CN112876833A - Spraying-free high-gloss antibacterial material and preparation method thereof - Google Patents
Spraying-free high-gloss antibacterial material and preparation method thereof Download PDFInfo
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- CN112876833A CN112876833A CN202110259236.7A CN202110259236A CN112876833A CN 112876833 A CN112876833 A CN 112876833A CN 202110259236 A CN202110259236 A CN 202110259236A CN 112876833 A CN112876833 A CN 112876833A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 150
- 239000000463 material Substances 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000002994 raw material Substances 0.000 claims abstract description 47
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 40
- 239000004417 polycarbonate Substances 0.000 claims abstract description 34
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 33
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 33
- 239000011787 zinc oxide Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 27
- 239000000314 lubricant Substances 0.000 claims abstract description 27
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 24
- 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 23
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims abstract description 23
- 239000000049 pigment Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 12
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 claims description 7
- 229920000147 Styrene maleic anhydride Polymers 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 229920005604 random copolymer Polymers 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 9
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003242 anti bacterial agent Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229920007019 PC/ABS Polymers 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
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- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- MSFSPUZXLOGKHJ-UHFFFAOYSA-N Muraminsaeure Natural products OC(=O)C(C)OC1C(N)C(O)OC(CO)C1O MSFSPUZXLOGKHJ-UHFFFAOYSA-N 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 108010013639 Peptidoglycan Proteins 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229920006008 lipopolysaccharide Polymers 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
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- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a spraying-free high-gloss antibacterial material and a preparation method thereof, belonging to the technical field of high polymer materials, and the spraying-free high-gloss antibacterial material is prepared from the following raw materials in parts by weight: 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, 1-2 parts of antibacterial master batch, 1-3 parts of compatilizer, 1-2 parts of lubricant, 0.1-0.4 part of antioxidant and 1-2 parts of pigment; the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%. According to the spray-free antibacterial material provided by the invention, the antibacterial component is added into the material system in the form of master batch raw material, the antibacterial component can be uniformly dispersed into the system with a small addition amount, and the nano zinc oxide is used as the antibacterial component, so that the material has more excellent self-cleaning property, antibacterial property and glossiness.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a spraying-free high-gloss antibacterial material and a preparation method thereof.
Background
When the existing spray-free PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) material is used for parts such as automobile interior handles, decorative strips and the like, most of the adopted common materials are common materials which are prepared by directly blending effect pigments such as metal aluminum strips, aluminum powder, pearl powder and the like with matrix resin and then extruding and granulating the mixture by a double screw, and the common materials do not have any antibacterial function after being injection molded into products, and parts used for automobile interiors are high-frequency contact parts of passengers, so that more bacteria are easily gathered in the materials to cause cross infection.
At present, ultraviolet irradiation or spraying of alcohol, sodium hypochlorite, hydrogen peroxide and the like is mostly adopted to sterilize automobile interior parts, but the methods all need repeated operation, are not environment-friendly, are easy to accelerate the aging of the parts, and lead to the reduction of the service life. Therefore, the development of plastic materials with self-antibacterial function is a hot spot of research of researchers. The plastic material with the self-antibacterial function still faces higher preparation cost, for example, the invention patent with the publication number of CN103980653A discloses 'a high-strength antibacterial plastic bottle cap and a manufacturing process thereof', wherein the antibacterial function is realized by adding a silver-loaded inorganic antibacterial agent, but the proportion of the added silver-loaded inorganic antibacterial agent is higher (75-85 parts by weight of the silver-loaded inorganic antibacterial agent and 90-110 parts by weight of ABS), the processing process is easy to agglomerate, the oxidation discoloration phenomenon is serious, the color effect of the spraying-free material is influenced, and the spraying-free plastic bottle cap is only used for a small-volume material of the bottle cap, and the large-scale production and application of the spraying-free material for the automotive interior are difficult to realize; although the invention patent with the publication number of CN106243670A discloses an antibacterial PC/ABS alloy material, wherein the added inorganic antibacterial agent is only 1-5 parts (55-65 parts of PC resin and 35-45 parts of ABS resin), the invention patent and the CN103980653A patent both add the inorganic antibacterial agent directly and independently, and have poor compatibility with a system, poor glossiness and high surface roughness of products produced by injection molding, dirt is easy to gather on the surfaces of the products, and the antibacterial property of the products is still difficult to effectively improve.
