CN106863507A - A kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide - Google Patents
A kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide Download PDFInfo
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- CN106863507A CN106863507A CN201611255327.9A CN201611255327A CN106863507A CN 106863507 A CN106863507 A CN 106863507A CN 201611255327 A CN201611255327 A CN 201611255327A CN 106863507 A CN106863507 A CN 106863507A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0207—Pretreatment of wood before impregnation
- B27K3/0214—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/12—Impregnating by coating the surface of the wood with an impregnating paste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide, with low viscous Lauxite, nano-graphene and nano titanium oxide as material, with reference to timber micron-sized coarse unity and coherence in writing structure in itself, the micro-nano two grades films of concavo-convex coarse unity and coherence in writing structure are built in wood surface using sol-gal process, and modify hydrophobic substance on the micro-nano two grades films of concavo-convex coarse unity and coherence in writing structure so that wood surface adheres to one layer of hydrophobic film.Advantages of the present invention：Using low viscous Lauxite dunnage board cell cavity, and then prevent the entrance of moisture, the fibre chemistry group of timber chemically reacts with Lauxite simultaneously so that be combined with each other between cellulose skeleton chemical bond, the firmness between enhancing Lauxite and timber；Using nano-titania particle and timber, micron-sized coarse structure prepares two grades of coarse membrane structures of convex-concave copying lotus leaf surface in itself, reaches the purpose for preventing moisture from entering.
Description
Technical field
It is more particularly to a kind of that timber is improved based on nano titanium oxide the present invention relates to a kind of Wooden modifying processing method
The method of hydrophobicity and stability.
Background technology
Timber is widely used in the fields such as building, Furniture manufacture and interior decoration, but because it has abundant hole knot
Structure simultaneously contains substantial amounts of hydrophilic radical so that timber has very strong moisture absorption, water imbibition, can cause wood shrinkage bulking, leads
Cause to produce the defects such as warpage, deformation, cracking, therefore, before timber or woodwork use, generally require and do at hydrophobic protective
Reason.Most traditional hydrophobic treatment methods, such as chemical reagent dipping modification or top finishing, although can carry to a certain extent
The hydrophobicity of timber high, but cannot fundamentally suppress intrusion of the moisture to timber, it is difficult to realize the digital preservation of wood surface.
Additionally, chemical modification can influence the structure and composition of timber itself to a certain extent, the mechanical strength of timber is influenceed.
World scholar has done substantial amounts of research work to timber hydrophobic treatment technology in recent years.Structure and change for timber
Composition is learned, the hygroscopic method of timber is solved and is roughly divided into two kinds：First, disposed of in its entirety is carried out to timber；2nd, by surface treatment
Prevent contact of the timber with moisture.To the bulk modified of timber, domestic and foreign scholars delivered many reports.Bulk modified middle chemistry
It is modified mainly to include：Acetylation treatment, resin treatment are modified, glutaraldehyde treatment is modified, organosilicon is processed, heat treatment is modified etc.
Deng.Wherein to using methods such as Nano sol impregnation process, microemulsion infiltration treatment, plasma discharge treatments, also having in document
Mention.Micro-nano roughening is carried out to substrate using nano particle, i.e., nano-particle is introduced into matrix table using sol-gel process
Face, it is also possible to successfully on material surface the inorganic-organic thin layer of depositing hydrophobic by this method, moisture and vapor
Absorption can be reduced to a certain extent, but this method can not completely prevent the entrance of moisture.
The content of the invention
It is an object of the invention to overcome disadvantages mentioned above, there is provided one kind based on nano titanium oxide improve timber hydrophobicity and
The method of stability, its first with the cell cavity of low viscous Lauxite dunnage board, while the fibre chemistry group of timber
Chemical reaction is there occurs with Lauxite so that be combined with each other between cellulose skeleton chemical bond, between enhancing Lauxite and timber
Firmness.Bionic principle is utilized simultaneously, i.e., using nano-titania particle and timber micron-sized coarse structure system in itself
Standby two grades of convex-concave structures for copying lotus leaf surface, while the characteristic using Graphene in itself, by nano-titania particle and urea
Urea formaldehyde is closely combined together, and enhances the attachment dynamics of nano-titania particle, recycles hydrophobic substance to convex-concave
Structure is modified, and wood surface is changed into hydrophobicity from hydrophily, while using Ti02Excellent ultraviolet absorption ability, carries
The light aging resisting property of timber high, possesses hydrophobic and ultraviolet protection performance feature timber to obtain.
