CN112980209B - Antibacterial and mildew-proof wood veneer and preparation method thereof - Google Patents
Antibacterial and mildew-proof wood veneer and preparation method thereof Download PDFInfo
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- CN112980209B CN112980209B CN202110462857.5A CN202110462857A CN112980209B CN 112980209 B CN112980209 B CN 112980209B CN 202110462857 A CN202110462857 A CN 202110462857A CN 112980209 B CN112980209 B CN 112980209B
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- 239000002023 wood Substances 0.000 title claims abstract description 57
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 56
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003063 flame retardant Substances 0.000 claims abstract description 34
- 229920001661 Chitosan Polymers 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 32
- 150000004699 copper complex Chemical class 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 21
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006084 composite stabilizer Substances 0.000 claims abstract description 20
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 19
- 230000003385 bacteriostatic effect Effects 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 66
- 238000003756 stirring Methods 0.000 claims description 43
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- 244000198134 Agave sisalana Species 0.000 claims description 29
- 241000196324 Embryophyta Species 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 19
- 238000007731 hot pressing Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 claims description 11
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 claims description 11
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical group [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 10
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 10
- 229920001038 ethylene copolymer Polymers 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 8
- 239000011256 inorganic filler Substances 0.000 claims description 4
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 2
- 240000008564 Boehmeria nivea Species 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 2
- 240000000491 Corchorus aestuans Species 0.000 claims description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 2
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 240000000907 Musa textilis Species 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 2
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 2
- 229910052599 brucite Inorganic materials 0.000 claims description 2
- 235000009120 camo Nutrition 0.000 claims description 2
- 235000005607 chanvre indien Nutrition 0.000 claims description 2
- 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 description 2
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 2
- 239000011487 hemp Substances 0.000 claims description 2
- 229960001545 hydrotalcite Drugs 0.000 claims description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 2
- 239000011120 plywood Substances 0.000 claims description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 7
- 235000013312 flour Nutrition 0.000 abstract description 2
- 241000219000 Populus Species 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000523 sample Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012796 inorganic flame retardant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000209128 Bambusa Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000032683 aging 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
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the field of building materials, in particular to a bacteriostatic and mildewproof wood veneer and a preparation method thereof, wherein the bacteriostatic and mildewproof wood veneer comprises the following raw materials: the wood veneer prepared from the wood flour, the flame-retardant adhesive, the calcium-zinc composite stabilizer and the plant reinforced fiber loaded chitosan copper complex and the paraffin oil has excellent mechanical properties, has good mildew-proof, antibacterial and flame-retardant properties, and can be widely used as a building material.
Description
Technical Field
The invention relates to the field of building materials, in particular to a bacteriostatic and mildewproof wood veneer and a preparation method thereof.
Background
The wood-based plywood is an artificial board which is made by processing wood chips, paper pulp fibers, peanut shells, bamboos, straws and the like serving as fillers through a board pressing machine. The method can recycle the waste and improve the utilization rate of the wood. However, when the wood-plastic board is used, if the environmental humidity is too high, the wood-plastic board may mildew, which affects the beauty and the use feeling, in addition, the adhesive used in the wood-plastic board is generally organic, the wood itself is flammable, if the wood-plastic board meets open fire, the fire hazard is generated, and the wood-plastic board is an obstacle to the wide use of the wood-plastic board as the building material.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the technical problems, the invention provides a bacteriostatic and mildewproof wood veneer and a preparation method thereof.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
an antibacterial and mildew-proof wood veneer is composed of the following raw materials:
wood flour, a flame-retardant adhesive, a calcium-zinc composite stabilizer, a plant reinforced fiber loaded chitosan copper complex and paraffin oil.
Preferably, the feed consists of the following raw materials in parts by weight:
70-100 parts of wood powder, 15-20 parts of flame-retardant adhesive, 0.1-1 part of calcium-zinc composite stabilizer, 20-30 parts of plant reinforced fiber loaded chitosan copper complex and 1-2 parts of paraffin oil.
Preferably, the flame-retardant adhesive is prepared from the following raw materials:
vinyl acetate-ethylene copolymer emulsion, phosphated polyvinyl alcohol, MDI curing agent and inorganic filler.
Preferably, the flame-retardant adhesive is prepared from the following raw materials in parts by weight:
18-22 parts of vinyl acetate-ethylene copolymer emulsion, 40-50 parts of phosphated polyvinyl alcohol, 1-2 parts of MDI curing agent and 4-8 parts of inorganic flame-retardant filler.
