CN116925616A - Antibacterial board for cabinet and production process thereof - Google Patents
Antibacterial board for cabinet and production process thereof Download PDFInfo
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- CN116925616A CN116925616A CN202310901750.5A CN202310901750A CN116925616A CN 116925616 A CN116925616 A CN 116925616A CN 202310901750 A CN202310901750 A CN 202310901750A CN 116925616 A CN116925616 A CN 116925616A
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- antibacterial
- parts
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- cabinets
- antibacterial agent
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 155
- 238000004519 manufacturing process Methods 0.000 title abstract description 15
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 63
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 40
- 238000002360 preparation method Methods 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 26
- USBNITSVNXBKQS-UHFFFAOYSA-N 8-bromooctyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCCCBr USBNITSVNXBKQS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 23
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 22
- 239000004417 polycarbonate Substances 0.000 claims abstract description 22
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 18
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims abstract description 18
- 239000003505 polymerization initiator Substances 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 12
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 12
- 239000008116 calcium stearate Substances 0.000 claims abstract description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000002048 multi walled nanotube Substances 0.000 claims description 43
- 238000003756 stirring Methods 0.000 claims description 33
- 240000000851 Vaccinium corymbosum Species 0.000 claims description 17
- 235000003095 Vaccinium corymbosum Nutrition 0.000 claims description 17
- 235000017537 Vaccinium myrtillus Nutrition 0.000 claims description 17
- 235000021014 blueberries Nutrition 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 244000226021 Anacardium occidentale Species 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 235000020226 cashew nut Nutrition 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000013067 intermediate product Substances 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 9
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 8
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical compound CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005238 degreasing Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- 230000000379 polymerizing effect Effects 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 15
- 229920000642 polymer Polymers 0.000 description 14
- 239000000126 substance Substances 0.000 description 13
- 238000005452 bending Methods 0.000 description 11
- 238000004090 dissolution Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 150000004714 phosphonium salts Chemical group 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000000845 anti-microbial effect Effects 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- GMXIEASXPUEOTG-UHFFFAOYSA-N 8-bromooctan-1-ol Chemical compound OCCCCCCCCBr GMXIEASXPUEOTG-UHFFFAOYSA-N 0.000 description 2
- 229920002413 Polyhexanide Polymers 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 206010003591 Ataxia Diseases 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002934 lysing effect Effects 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D155/00—Coating compositions based on homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C09D123/00 - C09D153/00
- C09D155/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/10—Esters
- C08F120/22—Esters containing halogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the field of plates for cabinets, and particularly discloses an antibacterial plate for cabinets and a production process thereof. The antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, wherein the antibacterial layer comprises the following components in parts by weight: 80-140 parts of acrylonitrile-butadiene-styrene copolymer, 10-50 parts of polycarbonate, 10-30 parts of dimethyl sulfoxide, 2-4 parts of silicon dioxide, 2-6 parts of calcium stearate and 10-20 parts of high molecular antibacterial agent, wherein the high molecular antibacterial agent comprises 8-10:1 of 8-bromooctyl methacrylate and a polymerization initiator; the preparation method comprises the following steps: s1, treating a substrate layer, preparing an S2 high-molecular antibacterial agent, preparing an S3 antibacterial master batch, coating an S4 antibacterial layer and soaking and molding S5. The antibacterial board for the cabinet can improve the antibacterial durability of the antibacterial layer.
Description
Technical Field
The application relates to the field of plates for cabinets, in particular to an antibacterial plate for cabinets and a production process thereof.
Background
The cabinet is a necessary device in a kitchen, is generally used for storing articles such as kitchen ware, food materials and the like, and can also be used for cooking and the like. The common cabinet comprises a cabinet body, a door plate, hardware, a table top and electric appliances, wherein the cabinet body and the door plate are made of a plurality of groups of cabinet plates with different lengths and widths.
In the related art, the cabinet board comprises a base material layer and an antibacterial layer wrapping the outside of the base material layer, wherein the common antibacterial layer is made of antibacterial plastics added with antibacterial agents. Common antibacterial agents are zeolite antibacterial agents, phosphate double salt antibacterial agents and TiO 2 Particles, and the like.
In view of the above-mentioned related art, the inventors consider that the inorganic antibacterial agents are all dissolution type antibacterial mechanisms, the content of the antibacterial agent in the product is continuously reduced with time, and the antibacterial durability is difficult to be ensured. The polymer antibacterial agent is a non-dissolution type antibacterial mechanism, and can overcome the defects of dissolution effects of inorganic antibacterial agents and organic micromolecule antibacterial agents, however, the polymer antibacterial agent has poor thermal stability and is difficult to resist the higher processing temperature of plastics, so improvement is needed.
Disclosure of Invention
In order to improve the antibacterial durability of the antibacterial layer, the application provides an antibacterial plate for a cabinet and a production process thereof.
