CN108839164A - A kind of method of solvent-free wood surface hydrophobically modified - Google Patents
A kind of method of solvent-free wood surface hydrophobically modified Download PDFInfo
- Publication number
- CN108839164A CN108839164A CN201810576810.XA CN201810576810A CN108839164A CN 108839164 A CN108839164 A CN 108839164A CN 201810576810 A CN201810576810 A CN 201810576810A CN 108839164 A CN108839164 A CN 108839164A
- Authority
- CN
- China
- Prior art keywords
- wood surface
- hydrophobically modified
- timber
- concentrated ammonia
- modified according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention belongs to the fields of timber hydrophobically modified, and in particular to a method of hydrophobically modified is carried out to wood surface in the case where solvent-free use.The specific steps are：Timber is placed in teos solution and is impregnated 2-10 minutes, is then transferred directly in the closed container equipped with concentrated ammonia liquor, wherein the mass ratio of concentrated ammonia liquor and timber is 1:1-8:1, reaction 0.5-24h is hydrolyzed at a temperature of 25-100 DEG C.Finally heat treatment 1-5h is carried out in 70-110 DEG C.The method of the present invention makes wood surface construct one layer of hydrophobic titanium dioxide silicon film, so that timber be made to have good hydrophobic performance.
Description
Technical field
The invention belongs to the fields of timber hydrophobically modified, and in particular to a kind of side of solvent-free wood surface hydrophobically modified
Method.
Background technique
Timber be it is a kind of renewable and can natural degradation green material and living resources, it has beautiful texture, color
Naturally, the advantages that texture is comfortable, plasticity is good, easy to process, therefore be widely applied in daily life, such as furniture, timber structure
House, woodcarving etc..However containing a large amount of hydrophilic radical in the timber cellulose and hemicellulose that contain, so that moisture content
It can change with the variation of temperature and humidity, to occur phenomena such as buckling deformation, rotten discoloration in use, influence its beauty
The property seen and service performance.Therefore, hydrophobically modified is carried out to timber to be of great significance, it can be inhibited to absorb water from environment
Part, improve dimensional stability.In order to improve the hydrophobicity of China fir, and then its dimensional stability is improved, the invention proposes in wood
One layer of hydrophobic titanium dioxide silicon film of material surface construction, to greatly improve its hydrophobicity to improve its dimensional stability.This hair
It is bright that all kinds of solvents are not used during Wooden modifying, it is environmental-friendly.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of wood surface hydrophobically modified, and method is novel, simple process, and changes
Property during all kinds of solvents are not used, improving, timber is hydrophobic while extending the application range of timber.
To achieve the goals above.The technical scheme is that：
A method of surface hydrophobicity is carried out to China fir using solventless method and is modified, specific step is as follows：
（1）Construct SiO2Particle film layer：Wooden unit is immersed in teos solution and is impregnated several minutes, is then transferred into equipped with dense
In the closed container of ammonium hydroxide, a period of time is reacted under certain temperature.
（2）Heat treatment：Wooden unit after reaction is placed in baking oven and is heat-treated a few hours under certain temperature.
Wherein step（1）Soaking time be 2-10 min, the mass ratio of concentrated ammonia liquor and timber is 1:1-8:1.
Wherein step（1）Temperature be 25-100 DEG C, the reaction time be 0.5-24 h.
Wherein step（2）Heat treatment time be 1-5 h, heat treatment temperature be 70-110 DEG C.
Remarkable advantage of the invention：One layer of hydrophobic titanium dioxide silicon film is constructed in wood surface by simple method, is made
Wood surface loads a large amount of hydrophobic grouping ethyoxyls, to greatly improve its hydrophobicity, treatment process is simple, novel and efficient.
Detailed description of the invention
Fig. 1 a is the water contact angle figure of wood surface in comparative example.
Fig. 1 b is the water contact angle figure of 1 wood surface of embodiment.
Fig. 1 c is the water contact angle figure of 2 wood surface of embodiment.
Fig. 1 d is the water contact angle figure of 3 wood surface of embodiment.
Specific embodiment
The present invention further illustrates the present invention with following experiments example, but protection scope of the present invention is not limited to following reality
Apply example.
Comparative example
（1）China fir is placed in closed container, is heat-treated 1 h at 75 DEG C in baking oven.
（3）The above wooden unit is placed in baking oven and is heat-treated 1 h at a temperature of 100 DEG C.
Embodiment 1
（1）It will be having a size of the cm × 1.2 of 1.6 cm × 1.8 cm（Cross × diameter × string）Wooden unit（1.10 g）Immerse positive silicic acid second
3 min in ester solution is then transferred directly in the plastic containers equipped with 5.0 g concentrated ammonia liquors, is placed in baking oven at 25 DEG C
React 6 h.（The mass ratio of concentrated ammonia liquor and wooden unit is 4.55 in this step:1）.
（2）Wooden unit after reaction is placed in 100 DEG C of 2 h of heat treatment in baking oven.
Embodiment 2
（1）It will be having a size of the wooden unit of the cm × 1.2 of 1.6 cm × 1.8 cm (cross × diameter × string)（1.10 g）Immerse positive silicic acid second
1 min in ester solution is then transferred directly in the plastic containers equipped with 7.0 g concentrated ammonia liquors, is placed in baking oven at 40 DEG C
React 3 h.（The mass ratio of concentrated ammonia liquor and wooden unit is 6.36 in this step:1）.
（2）Wooden unit after reaction is placed in 110 DEG C of 1 h of heat treatment in baking oven.