Preferably, the inorganic flame-retardant filler is any one or combination of more of brucite, hydrotalcite, montmorillonite, aluminum hydroxide, magnesium hydroxide, red phosphorus, microcapsule red phosphorus, ammonium polyphosphate, zinc borate and antimony oxide.
Preferably, the preparation method of the plant reinforcing fiber loaded chitosan copper complex is as follows:
s1: adding chitosan oligosaccharide into acetic acid solution, stirring for dissolving, adding copper acetate solution, heating to 40-50 deg.C, stirring for reacting for 5-8h to obtain reaction solution A;
s2: adding plant-based reinforced fiber with length of 10-15mm into KH-550 methanol solution, performing ultrasonic oscillation treatment at 30-40 deg.C for 10-30min, filtering, drying the solid, adding into reaction solution A, and stirring for 10-30min to obtain reaction solution B;
s3: cooling to 5-10 deg.C, adjusting pH of reaction solution B to 9-10 with pH regulator, stirring for 10-15 hr to separate out and attach the complex on plant reinforced fiber, filtering, washing the solid with water, and drying.
Preferably, the mass concentration of the acetic acid solution is 1-3%;
the mass concentration of the copper acetate solution is 5-10%;
the mass concentration of the KH-550 methanol solution is 0.25-1%.
Preferably, the plant-based reinforcing fiber is any one of sisal fiber, ramie fiber, hemp fiber, flax fiber, abaca fiber and jute fiber.
Preferably, the pH regulator is tetraethylammonium hydroxide aqueous solution, and the mass concentration of the tetraethylammonium hydroxide aqueous solution is 20-40%.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing wood powder, a calcium-zinc composite stabilizer, a plant reinforced fiber loaded chitosan copper complex and paraffin oil, adding a flame-retardant adhesive, stirring for 20-50min, adding into a mold, paving, prepressing, hot-pressing, cooling to room temperature, demolding, and maintaining at room temperature in a dark place;
wherein the prepressing temperature is 110-130 ℃, the pressure is 3-5MPa, the prepressing time is 3-5s, the hot pressing temperature is 140-150 ℃, the pressure is 8-10MPa, the hot pressing time is 6-8s, and the cooling speed is 5-10 ℃/min.
The invention has the beneficial effects that:
the chitosan oligosaccharide has antibacterial property, has higher activity compared with high-molecular chitosan, and copper as an inorganic antibacterial material has the advantages of wide antibacterial range, long lasting sterilization, difficult generation of drug resistance, high safety and the like The wood veneer has the advantages that the wood veneer is excellent in mechanical property through testing, and has good mildew-proof, bacteriostatic and flame-retardant properties, so that the wood veneer can be widely used as a building material.
Detailed Description
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
80 parts of poplar wood powder, 15 parts of flame-retardant adhesive, 0.5 part of calcium-zinc composite stabilizer, 30 parts of sisal fiber loaded chitosan copper complex and 1 part of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
20 parts of vinyl acetate-ethylene copolymer emulsion, 50 parts of phosphated polyvinyl alcohol, 1 part of MDI curing agent and 5 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into 1% acetic acid solution, stirring for dissolving, adding 5% copper acetate solution, heating to 50 deg.C, stirring for reacting for 8h to obtain reaction solution A, adding 10mm sisal fiber into 0.5% KH-550 methanol solution, performing ultrasonic oscillation treatment at 40 deg.C for 20min, filtering, drying the solid, adding into reaction solution A, stirring for 20min to obtain reaction solution B, cooling to 10 deg.C, adjusting pH of reaction solution B to 9 with 40% tetraethylammonium hydroxide aqueous solution, stirring for 12h to separate out and attach the complex on sisal fiber, filtering, washing the solid with water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 40min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 120 ℃ under the pressure of 3MPa for 5s, hot-pressing at the hot-pressing temperature of 140 ℃ under the pressure of 8MPa for 8s, cooling to room temperature at the speed of 5 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Example 2:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
70 parts of poplar wood powder, 15 parts of flame-retardant adhesive, 0.1 part of calcium-zinc composite stabilizer, 20 parts of sisal fiber loaded chitosan copper complex and 1 part of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
18 parts of vinyl acetate-ethylene copolymer emulsion, 40 parts of phosphated polyvinyl alcohol, 1 part of MDI curing agent and 4 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into 1% acetic acid solution, stirring for dissolving, adding 5% copper acetate solution, heating to 40 deg.C, stirring for reacting for 5h to obtain reaction solution A, adding 10mm sisal fiber into 0.25% KH-550 methanol solution, performing ultrasonic oscillation treatment at 30 deg.C for 10min, filtering, drying the solid, adding into reaction solution A, stirring for 10min while maintaining the temperature to obtain reaction solution B, cooling to 5 deg.C, adjusting pH of reaction solution B to 9 with 20% tetraethylammonium hydroxide aqueous solution, stirring for 10h to separate out and attach the complex on sisal fiber, filtering, washing the solid with water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 20min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 110 ℃ under the pressure of 3MPa for 3s, hot-pressing at the hot-pressing temperature of 140 ℃ under the pressure of 8MPa for 6s, cooling to room temperature at the speed of 5 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Example 3:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
