CN102352549A - Multifunctional fabric with UV shielding and durable superhydrophobic properties and preparation method - Google Patents
Multifunctional fabric with UV shielding and durable superhydrophobic properties and preparation method Download PDFInfo
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Abstract
The invention belongs to the technical field of functional textile materials, and relates to a multifunctional fabric with ultraviolet shielding and lasting superhydrophobic performance and a preparation method thereof. Modifying the surface of the fabric with an inorganic nano-particle coating, then coating the inorganic nano-particle coating with an inert oxide barrier layer, and finally performing surface hydrophobic functional modification on the fabric. In view of the inhibiting effect of the inert oxide barrier layer on the photosensitivity of the inorganic nano particles, the manufactured fabric material shows lasting superhydrophobic performance under strong ultraviolet irradiation for a long time, and the ultraviolet shielding index of the manufactured fabric is more than 100. The prepared multifunctional fabric with ultraviolet shielding and lasting superhydrophobic performance can be applied to the fields of medicine, military, biology, photoelectron industry and the like.
Description
Technical field
The invention belongs to function textile material technical field, relate to multifunctional fabric of a kind of UV-preventing and lasting ultra-hydrophobicity and preparation method thereof.
Background technology
Continuous deterioration along with earth environment; Ultraviolet content in the sunshine increasing all the more; Consider the uv damage that strengthens day by day; And in the special requirement of some field people to ultraviolet protection and water-proof function, a kind of multifunctional fabric with UV-preventing and water resistance will have important use to be worth in real life.
Generally, people modify the effect that " ultraviolet filtering layer " reaches its ultraviolet protection at fabric face.The material of this " optical filtering property " mainly comprises organic compound that some can absorbing ultraviolet light and ultraviolet light is had the inorganic nano-particle of strong reflection, scattering and sink effect.Organic type ultra-violet absorber has limited its range of application significantly because it has certain toxicity and relatively poor heat endurance.TiO
2, inorganic wide band gap semiconducter such as ZnO is as good ultraviolet absorption material, is applied to the anti-UV coating field of textiles widely by people.Use TiO at present
2, nano particle such as ZnO is modified fabric face has manyly with the research that obtains the uvioresistant textiles, but the multi-functional fabric that has UV-preventing and super hydrophobic functional concurrently rarely has report.A super-hydrophobic surface need possess high surface roughness and low surface free energy simultaneously, if to TiO
2, the fabric modified of inorganic nano-particle such as ZnO carries out hydrophobization and handles, and can obtain hydrophobic surface, realizes the UV-preventing of fabric and hydrophobic bi-functional.But in practical application, TiO
2, nano particle such as ZnO exists certain drawback; That is exactly their light sensitivity, and under the irradiation of ultraviolet light, they are easy to the hydrophobization processing layer that it is surperficial and decompose; And then cause hydrophobicly to hydrophilic conversion, can't obtain long-term, stable ultra-hydrophobicity.
Summary of the invention
The present invention is directed to the problems referred to above that exist in the background technology, propose a kind of preparation method with UV-preventing and multifunctional fabric of lasting ultra-hydrophobicity.Make this method have characteristics such as easy and simple to handle, cost savings, synthesis condition gentleness.The fabric ultraviolet screener index that obtains is high, and ultra-hydrophobicity is good, under for a long time strong UV-irradiation, demonstrates the super-hydrophobicity of lasting stability.
UV-preventing of the present invention with the preparation method of the multifunctional fabric of lasting ultra-hydrophobicity is:
1, in the inorganic nanoparticles coating that has the ultraviolet radiation absorption characteristic through the fabric fibre surface preparation of clean;
2, coat the indifferent oxide barrier layer on the inorganic nanoparticles surface;
3, the organic matter with low-surface-energy carries out surface-hydrophobicized functionalized modification to previous materials, makes the multifunctional fabric with UV-preventing and lasting ultra-hydrophobicity.
The described method that has an inorganic nanoparticles coating of ultraviolet radiation absorption characteristic in the fabric fibre surface preparation is; The fabric of cleaning was soaked 1-48 hour in the inorganic nano-particle colloidal sol of known synthetic method; After taking out oven dry; It is inserted be equipped with in the closed reactor of inorganic metal Yanyuan that concentration is 1 mM/liter-1 mol, under 80-180 ℃ solvent thermal condition, reacted 1-48 hour; Utilize the hydrolysis of inorganic metal salt and the dissolving recrystallization process of inorganic nano-particle, growth inorganic nanoparticles on the throne on the fabric fibre surface.The ultraviolet inorganic nanoparticles of described absorption can be selected TiO for use
2Or ZnO, described inorganic metal Yanyuan is optional with zinc source or titanium source, and the zinc source can be zinc nitrate, zinc acetate, zinc chloride, zinc sulfate, zinc acetylacetonate etc., and the titanium source can be titanium tetrachloride, butyl titanate, isopropyl titanate, titanium peroxide etc.The pattern of nano particle can be multiple shapes such as particle, rod, line.
