CN111892756A - Master batch of antibacterial plastic product, preparation method of master batch and antibacterial garbage can - Google Patents
Master batch of antibacterial plastic product, preparation method of master batch and antibacterial garbage can Download PDFInfo
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- CN111892756A CN111892756A CN202010596157.0A CN202010596157A CN111892756A CN 111892756 A CN111892756 A CN 111892756A CN 202010596157 A CN202010596157 A CN 202010596157A CN 111892756 A CN111892756 A CN 111892756A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 76
- 229920003023 plastic Polymers 0.000 title claims abstract description 53
- 239000004033 plastic Substances 0.000 title claims abstract description 53
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000000243 solution Substances 0.000 claims abstract description 29
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 28
- -1 silicon quaternary ammonium salt Chemical class 0.000 claims abstract description 25
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 17
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010457 zeolite Substances 0.000 claims abstract description 17
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 14
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 11
- 239000004814 polyurethane Substances 0.000 claims abstract description 11
- 239000012266 salt solution Substances 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 7
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- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims abstract description 5
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- 238000003756 stirring Methods 0.000 claims description 13
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- 239000011812 mixed powder Substances 0.000 claims description 9
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- 238000001704 evaporation Methods 0.000 claims description 6
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 21
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 8
- 210000002421 cell wall Anatomy 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000011858 nanopowder Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
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- 102000003960 Ligases Human genes 0.000 description 1
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- 241000191938 Micrococcus luteus Species 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
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 108010013639 Peptidoglycan Proteins 0.000 description 1
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- 241000725643 Respiratory syncytial virus Species 0.000 description 1
- 241000187693 Rhodococcus rhodochrous Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
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- C08K2003/2241—Titanium dioxide
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- 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
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- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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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- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/015—Biocides
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a master batch of an antibacterial plastic product prepared by taking a nano antibacterial agent as a component, a preparation method thereof and an antibacterial garbage can, wherein the master batch comprises the following materials in parts by weight: 30 parts of nano silver ion solution, 30 parts of waterborne polyurethane adhesive, 50 parts of nano zeolite powder solution, 30 parts of organic silicon quaternary ammonium salt solution, 10 parts of nano zinc oxide powder, 10 parts of nano titanium dioxide powder, 60 parts of calcium carbonate or light calcium powder, 90 parts of polyethylene solid master batch and 50 parts of deionized water.
Description
Technical Field
The invention belongs to the technical field of antibacterial plastic products, and particularly relates to a master batch of an antibacterial plastic product prepared by taking a nano antibacterial agent as a component, a preparation method of the master batch and an antibacterial garbage can.
Background
Plastic products are widely used in various aspects of people's life, such as plastic barrels, garbage cans, handles of subways and public vehicles, public seat cushions, product packages, plastic shells of household appliances, office and household daily necessities, and the like, and are easy to breed bacteria or become vectors for virus and bacteria transmission. In recent years, with the pursuit of people for healthy life and the requirement of disease prevention, antibacterial materials with antibacterial, sanitary and self-cleaning functions are concerned by people, particularly, plastic related products with the antibacterial materials are gradually valued by people, and particularly, the emergence of new coronary pneumonia in the year puts forward higher requirements on the antibacterial performance of various plastic products. However, most of the existing plastic products have no self-antibacterial function or weak antibacterial function; these plastic products are often used as a medium for the transmission of viruses and bacteria, and seriously harm the life health of people.