Therefore, it is still a difficult problem in the prior art to provide a spray-free high-gloss antibacterial material with an antibacterial function.
Disclosure of Invention
The invention aims to provide a spraying-free high-gloss antibacterial material and a preparation method thereof. The material provided by the invention has high surface glossiness and excellent self-cleaning property and antibacterial property.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a spraying-free high-gloss antibacterial material which is prepared from the following raw materials in parts by weight: 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, 1-2 parts of antibacterial master batch, 1-3 parts of compatilizer, 1-2 parts of lubricant, 0.1-0.4 part of antioxidant and 1-2 parts of pigment; the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%.
Preferably, the particle size of the nano zinc oxide is 1-10 nm.
Preferably, the compatibilizer comprises a random copolymer of styrene-maleic anhydride.
Preferably, the lubricant comprises ethylene bis stearamide.
Preferably, the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant.
The invention also provides a preparation method of the spray-free high-gloss antibacterial material, which comprises the following steps:
(1) firstly, premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment, and then adding polycarbonate and acrylonitrile-butadiene-styrene for blending to obtain a mixed raw material;
(2) and (3) extruding and molding the mixed raw material obtained in the step (1) to obtain the spraying-free high-gloss antibacterial material.
Preferably, the rotation speed of the premixing in the step (1) is 20-35 r/min, and the time of the premixing is 1-3 min.
Preferably, the rotation speed of blending in the step (2) is 130-160 r/min, and the blending time is 5-8 min.
Preferably, the extrusion molding temperature in the step (2) is 220-260 ℃.
Preferably, the rotating speed of the main machine during extrusion molding in the step (2) is 300-400 r/min.
The invention provides a spraying-free antibacterial material which is prepared from the following raw materials in parts by weight: 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, 1-2 parts of antibacterial master batch, 1-3 parts of compatilizer, 1-2 parts of lubricant, 0.1-0.4 part of antioxidant and 1-2 parts of pigment; the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%. According to the spray-free antibacterial material provided by the invention, the antibacterial component is added into the material system in the form of the master batch raw material, and can be uniformly dispersed into the system under the condition of less addition amount of the antibacterial component, so that the aggregation of the antibacterial component is avoided, and a bulge or a pit is formed on the surface of the material, thereby reducing the contamination of stains and effectively improving the self-cleaning property and antibacterial property of the material; moreover, the antibacterial component in the antibacterial master batch adopted by the invention is nano zinc oxide, the antibacterial master batch is in an oxide form, the property is stable, the problem of color change is avoided, and the prepared spraying-free antibacterial material has better color effect and stronger glossiness; meanwhile, the lubricant and the compatilizer are added, so that the mixing uniformity of the raw materials can be improved, the roughness of the surface of the material is reduced, the self-cleaning property and the antibacterial property of the material are further improved, and the surface of the material has higher glossiness. The results of the embodiment show that the spraying-free high-gloss antibacterial material provided by the invention has an antibacterial rate of 91.3-92.0%, and a gloss of 85-87 degrees, which is 2-3 degrees higher than that of a common similar material.
Detailed Description
The invention provides a spraying-free high-gloss antibacterial material which is prepared from the following raw materials in parts by weight: 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, 1-2 parts of antibacterial master batch, 1-3 parts of compatilizer, 1-2 parts of lubricant, 0.1-0.4 part of antioxidant and 1-2 parts of pigment; the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%.
The raw materials for preparing the spray-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, preferably 65-70 parts of polycarbonate, and more preferably 68-70 parts of polycarbonate. The source of the polycarbonate in the present invention is not particularly limited, and a commercially available product known to those skilled in the art may be used. The polycarbonate is used as a main raw material, so that the product has good mechanical property, and can be widely applied in various fields after being subjected to antibacterial modification.
