CN101876142B - Method for modifying surface of cotton fabric by adopting titanium sulfate and urea - Google Patents
Method for modifying surface of cotton fabric by adopting titanium sulfate and urea Download PDFInfo
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Abstract
The invention discloses a method for modifying the surface of cotton fabric by adopting titanium sulfate and urea, which comprises the following steps: ultrasonically oscillating and cleaning the cotton fabric to be modified at 80 DEG C, and then, drying the cotton fabric; weighing the cotton fabric and titanium sulfate according to the mass ratio of 3:2-10; weighing urea under the condition that the molar ratio of the titanium sulfate to the urea is 0.1-0.5:1; dissolving the titanium sulfate in deionized water under the condition that the volume ratio of the titanium sulfate to the deionized water is 1:6-30; adding the urea into the titanium sulfate solution, and stirring to obtain a mixed solution; soaking the cotton fabric into the mixed solution for 10-40min; putting the cotton fabric into a high-temperature and high-pressure reaction kettle for treating for 1.5-3h at the constant temperature of 130-160 DEG C; taking out the cotton fabric; washing the cotton fabric with washing liquid for 10-20min at 70-90 DEG C according to the bath ratio of 1:30-50; repeatedly washing the cotton fabric with hot water and cold water; and then, drying or naturally airing the cotton fabric to obtain the modified cotton fabric. The method of the invention is safe and pollution-free, has high production efficiency and saves raw materials; and the modified cotton fabric has good anti-ultraviolet and anti-bacterial properties and washing resistance.
Description
Technical field
The invention belongs to function textile material technical field, relate to a kind of method of modifying of surface of cotton fabric, be specifically related to a kind of method that adopts titanium sulfate and urea surface of cotton fabric to be carried out modification.
Background technology
Nanometer titanic oxide material has good photocatalytic activity and electrical property; In fields such as photocatalysis, dyestuff, Industrial Catalysis, lithium rechargeable battery material and photoactivate battery, obtained using widely; But nano-titanium dioxide powder is reunited easily; Cause photocatalytic activity to reduce, other performance is also had very big influence.Therefore the high-quality nanometer titanic oxide material of synthetic single dispersion is the emphasis of people's research in recent years.Preparation nano-titanium dioxide powder method mainly contains sol-gal process, sluggish precipitation, micro emulsion method and hydro-thermal method etc. at present; Wherein hydrothermal technique has shown comparatively broad development prospect; This is because reaction occurs in the airtight system, does not have the introducing of other impurity, and temperature is low during preparation, the time short; The titanium dioxide nanoparticle purity height that obtains, good dispersion, uniform particles, crystal grain are grown complete, controllable shapes, and can be accessed desirable stoichiometric composition material.COTTON FABRIC enjoys people to like with its good permeability and comfort, but its uvioresistant and anti-microbial property are bad, therefore uses to be very limited.
The application of nano material in textile industry at present mainly realizes through co-blended spinning and back two kinds of methods of arrangement.The shortcoming of blending method is the preparation process more complicated of nano-powder, and particle is very easily reunited, and is wrapped in fibrous inside and can not fully contacts with oxygen, moisture, and function can not be brought into play fully; Use the afterfinish method of resin binder fairly simple, but adhesive also forms parcel to nano particle, influences the performance of function, and physical and mechanical properties such as fabric feeling obviously descend.There is the scholar to form zinc oxide crystal seed on the cotton fiber surface earlier, adopts the diauxic growth method again,, obtain a certain size zinc oxide nano rod on the cotton fiber surface through the growth of hydro-thermal reaction promotion crystal; Or adopt silicon dioxide gel that COTTON FABRIC is carried out preliminary treatment, under the low-temperature hydrothermal condition, realized the one-step method on the throne growth of nano zine oxide on the cotton fiber surface through zinc nitrate and hexa reaction; Or earlier nano particle is dispersed in the dressing liquid processing such as again COTTON FABRIC is flooded (rolling), preliminary drying and bake; Or the preparation nano titanic oxide sol is put in order COTTON FABRIC more earlier; Or the employing radio frequency magnetron sputtering method, at surface of cotton fabric deposition of titanium oxide function nano structure sheaf.Said method or can not to solve load layer well even inadequately, fine and close, nanoparticulate dispersed property is poor, combines problems such as fastness is not high with fiber, or instrument and equipment is expensive, and processing cost is higher, can not satisfy needs of production.
