CN111345576A - Oral care cleaning brush stick - Google Patents
Oral care cleaning brush stick Download PDFInfo
- Publication number
- CN111345576A CN111345576A CN202010238975.3A CN202010238975A CN111345576A CN 111345576 A CN111345576 A CN 111345576A CN 202010238975 A CN202010238975 A CN 202010238975A CN 111345576 A CN111345576 A CN 111345576A
- Authority
- CN
- China
- Prior art keywords
- modified chitosan
- diene monomer
- ethylene propylene
- propylene diene
- chitosan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 24
- 239000004677 Nylon Substances 0.000 claims abstract description 10
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 229920001778 nylon Polymers 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 229920001661 Chitosan Polymers 0.000 claims description 206
- 229920002943 EPDM rubber Polymers 0.000 claims description 141
- 239000011259 mixed solution Substances 0.000 claims description 67
- 239000002131 composite material Substances 0.000 claims description 63
- 239000000203 mixture Substances 0.000 claims description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 239000004005 microsphere Substances 0.000 claims description 45
- 239000000243 solution Substances 0.000 claims description 45
- QLDAACVSUMUMOR-UHFFFAOYSA-M 2,3-dimethoxy-12-methyl-[1,3]benzodioxolo[5,6-c]phenanthridin-12-ium;chloride Chemical compound [Cl-].C1=C2C3=[N+](C)C=C4C=C(OC)C(OC)=CC4=C3C=CC2=CC2=C1OCO2 QLDAACVSUMUMOR-UHFFFAOYSA-M 0.000 claims description 37
- 239000003963 antioxidant agent Substances 0.000 claims description 35
- 230000003078 antioxidant effect Effects 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 32
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 30
- 239000002243 precursor Substances 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 28
- 239000008367 deionised water Substances 0.000 claims description 28
- 229910021641 deionized water Inorganic materials 0.000 claims description 28
- 239000000049 pigment Substances 0.000 claims description 28
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- 239000000725 suspension Substances 0.000 claims description 24
- 239000012043 crude product Substances 0.000 claims description 23
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 22
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 21
- 238000004321 preservation Methods 0.000 claims description 18
- 239000012265 solid product Substances 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 235000021355 Stearic acid Nutrition 0.000 claims description 15
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 15
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 15
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 14
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 14
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 229960004063 propylene glycol Drugs 0.000 claims description 12
- 238000004108 freeze drying Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 10
- 239000005695 Ammonium acetate Substances 0.000 claims description 10
- 235000019257 ammonium acetate Nutrition 0.000 claims description 10
- 229940043376 ammonium acetate Drugs 0.000 claims description 10
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims description 10
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 10
- 229920000053 polysorbate 80 Polymers 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 235000013305 food Nutrition 0.000 claims description 8
- 239000004155 Chlorine dioxide Substances 0.000 claims description 7
- 235000005979 Citrus limon Nutrition 0.000 claims description 7
- 244000131522 Citrus pyriformis Species 0.000 claims description 7
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 claims description 7
- 235000019482 Palm oil Nutrition 0.000 claims description 7
- 235000019483 Peanut oil Nutrition 0.000 claims description 7
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 7
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 7
- 235000012730 carminic acid Nutrition 0.000 claims description 7
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 7
- 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 7
- 239000002540 palm oil Substances 0.000 claims description 7
- 239000000312 peanut oil Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 239000003549 soybean oil Substances 0.000 claims description 7
- 235000012424 soybean oil Nutrition 0.000 claims description 7
- 240000001624 Espostoa lanata Species 0.000 claims description 6
- 235000009161 Espostoa lanata Nutrition 0.000 claims description 6
- 230000009969 flowable effect Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 5
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 claims 1
- 210000000214 mouth Anatomy 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 2
- 230000001488 breeding effect Effects 0.000 abstract description 2
- 230000036039 immunity Effects 0.000 abstract description 2
- 230000001580 bacterial effect Effects 0.000 abstract 1
- 230000000844 anti-bacterial effect Effects 0.000 description 18
- 239000013013 elastic material Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 239000002250 absorbent Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 6
- 239000001055 blue pigment Substances 0.000 description 6
- 239000001052 yellow pigment Substances 0.000 description 6
- 230000003385 bacteriostatic effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000009210 therapy by ultrasound Methods 0.000 description 4
- 239000004964 aerogel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
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- 241000588724 Escherichia coli Species 0.000 description 2
- 206010018276 Gingival bleeding Diseases 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 208000011759 gum bleeding Diseases 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241000222122 Candida albicans Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
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- 229920001971 elastomer Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
- A46B5/026—Grips or handles having a nonslip section
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/04—Arranged like in or for toothbrushes
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/006—Antimicrobial, disinfectant bristles, handle, bristle-carrier or packaging
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Landscapes
- Cosmetics (AREA)
Abstract
The invention relates to the field of medical instruments, in particular to an oral care cleaning brush rod, which comprises a rod body and a brush head, wherein the rod body is of a columnar structure, the brush head is arranged at one end of the rod body, a plurality of through holes are formed in the brush head, and bristles are arranged in the through holes; the bristles are arranged in an annular array around the brush head; the bristles are made of polypropylene or nylon materials; the bristle material is also added with an antibacterial agent. The invention solves the problems that after the oral cavity is cleaned, the cleaning brush stick is easy to breed bacteria and is easy to cause diseases when being frequently used for old and weak patients with low immunity. The bristles are made of polypropylene or nylon materials and added with the antibacterial agent, so that the problem of bacterial breeding in the bristles is solved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an oral care cleaning brush rod.