At present, some antibacterial plastic products are used in the fields of household appliances, communication equipment, automobile manufacturing and the like, and the nanotechnology plays an important role in the antibacterial plastic products, wherein the nanometer antibacterial agent has ultrafine particle size, so that the contact area with bacteria is increased, the nanometer antibacterial agent can penetrate through the cell wall of the bacteria to enter the cell body, the activity of cell synthetase is damaged, the cells lose division and proliferation capacity and die, and the antibacterial purpose is achieved. The problems of the existing antibacterial plastic products can be solved by adding the nano antibacterial agent into the antibacterial plastic products, the antibacterial plastic is generally composed of nano-scale and micron-scale antibacterial agents and basic resin materials, for example, patent publication No. CN 110272597A discloses an antibacterial plastic particle, and the components are composed of the following components in parts by mass: 20-30 parts of polyvinyl chloride, 10-20 parts of white carbon black, 10-20 parts of polycarbonate, 10-20 parts of polycaprolactone, 1-10 parts of methyl propylene glycol, 1-5 parts of nano titanium dioxide, 1-5 parts of nano silver, 1-5 parts of silica powder, 10-15 parts of pigment and filler, 1-5 parts of coupling agent, 1-5 parts of dispersing agent, 1-5 parts of stabilizer, 1-5 parts of plasticizer and 1-5 parts of antioxidant. The white carbon black, the nano titanium dioxide, the nano silver and the silicon micropowder are added, and the plastic particles prepared by adopting the formula are not easy to breed bacteria, fungi and viruses, have a wide antibacterial spectrum range and can continuously resist bacteria. The antibacterial plastic is mainly obtained by adding a small amount of antibacterial agent into common plastic; however, the coating often has the problems of color change, poor heat resistance, uneven dispersion, poor stability and the like in application, and cannot be normally used; meanwhile, when the relatively popular nano antibacterial agent powder and other antibacterial powder materials are used for preparing the antibacterial master batch, the defects of nonuniform combination and unobvious sterilization capability of the traditional nano silver powder and other powder materials exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the master batch of the antibacterial plastic product, which has the advantages of uniform distribution of the nano antibacterial agent, better sterilization effect, better timeliness, high stability and high antibacterial activity, the preparation method thereof and the antibacterial garbage can.
The object of the invention is achieved by:
the master batch of the antibacterial plastic product is characterized by comprising the following materials in parts by weight: 30 parts of nano silver ion solution, 30 parts of waterborne polyurethane adhesive, 50 parts of nano zeolite powder solution, 30 parts of organic silicon quaternary ammonium salt solution, 10 parts of nano zinc oxide powder, 10 parts of nano titanium dioxide powder, 60 parts of calcium carbonate or light calcium powder, 90 parts of polyethylene solid master batch and 50 parts of deionized water.
The concentration of the nano silver ion solution is 10000 ppm.
The solid content of the waterborne polyurethane adhesive is 35-50% calculated according to weight percentage.
The nano zeolite powder solution is 20-80 nm, and the concentration is 6000 ppm.
The concentration of the silicone quaternary ammonium salt solution was 42%.
The nano titanium dioxide powder is 20-80 nm nano titanium dioxide powder with the purity of more than 95%.
The calcium carbonate or light calcium powder is 500-1000 meshes of calcium carbonate or light calcium powder.
An antibacterial garbage can is prepared by adding 3% of the master batch of an antibacterial plastic product into an LDPE plastic product and performing injection molding.
The preparation method of the master batch of the antibacterial plastic product comprises the following preparation steps:
step 1), feeding the nano silver ion solution and the waterborne polyurethane adhesive into a dispersion machine, and dispersing for 5 minutes at the rotating speed of 500 revolutions per hour to obtain component A liquid;
step 2), feeding the nano zeolite powder solution and the organosilicon quaternary ammonium salt solution into a dispersion machine, and dispersing for 5 minutes at the rotating speed of 500 revolutions per hour to obtain component B liquid;
step 3), uniformly mixing the obtained component A liquid and component B liquid, adding deionized water, sending into a dispersion machine, and dispersing at the rotating speed of 800 revolutions per hour to obtain a liquid component C;
step 4), feeding the nano zinc oxide powder, the nano titanium dioxide powder and the calcium carbonate or light calcium powder into a stirrer for powder mixing and stirring, wherein the stirrer is used for stirring for 5 minutes at 800 revolutions per hour and 500 plus materials to obtain a mixed powder component D;
step 5), placing the mixed powder D into a rolling stirrer for rapid stirring again, simultaneously spraying and combining the liquid component C aiming at the mixed powder component D, and completely spraying the component C within 5-10 minutes by using a mist spray head at the machine rotation speed of 200 plus materials per hour at 300 revolutions to obtain a mixed component E;
step 6), taking out the mixed component E, and putting the mixed component E into low-temperature baking equipment for water evaporation, wherein the baking temperature is 50 ℃;
step 7), crushing the component E after water evaporation into powder;
step 8), mixing the powdery substance crushed in the step 7) with the polyethylene solid master batch, placing the mixture into a stirrer, adding lubricating oil or oily dispersant accounting for 5-10 per mill of the weight of the mixture obtained in the step 8, and stirring and adding the mixture at the rotation speed of 200-300 revolutions per hour to obtain a dry material F of a mixed component;
step 9), putting the dry material F of the mixed components into a single-screw or double-screw extruder for extrusion;
and step 10), cutting the extruded material obtained in the step 10) into granules by a granulator, wherein the grain size is 0.1-0.2 cm in diameter and 0.2-0.5 cm in length, and thus obtaining the master batch of the antibacterial plastic product.