The application provides an antibacterial board for a cabinet and a production process thereof, which adopts the following technical scheme:
in a first aspect, the application provides an antibacterial board for a cabinet, which adopts the following technical scheme:
the antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, and is characterized in that the antibacterial layer comprises the following components in parts by weight:
80-140 parts of acrylonitrile-butadiene-styrene copolymer;
10-50 parts of polycarbonate;
10-30 parts of dimethyl sulfoxide;
2-4 parts of silicon dioxide;
2-6 parts of calcium stearate;
10-20 parts of a high molecular antibacterial agent;
the high molecular antibacterial agent comprises 8-bromooctyl methacrylate and a polymerization initiator in a mass ratio of 8-10:1.
By adopting the technical proposal, on one hand, the high molecular antibacterial agent containing quaternary phosphonium salt structure polymer with good heat resistance is formed by the methacrylic acid-8-bromooctyl ester and the polymerization initiator, and the antibacterial agent is not easy to be denatured or decomposed during the processing of an antibacterial layer. The polymeric antibacterial agent adsorbs bacteria by electrostatic action and then kills the bacteria by lysing cell membranes. On the other hand, the polymer antibacterial agent is a non-dissolution type antibacterial mechanism, so that the polymer antibacterial agent cannot migrate out of the matrix material along with the time to cause the antibacterial property of the material to be reduced, and the problem of poor antibacterial durability of the inorganic antibacterial agent caused by dissolution can be avoided.
In addition, the antibacterial layer obtained by blending the acrylonitrile-butadiene-styrene copolymer and the polycarbonate has good structural strength and toughness, and also has excellent impact resistance and high flame retardance, thereby being beneficial to improving the mechanical strength of the antibacterial plate for the cabinet. Dimethyl sulfoxide as a solvent for acrylonitrile-butadiene-styrene copolymer and polycarbonate can improve compatibility of both. The silica can tightly bond the acrylonitrile-butadiene-styrene copolymer and the polycarbonate, thereby improving the mechanical strength of the antibacterial layer.
Preferably, the high molecular antibacterial agent also comprises 2-3 parts by weight of cashew nut shell oil.
By adopting the technical scheme, the methacrylic acid-8-bromooctyl ester and the polymerization initiator can form a high molecular polymer with the cashew nut shell oil, and chain segments contained in the cashew nut shell oil in the high molecular polymer can be mutually dissolved with the polycarbonate, so that the compatibility of the high molecular antibacterial agent and the polycarbonate is improved, and the mechanical property of the antibacterial layer is improved. In addition, the cashew nut shell oil introduces a rigid gene benzene ring, so that the molecular chain rigidity of the high molecular polymer is increased, and the tensile strength and the bending strength of the antibacterial layer are improved to a certain extent.
Preferably, the polymerization initiator is dicumyl peroxide.
By adopting the technical scheme, on one hand, the dicumyl peroxide can polymerize the 8-bromooctyl methacrylate by free radicals, so that the 8-bromooctyl methacrylate can synthesize a polymer containing a quaternary phosphonium salt structure, and the high-molecular antibacterial agent has excellent antibacterial performance; on the other hand, the dicumyl peroxide can crosslink the methacrylic acid-8-bromooctyl after polycondensation, which is helpful for improving the mechanical property of the high molecular antibacterial agent and further improving the mechanical property of the antibacterial layer.
Preferably, the antibacterial layer further comprises 4-8 parts by weight of modified multi-wall carbon nanotubes.
By adopting the technical scheme, the multi-wall carbon nano tube has excellent mechanical property and extremely high structural strength, is favorable for further improving the tensile strength, impact strength and bending strength of the antibacterial layer, has heat resistance and corrosion resistance, and is favorable for improving the thermal stability of the antibacterial layer, so that the service life of the antibacterial layer is prolonged.
Preferably, the preparation process of the modified multiwall carbon nanotubes is as follows:
adding 4-10 parts of multi-wall carbon nano tube into 200-400 parts of ethanol water solution with the volume fraction of 85-95% to prepare multi-wall carbon nano tube solution,
then, after the multi-wall carbon nano tube solution is subjected to ultrasonic dispersion for 1-2 hours, 40-70 parts of vinyl trimethoxy silane is added and stirred to obtain a mixed solution; heating the mixed solution in an oil bath at 50-80 ℃ for reaction for 8-10h to obtain a suspension;
washing the suspension with absolute ethanol for 3-5 times, and centrifuging at a centrifugation speed of 1500-2000r/min for 10-20min to obtain precipitate; finally, the sediment is dried in vacuum under the constant temperature condition of 35-55 ℃ to obtain the modified multi-wall carbon nano tube.
By adopting the technical scheme, as the vinyl trimethoxy silane has reactivity to the multi-wall carbon nano tube, the modified multi-wall carbon nano tube modified by the vinyl trimethoxy silane can form a bonding layer bonded with the organic group, so that the compatibility of the multi-wall carbon nano tube and the organic matters in the antibacterial layer is improved, and further the mechanical properties such as tensile strength, impact strength, bending strength and the like of the antibacterial layer are further improved.
