CN105544193A - Hydrophilic modification method for polyester fibers with bromoethane and PVA - Google Patents
Hydrophilic modification method for polyester fibers with bromoethane and PVA Download PDFInfo
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- CN105544193A CN105544193A CN201610047925.0A CN201610047925A CN105544193A CN 105544193 A CN105544193 A CN 105544193A CN 201610047925 A CN201610047925 A CN 201610047925A CN 105544193 A CN105544193 A CN 105544193A
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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
- D06M13/08—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with halogenated hydrocarbons
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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
- 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
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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Abstract
The invention discloses a hydrophilic modification method for polyester fibers with bromoethane and PVA and belongs to the technical field of macromolecules. According to the method, a sodium hydroxide solution is added to the polyester fibers, the mixture is stirred, heated and preprocessed, the surfaces of the polyester fibers are damaged, and subsequent modification processing is facilitated; a bromoethane solution is added to the polyester fibers, the mixture is stirred and heated and subjected to modification treatment, then a PVA solution with the mass ratio being 4-5.5% is added to the polyester fibers, the mixture is stirred and heated, and the polyester fibers obtained after hydrophilic modification is obtained. According to the method, after the sodium hydroxide solution is added for preprocessing the polyester fibers, the bromoethane solution and the PVA are utilized to conduct modification processing on the polyester fibers, and the polyester fibers good in hydrophilia and antistatic performance are obtained. The method is easy and convenient to operate, the reaction speed and the reaction temperature are easy to control, the amount of organic solvent added in the reaction process is small, low toxin, low pollution and low emission are achieved, subsequent operation is easy and convenient to conduct, industrialized popularization are facilitated, and high economic benefits are achieved.
Description
Technical field:
The invention discloses a kind of bromoethane and PVA to the hydrophilic modification method of polyster fibre, belong to textile finishing process technical field.
Background technology:
Terylene is the trade name of dacron fibre, is one of the large main force of three in synthetic fiber fiber.Because terylene linear macromolecule is symmetry benzene ring structure, good linearity and molecular chain structure stereoregular, it is had, and intensity is high, good springiness and the rigidity superior physical and mechanical properties such as large, and weak acid, alkali are stablized, there is excellent DIMENSIONAL STABILITY and good corrosion resistance, it is a kind of ideal textile fabric, but, terylene is a kind of typical hydrophobic fibre, only respectively there is a hydroxyl at its molecule two ends, and without other hydrophilic radical, molecular structure is close-packed arrays, degree of crystallinity is high, and hygroscopicity is poor.In normal conditions (20 DEG C of relative humidity 65%), the hydroscopicity of terylene only has about 0.4% (cotton 7-8%, polyamide fibre 4%, acrylic fibers 1-2%), and under the condition of 100% relative humidity, hydroscopicity is also only 0.6-0.8%.Therefore its hygroscopicity poor, easily produce electrostatic, easily stain, affect its snugness of fit.
Endowing terylene fiber or fabric hydrophilic mainly contain two kinds of methods: one is spinning modification: in the spinning process of fiber, utilize the synthetic technology of fiber to carry out modification to Structure of PET Fiber, make polyster fibre itself have hydrophilicity, thus improve terylene wear performance; Two is arrange modification: mostly at fiber surface modification, utilize dacron afterfinish technology and reach modification object.Namely on terylene macromolecular chain, introduce hydrophilic radical, make fabric face form hydrophilic layer, thus change fiber surface hydrophilicity.
Spinning modification refers to and makes polyster fibre have hydrophilicity in the process of synthetic fiber, current trend makes polymer molecular structure hydrophiling, or introduce hydrophilic monomer or become the monomer of hydrophilic component after dyeing and finishing processing, the heteromorphosis of terylene structure, microporous, compound house and modification of graft etc. are in input suitability for industrialized production in various degree.The essence of chemical modification will form one deck hydrophilic compounds on the surface of polyster fibre or fabric, reach the object improving fiber surface hydrophilicity, adoptable method mainly contains the surface grafting polymerization of hydrophilic monomer, the absorption set of hydrophilic finish agent and some other process of fiber surface.
