CN103114436B - Super-hydrophobic fabric preparation method and super-hydrophobic functional fabric - Google Patents
Super-hydrophobic fabric preparation method and super-hydrophobic functional fabric Download PDFInfo
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- CN103114436B CN103114436B CN201310074506.2A CN201310074506A CN103114436B CN 103114436 B CN103114436 B CN 103114436B CN 201310074506 A CN201310074506 A CN 201310074506A CN 103114436 B CN103114436 B CN 103114436B
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Abstract
The invention relates to a super-hydrophobic fabric preparation method and a super-hydrophobic functional fabric. The method comprises the steps of: step one. preparing stable silicic acid sol; step two. applying the obtained stable silicic acid sol obtained in the step one to the fabric washed by deionized water by steps of soaking, film brushing and drying, and firmly bonding nanoscale silicon dioxide particles on fiber surfaces of the fabric; and step three. modifying organosilane on the surfaces of the silicon dioxide particles obtained in the step two through soaking and drying so as to realize the super-hydrophobic performance, wherein the organosilane at least comprises hexadecyltrimethoxysilane. The invention provides a preparation method of the super-hydrophobic functional fabric with strong adhesive force and environmentally-friendliness; the super-hydrophobic functional fabric prepared by using the method has the function of ultraviolet irradiation resistance and washing resistance; and sodium silicate is used as a raw material in the treatment process of the fabric, and therefore, the production cost is greatly reduced.
Description
Technical field
The present invention relates to preparation method and the corresponding fabric of fabric in a kind of light industry field, particularly relate to a kind of preparation method and super hydrophobic functional fabric of superhydrophobic fabric.
Background technology
The animals and plants of occurring in nature have a lot of peculiar phenomenons, and super hydrophobic surface is wherein a kind of.Vegeto-animal super hydrophobic surface is that the rough surface structure of being wrapped up by wax causes.Wax can make surface have lower surface energy, thereby increases contact angle, and coarse surface texture also can further increase this hydrophobic effect.Because super hydrophobic surface has the properties such as waterproof, anti-pollution, automatically cleaning, thereby enjoys people to pay close attention to.
In prior art, the technology of preparing super hydrophobic surface mainly can be divided into following a few class: the etching method on silicon materials surface, sol-gal process, chemical vapour deposition technique, mechanical stretching method, polymerisation becomes embrane method, template, Electrospinning Method, electrochemical deposition method, and corroding metal method etc.The common feature of these methods is that the surface of preparation has lower surface energy, has again larger roughness, thereby causes it to have super-hydrophobic characteristic simultaneously.But above-mentioned prior art also exists the shortcomings such as equipment complexity, cost costliness, preparation condition harshness, unstable properties.
Summary of the invention
The object of the invention is to propose that a kind of technique is simple, cost is lower, utilize eco-friendly material to prepare the method with ultra-hydrophobicity fabric, make fabric there is uvioresistant and irradiate and wash durability.
For achieving the above object, the invention provides a kind of preparation method of superhydrophobic fabric, described preparation method comprises the steps: step 1, prepares stable silica sol: under continuous stirring condition, in sodium silicate solution, dropwise add nitric acid, regulating PH is 7～9, then continues to stir 1～3h; Step 2, by the silica sol of gained in step 1 by soak-brush film-oven dry step be applied on clean fabric, nano level silica dioxide granule in the fiber surface strong bonded of fabric; Step 3, by soak-dry step gained in step 2 silica particles modify organosilan, realize ultra-hydrophobicity; Described organosilan at least comprises cetyl trimethoxy silane.
Preferably, in described step 1, the concentration of described sodium silicate solution is 10～30g/L, and described nitric acid is preferably the red fuming nitric acid (RFNA) of 11～12mL/L, and certainly, described nitric acid also can be replaced by hydrochloric acid or sulfuric acid.
Preferably, in described step 2, first will in the silica sol of clean fabric gained in step 1, soak 5～30min, then take out; At 60～100 ° of C temperature, dry; Repeat aforesaid operations at least one times, finally dry 4～6h at 60～100 ° of C.
More preferably, in described step 3, it is 6～12h in 2～4% cetyl trimethoxy silane ethanolic solution that the fabric obtaining in step 2 is immersed in to volume fraction, and then dry 6～12h at 60～100 ° of C temperature obtains having the fabric of floride-free super-hydrophobic function.
Another object of the present invention is to provide a kind of super hydrophobic functional fabric, described fabric is to be made by above-mentioned preparation method.
