351results about How to "High antibacterial efficiency" patented technology

The invention provides a nano-silver antibacterial fabric and a preparation method thereof. The nano-silver antibacterial fabric has the characteristics that a zinc oxide nano line grows on the fabric; and silver nano particles are deposited on the zinc oxide nano line. The zinc oxide nano line is synthesized by a solution chemical method; and the silver nano particles are deposited on the zinc oxide nano line by a simple 'immersion-illumination' method. The nano-silver antibacterial fabric prepared by the method has extremely obvious long-time antibacterial performance; the silver nano particles are small in size and cannot be accumulated; a synthesis process is environment-friendly; and the nano-silver antibacterial fabric can be recycled and reused. The nano-silver antibacterial fabric can be used for single-point water treatment to reduce microorganism content in water and can be suitable for medical surgical dressing and medical fabrics; and the nano-silver antibacterial fabric can be used as an antibacterial air filtration device for preventing bio-aerosol from being gathered on a ventilating, heating and air conditioning system.

A nitrogen doped nano-TiO2 modified photocatalytic paint with low content of volatile VOC, and high ultraviolet shielding-absorbing and antibacterial effect is prepared from silicic acrylate emulsion, nitrogen doped nano-TiO2, ordinary nano-TiO2, titanium oxide powder, kaolin, heavy and light calcium carbonate, wallastonite powder, assistant, water, ammonia water, defoaming agent and antimildew agent through proportional mixing, stirring and filtering.

The invention discloses silicon dioxide loaded nano-silver waterborne antibacterial paint and a preparation method thereof, and belongs to the field of chemical paint. The paint is prepared from the following components: water, acrylic resin, polyurethane resin, a porous silicon dioxide loaded nano-silver antibacterial agent, a dispersant, a curing agent, a de-foaming agent, a film-forming auxiliary agent and a flatting agent. According to the silicon dioxide loaded nano-silver waterborne antibacterial paint, nano-silver is loaded in porous silicon dioxide, so that the effect of protecting the nano-silver is realized; a releasing speed of the nano-silver can also be slowed down to a certain extent, so that the antibacterial time of the paint is more durable. A pore channel space is limited and a special preparation process is adopted (under the protection effect of PVP (Polyvinyl Pyrrolidone)), the size of the nano-Ag is controlled to be only 3nm to 5nm, so that the specific surface area of the nano-Ag is greatly increased. Furthermore, a special pore channel of the porous silicon dioxide has a fixation effect on the nano-Ag, so that the nano-Ag is not easy to aggregate and has good dispersity in a solution, and the antibacterial performance of the paint is improved.

The invention discloses a safe, environment-friendly and stable preparation method of a nanometer sliver colloid solution, comprising the following steps: mixing the alkylated cyclodextrin aqueous solution and the silver ammonia solution according to the volume ratio of 1:100-1:10, wherein the mass percent of the alkylated cyclodextrin aqueous solution is 0.1-10%, and the mass molar concentration of the silver ammonia solution is 0.01-1.0mol / L; and stirring for 1-120min at 10-100 DEG C to obtain the nanometer sliver colloid solution of which the average grain diameter is 1-100nm. The method of the invention has the advantages of simple preparation process and can ensure the application safety of the nanometer sliver colloid solution, and the prepared nanometer sliver colloid solution has the characteristics of good stability, small grain diameter of nanometer sliver, less dosage and high antibiosis efficiency in the function materials of the nanometer sliver.

The invention provides a method for preparing an antibacterial composition for monofilaments of toothbrushes, make-up brushes, paint brushes, civil brushes or industrial brushes. The method comprises the following steps of: (1) crushing a polymer mechanically to obtain polymer powder; and (2) mixing the polymer powder obtained in the step (1) and an antibacterial agent to obtain the antibacterial composition, wherein the antibacterial agent is a phosphate or glass micro powder of silver, zinc or a silver zinc complex. The invention also provides antibacterial agent-containing antibacterial monofilaments. The antibacterial agent is the phosphate or the glass micro powder of the silver, the zinc or the silver zinc complex, and the antibacterial effect of the antibacterial monofilaments is over 99 percent. By the method, the problem of discoloration caused by the antibacterial agent in the processing process can be solved, and the antibacterial agent can be dispersed in a resin matrix uniformly simultaneously, so the antibacterial efficiency of the antibacterial composition on ordinary bacteria is improved, and the antibacterial efficiency of the antibacterial composition on fungi is also improved simultaneously.

