CN114410164A - Waterproof fiberboard and preparation method thereof - Google Patents
Waterproof fiberboard and preparation method thereof Download PDFInfo
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- CN114410164A CN114410164A CN202210224354.9A CN202210224354A CN114410164A CN 114410164 A CN114410164 A CN 114410164A CN 202210224354 A CN202210224354 A CN 202210224354A CN 114410164 A CN114410164 A CN 114410164A
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- 239000011094 fiberboard Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000000835 fiber Substances 0.000 claims abstract description 45
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 16
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 239000003973 paint Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 53
- 238000000576 coating method Methods 0.000 claims description 53
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000007605 air drying Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 12
- 239000004113 Sepiolite Substances 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000007822 coupling agent Substances 0.000 claims description 11
- 239000002270 dispersing agent Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 229910052624 sepiolite Inorganic materials 0.000 claims description 11
- 235000019355 sepiolite Nutrition 0.000 claims description 11
- 239000002562 thickening agent Substances 0.000 claims description 11
- PMQIWLWDLURJOE-UHFFFAOYSA-N triethoxy(1,1,2,2,3,3,4,4,5,5,6,6,7,7,10,10,10-heptadecafluorodecyl)silane Chemical compound CCO[Si](OCC)(OCC)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCC(F)(F)F PMQIWLWDLURJOE-UHFFFAOYSA-N 0.000 claims description 10
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000005543 nano-size silicon particle Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 abstract description 9
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 238000005054 agglomeration Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229920001223 polyethylene glycol Polymers 0.000 description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000008104 plant cellulose Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a waterproof fiber board and a preparation method thereof, wherein the waterproof fiber board consists of a fiber core board and waterproof paint coated on the periphery of the fiber core board, the surface of silica is subjected to hydrophobic modification treatment, the modified silica is added into organic silicon modified acrylic emulsion, the interface compatibility of the silica and the organic silicon modified acrylic emulsion is increased, the agglomeration of the silica is reduced, the hydrophobic property and the wear-resisting property of the waterproof paint are improved, the waterproof property and the wear-resisting property of the fiber board are further improved, and meanwhile, the space barrier effect is enhanced jointly through the mutual synergistic effect of the silica and montmorillonite, the diffusion of water molecules is retarded, and the waterproof property and the wear-resisting property of the fiber board are further improved.
Description
Technical Field
The invention relates to the technical field of fiberboard preparation, in particular to a waterproof fiberboard and a preparation method thereof.
Background
The fiber board is also called as a density board, and is an artificial board made of wood fibers or other plant cellulose fibers as raw materials and urea formaldehyde resin or other suitable adhesives. The fiberboard has the advantages of uniform material quality, small longitudinal and transverse strength difference, difficult cracking and the like, has wide application, and is an effective way for comprehensively utilizing wood resources in the development of fiberboard production.
At present, the moisture-proof and water-resistant performance of a fiberboard is poor, the fiberboard is easy to warp and deform due to the expansion force difference generated after moisture absorption, cheap and colorless paraffin is often added in the manufacturing process of the fiberboard, the board forming surface is coated or directly added into fiber, and then the fiber is stirred and hot-pressed into a board, however, if the addition amount of the paraffin is too small, the waterproof effect is not obvious, if the addition amount is too large, the bonding performance of the fiberboard is adversely affected, the later-stage use effect is affected, and the application range of the fiberboard is narrowed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a waterproof fiberboard and a preparation method thereof, and solves the technical problem that the existing fiberboard is poor in waterproof performance and wear-resisting performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the waterproof fiberboard is composed of a fiber core board and waterproof paint coated on the periphery of the fiber core board, wherein the waterproof paint is composed of the following raw materials in parts by weight: 40-60 parts of organic silicon modified acrylic emulsion, 10-15 parts of modified silicon dioxide, 8-12 parts of modified montmorillonite, 3-6 parts of sepiolite powder, 1-3 parts of dispersing agent, 1-2 parts of thickening agent, 2-4 parts of film-forming assistant and 10-15 parts of water.
Preferably, the preparation method of the modified silica comprises the following steps: adding nano silicon dioxide into absolute ethyl alcohol, carrying out ultrasonic dispersion uniformly, then adding heptadecafluorodecyltriethoxysilane into the absolute ethyl alcohol, heating and stirring the mixture for reaction, and after the reaction is finished, washing and drying the obtained product to obtain the modified silicon dioxide.
Preferably, the mass ratio of the nano silicon dioxide to the heptadecafluorodecyltriethoxysilane is 4-6: 5-10.
Preferably, the heating reaction temperature is 60-80 ℃, the reaction time is 12-18h, and the stirring speed is 400-800 r/min.