Preferably, the antibacterial layer further comprises 1-2 parts by weight of blueberry leaf extract.
By adopting the technical scheme, the blueberry leaf extract can effectively inhibit the generation of microorganisms such as escherichia coli, staphylococcus aureus and the like, has a broad antibacterial spectrum, has strong antibacterial activity, and causes little drug resistance. In addition, through the repeated recycling of the blueberry leaves, the waste of resources can be effectively reduced, and the resources are reasonably utilized.
Preferably, the antibacterial layer further comprises 2-3 parts by weight of dodecyl dimethyl amine oxide.
By adopting the technical scheme, the dodecyl dimethyl amine oxide can reduce the interfacial tension of each component in the antibacterial layer system, and is beneficial to improving the stability of each component, so that the thermal stability of the antibacterial layer is improved; and the antibacterial agent has the advantages of low physiological toxicity, easiness in biodegradation, certain sterilization performance and mildew resistance, and capability of effectively improving the antibacterial performance of the antibacterial layer.
In a second aspect, the application provides a production process of an antibacterial board for a cabinet, which adopts the following technical scheme:
the production process of the antibacterial board for the cabinet comprises the following steps:
s1, substrate layer treatment: degreasing the surface of the plate-shaped member, naturally drying for 24-36h, and coarsening the surface of the plate-shaped member to ensure that the surface roughness of the plate-shaped member is Ra0.1-0.3, thereby obtaining a substrate layer;
s2, preparing a high-molecular antibacterial agent: uniformly mixing 8-bromooctyl methacrylate and a polymerization initiator according to the required weight parts of a formula, then polymerizing at 80-90 ℃ for 1-2 hours to obtain a premix, washing the premix for 3-5 times by tetrahydrofuran, and drying at a constant temperature of 30-40 ℃ for 3-7 hours to obtain the high-molecular antibacterial agent;
s3, preparation of an antibacterial master batch: stirring and kneading the high molecular antibacterial agent, the acrylonitrile-butadiene-styrene copolymer, the polycarbonate, the dimethyl sulfoxide, the silicon dioxide and the calcium stearate prepared by the S2 according to the required weight parts of the formula, wherein the stirring speed is 360-480r/min, the stirring temperature is 210-240 ℃ and the stirring time is 6-10min, so as to obtain an antibacterial master batch;
s4, coating an antibacterial layer: according to the required weight portion of the formula, placing the antibacterial master batch obtained in the step S3 into a spraying device, spraying the antibacterial master batch to the outside of the substrate layer obtained in the step S1 at room temperature, wrapping the substrate layer, and cooling the substrate layer at room temperature for 28-36h to obtain an intermediate product; s5, soaking and forming: and (3) placing the intermediate product obtained in the step (S4) in deionized water at room temperature for soaking for 20-40 days to obtain the antibacterial board for the cabinet.
In summary, the application has the following beneficial effects:
1. the high molecular antibacterial agent containing the quaternary phosphonium salt structure polymer with good heat resistance is formed by the methacrylic acid-8-bromooctyl ester and the polymerization initiator, so that the high molecular antibacterial agent is not easy to denature or decompose during processing of an antibacterial layer, and is a non-dissolution type antibacterial mechanism, so that the high molecular antibacterial agent cannot migrate out of a matrix material along with the time to cause the decrease of the antibacterial property of the material, and the problem of poor antibacterial durability caused by dissolution of an inorganic antibacterial agent can be avoided;
2. the cashew shell oil not only improves the compatibility of the high molecular antibacterial agent and the polycarbonate, but also introduces a rigid gene benzene ring to increase the rigidity of the molecular chain of the high molecular polymer, thereby improving the tensile strength and the bending strength of the antibacterial layer to a certain extent; 3. the modified multiwall carbon nanotube modified by the vinyl trimethoxy silane can form a bonding layer bonded with the organic group, so that the compatibility of the multiwall carbon nanotube and organic matters in the antibacterial layer is improved, and the mechanical properties such as tensile strength, impact strength, bending strength and the like of the antibacterial layer are further improved.
Detailed Description
The application is further described in detail below with reference to the following examples, which are specifically described: the following examples, in which no specific conditions are noted, are conducted under conventional conditions or conditions recommended by the manufacturer, and the raw materials used in the following examples are commercially available from ordinary sources except for the specific descriptions.