The invention discloses a green antimicrobial cleanser essence as well as a preparation method and application thereof. According to the invention, the green antimicrobial cleanser essence is prepared from an antimicrobial agent, 15.0-45.0% of natural surfactant, 0.1-0.3% of chelating agent, 2.0-5.0% of thickening agent and 0.3-0.9% of composite antimicrobial agent, wherein the antimicrobial agent is a composition of nano silver and natural plant extractives at a mass ratio of 1:5 to 1:1. The antimicrobial activity of the cleanser essence is greatly improved due to the antimicrobial synergistic effect of nano silver and the natural plant extractives; the cleanser essence has the following characteristics of wide antimicrobial spectrum and high antimicrobial efficiency and can be used for removing dirt and pesticide residues as well as peculiar smell while sterilizing effectively, so that the purpose of removing dirt, pesticide residues, harmful microorganisms and peculiar smell at one step is achieved. The preparation method is simple in preparation process, low in cost and capable of being applied to industrial mass production. The prepared green antimicrobial cleanser essence is high in anti-microorganism efficiency, free of toxicity and stimulation, environment friendly, bio-gradable and free of residues after being used so as to be used for cleaning dishes, fruits and vegetables.

The present application defines an antimicrobial composition comprising (a) at least two antimicrobial agents having different antimicrobial mechanisms of action and being present in amounts that together provide a synergistic antimicrobial effect or (b) an antimicrobial agent and a surface modifying agent, an antimicrobial masterbatch comprising antimicrobial composition (a) or (b) and a polymer carrier, an antimicrobial fibre composition comprising the antimicrobial masterbatch and a fibre substrate, an antimicrobial fibre comprising a fibre body or a fibre surface having the antimicrobial fibre composition, and a process for producing antimicrobial fibres.

The invention discloses a medical anti-microbial silver-plated dressing and a preparation method thereof. The preparation method of the medical anti-microbial silver-plated dressing includes steps of mixing calcium alginate fibers and cellulose fibers to prepare a dressing substrate and preparing a silver-particle plated layer on the surface of the dressing substrate by means of vacuum sputtering. The medical anti-microbial silver-plated dressing has broad-spectrum anti-microbial performance, is simple and easy in preparation method and low in cost.

The invention discloses a silicon-zinc mesoporous material silver-carrying antibacterial agent and a preparation method thereof. The preparation method comprises: stirring a polyethylene glycol-polypropylene glycol-poly(ethylene glycol) (PLA-PEG)block copolymer, deionized water and an acid, adding a silicon source and a zinc source to obtain sol-gel liquid, and sintering the sol-gel liquid to obtain the silicon-zinc mesoporous material; adding the obtained inorganic nano mesoporous material into deionized water or ethanol, adding solution of silver nitrate and drying the mesoporous material; and adding the silver-carrying mesoporous material into the deionized water solution of formaldehyde to perform a reaction, filtering the solution, and washing and drying the resulting product; or roasting the silver-carrying mesoporous material in a protective atmosphere to prepare the silver-carrying silicon-zinc mesoporous material antibacterial agent. The method is simple in preparation; as zinc oxide is also an antibacterial agent, the antibacterial active body mass content of the antibacterial agent is up to 20 percent which is far higher than that of other antibacterial agents; the antibacterial efficiency of the antibacterial agent is far better than the products of the same kinds; and the antibacterial agent can be widely used in the fields such as ceramics, plastics, textile, paint and water treatment.

This invention relates to wide band multi-layer bubble wave absorptive materials and its process method in function materials technique. This invention forms single layer by open polyurethane bubble materials and wave absorptive materials.