Preferably, the preparation method of the modified montmorillonite comprises the following steps: adding montmorillonite into acetic acid solution, stirring uniformly, then adding titanate coupling agent and dicumyl peroxide for reaction, and after the reaction is finished, filtering, washing and vacuum drying to obtain the modified montmorillonite.
Preferably, the mass ratio of the montmorillonite to the acetic acid solution to the titanate coupling agent to the dicumyl peroxide is 10-20:80-100:4-8: 0.05-0.1.
Preferably, the mass fraction of the acetic acid solution is 20-35%.
Preferably, the reaction temperature is 70-90 ℃ and the reaction time is 1-3 h.
Preferably, the preparation method of the waterproof coating comprises the following steps: adding water, a dispersant, a thickening agent and a film-forming assistant into the organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding modified silicon dioxide, modified montmorillonite and sepiolite powder, and stirring uniformly to obtain the waterproof coating.
The invention also provides a preparation method of the waterproof fiberboard, which comprises the following specific preparation steps: and uniformly coating the prepared waterproof coating on the periphery of the fiber core plate to ensure that all exposed fiber surfaces are covered, and after the coating is finished, placing the fiber core plate for natural air drying to obtain the waterproof fiber plate.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the surface hydrophobic modification treatment is carried out on the silicon dioxide, and the modified silicon dioxide is added into the organic silicon modified acrylic emulsion, so that the interface compatibility of the silicon dioxide and the organic silicon modified acrylic emulsion is increased, the agglomeration of the silicon dioxide is reduced, the hydrophobic property and the wear resistance of the waterproof coating are improved, and the waterproof property and the wear resistance of the fiber board are further improved.
(2) According to the invention, the calcium ions and the sodium ions in the montmorillonite are exchanged by acetic acid to form pore channels, so that the montmorillonite has a porous structure, and then the titanate coupling agent is used for modification, so that the affinity of the montmorillonite is improved, the montmorillonite can be better dispersed in the organosilicon modified acrylic emulsion, the modified montmorillonite and the organosilicon modified acrylic emulsion form a protective film structure, water molecules can be effectively prevented from entering, meanwhile, the modified silica is filled between the layered structures of the montmorillonite, and the silica and the montmorillonite are mutually synergistic, so that the space barrier effect is jointly enhanced, the diffusion of the water molecules is retarded, and the waterproof performance and the wear resistance of the fiber board are further improved.
Detailed Description
The present invention will be described in more detail with reference to specific preferred embodiments, but the present invention is not limited to the following embodiments.
It should be noted that, unless otherwise specified, the chemical reagents involved in the present invention are commercially available.
The fiber core board used in the embodiment is a bamboo-wood fiber board which is purchased from the novel heat-insulating material company Limited in Shandong Runyi; the organosilicon modified acrylic emulsion is WC-SA108, and is purchased from En chemical industry Co., Ltd, Anhui; silicon dioxide was purchased from Shanghai Huizi sub-nanometer New materials, Inc.; the titanate coupling agent is HY-207 available from Jeccard chemical Co., Ltd; heptadecafluorodecyltriethoxysilane is available from Jeccard chemical Co., Ltd, Hangzhou.
Example 1
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparation of modified silica: adding 4g of nano silicon dioxide into 100mL of absolute ethyl alcohol, uniformly dispersing by ultrasonic, then adding 5g of heptadecafluorodecyltriethoxysilane, stirring and reacting for 12 hours at the temperature of 60 ℃ and at the speed of 800r/min, and after the reaction is finished, washing and drying the obtained product to obtain modified silicon dioxide;
(2) preparing modified montmorillonite: adding 10g of montmorillonite into 100g of 20 wt% acetic acid solution, stirring uniformly, adding 4g of titanate coupling agent HY-207 and 0.05g of dicumyl peroxide, reacting at 80 ℃ for 2h, and after the reaction is finished, filtering, washing and vacuum drying to obtain modified montmorillonite;
(3) preparing a waterproof coating: adding 10g of water, 1g of dispersant fatty alcohol-polyoxyethylene ether, 1g of thickener TT-60 and 2g of film-forming aid polyethylene glycol into 40g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 10g of modified silicon dioxide, 8g of modified montmorillonite and 3g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(4) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Example 2
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparation of modified silica: adding 6g of nano silicon dioxide into 100mL of absolute ethyl alcohol, uniformly dispersing by ultrasonic, then adding 8g of heptadecafluorodecyltriethoxysilane, stirring and reacting for 15h at 80 ℃ at 800r/min, and after the reaction is finished, washing and drying the obtained product to obtain modified silicon dioxide;
