CN112077966A - Environment-friendly flame-retardant wood modification method - Google Patents
Environment-friendly flame-retardant wood modification method Download PDFInfo
- Publication number
- CN112077966A CN112077966A CN202010973091.2A CN202010973091A CN112077966A CN 112077966 A CN112077966 A CN 112077966A CN 202010973091 A CN202010973091 A CN 202010973091A CN 112077966 A CN112077966 A CN 112077966A
- Authority
- CN
- China
- Prior art keywords
- wood board
- wood
- flame retardant
- temperature
- retardant
- 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
Images
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
- B27K3/52—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
- 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
- B27K3/16—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
- 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
- B27K2240/30—Fireproofing
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 wood modification, and particularly relates to an environment-friendly flame-retardant wood modification method. The invention disperses various metal salts in ethanol solution, enters wood gaps through vacuum impregnation, and then vacuum impregnates the wood in alkalescent water solution containing carbonate radical and bicarbonate radical to generate various indissolvable metal salt precipitates in situ, so that the temperature can be desorbed thermally when the wood is heated, and a metal oxide compact layer is formed at the same time, thereby reducing heat transfer and achieving the purpose of flame retardance. The invention has the advantages of endowing modified wood with flame retardant within multiple temperature ranges, low solution alkalinity, small damage to wood, easy volatilization of solvent, convenient subsequent treatment, satisfaction of furniture material standards, easy treatment of waste liquid and environmental protection.
Description
Technical Field
The invention belongs to the field of wood modification, and particularly relates to an environment-friendly flame-retardant wood modification method.
Background
Wood modification refers to physical or (and) chemical processing methods that improve or alter the physical, mechanical, chemical, and structural characteristics of wood. The aim is to improve the natural decay (moth) resistance, acid resistance, alkali resistance, flame retardance, wear resistance, color stability, mechanical strength and dimensional stability of wood, wherein the flame retardance modification of wood comprises impregnation with conventional flame retardants, chemical modification, insertion of inorganic substances or utilization of surface coatings, and at present, the flame retardants of wood products commonly used in industry are boric acid, borax, diboron trioxide, potassium borate, ammonium borate, monoammonium phosphate, silicon dioxide, titanium dioxide, diammonium phosphate and the like, wherein the flame retardance treatment of some flame retardants can cause the deterioration of material performance, environmental and safety problems, or cause the significant increase of the moisture absorption of materials, or can release toxic or carcinogenic compounds in unexpected fires.
The Chinese patent with patent publication number CN 1044890069B and publication number 2017.04.05 discloses CaCO3The wood composite material and the preparation method thereof comprise the following steps: (a) putting the wood into NaOH solution, vacuumizing, dipping and drying for later use; (b) with CaCl2、MgCl2Dipping in a solution; (c) with Na2CO3Impregnation in solution to obtain CaCO3A wood composite material.
However, in the patent of the invention, the Ca salt added singly can not further improve the flame retardant property of the wood at the low temperature in the initial stage of the fire and the high temperature in the fire, and simultaneously, NaOH adopted by the preparation method corrodes the wood and can not meet the use standard of household wood, and the problems of high energy consumption of high-concentration alkali liquor, high treatment cost of alkaline waste liquid and low drying rate of aqueous solution exist.
Disclosure of Invention
The invention aims to provide an environment-friendly flame-retardant wood modification method, which can disperse various metal salts in an ethanol solution, enter wood gaps through vacuum impregnation, and then vacuum-impregnate the wood in a weak alkaline aqueous solution containing carbonate radicals and bicarbonate radicals to generate various insoluble metal salt precipitates in situ, so that the heat desorption temperature can be reached when the wood is heated, a metal oxide compact layer can be formed at the same time, the heat transfer is reduced, and the flame-retardant purpose is achieved. The invention has the advantages of endowing modified wood with flame retardant within multiple temperature ranges, low solution alkalinity, small damage to wood, easy volatilization of solvent, convenient subsequent treatment, satisfaction of furniture material standards, easy treatment of waste liquid and environmental protection.
The technical scheme adopted by the invention for solving the problems is as follows: an environment-friendly flame-retardant wood modification method is characterized by sequentially comprising the following steps:
s1, processing the wood board raw material into a wood board;
s2, preparing a first soaking solution for introducing a flame-retardant component, and soaking the wood board to obtain a first treated wood board;
s3, preparing a second soaking solution for introducing a precipitation component, and soaking the first treated wood board to obtain a second treated wood board;
and S4, balancing, air-drying and compacting the second treated wood board to obtain the wood board with high flame retardant property.
