CN115322512A - Antibacterial TPR material applied to bicycle handlebar grips and preparation method thereof - Google Patents
Antibacterial TPR material applied to bicycle handlebar grips and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 109
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title abstract description 37
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 54
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 239000011787 zinc oxide Substances 0.000 claims abstract description 35
- 229920001661 Chitosan Polymers 0.000 claims abstract description 22
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 20
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 150000008442 polyphenolic compounds Chemical class 0.000 claims abstract description 18
- 235000013824 polyphenols Nutrition 0.000 claims abstract description 18
- -1 polypropylene Polymers 0.000 claims abstract description 18
- 241001122767 Theaceae Species 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims abstract description 14
- 229920001155 polypropylene Polymers 0.000 claims abstract description 14
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims description 17
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims 3
- 241000222122 Candida albicans Species 0.000 abstract description 8
- 241000588724 Escherichia coli Species 0.000 abstract description 8
- 241000191967 Staphylococcus aureus Species 0.000 abstract description 8
- 229940095731 candida albicans Drugs 0.000 abstract description 8
- 239000004033 plastic Substances 0.000 abstract description 5
- 230000003385 bacteriostatic effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 239000005060 rubber Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 description 5
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000004636 vulcanized rubber Substances 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 150000001768 cations Chemical group 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241001455273 Tetrapoda Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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 application relates to the technical field of rubber and plastic materials, and particularly discloses an antibacterial TPR material applied to a bicycle handlebar sleeve and a preparation method thereof. An antibacterial TPR material applied to bicycle handlebar grips comprises the following raw materials: SEBS, polypropylene, an antibacterial agent, a dispersing agent and an antioxidant; the antibacterial agent comprises the following raw materials: one or more of tea polyphenol, chitosan, tetrapod-like zinc oxide whisker and hydroxyapatite Dan Zaiyin antibacterial agent. The application also discloses a preparation method of the material, which comprises the following steps: the antibacterial TPR material is obtained by processes of melt extrusion, granulation, sieving, packaging and the like, and the highest bacteriostatic rates of the material on staphylococcus aureus, escherichia coli and candida albicans are respectively 99.8%, 99.5% and 99.9%, so that the antibacterial property of the TPR material is improved. The material has the advantages of long-acting quick antibacterial efficiency, high stability, high compatibility and the like, and is suitable for production and manufacture of the antibacterial TPR bicycle handlebar sleeve.
Description
Technical Field
The application relates to the field of rubber and plastic materials, in particular to an antibacterial TPR material applied to bicycle handlebar grips and a preparation method thereof.
Background
The baby carriage comprises a baby stroller, a baby walker, a baby bicycle, a child tricycle and the like, is a toy and a travel tool which are preferred by children, has extremely high popularization degree, and can exercise the reaction sensitivity and the balance capability of the children. The TPR material is a thermoplastic rubber plastic material, and has the characteristics of good rebound resilience, wear resistance, skid resistance, shock absorption and the like, so that the TPR material is widely applied to the production of the baby carrier and is more applied to a handlebar sleeve of the baby carrier.
However, the TPR material has weak antibacterial property, children tend to move naturally and touch more objects, various bacteria are attached to and infected with the surface of the baby carrier, and when the children play on the baby carrier, the bodies, especially the hands, of the children are often infected with more bacteria.
Disclosure of Invention
In order to improve the antibacterial property of the TPR material, the application provides the antibacterial TPR material applied to the bicycle handlebar sleeve and the preparation method thereof.
In a first aspect, the present application provides an antibacterial TPR material for a bicycle handlebar grip, which adopts the following technical scheme:
an antibacterial TPR material applied to bicycle handlebar grips comprises the following raw materials in parts by weight: 30-70 parts of SEBS, 20-25 parts of polypropylene, 2-10 parts of an antibacterial agent, 1-3 parts of a dispersing agent and 0.3-0.5 part of an antioxidant; the antibacterial agent is one or more of tea polyphenol, chitosan, tetrapod-like zinc oxide whisker and hydroxyapatite Dan Zaiyin antibacterial agent.
