CN108341634B - Flame-retardant wood fiber board and preparation method thereof - Google Patents
Flame-retardant wood fiber board and preparation method thereof Download PDFInfo
- Publication number
- CN108341634B CN108341634B CN201710686336.1A CN201710686336A CN108341634B CN 108341634 B CN108341634 B CN 108341634B CN 201710686336 A CN201710686336 A CN 201710686336A CN 108341634 B CN108341634 B CN 108341634B
- Authority
- CN
- China
- Prior art keywords
- silicate
- wood
- fiber board
- cement
- flame
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a flame-retardant wood fiber board and a preparation method thereof, wherein the flame-retardant wood fiber board comprises the following raw materials: the wood wool cement comprises wood wool, cement, silicate, magnesium oxide and magnesium sulfate, wherein the wood wool accounts for 40-50 parts by weight, the cement accounts for 45-55 parts by weight, and the sum of the silicate, the magnesium oxide and the magnesium sulfate accounts for 3-5 parts by weight; the flame-retardant wood fiber board does not need to use an adhesive, and can be prepared into a board after demolding is finished; the flame-retardant wood fiber board reaches A2 grade, and has good flame-retardant effect.
Description
Technical Field
The invention relates to the technical field of wood wool boards, in particular to a flame-retardant wood wool fiberboard and a preparation method thereof.
Background
In the 50-60 th of the 20 th century, the variety of sound absorption materials in China is few, wood-wool boards are the main sound absorption materials and heat insulation materials, are widely applied to industrial and civil buildings, and are particularly commonly found in buildings such as movie theaters, recording studios, broadcasting rooms, telephone rooms, conference rooms, report halls, auditoriums and the like.
Nowadays, with the increasing severity of fire-fighting requirements, the conventional wood-wool board cannot meet the A-grade flame-retardant requirement.
The No. CN101298153 discloses a method for preparing wood wool and wood wool boards, which comprises the steps of enabling single-board crushed aggregates to pass between paired carding and untwining rollers along the fiber direction, shearing the single-board crushed aggregates by a plurality of annular roller cutters which are parallel to each other along the axial direction on the surfaces of the two untwining rollers, and shearing the single-board crushed aggregates into wood wool along the fiber direction; paving wood filaments into a plate blank along the fiber direction; and pressing the plate blank into a wood wool plate. The wood-wool board prepared by the method has high strength, but poor flame retardant property, poor tension and low density, and has great influence on later maintenance and service life.
Application publication No. CN102653463A discloses a "wood wool board", selecting wood wool, cement and silicate, forming after sequentially passing through the processes of dipping, mixing and curing, wherein the mass ratio of the three raw materials is as follows: the wood wool board comprises 35-55% of wood wool, 40-64% of cement and 1-5% of silicate, and due to the proportion of the raw materials, the flame retardant property of the wood wool board can only reach B1 level, and the requirement for higher flame retardant property cannot be met.
Disclosure of Invention
In order to solve the problem of poor flame retardant property of the wood-wool board in the prior art, the invention aims to provide a flame-retardant wood-wool fiber board; therefore, the invention also provides a preparation method of the flame-retardant wood fiber board.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect of the present invention, a flame retardant wood fiber board is provided, which comprises the following raw materials: the wood wool cement comprises, by weight, 40-50 parts of wood wool, 45-55 parts of cement and 3-5 parts of silicate, magnesium oxide and magnesium sulfate.
Preferably, the cement is selected from high strength portland cements. The high-strength portland cement has high strength and can effectively shorten the curing time of cement products.
Preferably, the silicate is tricalcium silicate having the chemical formula 3 CaO. SiO2。
Preferably, the adding ratio of the silicate, the magnesium oxide and the magnesium sulfate is (1-2): 1.
The addition of silicate can improve the resistance of the fiber board to sulfate erosion, and the prepared fiber board has good water resistance, good heat resistance and high strength; magnesium oxide is added to improve the flame retardant property of the wood fiber board, but excessive magnesium oxide can corrode metal products, for example, a wood fiber sound-absorbing board is matched with a light steel keel, so that the corrosion phenomenon of the light steel is caused for a long time, and potential safety hazards are formed; magnesium sulfate is added to replace partial magnesium oxide, so that the flame retardant property of the wood fiber board is improved, and meanwhile, the corrosion problem caused by excessive magnesium oxide is avoided.