Background
For some patients who are difficult to take care of themselves, some daily operations in life such as body cleaning, wearing and the like can be completed with the help of nursing staff, but for the tooth cleaning, gum bleeding is easy to be caused in the process of tooth brushing due to the patients or toothbrushes, and particularly for patients with blood system diseases, once bleeding, the patients are often dangerous and life safety is ensured. Therefore, in order to avoid gum bleeding in the oral cavity nursing process, a patient needs to use the soft and safe cleaning brush rod to clean and nurse the oral cavity, the teeth, the tongue and the like, especially for people who are inconvenient to brush teeth, such as hospitalized patients, old and weak people, and people who cannot take care of themselves in bed due to long-term lying diseases. However, after the oral cavity is cleaned, bacteria are easy to breed on the cleaning brush rod, and diseases are easy to cause by frequent use for old and weak patients with low immunity.
Disclosure of Invention
Aiming at the problems, the invention provides an oral care cleaning brush rod, which comprises a rod body and a brush head, wherein the rod body is of a columnar structure, the brush head is arranged at one end of the rod body, a plurality of through holes are formed in the brush head, and bristles are arranged in the through holes; the bristles are arranged in an annular array around the brush head; the other end of the rod body, which is far away from the brush head, is also provided with a moisture absorption piece, and the moisture absorption piece is movably connected with the rod body; antibacterial agents are also added into the bristles.
Preferably, the bristles are made of polypropylene or nylon materials; the antibacterial agent is one or a mixture of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide.
Preferably, the rod body is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials.
Preferably, the stick body is further provided with an anti-slip layer, and the anti-slip layer is made of ABS materials.
Preferably, the absorbent member is a cotton or sponge ball.
Preferably, the brush head is made of an elastic material, and the elastic material is an ethylene propylene diene monomer composite material.
Preferably, the ethylene propylene diene monomer composite material comprises, by weight, 80-100 parts of modified chitosan composite ethylene propylene diene monomer, 10-15 parts of food-grade grease, 2-5 parts of octadecanoic acid, 5-8 parts of diatomite, 2-5 parts of talcum powder, 2-5 parts of food-grade pigment and 1-3 parts of antioxidant.
Preferably, the food grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
Preferably, the food grade pigment is one or more of a lemon yellow pigment, a carmine pigment and a bright blue pigment.
Preferably, the antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
Preferably, the preparation method of the modified chitosan composite ethylene propylene diene monomer rubber comprises the following steps:
step 1, preparing modified chitosan:
s1, weighing chitosan, adding the chitosan into an acetic acid solution with the mass percentage concentration of 2%, stirring until the chitosan is completely dissolved, and then dropwise adding an ammonium acetate solution with the mass percentage concentration of 2-3% to obtain a chitosan mixed solution;
wherein the solid-to-liquid ratio of the chitosan to the acetic acid solution is 1: 30-50; the solid-to-liquid ratio of the chitosan to the ammonium acetate solution is 1: 10-20;
s2, weighing nitidine chloride, adding the nitidine chloride into deionized water, adding polyoxyethylene sorbitan monooleate, heating in a water bath to 40 ℃, and stirring until the nitidine chloride is completely dissolved to obtain nitidine chloride solution; slowly pouring the chitosan mixed solution into nitidine chloride solution, keeping the water bath at 40 ℃, and stirring at the speed of 400-600 rpm for 3-5 hours to obtain a modified chitosan mixed solution;
wherein the solid-to-liquid ratio of the nitidine chloride to the deionized water is 1: 50-60; the mass ratio of the polyoxyethylene sorbitan monooleate to the nitidine chloride is 1: 10-15;
s3, after the modified chitosan mixed solution is cooled to room temperature, adding absolute ethyl alcohol, stirring at the speed of 100-200 rpm for 0.1-0.5 h, filtering, and collecting solids to obtain a modified chitosan crude product; washing the crude modified chitosan product with saturated sodium carbonate aqueous solution for three times, then washing with acetone for three times, freeze-drying, and crushing into nanoparticles by a nano crusher to obtain modified chitosan;
wherein the volume ratio of the modified chitosan mixed solution to the absolute ethyl alcohol is 1: 0.5-2;
step 2, preparing modified chitosan microspheres:
s1, adding modified chitosan into deionized water, and performing ultrasonic dispersion until the mixture is uniform to obtain a modified chitosan suspension;
wherein the solid-to-liquid ratio of the modified chitosan to the deionized water is 1: 20-100;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking the modified chitosan suspension into an injection tube with a needle head with the inner diameter of 200-1000 mu m, and dripping the modified chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein the drops of the modified chitosan suspension form a solid ball-shaped object at the bottom of the heat preservation bottle after passing through the dry ice-absolute ethyl alcohol mixed solution, so that the modified chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting the modified chitosan ice balls, and freeze-drying the modified chitosan ice balls for 12-24 hours under a vacuum condition to obtain a modified chitosan microsphere crude product;
s4, soaking the crude product of the modified chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the crude product in an oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain modified chitosan microspheres;
step 3, preparing a modified chitosan-ethylene propylene diene monomer mixture:
s1, adding the modified chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 2-3; the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 2-5;
s3, quickly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the modified chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a modified chitosan-ethylene propylene diene monomer mixture;
step 4, preparing the modified chitosan composite ethylene propylene diene monomer:
s1, mixing the modified chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the modified chitosan-ethylene propylene diene monomer mixture to 1, 2-propylene glycol is 10: 1-2;
s2, placing the mixed solution A into a mold, then placing the mold into a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing the solid product B into acetone for 5-8 h, immersing the solid product B into deionized water for 2-3 h, and finally placing the solid product B into a drying oven for treatment at the temperature of 60-80 ℃ for 2-3 h to obtain the modified chitosan composite ethylene propylene diene monomer.
Preferably, the ultrasound is performed under the conditions of 40-80W and 20-50 kHz.