The further preferred technical scheme is as follows: in step S1, the wood board raw material is any one of northeast China ash, beech, fir and fast-growing poplar, the long side length of the wood board is 5-2220cm, the short side length of the wood board is 1-1440cm, and the thickness of the wood board is 1-3cm, the processing includes cutting the wood board raw material to obtain the wood board, sanding the burrs and edges on the surface of the wood board, and air-drying.
In the present invention, most of the wood boards available in the market are particle boards made of wood flour and wood fiber, and have large thickness and low relative strength and resistance. Therefore, the plywood manufactured by gluing the wood boards has the advantages of lighter weight and stronger strength, and has the advantages of light weight and high strength when the flame-retardant wood boards are manufactured at the later stage.
On the other hand, the wood board raw material is quick-growing wood, the wood board raw material has the advantages of low price, easiness in obtaining, low density and easiness in liquid immersion, and the air drying step is used for increasing the internal pores of the wood board and facilitating liquid immersion.
The further preferred technical scheme is as follows: in step S2, the solute of the first soak solution includes one or both of a high temperature flame retardant and a low temperature flame retardant, and a first soak solution solvent, the concentration of the high temperature flame retardant is 0.55 to 0.8mol/L, the concentration of the low temperature flame retardant is 0.55 to 0.8mol/L, the volume mixing ratio of the wood board and the first soak solution is 1:3 to 6, and the soaking time is 6 to 12 hours.
The further preferred technical scheme is as follows: in step S1, the wood board raw material is any one of northeast China ash, beech, fir and fast-growing poplar, the long side length of the wood board is 5-2220cm, the short side length of the wood board is 1-1440cm, and the thickness of the wood board is 1-3cm, the processing includes cutting the wood board raw material to obtain the wood board, sanding the burrs and edges on the surface of the wood board, and air-drying.
The further preferred technical scheme is as follows: in step S2, the high-temperature flame retardant is any one of calcium chloride and calcium nitrate, and the low-temperature flame retardant is any one of magnesium chloride and magnesium nitrate.
The further preferred technical scheme is as follows: in step S2, the first soak solvent is absolute ethanol.
The further preferred technical scheme is as follows: in step S3, the second soaking solution comprises a precipitant and a second soaking solution solvent, the concentration of the precipitant is 1.5-2mol/L, the volume mixing ratio of the first treated wood board to the second soaking solution is 1:3-6, and the soaking time is 15-18 h.
The further preferred technical scheme is as follows: the precipitant is any one of sodium carbonate, potassium carbonate, sodium bicarbonate and potassium bicarbonate, and the solvent of the second soak solution is pure water.
The further preferred technical scheme is as follows: in step S3, calcium carbonate particles, magnesium carbonate particles, and magnesium hydroxide particles are present inside the second treated wood board.
In the invention, the purpose of soaking the wood board by the first soaking solution is to introduce specific high-temperature metal salt flame retardant and low-temperature metal flame retardant into the wood board to obtain the first treated wood board, and the purpose of soaking the first treated wood board by the second soaking solution is to introduce carbonate ions and an alkaline environment into the first treated wood board to form a slightly soluble metal salt precipitate in situ.
On the other hand, compared with the aqueous solvent, the alcohol solvent is easier to volatilize, thereby facilitating the subsequent treatment work.
On the other hand, the calcium ions in the first soaking solution and the carbonate ions or bicarbonate ions in the second soaking solution react under the weak alkaline condition to generate calcium carbonate precipitates, and the calcium carbonate can generate pyrolysis phenomenon at the temperature of 750-900 ℃ to absorb heat to generate calcium oxide and carbon dioxide, so that the heat resistance and the flame retardance of the wood board at high temperature can be improved. The magnesium ions in the first soaking solution and the carbonate ions in the second soaking solution react under an alkaline condition to generate magnesium carbonate and magnesium hydroxide precipitates, and the magnesium carbonate and the magnesium hydroxide can absorb heat to decompose at 350-500 ℃, so that the heat resistance and the flame retardance of the wood board at low temperature can be improved.
The further preferable technical scheme is that in the step S4, the second wood board treatment balancing step is balancing at the temperature of 18-26 ℃ and the relative humidity of 20-65% for 24-48h, the second wood board treatment air drying step is drying at the temperature of 100-120 ℃ for 24-48h, and the second wood board treatment compacting step is compacting at the temperature of 100-150 ℃ and the pressure of 4-6MPa for 6-24 h.