The embodiment of the application adopts the following raw materials:
the type of the acrylonitrile-butadiene-styrene copolymer is PA-757, which is purchased from Shanghai Wang Jin Xin New Material technology Co., ltd; the polycarbonate model is T65, purchased from Huizhou gold garden commerce and trade companyCompany limited; dimethyl sulfoxide has a chemical formula of C 2 H 6 OS, molecular weight 78.13; the chemical formula of the silicon dioxide is SiO 2 Molecular weight 60.084; calcium stearate of the chemical formula C 36 H 70 CaO 4 Molecular weight 607.017; methacrylamide has a chemical formula of C 4 H 7 NO, molecular weight 85.104; dichloromethane has chemical formula of CH 2 Cl 2 Molecular weight 84.933; 8-bromo-1-octanol of formula C 8 H 17 BrO, molecular weight 209.12; the chemical formula of triethylamine is C 6 H 15 N, molecular weight 101.19; ethyl acetate of formula C 4 H 8 O 2 Molecular weight 88.105; petroleum ether model is 30-60 national standard, purchased from Jinan Hongju chemical industry Co., ltd; cashew nut shell oil has a molecular weight of 304.5099 and is purchased from ataxia's chemical industry limited; dicumyl peroxide has a chemical formula of C 18 H 22 O 2 Molecular weight 270.366; the model of the multiwall carbon nanotube is VGCF-H, and is purchased from Shanghai electric International trade company; vinyl trimethoxy silane of formula C 5 H 12 O 3 Si, molecular weight 148.232; dodecyl dimethyl amine oxide has chemical formula C 14 H 31 NO, molecular weight 228.3946; tetrahydrofuran has a chemical formula of C 4 H 8 O, molecular weight 72.107; polyhexamethylene biguanide hydrochloride has the chemical formula C 18 H 41 ClN 10 Purchased from jinan zhiyuan chemical industry limited liability company.
Preparation example 1
The preparation process of the 8-bromooctyl methacrylate comprises the following steps: 50Kg of 8-bromo-1-octanol, 38Kg of triethylamine, 100L of dichloromethane and 39Kg of methacrylamide are uniformly mixed, stirred and reacted at a rotation speed of 200r/min for 1h at 15 ℃, and then the reaction is continued at room temperature for 24h. After the reaction was completed, the obtained product was purified with ethyl acetate: petroleum ether=1:10 (v/v) three times, collecting the product eluent, vacuum rotary evaporating the product eluent at 60 ℃, and vacuum drying to obtain the 8-bromooctyl methacrylate.
Preparation example 2
The preparation process of the blueberry leaf extract comprises the following steps: cleaning fresh blueberry leaves, cutting the fresh blueberry leaves into filaments, drying the blueberry leaf filaments at 60 ℃ for 3 hours, crushing the blueberry leaf filaments, and filtering the crushed blueberry leaf filaments by a 40-mesh sieve to obtain dry blueberry leaf powder; reflux-extracting blueberry leaf powder and 75% ethanol with a volume fraction of 1:15g/mL for 2 times at 80 ℃ for 4 hours, stirring the raw materials every 20min for 3min in the extraction process, and collecting the extracted filtrate to obtain an extracting solution; vacuum rotary evaporating the extractive solution at 50deg.C, and lyophilizing to obtain blueberry leaf extract.
Preparation example 3
The preparation process of the modified multiwall carbon nanotube comprises the following steps: adding 4Kg of multi-wall carbon nano tube into 200Kg of ethanol water solution with the volume fraction of 85% to prepare multi-wall carbon nano tube solution, then ultrasonically dispersing the multi-wall carbon nano tube solution for 1h, adding 40Kg of vinyl trimethoxy silane, and stirring to obtain mixed solution; heating the mixed solution in an oil bath at 50 ℃ for reaction for 8 hours to obtain a suspension; washing the suspension with absolute ethanol for 3 times, and performing centrifugal separation at a centrifugal speed of 1500r/min for 10min to obtain a precipitate; finally, the precipitate is dried in vacuum under the constant temperature condition of 35 ℃ to obtain the modified multiwall carbon nanotube.
Preparation example 4
The preparation process of the modified multiwall carbon nanotube comprises the following steps: firstly, adding 10Kg of multi-wall carbon nano tube into 400Kg of ethanol water solution with the volume fraction of 95% to prepare multi-wall carbon nano tube solution, then, after the multi-wall carbon nano tube solution is subjected to ultrasonic dispersion for 2 hours, adding 70Kg of vinyl trimethoxy silane, and stirring to obtain mixed solution; heating the mixed solution in an oil bath at 80 ℃ for reaction for 10 hours to obtain a suspension; washing the suspension with absolute ethanol for 5 times, and performing centrifugal separation at a centrifugal speed of 2000r/min for 20min to obtain a precipitate; finally, the precipitate is dried in vacuum under the constant temperature condition of 55 ℃ to obtain the modified multiwall carbon nanotube.