The invention provides a halamine antibacterial agent and a synthetic method and application thereof. The halamine antibacterial agent is a compound with a structure which is shown as a formula (I) or a formula (II). The synthetic method comprises the following steps of: reacting by taking epoxy chloropropane and cyanuric acid or a derivative of the cyanuric acid as synthetic raw materials at the temperature of between 5 and 50 DEG C for 6 to 12 hours, filtering, removing impurities to obtain a halamine antibacterial agent precursor with a structure which is shown as a formula (III) or a formula (IV), and performing halogenating reaction to obtain a finished product of the halamine antibacterial agent. According to the application of the halamine antibacterial agent to the preparation of an antibacterial material, the antibacterial material is prepared by the following steps of: treating a material to be treated by a working solution prepared from the halamine antibacterial agent precursor, taking the material out, drying, treating at the temperature of between 80 and 200 DEG C for 3 to 60 minutes, and performing halogenating reaction. According to the method, reaction condition is mild, a process is simple, and raw materials are low in cost and readily available; and the halamine antibacterial agent synthesized by the method and the halamine antibacterial agent precursor are water-soluble, high in yield, safe and non-toxic, and can be prepared into antibacterial textiles with high antibacterial performance.

The invention discloses a shrimp preservative which comprises the following basic components: 0.5-50g / L of pulullan polysaccharide, 0-1g / L of natamycin, 0-5g / L of nisin from streptococcus lactis, 0-20g / L of ascorbic acid, 0-10g / L of polyglutamic acid, 0-20g / L of other antioxidants, 0-30g / L of other antibacterial components, 0-20g / L of other gum components and water as a solvent. When shrimps are soaked, sprayed and / or rubbed with the preservative, the refreshing time of the treated shrimps can be effectively prolonged for 3-4 days. The preservative has the advantages of good filming and preservation property, high security, high antibacterial and anti-oxidation efficiency, long action time and the like.

The invention relates to a preparation method and application of an antibacterial glass coating of an antibacterial bone fracture plate. The method comprises the following steps: preparing sterile ion-containing borate bioactive glass, crushing the glass, and screening into glass powder with a certain size; adding a liquid-phase solvent, adhesive and stabilizer to the glass powder to prepare uniform glass slurry; coating the glass slurry to the surface of a titanium or titanium alloy bone fracture plate by utilizing a mechanical immersion method or a low temperature spraying method, drying with infrared ray or heat, and curing the slurry to the surface of the bone fracture plate; and volatilizing the solvent and the additives by virtue of high temperature sintering treatment, re-melting the residual glass powder to form molten glass, and adhering to the surface of the bone fracture plate to form the antibacterial glass coating capable of resisting bacteria and promoting tissue growth. The preparation method has the advantages of simple production process, easiness in operation, low cost and scale production; and the antibacterial glass coating has the functions of effective antibacterial performance and bioactivity in promotion of bone cell growth.

The invention discloses a quaternary ammonium salt group-containing halide amine polymer antibacterial agent, and a preparation method and an application thereof. The compound has a structure represented by the formula (I). The preparation method comprises the steps: with (3-acrylamidopropyl)trimethylammonium chloride as a monomer reaction raw material, sodium persulfate as an initiator and water as a solvent, carrying out a reaction, removing the solvent in the product solution, purifying, drying to obtain a precursor, then carrying out halogenation, filtration and drying to obtain the antibacterial agent finished product. The application in textile antibacterial finishing comprises placing a textile in deionized water for soaking, then placing in an antibacterial agent precursor solution, next soaking in an polymerization anionic solution having the same concentration, washing, drying, and thus completing one time assembly; repeating the above methods, totally assembling for 5-20 times, and halogenating to obtain an antibacterial fabric. The antibacterial agent has excellent antimicrobial performance, has no release of formaldehyde, and is safe and non-toxic; when the antibacterial agent is applied in the textile antibacterial finishing, the prepared antibacterial cotton fabric has good antibacterial property and high antibacterial efficiency.

The invention discloses a method for finishing fabric through plant essential oil thermosensitive liposomes. The method comprises the following steps: mixing and stirring tea tree essential oil, menthol and artemisia vulgaris oil to obtain a natural fragrant antibacterial agent; dissolving the natural fragrant antibacterial agent in a phosphate buffered solution; mixing natural phosphatide, phosphatidylcholine, glyceryl phosphatide, phosphatidyl ethanolamine, phosphatidylserine and phosphatidic acid, adding cholesterol, dissolving the mixture into chloroform, pouring into a container, and evaporating at the room temperature until a layer of uniform thin film is formed on the container wall; adding the phosphate buffered solution of the natural fragrant antibacterial agent into the container coated with the thin film in ultrasonic water bath, and performing ultrasonic oscillation to obtain a thermosensitive liposome suspension liquor; adding an adhesive into the thermosensitive liposome suspension liquor, and stirring at the room temperature until the adhesive agent is completely dissolved, so as to obtain a thermosensitive fragrant antibacterial finishing agent; immersing and rolling fabric into the finishing liquid, immersing and rolling for the second time, and finally finishing and shaping the fabric by adopting a freezing and drying method.