Summary of the invention
The purpose of this invention is to provide a kind of method that adopts titanium sulfate and urea that surface of cotton fabric is carried out modification, providing cotton fabric uvioresistant, antibiotic function solve the existing problem that coating COTTON FABRIC washing durability is poor, gas permeability is poor, feel is bad.
The technical scheme that the present invention adopted is, a kind of method that adopts titanium sulfate and urea that surface of cotton fabric is carried out modification is specifically implemented according to following steps:
Step 1: the COTTON FABRIC that will treat modification under 80 ℃ of conditions, use respectively deionized water and concentration be 95% absolute ethyl alcohol repeatedly sonic oscillation clean dry for standby;
Step 2: according to mass ratio is that 3:2～10 take by weighing cotton fabric processed and the titanium sulfate that step 1 obtains, and is that 0.1～0.5:1 takes by weighing urea according to the mol ratio of titanium sulfate and urea, is 1:6～30 according to the volume ratio of titanium sulfate and deionized water; The titanium sulfate that takes by weighing is dissolved in deionized water, obtains titanium sulfate solution, the urea that takes by weighing is joined in the titanium sulfate solution; Vigorous stirring; Obtain mixed solution, the cotton fabric processed that takes by weighing is immersed in 10～40min in the mixed solution, the mixed solution that will be impregnated with COTTON FABRIC is then put into high-temperature high-pressure reaction kettle; Be filled to 80% of agitated reactor volume with deionized water; Sealing is handled 1.5～3h with agitated reactor constant temperature under 130～160 ℃ of conditions of good seal, and reaction finishes the back and takes out COTTON FABRIC;
Step 3: will go up the reacted COTTON FABRIC that obtains of step, and with the bath raio of 1:30～50, under 70～90 ℃ of conditions, with cleaning solution washing 10～20min, use heat, cold water cyclic washing then, oven dry or dry naturally obtains the COTTON FABRIC after the modification.
Characteristics of the present invention also are,
The cleaning solution in the step 3 wherein is by the solid soap flakes of 2g/L, the water-soluble composition of soda ash of 2g/L.
The invention has the beneficial effects as follows, use titanium sulfate and urea under hydrothermal condition directly in COTTON FABRIC fiber surface load nano-titanium dioxide film, providing cotton fabric uvioresistant and antibiotic function; Through control reaction temperature and time; The technological parameters such as consumption of COTTON FABRIC, titanium sulfate and urea are optimized and best modification technology, and this method is saved raw material; Easy and simple to handle, washing durability is excellent.Test result shows that the COTTON FABRIC after titanium sulfate is urea-modified still has good uvioresistant and anti-microbial property through after 30 washings.
Description of drawings
Fig. 1 is the urea-modified preceding stereoscan photograph of COTTON FABRIC titanium sulfate;
Fig. 2 be adopt the inventive method to the COTTON FABRIC titanium sulfate stereoscan photograph after urea-modified;
Fig. 3 is the X-ray diffraction spectrogram after adopting the inventive method to COTTON FABRIC titanium sulfate urea water heat modification;
Fig. 4 is the forward and backward ultraviolet reflection curve of spectrum of the embodiment of the invention 1 middle cotton fabric-modifying;
Fig. 5 is the forward and backward ultraviolet reflection curves of spectrum of the embodiment of the invention 2 middle cotton fabric-modifyings;
Fig. 6 is the forward and backward ultraviolet reflection curves of spectrum of the embodiment of the invention 3 middle cotton fabric-modifyings.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.