The antibacterial TPR material applied to the bicycle handlebar sleeve selects 30-70 parts of SEBS, 20-25 parts of polypropylene, 2-10 parts of an antibacterial agent, 1-3 parts of a dispersing agent and 0.3-0.5 part of an antioxidant, the performance of the TPR material is expected, and when 70 parts of SEBS, 23 parts of polypropylene, 7 parts of an antibacterial agent, 2 parts of a dispersing agent and 0.4 part of an antioxidant are adopted, the experimental effect is optimal.
Moreover, when the antibacterial agent in the antibacterial TPR material is tea polyphenol, chitosan, tetrapod-like zinc oxide whisker and hydroxyapatite Dan Zaiyin antibacterial agent, the antibacterial performance of the TPR material is more than 95%.
By adopting the technical scheme, the SEBS is one of thermoplastic rubbers, is added as a basic raw material, is more suitable for being used as a baby carriage handle sleeve material, and has higher mechanical toughness, chemical resistance and wear resistance. The polypropylene has the characteristics of higher chemical corrosion resistance, strength and the like, and can improve the strength of the TPR material.
The antibacterial agent is selected from tea polyphenol, chitosan, tetrapod-like zinc oxide whisker and hydroxyapatite Dan Zaiyin antibacterial agent, wherein the chitosan has relatively large molecular weight, contains active amino cation group in the molecule, can generate ion action with anion of microorganism cell wall, and inhibits the survival of bacteria and fungi; and chitosan has good film forming property, can form a film to coat the whole thallus, prevents the whole thallus from absorbing nutrition and exchanging substances with external substances, and can not grow and reproduce, thereby achieving the antibacterial effect. The tea polyphenol has the bactericidal effect, and can further improve the antibacterial effect of the chitosan and the antibacterial property of the TPR material. Under the catalytic synergistic effect of the tetrapod-like zinc oxide whiskers, silver ions activate oxygen in water and air to generate active groups such as hydroxyl radicals and superoxide ions, the reproductive capacity of bacteria can be destroyed in a short time, and the antibacterial capacity of the material is improved. The hydroxyapatite Dan Zaiyin antibacterial agent has good biocompatibility and bioactivity, high thermal stability and wide application range.
The dispersant can reduce the internal and external friction of the polymer, increase the melting rate and the dispersing effect of the plastic, reduce the melt viscosity and improve the plasticizing performance. The antioxidant can delay or inhibit the oxidative degradation of the TPR material, improve the oxidation resistance of the TPR material and prolong the service life of the TPR material.
Preferably, the method comprises the following steps: an antibacterial TPR material applied to bicycle handlebar grips comprises the following raw materials in parts by weight: 40-60 parts of SEBS, 22-24 parts of polypropylene, 4-8 parts of an antibacterial agent, 1.5-2.5 parts of a dispersing agent and 0.35-0.45 part of an antioxidant.
The antibacterial TPR material applied to the bicycle handlebar sleeve selects 40-60 parts of SEBS, 22-24 parts of polypropylene, 4-8 parts of antibacterial agent, 1.5-2.5 parts of dispersant and 0.35-0.45 part of antioxidant, and the TPR material has good antibacterial performance.
Preferably, the method comprises the following steps: the antibacterial agent comprises the following raw materials in percentage by weight: 3-5% of tea polyphenol, 3-5% of chitosan, 3-5% of tetrapod-like zinc oxide whisker and 5-10% of hydroxyapatite Dan Zaiyin antibacterial agent.
By adopting the scheme, the chitosan has larger relative molecular weight, contains active amino cation groups in molecules, can generate ionic action with anions of microbial cell walls, and inhibits the survival of bacteria and fungi; and chitosan has good film forming property, can form a film to coat the whole thallus, prevents the whole thallus from absorbing nutrition and exchanging substances with external substances, and can not grow and reproduce, thereby achieving the antibacterial effect. The tea polyphenol has the bactericidal effect, and can further improve the antibacterial effect of the chitosan and the antibacterial property of the TPR material.