The silicate, the magnesium oxide and the magnesium sulfate have synergistic interaction, and in the test, when the silicate is added into a system consisting of wood wool and cement to prepare the fiberboard, the use amounts of the wood wool, the cement and the silicate are adjusted to ensure that the density of the fiberboard is 11kg/m2In the case of (2), the flame retardant effect is poor; when magnesium oxide is added into a system consisting of wood wool and cement, the density of the fiber board is 11kg/m2When the keel is used, the keel matched with the wood fiber board is seriously corroded; when magnesium sulfate is added into a system consisting of wood wool and cement, the flame retardant effect of the fiberboard can only reach B2 level no matter how the dosage of the wood wool, the cement and the magnesium sulfate is adjusted; when silicate, magnesium oxide and magnesium sulfate are respectively added into a system consisting of wood wool and cement, the density of the fiberboard can be simultaneously satisfied to be 11kg/m2And a2 flame retardant rating, and keels used with wood fiber board do not create corrosion problems.
In a second aspect of the present invention, a method for preparing the flame retardant wood fiber board is provided, which comprises the following steps:
s1, rotary cutting the log into wood filaments;
s2, dipping the wood wool prepared in the S1;
s3, weighing the wood wool, cement, silicate, magnesium oxide and magnesium sulfate soaked in the step S2, wherein the wood wool accounts for 40-50 parts by weight, the cement accounts for 45-55 parts by weight, and the sum of the silicate, the magnesium oxide and the magnesium sulfate accounts for 3-5 parts by weight, and mixing the materials;
s4, spreading the mixed materials on an empty template, cutting, prepressing and then carrying out primary curing treatment;
and S5, carrying out secondary curing treatment on the material processed in the step S4, and airing to obtain the flame-retardant wood wool fiberboard.
Preferably, the solution subjected to the impregnation treatment in S2 is a mixed solution of silicate, magnesium oxide and magnesium sulfate, wherein the ratio of magnesium oxide to magnesium sulfate is 2:1, and silicate accounts for 1-3% of the total mole amount.
Before mixing the wood wool with cement, silicate, magnesium oxide and magnesium sulfate, the wood wool is soaked, so that the wood wool is desugared and degreased at a high speed in the soaking process, and the combustion performance, mildew resistance and insect-proof performance of the board are improved.
Wherein, the first curing process in S4 includes: and (3) forming the plate by the pressure of machine equipment on a production line, wherein the curing time is 2-4 h.
Wherein the second curing process in S5 includes: the pressure process of 3 tons of cement briquettes on the plate is carried out, and the curing time is 1-2 h.
Compared with the prior art, the invention has the following beneficial effects: the flame-retardant wood-wool fiberboard does not need to use an adhesive, and can be prepared into a board after demolding is finished, so that the grains on the surface of wood wool can be kept, the curing time can be shortened, and the product can be kept to be shaped; according to the flame-retardant wood fiber board, the complex of silicate, magnesium oxide and magnesium sulfate is added into a system consisting of wood fibers and cement, so that the prepared fiber board is high in strength and moderate in weight and meets the flame-retardant requirement; the flame-retardant wood fiber board reaches A2 grade, and has good flame-retardant effect.
Detailed Description
The proportion of wood wool and cement is mainly determined by considering the surface density and weight of the board. When the flame-retardant wood fiber board is prepared, other components are kept unchanged, the use amounts of wood fibers and cement are adjusted, and the obtained experimental data and experimental results are shown in table 1.
TABLE 1
As can be seen from Table 1, when the wood wool is 40-50 parts by weight and the cement is 45-55 parts by weight, the prepared wood wool fiberboard is moderate in weight and convenient for suspended ceilings and wall surfaces.
Example 1
The preparation method of the flame-retardant wood fiber board comprises the following steps:
s1, sawing the log into small sections with the length of about 30cm, and rotationally cutting the small sections into wood filaments;
s2, extracting chips and dust from the rotary-cut wood filaments through a dust extraction mesh screen, and soaking the wood filaments in a mixed solution of silicate, magnesium oxide and magnesium sulfate for 24 hours;
s3, weighing 4000g of impregnated wood wool, 4500g of cement, 75g of silicate, 150g of magnesium oxide and 75g of magnesium sulfate, and uniformly mixing the materials;
s4, spreading the mixed material on a hollow template by a spreading machine, cutting and pre-pressing the mixed material, and then curing for the first time for 2 hours;
and S5, carrying out secondary curing for 1h, and airing to obtain the wood fiber board.