Hydrophilic radical graft copolymerization: the surface grafting polymerization of hydrophilic monomer introduces the hydrophilic radicals such as hydroxyl, sulfonic group, ehter bond in the large molecule of terylene, thus improve the hygroscopicity of polyster fibre, graft copolymerization mainly comprises chemical graft and radiation grafting, and radiation grafting is better than chemical graft.Because terylene molecular chain structure has packing ability closely and high degree of crystallinity, and there is no active group above large molecule, graft copolymerization mainly utilizes initator or energy beam, ultraviolet lamps irradiates, or using plasma carries out etching processing to PET fiber surface, fiber surface is made to produce free radical, hydrophilic monomer is adopted to carry out glycerol polymerization again on free radical, thus form the new superficial layer of water imbibition and antistatic behaviour, this method general device is complicated, reaction speed is difficult to control, and has not yet to see industrialization report.
Chinese invention patent CN201410165074.0 provides the method for a kind of PVA to polyster fibre hydrophilic modifying, polyster fibre is referred to adopt mass fraction to be the sodium hydroxide solution preliminary treatment 1h of 3-10%, solid-to-liquid ratio is 1:50, through to rinse and dried polyster fibre is put into and filled the reaction vessel that mass fraction is the PVA solution of 0.2-3%, then reaction vessel is added to the acetic acid of 3:2:1 by volume, methyl alcohol, sulfuric acid, acetic acid, methyl alcohol, the volume fraction of sulfuric acid is respectively 10%, again the GA that mass fraction is 25% is added to reaction vessel, the mol ratio of GA and PVA is 1:4, mechanic whirl-nett reaction 1-2h at 50-70 DEG C, after reaction terminates, rinse with water, dry.Through characterizing and measuring, modified polyster fibre uniformly containing PVA, contact angle is below 10-60 degree, the hydrophily of polyster fibre obtains larger improvement and effect stability, is of the present invention closest to prior art, but this technology hydrophilicity is excellent not, the method process is complicated simultaneously, organic solvent use amount is large, and subsequent operation is polluted comparatively serious, is unfavorable for industrialization promotion.
Chinese invention patent CN201510590085.8 discloses a kind of parents' triazines monomer to the method for polyster fibre hydrophilic modifying, comprises the steps: to mix dried for dried PET, 1-3 parts by mass of 100 parts by mass in high-speed mixer containing the long chain alkane chain extender of GMA side base and the antioxidant of 0.1-0.5 parts by mass; The material mixed is carried out in double screw extruder melt extrude granulation, prepare modified hydrophilic polyester granules; By modified hydrophilic polyesters beads fuse spinning, prepare the modified polyester fibre that GMA group and a small amount of hydroxyl are contained in surface; Polyster fibre after pre-reaction is put into the parents' triazines monomer reaction solution prepared, under microwave condition, carry out graft reaction, namely prepare the polyster fibre of strong hydrophilicity.The method adopts microwave method to make graft reaction speed rapider and efficiency is high than conventional method, and microwave penetration ability is strong, reaches temperature and course of reaction control effects accurately, but the method complicated operation, be unfavorable for that industry changes into product.
Summary of the invention:
The object of the invention is to for the deficiencies in the prior art, provide a kind of easy and simple to handle, reaction speed and reaction temperature are easy to control, organic solvent addition is few, the low emission of low toxicity low stain, subsequent operation is easy, is beneficial to industry and changes into the method for producing the polyster fibre hydrophilic modifying promoted.
The invention provides following technical scheme:
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre, the sodium hydroxide solution that mass fraction is 6-8% will be added in polyster fibre, preliminary treatment 2-2.5h is stirred under 60-65 DEG C of temperature conditions, mechanical agitation speed is 100-150 rev/min, the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30-40, preliminary treatment terminates rear water and rinses, low temperature drying;
Add bromoethane solution by the polyster fibre after low temperature drying, agitating heating, mechanical agitation speed is 100-150 rev/min, heating-up temperature is 30-35 DEG C, reaction time 2-3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20-30, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 4-5.5%, agitating heating, mechanical agitation speed is 200-250 rev/min, heating-up temperature is 50-60 DEG C, reaction time 5-7h, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50-60, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Preferably, will add in bromoethane solution processes in the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.01-0.02%, agitating heating.