The raw materials for preparing the spraying-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, preferably 23-30 parts of acrylonitrile-butadiene-styrene, and more preferably 25-30 parts of acrylonitrile-butadiene-styrene. The source of acrylonitrile-butadiene-styrene in the present invention is not particularly limited, and commercially available products known to those skilled in the art may be used. According to the invention, the acrylonitrile-butadiene-styrene is added in an auxiliary manner on the basis of taking the polycarbonate as a main raw material, so that the product has better formability, the surface is smoother, the residue of dirt can be reduced, the breeding of bacteria is avoided, the self-cleaning property of the product is improved, and the antibacterial performance is better.
The raw materials for preparing the spraying-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, 1-2 parts of antibacterial master batch, preferably 1.2-2 parts, and more preferably 1.5-2 parts. According to the invention, the antibacterial ingredient is added into the mixed raw material in the form of the antibacterial master batch, so that the dispersibility of the antibacterial ingredient in a system is improved, and the surface of a processed product has better antibacterial performance under the condition of lower addition amount of the antibacterial ingredient.
In the invention, the carrier of the antibacterial master batch is preferably polycarbonate. The invention selects the polycarbonate as the matrix of the antibacterial master batch, is more favorable for the dispersion and the compatibility of the polycarbonate in the spraying-free material which also takes the polycarbonate as the resin matrix, and leads the antibacterial component to be more uniformly mixed in the spraying-free material, thereby fully playing the antibacterial action.
In the invention, the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%, preferably 20-50%, more preferably 30-50%, and most preferably 30-40%. The invention adopts nano zinc oxide as an antibacterial component, the nano zinc oxide can destroy the cell membrane of bacteria, cause the loss of bacterial quality, solidify virus protein, and decompose harmful compounds released from the residual body of the bacteria while sterilizing, thereby having strong killing effect on bacteria, mould and virus, and the nano zinc oxide also has deodorization effect, and can cause the antibacterial material to have better practicability.
In the invention, the particle size of the nano zinc oxide is preferably 1-10 nm, more preferably 3-10 nm, and most preferably 5-10 nm. According to the invention, more zinc atoms can be exposed out through the particle size range with smaller size in the nano-scale particle size, so that the surface of the nano-scale particle size can be charged positively, cell walls (peptidoglycan, teichoic acid or lipopolysaccharide) and cell membranes (phospholipid) on the cell surface are charged negatively, bacteria can be indiscriminately adsorbed on the surface of the spray-free antibacterial material containing nano-zinc oxide according to the principle of charge opposite attraction, and a better antibacterial effect is achieved.
The raw materials for preparing the spray-free high-gloss antibacterial material comprise 1-3 parts of a compatilizer, preferably 1.5-3 parts of the compatilizer, and more preferably 2-3 parts of the compatilizer, wherein the weight part of the polycarbonate is 60-70 parts. The invention can better combine the two polymers of polycarbonate and acrylonitrile-butadiene-styrene into a whole by adding the compatilizer, thereby obtaining a stable blend, and can better combine the antibacterial component in the antibacterial master batch with the polymers, thereby avoiding the stripping of the antibacterial component from the matrix in the use process of the product, and further ensuring the longer antibacterial performance of the product.
In the present invention, the compatibilizer preferably includes a random copolymer of styrene-maleic anhydride. The source of the compatibilizer is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. The invention can make the product have higher density, smoother surface and higher glossiness by preferably using the styrene-maleic anhydride random copolymer as the compatilizer, and can also make the product have higher strength and higher practicability at higher density.
The raw materials for preparing the spraying-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, 1-2 parts of a lubricant, preferably 1.2-2 parts, and more preferably 1.5-2 parts. The invention can reduce the friction resistance of the mixed raw materials in extrusion molding and reduce the friction damage on the surface of the product by adding a small amount of lubricant.
