CN114806013A - Antibacterial polypropylene material and preparation method thereof - Google Patents
Antibacterial polypropylene material and preparation method thereof Download PDFInfo
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- CN114806013A CN114806013A CN202210464348.0A CN202210464348A CN114806013A CN 114806013 A CN114806013 A CN 114806013A CN 202210464348 A CN202210464348 A CN 202210464348A CN 114806013 A CN114806013 A CN 114806013A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 82
- -1 polypropylene Polymers 0.000 title claims abstract description 73
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 72
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 72
- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000945 filler Substances 0.000 claims abstract description 35
- 239000003365 glass fiber Substances 0.000 claims abstract description 33
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002608 ionic liquid Substances 0.000 claims abstract description 21
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 18
- 238000010306 acid treatment Methods 0.000 claims abstract description 14
- 238000002791 soaking Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 33
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical group F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 30
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 20
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229940005740 hexametaphosphate Drugs 0.000 claims description 10
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 5
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims 4
- 239000004599 antimicrobial Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 244000005700 microbiome Species 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 230000002147 killing effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000222122 Candida albicans Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 241000193998 Streptococcus pneumoniae Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229940031000 streptococcus pneumoniae Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
Landscapes
- 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 discloses an antibacterial polypropylene material and a preparation method thereof. The polypropylene material comprises the following raw materials in parts by weight: 100-120 parts of polypropylene, 10-15 parts of glass fiber, 10-15 parts of ionic liquid, 2-5 parts of antibacterial filler and 1-3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler. The polypropylene material of the invention takes polypropylene as a main raw material, the glass fiber is added to improve the strength of the polypropylene, the compatibility between the glass fiber and the polypropylene and between the antibacterial filler and the polypropylene are improved through the ionic liquid, and the integral antibacterial performance of the polypropylene material is improved through the antibacterial filler.
Description
Technical Field
The invention relates to an antibacterial polypropylene material and a preparation method thereof, belonging to the technical field of plastics.
Background
The polypropylene resin is widely applied to the industries of household appliances and automobiles, and has the advantages that the polypropylene resin not only can replace metal and engineering plastics, but also has the characteristics of easy recovery, light weight and relatively low price. These applications require materials with high mechanical properties (stiffness and toughness) and also a desirable gloss level to obtain the aesthetic effect of the article. High-gloss polypropylene is gradually replacing materials such as HIPS (high impact polystyrene), ABS (acrylonitrile butadiene styrene) and the like at present, and is applied to shells of household appliances such as electric cookers, electric kettles, microwave ovens, dust collectors and washing machines and interior trim parts of automobiles.
The antibacterial plastic is a novel functional plastic with the function of killing or inhibiting the growth and reproduction activities of microorganisms. Many substances in nature have good functions of sterilizing or inhibiting the growth of microorganisms, such as some inorganic metal materials and compounds thereof, organic substances and partial minerals with specific groups, and the like. In terms of the current antibacterial plastic, the antibacterial function composite material is more, namely, a certain antibacterial substance is added into the plastic so as to enable the plastic to achieve the purpose of inhibiting or killing bacteria on the surface of the plastic. The antibacterial plastic can inhibit or kill microorganisms stained on the surfaces of products, and can keep the surfaces of the products clean, so that the harm of harmful microorganisms to human beings contacting the products is reduced, and the antibacterial plastic is more and more widely applied to the field of preparing healthy daily necessities.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an antibacterial polypropylene material and a preparation method thereof, and the antibacterial performance of a polypropylene product is improved.
The invention is realized by the following technical scheme:
an antibacterial polypropylene material comprises the following raw materials in parts by weight: 100-120 parts of polypropylene, 10-15 parts of glass fiber, 10-15 parts of ionic liquid, 2-5 parts of antibacterial filler and 1-3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
The acid treatment of the antibacterial polypropylene material is to treat the activated carbon by adopting a hydrofluoric acid solution.
The antibacterial polypropylene material is characterized in that the mass fraction of hydrofluoric acid in the hydrofluoric acid solution is 85-90%.
The antibacterial polypropylene material is prepared from a silver ion solution and a water solution, wherein the silver ion solution is a mixed solution of silver nitrate, hexametaphosphate and water, and the weight parts of the silver nitrate, the hexametaphosphate and the water are 2-4 parts, 3-5 parts and 15-20 parts respectively.
The ionic liquid is pyrrole ionic liquid.