The invention has the following positive effects:
compared with the antibacterial master batch product prepared by using the more popular nano silver powder and other antibacterial powder materials, the preparation method disclosed by the invention combines liquid preparation and powder preparation, so that the nano powder and the nano solution are fully combined and mutually bonded and permeated into a whole, the sterilization effect is more excellent, the timeliness is better, the antibacterial powder and the liquid materials are selected from cationic inorganic substances and organic substances and are mostly combined by nano materials with antibacterial and bactericidal functions, and the production problems of nonuniform combination, unobvious sterilization capability and the production problem in the preparation of master batch addition finished products of the traditional nano silver powder and other powder materials are avoided. The nano silver antibacterial agent and other nano antibacterial agents are fully combined and evenly blended with plastic resin to prepare a plastic product which becomes the functional plastic with broad antibacterial spectrum, long-acting effect, safety and stability.
The invention can carry out broad-spectrum sterilization with long effect and durability, has strong bacteriostatic ability, no toxic or side effect, wide application range and convenient use, is suitable for families and public places including application in damp and hot environments, has long effect and durability in bacteriostatic and bactericidal action, and is suitable for various application scenes, in particular to plastic products used in families and public places with large stream density.
The action mechanism of the nano silver ions is that the silver ions are activated to generate active oxygen (OH-), and bacteria and viruses are decomposed by oxidation; the adopted nano silver has obvious antibacterial action, and the particles can directly enter the thalli to be combined with oxygen metabolic enzyme, so that the thalli are suffocated; and can react with the peptidoglycan exposed on the bacterial cell wall to generate a plastic compound, so as to prevent the activity of pathogenic bacteria and kill the pathogenic bacteria; silver can also bind to DNA of pathogens, inhibiting DNA replication, thereby causing pathogen inactivation; silver ion is the most active one of metal ions, and is activated to generate active oxygen (OH-) under the conditions of light and moisture (certain moisture is contained in the air); the safety is equal to active oxygen (OH-) of ions in the nature, has the oxidative decomposition capacity which is several times of that of ultraviolet rays and ozone, and has the effect of killing and decomposing bacteria and viruses; in recent years, the sterilization and deodorization technology is adopted in plastic products in household electrical appliances such as Japanese Shapu and Panasonic.
