CN103831877A - Preparation method for timber with surface wettability switch responding to environment - Google Patents
Preparation method for timber with surface wettability switch responding to environment Download PDFInfo
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- CN103831877A CN103831877A CN201410127424.4A CN201410127424A CN103831877A CN 103831877 A CN103831877 A CN 103831877A CN 201410127424 A CN201410127424 A CN 201410127424A CN 103831877 A CN103831877 A CN 103831877A
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Abstract
The invention provides a preparation method for a timber with surface wettability switch responding to an environment, relating to a preparation method for a material with surface wettability switch and solving the problems that hydrophilic-lyophobic reversible switch of the timber surface wettability can not be realized and the timber can not respond to the change of an outer environment condition. The method comprises the following steps: preparing a mixed solution and adjusting the pH (Potential of Hydrogen); placing a timber in the mixed solution to react; and washing and drying to obtain the timber with different wettability properties on the surface. The surface wettability of the prepared timber has response to the pH value of the solution and can effectively realize the hydrophilic-lyophobic reversible switch to form an intelligent switch, so that the timber can respond to the change of the outer environment condition and has the self-cleaning function.
Description
Technical field
The present invention relates to the preparation method of material surface wetability conversion.
Background technology
Timber is a kind of natural regenerative resource, the good characteristics such as its workability, the ratio of strength to weight are high, thermal insulation, recyclability, thus be widely used in the every field of people's life.But timber has its intrinsic defect simultaneously, as easy hygroscopic deformation, easily mouldy, be easily corroded and damage by worms, easy phototropic etc., limited its range of application.In order to extend its service life, expand its scope of application, timber is carried out to bionic function improvement.Nanometer science and technology is a frontier of development in science and technology.Nano material has quantum effect, small-size effect, skin effect and the fractal characteristic etc. of gathering, and shows much distinctive character, can be for fields such as photoelectromagnetic sensitivity and catalysis.Wherein, nano titanium oxide is nontoxic, stable performance, and heat endurance is high, has anti-chemistry and photoetch, photocatalytic activity high, is emphasis and the focus of current nanometer material science research.In recent years, numerous scholars carry out a large amount of research to the wetability conversion of titanium dioxide surface, and it is intelligent to find that it has photoresponse, thermal response, pH response etc., have been widely used in the fields such as antifog, self-cleaning glass, textile.
Can not realize close and distant water reversible transformation but existing wood surface wetability exists, the problem of replying is made in the variation of environmental condition to external world.
Summary of the invention
The present invention will solve existing wood surface wetability existence can not realize close and distant water reversible transformation, and the problem of replying is made in the variation of environmental condition to external world, and a kind of preparation method of the conversion of the wood surface wetability to environmental response is provided.
A preparation method for wood surface wetability conversion to environmental response, specifically carries out according to following steps:
One, be under 5W～100W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 25min～35min, obtain mixed liquor, be that 1%～20% hydrochloric acid solution regulates pH to 1～7 or drips the sodium hydrate aqueous solution that mass percent is 1%～20% and regulates pH to 7～14, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor again;
The concentration of described mixed liquor mesoboric acid is 1mol/L～10mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 1mol/L～10mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 1h～24h at 70 ℃～150 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 8h～24h at 40 ℃～80 ℃ in temperature, obtain surface and have the timber of different wetting.
The invention has the beneficial effects as follows: wood surface wetability prepared by the present invention has response to the acid-base value of solution of living in, can effectively realize close and distant water reversible transformation, form intelligence " switch ", make timber to external world the variation of environmental condition make and replying, there is self-cleaning function.
The present invention is for a kind of preparation method of the conversion of the wood surface wetability to environmental response.
Accompanying drawing explanation
Fig. 1 is the TiO that the prepared pH of embodiment mono-is 1
2the contact angle resolution chart of/wood structure;
Fig. 2 is the TiO that the prepared pH of embodiment bis-is 13
2the contact angle resolution chart of/wood structure;
Fig. 3 is the TiO that the prepared pH of embodiment tri-is 2
2the contact angle resolution chart of/wood structure;
Fig. 4 is the TiO that the prepared pH of embodiment tetra-is 14
2the contact angle resolution chart of/wood structure.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: the preparation method of a kind of conversion of the wood surface wetability to environmental response described in present embodiment, specifically carries out according to following steps:
One, be under 5W～100W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 25min～35min, obtain mixed liquor, be that 1%～20% hydrochloric acid solution regulates pH to 1～7 or drips the sodium hydrate aqueous solution that mass percent is 1%～20% and regulates pH to 7～14, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor again;
The concentration of described mixed liquor mesoboric acid is 1mol/L～10mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 1mol/L～10mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 1h～24h at 70 ℃～150 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 8h～24h at 40 ℃～80 ℃ in temperature, obtain surface and have the timber of different wetting.
