CN113248860A - Antibacterial universal plastic material and preparation method thereof - Google Patents
Antibacterial universal plastic material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of high polymer materials for preschool education machines, in particular to an antibacterial universal plastic material and a preparation method thereof. The antibacterial general plastic material comprises the following raw materials: the general plastic is used as a main material, and the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant, the dispersing agent and other auxiliaries are added to perform synergistic action, so that the dosage of the composite antibacterial agent is reduced while the antibacterial effect is ensured, and the impact resistance and yellowing resistance of the material are improved. The antibacterial general plastic material is used for production of preschool education machine products, can inhibit breeding of bacteria, and improves the safety factor of the products in the using process.
Description
Technical Field
The invention relates to the technical field of high polymer materials for preschool education machines, in particular to an antibacterial universal plastic material and a preparation method thereof.
Background
The preschool education machine (early education machine) is an education electronic product specially used for promoting the learning interest of children for early education of the children, training the learning ability of the children in all directions, simultaneously setting human-computer interaction, adding the functions of answering first, encouraging answering and intelligently scoring, helping the children to cultivate the learning interest and develop the potential. The early education machine combines a multivariate intelligent education theory, selects theme scenes according to the life experience and psychological characteristics of children, integrates eight fields of English, pinyin literacy, mathematical logic, potential development, natural common sense, parent-child interaction, entertainment, morality and the like into each theme, and has comprehensive knowledge and clear classification; the lovely cartoon is cartoon and vivid, is interesting to study, and is greatly helpful for improving the attention, thinking ability and the like of the infants.
Currently, under the global large background of environmental bacteria microbial infection, the use contact range of products is easy to breed bacteria, and the health of users is harmed. And traditional preschool education machine does not have antibiotic function, and the preschool education machine is in the use, sweat etc. in the hand, and service environment is like more moist etc. all breeds the bacterium easily at the preschool education machine surface in addition, causes adverse effect to children's health. If the nano-silver antibacterial agent is added into the material, in order to ensure good antibacterial effect, the nano-silver antibacterial agent needs to be used in a large amount and at a high cost, and the material is easy to yellow and affects the mechanical properties of the material.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an antibacterial universal plastic material.
The invention also aims to provide a preparation method of the antibacterial general plastic material, which is simple to operate, convenient to control, high in production efficiency, low in production cost and applicable to large-scale production.
The purpose of the invention is realized by the following technical scheme: an antibacterial general plastic material comprises the following raw materials in parts by weight:
the antibacterial general plastic material disclosed by the invention takes general plastic as a main material, and is added with the organic silicon modified copolymer, the impact modifier, the compound antibacterial agent, the antioxidant, the dispersing agent and other auxiliaries to perform a synergistic effect, so that the dosage of the compound antibacterial agent is reduced while the antibacterial effect is ensured, and the impact resistance and the yellowing resistance of the material are improved. The antibacterial general plastic material is used for production of preschool education machine products, can inhibit breeding of bacteria, and improves the safety factor of the products in the using process.
Preferably, the general-purpose plastic is at least one of ABS, PP, PE and HIPS.
By adopting the technical scheme, the shell material is suitable for being used as a shell material of a preschool education machine. More preferably, the general purpose plastic is ABS, and the type is selected from PA-757.
Preferably, the impact modifier is at least one of EM500, POE and SBS.
By adopting the technical scheme, the glossiness of the material is not influenced, and the material and the organic silicon modified copolymer have synergistic effect, so that the toughness of the material in the processing and using processes is maintained, and the impact resistance of the material is improved.
Preferably, the preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension at a weight ratio of 2-3:1, mixing at 80-100 deg.C for 6h, filtering to retain solid component, and oven drying at 80-100 deg.C to obtain component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 3-4:1, mixing for 6 hours at the constant temperature of 80-100 ℃, filtering and reserving solid components, and then drying at the temperature of 80-100 ℃ to prepare a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
By adopting the technical scheme, the tetradecyl tributyl quaternary phosphonium salt is long-chain alkane, can be effectively wound and coated on the surface of a microorganism, kills the bacteria by preventing the respiration and glycolysis of the bacteria, and silver ions in the zirconium phosphate silver ion compound can be in contact with-SH \ NH in bacteria or mould cells2The group of \ -COOH, etc. reacts to destroy the metabolism of protein and inhibit the reproduction of bacteria. The diatomite has strong adsorption performance and can be well used as a carrier of a compound of tetradecyl tributyl quaternary phosphonium salt and zirconium phosphate silver ions, so that the tetradecyl tributyl quaternary phosphonium salt is enhancedAnd the adsorption of the zirconium phosphate silver ion compound on the bacteria body can kill the bacteria more effectively. Compared with the traditional nano-silver antibacterial agent, the composite antibacterial agent has better dispersion effect in a system, can achieve better antibacterial effect under the condition of lower dosage, and improves the yellowing problem of the material. Further, the mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 45-55%; the mass concentration of the diatomite-water suspension is 5-6%; the zirconium phosphate SILVER ion compound is at least one of AGS-ZMB6000, HN-TA32Ag, JDGKP-003 and SILVER 350, and has the characteristics of high temperature resistance, long effect duration and the like.