Example 2
The preparation method of the flame-retardant wood fiber board comprises the following steps:
s1, sawing the log into small sections with the length of about 30cm, and rotationally cutting the small sections into wood filaments;
s2, extracting chips and dust from the rotary-cut wood filaments through a dust extraction mesh screen, and soaking the wood filaments in a mixed solution of silicate, magnesium oxide and magnesium sulfate for 24 hours;
s3, weighing 5000g of impregnated wood wool, 5500g of cement, 120g of silicate, 100g of magnesium oxide and 80g of magnesium sulfate, and uniformly mixing the materials;
s4, spreading the mixed material on a hollow template by a spreading machine, cutting and prepressing the mixed material, and then carrying out primary curing for 4 hours;
and S5, carrying out secondary curing for 2 hours, and airing to obtain the wood fiber board.
Example 3
The preparation method of the flame-retardant wood fiber board comprises the following steps:
s1, sawing the log into small sections with the length of about 30cm, and rotationally cutting the small sections into wood filaments;
s2, extracting chips and dust from the rotary-cut wood filaments through a dust extraction mesh screen, and soaking the wood filaments in a mixed solution of silicate, magnesium oxide and magnesium sulfate for 24 hours;
s3, weighing 4500g of dipped wood wool, 5000g of cement, 150g of silicate, 75g of magnesium oxide and 75g of magnesium sulfate, and uniformly mixing the materials;
s4, spreading the mixed material on a hollow template by a spreading machine, cutting and prepressing the mixed material, and then carrying out primary curing for 3 hours;
and S5, carrying out secondary curing for 1h, and airing to obtain the wood fiber board.
Example 4
The preparation method of the flame-retardant wood fiber board comprises the following steps:
s1, sawing the log into small sections with the length of about 30cm, and rotationally cutting the small sections into wood filaments;
s2, extracting chips and dust from the rotary-cut wood filaments through a dust extraction mesh screen, and soaking the wood filaments in a mixed solution of silicate, magnesium oxide and magnesium sulfate for 24 hours;
s3, weighing 4500g of dipped wood wool, 5000g of cement, 150g of silicate, 150g of magnesium oxide and 150g of magnesium sulfate, and uniformly mixing the materials;
s4, spreading the mixed material on a hollow template by a spreading machine, cutting and pre-pressing the mixed material, and then curing for the first time for 4 hours;
and S5, carrying out secondary curing for 1h, and airing to obtain the wood fiber board.
Example 5
The preparation method of the flame-retardant wood fiber board comprises the following steps:
s1, sawing the log into small sections with the length of about 30cm, and rotationally cutting the small sections into wood filaments;
s2, extracting chips and dust from the rotary-cut wood filaments through a dust extraction mesh screen, and soaking the wood filaments in a mixed solution of silicate, magnesium oxide and magnesium sulfate for 24 hours;
s3, weighing 4500g of dipped wood wool, 5500g of cement, 200g of silicate, 150g of magnesium oxide and 150g of magnesium sulfate, and uniformly mixing the materials;
s4, spreading the mixed material on a hollow template by a spreading machine, cutting and pre-pressing the mixed material, and then curing for the first time for 2 hours;
and S5, carrying out secondary curing for 1h, and airing to obtain the wood fiber board.
A comparison of flame retardant properties was made with the wood fiber board prepared in example 5 and the wood fiber board prepared in application publication No. CN 102653463A.
The test method comprises the following steps: referring to GB8624-2012, the density is 1800kg/m3The fiber cement board with a thickness of 9mm was used as a base board, and the wood fiber board prepared in example 5 and the wood fiber board prepared in application publication No. CN102653463A were fixed to the base board with screws, respectively, to perform a flame retardant property test, wherein the density of two samples was 745.2kg/m3Thickness of 15mm and area of sample of 12m2The test results are shown in Table 2.
TABLE 2
The foregoing detailed description is given by way of example only, to better enable one of ordinary skill in the art to understand the patent, and is not to be construed as limiting the scope of what is encompassed by the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.
Claims (6)
1. The flame-retardant wood fiber board is characterized by comprising the following raw materials: the wood wool cement mortar comprises wood wool, cement, silicate, magnesium oxide and magnesium sulfate, wherein the wood wool accounts for 40-50 parts by weight, the cement accounts for 45-55 parts by weight, the sum of the silicate, the magnesium oxide and the magnesium sulfate accounts for 3-5 parts by weight, the silicate is tricalcium silicate, and the adding proportion of the silicate, the magnesium oxide and the magnesium sulfate is (1-2): 1.
2. The flame retardant wood fiber board of claim 1, wherein the cement is selected from the group consisting of high strength portland cements.