100 parts of poplar wood powder, 20 parts of flame-retardant adhesive, 1 part of calcium-zinc composite stabilizer, 30 parts of sisal fiber loaded chitosan copper complex and 2 parts of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
22 parts of vinyl acetate-ethylene copolymer emulsion, 50 parts of phosphated polyvinyl alcohol, 2 parts of MDI curing agent and 8 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into an acetic acid solution with the mass concentration of 3%, stirring and dissolving, then adding a copper acetate solution with the mass concentration of 10%, heating to 50 ℃, stirring and reacting for 8 hours to obtain a reaction solution A, adding sisal fibers with the length of 15mm into a methanol solution with the mass concentration of 1% KH-550, carrying out ultrasonic oscillation treatment at 40 ℃ for 30 minutes, filtering, drying solids, then adding the solids into the reaction solution A, carrying out heat preservation and stirring for 30 minutes to obtain a reaction solution B, cooling to 10 ℃, then adjusting the pH of the reaction solution B to 10 by using a tetraethylammonium hydroxide aqueous solution with the mass concentration of 40%, stirring for 15 hours to separate out and attach the generated complex on the sisal fibers, filtering, washing the solid with water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 50min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 130 ℃, the pressure of 5MPa, the prepressing time of 5s, hot-pressing at the hot-pressing temperature of 150 ℃, the pressure of 10MPa and the hot-pressing time of 8s, cooling to room temperature at the speed of 10 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Example 4:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
70 parts of poplar wood powder, 20 parts of flame-retardant adhesive, 0.1 part of calcium-zinc composite stabilizer, 30 parts of sisal fiber loaded chitosan copper complex and 1 part of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
22 parts of vinyl acetate-ethylene copolymer emulsion, 40 parts of phosphated polyvinyl alcohol, 2 parts of MDI curing agent and 4 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into 3% acetic acid solution, stirring for dissolving, adding 5% copper acetate solution, heating to 50 deg.C, stirring for reaction for 5h to obtain reaction solution A, adding 15mm sisal fiber into 0.25% KH-550 methanol solution, performing ultrasonic oscillation treatment at 40 deg.C for 10min, filtering, drying the solid, adding into reaction solution A, stirring for 30min to obtain reaction solution B, cooling to 5 deg.C, adjusting pH to 9 with 40% tetraethylammonium hydroxide aqueous solution, stirring for 15h to separate out and attach the complex on sisal fiber, filtering, washing the solid with water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 20min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 130 ℃ under the pressure of 3MPa for 5s, hot-pressing at the hot-pressing temperature of 140 ℃ under the pressure of 10MPa for 6s, cooling to room temperature at the speed of 10 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Example 5:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
100 parts of poplar wood powder, 15 parts of flame-retardant adhesive, 1 part of calcium-zinc composite stabilizer, 20 parts of sisal fiber loaded chitosan copper complex and 2 parts of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
18 parts of vinyl acetate-ethylene copolymer emulsion, 50 parts of phosphated polyvinyl alcohol, 1 part of MDI curing agent and 8 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into 2.5% acetic acid solution, stirring for dissolving, adding 8% copper acetate solution, heating to 50 deg.C, stirring for reacting for 5h to obtain reaction solution A, adding 10mm sisal fiber into 1% KH-550 methanol solution, performing ultrasonic oscillation treatment at 30 deg.C for 30min, filtering, drying the solid, adding into reaction solution A, stirring for 10min to obtain reaction solution B, cooling to 10 deg.C, adjusting pH of reaction solution B to 10 with 25% tetraethylammonium hydroxide aqueous solution, stirring for 15h to separate out and attach the complex on sisal fiber, filtering, washing the solid with water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 20min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 120 ℃ under the pressure of 5MPa for 3s, hot-pressing at the hot-pressing temperature of 140 ℃ under the pressure of 10MPa for 6s, cooling to room temperature at the speed of 5 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Example 6:
the antibacterial and mildew-proof wood veneer is composed of the following raw materials in parts by weight:
90 parts of poplar wood powder, 20 parts of flame-retardant adhesive, 0.5 part of calcium-zinc composite stabilizer, 20 parts of sisal fiber loaded chitosan copper complex and 1 part of paraffin oil.