Preferably, the antioxidant is prepared by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide. By adopting the technical scheme, the aging resistance and the dispersibility of the material are improved.
Preferably, the preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) taking 45-65 parts by weight of hexamethylene diisocyanate, 35-60 parts by weight of polyoxypropylene glycol, 6-12 parts by weight of 1, 4-butanediol, 10-15 parts by weight of amino-containing polydimethylsiloxane, 0.1-0.2 part by weight of triethylamine and 60 parts by weight of water for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding into hexamethylene diisocyanate, and stirring at 68-78 ℃ for 3-6h to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
By adopting the technical scheme, after hexamethylene diisocyanate and polyoxypropylene diol react under the action of 1, 4-butanediol, amino-containing polydimethylsiloxane is introduced into polyurethane under the action of triethylamine, so that an organic silicon-polyurethane copolymer with an organic siloxane chain segment is obtained, the impact resistance is improved, the compatibility of the organic silicon-polyurethane copolymer in a system is also improved, and the hexamethylene diisocyanate has a promoting effect on improving the yellowing phenomenon of materials; in addition, the organic silicon modified copolymer and the dispersing agent have synergistic effect, so that the dispersion compatibility of the compound antibacterial agent in a system is promoted, the compound antibacterial agent is promoted to form an antibacterial network, the antibacterial effect is improved, and the using amount of the compound antibacterial agent is reduced. Furthermore, the amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.2-1.0mmol/g and a viscosity of 1-1.5 Pa.s at the temperature of 25 ℃, and the processing of the material is promoted.
The other purpose of the invention is realized by the following technical scheme: the preparation method of the antibacterial general plastic material comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
Preferably, the process conditions of the melt extrusion of the twin-screw extruder are as follows: the temperature of the first zone is 160-fold 180 ℃, the temperature of the second zone is 190-fold 220 ℃, the temperature of the third zone is 190-fold 220 ℃, the temperature of the fourth zone is 190-fold 220 ℃, the temperature of the fifth zone is 190-fold 225 ℃, the temperature of the sixth zone is 190-fold 220 ℃, the temperature of the seventh zone is 190-fold 220 ℃, the temperature of the eighth zone is 190-fold 220 ℃, the temperature of the head is 190-fold 230 ℃, and the rotation speed of the screw is 360-fold 450 rpm.
The invention has the beneficial effects that: the antibacterial general plastic material disclosed by the invention takes general plastic as a main material, and is added with the organic silicon modified copolymer, the impact modifier, the compound antibacterial agent, the antioxidant, the dispersing agent and other auxiliaries to perform a synergistic effect, so that the dosage of the compound antibacterial agent is reduced while the antibacterial effect is ensured, and the impact resistance and the yellowing resistance of the material are improved. The antibacterial general plastic material is used for production of preschool education machine products, can inhibit breeding of bacteria, and improves the safety factor of the products in the using process.
The preparation method of the antibacterial general plastic material is simple to operate, convenient to control, high in production efficiency, low in production cost and capable of being used for large-scale production.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
An antibacterial general plastic material comprises the following raw materials in parts by weight:
the general plastic is ABS with the model of PA-757.
The impact modifier was EM 500.
The preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension according to the weight ratio of 2.5:1, mixing at the constant temperature of 90 ℃ for 6 hours, filtering to retain solid components, and drying at the temperature of 90 ℃ to obtain a component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 3.5:1, mixing for 6 hours at the constant temperature of 90 ℃, filtering to retain a solid component, and drying at the temperature of 90 ℃ to prepare a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
The mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 50%; the mass concentration of the diatomite-water suspension is 5.5%; the zirconium phosphate silver ion compound is HN-TA32 Ag.
The antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide.
The preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) taking 55 parts by weight of hexamethylene diisocyanate, 48 parts by weight of polyoxypropylene glycol, 9 parts by weight of 1, 4-butanediol, 12 parts by weight of amino-containing polydimethylsiloxane, 0.15 part by weight of triethylamine and 60 parts by weight of water for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding the mixture into hexamethylene diisocyanate, and stirring the mixture at 73 ℃ for 4 to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
The amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.8mmol/g and a viscosity of 1.2 Pa.s at a temperature of 25 ℃.
The preparation method of the antibacterial general plastic material comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
The process conditions of the melt extrusion of the double-screw extruder are as follows: the first zone temperature was 170 ℃, the second zone temperature was 200 ℃, the third zone temperature was 210 ℃, the fourth zone temperature was 210 ℃, the fifth zone temperature was 220 ℃, the sixth zone temperature was 200 ℃, the seventh zone temperature was 200 ℃, the eighth zone temperature was 200 ℃, the head temperature was 210 ℃, and the screw speed was 400 rpm.
Example 2
An antibacterial general plastic material comprises the following raw materials in parts by weight:
the general plastic is ABS with the model of PA-757.
The impact modifier was EM 500.
The preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension according to the weight ratio of 2:1, mixing at the constant temperature of 80 ℃ for 6 hours, filtering to retain solid components, and drying at the temperature of 80 ℃ to obtain a component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 3:1, mixing for 6 hours at the constant temperature of 80 ℃, filtering and reserving a solid component, and then drying at the temperature of 80 ℃ to prepare a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
The mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 45%; the mass concentration of the diatomite-water suspension is 5%; the zirconium phosphate silver ion compound is JDGKP-003.
The antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide.
The preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) 45 parts of hexamethylene diisocyanate, 35 parts of polyoxypropylene glycol, 6 parts of 1, 4-butanediol, 10 parts of amino-containing polydimethylsiloxane, 0.1 part of triethylamine and 60 parts of water are taken according to parts by weight for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding the mixture into hexamethylene diisocyanate, and stirring the mixture for 6 hours at the temperature of 68 ℃ to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
The amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.8mmol/g and a viscosity of 1.2 Pa.s at a temperature of 25 ℃.
The preparation method of the antibacterial general plastic material comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
The process conditions of the melt extrusion of the double-screw extruder are as follows: the first zone temperature was 170 ℃, the second zone temperature was 190 ℃, the third zone temperature was 190 ℃, the fourth zone temperature was 190 ℃, the fifth zone temperature was 200 ℃, the sixth zone temperature was 190 ℃, the seventh zone temperature was 200 ℃, the eighth zone temperature was 190 ℃, the head temperature was 190 ℃ and the screw speed was 400 rpm.
Example 3
An antibacterial general plastic material comprises the following raw materials in parts by weight:
the general plastic is ABS with the model of PA-757.
The impact modifier was EM 500.
The preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension according to the weight ratio of 3:1, mixing at the constant temperature of 100 ℃ for 6 hours, filtering to retain solid components, and drying at the temperature of 100 ℃ to obtain a component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 4:1, mixing for 6 hours at the constant temperature of 100 ℃, filtering and retaining the solid component, and then drying at the temperature of 100 ℃ to obtain a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
The mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 55%; the mass concentration of the diatomite-water suspension is 6%; the zirconium phosphate SILVER ion compound is SILVER 350.
The antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide.
The preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) 65 parts of hexamethylene diisocyanate, 60 parts of polyoxypropylene glycol, 12 parts of 1, 4-butanediol, 15 parts of amino-containing polydimethylsiloxane, 0.2 part of triethylamine and 60 parts of water are taken according to parts by weight for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding the mixture into hexamethylene diisocyanate, and stirring the mixture for 3 hours at the temperature of 78 ℃ to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
The amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.8mmol/g and a viscosity of 1.2 Pa.s at a temperature of 25 ℃.
The preparation method of the antibacterial general plastic material comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
The process conditions of the melt extrusion of the double-screw extruder are as follows: the first zone temperature was 180 ℃, the second zone temperature was 220 ℃, the third zone temperature was 220 ℃, the fourth zone temperature was 220 ℃, the fifth zone temperature was 225 ℃, the sixth zone temperature was 220 ℃, the seventh zone temperature was 220 ℃, the eighth zone temperature was 220 ℃, the head temperature was 230 ℃ and the screw speed was 400 rpm.