Embodiment 3
（1）It will be having a size of the wooden unit of the cm × 1.2 of 1.6 cm × 1.8 cm (cross × diameter × string)（1.10 g）Immerse positive silicic acid second
6 min in ester solution is then transferred directly in the plastic containers equipped with 4.0 g concentrated ammonia liquors, is placed in baking oven at 55 DEG C
React 0.5 h.（The mass ratio of concentrated ammonia liquor and wooden unit is 3.64 in this step:1）.
（2）Wooden unit after reaction is placed in 90 DEG C of 3 h of heat treatment in baking oven.
1 contact angle size of table
Table 1 is the contact angle size of comparative example and each embodiment, and from the data in the table, unmodified timber is due to containing on surface
A large amount of hydrophilic radicals, water droplet are adsorbed completely, and contact angle is 0 °.Modified timber, contact angle significantly improve.
Claims (5)
1. a kind of method of solvent-free wood surface hydrophobically modified, it is characterised in that：With ethyl orthosilicate TEOS by China fir table
Face is soaked, and slow hydrolysis-condensation is then carried out in ammonia atmosphere, to construct one layer of hydrophobic titanium dioxide in wood surface
Silicon film；And then wood surface is made to have good hydrophobic performance.
2. a kind of method of wood surface hydrophobically modified according to claim 1, it is characterised in that：Specific step is as follows：
（1）Construct hydrophobic titanium dioxide silicon film：Wooden unit is immersed in teos solution and is impregnated several minutes, dress is then transferred into
Have in the closed container of concentrated ammonia liquor, a period of time is reacted under certain temperature.
（2）Heat treatment：Wooden unit after reaction is placed in baking oven and is heat-treated a few hours under certain temperature.
3. a kind of method of wood surface hydrophobically modified according to claim 2, it is characterised in that：Step（1）Timber
The time of teos solution is soaked in as 2-10 min, the mass ratio of concentrated ammonia liquor and timber is 1:1-8:1.
4. a kind of method of wood surface hydrophobically modified according to claim 2, it is characterised in that：Step（1）It is anti-
Answering temperature is 25-100 DEG C, and the reaction time is 0.5-24 h.
5. a kind of method of wood surface hydrophobically modified according to claim 2, it is characterised in that：Step（2）Heat at
The reason time is 1-5 h, and heat treatment temperature is 70-110 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576810.XA CN108839164A (en) | 2018-06-07 | 2018-06-07 | A kind of method of solvent-free wood surface hydrophobically modified |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576810.XA CN108839164A (en) | 2018-06-07 | 2018-06-07 | A kind of method of solvent-free wood surface hydrophobically modified |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108839164A true CN108839164A (en) | 2018-11-20 |
Family
ID=64210388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810576810.XA Pending CN108839164A (en) | 2018-06-07 | 2018-06-07 | A kind of method of solvent-free wood surface hydrophobically modified |
Country Status (1)
| Country | Link |
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| CN (1) | CN108839164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112847704A (en) * | 2019-11-12 | 2021-05-28 | 东北林业大学 | Functional wood with wave-absorbing and light aging-resistant performances and preparation method thereof |
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|---|---|---|---|---|
| CN103448116A (en) * | 2013-09-04 | 2013-12-18 | 东北林业大学 | Method for improving mechanical stability of super-hydrophobic wood |
| CN103817756A (en) * | 2014-03-14 | 2014-05-28 | 福州大学 | Method for quickly preparing silicon dioxide/wood composite material |
| CN105599077A (en) * | 2015-12-18 | 2016-05-25 | 中国林业科学研究院木材工业研究所 | Method for preparation of superhydrophobic timber on the basis of sol-gel method |
| CN106142249A (en) * | 2016-07-29 | 2016-11-23 | 安徽昌发实业有限公司 | A kind of wood surface hydrophobic insect-prevention treatment method |
| CN107379179A (en) * | 2017-09-08 | 2017-11-24 | 安徽嘉美工艺品有限公司 | A kind of wood surface dewatering process method |
-
2018
- 2018-06-07 CN CN201810576810.XA patent/CN108839164A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448116A (en) * | 2013-09-04 | 2013-12-18 | 东北林业大学 | Method for improving mechanical stability of super-hydrophobic wood |
| CN103817756A (en) * | 2014-03-14 | 2014-05-28 | 福州大学 | Method for quickly preparing silicon dioxide/wood composite material |
| CN105599077A (en) * | 2015-12-18 | 2016-05-25 | 中国林业科学研究院木材工业研究所 | Method for preparation of superhydrophobic timber on the basis of sol-gel method |
| CN106142249A (en) * | 2016-07-29 | 2016-11-23 | 安徽昌发实业有限公司 | A kind of wood surface hydrophobic insect-prevention treatment method |
| CN107379179A (en) * | 2017-09-08 | 2017-11-24 | 安徽嘉美工艺品有限公司 | A kind of wood surface dewatering process method |
Non-Patent Citations (2)
| Title |
|---|
| 关志宇等: "《药物制剂辅料与包装材料》", 31 January 2017, 北京：中国医药科技出版社 * |
| 陈泽君等: ""杉木/ 二氧化硅复合材料的制备及其尺寸稳定性" ，陈泽君等, 第42-44页，"林业科技开发"，第22卷，第5期", 《林业科技开发》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112847704A (en) * | 2019-11-12 | 2021-05-28 | 东北林业大学 | Functional wood with wave-absorbing and light aging-resistant performances and preparation method thereof |
| CN112847704B (en) * | 2019-11-12 | 2022-03-22 | 东北林业大学 | Preparation method of functional wood with wave-absorbing and light aging-resistant properties |
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Application publication date: 20181120 |