The action mechanism of the antibacterial agents such as the nano zinc oxide powder, the nano titanium dioxide powder and the like is that when ions such as zinc, titanium dioxide and the like are attracted by negative charges to the inside of a bacterium body, the antibacterial agents have a sanitary self-cleaning function, natural metal zinc and titanium dioxide ions are nanocrystallized to ensure that the antibacterial agents have an antibacterial effect, the outer layer of the antibacterial agents can form a chelated molecular structure and is combined with the outer layer of the bacterium to cause various mechanisms of a cell membrane to be lost, when the zinc and titanium dioxide ions with positive charges are contacted with the bacterium, the cell wall of the bacterium is mostly with negative charges, and tensile force is generated under the condition of unbalanced positive and negative ion quantities, so that the cell wall of the bacterium is pulled to be broken to generate holes, and thiol groups (-SH), hydroxyl groups and the like in the bacterium cannot be generated (combined) to form the cell wall to influence the propagation, when the, the method has the advantages that bacterial cells cannot be normally metabolized due to the deterioration of the Chi white matter until a bacterial death well completely disappears, the propagation of bacteria is effectively avoided, the antibacterial property of the antibacterial material can be synchronous with the service life of a product, the antibacterial property of the nano zinc oxide powder and the nano titanium dioxide powder is high, the aging is long, the cost is reasonable, and the antibacterial material has strong inhibiting effect on harmful microorganisms such as escherichia coli, staphylococcus aureus, bacillus subtilis, sarcina lutea, rhodococcus rhodochrous and the like; the color stabilizer can effectively prevent the aging of plastic products, can improve the sanitary safety of the plastic products, has efficient broad-spectrum antibacterial and mildew-proof effects, is insensitive to ultraviolet radiation, does not corrode the plastic products, does not generate electric corrosion, does not volatilize, does not react with most substances (except organic matters and inorganic matters and compounds capable of reducing silver), can be suitable for the fields of plastic products such as refrigerators, washing machines, air conditioners, water dispensers, telephones, textiles, shoes, floors, coatings, paints, pipes, ceramics, building materials, automobiles and the like, and has excellent color stability, safety and reliability.
The nano zeolite powder has good adsorbability and ion exchange property, is used as a good carrier of the antibacterial agents, is well mixed by grinding, can realize broad-spectrum antibacterial action by matching and cooperating the nano antibacterial agents and attaching the nano antibacterial agents to the zeolite with good adsorbability, has strong compatibility and can effectively kill bacteria, fungi, viruses, algae and the like.
The nano silver ion solution and the aqueous polyurethane adhesive are dispersed, then mixed and dispersed with the nano zeolite powder solution and the organic silicon quaternary ammonium salt solution, and simultaneously spray-combined with the powder formed by stirring and mixing nano zinc oxide powder, nano titanium dioxide powder, calcium carbonate or light calcium powder in a mist form, namely liquid preparation and powder preparation are combined, so that the nano powder and the nano solution are fully combined and mutually bonded and penetrated into a whole, the uniform combination of the nano powder and the nano solution is ensured, and the sterilization capability is highlighted.
The antibacterial master batch is added into an LDPE plastic product according to the proportion of 3 percent, the obtained plastic product is an antibacterial product, and the antibacterial rate of the product after detection on pathogenic bacteria and viruses such as escherichia coli, staphylococcus aureus, candida albicans, respiratory syncytial virus, H1N1, H7N9 avian influenza and the like is more than 99 percent. Compared with the antibacterial master batch product prepared by the popular nano silver powder material and other antibacterial powder materials, the antibacterial master batch product prepared by the method disclosed by the invention combines liquid preparation and powder preparation, so that the nano powder material and the nano solution are fully combined and mutually bonded and permeated into a whole, the sterilization effect is excellent, the timeliness is good, the antibacterial powder material and the liquid material are selected from cationic inorganic substances and organic substances, most of the antibacterial powder material and the liquid material are combined by nano materials with antibacterial and sterilization functions, and the production problems of uneven combination, unobvious sterilization capability and the existence of a master batch additive finished product in the preparation of the traditional nano silver powder material and other powder materials are avoided.
The invention also utilizes the characteristics of high temperature resistance and quick sterilization of nano silver ions; the slow antibacterial but wide characteristic of nano zinc ions is utilized; the characteristic of strong long-acting adsorption capacity of the nano zeolite powder is utilized to form a plastic product which utilizes the physical, biological and chemical properties of viruses and bacteria and the positive and negative charges (anions and cations) physical resistance, long-acting and durable chemical property, high temperature resistance, wide application and biological comprehensiveness carried out by the invention, avoids loopholes caused by a great variety of bacteria and viruses and has comprehensive antibacterial property.