Preparation example 5
The preparation process of the modified multiwall carbon nanotube comprises the following steps: firstly, adding 7Kg of multi-wall carbon nano tube into 300Kg of ethanol water solution with the volume fraction of 90% to prepare multi-wall carbon nano tube solution, then, after ultrasonic dispersion of the multi-wall carbon nano tube solution for 1.5 hours, adding 55Kg of vinyl trimethoxy silane, and stirring to obtain mixed solution; heating the mixed solution in an oil bath at 65 ℃ for reaction for 9 hours to obtain a suspension; washing the suspension with absolute ethanol for 4 times, and performing centrifugal separation at a centrifugal speed of 1750r/min for 15min to obtain precipitate; finally, the precipitate is dried in vacuum under the constant temperature condition of 45 ℃ to obtain the modified multiwall carbon nanotube.
Example 1
The antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, wherein the antibacterial layer comprises the following components in parts by weight:
80Kg of acrylonitrile-butadiene-styrene copolymer;
10Kg of polycarbonate;
10Kg of dimethyl sulfoxide;
2Kg of silicon dioxide;
2Kg of calcium stearate;
10Kg of macromolecular antibacterial agent;
the high molecular antibacterial agent comprises 8-bromooctyl methacrylate and dicumyl peroxide with a mass ratio of 8:1.
The production process of the antibacterial board for the cabinet comprises the following steps:
s1, substrate layer treatment: degreasing the surface of the plate-shaped member, naturally drying for 24 hours, and roughening the surface of the plate-shaped member to ensure that the surface roughness of the plate-shaped member is Ra0.1, thereby obtaining a substrate layer;
s2, preparing a high-molecular antibacterial agent: uniformly mixing 8-bromooctyl methacrylate and a polymerization initiator, and then polymerizing at the polymerization temperature of 80 ℃ for 1h to obtain a premix, washing the premix for 3 times by tetrahydrofuran, and drying at the constant temperature of 30 ℃ for 3h to obtain a high-molecular antibacterial agent;
s3, preparation of an antibacterial master batch: stirring and kneading the high molecular antibacterial agent, the acrylonitrile-butadiene-styrene copolymer, the polycarbonate, the dimethyl sulfoxide, the silicon dioxide and the calcium stearate prepared by the S2 according to the required weight parts of the formula, wherein the stirring speed is 360r/min, the stirring temperature is 210 ℃, and the stirring time is 6min, so as to obtain an antibacterial master batch;
s4, coating an antibacterial layer: according to the required weight portion of the formula, placing the antibacterial master batch obtained in the step S3 into a spraying device, spraying the antibacterial master batch to the outside of the substrate layer obtained in the step S1 at room temperature, wrapping the substrate layer, and cooling the substrate layer at room temperature for 28 hours to obtain an intermediate product;
s5, soaking and forming: and (3) placing the intermediate product obtained in the step (S4) in deionized water at room temperature for soaking for 20 days to obtain the antibacterial board for the cabinet.
Example 2
The antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, wherein the antibacterial layer comprises the following components in parts by weight:
140Kg of acrylonitrile-butadiene-styrene copolymer;
50Kg of polycarbonate;
30Kg of dimethyl sulfoxide;
4Kg of silicon dioxide;
6Kg of calcium stearate;
20Kg of macromolecular antibacterial agent;
the high molecular antibacterial agent comprises 8-bromooctyl methacrylate and dicumyl peroxide with the mass ratio of 10:1.
The production process of the antibacterial board for the cabinet comprises the following steps:
s1, substrate layer treatment: degreasing the surface of the plate-shaped member, naturally drying for 36h, and roughening the surface of the plate-shaped member to ensure that the surface roughness of the plate-shaped member is Ra0.3, thereby obtaining a substrate layer;
s2, preparing a high-molecular antibacterial agent: uniformly mixing 8-bromooctyl methacrylate and a polymerization initiator, and then polymerizing at 90 ℃ for 2 hours to obtain a premix, washing the premix for 5 times by tetrahydrofuran, and drying at a constant temperature of 40 ℃ for 7 hours to obtain a high-molecular antibacterial agent;
s3, preparation of an antibacterial master batch: stirring and kneading the high molecular antibacterial agent, the acrylonitrile-butadiene-styrene copolymer, the polycarbonate, the dimethyl sulfoxide, the silicon dioxide and the calcium stearate prepared by the S2 according to the required weight parts of the formula, wherein the stirring speed is 480r/min, the stirring temperature is 240 ℃, and the stirring time is 10min, so as to obtain an antibacterial master batch;
s4, coating an antibacterial layer: according to the required weight portion of the formula, placing the antibacterial master batch obtained in the step S3 into a spraying device, spraying the antibacterial master batch to the outside of the substrate layer obtained in the step S1 at room temperature, wrapping the substrate layer, and cooling the substrate layer at room temperature for 36 hours to obtain an intermediate product;
s5, soaking and forming: and (3) placing the intermediate product obtained in the step (S4) in deionized water at room temperature for soaking for 40 days to obtain the antibacterial board for the cabinet.