Preferably, the preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the modified chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
The invention has the beneficial effects that:
1. the invention relates to an oral care cleaning brush rod, wherein the bristles are made of polypropylene or nylon materials and added with an antibacterial agent, so that the problem of bacteria breeding in the bristles is solved.
2. The material of the brush head of the invention is the ethylene propylene diene monomer composite material, and the ethylene propylene diene monomer has lower density, excellent waterproofness and corrosion resistance, and is very suitable for the oral environment; based on the fact that the brush head needs to be frequently contacted with the oral cavity, edible oil is added into the ethylene propylene diene monomer material to replace traditional toxic rubber softening oil, and food-grade pigment is used to replace traditional carbon black; in addition, the diatomite and the talcum powder are added as fillers, so that the pigment can be easily adsorbed and is not easy to fade, and the octadecanoic acid is added as an activating agent and a plasticizer; the added chitosan is a biodegradable and biocompatible (harmless to living tissues) polymer, and has certain antibacterial property.
3. In order to enhance the antibacterial property of the ethylene propylene diene monomer, the modified chitosan aerogel microspheres are prepared by modifying chitosan with nitidine chloride, and then the modified chitosan aerogel microspheres are modified and compounded with the ethylene propylene diene monomer, so that the finally obtained modified chitosan-ethylene propylene diene monomer mixture is improved in the antibacterial property, and the defects of poor hardness and wear resistance of the ethylene propylene diene monomer are overcome.
Among them, chitosan is a natural biodegradable antibacterial material, however, it has limited antibacterial properties and has a defect of permeability to gas and water, resulting in a discount in its application. According to the invention, nitidine chloride capable of being naturally extracted is selected to modify chitosan, so that the antibacterial property of chitosan is improved, and the defect of water and gas permeability of chitosan is overcome; the modified chitosan is prepared into the aerogel microspheres in order to be better fused with the ethylene propylene diene monomer, and the finally obtained modified chitosan-ethylene propylene diene monomer mixture has stronger antibacterial property and is greatly improved in hardness and wear resistance.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a schematic view of an oral care cleaning brush bar of the present invention;
reference numerals: the toothbrush comprises a rod body 1, a toothbrush head 2, through holes 3, bristles 4, a moisture absorption piece 5 and an anti-skid layer 6.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
An oral care cleaning brush bar, as shown in figure 1, comprises a bar body 1 and a brush head 2, wherein the bar body 1 is of a columnar structure, the brush head 2 is arranged at one end of the bar body 1, a plurality of through holes 3 are formed in the brush head 2, and bristles 4 are arranged in the through holes 3; the bristles 4 are arranged in an annular array around the brush head 2; the other end of the rod body 1, which is far away from the brush head 2, is also provided with a moisture absorption piece 5, and the moisture absorption piece 5 is movably connected with the rod body 1; antibacterial agents are also added to the bristles 4.
The brush hair 4 is made of polypropylene or nylon material; the antibacterial agent is one or more of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide. The rod body 1 is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials. The bar body 1 is also provided with an anti-skid layer 6, and the anti-skid layer 6 is made of ABS material. The absorbent member 5 is a cotton ball or a sponge ball.
The brush head 2 is made of elastic material, and the elastic material is ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite material comprises, by weight, 90 parts of modified chitosan composite ethylene propylene diene monomer, 12 parts of food-grade grease, 3 parts of octadecanoic acid, 6 parts of diatomite, 4 parts of talcum powder, 3 parts of food-grade pigment and 2 parts of antioxidant.
The food-grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
The food grade pigment is one or more of lemon yellow pigment, carmine pigment and bright blue pigment.
The antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
The preparation method of the modified chitosan composite ethylene propylene diene monomer rubber comprises the following steps:
step 1, preparing modified chitosan:
s1, weighing chitosan, adding the chitosan into an acetic acid solution with the mass percentage concentration of 2%, stirring until the chitosan is completely dissolved, and then dropwise adding an ammonium acetate solution with the mass percentage concentration of 2-3% to obtain a chitosan mixed solution;
wherein the solid-to-liquid ratio of the chitosan to the acetic acid solution is 1: 40; the solid-to-liquid ratio of the chitosan to the ammonium acetate solution is 1: 15;
s2, weighing nitidine chloride, adding the nitidine chloride into deionized water, adding polyoxyethylene sorbitan monooleate, heating in a water bath to 40 ℃, and stirring until the nitidine chloride is completely dissolved to obtain nitidine chloride solution; slowly pouring the chitosan mixed solution into nitidine chloride solution, keeping the water bath at 40 ℃, and stirring at the speed of 400-600 rpm for 3-5 hours to obtain a modified chitosan mixed solution;
wherein the solid-to-liquid ratio of nitidine chloride to deionized water is 1: 55; the mass ratio of the polyoxyethylene sorbitan monooleate to the nitidine chloride is 1: 12;
s3, after the modified chitosan mixed solution is cooled to room temperature, adding absolute ethyl alcohol, stirring at the speed of 100-200 rpm for 0.1-0.5 h, filtering, and collecting solids to obtain a modified chitosan crude product; washing the crude product of the modified chitosan with saturated sodium carbonate aqueous solution for three times, then washing with acetone for three times, freeze-drying, and crushing into nanoparticles by a nano crusher to obtain the modified chitosan;
wherein the volume ratio of the modified chitosan mixed solution to the absolute ethyl alcohol is 1: 1;
step 2, preparing modified chitosan microspheres:
s1, adding modified chitosan into deionized water, and performing ultrasonic dispersion until the mixture is uniform to obtain a modified chitosan suspension;
wherein the solid-to-liquid ratio of the chitosan to the deionized water is 1: 60;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking the modified chitosan suspension into an injection tube with the inner diameter of a needle head of 200-1000 mu m, and dripping the modified chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein after the liquid drops of the modified chitosan suspension pass through the dry ice-absolute ethyl alcohol mixed solution, a solid spherical object is formed at the bottom of the heat preservation bottle, and the modified chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting the modified chitosan ice balls, and freeze-drying the modified chitosan ice balls for 12-24 hours under a vacuum condition to obtain a modified chitosan microsphere crude product;
s4, soaking the crude product of the modified chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the soaked product in an oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain modified chitosan microspheres;
step 3, preparing a modified chitosan-ethylene propylene diene monomer mixture:
s1, adding the modified chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 2.5; the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 3.5;
s3, rapidly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the modified chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a modified chitosan-ethylene propylene diene monomer mixture;
step 4, preparing the modified chitosan composite ethylene propylene diene monomer:
s1, mixing the modified chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the modified chitosan-ethylene propylene diene monomer mixture to the 1, 2-propylene glycol is 10: 1.5;
s2, placing the mixed solution A in a mold, then placing the mold in a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing into acetone for 5-8 h, immersing into deionized water for 2-3 h, and finally placing in an oven for treatment at 60-80 ℃ for 2-3 h to obtain the modified chitosan composite ethylene propylene diene monomer.