The invention provides a halamine antibacterial agent, its preparation method and application. The halamine antibacterial agent is a compound with a structure shown in formula (I). The preparation method consists of: in the presence of an acid-binding agent, taking cyanuric chloride or cyanuric fluoride or their derivative, and 2, 2, 6, 6-tetramethyl-4-piperidinol as synthesis raw materials to prepare a halamine antibacterial agent precursor with a structure shown in formula (II), and then reacting the precursor with a sodium hypochlorite solution to prepare a halamine antibacterial agent finished product. The halamine antibacterial agent can be applied in textile antibacterial finishing. Specifically, a textile to be treated is dipped in a finishing solution containing the halamine antibacterial agent precursor and a metal salt catalyst for finishing, and finally a halogenation reaction is carried out so as to obtain an antibacterial textile. The method provided in the invention for preparation of the halamine antibacterial agent has the advantages of low cost, simple process, low reaction temperature, no toxicity or pollution, and is in line with the requirements of ecological textile antibacterial finishing. According to the invention, the application process has the characteristics of simple operation and low reaction energy consumption, and antibacterial textiles with good antibacterial properties can be prepared.

The invention discloses an antibacterial flame-retardant ABS material and a preparation method thereof. The antibacterial flame-retardant ABS material is prepared from ABS resin, a flame-retarding agent, a coordinative flame-retarding agent, an auxiliary flame-retarding agent, a thermal stabilizer, an antibacterial master batch, a compatilizer, an antioxidant and a lubricating agent in parts by weight, wherein the antibacterial master batch is prepared from ABS and at least one of a silver ion type antibacterial agent, zinc oxide and copper oxide by a mass ratio of 10 to 1. According to the ABS material disclosed by the invention, the silver ion type antibacterial agent or the zinc oxide or the copper oxide and the ABS are used for preparing the antibacterial master batch by the mass ratio of 10 to 1, so that the silver ion type antibacterial agent or the zinc oxide or the copper oxide is effectively uniformly dispersed in the ABS resin in order to improve the antibacterial efficiency and achieve a better antibacterial effect than an antibacterial agent which is used independently; and color changes of antibacterial ABS plastic can be effectively prevented, and the antibacterial properties of the antibacterial ABS plastic can be improved.

The invention discloses an antibacterial biaxially oriented polypropylene (BOPP) film and a preparation method thereof. The antibacterial BOPP film comprises the following blended components, by weight, 100 parts of a polypropylene resin and 0.1-3 parts of a compound antibacterial agent. The compound antibacterial agent comprises montmorillonite and polyguanidinium. The polyguanidinium is coated on a surface of montmorillonite lamellas and is embedded between the montmorillonite lamellas. A weight ratio of the polyguanidinium to the montmorillonite is 3:1-1:10. The polypropylene resin is a special polypropylene resin for the BOPP. The preparation method is characterized by: mixing the components according to the ratios, or melt blending the components after mixing; carrying out casting toobtain the lamellas; carrying out biaxial stretching to obtain the antibacterial BOPP film. The antibacterial BOPP film prepared through the method has advantages of high antibacterial efficiency, low cost, innocuity and harmlessness for human body, strong water resistance and the like. The method provided by the present invention has simple production steps, and is easily applicable for industrial production.

The invention discloses an organic rare earth bacteria inhibitor, mainly, a binary or ternary compound of lanthanon and 8-Hydroxyquinoline with other organic ligand. The invention also discloses the application of the organic rare earth bacteria inhibitor in preventing the plant bacteria and pests. The plant bacteria and pests include the rice bacteria and pests, the cotton bacteria and pests, the corn bacteria and pests, the vegetable bacteria and pests, and the like. The invention widens the application range of the rare earth to the pesticide filed; secondly, the invention comprehensively takes the advantage of the bacteriostatic function of the organic ligands and the rare earth, can perform double bacteriostatic effect with high bacteriostatic effect; in addition, the dosage of the organic rare earth bacteria inhibitor is less, the toxicity is low, the effective duration is long, the medicine resistance cannot be produced, and the production cost is low.