In order to realize the purpose of the present invention, the technical solution adopted by the present invention is：With low viscous Lauxite, nanometer stone
Black alkene and nano titanium oxide are material, with reference to timber micron-sized coarse unity and coherence in writing structure in itself, using sol-gel process in wood
The micro-nano two grades films of concavo-convex coarse unity and coherence in writing structure are built on material surface, and in the thin of micro-nano two grades concavo-convex coarse unity and coherence in writing structures
Hydrophobic substance is modified on film so that wood surface adheres to one layer of hydrophobic film.
Preferably, the mass ratio of the low viscous Lauxite, nano-graphene and nano titanium oxide is 10-20:
0.5-0.8:1。
Further, concrete operation step is：
Prepared by a, colloidal solution, low viscous Lauxite, nano-graphene and nano titanium oxide are mixed simultaneously according to proportion
It is made colloidal sol shape standby；
B, the drying of wood, timber is dried to constant weight at 90-100 DEG C；
C, impregnation process, dried timber is placed in closed container, and toward adding colloidal solution in closed container to not having
Timber, then impregnating by pressure 3-5h；
D, Gel Treatment, after aged 5-8h, heat so that wood surface forms one layer micro-nano two grades to colloidal solution
Concavo-convex coarse unity and coherence in writing structural membrane；
E, hydrophobic treatment, take out timber, and hydrophobic substance is adhered on micro-nano two grades concavo-convex coarse unity and coherence in writing structural membranes；
, first be placed in for timber in 30-50 DEG C of baking oven and dry to constant weight by f, drying and processing, and then intensification oven temperature is to 90-100
Sintering curing film at DEG C, i.e. finished product.
Preferably, the hydrophobic substance is stearic acid or HDTMS.
Preferably, in the step c, the pressure of impregnating by pressure is 0.8-1MPa.
Preferably, in a steps, nano-sized hydrophobic agent can also be added during colloidal solution is prepared.
The advantage of the inventive method is embodied in the following aspects：
1st, using the cell cavity of low viscous Lauxite dunnage board, and then the entrance of moisture is prevented.While the fibre of timber
Dimension chemical group there occurs chemical reaction with Lauxite so that be combined with each other between cellulose skeleton chemical bond, strengthen ureaformaldehyde tree
Firmness between fat and timber.
2nd, using bionic principle, i.e., using nano-titania particle and timber, micron-sized coarse structure preparation is imitative in itself
Two grades of coarse membrane structures of convex-concave of lotus leaf surface are made, the purpose that further prevention moisture enters has been reached.
3rd, nano-graphene is increased, during Gel Treatment so that two grades of coarse unity and coherence in writing structures of convex-concave are more obvious,
More it is adjacent to lotus leaf surface unity and coherence in writing structure.
4th, Graphene also acts bridge beam action, and nano-titania particle and Lauxite are closely combined one
Rise, enhance the attachment dynamics of nano-titania particle, while Graphene and the intensity and anti-wear performance of energy enhanced film
5th, the coarse membrane structure of convex-concave is modified using hydrophobic substance, wood surface is changed into hydrophobicity from hydrophily, its
Contact angle reaches more than 150 °.
6th, using Ti02Excellent ultraviolet absorption ability, improves the light aging resisting property of timber, possesses hydrophobic to obtain
And the feature timber of ultraviolet protection performance.
Specific embodiment
The explanation by taking poplar as an example：
Embodiment 1
First by low viscous Lauxite, nano-graphene and nano titanium oxide according to mass ratio be 10:0.5:1 ratio
Mix and be made colloidal sol shape standby；Timber is dried to constant weight at 90-100 DEG C；Then dried timber is placed in closed
In container, and, to not having timber, then 3-5h is impregnated under the pressure of 0.8-1MPa toward addition colloidal solution in closed container；Through
After ageing 5-8h, colloidal solution is heated so that wood surface forms one layer of micro-nano two grades of concavo-convex coarse unity and coherence in writing structure
Film；Timber is taken out, stearic acid is adhered on micro-nano two grades concavo-convex coarse unity and coherence in writing structural membranes；Then first timber is placed in
Dried in 30-50 DEG C of baking oven to constant weight, then intensification oven temperature is obtained into sintering curing film at 90-100 DEG C
Product.Finished product after tested, hydrophobicity（Contact angle）It is 155 °, light fastness aging（Total color difference value）It is 30%.
Comparative example 1
Nano-graphite olefinic substance is added without in the present embodiment, other treatment conditions are with embodiment 1.Obtained finished product after tested, is dredged
It is aqueous（Contact angle）It is 132 °, light fastness aging（Total color difference value）It is 40%, the intensity and anti-wear performance of wood surface are significantly lower than
Embodiment 1.