The flame-retardant adhesive is prepared from the following raw materials in parts by weight:
20 parts of vinyl acetate-ethylene copolymer emulsion, 40 parts of phosphated polyvinyl alcohol, 1 part of MDI curing agent and 4 parts of magnesium hydroxide.
The preparation method of the plant reinforced fiber loaded chitosan copper complex comprises the following steps:
adding chitosan oligosaccharide into an acetic acid solution with the mass concentration of 2%, stirring and dissolving, then adding a copper acetate solution with the mass concentration of 5%, heating to 50 ℃, stirring and reacting for 5 hours to obtain a reaction solution A, adding sisal fibers with the length of 12mm into a methanol solution with the mass concentration of 1% KH-550, carrying out ultrasonic oscillation treatment for 15 minutes at the temperature of 30 ℃, filtering, drying solids, then adding the solids into the reaction solution A, carrying out heat preservation and stirring for 10 minutes to obtain a reaction solution B, cooling to 10 ℃, then adjusting the pH of the reaction solution B to 10 by using a tetraethylammonium hydroxide aqueous solution with the mass concentration of 20%, stirring for 10 hours to separate out and attach the generated complex on the sisal fibers, filtering, washing solid water, and drying.
The preparation method of the antibacterial and mildewproof wood veneer comprises the following steps:
uniformly mixing the poplar wood powder, the calcium-zinc composite stabilizer, the sisal fiber loaded chitosan copper complex and the paraffin oil, adding the flame-retardant adhesive, stirring for 50min, adding the mixture into a mold, paving and prepressing at the prepressing temperature of 110 ℃ under the pressure of 3MPa for 5s, hot-pressing at the hot-pressing temperature of 140 ℃ under the pressure of 10MPa for 8s, cooling to room temperature at the speed of 5 ℃/min, demolding, and maintaining at the room temperature in a dark place.
Comparative example 1:
comparative example 1 is substantially the same as example 1 except that chitosan copper complex was supported without adding sisal fibers.
Comparative example 2:
comparative example 2 is substantially the same as example 1 except that the sisal fiber-supported chitosan copper complex is replaced with sisal fiber, chitosan copper complex;
the preparation method of the chitosan copper complex comprises the following steps:
adding chitosan oligomer into 1% acetic acid solution, stirring for dissolving, adding 5% copper acetate solution, heating to 50 ℃, stirring for reacting for 8 hours to obtain reaction liquid A, cooling to 10 ℃, adjusting the pH of the reaction liquid A to 9 by using 40% tetraethylammonium hydroxide aqueous solution, stirring for 12 hours, filtering, collecting precipitated solid, and washing with water and drying.
Comparative example 3:
comparative example 3 is substantially the same as example 1 except that the calcium-zinc composite stabilizer is not added.
Comparative example 4:
comparative example 4 is substantially the same as example 1 except that a urea-formaldehyde resin adhesive is used instead of the flame-retardant adhesive.
And (3) performance testing:
the wood veneer prepared in the examples 1 to 6 and the comparative examples 1 to 4 of the invention are used for preparing samples required by the test on a universal sampling machine and are respectively tested, and the specific test method comprises the following steps:
the tensile property is specified in national standard GB/T1040.1-2006, the tensile speed is 2mm/s, and the tensile strength of the sample is measured at room temperature.
Secondly, the bending performance test is carried out according to the regulation of national standard GB/T1040.1-2006, an electronic universal material tester is used for measuring the bending strength and the bending modulus of the test sample at room temperature at the bending speed of 5mm/min, the fixed deflection is 15mm, and the span is 64 mm.
And thirdly, impact performance testing adopts a notch sample according to the GB/T1043.1-2008 regulation, the sample is subjected to aging treatment for 48 hours, and the impact strength of the sample is measured by using a cantilever beam impact tester.
And fourthly, performing a mildew-proof test according to GB/T18261-2000 test method for preventing and controlling wood mildew and blue-stain bacteria by using the mildew-proof agent, inoculating and culturing the sample for 4 weeks, visually observing and calculating the infected area and the damaged value of the sample, grading the damaged value according to the table 1, and calculating the preventing and controlling effect of the agent on the mildew as shown in the formula (1).
Table 1:
e ═ 100% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - (1- (D1/D0) ], production of a polymer having a structure represented by the formula (1)
In the formula (1), E represents the control efficacy, D1 represents the average damage value of the drug-treated sample, and D0 represents the average damage value of the untreated control sample.
Testing the sample by adopting an automatic oxygen index tester according to GB/T2406.2-2009 'combustion behavior determination by oxygen index method for plastics';
the flame retardant rating of the wood-plastic plate is determined according to GB8624-1997 building material combustion performance grading method.
The results of the above tests are shown in table 2 below:
table 2:
as can be seen from the above table 2, the wood veneer prepared by the method has excellent mechanical properties, has good mildew-proof, antibacterial and flame-retardant properties, and can be widely used as a building material.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The antibacterial and mildew-proof wood veneer is characterized by comprising the following raw materials:
wood powder, a flame-retardant adhesive, a calcium-zinc composite stabilizer, a plant reinforced fiber loaded chitosan copper complex and paraffin oil;
the flame-retardant adhesive is prepared from the following raw materials:
vinyl acetate-ethylene copolymer emulsion, phosphated polyvinyl alcohol, MDI curing agent and inorganic filler;
the preparation method of the plant reinforcing fiber loaded chitosan copper complex comprises the following steps:
s1: adding chitosan oligosaccharide into acetic acid solution, stirring for dissolving, adding copper acetate solution, heating to 40-50 deg.C, stirring for reacting for 5-8h to obtain reaction solution A;
s2: adding plant-based reinforced fiber with length of 10-15mm into KH-550 methanol solution, performing ultrasonic oscillation treatment at 30-40 deg.C for 10-30min, filtering, drying the solid, adding into reaction solution A, and stirring for 10-30min to obtain reaction solution B;
s3: cooling to 5-10 deg.C, adjusting pH of reaction solution B to 9-10 with pH regulator, stirring for 10-15 hr to separate out and attach the complex on plant reinforced fiber, filtering, washing the solid with water, and drying.
2. The bacteriostatic and mildewproof wood veneer as claimed in claim 1, which is prepared from the following raw materials in parts by weight:
70-100 parts of wood powder, 15-20 parts of flame-retardant adhesive, 0.1-1 part of calcium-zinc composite stabilizer, 20-30 parts of plant reinforced fiber loaded chitosan copper complex and 1-2 parts of paraffin oil.
3. The bacteriostatic and mildewproof wood-based board according to claim 1, wherein the flame-retardant adhesive is prepared from the following raw materials in parts by weight:
18-22 parts of vinyl acetate-ethylene copolymer emulsion, 40-50 parts of phosphated polyvinyl alcohol, 1-2 parts of MDI curing agent and 4-8 parts of inorganic filler.
4. The bacteriostatic and mildewproof wood-based plywood as claimed in claim 1, wherein the inorganic filler is any one or more of brucite, hydrotalcite, montmorillonite, aluminum hydroxide, magnesium hydroxide, red phosphorus, ammonium polyphosphate, zinc borate and antimony oxide.
5. The bacteriostatic and mildewproof wood veneer as claimed in claim 1, wherein the mass concentration of the acetic acid solution is 1-3%;
the mass concentration of the copper acetate solution is 5-10%;
the mass concentration of the KH-550 methanol solution is 0.25-1%.
6. The bacteriostatic and mildewproof wood-glue board according to claim 1, wherein the plant-based reinforcing fiber is any one of sisal fiber, ramie fiber, hemp fiber, flax fiber, abaca fiber and jute fiber.
7. The bacteriostatic and mildewproof wood-based veneer according to claim 1, wherein the pH regulator is tetraethylammonium hydroxide aqueous solution, and the mass concentration of the tetraethylammonium hydroxide aqueous solution is 20-40%.
8. The preparation method of the bacteriostatic and mildewproof wood veneer as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps of:
uniformly mixing wood powder, a calcium-zinc composite stabilizer, a plant reinforced fiber loaded chitosan copper complex and paraffin oil, adding a flame-retardant adhesive, stirring for 20-50min, adding into a mold, paving, prepressing, hot-pressing, cooling to room temperature, demolding, and maintaining at room temperature in a dark place;
wherein the prepressing temperature is 110-130 ℃, the pressure is 3-5MPa, the prepressing time is 3-5s, the hot pressing temperature is 140-150 ℃, the pressure is 8-10MPa, the hot pressing time is 6-8s, and the cooling speed is 5-10 ℃/min.
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