and the system of water, dyestuff is only soluble in the water of low ratio
In, the concentration of dye solution is much higher than designed concentration, then the bleeding agent contacted under pre-swollen effect with fiber surface
And levelling agent, then dyestuff is easy and fast to dye and eliminates traditional boiling and bleaching process.Its deficiency is the high proportion alcohol in this method
Class organic solvent main function is the swelling substances such as cotton wax, is conducive to the reagents such as levelling agent bleeding agent and enters fiber inside warp thread
Quickly upper dye is realized on surface.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide a kind of method for improving warp yarn sizing effect, it is
Realization above-mentioned purpose, its technical solution is that:
A method of improving warp yarn sizing effect, including warp thread pretreatment, warp thread pads slurry, and warp thread drying is described
Warp thread pretreatment refer to by warp thread to be processed pad by ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate mix match
The pretreatment fluid of system.
The mass percent difference of ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate in the pretreatment fluid
Are as follows:
Ethyl alcohol 97.5%-98.9%
Fatty alcohol polyoxyethylene ether reagent 1%-2%
Ammonium hydrogen carbonate 0.1%-0.5%
Warp thread pads pretreatment fluid in pretreatment liquid bath, and padding speed is 56-65m/min, and pretreatment fluid is soaked in roll
Enter inside warp thread during rolling, the fiber surface being distributed in warp thread, the warp thread after padding pretreatment fluid, which imports, decomposes volatilization
The warp thread in evaporation area is decomposed under the action of temperature and negative pressure in region, and the second alcohol and water in pretreatment fluid gradually volatilizees, in advance
Ammonium hydrogen carbonate in treatment fluid is gradually decomposed and is volatilized, and the fatty alcohol polyoxyethylene ether Molecular Adsorption in pretreatment fluid is in warp thread
Fiber surface, wherein decompose evaporation area temperature be 30-50 DEG C, negative pressure be 5 × 104Pa-8×104Pa。
The weight ratio of fatty alcohol polyoxyethylene ether molecular wt and water in the fatty alcohol polyoxyethylene ether reagent
For 7:3.
Due to using above technical scheme, the present invention is changed under the premise of not changing warp thread pretreatment sizing technique
Become the formula of the pretreatment fluid in warp thread pretreating process, uses ethyl alcohol to prepare pretreatment fluid as main component in formula.?
In warp thread preprocessing process, ethyl alcohol, ammonium hydrogen carbonate and fatty alcohol polyoxyethylene ether examination are contained in the warp thread after padding pretreatment fluid
Agent, since ethyl alcohol belongs to volatile organic solvent, and in pretreatment fluid, ratio is high, and ammonium hydrogen carbonate does not dissolve in ethyl alcohol, but rouge
Aqueous in fat alcohol polyoxyethylene etherifying reagent, ammonium bicarbonate solubility, ammonium hydrogen carbonate can be dissolved in after water with good by this part water
Adsorption effect and being formed with the hydrophilic functional groups on fatty alcohol polyoxyethylene ether reagent molecule chain common is connected with hydrogen bond action
The functional group being connected together, and water can realize that hydrogen bond is connect between ethyl alcohol, so form with ethanol molecule, ammonia root from
The micel of son and fatty alcohol polyoxyethylene ether molecule common combination, containing hydrophilic and water repellent functional group in micel, so that
Micel can also can smoothly enter into fiber inside warp thread encountering fiber surface water repellent molecule.When warp thread enters decomposition volatilization
When region, under heating device effect, ethyl alcohol starts to volatilize, and the hydrone that when volatilization combines with ethanol molecule also can be by band
It walks；Ammonium hydrogen carbonate also starts to be thermally decomposed into water, ammonia and carbon dioxide, and ammonia is highly soluble in water, inherently takes away when volatilizing
Part moisture content.The hydrone inside warp thread is eliminated during ethyl alcohol and Ammonia valatilization jointly.After decomposing evaporation area
Only contain fatty alcohol polyoxyethylene ether molecule, sizing caused by can effectively avoid warp thread due to aqueous in warp thread.Fatty alcohol
Polyoxyethylene ether molecule is then distributed in warp thread, and fiber surface of the fatty alcohol polyoxyethylene ether molecule in warp thread forms molecule
Film, water repellent group links together with fiber surface water repellency interaction of molecules in fatty alcohol polyoxyethylene ether molecular structure,
And the hydrophilic radical in fatty alcohol polyoxyethylene ether molecular structure is then revealed in the outer layer of molecular film.This makes fiber through fatty alcohol
Acting on for polyoxyethylene ether molecule imparts Hydrophilic Fiber energy, when warp thread pads slurry, fiber surface in warp thread
Fatty alcohol polyoxyethylene ether molecule then plays its effect for assisting slurry penetration, accelerates the efficiency of slurry penetration.This exists than merely
The better effect that surfactant is realized is added in slurry.Therefore, the technical program is used, the effect of warp yarn sizing is improved
Fruit, and this method reduces the cost of production suitable for the processing of all kinds of warp yarn sizings.