3. A method of making the flame retardant wood fiber board of any one of claims 1-2, comprising the steps of:
s1, rotary cutting the log into wood filaments;
s2, dipping the wood wool prepared in the S1;
s3, weighing the wood wool, cement, silicate, magnesium oxide and magnesium sulfate soaked in the step S2, wherein the wood wool accounts for 40-50 parts by weight, the cement accounts for 45-55 parts by weight, and the sum of the silicate, the magnesium oxide and the magnesium sulfate accounts for 3-5 parts by weight, and mixing the materials;
s4, spreading the mixed materials on an empty template, cutting, prepressing and then carrying out primary curing treatment;
and S5, carrying out secondary curing treatment on the material processed in the step S4, and airing to obtain the flame-retardant wood wool fiberboard.
4. The method for preparing a flame retardant wood fiber board according to claim 3, wherein the solution dipped in S2 is a mixed solution of silicate, magnesium oxide and magnesium sulfate, wherein the ratio of magnesium oxide to magnesium sulfate is 2:1, and silicate accounts for 1-3% of the total mole amount.
5. The method for preparing a flame retardant wood fiber board according to claim 3, wherein the time of the first curing treatment in S4 is 2-4 h.
6. The method for preparing a flame retardant wood fiber board according to claim 3, wherein the time of the second curing treatment in S5 is 1-2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686336.1A CN108341634B (en) | 2017-08-11 | 2017-08-11 | Flame-retardant wood fiber board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686336.1A CN108341634B (en) | 2017-08-11 | 2017-08-11 | Flame-retardant wood fiber board and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108341634A CN108341634A (en) | 2018-07-31 |
| CN108341634B true CN108341634B (en) | 2021-08-17 |
Family
ID=62962407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686336.1A Active CN108341634B (en) | 2017-08-11 | 2017-08-11 | Flame-retardant wood fiber board and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108341634B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653463A (en) * | 2012-03-22 | 2012-09-05 | 无锡泛亚环保科技有限公司 | Wood-wool board and production method thereof |
| CN103043992A (en) * | 2013-01-15 | 2013-04-17 | 刘贵堂 | Flame-retardant and anti-aging insulation building material and preparation method and application thereof |
-
2017
- 2017-08-11 CN CN201710686336.1A patent/CN108341634B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653463A (en) * | 2012-03-22 | 2012-09-05 | 无锡泛亚环保科技有限公司 | Wood-wool board and production method thereof |
| CN103043992A (en) * | 2013-01-15 | 2013-04-17 | 刘贵堂 | Flame-retardant and anti-aging insulation building material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108341634A (en) | 2018-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3175027B1 (en) | Acoustic ceiling tiles with anti-sagging properties and methods of making same | |
| CN107640949B (en) | Magnesium crystal fireproof flame-retardant plate and preparation method thereof | |
| CN101259629B (en) | Wood fire retardant and wood veneer flame-proof processing technique | |
| CN101367658B (en) | Method of manufacturing dampproof flame-proof plaster slab | |
| CN107337419B (en) | Method for manufacturing gypsum board without paper surface | |
| EP3353132B1 (en) | Acoustical ceiling tile | |
| CN107032740B (en) | Bamboo fiber magnesium oxysulfide board and preparation method thereof | |
| CN101747014B (en) | Anti-sagging plasterboard and method for producing same | |
| Yel et al. | Effect of press temperature on some properties of cement bonded particleboard | |
| US20130178126A1 (en) | Microfiber-containing fiber reinforced facer mats and method of making | |
| CN111470811A (en) | Calcium silicate board and preparation method thereof | |
| CN108341634B (en) | Flame-retardant wood fiber board and preparation method thereof | |
| US8852338B2 (en) | Cementitious binders and wood particles-based incombustible coloured composite panel with structural high performance | |
| JP2009132078A (en) | Non-combustible board and manufacturing method of the same | |
| CN102756409A (en) | Method for producing veneer laminated timber with corrosion resistance and flame resistance | |
| KR102610877B1 (en) | Semi-nonflammable board using Kenaf non-woven fabric and manufacturing method thereof | |
| CN101812894B (en) | Environment friendly light-weight composite keel plate | |
| JP2015535522A (en) | Chemical additives for gypsum products | |
| CN110903527A (en) | Polyolefin wood-plastic co-extrusion surface layer composite material | |
| EP1125903B1 (en) | Wood-wool based building elements and process for manufacturing the same | |
| CN116426076A (en) | High-strength fireproof core coiled plate and preparation method thereof | |
| US20200283961A1 (en) | Construction Board | |
| KR102626994B1 (en) | Non-combustible ceramic molded body for lightweight building interior and exterior materials and its manufacturing method | |
| CN114905808A (en) | Paper-surface gypsum board and preparation method thereof | |
| CN109369141B (en) | Raw soil-based magnesium oxysulfate ecological fireproof plate and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |