CN111849054A - Antibiotic mould proof bamboo wood fibre integrated wallboard - Google Patents
Antibiotic mould proof bamboo wood fibre integrated wallboard Download PDFInfo
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- CN111849054A CN111849054A CN202010772125.1A CN202010772125A CN111849054A CN 111849054 A CN111849054 A CN 111849054A CN 202010772125 A CN202010772125 A CN 202010772125A CN 111849054 A CN111849054 A CN 111849054A
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- antibacterial
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- bamboo
- fiber
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 79
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 79
- 241001330002 Bambuseae Species 0.000 title claims abstract description 79
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 79
- 239000011425 bamboo Substances 0.000 title claims abstract description 79
- 229920002522 Wood fibre Polymers 0.000 title claims abstract description 22
- 230000003115 biocidal effect Effects 0.000 title description 2
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 95
- 239000000835 fiber Substances 0.000 claims abstract description 81
- 239000002023 wood Substances 0.000 claims abstract description 73
- 239000000843 powder Substances 0.000 claims abstract description 44
- 235000013312 flour Nutrition 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 23
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 22
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 22
- 239000002025 wood fiber Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 14
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000003607 modifier Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 11
- YOCIJWAHRAJQFT-UHFFFAOYSA-N 2-bromo-2-methylpropanoyl bromide Chemical compound CC(C)(Br)C(Br)=O YOCIJWAHRAJQFT-UHFFFAOYSA-N 0.000 claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 9
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 7
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 7
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 7
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 7
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 6
- 229910021589 Copper(I) bromide Inorganic materials 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
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- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
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- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 6
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- 238000012360 testing method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- ICNCZFQYZKPYMS-UHFFFAOYSA-N 2-methylpropanoyl bromide Chemical compound CC(C)C(Br)=O ICNCZFQYZKPYMS-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229920001600 hydrophobic polymer Polymers 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000012719 thermal polymerization Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010559 graft polymerization reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 modified magnesium oxysulfate Chemical class 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H8/00—Macromolecular compounds derived from lignocellulosic materials
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic System
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/30—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with oxides of halogens, oxyacids of halogens or their salts, e.g. with perchlorates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
- D06M13/21—Halogenated carboxylic acids; Anhydrides, halides or salts thereof
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/332—Di- or polyamines
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/419—Amides having nitrogen atoms of amide groups substituted by hydroxyalkyl or by etherified or esterified hydroxyalkyl groups
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
Abstract
The invention discloses an antibacterial and mildewproof bamboo and wood fiber integrated wallboard which comprises the following raw materials in parts by weight: 50-60 parts of high-density polyethylene, 45-55 parts of pre-modified wood powder, 8-12 parts of antibacterial bamboo fiber, 4-6 parts of filler, 1-2 parts of coupling agent, 0.8-1 part of antioxidant and 1.2-1.5 parts of lubricant. The wood-plastic composite material obtained by using the wood powder and the high-density polyethylene as the raw materials of the wallboard has outstanding advantages in the aspects of wear resistance, environmental protection, recycling, corrosion resistance and the like; in addition, after the wood flour is modified, the interface effect of the wood flour and the high-density polyethylene can be enhanced, the uniform combination of the wood flour and the high-density polyethylene is promoted, the wood flour and the antibacterial fiber can also have a chemical effect, and the uniform dispersion of the antibacterial fiber and the combination force of the antibacterial fiber and a matrix are promoted, so that the uniformity and the durability of the antibacterial effect are exerted; the obtained wallboard not only has good antibacterial, mildewproof and mechanical properties, but also meets the environmental protection requirement, and is suitable for the field of architectural decoration.
Description
Technical Field
The invention belongs to the field of composite materials, and particularly relates to an antibacterial and mildewproof bamboo-wood fiber integrated wallboard.
Background
The wood-plastic composite material is a composite section mainly made of wood or cellulose as a basic material and plastic, has the advantages of wood texture of solid wood materials and weather resistance and microbial resistance of a plastic matrix, does not emit gas harmful to human health in the production and use processes, namely does not pollute the environment, can be repeatedly recycled, is a brand new green and environment-friendly product, and is also an ecological and clean composite material. The wood-plastic composite material is used as a wallboard in the field of building decoration, and has the advantages of light weight, high strength, multiple environmental protection, heat preservation and insulation, sound insulation, breathing and humidity regulation, fire prevention, rapid construction, wall body cost reduction and the like, however, the light partition board used in the market at present has the defects of poor antibacterial performance and fire prevention performance and the like.
The Chinese invention patent with the application number of CN201711235836.X discloses an antibacterial light partition board and a preparation method thereof, wherein the antibacterial light partition board comprises the following raw materials in parts by weight: 85-95 parts of modified magnesium oxysulfate cement slurry, 65-75 parts of modified fluorgypsum, 45-55 parts of modified fly ash, 40-45 parts of modified fiber antibacterial particles, 20-30 parts of modified expanded graphite, 20-30 parts of an auxiliary agent and a proper amount of water; the modified fluorgypsum comprises the following raw materials in parts by weight: 35-40 parts of fluorgypsum, 15-20 parts of alum, 10-15 parts of dolomite, 10-15 parts of calcium hydroxide, 10-15 parts of blast furnace slag, 9-11 parts of corn straw fiber and 9-11 parts of attapulgite. According to the application, the natural antibacterial agent is added to endow the bamboo fiber of the wallboard with antibacterial and mildewproof properties, but the natural antibacterial agent and the fiber are only simply physically blended to influence the exertion of the antibacterial properties.
Disclosure of Invention
The invention aims to provide an antibacterial and mildew-proof bamboo-wood fiber integrated wallboard, which is a wood-plastic composite material obtained by taking modified wood powder and high-density polyethylene as wallboard raw materials and has outstanding advantages in the aspects of wear resistance, environmental protection, recycling, sustainability, corrosion resistance and the like; in addition, after the wood flour is modified, the interface effect of the wood flour and the high-density polyethylene can be enhanced, the uniform combination of the wood flour and the high-density polyethylene is promoted, the wood flour and the antibacterial fiber can also have a chemical effect, and the uniform dispersion of the antibacterial fiber and the combination force of the antibacterial fiber and a matrix are promoted, so that the uniformity and the durability of the antibacterial effect are exerted; the obtained wallboard not only has good antibacterial, mildewproof and mechanical properties, but also meets the environmental protection requirement, and is suitable for the field of architectural decoration.
The purpose of the invention can be realized by the following technical scheme:
an antibacterial and mildew-proof bamboo wood fiber integrated wallboard comprises the following raw materials in parts by weight: 50-60 parts of high-density polyethylene, 45-55 parts of pre-modified wood powder, 8-12 parts of antibacterial bamboo fiber, 4-6 parts of filler, 1-2 parts of coupling agent, 0.8-1 part of antioxidant and 1.2-1.5 parts of lubricant;
the antibacterial and mildewproof bamboo-wood fiber integrated wallboard is prepared by the following method:
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 23-25min, placing the mixed material into a hot press for hot press molding, the hot press temperature is 170-175 ℃, the pressure is 20MPa, the pressure maintaining time is 20-25min, and taking out after natural cooling for 5-7h to obtain the wallboard.
Further, the pre-modified wood flour is prepared by the following method:
s1, adding isophorone diisocyanate and butyl acetate into a flask together according to a certain mass ratio, stirring and mixing for 13-15min at room temperature at 200r/min, adding 0.02g of dibutyltin dilaurate, heating to 40-42 ℃, dropwise adding hydroxyethyl methacrylate into a system by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 0.9g/min, keeping the temperature of 40-42 ℃ and stirring at a constant speed of 200r/min during the dropwise adding, and reacting for 3-4h to obtain a modifier;
s2, drying the wood powder at the temperature of 103-107 ℃ to constant weight, uniformly spraying a quantitative modifier on the surface of the wood powder in a fine mist shape while stirring the wood powder, and after the spraying is finished, placing the wood powder in a constant-temperature oil bath at the temperature of 80 ℃ to stir for 70-80min to obtain the pre-modified wood powder.