Preferably, described pyridine p-toluenesulfonic acid is AR, active constituent content >=99%.
Preferably, will add the sodium hydroxide solution that mass fraction is 7% in polyster fibre, and stir preliminary treatment 2.5h under 60 DEG C of temperature conditions, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30.
Preferably, add bromoethane solution, agitating heating by the polyster fibre after low temperature drying, mechanical agitation speed is 100-120 rev/min, and heating-up temperature is 35 DEG C, reaction time 2.5-3h, and the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20-25.
Preferably, dried polyster fibre is added the PVA solution that mass fraction is 4.5-5.5%, agitating heating, mechanical agitation speed is 220-250 rev/min, heating-up temperature is 55-60 DEG C, 6-7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50-55, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions.
Preferably, the alcoholysis degree of described PVA is 87.0-89.0%, and viscosity is 4.5-6.0mpa.s, volatile content≤5.0%, content of ashes≤0.5%, and pH value is 5-7, purity >=93.5%.
Bromoethane (chemical formula: C
2h
5br) have another name called bromic ether, be a kind of halogenated hydrocarbons, be abbreviated as EtBr, proterties: colourless oil liquid, have smell and the calcination taste of similar ether, dew is put air or is seen that light gradually becomes yellow, volatile, can with ethanol, ether, chloroform and most immiscible organic solvent.It is the important source material of organic synthesis; Agriculturally be used as the fumigating insecticide in storage cereal, warehouse and room etc.; Bromoethane is formed by potassium bromide and freezing sulfuric acid and ethanol synthesis.Be usually used in the ethylization of gasoline, refrigerant and anesthetic, Chemical Manufacture workman and stifling work all can contact the bromoethane of variable concentrations.The present invention adopts bromoethane process by after polyster fibre NaOH pretreatment, bromoethane is utilized to promote the modification of primary colors, promote that PVA is to the graft reaction of polyster fibre, improve reaction efficiency, and drain rear recyclable recycling, improve the service efficiency of organic solvent, there is higher economic benefit.
PVA is the abbreviation of polyvinyl alcohol, white plates, cotton-shaped or pulverulent solids, it is a kind of extremely safe macromolecule organic, to human non-toxic, have no side effect, there is good biocompatibility, especially in medical treatment as its aqueous gel being widely used in ophthalmology, wound dressing and joint prosthesis, simultaneously at polyvinyl alcohol film at medicinal film, also there is use the aspects such as artificial kidney film.Its security can from for wound skin repair, and eye eye drops product has some idea of.Some of them model is also often used in the facial mask in cosmetics, clean cream, toner and emulsion, is a kind of conventional security film forming agent.The present invention adopts PVA to the graft reaction of polyster fibre, at the PVA layer that PET fiber surface has one deck stable, pass through Optimal reaction conditions, adopt potassium hydroxide solution preliminary treatment, bromoethane solution-treated, promote that terylene molecule occurs to melt cocrystallization effect altogether, promote the wearing comfort improving polyster fibre.
Beneficial effect of the present invention:
1. the present invention adopts bromoethane process by after polyster fibre NaOH pretreatment, bromoethane is utilized to promote the modification of primary colors, promote that PVA is to the graft reaction of polyster fibre, improve reaction efficiency, and drain rear recyclable recycling, improve the service efficiency of organic solvent, there is higher economic benefit.
2. the present invention adopts PVA to the graft reaction of polyster fibre, at the PVA layer that PET fiber surface has one deck stable, pass through Optimal reaction conditions, adopt potassium hydroxide solution preliminary treatment, bromoethane solution-treated, promote that terylene molecule occurs to melt cocrystallization effect altogether, promote the wearing comfort improving polyster fibre.
3. the inventive method is easy and simple to handle, strong adaptability, and reaction speed and reaction temperature are easy to control, and organic solvent addition is few, and the low emission of subsequent operation easy low toxicity low stain, is beneficial to industrialization promotion, has higher economic benefit.