The method that the present invention adopts titanium sulfate and urea that surface of cotton fabric is carried out modification, specifically implement according to following steps:
Step 1: the COTTON FABRIC that will treat modification under 80 ℃ of conditions, use respectively deionized water and concentration be 95% absolute ethyl alcohol repeatedly sonic oscillation clean dry for standby then;
Step 2: according to mass ratio is that 3:2～10 take by weighing cotton fabric processed and the titanium sulfate that step 1 obtains, and is that 0.1～0.5:1 takes by weighing urea according to the mol ratio of titanium sulfate and urea, is 1:6～30 according to titanium sulfate and deionized water volume ratio; The titanium sulfate that takes by weighing is dissolved in deionized water, obtains titanium sulfate solution, the urea that takes by weighing is joined in the titanium sulfate solution; Vigorous stirring; Obtain mixed solution, the cotton fabric processed that takes by weighing is immersed in 10～40min in the mixed solution, the mixed solution that will be impregnated with COTTON FABRIC is then put into high-temperature high-pressure reaction kettle; And be filled to 80% of agitated reactor volume with deionized water; Sealing is handled 1.5～3h with agitated reactor constant temperature under 130～160 ℃ of conditions of good seal, and reaction finishes the back and takes out COTTON FABRIC;
Step 3: will go up the reacted COTTON FABRIC that obtains of step, and with the bath raio of 1:30～50, under 70～90 ℃ of conditions, with cleaning solution washing 10～20min, use heat, cold water cyclic washing then, oven dry or dry naturally obtains the COTTON FABRIC after the modification.Cleaning solution wherein is by the solid soap flakes of 2g/L, the water-soluble composition of soda ash of 2g/L.
Fig. 1 and Fig. 2 are respectively the urea-modified forward and backward stereoscan photographs of COTTON FABRIC titanium sulfate.Can find out that COTTON FABRIC is through after the modification of titanium sulfate urea surface, fiber surface has coated one deck nano-titanium dioxide film.Fig. 3 is the COTTON FABRIC X-ray diffraction spectrogram behind the titanium sulfate urea water heat modification.Can find out that this nano-titanium dioxide film is a Detitanium-ore-type.The crystalline structure energy gap of anatase-type nanometer titanium dioxide is greater than the crystalline structure of rutile ore type; Thereby the hole-electron pair that anatase crystal is produced has corrigendum and more negative current potential; Therefore for most of light-catalyzed reaction systems, the nano-titanium dioxide film of Detitanium-ore-type has advantages of high catalytic activity.
COTTON FABRIC after urea-modified washs and dryly (selects A type washing machine for use to titanium sulfate according to standard GB/T 8629-2001 " textiles is tested with home washings and drying program "; The 4A washing procedure; A type drying program), and according to standard GB/T 18830-2009 " evaluation of ultraviolet resistance of fabric " measure the COTTON FABRIC ultraviolet resistance of titanium sulfate after urea-modified.Through after the 30 substandards washings, the COTTON FABRIC after the modification the spectral transmittance T of UVB and UVA wave band 3.0%, UPF UPF>55, can be used as the antiultraviolet product.
Measure the COTTON FABRIC antibacterial effect of titanium sulfate after urea-modified according to standard GB/T 20944.2-2007 " the evaluation part 2 of antibacterial textile performance: absorption process ".All more than 96%, the COTTON FABRIC after titanium sulfate is urea-modified has antibacterial effect to COTTON FABRIC after titanium sulfate is urea-modified to the bacteriostasis rates of staphylococcus aureus (ATCC6538) and Escherichia coli (8099).