Further, in the step S1, the using amount ratio of isophorone diisocyanate, butyl acetate, dibutyltin dilaurate and hydroxyethyl methacrylate is 50-55g, 20-22g, 0.01g and 26-28 g; and (3) detecting the NCO value in the reaction solution every 30min by adopting a di-n-butylamine titration method in the reaction process until the NCO value is close to the theoretical value, and finishing the reaction.
Further, the mass ratio of the wood flour to the modifier used in step S2 is 10: 0.8-1.
Further, the antibacterial bamboo fiber is prepared by the following method:
1) weighing a certain amount of bamboo fiber and n-hexane in a three-necked bottle, performing ultrasonic treatment for 10-12min, transferring to an ice water bath, slowly dropwise adding a quantitative mixed solution of toluene and 2-bromoisobutyryl bromide by using a constant-pressure funnel, transferring to room temperature after dropwise adding, reacting for 24h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
2) adding the dried product obtained in the step 1) and DMF into a three-neck flask, introducing nitrogen for 10-15min, heating and stirring, adding pentamethyl diethylenetriamine, N-hydroxymethyl acrylamide and CuBr, reacting at 65-68 ℃ for 7-8h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
3) and (3) placing the dried product obtained in the step 2) into a sodium hypochlorite solution with the mass fraction of 10% for reaction for 70-80min according to the solid-to-liquid ratio of 1g:50mL, washing with tap water after the reaction is finished, washing with deionized water for 5-6 times, and drying at 50 ℃ to obtain the antibacterial bamboo fiber.
Further, the mass fraction of the 2-bromoisobutyryl bromide in the mixed solution of the toluene and the 2-bromoisobutyryl bromide in the step 1) is 15%, wherein the ratio of the dosage of the mixed solution of the bamboo fiber, the n-hexane, the toluene and the 2-bromoisobutyryl bromide is 10g:50-60mL:20-30 mL.
Furthermore, the ratio of the amount of the product dried in the step 1) in the step 2), DMF, pentamethyldiethylenetriamine, N-methylolacrylamide and CuBr is 10g to 90-100mL to 1-2g to 4-5g to 0.1 g.
The invention has the beneficial effects that:
the invention adopts pre-modified wood flour as one of the main raw materials of the wallboard, modifies the wood flour by a modifier, the molecules of the modifier contain C ═ C, and the thermal polymerization is generated on the surface of the wood flour particles to form a macromolecule hydrophobic layer; the hydrophobic layer is formed on the surface of the wood flour, so that the compatibility and the interface strength of the wood flour and a polymer matrix can be improved on one hand, and the macromolecular hydrophobic layer also forms a hydrophobic barrier layer on the other hand, so that the adsorption and absorption capacity of the wood flour to moisture can be greatly reduced, the water absorption performance of the wallboard is obviously reduced, and the corrosion and the mildew-producing effect of the moisture to the wallboard are reduced; moreover, the macromolecular hydrophobic interface layer formed on the surface of the wood powder can limit the free movement of the molecular chain segment of the polymer matrix, so that the composite material is difficult to deform when being heated, the Vicat softening temperature is increased, and the heat-resistant stability of the wallboard is improved; in addition, the molecular side chain of the hydrophobic polymer layer contains-NCO of a modifier molecule, and when the materials of the wallboard are blended at a high temperature, -NCO reacts with-OH on the antibacterial molecule grafted on the surface of the antibacterial bamboo fiber, so that the interaction force between the antibacterial bamboo fiber and wood powder is improved, the uniform dispersion of the antibacterial bamboo fiber in the wallboard material is promoted, the uniformity of the antibacterial effect is improved, and the durability of the antibacterial effect is improved;