In the invention, the balancing step is to allow the insoluble metal salt to precipitate and further generate, and to volatilize the solvent initially, and the compacting step is to further enhance the density of the second treated wood board, so as to enhance the mechanical strength of the second treated wood board and improve the practicability of the second treated wood board, and reduce the air content in the second treated wood board, so that a carbonized layer can be formed more quickly when the second treated wood board is in a high-temperature environment, thereby reducing the heat release and improving the flame retardance and the heat resistance of the second treated wood board.
The further preferable technical scheme is that the wood board is provided with a low-temperature flame-retardant region at the temperature of 350-500 ℃, the wood board is provided with a high-temperature flame-retardant region at the temperature of 750-900 ℃, and the wood board is provided with a compact metal oxide layer flame-retardant region at the temperature of 1000-1500 ℃.
In the invention, the magnesium carbonate and magnesium hydroxide particles absorb heat to decompose at 500 ℃ of 350-ion, the calcium carbonate particles absorb heat to decompose at 900 ℃ of 750-ion, the calcium carbonate generates calcium oxide at 1500 ℃ of 900-ion, the magnesium carbonate and magnesium hydroxide generate magnesium oxide at 1500 ℃ of 700-ion, the calcium oxide and the magnesium oxide generate a compact metal oxide layer at 1500 ℃ of 1000-ion to play a role in flame retardance, and the calcium carbonate particles, the magnesium carbonate particles and the magnesium hydroxide particles play two roles in improving the flame retardance of the wood board, firstly, the calcium carbonate particles, the magnesium carbonate particles and the magnesium hydroxide particles respectively desorb heat, secondly, the compact metal oxide layer is formed together to play a role in flame retardance, because the single metal oxide layer is too loose and obviously has no protection effect, and the single metal oxide layer and other metal oxides can form a composite compact metal oxide layer.
The invention disperses various metal salts in ethanol solution, enters wood gaps through vacuum impregnation, and then vacuum impregnates the wood in alkalescent water solution containing carbonate radical and bicarbonate radical to generate various indissolvable metal salt precipitates in situ, so that the temperature can be desorbed thermally when the wood is heated, and a metal oxide compact layer is formed at the same time, thereby reducing heat transfer and achieving the purpose of flame retardance. The invention has the advantages of endowing modified wood with flame retardant within multiple temperature ranges, low solution alkalinity, small damage to wood, easy volatilization of solvent, convenient subsequent treatment, satisfaction of furniture material standards, easy treatment of waste liquid and environmental protection.
Drawings
FIG. 1 is a scanning electron microscope image of a flame-retardant wood board in example 1 of the present invention.
FIG. 2 is a scanning electron microscope image of the flame-retardant wood board in example 2 of the present invention.
FIG. 3 is a scanning electron microscope image of the flame-retardant wood board in example 3 of the present invention.
FIG. 4 is a thermogravimetric analysis chart of the flame-retardant wood boards of examples 1, 2 and 3 of the present invention.
FIG. 5 is a graph showing the mechanical strength analysis of example 1 of the present invention and an unmodified wood board.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example 1
As shown in the attached figure 1, a wood board with high flame retardant property is characterized in that: the long side length of the wood board is 100cm, the short side length of the wood board is 10cm, and the thickness of the wood board is 2cm, and the preparation method comprises the following steps:
s1: selecting fast-growing poplar as a wood board raw material, cutting the fast-growing poplar to obtain the wood board, sanding burrs and edges on the surface of the wood board, and air-drying.
S2: adding 8mol of calcium chloride and 5mol of magnesium chloride into 10L of absolute ethyl alcohol to obtain a first soaking solution, soaking the wood board in the first soaking solution, wherein the volume ratio of the wood board to the first soaking solution is 1:5, and the soaking time is 10 hours.
S3: and adding 13mol of sodium bicarbonate into 10L of pure water to obtain a second soaking solution for soaking the first treated wood board, wherein the volume ratio of the first treated wood board to the second soaking solution is 1:5, and the soaking time is 16 h.
S4: and (3) balancing the second treated wood board at the temperature of 26 ℃ and the relative humidity of 65% for 48h, then baking at the temperature of 120 ℃ for 48h, and finally compacting at the temperature of 150 ℃ and under the pressure of 6Mpa for 24h to finally obtain the high-flame-retardancy wood board.