The tetrapod-like zinc oxide whiskers have high mechanical toughness and elastic modulus, can be added as an antibacterial auxiliary agent and are used for improving the toughness of the TPR material, and in addition, zinc ions are loaded on the surface of the porous material by the tetrapod-like zinc oxide whiskers, so that the TPR material has a certain antibacterial effect by utilizing the antibacterial capacity of the zinc ions and the slow release effect of the porous material, and the effects of antibiosis, reinforcement, toughening, wear resistance and shock absorption are achieved at the same time.
The hydroxyapatite powder is soaked in silver nitrate solution, and silver ions are loaded on the hydroxyapatite to obtain the hydroxyapatite Dan Zaiyin antibacterial agent, so that the antibacterial agent is more resistant to high temperature, and the antibacterial effect of the TPR material is improved. The addition of the gamma-aminopropyltriethoxysilane can improve the dispersion uniformity of the tetrapod-like zinc oxide whiskers and the hydroxyapatite Dan Zaiyin antibacterial agent in the TPR material, thereby improving the antibacterial performance of the TPR material.
Preferably, the method comprises the following steps: the tetrapod-like zinc oxide whisker is obtained by modification treatment.
Preferably, the method comprises the following steps: the specific operation steps of the modified tetrapod-like zinc oxide whisker are as follows: dispersing the tetrapod-like zinc oxide whiskers into gamma-aminopropyltriethoxysilane, and uniformly stirring to obtain the modified tetrapod-like zinc oxide whiskers.
Preferably, the method comprises the following steps: the weight ratio of the tetrapod-like zinc oxide whisker to the gamma-aminopropyltriethoxysilane is 100: (3-5).
By adopting the technical scheme, the tetrapod-like zinc oxide whiskers are modified, so that the dispersion uniformity of the tetrapod-like zinc oxide whiskers in the TPR material is improved, and the antibacterial property and the mechanical property of the TPR material are improved.
In the application, 2-10 parts by weight of the antibacterial auxiliary agent in the TPR material is selected, the TPR material has good performance index effects, and when 10 parts by weight of the antibacterial auxiliary agent is selected, the effect is optimal.
Preferably, the method comprises the following steps: the dispersant is at least one of ethylene bis-stearic acid amide, white oil and oleic acid amide; the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076.
The dispersant is selected from ethylene bis stearamide, white oil and oleamide; the antioxidant is selected from antioxidant 1010, antioxidant 168 and antioxidant 1076, and various performance indexes of the TPR material are all expected.
In a second aspect, the present application provides a method for preparing any one of the above antibacterial TPR materials applied to bicycle handlebar grips, which is specifically realized by the following technical scheme:
a preparation method of an antibacterial TPR material applied to bicycle handlebar grips comprises the following operation steps:
the antibacterial TPR material applied to the bicycle handle sleeve is prepared by mixing the raw materials, drying, mixing at a high speed, melting, extruding and granulating.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) The antibacterial rate of staphylococcus aureus, escherichia coli and candida albicans in the TPR material is respectively 99.1%, 98.5% and 98.8% at the highest by adjusting the dosage of the hydroxyapatite Dan Zaiyin antibacterial agent in the raw material of the antibacterial TPR material, so that the antibacterial property of the TPR material is improved.
(2) According to the application, chitosan and tea polyphenol are added into the TPR material raw material, and the mixing amount of the chitosan and the tea polyphenol is adjusted, so that the bacteriostatic rates of Staphylococcus aureus, escherichia coli and Candida albicans of the TPR material are respectively 96.1%, 96.3% and 95.2% at the highest, and the antibacterial property of the TPR material is improved.
(3) According to the application, on the basis of the formula of a hydroxyapatite Dan Zaiyin antibacterial agent, chitosan and a tea polyphenol antibacterial agent which are used as raw materials of a TPR material, the tetrapod-shaped zinc oxide whiskers are modified, so that the highest bacteriostatic rates of staphylococcus aureus, escherichia coli and candida albicans of the TPR material are respectively 99.8%, 99.5% and 99.9%, and the antibacterial property of the TPR material is further improved.
