CN115026917A - Preparation method of adhesive-free flexible rubber wood - Google Patents
Preparation method of adhesive-free flexible rubber wood Download PDFInfo
- Publication number
- CN115026917A CN115026917A CN202111516764.2A CN202111516764A CN115026917A CN 115026917 A CN115026917 A CN 115026917A CN 202111516764 A CN202111516764 A CN 202111516764A CN 115026917 A CN115026917 A CN 115026917A
- Authority
- CN
- China
- Prior art keywords
- rubber
- wood
- adhesive
- porous
- liquid
- 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
Links
- 229920002531 Rubberwood Polymers 0.000 title claims abstract description 5
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 239000002023 wood Substances 0.000 claims abstract description 38
- 229920001971 elastomer Polymers 0.000 claims abstract description 26
- 239000005060 rubber Substances 0.000 claims abstract description 26
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract 7
- 229920005610 lignin Polymers 0.000 claims description 3
- 229920002488 Hemicellulose Polymers 0.000 claims description 2
- 244000043261 Hevea brasiliensis Species 0.000 claims 1
- 229920003052 natural elastomer Polymers 0.000 claims 1
- 229920001194 natural rubber Polymers 0.000 claims 1
- 239000012265 solid product Substances 0.000 claims 1
- 229920003051 synthetic elastomer Polymers 0.000 claims 1
- 239000005061 synthetic rubber Substances 0.000 claims 1
- 239000008204 material by function Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
-
- 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
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
-
- 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
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic impregnating agents
-
- 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
- B27K3/34—Organic impregnating agents
-
- 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
- B27K2240/10—Extraction of components naturally occurring in wood, cork, straw, cane or reed
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 field of novel wood, and particularly relates to a preparation method of a flexible rubber wood without an adhesive. According to the invention, the raw wood material is delignified to obtain the porous material with natural vertical hole orientation, and then the flexible rubber liquid is immersed or absorbed into the porous channel in the wood and then cured to obtain the rubber composite wood board without the adhesive. The method is expected to replace the rubber composite wood prepared by the traditional adhesive method and be applied to building boards and flexible functional materials.
Description
Technical Field
The invention belongs to the field of novel wood, and particularly relates to a preparation method of a flexible rubber wood without an adhesive.
Background
The development of novel wood products and the improvement of the added value of the wood products are carried out, wherein the most important method is to endow some new functions which are not possessed by the traditional wood or enhance the original functions through a certain innovative technology, and the product optimization is realized.
The functional combination of wood and rubber is an important method for optimizing the performance of wood. At present, the traditional "trialdehyde" adhesive (CN 102321446A) or isocyanate adhesive (CN 201811177602.9) is basically used in the wood-rubber functional composite material, but the bonding strength, the interface water resistance and the adhesive layer toughness are still insufficient.
The natural wood has a vertically oriented ordered pore structure, and a porous material (CN 113046030A) with natural vertical pore orientation and excellent mechanical properties can be obtained by delignifying a raw wood material. If the polymer material is introduced into the porous channels of the wood to replace the adhesive of the traditional wood-rubber composite material, the environment and health problems caused by the trialdehyde adhesive or the MDI adhesive are hopefully overcome, and the polymer material is applied to building boards and functional boards. Meanwhile, the rubber has the flexibility of rubber, or can be applied to the field of sensing materials.
Disclosure of Invention
In order to solve the problem of interface gluing of the composite functions of wood and rubber, the patent innovatively provides a method for introducing flexible rubber into a porous wood board by removing lignin.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
adding blocky logs into a mixed solution of 0.1-2.5M NaOH and 0.1-2.5M NaHSO 3; treating at 30-100 deg.C for 1-24 hr to remove lignin and hemicellulose. Then adding the mixture into NaClO solution with the mass concentration of 1-20%, and treating for 1-24h at 20-80 ℃ to obtain white porous wood blocks;
further, the mass ratio of the NaOH to the NaHSO3 is as follows: 0.1: 99.9-99.9: 0.1
Then, the white porous wood block is immersed in the uncured rubber solution, the rubber solution is immersed in the porous channel of the wood block in the normal pressure or low pressure environment, and then the temperature is raised for curing.
Further, it is preferable that the curing temperature is 30 to 150 ℃.