The thermal stability of the high flame-retardant wood board in example 1 is shown by the line a in fig. 4, and it can be clearly seen in the figure that the wood board has a phenomenon of significant quality reduction in the ranges of 350-.
The mechanical properties of the wood board with high flame retardant property in example 1 are shown in fig. 5, and it can be clearly seen that the tensile breaking force of the modified wood board is 53.8MPa, while the tensile breaking force of the unmodified wood board is 20.8MPa, and the mechanical strength of the modified wood board is increased by 159% compared with the unmodified wood board.
Example 2
As shown in fig. 2, a wood board with high flame retardant property is characterized in that: the long side length of the wood board is 100cm, the short side length of the wood board is 10cm, and the thickness of the wood board is 2cm, and the preparation method comprises the following steps:
s1: selecting fast-growing poplar as a wood board raw material, cutting the fast-growing poplar to obtain the wood board, sanding burrs and edges on the surface of the wood board, and air-drying.
S2: adding 8mol of calcium chloride into 10L of absolute ethyl alcohol to obtain a first soaking solution, soaking the wood board in the first soaking solution, wherein the volume ratio of the wood board to the first soaking solution is 1:5, and the soaking time is 10 hours.
S3: and adding 13mol of sodium bicarbonate into 10L of pure water to obtain a second soaking solution for soaking the first treated wood board, wherein the volume ratio of the first treated wood board to the second soaking solution is 1:5, and the soaking time is 16 h.
S4: and (3) balancing the second treated wood board at the temperature of 26 ℃ and the relative humidity of 65% for 48h, then baking at the temperature of 120 ℃ for 48h, and finally compacting at the temperature of 150 ℃ and under the pressure of 6Mpa for 24h to finally obtain the high-flame-retardancy wood board.
The thermal stability of the high flame-retardant wood board in example 2 is shown by the line b in fig. 4, and it is evident that the quality of the wood board is significantly reduced in the range of 750-1500 ℃, indicating that the calcium carbonate particles function to hinder the decomposition of the chemical components of the wood, but compared with example 1, example 2 cannot improve the flame retardancy of the wood board in the ranges of 350-500 ℃ and 1000-1500 ℃.
Example 3
As shown in fig. 3, a wood board with high flame retardant property is characterized in that: the long side length of the wood board is 100cm, the short side length of the wood board is 10cm, and the thickness of the wood board is 2cm, and the preparation method comprises the following steps:
s1: selecting fast-growing poplar as a wood board raw material, cutting the fast-growing poplar to obtain the wood board, sanding burrs and edges on the surface of the wood board, and air-drying.
S2: and adding 5mol of magnesium chloride into 10L of absolute ethyl alcohol to obtain a first soaking solution, soaking the wood board in the first soaking solution, wherein the volume ratio of the wood board to the first soaking solution is 1:5, and the soaking time is 10 hours.
S3: and adding 13mol of sodium bicarbonate into 10L of pure water to obtain a second soaking solution for soaking the first treated wood board, wherein the volume ratio of the first treated wood board to the second soaking solution is 1:5, and the soaking time is 16 h.
S4: and (3) balancing the second treated wood board at the temperature of 26 ℃ and the relative humidity of 65% for 48h, then baking at the temperature of 120 ℃ for 48h, and finally compacting at the temperature of 150 ℃ and under the pressure of 6Mpa for 24h to finally obtain the high-flame-retardancy wood board.
The thermal stability of the high flame retardant wood board in example 3 is shown as the line c in fig. 4, and it is obvious that the quality of the wood board is obviously reduced in the range of 350-.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the present invention.
Claims (10)
1. An environment-friendly flame-retardant wood modification method is characterized by sequentially comprising the following steps:
s1, processing the wood board raw material into a wood board;
s2, preparing a first soaking solution for introducing a flame-retardant component, and soaking the wood board to obtain a first treated wood board;
s3, preparing a second soaking solution for introducing a precipitation component, and soaking the first treated wood board to obtain a second treated wood board;
and S4, balancing, air-drying and compacting the second treated wood board to obtain the wood board with high flame retardant property.