Titanium sulfate and amount of urea ratio, hydrothermal temperature and time all affect product crystalline phase, crystallization degree, pattern and particle size.When COTTON FABRIC and titanium sulfate mass ratio were 3:2～10, fiber surface can coat certain thickness film, and nano particle combines comparatively firm with cotton fiber, tangible agglomeration can not take place, and also can not deposit too many titanium dioxide granule in the solution; When less than 3:2, titanium sulfate and amount of urea are excessive, are prone to cause waste, and nano titanium oxide is many to be deposited on the solution bottom with Granular forms, and the fiber surface adhesion amount obviously reduces, and fastness is bad, and the fabric after the processing in use nano particle comes off easily; When greater than 3:10, though in the solution residual titanium dioxide nanoparticle seldom, the titanium dioxide amount that fiber surface adheres to does not form continuous films very little, antiultraviolet and anti-microbial property are affected.When the mol ratio of titanium sulfate and urea is 0.1～0.5:1; Can obtain the anatase-phase nano titanium dioxide particle; The activity of titanium dioxide weakens along with the increase of crystal particle scale, and crystallite dimension is reduced to nanoscale can make energy gap increase, thus make light in the hole h
+With electronics e
-In have stronger oxidisability and reducibility, the nano particle yardstick is less than the mean free path of carrier, thereby reduced the compound of electronics and hole in the transition process; When less than 0.1:1, amount of urea is relatively large, and the solution degree of supersaturation increases in course of reaction, and forming core speeds up; The nucleus quantity that produces increases, because competition mechanism, with this understanding, grain growth is slow; Grain size will be more little, but the increase of pH value of solution value is serious to the cotton fiber damage; When greater than 0.5:1, the titanium sulfate consumption is more relatively, and the solution degree of supersaturation is on the low side, predecessor titanium sulfate hydrolysis aggravation, and grain growth is accelerated, and grain size increases, and is easy to generate agglomeration.When temperature of reaction kettle is 130～160 ℃, can prepare nanoscale anatase phase titanium dioxide particle; When being higher than 160 ℃; Crystal growth rate is accelerated, and nucleation process is an exothermic process, and the rising of temperature will be unfavorable for that hydrolysis carries out to the nucleation direction; Make in the system nucleus quantity less relatively, and the rising of temperature also can cause can stable existence critical nucleus size increase; When being lower than 130 ℃, can not synthesizing anatase phase nano-titanium dioxide product.The hydro-thermal reaction time can be prepared the Nano titanium dioxide particle when being 1.5～3h; When greater than 3h, titanium dioxide nucleus growth time lengthening, crystal is grown up gradually, and specific area then decreases, and crystallite dimension obviously increases, fastness and serviceability that influence combines with fiber; When less than 1.5h, can not guarantee the growth of titanium dioxide nanocrystalline at short notice.
Embodiment 1
Take by weighing the COTTON FABRIC of 14.4g respectively, the titanium sulfate of 9.6g and the urea of 24g.COTTON FABRIC uses deionized water and ethanol solution under 50KHz power 100W condition the sonic oscillation washing 30min of 80 ℃ of volume ratios of temperature as 1:1,60 ℃ of oven dry.Titanium sulfate is dissolved in the deionized water of 300ml, and adds the urea vigorous stirring, add COTTON FABRIC dipping 10min immediately; The COTTON FABRIC that dipping is good is put into the high-temperature high-pressure reaction kettle of 500ml together with the titanium sulfate urea liquid, and is filled to 80% of agitated reactor volume with deionized water, and agitated reactor constant temperature under 130 ℃ of conditions of good seal is handled 1.5h.After last question response finishes, with the soap flakes of 2g/L, the soda ash of 2g/L, the 1:30 bath raio is handled COTTON FABRIC 15min under 90 ℃ of conditions, then with 90 ℃ of hot water, cold water cyclic washing, 60 ℃ of oven dry.Fig. 4 is that COTTON FABRIC adopts the forward and backward ultraviolet reflection curve of spectrum of above-mentioned process modification.Can find out; COTTON FABRIC after the modification is through after 30 washings; (280～315nm) ultraviolet average reflectances drop to 3.9% by 34.8% to the UVB wave band; Promptly ultraviolet absorbability has been improved approximately 31%, and the ultraviolet average absorption ability of UVA wave band (315～400 nm) has been improved 14.4%.
COTTON FABRIC after urea-modified washs and dryly (selects A type washing machine for use to titanium sulfate according to standard GB/T 8629-2001; The 4A washing procedure; A type drying program), and according to standard GB/T 18830-2009 measure the COTTON FABRIC ultraviolet resistance of titanium sulfate after urea-modified.After 30 washings, the COTTON FABRIC after the modification is at the spectral transmittance T=2.9% of UVB and UVA wave band, UPF UPF=56.According to the COTTON FABRIC antibacterial effect after standard GB/T 20944.2-2007 mensuration titanium sulfate is urea-modified.COTTON FABRIC after the modification is 96.2% to the bacteriostasis rate of staphylococcus aureus (ATCC6538), is 97.3% to the bacteriostasis rates of Escherichia coli (8099), has antibacterial effect.