4. the polyster fibre that the inventive method modification obtains has good wearing comfort, and resistance to persistence is high, and its water suction absorption of perspiration is good, and heat transfer and moisture releasing ability have higher raising, and can have some improvement to antistatic effect and soil release performance.
Detailed description of the invention:
Be described in detail embodiments of the invention below, the present embodiment is implemented under premised on invention technical scheme, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.The experimental program of unreceipted actual conditions in embodiment, the condition that conveniently condition or manufacturer advise usually is implemented.
Embodiment one
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 6% will be added in polyster fibre, under 60 DEG C of temperature conditions, stir preliminary treatment 2h, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30, preliminary treatment terminates rear water and rinses, low temperature drying;
Bromoethane solution is added by the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.01%, agitating heating, mechanical agitation speed is 100 revs/min, heating-up temperature is 30 DEG C, reaction time 2h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 4%, agitating heating, mechanical agitation speed is 200 revs/min, heating-up temperature is 50 DEG C, 5h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Embodiment two
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 8% will be added in polyster fibre, under 65 DEG C of temperature conditions, stir preliminary treatment 2.5h, mechanical agitation speed is 150 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:40, preliminary treatment terminates rear water and rinses, low temperature drying;
Bromoethane solution is added by the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.02%, agitating heating, mechanical agitation speed is 150 revs/min, heating-up temperature is 35 DEG C, reaction time 3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:30, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 5.5%, agitating heating, mechanical agitation speed is 250 revs/min, heating-up temperature is 60 DEG C, 7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:60, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Embodiment three
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 6% will be added in polyster fibre, under 65 DEG C of temperature conditions, stir preliminary treatment 2h, mechanical agitation speed is 150 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30, preliminary treatment terminates rear water and rinses, low temperature drying;
Bromoethane solution is added by the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.02%, agitating heating, mechanical agitation speed is 100 revs/min, heating-up temperature is 35 DEG C, reaction time 2h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:30, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 4%, agitating heating, mechanical agitation speed is 250 revs/min, heating-up temperature is 50 DEG C, 7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Embodiment four
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 8% will be added in polyster fibre, under 60 DEG C of temperature conditions, stir preliminary treatment 2.5h, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:40, preliminary treatment terminates rear water and rinses, low temperature drying;
Bromoethane solution is added by the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.01%, agitating heating, mechanical agitation speed is 150 revs/min, heating-up temperature is 30 DEG C, reaction time 3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 5.5%, agitating heating, mechanical agitation speed is 200 revs/min, heating-up temperature is 60 DEG C, 5h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:60, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Embodiment five
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 7% will be added in polyster fibre, under 60 DEG C of temperature conditions, stir preliminary treatment 2.5h, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30, preliminary treatment terminates rear water and rinses, low temperature drying;
Add bromoethane solution by the polyster fibre after low temperature drying, agitating heating, mechanical agitation speed is 100 revs/min, and heating-up temperature is 35 DEG C, reaction time 2.5h, and the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 4.5%, agitating heating, mechanical agitation speed is 220 revs/min, heating-up temperature is 55 DEG C, 6h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Embodiment six
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre:
The sodium hydroxide solution that mass fraction is 7% will be added in polyster fibre, under 60 DEG C of temperature conditions, stir preliminary treatment 2.5h, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30, preliminary treatment terminates rear water and rinses, low temperature drying;
Add bromoethane solution by the polyster fibre after low temperature drying, agitating heating, mechanical agitation speed is 120 revs/min, and heating-up temperature is 35 DEG C, reaction time 3h, and the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:25, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 5.5%, agitating heating, mechanical agitation speed is 250 revs/min, heating-up temperature is 60 DEG C, 7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:55, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Comparative example one
PARSTER fiber (1.56dtex × 38mm), grammes per square metre is 244g/m
2,do not arrange.
Comparative example two:
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre, without sodium hydroxide solution preliminary treatment, by adding bromoethane solution in polyster fibre, agitating heating, mechanical agitation speed is 120 revs/min, and heating-up temperature is 35 DEG C, reaction time 3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:25, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 5.5%, agitating heating, mechanical agitation speed is 250 revs/min, heating-up temperature is 60 DEG C, 7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:55, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Comparative example three
A kind of bromoethane and PVA are to the hydrophilic modification method of polyster fibre: without bromoethane solution-treated, that is: the sodium hydroxide solution that mass fraction is 7% will be added in polyster fibre, preliminary treatment 2.5h is stirred under 60 DEG C of temperature conditions, mechanical agitation speed is 100 revs/min, the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30, preliminary treatment terminates rear water and rinses, low temperature drying;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 5.5%, agitating heating, mechanical agitation speed is 250 revs/min, heating-up temperature is 60 DEG C, 7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:55, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
Described pyridine p-toluenesulfonic acid is AR, active constituent content >=99%.
The alcoholysis degree of described PVA is 87.0-89.0%, and viscosity is 4.5-6.0mpa.s, volatile content≤5.0%, content of ashes≤0.5%, and pH value is 5-7, purity >=93.5%.
The present invention adopts PARSTER fiber (1.56dtex × 38mm), and grammes per square metre is 244g/m
2test, this fiber is made fabric (being 67.5dtex/96F through tram) and test.
Method of testing:
The thin elevation measurement of fiber hair:
Be fixed on support by the fabric sample upper end of 2.5cm × 20cm, lower end is immersed in potassium permanganate solution, the lifting height of solution on fabric after mensuration 30min.
Fibre moisture regain rate measures:
Oven method measuring, sample, in (20 ± 2) DEG C, balances 24h under the condition of (65 ± 3) %RH.
Water-wash resistance measures:
With 5g/L standard synthetic detergent, bath raio 1:30, in shaking bath pot, wash 5min at temperature 40 DEG C is 1 time, and terylene is hung nature for several times and dries by continuous washing.
Hand feel performance is tested: close order and touch the fabric after arranging, with 5-10 people for a small group, grade, according to different feels, PRINTED FABRIC is carried out hand feel evaluation, concrete assessment method is: carry out feel grading from flexibility, smooth feeling two aspect, be divided into 5 grades, 1 grade the poorest, fabric feeling is comparatively hard, and sliding glutinous sense is poor.5 grades best, and fabrics feel soft, cunning are glutinous.
Concrete grading as shown in Table 1.
Table one: feel is graded
| 5 grades | 4 grades | 3 grades | 2 grades | 2 grades |
| Very good | Well | In | Slightly poor | Difference |
Table two: the embodiment of the present invention obtains dacron capillary effect and moisture regain impact
The fabrics of polyester that the embodiment of the present invention prepares has good capillary effect and moisture regain effect, and namely hydrophily is significantly improved.PVA molecule defines uniform main officer of Tibet hydrophilic polymer film at fabric face, by comparative example two and comparative example three, we can draw the hydrophilicity that can significantly improve fabric, NaOH pretreatment agent bromoethane can to after the preliminary treatment of polyster fibre molecule, improves the binding ability of itself and PVA molecule.After the present invention simultaneously arranges, its hand feeling quality does not reduce.
Experiment one: sodium hydroxide solution treatment temperature is on dacron capillary effect and moisture regain impact
Experimental technique: the polyster fibre after adopting the preparation of the method described in embodiment six to obtain hydrophilic modifying, inquires into sodium hydroxide solution treatment temperature to dacron capillary effect and moisture regain impact.
Table three: sodium hydroxide solution treatment temperature on dacron capillary effect and moisture regain character impact
| Treatment temperature | Capillary effect (cm/30min) | Moisture regain (%) |
| 40 | 6.7 | 0.74 |
| 45 | 7.2 | 0.78 |
| 50 | 7.8 | 0.80 |
| 55 | 8.3 | 0.83 |
| 60 | 8.6 | 0.94 |
| 65 | 8.7 | 0.93 |
| 70 | 8.5 | 0.87 |
| 75 | 8.3 | 0.73 |
| 80 | 7.5 | 0.59 |
Polyster fibre can effectively improve its hydrophilicity through NaOH pretreatment, and along with the rising of temperature, wool effect of the fabric and moisture regain performance all increase, when temperature is more than 65 DEG C, temperature raises, and its wool effect of the fabric and moisture regain character rise along with temperature on the contrary and declines, and may be the too high group properties destroying fiber surface of temperature, cause later stage and PVA polymerization are affected and reduce its hydrophilicity, the present invention adopts the treatment temperature of sodium hydroxide solution to be 60-65 DEG C.