Wherein the ultrasonic treatment is carried out under the conditions of 40-80W and 20-50 kHz.
The preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the modified chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
Example 2
An oral care cleaning brush bar, as shown in figure 1, comprises a bar body 1 and a brush head 2, wherein the bar body 1 is of a columnar structure, the brush head 2 is arranged at one end of the bar body 1, a plurality of through holes 3 are formed in the brush head 2, and bristles 4 are arranged in the through holes 3; the bristles 4 are arranged in an annular array around the brush head 2; the other end of the rod body 1, which is far away from the brush head 2, is also provided with a moisture absorption piece 5, and the moisture absorption piece 5 is movably connected with the rod body 1; antibacterial agents are also added to the bristles 4.
The brush hair 4 is made of polypropylene or nylon material; the antibacterial agent is one or more of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide. The rod body 1 is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials. The bar body 1 is also provided with an anti-skid layer 6, and the anti-skid layer 6 is made of ABS material. The absorbent member 5 is a cotton ball or a sponge ball.
The brush head 2 is made of elastic material, and the elastic material is ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite material comprises, by weight, 80 parts of modified chitosan composite ethylene propylene diene monomer, 10 parts of food-grade grease, 2 parts of octadecanoic acid, 5 parts of diatomite, 2 parts of talcum powder, 2 parts of food-grade pigment and 1 part of antioxidant.
The food-grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
The food grade pigment is one or more of lemon yellow pigment, carmine pigment and bright blue pigment.
The antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
The preparation method of the modified chitosan composite ethylene propylene diene monomer rubber comprises the following steps:
step 1, preparing modified chitosan:
s1, weighing chitosan, adding the chitosan into an acetic acid solution with the mass percentage concentration of 2%, stirring until the chitosan is completely dissolved, and then dropwise adding an ammonium acetate solution with the mass percentage concentration of 2-3% to obtain a chitosan mixed solution;
wherein the solid-to-liquid ratio of the chitosan to the acetic acid solution is 1: 30; the solid-to-liquid ratio of the chitosan to the ammonium acetate solution is 1: 10;
s2, weighing nitidine chloride, adding the nitidine chloride into deionized water, adding polyoxyethylene sorbitan monooleate, heating in a water bath to 40 ℃, and stirring until the nitidine chloride is completely dissolved to obtain nitidine chloride solution; slowly pouring the chitosan mixed solution into nitidine chloride solution, keeping the water bath at 40 ℃, and stirring at the speed of 400-600 rpm for 3-5 hours to obtain a modified chitosan mixed solution;
wherein the solid-to-liquid ratio of nitidine chloride to deionized water is 1: 50; the mass ratio of the polyoxyethylene sorbitan monooleate to the nitidine chloride is 1: 10;
s3, after the modified chitosan mixed solution is cooled to room temperature, adding absolute ethyl alcohol, stirring at the speed of 100-200 rpm for 0.1-0.5 h, filtering, and collecting solids to obtain a modified chitosan crude product; washing the crude product of the modified chitosan with saturated sodium carbonate aqueous solution for three times, then washing with acetone for three times, freeze-drying, and crushing into nanoparticles by a nano crusher to obtain the modified chitosan;
wherein the volume ratio of the modified chitosan mixed solution to the absolute ethyl alcohol is 1: 0.5;
step 2, preparing modified chitosan microspheres:
s1, adding modified chitosan into deionized water, and performing ultrasonic dispersion until the mixture is uniform to obtain a modified chitosan suspension;
wherein the solid-to-liquid ratio of the modified chitosan to the deionized water is 1: 20;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking the modified chitosan suspension into an injection tube with the inner diameter of a needle head of 200-1000 mu m, and dripping the modified chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein after the liquid drops of the modified chitosan suspension pass through the dry ice-absolute ethyl alcohol mixed solution, a solid spherical object is formed at the bottom of the heat preservation bottle, and the modified chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting the modified chitosan ice balls, and freeze-drying the modified chitosan ice balls for 12-24 hours under a vacuum condition to obtain a modified chitosan microsphere crude product;
s4, soaking the crude product of the modified chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the soaked product in an oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain modified chitosan microspheres;
step 3, preparing a modified chitosan-ethylene propylene diene monomer mixture:
s1, adding the modified chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 2-3; the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 2;
s3, rapidly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the modified chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a modified chitosan-ethylene propylene diene monomer mixture;
step 4, preparing the modified chitosan composite ethylene propylene diene monomer:
s1, mixing the modified chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the modified chitosan-ethylene propylene diene monomer mixture to the 1, 2-propylene glycol is 10: 1;
s2, placing the mixed solution A in a mold, then placing the mold in a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing into acetone for 5-8 h, immersing into deionized water for 2-3 h, and finally placing in an oven for treatment at 60-80 ℃ for 2-3 h to obtain the modified chitosan composite ethylene propylene diene monomer.