(2) preparing modified montmorillonite: adding 15g of montmorillonite into 100g of 20 wt% acetic acid solution, stirring uniformly, adding 6g of titanate coupling agent HY-207 and 0.08g of dicumyl peroxide, reacting at 80 ℃ for 2h, and after the reaction is finished, filtering, washing and vacuum drying to obtain modified montmorillonite;
(3) preparing a waterproof coating: adding 15g of water, 2g of dispersing agent fatty alcohol-polyoxyethylene ether, 1g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 50g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 12g of modified silicon dioxide, 10g of modified montmorillonite and 4g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(4) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Example 3
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparation of modified silica: adding 5g of nano silicon dioxide into 100mL of absolute ethyl alcohol, uniformly dispersing by ultrasonic, then adding 10g of heptadecafluorodecyltriethoxysilane, stirring and reacting for 16h at 70 ℃ at 600r/min, and after the reaction is finished, washing and drying the obtained product to obtain modified silicon dioxide;
(2) preparing modified montmorillonite: adding 18g of montmorillonite into 100g of 25 wt% acetic acid solution, stirring uniformly, then adding 8g of titanate coupling agent HY-207 and 0.08g of dicumyl peroxide, reacting for 2 hours at 80 ℃, and after the reaction is finished, filtering, washing and vacuum drying to obtain modified montmorillonite;
(3) preparing a waterproof coating: adding 12g of water, 3g of dispersing agent fatty alcohol-polyoxyethylene ether, 1g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 60g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 15g of modified silicon dioxide, 10g of modified montmorillonite and 5g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(4) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Example 4
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparation of modified silica: adding 6g of nano silicon dioxide into 100mL of absolute ethyl alcohol, uniformly dispersing by ultrasonic, then adding 8g of heptadecafluorodecyltriethoxysilane, stirring and reacting for 16h at 80 ℃ at 500r/min, and after the reaction is finished, washing and drying the obtained product to obtain modified silicon dioxide;
(2) preparing modified montmorillonite: adding 15g of montmorillonite into 100g of 25 wt% acetic acid solution, stirring uniformly, adding 7g of titanate coupling agent HY-207 and 0.1g of dicumyl peroxide, reacting at 80 ℃ for 2h, and after the reaction is finished, filtering, washing and vacuum drying to obtain modified montmorillonite;
(3) preparing a waterproof coating: adding 15g of water, 3g of dispersing agent fatty alcohol-polyoxyethylene ether, 2g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 50g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 12g of modified silicon dioxide, 10g of modified montmorillonite and 4g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(4) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Comparative example 1
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparing modified montmorillonite: adding 15g of montmorillonite into 100g of 20 wt% acetic acid solution, stirring uniformly, adding 6g of titanate coupling agent HY-207 and 0.08g of dicumyl peroxide, reacting at 80 ℃ for 2h, and after the reaction is finished, filtering, washing and vacuum drying to obtain modified montmorillonite;
(2) preparing a waterproof coating: adding 15g of water, 2g of dispersing agent fatty alcohol-polyoxyethylene ether, 1g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 50g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 10g of modified montmorillonite and 4g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(3) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Comparative example 2
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparation of modified silica: adding 6g of nano silicon dioxide into 100mL of absolute ethyl alcohol, uniformly dispersing by ultrasonic, then adding 8g of heptadecafluorodecyltriethoxysilane, stirring and reacting for 15h at 80 ℃ at 800r/min, and after the reaction is finished, washing and drying the obtained product to obtain modified silicon dioxide;
(2) preparing a waterproof coating: adding 15g of water, 2g of dispersing agent fatty alcohol-polyoxyethylene ether, 1g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 50g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 12g of modified silicon dioxide and 4g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(3) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
Comparative example 3
A preparation method of a waterproof fiberboard comprises the following steps:
(1) preparing a waterproof coating: adding 15g of water, 2g of dispersing agent fatty alcohol-polyoxyethylene ether, 1g of thickening agent TT-60 and 3g of film-forming aid polyethylene glycol into 50g of organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding 4g of sepiolite powder, and stirring uniformly to obtain the waterproof coating;
(2) preparing a waterproof fiberboard: and uniformly coating the prepared waterproof coating on the periphery of the fiber core board to ensure that all exposed fiber surfaces are covered, and after coating is finished, placing the fiber core board for natural air drying to obtain the waterproof fiber board, wherein the thickness of the fiber core board is 12mm, and the thickness of the waterproof coating after air drying is 0.8 mm.