Specific embodiment
A kind of method work of improvement warp yarn sizing effect of the invention is further retouched in detail combined with specific embodiments below
It states:
A method of improving warp yarn sizing effect, including the warp thread pretreatment process in warp yarn sizing technique, warp thread leaching
Roll slurry process, warp thread baking process.The warp thread pretreatment process, which refers to, pads warp thread to be processed by ethyl alcohol, fat
The pretreatment fluid of alcohol polyoxyethylene etherifying reagent and ammonium hydrogen carbonate mixed preparing,
Wherein, the mass percent of ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate is respectively as follows: in pretreatment fluid
Ethyl alcohol 97.5%-98.9%
Fatty alcohol polyoxyethylene ether reagent 1%-2%
Ammonium hydrogen carbonate 0.1%-0.5%
The weight ratio of fatty alcohol polyoxyethylene ether molecular wt and water in the fatty alcohol polyoxyethylene ether reagent
For 7:3.
Warp thread pads pretreatment fluid in pretreatment liquid bath, and padding speed is 56-65m/min, and pretreatment fluid is soaked in roll
Enter inside warp thread during rolling, the fiber surface being distributed in warp thread, the warp thread after padding pretreatment fluid, which imports, decomposes volatilization
The warp thread in evaporation area is decomposed under the action of temperature and negative pressure in region, and the second alcohol and water in pretreatment fluid gradually volatilizees, in advance
Ammonium hydrogen carbonate in treatment fluid is gradually decomposed and is volatilized, and the fatty alcohol polyoxyethylene ether Molecular Adsorption in pretreatment fluid is in warp thread
Fiber surface, wherein decompose evaporation area temperature be 30-50 DEG C, negative pressure be 5 × 104Pa-8×104Pa.It is pretreated
Warp thread pads slurry through deflector roll traction, and the fatty alcohol polyoxyethylene ether of fiber surface in warp thread is distributed in padding slurry process
Molecule is contacted with slurry, and slurry is rapidly introduced into inside warp thread under fatty alcohol polyoxyethylene ether molecular action, after padding slurry
Warp thread drying after obtain and starched the warp thread of yarn.Warp thread pretreatment reduces the time that slurry is impregnated with, and increases what slurry was impregnated with
Amount, improves the effect of warp yarn sizing.
Specific embodiment
Embodiment 1
Not pretreated pure cotton warp thread is immersed in pretreatment fluid by deflector roll traction, ethyl alcohol quality hundred in pretreatment fluid
Divide than being 98.9%, fatty alcohol polyoxyethylene ether reagent quality percentage is 1%, and ammonium hydrogen carbonate mass percent is 0.1%, is soaked
The pure cotton warp thread of saturating pretreatment fluid remains a part of ethyl alcohol, rouge after padding the roll that speed is 56m/min and rolling in pure cotton warp thread
Fat alcohol polyoxyethylene etherifying reagent and ammonium hydrogen carbonate, it is 30 DEG C that pure cotton warp thread, which is imported temperature, and condition of negative pressure is 5 × 104Point of Pa
Solve evaporation area.Pretreated pure cotton warp thread is immersed in slurry through deflector roll traction, the pure cotton warp thread drying after padding slurry
The pure cotton warp thread for having starched yarn is obtained afterwards.Effect is shown in Table 1.