2. The method for modifying environment-friendly flame retardant wood according to claim 1, wherein the method comprises the following steps: in step S1, the wood board raw material is any one of northeast China ash, beech, fir and fast-growing poplar, the long side length of the wood board is 5-2220cm, the short side length of the wood board is 1-1440cm, and the thickness of the wood board is 1-3cm, the processing includes cutting the wood board raw material to obtain the wood board, sanding the burrs and edges on the surface of the wood board, and air-drying.
3. The method for modifying environment-friendly flame retardant wood according to claim 1, wherein the method comprises the following steps: in step S2, the solute of the first soaking solution includes one or both of a high-temperature flame retardant and a low-temperature flame retardant, and a first soaking solution solvent, the concentration of the high-temperature flame retardant is 0.55 to 0.8mol/L, the concentration of the low-temperature flame retardant is 0.55 to 0.8mol/L, the volume mixing ratio of the wood board and the first soaking solution is 1:3 to 6, and the soaking time is 6 to 12 hours.
4. The method for modifying environment-friendly flame retardant wood according to claim 3, wherein the method comprises the following steps: in step S2, the high-temperature flame retardant is any one of calcium chloride and calcium nitrate, and the low-temperature flame retardant is any one of magnesium chloride and magnesium nitrate.
5. The method for modifying environment-friendly flame retardant wood according to claim 3, wherein the method comprises the following steps: in step S2, the first soak solvent is absolute ethanol.
6. The method for modifying environment-friendly flame retardant wood according to claim 1, wherein the method comprises the following steps: in step S3, the second soaking solution comprises a precipitant and a second soaking solution solvent, the concentration of the precipitant is 1.5-2mol/L, the volume mixing ratio of the first treated wood board to the second soaking solution is 1:3-6, and the soaking time is 15-18 h.
7. The method for modifying environment-friendly flame retardant wood according to claim 6, wherein the method comprises the following steps: in step S3, the precipitant is any one of sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate, and the solvent of the second soaking solution is pure water.
8. The method for modifying environment-friendly flame retardant wood according to claim 1, wherein the method comprises the following steps: in step S3, calcium carbonate particles, magnesium carbonate particles, and magnesium hydroxide particles are present inside the second treated wood board.
9. The method for modifying environment-friendly flame retardant wood according to claim 1, wherein the method comprises the following steps: in the step S4, the second wood board treatment balancing step is to balance for 24-48h under the conditions of the temperature of 18-26 ℃ and the relative humidity of 20-65%, the second wood board treatment air drying step is to bake for 24-48h under the temperature of 100-.
10. The method for modifying environment-friendly flame retardant wood according to claim 8, wherein: the wood board is provided with a low-temperature flame-retardant region at the temperature of 350-1500 ℃, the wood board is provided with a high-temperature flame-retardant region at the temperature of 750-900 ℃, and the wood board is provided with a compact metal oxide layer flame-retardant region at the temperature of 1000-1500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973091.2A CN112077966A (en) | 2020-09-16 | 2020-09-16 | Environment-friendly flame-retardant wood modification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973091.2A CN112077966A (en) | 2020-09-16 | 2020-09-16 | Environment-friendly flame-retardant wood modification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112077966A true CN112077966A (en) | 2020-12-15 |
Family
ID=73737105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010973091.2A Pending CN112077966A (en) | 2020-09-16 | 2020-09-16 | Environment-friendly flame-retardant wood modification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112077966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115635557A (en) * | 2022-10-13 | 2023-01-24 | 南京林业大学 | Preparation method of calcified flame-retardant bamboo laminated material |
| WO2023130652A1 (en) * | 2022-01-10 | 2023-07-13 | 东北林业大学 | Flame-retardant wood, preparation method therefor and use of metal halide |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234496A (en) * | 2008-02-27 | 2008-08-06 | 中南林业科技大学 | Method for preventing eucalyptus wood from shrinking |
| CN104890069A (en) * | 2015-06-25 | 2015-09-09 | 安徽农业大学 | Composite CaCO<3>/wood material and manufacturing method thereof |