In the present invention, the lubricant preferably comprises ethylene bis stearamide. The source of the lubricant is not particularly limited in the present invention, and a commercially available product known to those skilled in the art may be used. The ethylene bis stearamide is preferably used as a lubricant, so that the surface of the product has good lubricity and is not easy to be stained.
The raw materials for preparing the spraying-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, 0.1-0.4 part of an antioxidant, preferably 0.2-0.4 part, and more preferably 0.3-0.4 part. By adding a small amount of antioxidant, the invention can prevent the mixed raw materials from oxidative decomposition during high-temperature extrusion molding and effectively delay or inhibit the oxidation process of the finished product, thereby preventing the product from aging and prolonging the service life of the product.
In the present invention, the antioxidant is preferably a hindered phenol antioxidant or a phosphite antioxidant. The source of the antioxidant is not particularly limited in the present invention, and a commercially available product known to those skilled in the art may be used.
The raw materials for preparing the spraying-free high-gloss antibacterial material comprise, by weight, 60-70 parts of polycarbonate, 1-2 parts of pigment, preferably 1.2-2 parts of pigment, and more preferably 1.5-2 parts of pigment. The spraying-free antibacterial material has a good color effect by adding the pigment, so that the product has wider applicability.
In the present invention, the pigment is preferably an aluminum powder, an aluminum strip, or a glass-based pearl powder. The pigment of the present invention is not particularly limited in its origin, and commercially available products known to those skilled in the art may be used. The invention can make the color effect of the product have better glossiness by optimizing the pigment types.
According to the spray-free antibacterial material provided by the invention, the antibacterial component is added into the material system in the form of master batch raw material, and can be uniformly dispersed into the system with a small addition amount, so that the agglomeration of the antibacterial component is avoided to form bulges or pits on the surface of the material, the contamination of stains is reduced, and the self-cleaning property and antibacterial property of the material are effectively improved; meanwhile, the lubricant and the compatilizer are added, so that the mixing uniformity of the raw materials can be improved, the roughness of the surface of the material is reduced, the self-cleaning property and the antibacterial property of the material are further improved, and the surface of the material has higher glossiness.
The invention also provides a preparation method of the spray-free high-gloss antibacterial material, which comprises the following steps:
(1) firstly, premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment, and then adding polycarbonate and acrylonitrile-butadiene-styrene for blending to obtain a mixed raw material;
(2) and (3) extruding and molding the mixed raw material obtained in the step (1) to obtain the spraying-free high-gloss antibacterial material.
The invention firstly mixes the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment, and then adds the polycarbonate and the acrylonitrile-butadiene-styrene for blending to obtain the mixed raw material. According to the invention, the raw materials of the components are mixed more uniformly by mixing the raw materials step by step, the inorganic component and the polymer component are combined more tightly, the inorganic component is prevented from falling off in the using process of the product, and the antibacterial effect and the high gloss effect of the spraying-free high-gloss antibacterial material are more durable.
In the invention, the rotation speed of the premixing is preferably 20-35 r/min, more preferably 25-35 r/min, and most preferably 30 r/min; the time for premixing is preferably 1-3 min, more preferably 2-3 min, and most preferably 3 min. The invention can effectively improve the uniform dispersibility of the low-addition raw materials by adjusting the rotating speed and the time of the premixing.
In the invention, the rotation speed of the blending is preferably 130-160 r/min, more preferably 140-160 r/min, and most preferably 150 r/min; the blending time is preferably 5-8 min, more preferably 5-6 min, and most preferably 5 min. The invention is more beneficial to fully mixing the polymer and the raw materials with low addition amount by adjusting the rotation speed and the time of blending, thereby obtaining a uniform blending raw material system.
The invention has no special requirement on the premixing and blending equipment, and the equipment for mixing materials is well known to those skilled in the art.
After the mixed raw materials are obtained, the mixed raw materials are extruded and molded to obtain the spraying-free high-gloss antibacterial material.
In the invention, the extrusion molding temperature is preferably 220-260 ℃, more preferably 230-260 ℃, and most preferably 240-260 ℃. The invention can make the mixed raw material obtain more proper fluidity at the extrusion temperature by controlling the extrusion molding temperature, and avoid the oxidative decomposition of the mixed raw material at high temperature.