Detailed Description
The present application will be described in further detail with reference to specific examples. The following raw materials are all commercially available products, and are all sufficient for disclosure of the raw materials in the present application, and should not be construed as limiting the source of the raw materials. The method specifically comprises the following steps: SEBS, needing modified oil filling; high flow polypropylene; tea polyphenols with effective substance content of 99%; chitosan with the product number JS20201221; tetrapod-like zinc oxide whisker with diameter of 0.5-5 μm; hydroxyapatite with a particle size of 4.5 μm; the dispersant is ethylene bis stearamide; the antioxidant is a compound antioxidant.
The following are examples of the preparation of the antibacterial agent:
preparation example 1
The antibacterial agent of preparation example 1 was obtained by the following procedure: the tea polyphenol and chitosan are uniformly mixed to obtain the antibacterial agent, and the specific mixing amount is detailed in table 1.
Preparation examples 2 to 3
The antibacterial agents of preparation examples 2-3 were identical to those of preparation example 1 in the kind of raw materials and preparation method, except for the difference in the amount of the raw materials, and the specific amount is described in table 1.
TABLE 1 blending amounts (unit: kg) of respective raw materials of the antibacterial TPR materials of preparation examples 1 to 3
| Raw materials | Preparation example 1 | Preparation example 2 | Preparation example 3 |
| Tea polyphenols | 50 | 55 | 30 |
| Chitosan | 50 | 45 | 70 |
Preparation example 4
The antibacterial agent of preparation example 4 was obtained by the following procedure: preparing a sodium hydroxyphosphate silver-loaded antibacterial agent, mixing a silver nitrate aqueous solution with the concentration of 8% with hydroxyapatite according to the mass ratio of 1;
the hydroxyapatite Dan Zaiyin antibacterial agent, tea polyphenol and chitosan are mixed uniformly to obtain the antibacterial agent, and the specific mixing amount is detailed in table 2.
Preparation examples 5 to 8
The antibacterial agents of preparation examples 5-8 were identical to those of preparation example 1 in the kind of raw materials and preparation method, except that the amounts of the raw materials were different, and the specific amounts are shown in table 2.
TABLE 2 blending amounts (unit: kg) of respective raw materials of the antibacterial TPR materials of preparation examples 4 to 8
Preparation example 9
The antibacterial agent of preparation example 9 is completely the same as the raw material mixing amount and preparation method of preparation example 7, except that the tetrapod-like zinc oxide whisker is obtained by modification treatment; the specific operation steps of the modified tetrapod-like zinc oxide whisker are as follows: dispersing the tetrapod-like zinc oxide whiskers into gamma-aminopropyltriethoxysilane, wherein the weight portion ratio of the tetrapod-like zinc oxide whiskers to the gamma-aminopropyltriethoxysilane is 1:5, stirring uniformly to obtain modified tetrapod-like zinc oxide whiskers, and the types of the other raw materials were the same as in preparation example 7.
Example 1
The antibacterial TPR material applied to the bicycle handle grip of the example 1 is prepared by the following operation steps:
SEBS, polypropylene, a dispersing agent (ethylene bis stearamide), an antioxidant and an antibacterial agent (hydroxyapatite Dan Zaiyin antibacterial agent) are mixed, extruded and granulated to obtain the antibacterial TPR material, and the specific mixing amount is shown in Table 3.
Examples 2 to 3
The preparation methods and the types of the raw materials of the antibacterial TPR materials applied to the bicycle handle grip of the embodiments 2-3 are completely the same as those of the embodiment 1, except that the mixing amounts of the raw materials are different, and the details are shown in Table 3.