The auxiliary agent of the antibacterial polypropylene material is one or more of a dispersing agent, a coupling agent or an anti-aging agent.
The preparation method of the antibacterial polypropylene material comprises the following steps: placing the glass fiber in a silver ion solution for ultrasonic soaking, filtering and drying to obtain the glass fiber, placing the glass fiber in an ionic liquid, adding polypropylene, stirring and mixing, adding an antibacterial filler and an auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
The invention achieves the following beneficial effects:
the polypropylene material of the invention takes polypropylene as a main raw material, the glass fiber is added to improve the strength of the polypropylene, the compatibility between the glass fiber and the polypropylene and between the antibacterial filler and the polypropylene are improved through the ionic liquid, and the integral antibacterial performance of the polypropylene material is improved through the antibacterial filler.
The antibacterial filler takes the activated carbon as a main raw material, the surface of the activated carbon is corroded into a rough surface through acid treatment, and then the activated carbon is soaked in the silver ion solution, so that more silver ions can be loaded, and the antibacterial performance of the polypropylene material is improved.
When the material is prepared, the glass fiber is soaked in the silver ion solution, and the glass fiber also has certain antibacterial property, so that the integral antibacterial property of the polypropylene material is improved.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 100 parts of polypropylene, 10 parts of glass fiber, 10 parts of pyrrole ionic liquid, 2 parts of antibacterial filler and 2 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
Wherein, the acid treatment is to treat the active carbon by adopting hydrofluoric acid solution, and the mass fraction of hydrofluoric acid in the hydrofluoric acid solution is 90%.
The silver ion solution is a mixed solution of silver nitrate, hexametaphosphate and water, wherein the weight parts of the silver nitrate, the hexametaphosphate and the water are respectively 2 parts, 5 parts and 15 parts.
The assistant is 1 part of zinc stearate and 1 part of silane coupling agent.
A preparation method of an antibacterial polypropylene material comprises the following steps: placing the glass fiber in a silver ion solution for ultrasonic soaking, filtering and drying to obtain the glass fiber, placing the glass fiber in an ionic liquid, adding polypropylene, stirring and mixing, adding an antibacterial filler and an auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
Example 2
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 120 parts of polypropylene, 15 parts of glass fiber, 15 parts of pyrrole ionic liquid, 5 parts of antibacterial filler and 1 part of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
Wherein, the acid treatment is to treat the active carbon by adopting hydrofluoric acid solution, and the mass fraction of hydrofluoric acid in the hydrofluoric acid solution is 85%.
The silver ion solution is a mixed solution of silver nitrate, hexametaphosphate and water, wherein the parts by weight of the silver nitrate, the hexametaphosphate and the water are 4 parts, 3 parts and 20 parts respectively.
The auxiliary agent is an anti-aging agent.
A preparation method of an antibacterial polypropylene material comprises the following steps: placing the glass fiber in a silver ion solution for ultrasonic soaking, filtering and drying to obtain the glass fiber, placing the glass fiber in an ionic liquid, adding polypropylene, stirring and mixing, adding an antibacterial filler and an auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
Example 3
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 116 parts of polypropylene, 12 parts of glass fiber, 11 parts of pyrrole ionic liquid, 4 parts of antibacterial filler and 3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
Wherein, the acid treatment is to treat the active carbon by adopting hydrofluoric acid solution, and the mass fraction of hydrofluoric acid in the hydrofluoric acid solution is 88%.
The silver ion solution is a mixed solution of silver nitrate, hexametaphosphate and water, wherein the weight parts of the silver nitrate, the hexametaphosphate and the water are 3 parts, 4 parts and 16 parts respectively.
The assistant is 1 part of zinc stearate, 1 part of silane coupling agent and 1 part of anti-aging agent.
A preparation method of an antibacterial polypropylene material comprises the following steps: placing the glass fiber in a silver ion solution for ultrasonic soaking, filtering and drying to obtain the glass fiber, placing the glass fiber in an ionic liquid, adding polypropylene, stirring and mixing, adding an antibacterial filler and an auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
Comparative example 1
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 116 parts of polypropylene, 12 parts of glass fiber, 11 parts of pyrrole ionic liquid, 4 parts of activated carbon and 3 parts of auxiliary agent. The rest is the same as in example 3.
Comparative example 2
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 116 parts of polypropylene, 12 parts of glass fiber, 4 parts of antibacterial filler and 3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler. The rest is the same as in example 3.