The invention relates to a novel efficient sterilizing and bacteriostatic agent, belonging to the technical field of bacteria resistance and bacteriostasis. The novel efficient sterilizing and bacteriostatic agent mainly relates to the sterilizing and bacteriostatic effect of a hyperbranched polyolefin compound (HBP); and the hyperbranched polyolefin is applicable to the fields of various household chemicals, medicines and the like, and is the novel efficient sterilizing and bacteriostatic agent.

The invention belongs to the technical field of biological materials, and in particular relates to a preparation method for a borate antibacterial glass coating with bioactivity and application thereof. The preparation method comprises the following steps of: preparing sterilization ion-containing borate glass; smashing and screening the glass; uniformly coating the glass powder onto the surface of an implanted device; performing thermal treatment to make the glass powder have viscosity; and forming an antibacterial coating covered on the surface of the implanted device. The preparation method has the characteristics of simple equipment, easy operation and low cost. The coating of the invention has the bioactivity, can be coated on the surface of the implanted device firmly, and can effectively improve the bioactivity and the antibacterial property of conventional implanted materials.

The invention provides a manufacturing method of antibacterial ceramic tiles, and belongs to the technical field of architectural ceramics. The manufacturing method of the antibacterial ceramic tiles is characterized by comprising the following steps: printing protective glaze after inkjet printing, wherein the protective glaze comprises the following raw materials in parts by weight: 11-13 parts of Qidao clay, 11-13 parts of calcium carbonate, 4.5-5.5 parts of barium carbonate, 4.5-5.5 parts of burnt bone stone, 28.5-32.5 parts of potassium feldspar, 14-16 parts of glaze frits, 1.7-2.3 parts of zirconium silicate, 15-18 parts of albite, 1.7-2.3 parts of zinc oxide and 7-9 parts of an antibacterial agent; and in the firing step, increasing the temperature of a kiln to 835-840 DEG C, insulating for 1.5-2.5 hours, then heating to the temperature of 1,200-1,210 DEG C, insulating for 3-4 hours, and then cooling. The protective glaze is suitable for the antibacterial agent to efficiently play effects for a long time, and by a ceramic tile firing mode for the glaze, the wear-resistant and long-acting antibacterial ceramic tile can be obtained.

The invention discloses a water purifying agent containing modified diatomite. The water purifying agent is mainly prepared from the following raw materials: polymeric aluminum ferric sulfate, acrylamide, bentonite, activated carbon, a moringa extract, lignin, ferric sulfate, nano-titanium dioxide, modified diatomite, chitosan, aluminum sulfate, medical stone, biological enzyme and microorganisms. According to the water purifying agent containing modified diatomite, dissolved oxygen in a water body can be effectively increased, the water quality can be improved, organic matters in the degraded water body can be absorbed, and the antimicrobial efficiency is high; and furthermore, the safety performance is high, the toxicity and the pollution are avoided, and the stability is good. Pond water processed by virtue of the water purifying agent containing modified diatomite meets the requirements on the agricultural irrigation of crops.

The invention provides an antibacterial polyethylene composition comprising blended materials of polyethylene resin and a load-type antibacterial agent. Calculated with the weight of the polyethylene resin as 100 parts, the composition comprises 0.5-40 parts of the load-type antibacterial agent. The load-type antibacterial agent is an antibacterial agent loaded by powder rubber. The load-type antibacterial agent comprises an organic antibacterial agent and power rubber. The antibacterial agent is loaded on the powder rubber. The powder rubber comprises at least one selected from butylbenzene powder rubber and carboxyl butylbenzene powder rubber. An organic antibacterial agent which is in a liquid state in normal temperature or an organic antibacterial agent solution is well mixed with the powder rubber, and the mixture is subjected to standing, until the powder rubber absorbs the organic antibacterial agent which is in a liquid state in normal temperature or the organic antibacterial agent solution, such that the load-type antibacterial agent is obtained. With the method, the obtained antibacterial polyethylene composition has the advantages such as good antibacterial effect, good color, low cost, high safety, and the like. The preparation process is simple and is easy to operate. The method is suitable for industrialized application.