The beneficial effect of present embodiment is: wood surface wetability prepared by present embodiment has response to the acid-base value of solution of living in, can effectively realize close and distant water reversible transformation, form intelligence " switch ", make timber to external world the variation of environmental condition make and replying, there is self-cleaning function.
The specific embodiment two: present embodiment is different from the specific embodiment one: the concentration of the mixed liquor mesoboric acid described in step 1 is 1mol/L～9mol/L.Other is identical with the specific embodiment one.
The specific embodiment three: present embodiment is different from one of specific embodiment one or two: in the mixed liquor described in step 1, the concentration of ammonium titanium fluoride is 1mol/L～9mol/L.Other is identical with the specific embodiment one or two.
The specific embodiment four: present embodiment is different from one of specific embodiment one to three: the timber described in step 2 is softwood or broadleaf.Other is identical with the specific embodiment one to three.
The specific embodiment five: present embodiment is different from one of specific embodiment one to four: in step 2, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and be to react 6h at 80 ℃ in temperature, obtain reacted timber.Other is identical with the specific embodiment one to four.
The specific embodiment six: present embodiment is different from one of specific embodiment one to five: in step 2, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and be to react 8h at 100 ℃ in temperature, obtain reacted timber.Other is identical with the specific embodiment one to five.
The specific embodiment seven: present embodiment is different from one of specific embodiment one to six: with the timber after deionized water cleaning reaction, and be dry 24h at 60 ℃ in temperature in step 3, obtain surface and have the timber of different wetting.Other is identical with the specific embodiment one to six.
The specific embodiment eight: present embodiment is different from one of specific embodiment one to five: with the timber after deionized water cleaning reaction, and be dry 24h at 80 ℃ in temperature in step 3, obtain surface and have the timber of different wetting.Other is identical with the specific embodiment one to seven.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-:
The preparation method of a kind of conversion of the wood surface wetability to environmental response described in the present embodiment, specifically carries out according to following steps:
One, be under 30W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 30min, obtain mixed liquor, then be that 1% hydrochloric acid solution regulates pH to 1, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor;
The concentration of described mixed liquor mesoboric acid is 1.2mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 0.4mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 6h at 80 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 24h at 60 ℃ in temperature, obtain surface and have the timber of different wetting.
Timber described in step 2 is poplar.
The TiO that pH as prepared in Fig. 1 embodiment mono-is 1
2shown in the contact angle resolution chart of/wood structure, the present embodiment is tested by contact angle, records prepared pH and be 1 TiO
2the contact angle of/wood structure is 10.5 °.
Embodiment bis-:
The preparation method of a kind of conversion of the wood surface wetability to environmental response described in the present embodiment, specifically carries out according to following steps:
One, be under 100W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 30min, mixed liquor obtained, be that 1% sodium hydrate aqueous solution regulates pH to 13, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor again;
The concentration of described mixed liquor mesoboric acid is 0.3mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 0.1mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 6h at 80 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 24h at 60 ℃ in temperature, obtain surface and have the timber of different wetting.
Timber described in step 2 is poplar.
The TiO that pH as prepared in Fig. 2 embodiment bis-is 13
2shown in the contact angle resolution chart of/wood structure, the present embodiment is tested by contact angle, records prepared pH and be 13 TiO
2the contact angle of/wood structure is 114.5 °.
Embodiment tri-:
The preparation method of a kind of conversion of the wood surface wetability to environmental response described in the present embodiment, specifically carries out according to following steps:
One, be under 80W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 30min, obtain mixed liquor, then be that 1% hydrochloric acid solution regulates pH to 2, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor;
The concentration of described mixed liquor mesoboric acid is 0.9mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 0.3mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 8h at 100 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 24h at 80 ℃ in temperature, obtain surface and have the timber of different wetting.
Timber described in step 2 is poplar.
The TiO that pH as prepared in Fig. 3 embodiment tri-is 2
2shown in the contact angle resolution chart of/wood structure, the present embodiment is tested by contact angle, records prepared pH and be 2 TiO
2the contact angle of/wood structure is 30.4 °.
Embodiment tetra-:
The preparation method of a kind of conversion of the wood surface wetability to environmental response described in the present embodiment, specifically carries out according to following steps:
One, be under 60W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 30min, obtain mixed liquor, then be that 1% sodium hydrate aqueous solution regulates pH to 14, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor;
The concentration of described mixed liquor mesoboric acid is 1.5mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 0.5mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 8h at 100 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 24h at 80 ℃ in temperature, obtain surface and have the timber of different wetting.
Timber described in step 2 is poplar.
The TiO that pH as prepared in Fig. 4 embodiment tetra-is 14
2shown in the contact angle resolution chart of/wood structure, the present embodiment is tested by contact angle, records prepared pH and be 14 TiO
2the contact angle of/wood structure is 132.7 °.