according to the invention, the antibacterial fiber, namely the modified bamboo fiber, is added into the raw material of the wallboard, and through modification treatment, a halamine compound is formed on the surface of the bamboo fiber, and the halamine compound has the characteristics of lasting antibacterial effect, safety to human bodies and low toxicity; on one hand, the halamine compound is connected to the bamboo fiber through graft polymerization, so that the defects of poor stability, difficult processing and easy secondary pollution of the small-molecular halamine antibacterial agent can be overcome; on the other hand, macromolecular chains are grafted and polymerized on the surface of the bamboo fiber, so that the surface appearance of the bamboo fiber is rough, the contact area between the antibacterial bamboo fiber and microbial cells can be increased, bacteria can be adsorbed on the surface of the bamboo fiber, the antibacterial effect of the bamboo fiber is fully exerted, the antibacterial performance of the bamboo fiber is enhanced, the antibacterial bamboo fiber is beneficial to the function of-Cl in the antibacterial bamboo fiber, and the aim of sterilization is fulfilled; moreover, the-OH group grafted on the surface of the bamboo fiber can react with the-NCO group grafted on the surface of the bamboo powder when being blended at high temperature;
the invention obtains the wood-plastic composite material by taking the modified wood powder and the high-density polyethylene as the raw materials of the wallboard, and has outstanding advantages in the aspects of wear resistance, environmental protection, recycling, sustainability, corrosion resistance and the like; in addition, after the wood flour is modified, the interface effect of the wood flour and the high-density polyethylene can be enhanced, the uniform combination of the wood flour and the high-density polyethylene is promoted, the wood flour and the antibacterial fiber can also have a chemical effect, and the uniform dispersion of the antibacterial fiber and the combination force of the antibacterial fiber and a matrix are promoted, so that the uniformity and the durability of the antibacterial effect are exerted; the obtained wallboard not only has good antibacterial, mildewproof and mechanical properties, but also meets the environmental protection requirement, and is suitable for the field of architectural decoration.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An antibacterial and mildew-proof bamboo wood fiber integrated wallboard comprises the following raw materials in parts by weight: 50-60 parts of high-density polyethylene, 45-55 parts of pre-modified wood powder, 8-12 parts of antibacterial bamboo fiber, 4-6 parts of filler, 1-2 parts of coupling agent, 0.8-1 part of antioxidant and 1.2-1.5 parts of lubricant;
the filler is talcum powder which can be uniformly dispersed in the wallboard material under the promotion of the coupling agent, although the water absorption of the wallboard material is enhanced to a certain degree by adding the talcum powder, the talcum powder plays a good toughening role, the impact strength is obviously improved, and meanwhile, the heat stability of the wallboard material can be improved by adding the talcum powder;
the coupling agent is a silane coupling agent, namely a silane coupling agent KH550 or KH 560;
the antioxidant is antioxidant 1010 or antioxidant 168;
the lubricant is polyethylene wax;
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 23-25min, the mixing temperature is 165 ℃ and the mixed material is placed into a hot press for hot-press molding, the hot-press temperature is 175 ℃ and the pressure is 20MPa, the pressure maintaining time is 20-25min, and the mixed material is naturally cooled for 5-7h and then taken out to obtain the wallboard;
the pre-modified wood flour is prepared by the following method:
s1, adding isophorone diisocyanate and butyl acetate into a flask together according to a certain mass ratio, stirring and mixing for 13-15min at room temperature at 200r/min, adding 0.02g of dibutyltin dilaurate, heating to 40-42 ℃, dropwise adding hydroxyethyl methacrylate into a system by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 0.9g/min, keeping the temperature of 40-42 ℃ and stirring at a constant speed of 200r/min during the dropwise adding, and reacting for 3-4h to obtain a modifier;
wherein the dosage ratio of isophorone diisocyanate, butyl acetate, dibutyltin dilaurate and hydroxyethyl methacrylate is 50-55g, 20-22g, 0.01g and 26-28 g; detecting the NCO value in the reaction solution every 30min by adopting a di-n-butylamine titration method in the reaction process until the NCO value is close to the theoretical value, and finishing the reaction;