Example 4
An antibacterial general plastic material comprises the following raw materials in parts by weight:
the general plastic is ABS with the model of PA-757.
The impact modifier was EM 500.
The preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension according to the weight ratio of 2:1, mixing at the constant temperature of 80 ℃ for 6 hours, filtering to retain solid components, and drying at the temperature of 100 ℃ to obtain a component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 3:1, mixing for 6 hours at the constant temperature of 100 ℃, filtering and reserving a solid component, and then drying at the temperature of 80 ℃ to prepare a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
The mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 48 percent; the mass concentration of the diatomite-water suspension is 5.2%; the zirconium phosphate silver ion compound is formed by mixing HN-TA32Ag and JDGKP-003 in a weight ratio of 1: 1.
The antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide.
The preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) taking 60 parts by weight of hexamethylene diisocyanate, 55 parts by weight of polyoxypropylene glycol, 10 parts by weight of 1, 4-butanediol, 12 parts by weight of amino-containing polydimethylsiloxane, 0.18 part by weight of triethylamine and 60 parts by weight of water for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding the mixture into hexamethylene diisocyanate, and stirring for 4 hours at the temperature of 75 ℃ to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
The amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.8mmol/g and a viscosity of 1.2 Pa.s at a temperature of 25 ℃.
The preparation method of the antibacterial general plastic material comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
The process conditions of the melt extrusion of the double-screw extruder are as follows: the first zone temperature was 165 ℃, the second zone temperature was 195 ℃, the third zone temperature was 200 ℃, the fourth zone temperature was 200 ℃, the fifth zone temperature was 195 ℃, the sixth zone temperature was 220 ℃, the seventh zone temperature was 220 ℃, the eighth zone temperature was 190 ℃, the head temperature was 210 ℃ and the screw speed was 400 rpm.
Comparative example 1
This comparative example differs from example 1 in that:
the compound antibacterial agent does not contain the component A.
Comparative example 2
This comparative example differs from example 1 in that:
the compound antibacterial agent does not contain a component B.
Comparative example 3
This comparative example differs from example 1 in that:
the composite antibacterial agent is replaced by zirconium phosphate silver ion composite HN-TA32 Ag.
Comparative example 4
This comparative example differs from example 1 in that:
the silicone modified copolymer was replaced with polyurethane resin PU 2509T.
Comparative example 5
This comparative example differs from example 1 in that:
the antibacterial general plastic material does not contain organic silicon modified copolymer.
Example 5
The antibacterial general-purpose plastic materials of examples 1 to 4 and comparative examples 1 to 5 were tested for tensile strength, notched impact strength, antibacterial property and yellowing resistance by the following test methods:
tensile strength: test according to ISO 527, test speed: 50mm/min in MPa;
notched izod impact strength: measured according to ISO 180, pendulum energy 2.75J, in kJ/m2；
And (3) antibacterial property: according to the detection basis and the method, according to the experimental method for the antibacterial performance of the surface of the plastic GB/T21402-;
yellowing resistance: according to the provisions of GB/T2409-1980 test method for yellow index of plastics, the sample form: placing the wafer and D100mm in a HZ-3017 type bulb type yellowing resistance experiment box, and irradiating for 24h under a 300W ultraviolet lamp, wherein the distance between the sample and the bulb is 25cm, and the temperature in the exposure box is about 60 ℃. And (5) taking out the sample for cooling for more than 10min after the experimental time is up, and calculating the change delta YI of the yellow index of the sample.
The test results are shown in table 1 below:
as shown in the above table 1, the general plastic is used as the main material, and the specific organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant, the dispersing agent and other assistants are added for synergistic action, so that the antibacterial effect is ensured, the dosage of the composite antibacterial agent is reduced, and the impact resistance and the yellowing resistance of the material are improved. The antibacterial general plastic material is used for production of preschool education machine products, can inhibit breeding of bacteria, and improves the safety factor of the products in the using process. Compared with comparative examples 1-3, example 1, which uses a specific composite antimicrobial, has a greater promoting effect on tensile strength, impact strength, antimicrobial properties, and yellowing resistance. Compared with comparative examples 4-5, example 1 has a larger promotion effect on tensile strength and impact strength by using a specific organosilicon modified copolymer, and also has certain improvement on antibacterial property and yellowing resistance.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. The antibacterial general plastic material is characterized by comprising the following raw materials in parts by weight:
2. the antimicrobial versatile plastic material of claim 1, further comprising: the general plastic is at least one of ABS, PP, PE and HIPS.