Example 3
The antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, wherein the antibacterial layer comprises the following components in parts by weight:
110Kg of acrylonitrile-butadiene-styrene copolymer;
30Kg of polycarbonate;
20Kg of dimethyl sulfoxide;
3Kg of silicon dioxide;
4Kg of calcium stearate;
15Kg of macromolecular antibacterial agent;
the high molecular antibacterial agent comprises 8-bromooctyl methacrylate and dicumyl peroxide with the mass ratio of 9:1.
The production process of the antibacterial board for the cabinet comprises the following steps:
s1, substrate layer treatment: degreasing the surface of the plate-shaped member, naturally drying for 30 hours, and roughening the surface of the plate-shaped member to ensure that the surface roughness of the plate-shaped member is Ra0.2, thereby obtaining a substrate layer;
s2, preparing a high-molecular antibacterial agent: uniformly mixing 8-bromooctyl methacrylate and a polymerization initiator, and then polymerizing at a polymerization temperature of 85 ℃ for 1.5 hours to obtain a premix, washing the premix for 4 times by tetrahydrofuran, and drying at a constant temperature of 35 ℃ for 5 hours to obtain a high-molecular antibacterial agent;
s3, preparation of an antibacterial master batch: stirring and kneading the high molecular antibacterial agent, the acrylonitrile-butadiene-styrene copolymer, the polycarbonate, the dimethyl sulfoxide, the silicon dioxide and the calcium stearate prepared by the S2 according to the required weight parts of the formula, wherein the stirring speed is 420r/min, the stirring temperature is 225 ℃, and the stirring time is 8min, so as to obtain an antibacterial master batch;
s4, coating an antibacterial layer: according to the required weight portion of the formula, placing the antibacterial master batch obtained in the step S3 into a spraying device, spraying the antibacterial master batch to the outside of the substrate layer obtained in the step S1 at room temperature, wrapping the substrate layer, and cooling the substrate layer at room temperature for 32 hours to obtain an intermediate product;
s5, soaking and forming: and (3) placing the intermediate product obtained in the step (S4) in deionized water at room temperature for soaking for 30 days to obtain the antibacterial board for the cabinet.
Example 4
The difference from example 3 is that 2Kg of cashew nutshell oil was also added during the polymerization of 8-bromooctyl methacrylate in the preparation of S2 polymeric antimicrobial.
Example 5
The difference from example 3 is that 3Kg of cashew nutshell oil was also added during the polymerization of 8-bromooctyl methacrylate in the preparation of S2 polymeric antimicrobial.
Example 6
The difference from example 3 is that 3Kg of cashew nutshell oil was also added during the polymerization of 8-bromooctyl methacrylate in the preparation of S2 polymeric antimicrobial.
Example 7
The difference from example 6 is that 4Kg of the modified multi-walled carbon nanotube prepared in preparation example 3 was further added during the stirring reaction of the antibacterial master batch at the time of preparation of the S3 antibacterial master batch.
Example 8
The difference from example 6 is that 8Kg of the modified multi-walled carbon nanotube prepared in preparation example 3 was further added during the stirring reaction of the antibacterial master batch at the time of preparation of the S3 antibacterial master batch.
Example 9
The difference from example 6 is that 6Kg of the modified multi-walled carbon nanotube prepared in preparation example 3 was further added during the stirring reaction of the antibacterial master batch at the time of preparation of the S3 antibacterial master batch.
Example 10
The difference from example 9 is that the mass of the modified multi-walled carbon nanotube produced in production example 4 is replaced with the modified multi-walled carbon nanotube produced in production example 4.
Example 11
The difference from example 9 is that the mass of the modified multi-walled carbon nanotube produced in production example 5 is replaced with the mass of the modified multi-walled carbon nanotube produced in production example 5.
Example 12
The difference from example 11 is that 1Kg of blueberry leaf extract was also added during the stirring reaction of the antibacterial masterbatch at the time of S3 antibacterial masterbatch preparation.
Example 13
The difference from example 11 is that 2Kg of blueberry leaf extract was also added during the stirring reaction of the antibacterial masterbatch at the time of S3 antibacterial masterbatch preparation.
Example 14
The difference from example 11 is that 1.5Kg of blueberry leaf extract was also added during the stirring reaction of the antibacterial masterbatch at the time of S3 antibacterial masterbatch preparation.
Example 15
The difference from example 14 is that 2Kg of dodecyldimethylamine oxide was also added during the stirring reaction of the antibacterial masterbatch at the time of preparation of the S3 antibacterial masterbatch.
Example 16
The difference from example 14 is that 3Kg of dodecyldimethylamine oxide was also added during the stirring reaction of the antibacterial masterbatch at the time of preparation of the S3 antibacterial masterbatch.
Example 17
The difference from example 14 is that 2.5Kg of dodecyldimethylamine oxide was also added during the stirring reaction of the antibacterial masterbatch at the time of preparation of the S3 antibacterial masterbatch.
Comparative example 1
The difference from experiment 3 is that the mass of the macromolecular antibacterial agent is replaced by TiO 2 And (3) particles.