Wherein the ultrasonic treatment is carried out under the conditions of 40-80W and 20-50 kHz.
The preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the modified chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
Example 3
An oral care cleaning brush bar, as shown in figure 1, comprises a bar body 1 and a brush head 2, wherein the bar body 1 is of a columnar structure, the brush head 2 is arranged at one end of the bar body 1, a plurality of through holes 3 are formed in the brush head 2, and bristles 4 are arranged in the through holes 3; the bristles 4 are arranged in an annular array around the brush head 2; the other end of the rod body 1, which is far away from the brush head 2, is also provided with a moisture absorption piece 5, and the moisture absorption piece 5 is movably connected with the rod body 1; antibacterial agents are also added to the bristles 4.
The brush hair 4 is made of polypropylene or nylon material; the antibacterial agent is one or more of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide. The rod body 1 is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials. The bar body 1 is also provided with an anti-skid layer 6, and the anti-skid layer 6 is made of ABS material. The absorbent member 5 is a cotton ball or a sponge ball.
The brush head 2 is made of elastic material, and the elastic material is ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite material comprises, by weight, 100 parts of modified chitosan composite ethylene propylene diene monomer, 15 parts of food-grade grease, 5 parts of octadecanoic acid, 8 parts of diatomite, 5 parts of talcum powder, 5 parts of food-grade pigment and 3 parts of antioxidant.
The food-grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
The food grade pigment is one or more of lemon yellow pigment, carmine pigment and bright blue pigment.
The antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
The preparation method of the modified chitosan composite ethylene propylene diene monomer rubber comprises the following steps:
step 1, preparing modified chitosan:
s1, weighing chitosan, adding the chitosan into an acetic acid solution with the mass percentage concentration of 2%, stirring until the chitosan is completely dissolved, and then dropwise adding an ammonium acetate solution with the mass percentage concentration of 2-3% to obtain a chitosan mixed solution;
wherein the solid-to-liquid ratio of the chitosan to the acetic acid solution is 1: 50; the solid-to-liquid ratio of the chitosan to the ammonium acetate solution is 1: 20;
s2, weighing nitidine chloride, adding the nitidine chloride into deionized water, adding polyoxyethylene sorbitan monooleate, heating in a water bath to 40 ℃, and stirring until the nitidine chloride is completely dissolved to obtain nitidine chloride solution; slowly pouring the chitosan mixed solution into nitidine chloride solution, keeping the water bath at 40 ℃, and stirring at the speed of 400-600 rpm for 3-5 hours to obtain a modified chitosan mixed solution;
wherein the solid-to-liquid ratio of nitidine chloride to deionized water is 1: 60; the mass ratio of the polyoxyethylene sorbitan monooleate to the nitidine chloride is 1: 15;
s3, after the modified chitosan mixed solution is cooled to room temperature, adding absolute ethyl alcohol, stirring at the speed of 100-200 rpm for 0.1-0.5 h, filtering, and collecting solids to obtain a modified chitosan crude product; washing the crude product of the modified chitosan with saturated sodium carbonate aqueous solution for three times, then washing with acetone for three times, freeze-drying, and crushing into nanoparticles by a nano crusher to obtain the modified chitosan;
wherein the volume ratio of the modified chitosan mixed solution to the absolute ethyl alcohol is 1: 2;
step 2, preparing modified chitosan microspheres:
s1, adding modified chitosan into deionized water, and performing ultrasonic dispersion until the mixture is uniform to obtain a modified chitosan suspension;
wherein the solid-to-liquid ratio of the modified chitosan to the deionized water is 1: 100;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking the modified chitosan suspension into an injection tube with the inner diameter of a needle head of 200-1000 mu m, and dripping the modified chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein after the liquid drops of the modified chitosan suspension pass through the dry ice-absolute ethyl alcohol mixed solution, a solid spherical object is formed at the bottom of the heat preservation bottle, and the modified chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting the modified chitosan ice balls, and freeze-drying the modified chitosan ice balls for 12-24 hours under a vacuum condition to obtain a modified chitosan microsphere crude product;
s4, soaking the crude product of the modified chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the soaked product in an oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain modified chitosan microspheres;
step 3, preparing a modified chitosan-ethylene propylene diene monomer mixture:
s1, adding the modified chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 5; the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 3;
s3, rapidly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the modified chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a modified chitosan-ethylene propylene diene monomer mixture;
step 4, preparing the modified chitosan composite ethylene propylene diene monomer:
s1, mixing the modified chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the modified chitosan-ethylene propylene diene monomer mixture to the 1, 2-propylene glycol is 10: 2;
s2, placing the mixed solution A in a mold, then placing the mold in a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing into acetone for 5-8 h, immersing into deionized water for 2-3 h, and finally placing in an oven for treatment at 60-80 ℃ for 2-3 h to obtain the modified chitosan composite ethylene propylene diene monomer.
Wherein the ultrasonic treatment is carried out under the conditions of 40-80W and 20-50 kHz.
The preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the modified chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
Comparative example 1
An oral care cleaning brush bar, as shown in figure 1, comprises a bar body 1 and a brush head 2, wherein the bar body 1 is of a columnar structure, the brush head 2 is arranged at one end of the bar body 1, a plurality of through holes 3 are formed in the brush head 2, and bristles 4 are arranged in the through holes 3; the bristles 4 are arranged in an annular array around the brush head 2; the other end of the rod body 1, which is far away from the brush head 2, is also provided with a moisture absorption piece 5, and the moisture absorption piece 5 is movably connected with the rod body 1; antibacterial agents are also added to the bristles 4.