Experiment two: bromoethane solution treatment temperature is on dacron capillary effect and moisture regain impact
Experimental technique: the polyster fibre after adopting the preparation of the method described in embodiment six to obtain hydrophilic modifying, inquires into bromoethane solution treatment temperature to dacron capillary effect and moisture regain impact.
Table four: bromoethane solution treatment temperature on dacron capillary effect and moisture regain character impact
| Treatment temperature | Capillary effect (cm/30min) | Moisture regain (%) |
| 20 | 7.4 | 0.64 |
| 25 | 7.9 | 0.72 |
| 30 | 8.4 | 0.90 |
| 35 | 8.6 | 0.94 |
| 40 | 8.7 | 0.95 |
| 45 | 8.7 | 0.96 |
| 50 | 8.8 | 0.96 |
Along with the rising of bromoethane treatment temperature, capillary effect and the moisture regain character of its fabrics of polyester all increase, it is single after temperature is more than 35 DEG C, the amplitude that its hydrophilicity improves tends towards stability, substantially remain unchanged, so consider from economic benefit angle, the present invention adopts bromoethane solution-treated heating-up temperature to be 30-35 DEG C.
Above content is only better embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (7)
1. bromoethane and PVA are to a hydrophilic modification method for polyster fibre, it is characterized in that:
The sodium hydroxide solution that mass fraction is 6-8% will be added in polyster fibre, preliminary treatment 2-2.5h is stirred under 60-65 DEG C of temperature conditions, mechanical agitation speed is 100-150 rev/min, the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30-40, preliminary treatment terminates rear water and rinses, low temperature drying;
Add bromoethane solution by the polyster fibre after low temperature drying, agitating heating, mechanical agitation speed is 100-150 rev/min, heating-up temperature is 30-35 DEG C, reaction time 2-3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20-30, drains after reaction terminates;
Again the polyster fibre after draining is added the PVA solution that mass fraction is 4-5.5%, agitating heating, mechanical agitation speed is 200-250 rev/min, heating-up temperature is 50-60 DEG C, reaction time 5-7h, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50-60, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions, the polyster fibre namely after obtained hydrophilic modifying.
2. a kind of bromoethane according to claim 1 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: will add in bromoethane solution processes in the polyster fibre after low temperature drying, add the pyridinium p-toluenesulfonate solid of polyster fibre dry weight 0.01-0.02%, agitating heating.
3. a kind of bromoethane according to claim 2 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: described pyridine p-toluenesulfonic acid is AR, active constituent content >=99%.
4. a kind of bromoethane according to claim 1 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: the sodium hydroxide solution that mass fraction is 7% will be added in polyster fibre, preliminary treatment 2.5h is stirred under 60 DEG C of temperature conditions, mechanical agitation speed is 100 revs/min, and the solid-to-liquid ratio of polyster fibre and sodium hydroxide solution is 1:30.
5. a kind of bromoethane according to claim 1 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: add bromoethane solution by the polyster fibre after low temperature drying, agitating heating, mechanical agitation speed is 100-120 rev/min, heating-up temperature is 35 DEG C, reaction time 2.5-3h, the solid-to-liquid ratio of polyster fibre and bromoethane solution is 1:20-25.
6. a kind of bromoethane according to claim 1 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: dried polyster fibre is added the PVA solution that mass fraction is 4.5-5.5%, agitating heating, mechanical agitation speed is 220-250 rev/min, heating-up temperature is 55-60 DEG C, 6-7h during reaction, the solid-to-liquid ratio of polyster fibre and PVA solution is 1:50-55, and reaction terminates rear cold water flush and drying under 70 DEG C of conditions.
7. a kind of bromoethane according to claim 1 or 6 and PVA are to the hydrophilic modification method of polyster fibre, it is characterized in that: the alcoholysis degree of described PVA is 87.0-89.0%, viscosity is 4.5-6.0mpa.s, volatile content≤5.0%, content of ashes≤0.5%, pH value is 5-7, purity >=93.5%.
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