Embodiment 2
Not pretreated pure cotton warp thread is immersed in pretreatment fluid by deflector roll traction, ethyl alcohol quality hundred in pretreatment fluid
Dividing than being 98.2%, fatty alcohol polyoxyethylene ether reagent quality percentage is 1.5%, and ammonium hydrogen carbonate mass percent is 0.3%,
Be impregnated with the pure cotton warp thread of pretreatment fluid after padding the roll that speed is 60m/min and rolling, remained in pure cotton warp thread a part of ethyl alcohol,
Fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate, it is 40 DEG C that pure cotton warp thread, which is imported temperature, and condition of negative pressure is 6.5 × 104Pa
Decomposition evaporation area.Pretreated pure cotton warp thread is immersed in slurry through deflector roll traction, the pure cotton warp thread after padding slurry
The pure cotton warp thread for having starched yarn is obtained after drying.Effect is shown in Table 1.
Embodiment 3
Not pretreated pure cotton warp thread is immersed in pretreatment fluid by deflector roll traction, ethyl alcohol quality hundred in pretreatment fluid
Divide than being 97.5%, fatty alcohol polyoxyethylene ether reagent quality percentage is 2%, and ammonium hydrogen carbonate mass percent is 0.5%, is soaked
The pure cotton warp thread of saturating pretreatment fluid remains a part of ethyl alcohol, rouge after padding the roll that speed is 65m/min and rolling in pure cotton warp thread
Fat alcohol polyoxyethylene etherifying reagent and ammonium hydrogen carbonate, it is 50 DEG C that pure cotton warp thread, which is imported temperature, and condition of negative pressure is 8 × 104Point of Pa
Solve evaporation area.Pretreated pure cotton warp thread is immersed in slurry through deflector roll traction, the pure cotton warp thread drying after padding slurry
The pure cotton warp thread for having starched yarn is obtained afterwards.Effect is shown in Table 1.
Embodiment 4
Not pretreated pure numb warp thread is immersed in pretreatment fluid by deflector roll traction, ethyl alcohol quality hundred in pretreatment fluid
Divide than being 98.9%, fatty alcohol polyoxyethylene ether reagent quality percentage is 1%, and ammonium hydrogen carbonate mass percent is 0.1%, is soaked
The pure numb warp thread of saturating pretreatment fluid remains a part of ethyl alcohol, rouge in pure fiber crops warp thread after padding the roll that speed is 56m/min and rolling
Fat alcohol polyoxyethylene etherifying reagent and ammonium hydrogen carbonate, it is 30 DEG C that pure numb warp thread, which is imported temperature, and condition of negative pressure is that the decomposition of 0.1Pa is waved
Send out region.Pretreated pure numb warp thread is immersed in slurry through deflector roll traction, is obtained after the pure numb warp thread drying after padding slurry
The pure numb warp thread of yarn must have been starched.Effect is shown in Table 1.
Embodiment 5
Not pretreated pure polyester warp thread is immersed in pretreatment fluid by deflector roll traction, ethyl alcohol quality in pretreatment fluid
Percentage is 98.9%, and fatty alcohol polyoxyethylene ether reagent quality percentage is 1%, and ammonium hydrogen carbonate mass percent is 0.1%,
The pure polyester warp thread of pretreatment fluid is impregnated with after padding the roll that speed is 56m/min and rolling, and a part is remained in pure polyester warp thread
Ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate, it is 30 DEG C that pure polyester warp thread, which is imported temperature, and condition of negative pressure is
The decomposition evaporation area of 0.1Pa.Pretreated pure polyester warp thread is immersed in slurry through deflector roll traction, pure after padding slurry
The pure polyester warp thread for having starched yarn is obtained after the drying of terylene warp thread.Effect is shown in Table 1.