Based on technique scheme, advantage of the present invention is:
The invention provides the preparation method of the stronger and eco-friendly superhydrophobic fabric of a kind of adhesive force, the super hydrophobic functional fabric making by preparation method of the present invention, be not only a kind of floride-free super-hydrophobic function fabric, and, function and the wash fast function of ultraviolet radiation resisting there is; Meanwhile, the present invention selects sodium metasilicate as raw material in fabric processing procedure, has reduced widely production cost, makes application of the present invention stronger; In addition, the colloidal sol in preparation method of the present invention is aobvious neutral, can corrosion failure COTTON FABRIC.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the SEM photo of the prepared super hydrophobic functional fabric face of the present invention;
Fig. 2-1st, the droplet morphology on the prepared super hydrophobic functional fabric of the present invention;
Fig. 2-2nd, the top view of Fig. 2-1;
Fig. 2-3rd, the liquid-drop contact angle on the prepared super hydrophobic functional fabric of the present invention;
Fig. 3 is the ultraviolet radiation resisting performance schematic diagram of the prepared super hydrophobic functional fabric of the present invention;
Fig. 4 is the washing durability schematic diagram of the prepared super hydrophobic functional fabric of the present invention.
Detailed description of the invention
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The preparation method of a kind of superhydrophobic fabric provided by the invention, operation principle of the present invention is: utilize the bionic principle of " lotus leaf effect ", first fabric is carried out to surface treatment, make nano particle evenly firmly be combined in fabric face, make its surface roughening; Again the long chain silane of low-surface-energy is applied on fabric, prepares floride-free super-hydrophobic uvioresistant and irradiate water-wash resistance fabric.
Preparation method of the present invention mainly comprises at least three steps, that is: prepare silica sol, silica sol is applied on fabric and forms nano-scale particle and the nano-scale particle finishing organosilan at fabric, concrete technical scheme refers to following embodiment.
Embodiment 1:
3.76g sodium metasilicate is joined in 400ml deionized water, even by magnetic stirrer, slowly add 2.4ml red fuming nitric acid (RFNA), and constantly stir 2h, obtain hydrosol of silicic acid.Record solution PH=7～8, colloidal sol approaches neutral, can corrosion failure COTTON FABRIC.The red fuming nitric acid (RFNA) that the red fuming nitric acid (RFNA) that the present invention uses is the normal concentration that can buy on market, preferably, described nitric acid is preferably the red fuming nitric acid (RFNA) of 11～12mL/L, and certainly, described nitric acid also can be replaced by hydrochloric acid or sulfuric acid.
COTTON FABRIC is immersed in to 10min in mixing water colloidal sol, and in 80 ° of C drying boxes, dry 15min, repeats aforesaid operations 2 times, finally at the dry 6h of 80 ° of C.It is 12h in 4% cetyl trimethoxy silane ethanolic solution that the COTTON FABRIC of above-mentioned processing is immersed in to volume fraction, under 80 ° of C, dries 12h, obtains floride-free super-hydrophobic function fabric.
Another object of the present invention is to provide a kind of super hydrophobic functional fabric, described fabric is to be made by above-mentioned preparation method.Described fabric can be the various fabrics such as cotton fiber, polyster fibre.In the present embodiment, employing be cotton fiber.
The SEM photo of the super hydrophobic functional fabric face that shown in Fig. 1, said method makes; Liquid in the form of this super hydrophobic functional fabric face and contact angle value as shown in Fig. 2-1, Fig. 2-2 and Fig. 2-3.
In above-mentioned test accompanying drawing, cotton fiber surface coverage of the present invention the particle of size at 50-200nm, form certain roughness.After further modifying by organosilan, obtain good super-hydrophobic effect, contact angle reaches 160.5 °, and can hinder and refuse methylene blue drop.
Fig. 3 and Fig. 4 are ultraviolet radiation resisting performance and the washing durabilitys of prepared super hydrophobic functional fabric.
As seen from the figure, super hydrophobic functional fabric of the present invention still can keep the contact angle of water more than 152 ° at ultraviolet ray irradiation 6h; In washing machine, clean 10 times, and clean after 30min at every turn, still can keep the contact angle of water more than 145 °.
To sum up, the super hydrophobic functional fabric that uses preparation method of the present invention to make, compared with other superhydrophobic fabrics of the prior art, mainly has the following advantages:
(1) the super hydrophobic functional fabric that prepared by the inventive method has the function of ultraviolet radiation resisting.It still can keep the contact angle of water more than 152 ° after ultraviolet ray is irradiated more than 6h, irradiates 40 days under natural sunshine, still can keep the contact angle of water more than 150 °.
(2) the super hydrophobic functional fabric that prepared by the inventive method has wash fast function.Washing machine cleans more than 10 times, cleans 30min at every turn, still can keep the contact angle of water more than 145 °.