After the nano zinc oxide, the nano titanium dioxide powder, the nano silver ion solution and the nano zeolite powder solution are combined and dispersed, and then are uniformly distributed among nano ions, the combination of the nano silver ions and the nano zinc ions makes up the defect that the nano silver ions can not kill and inhibit bacteria quickly, the combination of the nano silver ions and the nano zinc ions can not kill and inhibit bacteria quickly, the combination of the nano zinc ions and the nano silver ions of the nano zinc ions and the nano titanium dioxide of the nano silver ions of the nano zinc ions and the nano silver ions of the nano zinc ions and the nano titanium dioxide of the nano silver ions of the nano zinc ions and the nano.
Compared with other common antibacterial products such as a nano-silver system (with the antibacterial effect of 97-99 percent) and a quaternary ammonium salt system (with the antibacterial effect of 90-95 percent) in the market, the material components and the preparation method used by the invention have the advantages of comprehensive antibacterial types and strong persistence, the detection result of the invention is 99 percent of antibacterial effect, any one of the components of the nano-silver antibacterial agent, the nano-zinc antibacterial agent, the nano zeolite powder and the nano titanium dioxide is optionally removed, and the experimental detection shows that the 99.9 percent of antibacterial effect of the invention can be obviously reduced.
Detailed Description
Example 1: the master batch of the antibacterial plastic product comprises the following materials in weight grams: 30 kg of nano silver ion solution, 30 kg of aqueous polyurethane adhesive, 50 kg of nano zeolite powder solution, 30 kg of organic silicon quaternary ammonium salt solution, 10 kg of nano zinc oxide powder, 10 kg of nano titanium dioxide powder, 60 kg of calcium carbonate or light calcium powder, 90 kg of polyethylene solid master batch and 50 kg of deionized water.
Wherein the concentration of the nano silver ion solution is 10000 ppm. The solid content of the waterborne polyurethane adhesive is 35-50% calculated according to weight percentage. The nano zeolite powder solution is 20-80 nm. The concentration of the silicone quaternary ammonium salt solution was 42%. The nano titanium dioxide powder is 20-80 nm nano titanium dioxide powder with the purity of more than 95%. The calcium carbonate or light calcium powder is 500-1000 meshes of calcium carbonate or light calcium powder.
The preparation method of the master batch of the antibacterial plastic product comprises the following preparation steps:
step 1), feeding the nano silver ion solution and the waterborne polyurethane adhesive into a dispersion machine according to a proportion, and dispersing for 5 minutes at a rotating speed of 500 revolutions per hour to obtain component A liquid;
step 2), feeding the nano zeolite powder solution and the organosilicon quaternary ammonium salt solution into a dispersion machine, and dispersing for 5 minutes at the rotating speed of 500 revolutions per hour to obtain component B liquid;
step 3), uniformly mixing the obtained component A liquid and component B liquid, adding deionized water, sending into a dispersion machine, and dispersing at the rotating speed of 800 revolutions per hour to obtain a liquid component C;
step 4), feeding the nano zinc oxide powder, the nano titanium dioxide powder and the calcium carbonate or light calcium powder into a stirrer for powder mixing and stirring, wherein the stirrer is used for stirring for 5 minutes at 800 revolutions per hour and 500 plus materials to obtain a mixed powder component D;
step 5), placing the mixed powder D into a rolling stirrer for rapid stirring again, simultaneously spraying and combining the liquid component C aiming at the mixed powder component D, and completely spraying the component C within 5-10 minutes by using a mist spray head at the machine rotation speed of 200 plus materials per hour at 300 revolutions to obtain a mixed component E;
step 6), taking out the mixed component E, and putting the mixed component E into low-temperature baking equipment for water evaporation, wherein the baking temperature is 50 ℃;
step 7), crushing the component E after water evaporation into powder;
step 8), mixing the powdery substance crushed in the step 7) with the polyethylene solid master batch, placing the mixture into a stirrer, adding lubricating oil or oily dispersant accounting for 5-10 per mill of the weight of the mixture obtained in the step 8, and stirring and adding the mixture at the rotation speed of 200-300 revolutions per hour to obtain a dry material F of a mixed component;
step 9), putting the dry material F of the mixed components into a single-screw or double-screw extruder for extrusion;
and step 10), cutting the extruded material obtained in the step 10) into granules by a granulator, wherein the grain size is 0.1-0.2 cm in diameter and 0.2-0.5 cm in length, and thus obtaining the master batch of the antibacterial plastic product.