For the technological merit for comparing the technical program, pretreated pure cotton, pure fiber crops and pure polyester warp thread are not done and is passed through respectively
Deflector roll traction is immersed in slurry, is padded not doing after pretreated pure cotton, pure fiber crops and pure polyester warp thread are dried for rear slurry and is obtained
That has starched yarn does not do pretreated pure cotton, pure fiber crops and pure polyester warp thread.Obtained sample respectively as pure cotton warp thread as former state, it is pure
Numb original sample and pure polyester are as former state.Embodiment 1-5 and pure cotton warp thread original sample, pure fiber crops are set with the rove sample of pure polyester original sample as former state
Lower 24 hours in constant-temperature constant-humidity environment, temperature is 20 DEG C, humidity 65%.Then tension failure test is carried out to above-mentioned sample,
Sample clamp distance is 5cm, tensile speed 50mm/min.It obtains data and is shown in Table 1:
The adhesion values and elongation of 1 dressed warp sample of table
Claims (2)
1. a kind of method for improving warp yarn sizing effect, including warp thread pretreatment, warp thread pads slurry, warp thread drying, feature
Be: the warp thread pretreatment, which refers to, pads warp thread to be processed by ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and carbonic acid
The pretreatment fluid of hydrogen ammonium mixed preparing；
Wherein, the mass percent of ethyl alcohol, fatty alcohol polyoxyethylene ether reagent and ammonium hydrogen carbonate is respectively as follows: in pretreatment fluid
Ethyl alcohol 97.5%-98.9%
Fatty alcohol polyoxyethylene ether reagent 1%-2%
Ammonium hydrogen carbonate 0.1%-0.5%
Warp thread pads pretreatment fluid in pretreatment liquid bath, and padding speed is 56-65m/min, and pretreatment fluid was padded in roll
Entering inside warp thread in journey, the fiber surface being distributed in warp thread, the warp thread after padding pretreatment fluid, which imports, decomposes evaporation area,
The warp thread in evaporation area is decomposed under the action of temperature and negative pressure, the second alcohol and water in pretreatment fluid gradually volatilizees, pretreatment
Ammonium hydrogen carbonate in liquid is gradually decomposed and is volatilized, fibre of the fatty alcohol polyoxyethylene ether Molecular Adsorption in warp thread in pretreatment fluid
Dimension table face, wherein the temperature for decomposing evaporation area is 30-50 DEG C, and negative pressure is 5 × 104Pa-8×104Pa。
2. a kind of method for improving warp yarn sizing effect as described in claim 1, it is characterised in that: the fatty alcohol polyoxy
The weight ratio of fatty alcohol polyoxyethylene ether molecular wt and water in ethylene etherifying reagent is 7:3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159988.1A CN106758195B (en) | 2016-12-15 | 2016-12-15 | A method of improving warp yarn sizing effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611159988.1A CN106758195B (en) | 2016-12-15 | 2016-12-15 | A method of improving warp yarn sizing effect |
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| CN106758195B true CN106758195B (en) | 2019-02-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004238761A (en) * | 2003-02-06 | 2004-08-26 | Toray Ind Inc | Carbon fiber strand and fiber-reinforced composite material |
| CN100410444C (en) * | 2006-10-11 | 2008-08-13 | 武汉科技学院 | Pretreating equipment for improving yarn sizing performance |
| DE102007019794A1 (en) * | 2007-04-26 | 2008-10-30 | Voith Patent Gmbh | Process for loading fibers of a pulp suspension with CaCO 3 formed from CaCl 2 and Ca (HCO 3) 2, (NH 4) 2 CO 3 and / or NH 4 HCO 3 |
| CN101525824B (en) * | 2009-04-08 | 2011-08-31 | 武汉科技学院 | Slashing on-line pretreatment sizing method |
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