The brush hair 4 is made of polypropylene or nylon material; the antibacterial agent is one or more of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide. The rod body 1 is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials. The bar body 1 is also provided with an anti-skid layer 6, and the anti-skid layer 6 is made of ABS material. The absorbent member 5 is a cotton ball or a sponge ball.
The brush head 2 is made of elastic material, and the elastic material is ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite material comprises, by weight, 90 parts of ethylene propylene diene monomer, 12 parts of food-grade grease, 3 parts of octadecanoic acid, 6 parts of diatomite, 4 parts of talcum powder, 3 parts of food-grade pigment and 2 parts of antioxidant.
The food-grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
The food grade pigment is one or more of lemon yellow pigment, carmine pigment and bright blue pigment.
The antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
The preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding ethylene propylene diene monomer and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
Comparative example 2
An oral care cleaning brush bar, as shown in figure 1, comprises a bar body 1 and a brush head 2, wherein the bar body 1 is of a columnar structure, the brush head 2 is arranged at one end of the bar body 1, a plurality of through holes 3 are formed in the brush head 2, and bristles 4 are arranged in the through holes 3; the bristles 4 are arranged in an annular array around the brush head 2; the other end of the rod body 1, which is far away from the brush head 2, is also provided with a moisture absorption piece 5, and the moisture absorption piece 5 is movably connected with the rod body 1; antibacterial agents are also added to the bristles 4.
The brush hair 4 is made of polypropylene or nylon material; the antibacterial agent is one or more of silver ion antibacterial agent, chlorine dioxide, hydrogen peroxide and potassium iodide. The rod body 1 is made of degradable materials; the degradable material is prepared by taking agricultural and sideline products as raw materials. The bar body 1 is also provided with an anti-skid layer 6, and the anti-skid layer 6 is made of ABS material. The absorbent member 5 is a cotton ball or a sponge ball.
The brush head 2 is made of elastic material, and the elastic material is ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite material comprises, by weight, 90 parts of chitosan composite ethylene propylene diene monomer, 12 parts of food-grade grease, 3 parts of octadecanoic acid, 6 parts of diatomite, 4 parts of talcum powder, 3 parts of food-grade pigment and 2 parts of antioxidant.
The food-grade oil is one or more of palm oil, soybean oil, peanut oil and rapeseed oil.
The food grade pigment is one or more of lemon yellow pigment, carmine pigment and bright blue pigment.
The antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164 and antioxidant TNP.
The preparation method of the chitosan composite ethylene propylene diene monomer rubber comprises the following steps:
step 1, preparing chitosan microspheres:
s1, adding chitosan into deionized water, and performing ultrasonic dispersion until the chitosan is uniformly dispersed to obtain chitosan suspension;
wherein the solid-to-liquid ratio of the chitosan to the deionized water is 1: 60;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking chitosan suspension into an injection tube with the inner diameter of a needle head of 200-1000 mu m, and dripping the chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein after the drops of the chitosan suspension pass through the dry ice-absolute ethyl alcohol mixed solution, a solid ball-shaped object is formed at the bottom of the heat preservation bottle, and the chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting chitosan ice balls, and freeze-drying the chitosan ice balls for 12-24 hours under a vacuum condition to obtain a crude product of chitosan microspheres;
s4, soaking the crude product of the chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the crude product into a drying oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain chitosan microspheres;
step 2, preparing a chitosan-ethylene propylene diene monomer mixture:
s1, adding chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 2.5; the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 3.5;
s3, rapidly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a chitosan-ethylene propylene diene monomer mixture;
step 3, preparing the chitosan composite ethylene propylene diene monomer:
s1, mixing a chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the chitosan-ethylene propylene diene monomer mixture to the 1, 2-propylene glycol is 10: 1.5;
s2, placing the mixed solution A in a mold, then placing the mold in a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing into acetone for 5-8 h, immersing into deionized water for 2-3 h, and finally placing in an oven for treatment at 60-80 ℃ for 2-3 h to obtain the chitosan composite ethylene propylene diene monomer.
Wherein the ultrasonic treatment is carried out under the conditions of 40-80W and 20-50 kHz.
The preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to obtain a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
The ethylene propylene diene monomer composite materials prepared in the embodiments 1-3 and the comparative examples 1-2 are subjected to detection on mechanical property, wear resistance and antibacterial property.
1. Mechanical Property and abrasion resistance measurement
The ethylene propylene diene monomer composite materials (thickness of 2 +/-0.05 mm; size of 100mm × 10mm) prepared in examples 1-3 and comparative examples 1-2 of the invention were tested for mechanical properties and wear resistance, and the results are shown in table 1.
TABLE 1 detection of mechanical and wear-resisting properties of ethylene propylene diene monomer composite materials
As is clear from Table 1, the tensile strength, hardness and wear rate of the steel sheet are improved significantly in examples 1 to 3 of the present invention, although the elongation at break is lower than that of comparative example 1.
2. Detection of antibacterial Properties
The results of the antibacterial properties (Escherichia coli and Staphylococcus aureus) of the ethylene propylene diene monomer composite materials (thickness of 2. + -. 0.05 mm; size of 100mm × 10mm) prepared in examples 1 to 3 and comparative examples 1 to 2 of the present invention are shown in Table 2.