Claims (9)
1. The master batch of the antibacterial plastic product is characterized by comprising the following materials in parts by weight: 30 parts of nano silver ion solution, 30 parts of waterborne polyurethane adhesive, 50 parts of nano zeolite powder solution, 30 parts of organic silicon quaternary ammonium salt solution, 10 parts of nano zinc oxide powder, 10 parts of nano titanium dioxide powder, 60 parts of calcium carbonate or light calcium powder, 90 parts of polyethylene solid master batch and 50 parts of deionized water.
2. A master batch for an antimicrobial plastic article according to claim 1, wherein the concentration of the nano silver ion solution is 10000 ppm.
3. A masterbatch for antimicrobial plastic products according to claim 1, wherein said aqueous polyurethane binder has a solids content of 35% to 50% by weight.
4. The master batch of antibacterial plastic product of claim 1, wherein the nano zeolite powder solution is 20-80 nm nano zeolite powder solution, and the concentration is 6000 ppm.
5. A masterbatch for antimicrobial plastic article according to claim 1 wherein said silicone quaternary ammonium salt solution is present at a concentration of 42%.
6. The master batch for antibacterial plastic products according to claim 1, wherein the nano titanium dioxide powder is 20-80 nm pure with a purity of 95% or more.
7. The master batch for antibacterial plastic products as claimed in claim 1, wherein the calcium carbonate or light calcium powder is 500-1000 mesh calcium carbonate or light calcium powder.
8. The antibacterial garbage can is characterized in that the antibacterial plastic product master batch is added into an LDPE plastic product according to the weight percentage of 3%, and the antibacterial garbage can is formed after injection molding.
9. A process for preparing a masterbatch for an antimicrobial plastic article according to claims 1 to 7, characterized in that it comprises the following steps:
step 1), feeding the nano silver ion solution and the waterborne polyurethane adhesive into a dispersion machine, and dispersing for 5 minutes at the rotating speed of 500 revolutions per hour to obtain component A liquid;
step 2), feeding the nano zeolite powder solution and the organosilicon quaternary ammonium salt solution into a dispersion machine, and dispersing for 5 minutes at the rotating speed of 500 revolutions per hour to obtain component B liquid;
step 3), uniformly mixing the obtained component A liquid and component B liquid, adding deionized water, sending into a dispersion machine, and dispersing at the rotating speed of 800 revolutions per hour to obtain a liquid component C;
step 4), feeding the nano zinc oxide powder, the nano titanium dioxide powder and the calcium carbonate or light calcium powder into a stirrer for powder mixing and stirring, wherein the stirrer is used for stirring for 5 minutes at 800 revolutions per hour and 500 plus materials to obtain a mixed powder component D;
step 5), placing the mixed powder D into a rolling stirrer for rapid stirring again, simultaneously spraying and combining the liquid component C aiming at the mixed powder component D, and completely spraying the component C within 5-10 minutes by using a mist spray head at the machine rotation speed of 200 plus materials per hour at 300 revolutions to obtain a mixed component E;
step 6), taking out the mixed component E, and putting the mixed component E into low-temperature baking equipment for water evaporation, wherein the baking temperature is 50 ℃;
step 7), crushing the component E after water evaporation into powder;
step 8), mixing the powdery substance crushed in the step 7) with the polyethylene solid master batch, placing the mixture into a stirrer, adding lubricating oil or oily dispersant accounting for 5-10 per mill of the weight of the mixture obtained in the step 8, and stirring and adding the mixture at the rotation speed of 200-300 revolutions per hour to obtain a dry material F of a mixed component;
step 9), putting the dry material F of the mixed components into a single-screw or double-screw extruder for extrusion;
and step 10), cutting the extruded material obtained in the step 10) into granules by a granulator, wherein the grain size is 0.1-0.2 cm in diameter and 0.2-0.5 cm in length, and thus obtaining the master batch of the antibacterial plastic product.
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Application publication date: 20201106 |