in the step, isophorone diisocyanate molecules contain two-NCO groups with different activities, the-NCO directly connected with cyclohexane has higher reaction activity, the-NCO directly connected with the cyclohexane reacts with an-OH group on hydroxyethyl methacrylate molecules by controlling the reaction temperature and the reaction time to form-NH-CO-bonds, so that a modifier is formed, and the modifier molecules contain-NCO groups and C ═ C;
s2, drying the wood powder at the temperature of 103-107 ℃ to constant weight, uniformly spraying a quantitative modifier on the surface of the wood powder in a fine mist shape while stirring the wood powder, and after the spraying is finished, placing the wood powder in a constant-temperature oil bath at the temperature of 80 ℃ to stir for 70-80min to obtain pre-modified wood powder;
wherein the mass ratio of the wood powder to the modifier is 10: 0.8-1;
the modifier molecule contains C ═ C, and the thermal polymerization is carried out on the surface of the wood powder particles to form a macromolecular hydrophobic layer; the hydrophobic layer is formed on the surface of the wood flour, so that the compatibility and the interface strength of the wood flour and a polymer matrix can be improved on one hand, and the macromolecular hydrophobic layer also forms a hydrophobic barrier layer on the other hand, so that the adsorption and absorption capacity of the wood flour to moisture can be greatly reduced, the water absorption performance of the wallboard is obviously reduced, and the corrosion and the mildew-producing effect of the moisture to the wallboard are reduced; moreover, the macromolecular hydrophobic interface layer formed on the surface of the wood powder can limit the free movement of the molecular chain segment of the polymer matrix, so that the composite material is difficult to deform when being heated, the Vicat softening temperature is increased, and the heat-resistant stability of the wallboard is improved; in addition, the molecular side chain of the hydrophobic polymer layer contains-NCO of a modifier molecule, and when the materials of the wallboard are blended at a high temperature, -NCO reacts with-OH on the antibacterial molecule grafted on the surface of the antibacterial bamboo fiber, so that the interaction force between the antibacterial bamboo fiber and wood powder is improved, the uniform dispersion of the antibacterial bamboo fiber in the wallboard material is promoted, the uniformity of the antibacterial effect is improved, and the durability of the antibacterial effect is improved;
the antibacterial bamboo fiber is prepared by the following method:
1) weighing a certain amount of bamboo fiber and n-hexane in a three-necked bottle, performing ultrasonic treatment for 10-12min, transferring to an ice water bath, slowly dropwise adding a quantitative mixed solution of toluene and 2-bromoisobutyryl bromide by using a constant-pressure funnel (the mass fraction of the 2-bromoisobutyryl bromide in the mixed solution is 15%), after dropwise adding, transferring to room temperature for reaction for 24h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
wherein the dosage ratio of the mixed solution of the bamboo fiber, the normal hexane, the toluene and the 2-bromine isobutyryl bromide is 10g to 50-60mL to 20-30mL:
in the step, the-CO-Br on the 2-bromine isobutyryl bromide molecule and the-OH on the bamboo fiber molecule are subjected to substitution reaction, so that the 2-bromine isobutyryl bromide molecule is bonded on a bamboo fiber chain, and the-Br is introduced on the bamboo fiber;
2) adding the dried product obtained in the step 1) and DMF into a three-neck flask, introducing nitrogen for 10-15min, heating and stirring, adding pentamethyl diethylenetriamine, N-hydroxymethyl acrylamide and CuBr, reacting at 65-68 ℃ for 7-8h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
the dosage ratio of the dried product in the step 1), DMF, pentamethyldiethylenetriamine, N-hydroxymethyl acrylamide and CuBr is 10g to 90-100mL to 1-2g to 4-5g to 0.1 g;
in the step, the-Br introduced on the bamboo fiber molecules and the double bonds on the pentamethyl diethylenetriamine molecules are subjected to substitution and polymerization reaction under the action of a catalyst to form a high molecular polymer on the bamboo fiber molecules, and the side chain of the high molecular polymer contains-NH-OH groups;