| CN106182298A (en) * | 2016-07-18 | 2016-12-07 | 国际竹藤中心 | A kind of preparation method of the in-situ modified bamboo wood of nano-calcium carbonate |
| CN107127848A (en) * | 2017-05-14 | 2017-09-05 | 张芸 | A kind of preparation method of flame-retardant smoke inhibition timber |
| WO2019051212A1 (en) * | 2017-09-08 | 2019-03-14 | Dte Materials Incorporated | Selectively depolymerizing cellulosic materials for use as thermal and acoustic insulators |
| CN111037686A (en) * | 2019-12-31 | 2020-04-21 | 河南农业大学 | Preparation method of silicate flame-retardant compact wood |
-
2020
- 2020-09-16 CN CN202010973091.2A patent/CN112077966A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234496A (en) * | 2008-02-27 | 2008-08-06 | 中南林业科技大学 | Method for preventing eucalyptus wood from shrinking |
| CN104890069A (en) * | 2015-06-25 | 2015-09-09 | 安徽农业大学 | Composite CaCO<3>/wood material and manufacturing method thereof |
| CN106182298A (en) * | 2016-07-18 | 2016-12-07 | 国际竹藤中心 | A kind of preparation method of the in-situ modified bamboo wood of nano-calcium carbonate |
| CN107127848A (en) * | 2017-05-14 | 2017-09-05 | 张芸 | A kind of preparation method of flame-retardant smoke inhibition timber |
| WO2019051212A1 (en) * | 2017-09-08 | 2019-03-14 | Dte Materials Incorporated | Selectively depolymerizing cellulosic materials for use as thermal and acoustic insulators |
| CN111037686A (en) * | 2019-12-31 | 2020-04-21 | 河南农业大学 | Preparation method of silicate flame-retardant compact wood |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130652A1 (en) * | 2022-01-10 | 2023-07-13 | 东北林业大学 | Flame-retardant wood, preparation method therefor and use of metal halide |
| CN115635557A (en) * | 2022-10-13 | 2023-01-24 | 南京林业大学 | Preparation method of calcified flame-retardant bamboo laminated material |
| CN115635557B (en) * | 2022-10-13 | 2024-03-29 | 南京林业大学 | Preparation method of calcified flame-retardant bamboo integrated material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102114650B (en) | Antiflaming plywood or veneer lamination and manufacturing method thereof | |
| CN112077966A (en) | Environment-friendly flame-retardant wood modification method | |
| CN103878847A (en) | Fire-retardant wood and preparation method and application thereof | |
| CN105171866B (en) | Method for modifying wood through combination of resin impregnation reinforcing, vacuum drying and heat treatment | |
| CN102259363A (en) | Bamboo wood anti-flaming impregnation liquid and production method and application thereof | |
| JP2006219329A (en) | Stable liquid composition of boron compound and its manufacturing method and its application | |
| CN112692945A (en) | Water-based bio-based intumescent flame-retardant coating and preparation method and application thereof | |
| CN104085004B (en) | A kind of preparation method from the hydrophobic plank of fire-retardant fireproof | |
| CN103009449B (en) | A kind of fire-retardant compression solid wood material and production method thereof | |
| CN111926934B (en) | Preparation method of composite flame retardant for fireproof heat-insulation decorative board | |
| CN112606143A (en) | Preparation method of halogen-free flame-retardant wood | |
| CN108642962A (en) | A kind of high temperature resistant paper halogen-free flame retardants | |
| CN109535689A (en) | A kind of polyurethane wood-imitation material core-shell type flame retardant and preparation method | |
| JP4439234B2 (en) | Aqueous solution of boron compound stable at room temperature, its production method and its use | |
| CN102303346B (en) | B-P-Mg-Si series density fiber board inflaming-retarding mildewproof agent and preparation and application thereof | |
| CN110355845B (en) | Preparation method of reinforced and flame-retardant carbonized rubber wood board | |
| CN101845745B (en) | Manufacturing method of multi-functional modified acrylic fibers with high moisture absorption and flame resistance | |
| CN114012841B (en) | Low-smoke antirust flame-retardant plywood and manufacturing method thereof | |
| CN111070356B (en) | Flame-retardant treatment process for wood plate for home decoration | |
| CN110733093B (en) | Fir flame-retardant modification treatment method | |
| CN104858997A (en) | Multifunctional wood flame retardant modifier | |
| CN104669378A (en) | Composite type wood fire retardant and preparation method and application thereof | |
| Zhang et al. | Synergistic effect of hierarchically porous 4A zeolite on improving the fire retardancy and reducing the fire toxicity of ammonium polyphosphate treated wood composites | |
| CN113580294A (en) | Preparation method of environment-friendly flame-retardant fiberboard | |
| KR101514899B1 (en) | Composition and Manufacturing Method of self-exitinguishing fire-retardant wood by free carbon, metallic salts and micro-fibril by Modifide of Wood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |
|
| RJ01 | Rejection of invention patent application after publication |