Describedly can select Al for use on the surface coated indifferent oxide of inorganic nanoparticles barrier layer
2O
3Or SiO
2The method of its coating is; The fabric of preparation organic/inorganic nano particle coating immersed have in the polyelectrolyte solution of electric charge, soaked 5 minutes-24 hours, after again its immersion is had in the solution of silicate, silane reagent, aluminate, meta-aluminate, three aluminium secondary butylates etc. of 0.1 mM/liter-1 mol of opposed surface electric charge; Soaked 5 minutes-24 hours, and utilized the Electrostatic Absorption effect of material to coat the indifferent oxide barrier layer on the inorganic nanoparticles surface.
Described method of previous materials being carried out surface-hydrophobicized functionalized modification with the organic matter of low-surface-energy is that previous materials is inserted in the sealed high pressure agitated reactor that low-surface-energy organic matter drop is housed; 90-180 ℃ was heated 1-5 hour down, utilized vapour deposition at material surface absorption low-surface-energy organic molecule layer.The organic matter of described low-surface-energy can be selected triethoxy-1H, 1H, 2H for use; 2H-13 fluoro-N-octyl group silane (1H, 1H, 2H; 2H-Perfluorooctyltriethoxysilane, POTS), fluoroalkyl silane (fluoroalkylsilane; FAS), and the octadecyl trimethoxy silane (octadecyltrimethoxysilane, OTS); Perfluorononane (perfluorononane), and the dimethyl polysiloxane of mono-vinyl end-blocking (poly (dimethysiloxane) vinyl terminated, PDMSVT) etc.
The present invention modifies at fabric face and absorbs ultraviolet inorganic nanoparticles (TiO
2Or ZnO) to obtain the UV-preventing characteristic of fabric, utilize the hydrophobic performance of inorganic nanoparticles deposition simultaneously to the change raising fabric of fabric face roughness, compare with traditional handicraft, the present invention has the inorganic nanoparticles (TiO of ultraviolet radiation absorption characteristic
2Or ZnO) surface coats the indifferent oxide layer, on the basis that keeps material UV-preventing character, utilizes indifferent oxide layer (Al
2O
3Or SiO
2) to TiO
2Or the inhibitory action of the uv photosensitivity of ZnO inorganic nanoparticles, can stop TiO
2Or ZnO etc. realizes anti-ultraviolet lasting super-hydrophobicity to the decomposition of the organic matter hydrophobically modified layer of its finishing.The fabric that the inventive method makes; At for a long time strong ultraviolet light down under the irradiation, its contact angle value that water droplet is tested is greater than 150 °, simultaneously; The ultraviolet screener index (UPF) of the fabric that makes is greater than 100, far above country's value of defining (UPF＞50) to high ultraviolet protection performance fabric.In the present invention; We can change the roughness of fabric face through the pattern of regulation and control inorganic nanoparticles; And then the hydrophobic performance of adjusting fabric; Through changing kind, thickness and the compactness of the experiment parameter change indifferent oxide layer in the indifferent oxide coating process, to change the uvioresistant hydrophobic performance of fabric.UV-preventing of the present invention is simple with the preparation method of the multifunctional fabric of lasting ultra-hydrophobicity, and preparation condition is gentle, and cost is low, and the multi-functional fabric that obtains of method can be applicable to a plurality of fields such as medical science, military affairs, biology and optoelectronics industry thus.
Description of drawings
Accompanying drawing 1 is multifunctional fabric preparation flow figure;
Accompanying drawing 2 is the spectrogram that sees through of multifunctional fabric;
Accompanying drawing 3 is for dropping in the lip-deep water droplet photo of multifunctional fabric under long-time strong UV-irradiation.
The specific embodiment
Embodiment 1:
Step 1: the fabric of cleaning is placed in the colloidal sol with the ZnO nano particle of sol-gel method preparation soaked 1 hour, take out put into after the oven dry be equipped with 1 mM/liter the agitated reactor of zinc acetate solution, 80 ℃ of reactions 1 hour; After reaction is accomplished; Sample takes out, and cleans 20 ℃ of dry for standby.The fabric that obtains for the modification of ZnO nano particle.