The antibacterial performance is measured by a bacteriostatic ring method. The method comprises the steps of paving a microorganism culture medium at the bottom of culture, introducing a strain to be tested on the microorganism culture medium, placing an antibacterial test sample, culturing for 24 hours in a constant temperature box at 37 ℃, judging whether the test sample has antibacterial performance according to whether a development growth inhibition zone, namely a transparent circular ring (namely a sufficient inhibition zone) of bacteria growing at the end exists around the test sample, and evaluating the antibacterial effect according to the size of an aseptic area. Judging the bacteriostatic action: if the diameter of the bacteriostatic circle is larger than 7mm, the product is judged to have bacteriostatic action; if the diameter of the inhibition zone is less than or equal to 7mm, the product is judged to have no inhibition effect.
TABLE 2 detection of antibacterial Properties of EPDM rubber composites
As is clear from Table 2, examples 1 to 3 of the present invention have a strong antibacterial activity against Escherichia coli, Staphylococcus aureus and Candida albicans, while comparative example 2 has a certain antibacterial activity, but is weaker than examples 1 to 3 and has almost no antibacterial activity against comparative example 1.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. An oral care cleaning brush rod is characterized by comprising a rod body and a brush head, wherein the rod body is of a columnar structure, the brush head is arranged at one end of the rod body, a plurality of through holes are formed in the brush head, and bristles are arranged in the through holes; the bristles are arranged in an annular array around the brush head; the bristles are made of polypropylene or nylon materials; the bristle material is also added with an antibacterial agent.
2. The oral care cleaning brush bar of claim 1, wherein the bar body is made of a degradable material; the degradable material is prepared by taking agricultural and sideline products as raw materials; the anti-skid bar is characterized in that an anti-skid layer is further arranged on the bar body and is made of ABS materials.
3. The oral care cleaning brush bar according to claim 1 or 2, wherein the other end of the bar body away from the brush head is further provided with a moisture absorption piece, and the moisture absorption piece is movably connected with the bar body; the moisture absorption piece is a cotton ball or a sponge ball.
4. The oral care cleaning brush bar of claim 1, wherein the antibacterial agent is a mixture of one or more of silver ion type antibacterial agent, chlorine dioxide, hydrogen peroxide, potassium iodide.
5. The oral care cleaning brush bar of claim 1, wherein the brush head is made of an Ethylene Propylene Diene Monomer (EPDM) rubber composite; the ethylene propylene diene monomer composite material comprises the following components in parts by weight: 80-100 parts of modified chitosan composite ethylene propylene diene monomer, 10-15 parts of food-grade grease, 2-5 parts of octadecanoic acid, 5-8 parts of diatomite, 2-5 parts of talcum powder, 2-5 parts of food-grade pigment and 1-3 parts of antioxidant.
6. The oral care cleaning brush bar of claim 5, wherein the food-grade grease is one or more of palm oil, soybean oil, peanut oil, and rapeseed oil.
7. The oral care cleaning brush bar of claim 5, wherein the food grade color is one or more of a lemon yellow color, a carmine color, and a brilliant blue color.
8. The oral care cleaning brush bar of claim 5, wherein the antioxidant is one or more of antioxidant 1098, antioxidant 1076, antioxidant 164, and antioxidant TNP.
9. The oral care cleaning brush bar according to claim 5, wherein the modified chitosan compounded ethylene propylene diene monomer is prepared by the following method:
step 1, preparing modified chitosan:
s1, weighing chitosan, adding the chitosan into an acetic acid solution with the mass percentage concentration of 2%, stirring until the chitosan is completely dissolved, and then dropwise adding an ammonium acetate solution with the mass percentage concentration of 2-3% to obtain a chitosan mixed solution;
wherein the solid-to-liquid ratio of the chitosan to the acetic acid solution is 1: 30-50; the solid-to-liquid ratio of the chitosan to the ammonium acetate solution is 1: 10-20;
s2, weighing nitidine chloride, adding the nitidine chloride into deionized water, adding polyoxyethylene sorbitan monooleate, heating in a water bath to 40 ℃, and stirring until the nitidine chloride is completely dissolved to obtain nitidine chloride solution; slowly pouring the chitosan mixed solution into nitidine chloride solution, keeping the water bath at 40 ℃, and stirring at the speed of 400-600 rpm for 3-5 hours to obtain a modified chitosan mixed solution;
wherein the solid-to-liquid ratio of the nitidine chloride to the deionized water is 1: 50-60; the mass ratio of the polyoxyethylene sorbitan monooleate to the nitidine chloride is 1: 10-15;
s3, after the modified chitosan mixed solution is cooled to room temperature, adding absolute ethyl alcohol, stirring at the speed of 100-200 rpm for 0.1-0.5 h, filtering, and collecting solids to obtain a modified chitosan crude product; washing the crude modified chitosan product with saturated sodium carbonate aqueous solution for three times, then washing with acetone for three times, freeze-drying, and crushing into nanoparticles by a nano crusher to obtain modified chitosan;
wherein the volume ratio of the modified chitosan mixed solution to the absolute ethyl alcohol is 1: 0.5-2;
step 2, preparing modified chitosan microspheres:
s1, adding modified chitosan into deionized water, and performing ultrasonic dispersion until the mixture is uniform to obtain a modified chitosan suspension;