Embodiment 2
Take by weighing the COTTON FABRIC of 14.4g respectively, the titanium sulfate of 48g and the urea of 24g.COTTON FABRIC uses deionized water and ethanol solution under 50KHz power 100W condition the sonic oscillation washing 30min of 80 ℃ of volume ratios of temperature as 1:1,60 ℃ of oven dry.Titanium sulfate is dissolved in the deionized water of 300ml, and adds the urea vigorous stirring, add COTTON FABRIC dipping 40min immediately; The COTTON FABRIC that dipping is good is put into the high-temperature high-pressure reaction kettle of 500ml together with titanium sulfate solution, and is filled to 80% of agitated reactor volume with deionized water, and the agitated reactor of good seal is handled 3h under 160 ℃ of conditions.After last question response finishes, with the soap flakes of 2g/L, the soda ash of 2g/L, the 1:30 bath raio is handled COTTON FABRIC 15min under 90 ℃ of conditions, then with 90 ℃ of hot water, cold water cyclic washing, 60 ℃ of oven dry.Fig. 5 is that COTTON FABRIC adopts the forward and backward ultraviolet reflection curve of spectrum of above-mentioned process modification.Can find out that the COTTON FABRIC after the modification has improved 31.3% through after 30 washings to the ultraviolet average absorption ability of UVB wave band (280～315 nm), and the ultraviolet average absorption ability of UVA wave band (315～400 nm) has been improved 27.1%.But because treatment temperature is higher, the fabric intensity damage is bigger.
COTTON FABRIC after urea-modified washs and dryly (selects A type washing machine for use to titanium sulfate according to standard GB/T 8629-2001; The 4A washing procedure; A type drying program), and according to standard GB/T 18830-2009 measure the COTTON FABRIC ultraviolet resistance of titanium sulfate after urea-modified.After 30 washings, the COTTON FABRIC after the modification is at the spectral transmittance T=2.8% of UVB and UVA wave band, UPF UPF=58.According to the COTTON FABRIC antibacterial effect after standard GB/T 20944.2-2007 mensuration titanium sulfate is urea-modified.COTTON FABRIC after the modification is 98.4% to the bacteriostasis rate of staphylococcus aureus (ATCC6538), is 99.2% to the bacteriostasis rates of Escherichia coli (8099), has antibacterial effect.
Embodiment 3
Take by weighing the COTTON FABRIC of 14.4g respectively, the titanium sulfate of 24g and the urea of 24g.COTTON FABRIC uses deionized water and ethanol solution under 50KHz power 100W condition the sonic oscillation washing 30min of 80 ℃ of volume ratios of temperature as 1:1,60 ℃ of oven dry.Titanium sulfate is dissolved in the deionized water of 300ml, and adds the urea vigorous stirring, add COTTON FABRIC dipping 40min immediately; The COTTON FABRIC that dipping is good is put into the high-temperature high-pressure reaction kettle of 500ml together with titanium sulfate solution, and is filled to 80% of agitated reactor volume with deionized water, and the agitated reactor of good seal is handled 2h under 140 ℃ of conditions.After last question response finishes, with the soap flakes of 2g/L, the soda ash of 2g/L, the 1:30 bath raio is handled COTTON FABRIC 15min under 90 ℃ of conditions, then with 90 ℃ of hot water, cold water cyclic washing, 60 ℃ of oven dry.Fig. 6 is that COTTON FABRIC adopts the forward and backward ultraviolet reflection curve of spectrum of above-mentioned process modification.Can find out that the COTTON FABRIC after the modification is through after 30 washings, (280～315nm) ultraviolet average absorption abilities have improved 27.6%, and (315～400nm) ultraviolet average absorption abilities have improved 15.7% to the UVA wave band to the UVB wave band.
COTTON FABRIC after urea-modified washs and dryly (selects A type washing machine for use to titanium sulfate according to standard GB/T 8629-2001; The 4A washing procedure; A type drying program), and according to standard GB/T 18830-2009 measure the COTTON FABRIC ultraviolet resistance of titanium sulfate after urea-modified.After 30 washings, the COTTON FABRIC after the modification is at the spectral transmittance T=2.9% of UVB and UVA wave band, UPF UPF=56.According to the COTTON FABRIC antibacterial effect after standard GB/T 20944.2-2007 mensuration titanium sulfate is urea-modified.COTTON FABRIC after the modification is 97.9% to the bacteriostasis rate of staphylococcus aureus (ATCC6538), is 99.0% to the bacteriostasis rates of Escherichia coli (8099), has antibacterial effect.