Can zinc acetate be replaced to zinc nitrate, zinc chloride, zinc sulfate, zinc acetylacetonate etc.
Step 2: the fabric that step 1 is made immerses in the PEI polyelectrolyte solution, soaked 5 minutes, after the taking-up again with its immerse 0.1 mM/liter sodium silicate solution in, soaked 5 minutes, take out the back and wash, dry, obtain ZnO nanoparticle surface coated Si O
2The fabric of monolayer.
Can sodium metasilicate be replaced to ethyl orthosilicate, 3-aminopropyl triethoxysilane etc., can PEI be replaced to PDDA.
Step 3: the fabric that step 2 is made is inserted and triethoxy-1H is housed, 1H, 2H; 2H-13 fluoro-N-octyl group silane (1H, 1H, 2H; 2H-Perfluorooctyltriethoxysilane, POTS) in the sealed high pressure agitated reactor of drop, 90 ℃ were heated 1 hour down; Take out washing then, dry, obtain the fabric of hydrophobic functionization.
Can be with triethoxy-1H, 1H, 2H, 2H-13 fluoro-N-octyl group silane (1H; 1H, 2H, 2H-Perfluorooctyltriethoxysilane, POTS) drop replaces to fluoroalkyl silane (fluoroalkylsilane; FAS), and the octadecyl trimethoxy silane (octadecyltrimethoxysilane, OTS); Perfluorononane (perfluorononane), and the dimethyl polysiloxane of mono-vinyl end-blocking (poly (dimethysiloxane) vinyl terminated, PDMSVT) etc.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) is 2.31% to the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is 149.7 °.
Embodiment 2:
Step 1: change the colloidal sol soak time among the embodiment 1 into 12 hours; Zinc acetate concentration change into 50 mMs/liter; Reaction temperature changes 100 ℃ into; Reaction time changes 12 hours into, and remaining reaction process and condition are constant, obtains the fabric of the ZnO nano particle modification of ZnO nano-particles size and distribution density increase.
Step 2: on the basis of embodiment 1, repeat the operation of 10 secondary responses, promptly implement 10 alternating deposits of PEI and sodium metasilicate, obtain multilayer SiO
2The fabric that the ZnO nano particle that particle layer coats is modified.
Step 3: change the reaction temperature among the embodiment 1 into 120 ℃, the reaction time changes 2 hours into, and remaining reaction process and condition are constant, obtains the fabric of hydrophobic functionization
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) is 1.75% to the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is 150.8 °.
Embodiment 3:
Step 1: change the colloidal sol soak time among the embodiment 1 into 24 hours; Zinc acetate concentration changes 0.5 mol into; Reaction temperature changes 150 ℃ into; Reaction time changes 24 hours into, and remaining reaction process and condition are constant, obtains the further fabric of the ZnO nano particle modification of increase of ZnO nano-particles size and distribution density.
Step 2: with embodiment 1 mesosilicic acid na concn replace with 100 mMs/liter, soak time replaces with 12 hours, remaining reaction process and condition are constant, obtain the ZnO nanoparticle surface and coat fine and close SiO
2The fabric of monolayer.
Step 3: change the reaction temperature among the embodiment 1 into 150 ℃, the reaction time changes 3 hours into, and remaining reaction process and condition are constant, obtains the fabric of hydrophobic functionization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) is 1.52% to the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is 151.2 °.
Embodiment 4:
Step 1: change the colloidal sol soak time among the embodiment 1 into 48 hours; Zinc acetate concentration changes 1 mol into; Reaction temperature changes 180 ℃ into; Reaction time changes 48 hours into, and remaining reaction process and condition are constant, obtains the further fabric of the ZnO nano particle modification of increase of ZnO nano-particles size and distribution density.
Step 2: with embodiment 1 mesosilicic acid na concn replace with 0.5 mM/liter, soak time replaces with 24 hours, remaining reaction process and condition are constant, obtain the ZnO nanoparticle surface and coat fine and close SiO
2The fabric of monolayer.
Step 3: change the reaction temperature among the embodiment 1 into 180 ℃, the reaction time changes 5 hours into, and remaining reaction process and condition are constant, obtains the fabric of hydrophobic functionization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) is 1.68% to the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is 151.8 °.
Embodiment 5:
Step 1: the ZnO nanoparticle sol among the embodiment 1 is replaced to TiO
2Nanoparticle sol, zinc acetate changes tetrabutyl titanate into, and remaining reaction process and experiment conversion condition are identical with embodiment 1, embodiment 2, embodiment 3 and embodiment 4, can obtain the TiO of different-grain diameter size and Density Distribution
2The fabric that nano particle is modified.
