CN107627419A - A kind of preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide - Google Patents
A kind of preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide Download PDFInfo
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- CN107627419A CN107627419A CN201710998569.5A CN201710998569A CN107627419A CN 107627419 A CN107627419 A CN 107627419A CN 201710998569 A CN201710998569 A CN 201710998569A CN 107627419 A CN107627419 A CN 107627419A
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Abstract
The invention discloses a kind of preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide, it is characterised in that by wood sample through ultrasonic cleaning, re-dry to constant weight；Absolute ethyl alcohol is instilled into butyl titanate, is uniformly mixed, be added dropwise lauryl sodium sulfate aqueous solution, adjust pH, continue to stir, obtain TiO 2 sol, be divided into two parts it is stand-by；Wood sample by pretreatment is put into hydrothermal reaction kettle, adds a TiO 2 sol, it is closed to be placed in baking oven, heating, constant temperature, room temperature is down to again, takes out and be cleaned by ultrasonic, vacuum drying, titanium dioxide/Wood composite material is made；Ethanol is added into another TiO 2 sol, is made into titanium dioxide ethanol solution, composite is put into wherein, is sufficiently impregnated, after drying, then is impregnated in low-surface-energy solution and handles, be then dried to obtain the composite wood.
Description
Technical field
The present invention relates to Wooden modifying field, and in particular to a kind of hydrophobic light aging resisting type wood composite of carried titanium dioxide
The preparation method of material.
Background technology
Timber is a kind of natural resources, timber is carried out preservative treatment can with prolonging wood service life, to save timber,
Protect forest resources significant.It is rotten easily by entomogenous fungi infringement by the glued board of raw material of timber, make the use of glued board
It is restricted, by the glued board of preservative treatment, can effectively solves the above problems, reaches anti-corrosion, insect prevention, mould proof effect, prolong
The useful life of long glued board.Traditional wood preservation processing method has many drawbacks, should study a kind of green safe pollution-free
Wood preservation technology.Easily tide is easily mould in wet condition for timber, meets naked light easy firing, this not only lowers the utilization of timber
Rate, it also counteracts that application of the timber in production and living.To solve the problems, such as that timber easily tide is easily mould inflammable, expand timber application neck
Domain, improve timber utilization rate.
The content of the invention
The present invention solves the technical problem of provide a kind of hydrophobic light aging resisting type wood composite of carried titanium dioxide
The preparation method of material, according to this method prepare composite wood hydrophobic performance is good, light aging resisting property is good.
The technical problems to be solved by the invention are realized using following technical scheme：
The preparation method of the hydrophobic light aging resisting type composite wood of a kind of carried titanium dioxide, it is characterised in that according to the following steps
Carry out：
（1）The pretreatment of timber：
Wood sample is cleaned by ultrasonic 30-35min with deionized water, is placed in 100-105 DEG C of baking oven and is dried under vacuum to constant weight, it is close
Close preservation；
（2）The preparation of TiO 2 sol：
Into 9-11 parts by weight butyl titanates 1:8-10 is slowly dropped into absolute ethyl alcohol, and stirring 30-35min is well mixed, and 1-2 is added dropwise
Parts by weight lauryl sodium sulfate aqueous solution, it is 6-6.5 with salt acid for adjusting pH, continues to stir 15-20min, obtain titanium dioxide
Colloidal sol, be divided into two parts it is stand-by；
（3）Hydro-thermal reaction method prepares titanium dioxide/Wood composite material：
Will（1）The middle wood sample by pretreatment is put into hydrothermal reaction kettle, is added（2）Middle gained portion titanium dioxide is molten
Glue, it is closed to be placed in baking oven, 80-90 DEG C, constant temperature 1-2h is warming up to, then room temperature is down to, take out and be cleaned by ultrasonic 40-45min,
45-50 DEG C of vacuum drying 1-2d, is made titanium dioxide/Wood composite material；
（4）The load of titanium deoxid film and hydrophobically modified：
Ethanol is added into 3-5 parts by weight hexadecyl trimethoxy silanes, it is molten to be made into the low-surface-energy that mass fraction is 1-2%
Liquid；
To（2）Ethanol is added in another TiO 2 sol of middle gained, is made into the titanium dioxide ethanol that mass fraction is 2-3%
Solution, will（3）Middle gained composite is put into wherein, is sufficiently impregnated 30-40min, and room temperature is dried in the air after 1-2h, at 104-106 DEG C
1-2h is dried, then is impregnated in low-surface-energy solution and handles 1-2h, then in 60-70 DEG C of dry 2-3h, obtains the wood composite
Material.