Comparative example 2
The difference from experiment 3 is that the equal mass of the polymeric antibacterial agent is replaced by polyhexamethylene biguanide hydrochloride.
Comparative example 3
The difference from experiment 3 is that the polycarbonate is replaced by an acrylonitrile-butadiene-styrene copolymer of equal mass.
Comparative example 4
The difference from experiment 3 is that no silica was added in the S3 antimicrobial masterbatch preparation.
Performance test:
the sheets of examples 1 to 17 and comparative examples 1 to 4 were subjected to tensile properties by the method described in GB/T1040.2-2022 test method for Plastic tensile Property Small specimen, and the results are shown in Table 1.
The sheets of examples 1 to 17 and comparative examples 1 to 4 were subjected to impact property test by the method described in GB/T16420-1996 test method for Plastic impact property Small specimen, and the results obtained are shown in Table 1.
The sheets of examples 1 to 17 and comparative examples 1 to 4 were subjected to bending property test by the method described in GB/T16419-1996 test method for Plastic bending Property Small sample, and the results are shown in Table 1.
Table 1 table of results of tensile properties, impact properties, and bending properties of the sheet material
As can be seen from Table 1
1. The results of the tests of examples 1-3 and comparative example 3 are compared to obtain an antibacterial layer obtained by blending the acrylonitrile-butadiene-styrene copolymer and the polycarbonate, which not only has good structural strength and toughness, but also has excellent impact resistance, and contributes to improving the mechanical strength of the antibacterial plate for cabinets.
2. Comparison of the test results of examples 1 to 3 and comparative example 4 shows that silica can tightly bond acrylonitrile-butadiene-styrene copolymer and polycarbonate, thereby improving tensile strength, flexural strength, impact strength of the antibacterial layer.
3. The comparison of the test results of example 3 and examples 4-6 shows that cashew nut shell oil helps to improve the compatibility of the high molecular antibacterial agent with polycarbonate, thereby helping to improve the mechanical properties of the antibacterial layer, and the cashew nut shell oil introduces a rigid gene benzene ring, so that the molecular chain rigidity of the high molecular polymer is increased, and the tensile strength and the bending strength of the antibacterial layer are improved to a certain extent.
4. The comparison of the test results of example 6 and examples 7-9 shows that the multiwall carbon nanotubes have excellent mechanical properties and extremely high structural strength, which is helpful for further improving the tensile strength, impact strength and bending strength of the antibacterial layer.
5. As a result of comparison between the test results of example 9 and examples 10 to 11, the tensile strength, impact strength and bending strength of the antibacterial layer were remarkably improved as the content of the multi-walled carbon nanotubes was increased.
Antibacterial property tests were conducted on the antibacterial panels for cabinets prepared in examples 1 to 17 and comparative examples 1 to 4, respectively.
The prepared plate is cut into a 40mm multiplied by 40mm sample, and experimental microorganisms are escherichia coli and staphylococcus aureus, and the experimental procedures are as follows:
(1) Sterilizing the ethanol-washed sample and the control plate sample at 60 ℃ for 20min;
(2) Diluting the inoculated strain into standard bacterial liquid with the concentration of 105cfu/mL by using PBS liquid, uniformly dripping 0.5mL of bacterial liquid onto the surface of a plate sample after 5h of water boiling, and covering the plate sample with a sterile plastic film.
(3) The sample with the bacterial liquid coated on the surface and the control plate sample are placed into an incubator with the temperature of 35 ℃ and the humidity of 90% for 24 hours of bacterial culture.
(4) The bacteria were counted from the plastic plate and the sterilization rate was calculated by plating (agar culture) in an incubator at 35℃for 48 hours.
Specific test results are shown in table 2 below:
table 2 table of antibacterial property test results of the sheet material
As can be seen from Table 2
1. The test results of examples 1-3 and comparative example 2 are compared to obtain that the 8-bromooctyl methacrylate and the polymerization initiator form a high-molecular antibacterial agent containing a quaternary phosphonium salt structure polymer with good heat resistance, which is not easy to denature or decompose during processing of an antibacterial layer, and can overcome the defect of poor heat stability of the high-molecular antibacterial agent.
2. Comparison of the test results of comparative example 11 and examples 12-14 shows that the blueberry leaf extract can effectively inhibit the generation of microorganisms such as escherichia coli and staphylococcus aureus.
3. The comparison of the test results of comparative example 14 and examples 15 to 17 shows that dodecyldimethylamine oxide has a certain bactericidal performance and mildew-proof effect, and can effectively improve the antibacterial performance of the antibacterial layer.
Antibacterial durability tests were performed on the antibacterial panels for cabinets prepared in examples 1 to 17 and comparative examples 1 to 4, respectively.