Can tetrabutyl titanate be replaced to titanium tetrachloride, isopropyl titanate, titanium peroxide etc.
Step 2: course of reaction and condition and embodiment 1, embodiment 2, embodiment 3, embodiment 4 are identical, and any one among optional embodiment 1, embodiment 2, embodiment 3, the embodiment 4 obtains TiO
2Nanoparticle surface coated Si O
2The fabric of layer.
Step 3: course of reaction and condition and embodiment 1, embodiment 2, embodiment 3, embodiment 4 are identical, and any one among optional embodiment 1, embodiment 2, embodiment 3, the embodiment 4 obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 2.5% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 150 °.
Embodiment 6:
Step 1: on the basis of embodiment 1, embodiment 2, embodiment 3, embodiment 4; The fabric that the ZnO nano particle is modified puts into that mol ratio is housed is 1: 1, concentration be 15 mMs/liter the closed reactor of zinc acetate and the mixed solution of hexamethylenetetramine in, reacted 2 hours at 90 ℃; After reaction is accomplished; Sample takes out, and cleans 20 ℃ of dry for standby.The fabric that obtains for the modification of ZnO nanometer rods.
Can zinc acetate be replaced to zinc nitrate, zinc chloride, zinc sulfate, zinc acetylacetonate etc.; Can hexamethylenetetramine be replaced to NaOH, ammoniacal liquor, lithium hydroxide or tetramethyl oxyammonia.
Step 2: course of reaction is identical with embodiment 5 with condition, obtains ZnO nanorod surfaces coated Si O
2The fabric of layer.
Step 3: course of reaction is identical with embodiment 5 with condition, obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 1.5% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 154 °.
Embodiment 7:
Step 1: change the molar concentration rate of zinc acetate among the embodiment 6 and hexamethylenetetramine into 50: 3; The acetic acid zinc concentration change into 120 mMs/liter, reaction temperature changes 150 ℃ into, the reaction time changes 24 hours into; Remaining reaction process and condition are constant, can obtain the fabric that the ZnO nano wire is modified.
Step 2: course of reaction is identical with embodiment 5 with condition, obtains ZnO nanowire surface coated Si O
2The fabric of layer.
Step 3: course of reaction is identical with embodiment 5 with condition, obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 1.3% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 156 °.
Embodiment 8:
Step 1: on the basis of embodiment 5, with TiO
2The fabric that nano particle is modified is put into the closed reactor that tetrabutyl titanate and hydrochloric acid mixed solution are housed, the concentration of tetrabutyl titanate be 5 mMs/liter, the concentration of hydrochloric acid be 10 mMs/liter; 120 ℃ of reactions 2 hours, after reaction was accomplished, sample took out; Clean 20 ℃ of dry for standby.That obtain is TiO
2The fabric that nanometer rods is modified.
Can tetrabutyl titanate be replaced to titanium tetrachloride, isopropyl titanate, titanium peroxide etc.; Can hydrochloric acid be replaced to nitric acid, sulfuric acid, acetic acid, ammoniacal liquor, tetramethyl oxyammonia etc.
Step 2: course of reaction is identical with embodiment 5 with condition, obtains TiO
2Nanorod surfaces coated Si O
2The fabric of layer.
Step 3: course of reaction is identical with embodiment 5 with condition, obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 1.5% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 154 °.
Embodiment 9:
Step 1: with the concentration of the tetrabutyl titanate among the embodiment 8 change into 120 mMs/liter, the concentration of hydrochloric acid change into 100 mMs/liter, reaction temperature changes 150 ℃ into, the reaction time changes 24 hours into, remaining reaction process and condition are constant, can obtain TiO
2The fabric that nano wire is modified.
Step 2: course of reaction is identical with embodiment 5 with condition, obtains TiO
2Nanowire surface coated Si O
2The fabric of layer.
Step 3: course of reaction is identical with embodiment 5 with condition, obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 1.3% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 156 °.
Embodiment 10:
Step 1: course of reaction is identical with embodiment 1～10 with condition, and any one of optional embodiment 1～10 obtains ZnO or TiO
2The fabric that inorganic nanoparticles is modified.
Step 2: change the sodium silicate solution among embodiment 1, embodiment 2, embodiment 3, the embodiment 4 into sodium aluminate solution, remaining reaction process and condition are constant, obtain ZnO or TiO
2The inorganic nanoparticles surface coats Al
2O
3The fabric of layer.