Wherein, step（2）Middle concentration of hydrochloric acid is 34-36%, adds water to be made into 2-4 parts by weight lauryl sodium sulfate dense
Spend for 1 × 10-3Mol/L solution.
Step（3）Middle heating rate is 10-11 DEG C/min, and rate of temperature fall is 0.5-0.6 DEG C/min.
The present invention reaction mechanism and have the beneficial effect that：
Using butyl titanate as titanium source, TiO 2 sol is prepared, hydrophobically modified is carried out to it with lauryl sodium sulfate, passes through water
Hot method carried titanium dioxide on timber, prepares titanium dioxide/Wood composite material, and hydrophobically modified improves the anti-of composite
Tide mildew resistance, titanium dioxide can promote into charcoal, protection carbon residue during burning, and composite possesses anti-flammability, and titanium dioxide is one
The antiseptic of kind photocatalyst-type；By sol-gal process in wood surface carried titanium dioxide film, low-surface-energy is then modified
Material hexadecyl trimethoxy silane, water-repelling agent and the hydroxyl on nano titanium oxide surface chemically react, its alkane length
Chain grafts in wood surface, assigns timber good hydrophobic performance, while using the ultraviolet absorption ability of titanium dioxide, improves
The light aging resisting property of timber.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment
The preparation method of the hydrophobic light aging resisting type composite wood of a kind of carried titanium dioxide, it is characterised in that by following
Step is carried out：
（1）The pretreatment of timber：
Wood sample is cleaned by ultrasonic 35min with deionized water, is placed in 100-105 DEG C of baking oven and is dried under vacuum to constant weight, it is closed
Preserve；
（2）The preparation of TiO 2 sol：
Into 9kg butyl titanates 1:8 are slowly dropped into absolute ethyl alcohol, and stirring 35min is well mixed, and 1kg dodecyl sulphates are added dropwise
Sodium water solution, be 6-6.5 with salt acid for adjusting pH, continue stir 20min, obtain TiO 2 sol, be divided into two parts it is stand-by；
（3）Hydro-thermal reaction method prepares titanium dioxide/Wood composite material：
Will（1）The middle wood sample by pretreatment is put into hydrothermal reaction kettle, is added（2）Middle gained portion titanium dioxide is molten
Glue, it is closed to be placed in baking oven, 80-90 DEG C, constant temperature 1.5h is warming up to, then room temperature is down to, take out and be cleaned by ultrasonic 45min, in 45-50
DEG C vacuum drying 2d, be made titanium dioxide/Wood composite material；
（4）The load of titanium deoxid film and hydrophobically modified：
Ethanol is added into 3kg hexadecyl trimethoxy silanes, is made into the low-surface-energy solution that mass fraction is 2%；
To（2）Ethanol is added in another TiO 2 sol of middle gained, it is molten to be made into the titanium dioxide ethanol that mass fraction is 3%
Liquid, will（3）Middle gained composite is put into wherein, is sufficiently impregnated 40min, and room temperature is dried in the air after 1h, and 1h is dried at 104-106 DEG C,
It is impregnated in again in low-surface-energy solution and handles 2h, then in 60-70 DEG C of dry 2h, obtains the composite wood.
Wherein, step（2）Middle concentration of hydrochloric acid is 34%, and into 2kg lauryl sodium sulfate plus water is made into concentration as 1 × 10- 3Mol/L solution.
Step（3）Middle heating rate is 11 DEG C/min, and rate of temperature fall is 0.6 DEG C/min.
Claims (4)
- A kind of 1. preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide, it is characterised in that：By timber sample Product are through being cleaned by ultrasonic, re-dry to constant weight；Absolute ethyl alcohol is instilled into butyl titanate, is uniformly mixed, dodecyl is added dropwise Aqueous sodium persulfate solution, adjust pH, continue to stir, obtain TiO 2 sol, be divided into two parts it is stand-by；By the wood by pretreatment Material sample is put into hydrothermal reaction kettle, adds a TiO 2 sol, closed to be placed in baking oven, heating, constant temperature, is down to room again Temperature, take out and be cleaned by ultrasonic, vacuum drying, titanium dioxide/Wood composite material is made；Added into another TiO 2 sol Ethanol, titanium dioxide ethanol solution is made into, composite is put into wherein, is sufficiently impregnated, after drying, then be impregnated in low-surface-energy Handled in solution, be then dried to obtain the composite wood.