In the invention, the rotating speed of the main machine during extrusion molding is preferably 300-400 r/min, more preferably 330-400 r/min, and most preferably 360-400 r/min. The invention can make the product obtain better molding effect by controlling the rotating speed of the extrusion molding main machine.
In the present invention, the extrusion molding apparatus is preferably a twin-screw extruder. The invention can further improve the surface quality of the formed material by selecting the double-screw extruder, so that the surface lubricating property, the self-cleaning property and the antibacterial property are better.
The preparation method of the spray-free high-gloss antibacterial material provided by the invention is more beneficial to obtaining a spray-free product with good formability, smooth product surface, high gloss and good antibacterial performance, and is simple in process, easier to operate, low in cost and more suitable for mass production.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Example 1
The spray-free high-gloss antibacterial material prepared in the embodiment is prepared from the following raw materials: 60 parts of polycarbonate, 31 parts of acrylonitrile-butadiene-styrene, 2 parts of antibacterial master batch, 3 parts of compatilizer, 1.6 parts of compound lubricant, 0.4 part of antioxidant and 2 parts of pigment.
The antibacterial component in the antibacterial master batch is nano zinc oxide, the mass percentage of the nano zinc oxide is 35%, and the particle size of the nano zinc oxide is 10 nm.
The compatibilizer described in this example used a random copolymer of styrene-maleic anhydride.
Ethylene bis stearamide was used as the lubricant in this example.
Hindered phenol antioxidants were used as antioxidants in this example.
The preparation method of the spray-free high-gloss antibacterial material comprises the following steps:
(1) premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment at a speed of 30r/min for 3min, adding polycarbonate and acrylonitrile-butadiene-styrene, and blending at a speed of 150r/min for 5min to obtain a mixed raw material;
(2) and (2) extruding and molding the mixed raw materials obtained in the step (1) in a double-screw extruder at 260 ℃ and the rotating speed of a main machine of 400r/min to obtain the spray-free high-gloss antibacterial material.
Example 2
The spray-free high-gloss antibacterial material prepared in the embodiment is prepared from the following raw materials: 65 parts of polycarbonate, 26 parts of acrylonitrile-butadiene-styrene, 2 parts of antibacterial master batch, 3 parts of compatilizer, 1.6 parts of compound lubricant, 0.4 part of antioxidant and 2 parts of pigment.
The antibacterial component in the antibacterial master batch is nano zinc oxide, the mass percentage of the nano zinc oxide is 35%, and the particle size of the nano zinc oxide is 10 nm.
The compatibilizer described in this example used a random copolymer of styrene-maleic anhydride.
Ethylene bis stearamide was used as the lubricant in this example.
Hindered phenol antioxidants were used as antioxidants in this example.
The preparation method of the spray-free high-gloss antibacterial material comprises the following steps:
(1) premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment at a speed of 30r/min for 3min, adding polycarbonate and acrylonitrile-butadiene-styrene, and blending at a speed of 150r/min for 5min to obtain a mixed raw material;
(2) and (2) extruding and molding the mixed raw materials obtained in the step (1) in a double-screw extruder at 260 ℃ and the rotating speed of a main machine of 400r/min to obtain the spray-free high-gloss antibacterial material.
Example 3
The spray-free high-gloss antibacterial material prepared in the embodiment is prepared from the following raw materials: 70 parts of polycarbonate, 21 parts of acrylonitrile-butadiene-styrene, 2 parts of antibacterial master batch, 3 parts of compatilizer, 1.6 parts of compound lubricant, 0.4 part of antioxidant and 2 parts of pigment.
The antibacterial component in the antibacterial master batch is nano zinc oxide, the mass percentage of the nano zinc oxide is 35%, and the particle size of the nano zinc oxide is 10 nm.
The compatibilizer described in this example used a random copolymer of styrene-maleic anhydride.
Ethylene bis stearamide was used as the lubricant in this example.