Compared with the prior art, the invention has the following outstanding characteristics and remarkable advantages:
1. the invention innovatively provides a flexible rubber composite wood prepared by taking porous wood as a base material, and the material can be applied to flexible sensing, building and functional boards;
2. the invention is also an exploratory research for functionalizing the service performance of the building interior decoration material and improving the added value of products, and provides a new development direction for the wood-based functional composite board.
3. The flexible rubber soaked in the functional wood obtained by the invention has the advantages of stable structure and difficult separation.
4. The method has the advantages of simple and environment-friendly operation flow and process, easy industrial production, low cost and suitability for popularization and application.
Drawings
FIG. 1 is a diagram showing the form of a raw wood
FIG. 2 is a diagram of a porous wood block obtained after bleaching
FIG. 3 is a diagram of a rubber/wood strand composite material
Figure 4 is a graph of a rubber/wood strip composite folded.
Claims (6)
1. A preparation method of an adhesive-free flexible rubber wood is characterized in that a traditional adhesive is replaced, and rubber liquid or other flexible materials are directly sucked into pore channels of a porous wood board and then cured to obtain the flexible wood filled in the porous wood block by rubber.
2. The porous wood board according to claim 1 is a wood board from which hemicellulose and lignin are removed from raw wood.
3. According to the claims 1 and 2, the treated solid product is immersed in an uncured rubber liquid, rubber is absorbed into the porous wood block, and then the temperature is raised for curing, so that the elastic non-adhesive rubber composite flexible wood board is obtained.
4. The rubber liquid of claim 3 being a liquid unvulcanized or cured natural rubber or synthetic rubber.
5. The method for immersing rubber liquid into the pore channels of the porous wood block according to claim 4 is normal pressure or negative pressure; the porous wood block can be placed in a negative pressure device (such as a vacuum box) to suck rubber liquid into the porous wood block more quickly, and then the rubber is solidified to obtain the rubber plate without the adhesive.
6. The elevated temperature curing of claim 5 at a temperature of 30-150 ℃ for a curing time of 1-20 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111516764.2A CN115026917A (en) | 2021-12-13 | 2021-12-13 | Preparation method of adhesive-free flexible rubber wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111516764.2A CN115026917A (en) | 2021-12-13 | 2021-12-13 | Preparation method of adhesive-free flexible rubber wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115026917A true CN115026917A (en) | 2022-09-09 |
Family
ID=83118473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111516764.2A Pending CN115026917A (en) | 2021-12-13 | 2021-12-13 | Preparation method of adhesive-free flexible rubber wood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115026917A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10215616A1 (en) * | 2002-04-09 | 2003-10-30 | Tesa Ag | Eco-friendly, multi-purpose adhesive largely from vegetable materials contains an extract of symphytum with varying amounts of water |
| EP2727690A1 (en) * | 2012-11-02 | 2014-05-07 | Stelzer, Roland | Wooden element containing natural rubber, its use and method for its preparation |
| CN109337380A (en) * | 2018-09-29 | 2019-02-15 | 北京卫星制造厂有限公司 | A kind of fiber reinforced flexible aerogel composite and preparation method thereof |
| CN110746640A (en) * | 2019-11-11 | 2020-02-04 | 浙江农林大学 | Capacitive sensor material and preparation method and application thereof |
| US20200282591A1 (en) * | 2017-04-03 | 2020-09-10 | University Of Maryland, College Park | Flexible wood structures and devices, and methods for fabricating and use thereof |
-
2021
- 2021-12-13 CN CN202111516764.2A patent/CN115026917A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10215616A1 (en) * | 2002-04-09 | 2003-10-30 | Tesa Ag | Eco-friendly, multi-purpose adhesive largely from vegetable materials contains an extract of symphytum with varying amounts of water |
| EP2727690A1 (en) * | 2012-11-02 | 2014-05-07 | Stelzer, Roland | Wooden element containing natural rubber, its use and method for its preparation |
| US20200282591A1 (en) * | 2017-04-03 | 2020-09-10 | University Of Maryland, College Park | Flexible wood structures and devices, and methods for fabricating and use thereof |
| CN109337380A (en) * | 2018-09-29 | 2019-02-15 | 北京卫星制造厂有限公司 | A kind of fiber reinforced flexible aerogel composite and preparation method thereof |
| CN110746640A (en) * | 2019-11-11 | 2020-02-04 | 浙江农林大学 | Capacitive sensor material and preparation method and application thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220909 |