Can sodium metaaluminate be replaced to sodium aluminate, three aluminium secondary butylates etc.
Step 3: course of reaction is identical with embodiment 5 with condition, obtains the fabric of surface hydrophobicity functionalization.
Step 4: with the uv-visible absorption spectra appearance fabric is seen through spectrum test, (280～400nm) less than 2.5% for the ultraviolet mean transmissivity that obtains.To make fabric and be placed on one week of irradiation under the ultraviolet light optical fiber, the back is carried out the surface infiltration property testing with dripping the type analysis appearance to fabric, and the contact angle value of the water droplet of the fabric face that obtains is greater than 150 °.
Claims (9)
1. the UV-preventing and the multi-functional process for making such fabric of ultra-hydrophobicity lastingly is characterized in that concrete steps are following:
(1) fabric of cleaning was soaked 0.5-48 hour in the inorganic nano-particle colloidal sol of known synthetic method; After taking out oven dry; It is inserted be equipped with in the closed reactor of inorganic metal Yanyuan that concentration is 1 mM/liter-1 mol, under 80-180 ℃ solvent thermal condition, reacted 1-48 hour; Utilize the hydrolysis of inorganic metal salt and the dissolving recrystallization process of inorganic nano-particle, growth inorganic nanoparticles on the throne on the fabric fibre surface;
The fabric that (2) will prepare the organic/inorganic nano particle coating immerses and to have in the polyelectrolyte solution of electric charge; Soaked 5 minutes-24 hours; Again its immersion is had in the salting liquid of 0.1 mM/liter-1 mol indifferent oxide of opposed surface electric charge; Soaked 5 minutes-24 hours, and utilized the Electrostatic Absorption effect of material to coat the indifferent oxide barrier layer on the inorganic nanoparticles surface;
(3) last, fabric face is carried out the hydrophobization functionalized modification:
Previous materials is inserted in the sealed high pressure agitated reactor that low-surface-energy organic matter drop is housed, and 90-180 ℃ was heated 1-5 hour down, utilized vapour deposition at material surface absorption low-surface-energy organic molecule layer.
2. according to the UV-preventing of the claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity, it is characterized in that: the ultraviolet inorganic nanoparticles of described suction is selected TiO for use
2Or ZnO, the pattern of nano particle is particle, rod, the multiple shape of line.
3. according to the UV-preventing of claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity; It is characterized in that: described inorganic metal Yanyuan is with zinc source or titanium source; The zinc source is zinc nitrate, zinc acetate, zinc chloride, zinc sulfate, zinc acetylacetonate, and the titanium source is titanium tetrachloride, butyl titanate, isopropyl titanate, titanium peroxide.
4. according to the UV-preventing of claim 1 multi-functional process for making such fabric, it is characterized in that: describedly select Al for use on the surface coated indifferent oxide of inorganic nanoparticles barrier layer with lasting ultra-hydrophobicity
2O
3Or SiO
2
5. according to the UV-preventing of claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity; It is characterized in that: described silicon source reagent is sodium metasilicate, ethyl orthosilicate, 3-aminopropyl triethoxysilane, and described aluminium source reagent is sodium metaaluminate, sodium aluminate, three aluminium secondary butylates.
6. according to the UV-preventing of claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity; It is characterized in that: described alkali is hexamethylenetetramine, NaOH, ammoniacal liquor, lithium hydroxide, tetramethyl oxyammonia, and described acid is hydrochloric acid, nitric acid, sulfuric acid, acetic acid.
7. according to the UV-preventing of the claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity, it is characterized in that: said is that polyelectrolyte is PEI, PDDA.
8. according to the UV-preventing of the claim 1 multi-functional process for making such fabric with lasting ultra-hydrophobicity, it is characterized in that: the described low-surface-energy organic matter that is used for surface-hydrophobicized functionalized modification is triethoxy-1H, 1H, 2H; 2H-13 fluoro-N-octyl group silane 1H, 1H, 2H; 2H-Perfluorooctyltriethoxysilane, POTS, fluoroalkyl silane fluoroalkylsilane; FAS, octadecyl trimethoxy silane octadecyltrimethoxysilane, OTS; Perfluorononane perfluorononane, the dimethyl polysiloxane poly dimethysiloxane vinyl terminated of mono-vinyl end-blocking, PDMSVT.
9. according to the UV-preventing of the preparation method of claim 1 preparation and the multi-functional fabric of lasting ultra-hydrophobicity.
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