Comparative example 2
Hydrophobic substance in the present embodiment selects HDTMS, and other treatment conditions are with embodiment 1.Obtained improved wood finished product warp
Test, hydrophobicity（Contact angle）It is 160 °, light fastness aging（Total color difference value）It is 30%.
Comparative example 3
SS-1/SS-11 type water nano water-repelling agents are also added in the present embodiment, other treatment conditions are with embodiment 1.It is obtained
Improved wood finished product after tested, hydrophobicity（Contact angle）It is 170 °, light fastness aging（Total color difference value）It is 30%.
Comparative example 4
Nano titanium oxide is substituted for the nano silicon of equivalent, his treatment conditions are with embodiment 1 in the present embodiment.It is obtained
Improved wood finished product after tested, hydrophobicity（Contact angle）It is 121 °, light fastness aging（Total color difference value）It is 65%.
Comparative example 5
Nano titanium oxide is substituted for the nano zine oxide of equivalent, his treatment conditions are with embodiment 1 in the present embodiment.It is obtained
Improved wood finished product after tested, hydrophobicity（Contact angle）It is 130 °, light fastness aging（Total color difference value）It is 63%.
Claims (6)
1. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide, it is characterised in that：With low viscous
Lauxite, nano-graphene and nano titanium oxide are material, with reference to timber micron-sized coarse unity and coherence in writing structure in itself, are used
Sol-gel process builds the micro-nano two grades films of concavo-convex coarse unity and coherence in writing structure in wood surface, and concavo-convex at micro-nano two grades
Hydrophobic substance is modified on the film of coarse unity and coherence in writing structure so that wood surface adheres to one layer of hydrophobic film.
2. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide according to claim 1, its
It is characterised by：The mass ratio of the low viscous Lauxite, nano-graphene and nano titanium oxide is 10-20:0.5-
0.8:1。
3. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide according to claim 1, its
It is characterised by：Concrete operation step is：
Prepared by a, colloidal solution, low viscous Lauxite, nano-graphene and nano titanium oxide are mixed simultaneously according to proportion
It is made colloidal sol shape standby；
B, the drying of wood, timber is dried to constant weight at 90-100 DEG C；
C, impregnation process, dried timber is placed in closed container, and toward adding colloidal solution in closed container to not having
Timber, then impregnating by pressure 3-5h；
D, Gel Treatment, after aged 5-8h, heat so that wood surface forms one layer micro-nano two grades to colloidal solution
Concavo-convex coarse unity and coherence in writing structural membrane；
E, hydrophobic treatment, take out timber, and hydrophobic substance is adhered on micro-nano two grades concavo-convex coarse unity and coherence in writing structural membranes；
, first be placed in for timber in 30-50 DEG C of baking oven and dry to constant weight by f, drying and processing, and then intensification oven temperature is to 90-100
Sintering curing film at DEG C, i.e. finished product.
4. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide according to claim 1 or 3,
It is characterized in that：The hydrophobic substance is stearic acid or HDTMS.
5. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide according to claim 3, its
It is characterised by：In the step c, the pressure of impregnating by pressure is 0.8-1MPa.
6. a kind of method that timber hydrophobicity and stability are improved based on nano titanium oxide according to claim 3, its
It is characterised by：In a steps, nano-sized hydrophobic agent can also be added during colloidal solution is prepared.
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| CN201611255327.9A CN106863507B (en) | 2016-12-30 | 2016-12-30 | A method of timber hydrophobicity and stability are improved based on nano-titanium dioxide |
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| CN201611255327.9A CN106863507B (en) | 2016-12-30 | 2016-12-30 | A method of timber hydrophobicity and stability are improved based on nano-titanium dioxide |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107627418A (en) * | 2017-09-20 | 2018-01-26 | 阜南县星光工艺品有限公司 | A kind of raising woodwork is water-fast and the processing method of light aging |
| CN107938977A (en) * | 2017-12-29 | 2018-04-20 | 东祥麟(江苏)实业有限公司 | A kind of decorative panel with thermal and insulating performance |
| CN109333714A (en) * | 2018-11-21 | 2019-02-15 | 湖北彩砼新材料有限公司 | A kind of preparation method and its timber of super-hydrophobic magnetic timber |
| CN109795000A (en) * | 2018-12-28 | 2019-05-24 | 南京林业大学 | The preparation method of high thermal conductivity veneer graphene dipping improved wood |
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| CN109795000A (en) * | 2018-12-28 | 2019-05-24 | 南京林业大学 | The preparation method of high thermal conductivity veneer graphene dipping improved wood |
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| CN106863507B (en) | 2019-03-08 |
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