3. The antimicrobial versatile plastic material of claim 1, further comprising: the impact modifier is at least one of EM500, POE and SBS.
4. The antimicrobial versatile plastic material of claim 1, further comprising: the preparation method of the compound antibacterial agent comprises the following steps:
mixing tetradecyl tributyl phosphonium salt solution and diatomite-water suspension at a weight ratio of 2-3:1, mixing at 80-100 deg.C for 6h, filtering to retain solid component, and oven drying at 80-100 deg.C to obtain component A;
mixing the zirconium phosphate silver ion compound and the diatomite-water suspension according to the weight ratio of 3-4:1, mixing for 6 hours at the constant temperature of 80-100 ℃, filtering and reserving solid components, and then drying at the temperature of 80-100 ℃ to prepare a component B;
mixing the component A and the component B according to the weight ratio of 1:1, and mixing to obtain the compound antibacterial agent.
5. The antimicrobial versatile plastic material of claim 4, further comprising: the mass concentration of the tetradecyl tributyl quaternary phosphonium salt solution is 45-55%; the mass concentration of the diatomite-water suspension is 5-6%; the zirconium phosphate SILVER ion compound is at least one of AGS-ZMB6000, HN-TA32Ag, JDGKP-003 and SILVER 350.
6. The antimicrobial versatile plastic material of claim 1, further comprising: the antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1: 1; the dispersing agent is N, N' -ethylene bis stearamide.
7. The antimicrobial versatile plastic material of claim 1, further comprising: the preparation method of the organic silicon modified copolymer comprises the following steps:
(C1) taking 45-65 parts by weight of hexamethylene diisocyanate, 35-60 parts by weight of polyoxypropylene glycol, 6-12 parts by weight of 1, 4-butanediol, 10-15 parts by weight of amino-containing polydimethylsiloxane, 0.1-0.2 part by weight of triethylamine and 60 parts by weight of water for later use;
(C2) mixing 1, 4-butanediol and polyoxypropylene glycol, adding into hexamethylene diisocyanate, and stirring at 68-78 ℃ for 3-6h to obtain a prepolymer;
(C3) adding triethylamine, amino-containing polydimethylsiloxane and the prepolymer into water at the temperature of 50 ℃, then shearing and emulsifying at the rotating speed of 3000rpm, and spray drying to obtain the organic silicon modified copolymer.
8. The antimicrobial versatile plastic material of claim 7, wherein: the amino-containing polydimethylsiloxane is aminopropyl terminated polydimethylsiloxane with an amino value of 0.2-1.0mmol/g and a viscosity of 1-1.5 Pa.s at the temperature of 25 ℃.
9. A method for preparing an antibacterial versatile plastic material according to any of claims 1-8, characterized in that: the method comprises the following steps:
(Q1), taking general plastic, organic silicon modified copolymer, impact modifier, compound antibacterial agent, antioxidant and dispersant by weight for later use;
(Q2), mixing the general plastic, the organic silicon modified copolymer, the impact modifier, the composite antibacterial agent, the antioxidant and the dispersing agent, and then melting, extruding and granulating by a double-screw extruder to obtain the antibacterial general plastic material.
10. The method for preparing an antibacterial general plastic material as claimed in claim 9, wherein: the process conditions of the melt extrusion of the double-screw extruder are as follows: the temperature of the first zone is 160-fold 180 ℃, the temperature of the second zone is 190-fold 220 ℃, the temperature of the third zone is 190-fold 220 ℃, the temperature of the fourth zone is 190-fold 220 ℃, the temperature of the fifth zone is 190-fold 225 ℃, the temperature of the sixth zone is 190-fold 220 ℃, the temperature of the seventh zone is 190-fold 220 ℃, the temperature of the eighth zone is 190-fold 220 ℃, the temperature of the head is 190-fold 230 ℃, and the rotation speed of the screw is 360-fold 450 rpm.
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| CN116285053A (en) * | 2022-11-23 | 2023-06-23 | 宁波金雨科技实业有限公司 | Antibacterial packaging material for daily necessities replacement and application thereof |
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