wherein the solid-to-liquid ratio of the modified chitosan to the deionized water is 1: 20-100;
s2, adding a dry ice-absolute ethyl alcohol mixed solution into a heat preservation bottle, sucking the modified chitosan suspension into an injection tube with a needle head with the inner diameter of 200-1000 mu m, and dripping the modified chitosan suspension into the heat preservation bottle at the speed of 5-10 drops/min, wherein the drops of the modified chitosan suspension form a solid ball-shaped object at the bottom of the heat preservation bottle after passing through the dry ice-absolute ethyl alcohol mixed solution, so that the modified chitosan ice ball is obtained;
wherein the dry ice-absolute ethyl alcohol mixed solution is kept as a flowable liquid, and the temperature is lower than-40 ℃;
s3, collecting the modified chitosan ice balls, and freeze-drying the modified chitosan ice balls for 12-24 hours under a vacuum condition to obtain a modified chitosan microsphere crude product;
s4, soaking the crude product of the modified chitosan microspheres in absolute ethyl alcohol for 5-8 hours, and then placing the crude product in an oven at the temperature of 60-80 ℃ for treatment for 2-10 hours to obtain modified chitosan microspheres;
step 3, preparing a modified chitosan-ethylene propylene diene monomer mixture:
s1, adding the modified chitosan microspheres into a sealed bottle, connecting a vacuum pump to a negative pressure, and continuing for 0.1-0.5 h;
s2, weighing a liquid ethylene propylene diene monomer precursor, adding the liquid ethylene propylene diene monomer precursor into THF, and stirring until the liquid ethylene propylene diene monomer precursor is completely dissolved to obtain an ethylene propylene diene monomer solution;
wherein the mass ratio of the liquid ethylene propylene diene monomer precursor to THF is 1: 2-3; the mass ratio of the liquid ethylene propylene diene monomer precursor to the chitosan microspheres is 100: 2-5;
s3, quickly pouring the ethylene propylene diene monomer solution into a sealed bottle containing the modified chitosan microspheres, enabling the sealed bottle to be in a closed and negative pressure state, shaking the sealed bottle until the mixed solution in the bottle is uniform, standing for 1-3 h, removing the negative pressure state of the sealed bottle, and treating the sealed bottle containing the mixed solution under an ultrasonic condition for 3-5 h to obtain a modified chitosan-ethylene propylene diene monomer mixture;
step 4, preparing the modified chitosan composite ethylene propylene diene monomer:
s1, mixing the modified chitosan-ethylene propylene diene monomer mixture with 1, 2-propylene glycol, and stirring at a speed of 200-300 rpm for 0.5-1 h to obtain a mixed solution A;
wherein the mass ratio of the modified chitosan-ethylene propylene diene monomer mixture to 1, 2-propylene glycol is 10: 1-2;
s2, placing the mixed solution A into a mold, then placing the mold into a drying oven at the temperature of 40-60 ℃, treating for 3-5 hours, raising the temperature of the drying oven to 90-120 ℃, and treating for 0.5-2 hours to obtain a solid product B;
s3, immersing the solid product B into trifluoroacetic acid for 10-18 h, immersing the solid product B into acetone for 5-8 h, immersing the solid product B into deionized water for 2-3 h, and finally placing the solid product B into a drying oven for treatment at the temperature of 60-80 ℃ for 2-3 h to obtain the modified chitosan composite ethylene propylene diene monomer.
10. The oral care cleaning brush bar according to claim 5, wherein the preparation method of the ethylene propylene diene monomer composite material comprises the following steps:
step 1: adding the modified chitosan composite ethylene propylene diene monomer rubber and octadecanoic acid into an internal mixer, heating to 100-120 ℃, and mixing for 5-8 min; then cooling to 90-100 ℃, adding modified diatomite, talcum powder, food-grade pigment and food-grade grease, mixing for 3-5 min, cooling equipment to 60-80 ℃, adding an antioxidant, and mixing for 2-5 min to prepare a mixture;
step 2: and (3) uniformly mixing the mixture prepared in the step (1) on an open mill, thinly passing the mixture for 2-3 times, and cooling the mixture to room temperature through air cooling equipment to obtain the ethylene propylene diene monomer composite material.
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| KR20040040994A (en) * | 2003-02-25 | 2004-05-13 | 유춘기 | mouth cleaner |
| CN202341215U (en) * | 2011-12-07 | 2012-07-25 | 张建红 | Oral cavity nursing brush |
| CN102743018A (en) * | 2012-07-03 | 2012-10-24 | 彭传兵 | Preparation method of straw stalk brush |
| CN104544945A (en) * | 2013-10-11 | 2015-04-29 | 陈智凯 | Toothbrush |
| CN204889088U (en) * | 2015-09-06 | 2015-12-23 | 安溪县百家宜家居用品有限公司 | Toothbrush |
| CN208286631U (en) * | 2018-06-01 | 2018-12-28 | 株式会社Lg生活健康 | toothbrush |
| CN109394370A (en) * | 2018-11-01 | 2019-03-01 | 佛山科学技术学院 | A kind of cleaning rod for oral care |
| CN110483934A (en) * | 2019-08-09 | 2019-11-22 | 宁波新安东密封保温系统有限公司 | A kind of modified EPT rubber packing material and preparation method thereof |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040994A (en) * | 2003-02-25 | 2004-05-13 | 유춘기 | mouth cleaner |
| CN202341215U (en) * | 2011-12-07 | 2012-07-25 | 张建红 | Oral cavity nursing brush |
| CN102743018A (en) * | 2012-07-03 | 2012-10-24 | 彭传兵 | Preparation method of straw stalk brush |
| CN104544945A (en) * | 2013-10-11 | 2015-04-29 | 陈智凯 | Toothbrush |
| CN204889088U (en) * | 2015-09-06 | 2015-12-23 | 安溪县百家宜家居用品有限公司 | Toothbrush |
| CN208286631U (en) * | 2018-06-01 | 2018-12-28 | 株式会社Lg生活健康 | toothbrush |
| CN109394370A (en) * | 2018-11-01 | 2019-03-01 | 佛山科学技术学院 | A kind of cleaning rod for oral care |
| CN110483934A (en) * | 2019-08-09 | 2019-11-22 | 宁波新安东密封保温系统有限公司 | A kind of modified EPT rubber packing material and preparation method thereof |
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