Hindered phenol antioxidants were used as antioxidants in this example.
The preparation method of the spray-free high-gloss antibacterial material comprises the following steps:
(1) premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment at a speed of 30r/min for 3min, adding polycarbonate and acrylonitrile-butadiene-styrene, and blending at a speed of 150r/min for 5min to obtain a mixed raw material;
(2) and (2) extruding and molding the mixed raw materials obtained in the step (1) in a double-screw extruder at 260 ℃ and the rotating speed of a main machine of 400r/min to obtain the spray-free high-gloss antibacterial material.
The spraying-free high-gloss antibacterial material obtained in the embodiments 1 to 3 of the invention is subjected to an antibacterial experiment and gloss detection, and specifically comprises the following steps:
1. the antibacterial test is carried out according to the light industry standard QB/T2591-. Through detection, the antibacterial rate of the spray-free high-gloss antibacterial material obtained in the example 1 is 91.3%, the antibacterial rate of the spray-free high-gloss antibacterial material obtained in the example 2 is 92.0%, and the antibacterial rate of the spray-free high-gloss antibacterial material obtained in the example 3 is 91.8%.
2. And (3) detecting the glossiness of the material: after the material was injection molded into gloss plaques, the gloss at 60 degrees was tested with a gloss meter. Through detection, the glossiness of the spray-free high-gloss antibacterial material obtained in the embodiment 1 is 85 degrees, the glossiness of the spray-free high-gloss antibacterial material obtained in the embodiment 2 is 87 degrees, and the glossiness of the spray-free high-gloss antibacterial material obtained in the embodiment 3 is 86 degrees, which is 2-3 degrees higher than that of a common similar material.
In conclusion, the spraying-free high-gloss antibacterial material prepared by the broad technical scheme has good self-cleaning property and antibacterial property, and the surface of the material has higher gloss.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The spraying-free high-gloss antibacterial material is prepared from the following raw materials in parts by weight: 60-70 parts of polycarbonate, 20-30 parts of acrylonitrile-butadiene-styrene, 1-2 parts of antibacterial master batch, 1-3 parts of compatilizer, 1-2 parts of lubricant, 0.1-0.4 part of antioxidant and 1-2 parts of pigment; the antibacterial component in the antibacterial master batch is nano zinc oxide; the mass percentage of the nano zinc oxide in the antibacterial master batch is 10-50%.
2. The spray-free high-gloss antibacterial material according to claim 1, wherein the particle size of the nano zinc oxide is 1-10 nm.
3. The spray-free high-gloss antibacterial material according to claim 1, wherein the compatibilizer comprises a random copolymer of styrene-maleic anhydride.
4. The spray-free high-gloss antibacterial material according to claim 1, wherein the lubricant comprises ethylene bis stearamide.
5. The spray-free antibacterial high-gloss material according to claim 1, wherein the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant.
6. The preparation method of the spray-free high-gloss antibacterial material as claimed in any one of claims 1 to 5, characterized by comprising the following steps:
(1) firstly, premixing the antibacterial master batch, the compatilizer, the lubricant, the antioxidant and the pigment, and then adding polycarbonate and acrylonitrile-butadiene-styrene for blending to obtain a mixed raw material;
(2) and (3) extruding and molding the mixed raw material obtained in the step (1) to obtain the spraying-free high-gloss antibacterial material.
7. The preparation method of the spray-free high-gloss antibacterial material according to claim 6, wherein the rotation speed of the premixing in the step (1) is 20-35 r/min, and the premixing time is 1-3 min.
8. The preparation method of the spray-free high-gloss antibacterial material according to claim 6, wherein the blending in the step (2) is performed at a rotation speed of 130-160 r/min for 5-8 min.
9. The preparation method of the spray-free high-gloss antibacterial material according to claim 6, wherein the extrusion molding temperature in the step (2) is 220-260 ℃.
10. The preparation method of the spray-free high-gloss antibacterial material according to claim 6, wherein the rotation speed of the main machine during extrusion molding in the step (2) is 300-400 r/min.
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