(3) fabric that super hydrophobic functional fabric of the present invention makes has after ultraviolet radiation resisting and wash fast function, can adapt to the long-time irradiation of strong sunshine, also can resist washing away for a long time of rainwater, more can adapt to severe natural environment.And can waterproof and dustproof, automatically cleaning, saved a large amount of cleanly and repair expense, manpower and the time of cost, also reduced the pollution of washing agent to environment.
(4) sodium metasilicate that the present invention selects, as raw material, has reduced production cost, and application is stronger.
(5) the present invention has selected without silicon fluoride and has carried out surface treatment, and this organosilan good biocompatibility, can not cause the allergic reaction of skin, and can welding (as Ozone in Atmosphere layer etc.).
(6) the floride-free super-hydrophobic function fabric that prepared by the present invention, can be widely used in high-grade fabric, home decoration, outdoor tent and various waterproof cloth, there are opposing adverse circumstances, permanent durable, super-hydrophobic effect keeps permanent effect, has wide market application foreground.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request protection of the present invention.
Claims (4)
1. a preparation method for superhydrophobic fabric, is characterized in that: described preparation method comprises the steps:
Step 1, prepare stable silica sol: under continuous stirring condition, in sodium silicate solution, dropwise add nitric acid, regulating pH is 7～9, then continues to stir 1～3h;
Step 2, by the silica sol of gained in step 1 by soak-brush film-oven dry step be applied on clean fabric, nano level silica dioxide granule in the fiber surface strong bonded of fabric;
Step 3, by soak-dry step gained in step 2 silica particles modify organosilan, realize ultra-hydrophobicity; Described organosilan at least comprises cetyl trimethoxy silane.
2. the preparation method of superhydrophobic fabric according to claim 1, is characterized in that: in described step 2, first will in the silica sol of clean fabric gained in step 1, soak 5～30min, then take out; At 60～100 DEG C
At temperature, dry; Repeat aforesaid operations at least one times, finally at 60～100 DEG C
Dry 4～6h.
3. the preparation method of superhydrophobic fabric according to claim 1 and 2, it is characterized in that: in described step 3, it is 6～12h in 2～4% cetyl trimethoxy silane ethanolic solution that the fabric obtaining in step 2 is immersed in to volume fraction, then at 60～100 DEG C
At temperature, be dried 6～12h, obtain having the fabric of floride-free super-hydrophobic function.
4. a super hydrophobic functional fabric, is characterized in that: described fabric is to be made by the preparation method described in above-mentioned any one claim.
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Families Citing this family (11)
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| CN103451918B (en) * | 2013-09-03 | 2015-02-25 | 南通大学 | Method for processing fabric of surgical gown with permeability-resisting protection function |
| CN103938432B (en) * | 2014-03-28 | 2016-04-06 | 中国林业科学研究院林产化学工业研究所 | There is the preparation method of the superhydrophobic fibers cellulosic material of micro-nano structure |
| CN104141226B (en) * | 2014-07-30 | 2016-04-20 | 陕西科技大学 | Utilize layer assembly in the method for leather surface constructing super-drainage coating |
| CN104372608B (en) * | 2014-11-12 | 2020-10-23 | 江南大学 | Method for preparing super-hydrophobic fabric through sol-gel electrochemical deposition |
| CN105316932A (en) * | 2015-11-30 | 2016-02-10 | 无锡新德印染制品有限公司 | Preparation method of fabric with super-hydrophobic function |
| CN105664534A (en) * | 2016-01-19 | 2016-06-15 | 南昌航空大学 | Method or preparing super-hydrophobic cigarette butts applicable to separating oil and water |
| CN108330558A (en) * | 2018-03-08 | 2018-07-27 | 唐卫兵 | A kind of preparation method of the hydrophobic fibre element chitosan nano fiber spinning solution of antibacterial functions |
| CN108797103A (en) * | 2018-06-27 | 2018-11-13 | 南通赛晖科技发展股份有限公司 | A kind of preparation method of the strong anti-pollution fabric based on nanogel processing |
| CN110004711B (en) * | 2019-04-25 | 2021-12-17 | 五邑大学 | Preparation method of super-hydrophobic polyester fabric and bubble stirring device |
| IT201900017942A1 (en) * | 2019-10-04 | 2021-04-04 | Leather Plus S R L | Functionalizing treatment method for leathers and the like. |
| CN114134723A (en) * | 2021-12-08 | 2022-03-04 | 宜兴市伟业印染有限公司 | Dyed fabric with anti-fouling and self-cleaning functions and preparation process thereof |
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