3) placing the product dried in the step 2) into a sodium hypochlorite solution with the mass fraction of 10% for reacting for 70-80min according to the solid-to-liquid ratio of 1g:50mL, washing with tap water after the reaction is finished, washing with deionized water for 5-6 times, and drying at 50 ℃ to obtain the antibacterial bamboo fiber;
performing chlorination reaction on-NH-OH contained on a high molecular polymer side chain of the bamboo fiber and sodium hypochlorite to form-NCl-OH, so as to obtain the antibacterial bamboo fiber; a halamine compound is formed on the surface of the bamboo fiber, and the halamine compound has the characteristics of lasting antibacterial effect, safety to human bodies and low toxicity; on one hand, the halamine compound is connected to the bamboo fiber through graft polymerization, so that the defects of poor stability, difficult processing and easy secondary pollution of the small-molecular halamine antibacterial agent can be overcome; on the other hand, macromolecular chains are grafted and polymerized on the surface of the bamboo fiber, so that the surface appearance of the bamboo fiber is rough, the contact area between the antibacterial bamboo fiber and microbial cells can be increased, bacteria can be adsorbed on the surface of the bamboo fiber, the antibacterial effect of the bamboo fiber is fully exerted, the antibacterial performance of the bamboo fiber is enhanced, the antibacterial bamboo fiber is beneficial to the function of-Cl in the antibacterial bamboo fiber, and the aim of sterilization is fulfilled; and the-OH group grafted on the surface of the bamboo fiber can react with the-NCO group grafted on the surface of the bamboo powder when being blended at high temperature.
Example 1
An antibacterial and mildew-proof bamboo wood fiber integrated wallboard comprises the following raw materials in parts by weight: 50 parts of high-density polyethylene, 45 parts of pre-modified wood powder, 8 parts of antibacterial bamboo fiber, 4 parts of filler, 1 part of coupling agent, 0.8 part of antioxidant and 1.2 parts of lubricant;
the antibacterial and mildewproof bamboo-wood fiber integrated wallboard is prepared by the following method:
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 23min, the mixing temperature is 160 ℃, putting the mixed material into a hot press for hot press forming, the hot press temperature is 170 ℃, the pressure is 20MPa, the pressure maintaining time is 20min, and naturally cooling for 5h and then taking out to obtain the wallboard.
Example 2
An antibacterial and mildew-proof bamboo wood fiber integrated wallboard comprises the following raw materials in parts by weight: 55 parts of high-density polyethylene, 50 parts of pre-modified wood powder, 10 parts of antibacterial bamboo fiber, 5 parts of filler, 1.5 parts of coupling agent, 0.9 part of antioxidant and 1.4 parts of lubricant;
the antibacterial and mildewproof bamboo-wood fiber integrated wallboard is prepared by the following method:
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 24min, the mixing temperature is 163 ℃, putting the mixed material into a hot press for hot-press forming, the hot-press temperature is 173 ℃, the pressure is 20MPa, the pressure maintaining time is 23min, and naturally cooling for 6h and then taking out to obtain the wallboard.
Example 3
An antibacterial and mildew-proof bamboo wood fiber integrated wallboard comprises the following raw materials in parts by weight: 60 parts of high-density polyethylene, 55 parts of pre-modified wood powder, 12 parts of antibacterial bamboo fiber, 6 parts of filler, 2 parts of coupling agent, 1 part of antioxidant and 1.5 parts of lubricant;
the antibacterial and mildewproof bamboo-wood fiber integrated wallboard is prepared by the following method:
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 25min, the mixing temperature is 165 ℃, putting the mixed material into a hot press for hot press forming, the hot press temperature is 175 ℃, the pressure is 20MPa, the pressure maintaining time is 25min, and naturally cooling for 7h and then taking out to obtain the wallboard.
Comparative example 1
The pre-modified wood flour of example 1 was replaced by regular wood flour, and the remaining raw materials and preparation process were unchanged.
Comparative example 2
The antibacterial fiber in example 1 was replaced with bamboo fiber, and the remaining raw materials and preparation process were unchanged.