Comparative example 3
An antibacterial polypropylene material comprises the following raw materials in parts by weight: 116 parts of polypropylene, 12 parts of glass fiber, 11 parts of pyrrole ionic liquid, 4 parts of antibacterial filler and 3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
A preparation method of an antibacterial polypropylene material comprises the following steps: and (2) placing the glass fiber in ionic liquid, adding polypropylene, stirring and mixing, adding the antibacterial filler and the auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
The rest is the same as in example 3.
The plastic particles in the examples and comparative examples were subjected to performance tests, and the specific results are shown in table 1.
TABLE 1 Plastic particle Performance test results
| Example 1 | Example 1 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Tensile strength MPa | 48.6 | 47.5 | 46.8 | 46.8 | 30.1 | 46.8 |
| Bending strength MPa | 53.1 | 55.2 | 54.8 | 54.8 | 41.2 | 54.8 |
| Impact strength kJ/m 2 | 43.1 | 42.2 | 42.9 | 42.9 | 32.7 | 42.9 |
| The sterilization rate of Staphylococcus aureus% | 99.8 | 99.9 | 99.9 | 30.3 | 99.9 | 90.5 |
| The bactericidal rate of Escherichia coli% | 99.6 | 99.8 | 99.8 | 35.7 | 99.8 | 92.3 |
| Degree of killing by Candida albicans | 99.8 | 99.9 | 99.8 | 32.1 | 99.9 | 91.8 |
| The bactericidal rate of streptococcus pneumoniae% | 99.8 | 99.9 | 99.9 | 36.9 | 99.9 | 91.4 |
Through table 1, compared with comparative example 1, the activated carbon adopted in examples 1, 2 and 3 has improved antibacterial performance of the polypropylene material through antibacterial treatment; compared with the comparative example 2, the examples 1, 2 and 3 adopt the pyrrole ionic liquid, so that the compatibility of polypropylene and glass fiber is improved, and the overall strength of the polypropylene material is improved; compared with the comparative example 3, the antibacterial performance of the whole polypropylene material is improved by soaking the glass fiber in the silver ion solution in the processing of the examples 1, 2 and 3.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (7)
1. An antibacterial polypropylene material is characterized by comprising the following raw materials in parts by weight: 100-120 parts of polypropylene, 10-15 parts of glass fiber, 10-15 parts of ionic liquid, 2-5 parts of antibacterial filler and 1-3 parts of auxiliary agent; the antibacterial filler is obtained by the following steps: and (3) carrying out acid treatment on the activated carbon, cleaning, placing the activated carbon in a silver ion solution for ultrasonic soaking, and filtering to obtain the antibacterial filler.
2. The antimicrobial polypropylene material of claim 1, wherein the acid treatment is a hydrofluoric acid solution treatment of the activated carbon.
3. The antimicrobial polypropylene material of claim 2, wherein the hydrofluoric acid solution comprises 85-90% by weight hydrofluoric acid.
4. The antibacterial polypropylene material as claimed in claim 1, wherein the silver ion solution is a mixed solution of silver nitrate, hexametaphosphate and water, and the weight parts of the silver nitrate, the hexametaphosphate and the water are 2-4 parts, 3-5 parts and 15-20 parts respectively.
5. The antimicrobial polypropylene material of claim 1, wherein the ionic liquid is an azole ionic liquid.
6. The antibacterial polypropylene material of claim 1, wherein the auxiliary agent is one or more of a dispersant, a coupling agent or an anti-aging agent.
7. The process for preparing an antimicrobial polypropylene material according to any one of claims 1 to 6, comprising the steps of: placing the glass fiber in a silver ion solution for ultrasonic soaking, filtering and drying to obtain the glass fiber, placing the glass fiber in an ionic liquid, adding polypropylene, stirring and mixing, adding an antibacterial filler and an auxiliary agent, fully mixing, adding into a double-screw extruder, and carrying out melting, extrusion, grain cutting and drying to obtain the antibacterial polypropylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464348.0A CN114806013A (en) | 2022-04-29 | 2022-04-29 | Antibacterial polypropylene material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464348.0A CN114806013A (en) | 2022-04-29 | 2022-04-29 | Antibacterial polypropylene material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114806013A true CN114806013A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210464348.0A Pending CN114806013A (en) | 2022-04-29 | 2022-04-29 | Antibacterial polypropylene material and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114806013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115891360A (en) * | 2022-12-15 | 2023-04-04 | 杭州传向电气有限公司 | Well body and well cover material for assembled electric working well and preparation method of well body and well cover material |
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