From embodiment mono-to embodiment tetra-, the wood surface wetability of preparation has response to the acid-base value of solution of living in, can effectively realize close and distant water reversible transformation, forms intelligence " switch ", make timber to external world the variation of environmental condition make and replying, there is self-cleaning function.
Claims (8)
1. a preparation method for the wood surface wetability conversion to environmental response, is characterized in that a kind of preparation method of the conversion of the wood surface wetability to environmental response carries out according to following steps:
One, be under 5W～100W in room temperature and power, boric acid, ammonium titanium fluoride and distilled water are mixed, and magnetic agitation 25min～35min, obtain mixed liquor, be that 1%～20% hydrochloric acid solution regulates pH to 1～7 or drips the sodium hydrate aqueous solution that mass percent is 1%～20% and regulates pH to 7～14, the mixed liquor after adjusted pH to dripping mass percent in mixed liquor again;
The concentration of described mixed liquor mesoboric acid is 1mol/L～10mol/L; In described mixed liquor, the concentration of ammonium titanium fluoride is 1mol/L～10mol/L;
Two, timber is cleaned and dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and is to react 1h～24h at 70 ℃～150 ℃ in temperature, obtain reacted timber;
Three, with the timber after deionized water cleaning reaction, and be dry 8h～24h at 40 ℃～80 ℃ in temperature, obtain surface and have the timber of different wetting.
2. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, the concentration that it is characterized in that the mixed liquor mesoboric acid described in step 1 is 1mol/L～9mol/L.
3. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, the concentration that it is characterized in that ammonium titanium fluoride in the mixed liquor described in step 1 is 1mol/L～9mol/L.
4. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, is characterized in that the timber described in step 2 is softwood or broadleaf.
5. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, it is characterized in that in step 2, timber being cleaned and being dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and be to react 6h at 80 ℃ in temperature, obtain reacted timber.
6. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, it is characterized in that in step 2, timber being cleaned and being dried, obtain the timber after cleaning, drying, then the timber after cleaning, drying is placed in the mixed liquor regulating after pH, and be to react 8h at 100 ℃ in temperature, obtain reacted timber.
7. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, it is characterized in that in step 3 with the timber after deionized water cleaning reaction, and be dry 24h at 60 ℃ in temperature, obtain surface and have the timber of different wetting.
8. the preparation method of a kind of conversion of the wood surface wetability to environmental response according to claim 1, it is characterized in that in step 3 with the timber after deionized water cleaning reaction, and be dry 24h at 80 ℃ in temperature, obtain surface and have the timber of different wetting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127424.4A CN103831877A (en) | 2014-04-01 | 2014-04-01 | Preparation method for timber with surface wettability switch responding to environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127424.4A CN103831877A (en) | 2014-04-01 | 2014-04-01 | Preparation method for timber with surface wettability switch responding to environment |
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| CN201410127424.4A Pending CN103831877A (en) | 2014-04-01 | 2014-04-01 | Preparation method for timber with surface wettability switch responding to environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126923A (en) * | 2015-08-25 | 2015-12-09 | 东北林业大学 | Sliver-titanium composite film loaded wood base material capable of degrading formaldehyde under visible light irradiation, and preparation method of sliver-titanium composite film loaded wood base material |
| CN105773782A (en) * | 2016-04-14 | 2016-07-20 | 浙江亚厦产业园发展有限公司 | Furniture making-replica method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143748A (en) * | 1990-10-26 | 1992-09-01 | Matsushita Electric Works, Ltd. | Timber surface improving treatment process |
| CN101508129A (en) * | 2009-03-17 | 2009-08-19 | 东北林业大学 | Method for changing wheat straw, straw surface wettability |
| CN103624853A (en) * | 2013-12-19 | 2014-03-12 | 东北林业大学 | Method for preparing wood surface hydrophilicity-hydrophobicity reversible switch |
-
2014
- 2014-04-01 CN CN201410127424.4A patent/CN103831877A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143748A (en) * | 1990-10-26 | 1992-09-01 | Matsushita Electric Works, Ltd. | Timber surface improving treatment process |
| CN101508129A (en) * | 2009-03-17 | 2009-08-19 | 东北林业大学 | Method for changing wheat straw, straw surface wettability |
| CN103624853A (en) * | 2013-12-19 | 2014-03-12 | 东北林业大学 | Method for preparing wood surface hydrophilicity-hydrophobicity reversible switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126923A (en) * | 2015-08-25 | 2015-12-09 | 东北林业大学 | Sliver-titanium composite film loaded wood base material capable of degrading formaldehyde under visible light irradiation, and preparation method of sliver-titanium composite film loaded wood base material |
| CN105773782A (en) * | 2016-04-14 | 2016-07-20 | 浙江亚厦产业园发展有限公司 | Furniture making-replica method |
| CN105773782B (en) * | 2016-04-14 | 2018-01-09 | 浙江亚厦产业园发展有限公司 | Furniture does aging method |
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Application publication date: 20140604 |