- 2. the preparation method of the hydrophobic light aging resisting type composite wood of a kind of carried titanium dioxide, it is characterised in that by following step It is rapid to carry out：（1）The pretreatment of timber：Wood sample is cleaned by ultrasonic 30-35min with deionized water, is placed in 100-105 DEG C of baking oven and is dried under vacuum to constant weight, it is close Close preservation；（2）The preparation of TiO 2 sol：Into 9-11 parts by weight butyl titanates 1:8-10 is slowly dropped into absolute ethyl alcohol, and stirring 30-35min is well mixed, and 1-2 is added dropwise Parts by weight lauryl sodium sulfate aqueous solution, it is 6-6.5 with salt acid for adjusting pH, continues to stir 15-20min, obtain titanium dioxide Colloidal sol, be divided into two parts it is stand-by；（3）Hydro-thermal reaction method prepares titanium dioxide/Wood composite material：Will（1）The middle wood sample by pretreatment is put into hydrothermal reaction kettle, is added（2）Middle gained portion titanium dioxide is molten Glue, it is closed to be placed in baking oven, 80-90 DEG C, constant temperature 1-2h is warming up to, then room temperature is down to, take out and be cleaned by ultrasonic 40-45min, 45-50 DEG C of vacuum drying 1-2d, is made titanium dioxide/Wood composite material；（4）The load of titanium deoxid film and hydrophobically modified：Ethanol is added into 3-5 parts by weight hexadecyl trimethoxy silanes, it is molten to be made into the low-surface-energy that mass fraction is 1-2% Liquid；To（2）Ethanol is added in another TiO 2 sol of middle gained, is made into the titanium dioxide ethanol that mass fraction is 2-3% Solution, will（3）Middle gained composite is put into wherein, is sufficiently impregnated 30-40min, and room temperature is dried in the air after 1-2h, at 104-106 DEG C 1-2h is dried, then is impregnated in low-surface-energy solution and handles 1-2h, then in 60-70 DEG C of dry 2-3h, obtains the wood composite Material.
- A kind of 3. preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide, it is characterised in that step（2）In Concentration of hydrochloric acid is 34-36%, and into 2-4 parts by weight lauryl sodium sulfate plus water is made into concentration as 1 × 10-3Mol/L solution.
- A kind of 4. preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide, it is characterised in that step（3）In Heating rate is 10-11 DEG C/min, and rate of temperature fall is 0.5-0.6 DEG C/min.
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| CN201710998569.5A CN107627419A (en) | 2017-10-24 | 2017-10-24 | A kind of preparation method of the hydrophobic light aging resisting type composite wood of carried titanium dioxide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724385A (en) * | 2018-05-15 | 2018-11-02 | 太和县天顺工艺品有限公司 | A kind of processing method of control pine timber moisture content |
| CN110722653A (en) * | 2019-10-25 | 2020-01-24 | 毛克升 | Preparation method of high-weather-resistance fir board |
| CN115723216A (en) * | 2022-11-17 | 2023-03-03 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of wood product waterproof light-aging-resistant dispersion liquid, product and application process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712175A (en) * | 2009-12-03 | 2010-05-26 | 东北林业大学 | Method of in situ growth of nano titanium dioxide protective layer on wood surface |
| CN104260169A (en) * | 2014-10-08 | 2015-01-07 | 西南林业大学 | Hydrophobic and ultraviolet radiation aging-resistant wood-based composite material and preparation method thereof |
-
2017
- 2017-10-24 CN CN201710998569.5A patent/CN107627419A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712175A (en) * | 2009-12-03 | 2010-05-26 | 东北林业大学 | Method of in situ growth of nano titanium dioxide protective layer on wood surface |
| CN104260169A (en) * | 2014-10-08 | 2015-01-07 | 西南林业大学 | Hydrophobic and ultraviolet radiation aging-resistant wood-based composite material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724385A (en) * | 2018-05-15 | 2018-11-02 | 太和县天顺工艺品有限公司 | A kind of processing method of control pine timber moisture content |
| CN110722653A (en) * | 2019-10-25 | 2020-01-24 | 毛克升 | Preparation method of high-weather-resistance fir board |
| CN110722653B (en) * | 2019-10-25 | 2020-11-24 | 福建省顺昌县升升木业有限公司 | Preparation method of high-weather-resistance fir board |
| CN115723216A (en) * | 2022-11-17 | 2023-03-03 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of wood product waterproof light-aging-resistant dispersion liquid, product and application process thereof |
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Application publication date: 20180126 |