The difference from the antibacterial property test experiment is that the experiment procedure (1) is to place the sample and the control board sample at room temperature for 60 days, then to carry out the subsequent implementation procedure, and the rest experiment procedures are the same as the antibacterial property test experiment.
Specific test results are shown in table 3 below:
table 3 table of results of antibacterial durability test of sheet material
From table 3, it can be seen that:
the comparison of the test results of examples 1-3 and comparative example 1 shows that the high molecular antibacterial agent containing quaternary phosphonium salt structure polymer with good heat resistance formed by the methacrylic acid-8-bromooctyl ester and the polymerization initiator is a non-dissolution type antibacterial mechanism, so that the high molecular antibacterial agent cannot migrate out of the base material with time to reduce the antibacterial property of the material, and the problem of poor antibacterial durability caused by dissolution of the inorganic antibacterial agent can be avoided.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. The antibacterial board for the cabinet comprises a base material layer and an antibacterial layer, and is characterized in that the antibacterial layer comprises the following components in parts by weight:
80-140 parts of acrylonitrile-butadiene-styrene copolymer;
10-50 parts of polycarbonate;
10-30 parts of dimethyl sulfoxide;
2-4 parts of silicon dioxide;
2-6 parts of calcium stearate;
10-20 parts of a high molecular antibacterial agent;
the high molecular antibacterial agent comprises 8-bromooctyl methacrylate and a polymerization initiator in a mass ratio of 8-10:1.
2. The antibacterial sheet material for cabinets as set forth in claim 1, wherein: the high molecular antibacterial agent also comprises 2-3 parts by weight of cashew nut shell oil.
3. The antibacterial sheet material for cabinets as set forth in claim 1, wherein: the polymerization initiator is dicumyl peroxide.
4. The antibacterial sheet material for cabinets as set forth in claim 1, wherein: the antibacterial layer also comprises 4-8 parts by weight of modified multiwall carbon nanotubes.
5. The antibacterial board for cabinets as set forth in claim 4, wherein: the preparation process of the modified multiwall carbon nanotube comprises the following steps:
adding 4-10 parts of multi-wall carbon nano tube into 200-400 parts of ethanol water solution with the volume fraction of 85-95% to prepare multi-wall carbon nano tube solution,
then, after the multi-wall carbon nano tube solution is subjected to ultrasonic dispersion for 1-2 hours, 40-70 parts of vinyl trimethoxy silane is added and stirred to obtain a mixed solution; heating the mixed solution in an oil bath at 50-80 ℃ for reaction for 8-10h to obtain a suspension;
washing the suspension with absolute ethanol for 3-5 times, and centrifuging at a centrifugation speed of 1500-2000r/min for 10-20min to obtain precipitate; finally, the sediment is dried in vacuum under the constant temperature condition of 35-55 ℃ to obtain the modified multi-wall carbon nano tube.
6. The antibacterial sheet material for cabinets as set forth in claim 1, wherein: the antibacterial layer also comprises 1-2 parts by weight of blueberry leaf extract.
7. The antibacterial sheet material for cabinets as set forth in claim 1, wherein: the antibacterial layer also comprises 2-3 parts by weight of dodecyl dimethyl amine oxide.
8. A process for producing the antibacterial sheet material for cabinets as defined in any one of claims 1 to 7, comprising the steps of:
s1, substrate layer treatment: degreasing the surface of the plate-shaped member, naturally drying for 24-36h, and coarsening the surface of the plate-shaped member to ensure that the surface roughness of the plate-shaped member is Ra0.1-0.3, thereby obtaining a substrate layer;
s2, preparing a high-molecular antibacterial agent: uniformly mixing 8-bromooctyl methacrylate and a polymerization initiator according to the required weight parts of a formula, then polymerizing at 80-90 ℃ for 1-2 hours to obtain a premix, washing the premix for 3-5 times by tetrahydrofuran, and drying at a constant temperature of 30-40 ℃ for 3-7 hours to obtain the high-molecular antibacterial agent;
s3, preparation of an antibacterial master batch: stirring and kneading the high molecular antibacterial agent, the acrylonitrile-butadiene-styrene copolymer, the polycarbonate, the dimethyl sulfoxide, the silicon dioxide and the calcium stearate prepared by the S2 according to the required weight parts of the formula, wherein the stirring speed is 360-480r/min, the stirring temperature is 210-240 ℃ and the stirring time is 6-10min, so as to obtain an antibacterial master batch;
s4, coating an antibacterial layer: according to the required weight portion of the formula, placing the antibacterial master batch obtained in the step S3 into a spraying device, spraying the antibacterial master batch to the outside of the substrate layer obtained in the step S1 at room temperature, wrapping the substrate layer, and cooling the substrate layer at room temperature for 28-36h to obtain an intermediate product;
s5, soaking and forming: and (3) placing the intermediate product obtained in the step (S4) in deionized water at room temperature for soaking for 20-40 days to obtain the antibacterial board for the cabinet.
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Application publication date: 20231024 |