The wallboards prepared in examples 1-3 and comparative examples 1-2 were cut into test bars and tested for the following properties:
testing the water absorption rate; testing the tensile property according to ASTM D638-14, wherein the tensile speed is 10 mm/min; testing impact performance according to GB/T1451-2005, wherein the impact energy is 0.5J during loading, and the impact speed is 3.8 m/s; testing the bending property according to ASTM D790-10, and controlling the loading speed at 10 mm/min; the bacteriostasis rate and the mildew growth grade of staphylococcus aureus and escherichia coli are tested by referring to QB/T2591-2003, and the test results are shown in the following table:
as can be seen from the above table, the water absorption of the wallboard composites made in examples 1-3 is 0.15-0.18%, which demonstrates that the wallboard composites made in accordance with the present invention have very low water absorption, and can prevent mildew and corrosion caused by moisture ingress; as can be seen from the above table, the wallboard composites made in examples 1-3 had tensile strengths of 14.9-15.4MPa and impact strengths of 8.5-8.7 kJ.m-2The bending strength is 26.7-26.9MPa, which shows that the wallboard prepared by the invention has excellent mechanical property; as can be seen from the above table, the bacteriostatic rates of the wallboard composite materials prepared in examples 1-3 to staphylococcus aureus and escherichia coli all reach more than 99.9%, and the mildew-growth grades are all 0 grade, which indicates that the wallboard composite material prepared by the invention has excellent antibacterial and mildew-proof properties; with reference to comparative example 1, the wood powder modified in the wood is shownThe surface of the powder particles is subjected to thermal polymerization to form a high-molecular hydrophobic layer, so that the compatibility and the interface strength of the wood powder and a polymer matrix can be increased, and the high-molecular hydrophobic layer also forms a hydrophobic barrier layer, so that the adsorption and absorption capacity of the wood powder to moisture can be greatly reduced, the water absorption performance of the wallboard is remarkably reduced, and the corrosion and mildewing effects of the moisture to the wallboard are reduced; the molecular side chain of the hydrophobic polymer layer contains-NCO of a modifier molecule, and when the materials of the wallboard are mixed at high temperature, -NCO reacts with-OH on the antibacterial molecule grafted on the surface of the antibacterial bamboo fiber, so that the interaction force between the antibacterial bamboo fiber and wood powder is improved, the uniform dispersion of the antibacterial bamboo fiber in the wallboard material is promoted, the uniformity of the antibacterial effect is improved, and the durability of the antibacterial effect is improved; and the combination of comparative example 2 shows that the bamboo fiber can be endowed with good antibacterial performance after being grafted with halamine molecules.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The antibacterial and mildew-proof bamboo-wood fiber integrated wallboard is characterized by comprising the following raw materials in parts by weight: 50-60 parts of high-density polyethylene, 45-55 parts of pre-modified wood powder, 8-12 parts of antibacterial bamboo fiber, 4-6 parts of filler, 1-2 parts of coupling agent, 0.8-1 part of antioxidant and 1.2-1.5 parts of lubricant;
the antibacterial and mildewproof bamboo-wood fiber integrated wallboard is prepared by the following method:
putting the high-density polyethylene, the pre-modified wood powder, the antibacterial bamboo fiber, the filler, the coupling agent, the antioxidant and the lubricant into a high-speed mixer according to parts by weight for mixing, wherein the mixing speed is 2000r/min, the mixing time is 23-25min, placing the mixed material into a hot press for hot press molding, the hot press temperature is 170-175 ℃, the pressure is 20MPa, the pressure maintaining time is 20-25min, and taking out after natural cooling for 5-7h to obtain the wallboard.
2. The antibacterial and mildewproof bamboo-wood fiber integrated wallboard of claim 1, wherein the pre-modified wood flour is prepared by the following method:
s1, adding isophorone diisocyanate and butyl acetate into a flask together according to a certain mass ratio, stirring and mixing for 13-15min at room temperature at 200r/min, adding 0.02g of dibutyltin dilaurate, heating to 40-42 ℃, dropwise adding hydroxyethyl methacrylate into a system by using a constant-pressure dropping funnel, controlling the dropwise adding speed to be 0.9g/min, keeping the temperature of 40-42 ℃ and stirring at a constant speed of 200r/min during the dropwise adding, and reacting for 3-4h to obtain a modifier;
s2, drying the wood powder at the temperature of 103-107 ℃ to constant weight, uniformly spraying a quantitative modifier on the surface of the wood powder in a fine mist shape while stirring the wood powder, and after the spraying is finished, placing the wood powder in a constant-temperature oil bath at the temperature of 80 ℃ to stir for 70-80min to obtain the pre-modified wood powder.