TABLE 3 blending amounts (unit: kg) of respective raw materials of the antibacterial TPR materials of examples 1 to 3
| Raw materials | Example 1 | Example 2 | Example 3 |
| SEBS | 70 | 70 | 70 |
| Polypropylene | 23 | 23 | 23 |
| Antibacterial agent | 2 | 7 | 10 |
| Dispersing agent | 2 | 2 | 2 |
| Antioxidant agent | 0.4 | 0.4 | 0.4 |
Examples 4 to 12
The preparation methods of the antibacterial TPR materials applied to the bicycle handle grip of examples 4-12 are the same as those of example 2, except that the antibacterial agents prepared in preparation examples 1-9 are selected as the antibacterial agents, and the kinds and the mixing amounts of the other raw materials are the same as those of example 2.
Comparative example 1
The antibacterial TPR material applied to the bicycle handle grip of the comparative example 1 is completely the same as the preparation method of the example 1 except that: the raw materials of the antibacterial TPR material are not added with chitosan, and the other raw materials and the mixing amount are the same as those of the example 1.
Comparative example 2
The antibacterial TPR material applied to the bicycle handlebar sheath of comparative example 2 is completely the same as the preparation method of example 1 except that: the antibacterial agent was not added with tea polyphenol, and the other raw materials and the blending amount were the same as in example 1.
Comparative example 3
The antibacterial TPR material applied to the bicycle handle grip of the comparative example 3 is completely the same as the preparation method of the example 1 except that: the antibacterial agent was not added with tetrapod-like zinc oxide whiskers, and the remaining raw materials and the amount of the added materials were the same as in example 1.
Comparative example 4
The antibacterial TPR material applied to the bicycle handle grip of the comparative example 4 is completely the same as the preparation method of the example 1 except that: the raw materials of the antibacterial TPR material are not added with polypropylene, and the other raw materials and the mixing amount are the same as those of the example 1.
Performance detection
1. Detection of antibacterial Properties
The following test standards or methods were used to test the performance of the antibacterial TPR materials applied to bicycle handle covers obtained in examples 1-12 and comparative examples 1-4, respectively, and the test results are detailed in Table 4.
The bacteriostasis rate is as follows: GB/T31402-2015 'test method for plastic surface antibacterial property' is adopted to detect the bacteriostasis rate of the TPR material on staphylococcus aureus and escherichia coli. The method comprises the following steps of (1) detecting the bacteriostasis rate of the TPR material to Candida albicans by adopting a national film adhesion method:
TABLE 4 Performance test results for different antibacterial TPR materials
The detection results in table 4 show that the highest bacteriostatic rates of staphylococcus aureus, escherichia coli and candida albicans of the TPR material applied to the bicycle handlebar sleeve obtained by the application are 99.8%, 99.5% and 99.9% respectively, and the antibacterial property of the TPR material is obviously improved by adding the antibacterial agent.
Combining various index data of the TPR materials of the embodiments 1-7, the highest bacteriostasis rates of staphylococcus aureus, escherichia coli and candida albicans of the TPR material of the embodiment 7 are respectively 96.7%, 96.6% and 95.6%, which are higher than those of the embodiments 1-6, and the results show that the dosage of the antibacterial agent added into the raw materials of the TPR material of the embodiment 7 is more appropriate, the antibacterial agent is related to the good synergy and better complementation of the sterilization mechanism of the inorganic antibacterial agent and the organic antibacterial agent, and the antibacterial property of the TPR material is improved.
In examples 8 to 12, the highest inhibitory rates of staphylococcus aureus, escherichia coli and candida albicans in the TPR material of example 12 were 99.8%, 99.5% and 99.9%, respectively, which were higher than those in examples 8 to 11, indicating that example 12 added amounts of hydroxyapatite Dan Zaiyin antibacterial agent and tetrapod zinc oxide whisker in adjusting the TPR material raw material. And the tetrapod-like zinc oxide whiskers are modified, so that the antibacterial property of the TPR material is improved. The method is related to the method that zinc ions are loaded on the surface of a porous material by the tetrapod-like zinc oxide whiskers, the TPR material has a certain antibacterial effect by utilizing the antibacterial capability of the zinc ions and the slow release effect of the porous material, and the hydroxyapatite is loaded with silver ions to obtain the hydroxyapatite Dan Zaiyin antibacterial agent, so that the antibacterial agent is more resistant to high temperature, and the antibacterial effect of the TPR material can be improved.