The inventive method; Use titanium sulfate and urea under hydrothermal condition directly at COTTON FABRIC fiber surface load nano-titanium dioxide film; Studied COTTON FABRIC, titanium sulfate and amount of urea, parameters such as reaction temperature and time are to the influence of load effect, optimize optimization process technology.Test result shows that the COTTON FABRIC after the modification has good uvioresistant and anti-microbial property, and wash resistant.This process safety is pollution-free, and production efficiency is high, and is easy and simple to handle, saves raw material, simultaneously to fabric feeling and not obviously influence of wearability such as ventilative.
Claims (1)
1. one kind is adopted titanium sulfate and urea to the method that surface of cotton fabric carries out modification, it is characterized in that, specifically implements according to following steps:
Step 1: the COTTON FABRIC that will treat modification under 80 ℃ of conditions, use respectively deionized water and concentration be 95% absolute ethyl alcohol repeatedly sonic oscillation clean dry for standby;
Step 2: according to mass ratio is that 3:2～10 take by weighing cotton fabric processed and the titanium sulfate that step 1 obtains, and is that 0.1～0.5:1 takes by weighing urea according to the mol ratio of titanium sulfate and urea, is 1:6～30 according to the volume ratio of titanium sulfate and deionized water; The titanium sulfate that takes by weighing is dissolved in deionized water, obtains titanium sulfate solution, the urea that takes by weighing is joined in the titanium sulfate solution; Vigorous stirring; Obtain mixed solution, the cotton fabric processed that takes by weighing is immersed in 10～40min in the mixed solution, the mixed solution that will be impregnated with COTTON FABRIC is then put into high-temperature high-pressure reaction kettle; Be filled to 80% of agitated reactor volume with deionized water; Sealing is handled 1.5～3h with agitated reactor constant temperature under 130～160 ℃ of conditions of good seal, and reaction finishes the back and takes out COTTON FABRIC;
Step 3: will go up the reacted COTTON FABRIC that the step obtains; With the bath raio of 1:30～50, under 70～90 ℃ of conditions,, use heat, cold water cyclic washing then with cleaning solution washing 10～20min; The oven dry or dry naturally; Obtain the COTTON FABRIC after the modification, described cleaning solution is by the solid soap flakes of 2g/L, the water-soluble composition of soda ash of 2g/L.
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| CN102277723B (en) * | 2011-06-22 | 2012-12-19 | 西安工程大学 | Method for preparing nano titanium dioxide thin film on surface of dacron |
| CN102277725B (en) * | 2011-06-22 | 2013-01-09 | 西安工程大学 | Method for modifying wool fabric by butyl titanate |
| CN102899884B (en) * | 2012-10-18 | 2014-07-02 | 西安工程大学 | Nanometer titanium dioxide cotton fiber modifying method with improved dyeing property and attachment firmness |
| CN103882681B (en) * | 2014-02-21 | 2016-09-14 | 宁波天河生态水景科技有限公司 | A kind of method that titanium dichloride load macromolecular fibre is prepared in hydro-thermal injection |
| CN107604495B (en) * | 2017-09-21 | 2020-07-14 | 阜阳恒泰纺织有限公司 | Wear-resistant and heat-resistant blended yarn |
| CN108130711B (en) * | 2017-12-26 | 2021-01-01 | 中南大学 | TiO based on fiber substrate2Nano array and preparation method thereof |
| CN108823961A (en) * | 2018-05-21 | 2018-11-16 | 合肥云都棉花有限公司 | A kind of modified cotton fiber and its non-ironing cloth of preparation |
| CN109112832A (en) * | 2018-07-31 | 2019-01-01 | 澳洋集团有限公司 | A kind of method of collagen-Compound-acid modified cotton fabric |
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Effective date of registration: 20131231 Address after: 315206, No. two, 1 East Road, camel street, Zhenhai District, Zhejiang, Ningbo Patentee after: Bros Eastern Co., Ltd. Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 19 Patentee before: Xi'an Engineering Univ. |