3. The antibacterial and mildewproof bamboo and wood fiber integrated wallboard of claim 2, wherein the using amount ratio of isophorone diisocyanate, butyl acetate, dibutyltin dilaurate and hydroxyethyl methacrylate in the step S1 is 50-55g, 20-22g, 0.01g, 26-28 g; and (3) detecting the NCO value in the reaction solution every 30min by adopting a di-n-butylamine titration method in the reaction process until the NCO value is close to the theoretical value, and finishing the reaction.
4. The antibacterial and mildewproof bamboo-wood fiber integrated wallboard of claim 2, wherein the mass ratio of the wood flour to the modifier in the step S2 is 10: 0.8-1.
5. The antibacterial and mildewproof bamboo-wood fiber integrated wallboard of claim 1, wherein the antibacterial bamboo fiber is prepared by the following method:
1) weighing a certain amount of bamboo fiber and n-hexane in a three-necked bottle, performing ultrasonic treatment for 10-12min, transferring to an ice water bath, slowly dropwise adding a quantitative mixed solution of toluene and 2-bromoisobutyryl bromide by using a constant-pressure funnel, transferring to room temperature after dropwise adding, reacting for 24h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
2) adding the dried product obtained in the step 1) and DMF into a three-neck flask, introducing nitrogen for 10-15min, heating and stirring, adding pentamethyl diethylenetriamine, N-hydroxymethyl acrylamide and CuBr, reacting at 65-68 ℃ for 7-8h, performing suction filtration, washing with absolute ethyl alcohol and distilled water for 3-4 times respectively, and drying;
3) and (3) placing the dried product obtained in the step 2) into a sodium hypochlorite solution with the mass fraction of 10% for reaction for 70-80min according to the solid-to-liquid ratio of 1g:50mL, washing with tap water after the reaction is finished, washing with deionized water for 5-6 times, and drying at 50 ℃ to obtain the antibacterial bamboo fiber.
6. The antibacterial and mildewproof bamboo-wood fiber integrated wallboard of claim 5, wherein the mass fraction of the 2-bromoisobutyryl bromide in the mixed solution of toluene and 2-bromoisobutyryl bromide in the step 1) is 15%, wherein the ratio of the usage amount of the mixed solution of bamboo fiber, n-hexane, toluene and 2-bromoisobutyryl bromide is 10g:50-60mL:20-30 mL.
7. The antibacterial and mildewproof bamboo and wood fiber integrated wallboard of claim 5, wherein the ratio of the amount of DMF, pentamethyldiethylenetriamine, N-methylolacrylamide and CuBr dried in the step 1) in the step 2) is 10g to 90-100mL to 1-2g to 4-5g to 0.1 g.
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| CN103059596A (en) * | 2013-01-23 | 2013-04-24 | 浙江大学 | Nano-reinforced wood-plastic composite and preparation method thereof |
| CN105504501A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Natural-fiber-reinforced polypropylene composite material with mildewproof and antimicrobial properties and preparation method thereof |
| CN109096643A (en) * | 2018-07-20 | 2018-12-28 | 张莉敏 | A kind of novel green fire-resistant waterproof wood plastic composite and preparation method thereof |
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| CN110885566A (en) * | 2019-12-11 | 2020-03-17 | 安徽霖园外新材料有限公司 | Anti-corrosion wear-resistant bamboo-plastic composite material and preparation method thereof |
| CN111410470A (en) * | 2020-04-30 | 2020-07-14 | 保定市桥与果新材料科技有限公司 | Passive house biomass wallboard and preparation method thereof |
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