The fiber boards prepared in examples 1 to 4 and comparative examples 1 to 3 were subjected to a performance test, which was as follows:
water absorption thickness expansion rate: the measurement is carried out according to the standard of GB/T17657-2013 physicochemical property test method for artificial boards and decorative artificial boards;
and (3) hardness testing: measuring according to GB/T6739-2006 standard;
the test results are shown in the following table:
| contact angle (°) | Water absorption thickness expansion ratio (%) | Hardness of | |
| Example 1 | 125 | 3.1 | 8H |
| Example 2 | 126 | 2.7 | 9H |
| Example 3 | 124 | 2.4 | 9H |
| Example 4 | 125 | 3.0 | 8H |
| Comparative example 1 | 118 | 7.5 | 6H |
| Comparative example 2 | 117 | 6.9 | 7H |
| Comparative example 3 | 109 | 18.2 | 4H |
As can be seen from the table, the fiberboard prepared by the embodiment of the present invention has good waterproof performance and excellent wear resistance.
Finally, it is to be noted that: the above examples do not limit the invention in any way. It will be apparent to those skilled in the art that various modifications and improvements can be made to the present invention. Accordingly, any modification or improvement made without departing from the spirit of the present invention is within the scope of the claimed invention.
Claims (10)
1. The waterproof fiberboard is characterized by comprising a fiber core board and waterproof paint coated on the periphery of the fiber core board, wherein the waterproof paint comprises the following raw materials in parts by weight: 40-60 parts of organic silicon modified acrylic emulsion, 10-15 parts of modified silicon dioxide, 8-12 parts of modified montmorillonite, 3-6 parts of sepiolite powder, 1-3 parts of dispersing agent, 1-2 parts of thickening agent, 2-4 parts of film-forming assistant and 10-15 parts of water.
2. The waterproof fiberboard of claim 1, wherein the preparation method of the modified silica comprises the following steps: adding nano silicon dioxide into absolute ethyl alcohol, carrying out ultrasonic dispersion uniformly, then adding heptadecafluorodecyltriethoxysilane into the absolute ethyl alcohol, heating and stirring the mixture for reaction, and after the reaction is finished, washing and drying the obtained product to obtain the modified silicon dioxide.
3. The waterproof fiberboard of claim 2, wherein the mass ratio of the nanosilica to the heptadecafluorodecyltriethoxysilane is 4-6: 5-10.
4. The waterproof fiberboard of claim 2, wherein the heating reaction temperature is 60-80 ℃, the reaction time is 12-18h, and the stirring speed is 400-800 r/min.
5. The waterproof fiberboard of claim 1, wherein the preparation method of the modified montmorillonite comprises the following steps: adding montmorillonite into acetic acid solution, stirring uniformly, then adding titanate coupling agent and dicumyl peroxide for reaction, and after the reaction is finished, filtering, washing and vacuum drying to obtain the modified montmorillonite.
6. The waterproof fiberboard of claim 5, wherein the mass ratio of the montmorillonite to the acetic acid solution to the titanate coupling agent to the dicumyl peroxide is 10-20:80-100:4-8: 0.05-0.1.
7. The waterproof fiberboard of claim 5, wherein the acetic acid solution is 20-35% by mass.
8. The waterproof fiberboard of claim 5, wherein the reaction temperature is 70-90 ℃ and the reaction time is 1-3 hours.
9. The waterproof fiberboard of claim 1, wherein the preparation method of the waterproof coating comprises the following steps: adding water, a dispersant, a thickening agent and a film-forming assistant into the organic silicon modified acrylic emulsion, stirring and mixing uniformly, then adding modified silicon dioxide, modified montmorillonite and sepiolite powder, and stirring uniformly to obtain the waterproof coating.
10. A method for preparing the waterproof fiberboard of any one of claims 1 to 9, which comprises the following specific steps: and uniformly coating the prepared waterproof coating on the periphery of the fiber core plate to ensure that all exposed fiber surfaces are covered, and after the coating is finished, placing the fiber core plate for natural air drying to obtain the waterproof fiber plate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773121A (en) * | 2022-05-25 | 2022-07-22 | 云南天腾化工有限公司 | Anti-caking agent for nitro compound fertilizer and preparation method and application thereof |
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| CN1441015A (en) * | 2003-03-26 | 2003-09-10 | 武汉理工大学 | Nano modified polymer-based roof waterproof paint and its production process |
| CN101230210A (en) * | 2007-12-28 | 2008-07-30 | 河北工业大学 | Preparation method of organically modified silicate mineral clay |
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2022
- 2022-03-09 CN CN202210224354.9A patent/CN114410164A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441015A (en) * | 2003-03-26 | 2003-09-10 | 武汉理工大学 | Nano modified polymer-based roof waterproof paint and its production process |
| CN101230210A (en) * | 2007-12-28 | 2008-07-30 | 河北工业大学 | Preparation method of organically modified silicate mineral clay |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773121A (en) * | 2022-05-25 | 2022-07-22 | 云南天腾化工有限公司 | Anti-caking agent for nitro compound fertilizer and preparation method and application thereof |
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