In addition, by combining various index data of the TPR materials in comparative examples 1-4 and example 1, the antibacterial property of the TPR material can be improved to different degrees by adding tea polyphenol, chitosan and tetrapod-like zinc oxide whiskers into the TPR material.
2. Mechanical property detection
The following test standards or methods were used to test the performance of the antibacterial TPR materials applied to bicycle handle covers obtained in examples 1-10 and comparative examples 1-4, respectively, and the test results are detailed in Table 5.
Tensile strength: GBT528-1998 determination of tensile stress strain Properties of vulcanized rubber or thermoplastic rubber is used to test the bending toughness of the antibacterial TPR material.
Elongation at break: GBT528-1998 determination of tensile stress strain Properties of vulcanized rubber or thermoplastic rubber is used to measure the elongation at break of the antibacterial TPR material.
Tear strength: the tearing strength of the antibacterial TPR material is detected by GB/T529-2008 'determination of tearing strength of vulcanized rubber or thermoplastic rubber'.
TABLE 5 Performance test results for different antibacterial TPR materials
The detection results in Table 5 show that the highest elongation at break, highest tear strength and highest tensile strength of the antibacterial TPR material applied to the bicycle handlebar grips are 533%, 42KN/m and 13.33MPa respectively, and the antibacterial TPR material has high mechanical properties. And the performance test data of the antibacterial TPR material in the embodiment 1 and the comparative example 4 show that the strength of the TPR material can be improved by adding polypropylene into the raw material of the antibacterial TPR material.
The specific embodiments are only for explaining the present application and not for limiting the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. An antibacterial TPR material applied to bicycle handlebar grips is characterized by comprising the following raw materials in parts by weight: 30-70 parts of SEBS, 20-25 parts of polypropylene, 2-10 parts of an antibacterial agent, 1-3 parts of a dispersing agent and 0.3-0.5 part of an antioxidant; the antibacterial agent is one or more of tea polyphenol, chitosan, tetrapod-like zinc oxide whisker and hydroxyapatite Dan Zaiyin antibacterial agent.
2. The antibacterial TPR material applied to the bicycle handle grip according to claim 1, comprising the following raw materials by weight: 40-60 parts of SEBS, 22-24 parts of polypropylene, 4-8 parts of an antibacterial agent, 1.5-2.5 parts of a dispersing agent and 0.35-0.45 part of an antioxidant.
3. The antibacterial TPR material applied to bicycle handle covers as claimed in claim 1, wherein the antibacterial agent comprises the following raw materials by weight percent: 3-5% of tea polyphenol, 3-5% of chitosan, 3-5% of tetrapod-like zinc oxide whisker and 5-10% of hydroxyapatite Dan Zaiyin antibacterial agent.
4. The antimicrobial TPR material as applied to bicycle handle covers as claimed in claim 3, wherein: the tetrapod-like zinc oxide whisker is obtained by modification treatment.
5. The antibacterial TPR material applied to bicycle handle covers as claimed in claim 4, wherein the specific operation steps of the modified tetrapod-like zinc oxide whiskers are as follows: dispersing the tetrapod-like zinc oxide whiskers into gamma-aminopropyl triethoxysilane, and uniformly stirring to obtain the modified tetrapod-like zinc oxide whiskers.
6. The antimicrobial TPR material as applied to bicycle handle covers as claimed in claim 5, wherein: the weight ratio of the tetrapod-like zinc oxide whisker to the gamma-aminopropyltriethoxysilane is 100: (3-5).
7. The antimicrobial TPR material as claimed in claim 1 applied to bicycle handle grip covers, wherein: the dispersant is at least one of ethylene bis-stearic acid amide, white oil and oleic acid amide; the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076.
8. A method for preparing the antibacterial TPR material applied to the bicycle handle grip of any one of claims 1 to 7, characterized by comprising the following steps:
and uniformly mixing the raw materials of the antibacterial TPR material, melting, extruding and granulating to obtain the antibacterial TPR material.
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