An antibacterial polypropylene material is disclosed. The antibacterial polypropylene material includes polypropylene resin and an antibacterial agent dispersed in the resin. The antibacterial agent is attapulgite-nanometer silver composite inorganic powder, wherein the mass ratio of the nanometer silver to the attapulgite is 10 / 100-100 / 100, and the particle diameter range of the nanometer silver is 3-100 nm. The composite antibacterial agent has advantages of a low using amount, a low cost, a simple preparing process, capability of improving mechanical performance, and the like, can improve antibacterial performance of the material, can increase material rigidity with a small using amount, and is an ideal polypropylene resin modifying auxiliary agent.

The invention belongs to the technical field of bio-fermentation, and in particular relates to ginkgo biloba exocarp fermentation liquid as well as a preparation method and an application thereof. The preparation method of the ginkgo biloba exocarp fermentation liquid comprises the following steps: (1) adding EM bacterium liquid to fresh ginkgo biloba fruits, uniformly stirring the EM bacterium liquid and the fresh ginkgo biloba fruits, preserving temperature and conducting fermentation; (2) after conducting the fermentation in the step (1), taking out the ginkgo biloba fruits, and collecting fermentation liquid 1; and (3) crushing exocarp of the ginkgo biloba fruits obtained in the step (2) and squeezing out kernels, collecting the ginkgo biloba exocarp, milling the ginkgo biloba exocarp into slurry in the fermentation liquid 1 obtained in the step (2), preserving heat and conducting fermentation, so that the ginkgo biloba exocarp fermentation liquid is obtained. The preparation method provided by the invention is simple to operate, free from the generation of bad smell, free from the discharge of sewage and easy for industrial production. The ginkgo biloba exocarp fermentation liquid prepared by the invention is good in sterilizing effect, rich in nutrition and free from environmental pollution, and the ginkgo biloba exocarp fermentation liquid can be applied to medicines or fertilizers.

The invention discloses a beta-cyclodextrin containing halogen amine antimicrobial agent copolymer as well as a preparation method and an application of the copolymer. The antimicrobial agent copolymer is a compound shown as a formula (I). The preparation method comprises the steps: dissolving double-bond maleic anhydride modified beta-cyclodextrin and a double-bond halogen amine compound into a mixed solution of ethanol and water, adding a redox initiator, reacting at a temperature of 35-70 DEG C under the protection of nitrogen for 3-10 hours to acquire a beta-cyclodextrin containing halogen amine antimicrobial agent copolymer precursor, and halogenating the precursor to acquire a finished product of the beta-cyclodextrin containing halogen amine antimicrobial agent copolymer. In the application of the beta-cyclodextrin containing halogen amine antimicrobial agent copolymer in preparing antibacterial nano fiber materials, the precursor is mixed with easily spun high polymer materials in proportion in a proper solvent, then nano fiber materials are acquired through electrostatic spinning, and then antibacterial nano fiber materials are acquired after halogenation. The antimicrobial agent copolymer disclosed by the invention has excellent antibacterial performance, the synthetic process is easy and controllable, the reaction time is short, the condition is mild, and the acquired nano fiber materials have good antibacterial performance and high antibacterial efficiency.

The invention provides a preparation method of an environment-friendly long-acting antibacterial polylactic acid material, which comprises the steps that an acrylamide substance is grafted to a polylactic acid molecular chain under an initiator existence condition by a radical graft polymerization method; and then amino is halogenated by a halogenating agent. In bacterium and virus killing processes of a halogen amide compound, an oxidation-state halogen atom is consumed, so that an N-X bond in an halogen amide molecule is converted into an N-H bond and the activity is lost, but the N-H bond can be oxidized into an N-C1 bond after simple rinsing of dilute-concentration bleaching liquid (with an active ingredient of hypochlorite), and a sterilization function is obtained again. Polylactic acid is grafted with acrylamide and then halogenation is performed, so that a product contains a halogen amide group, is high in antibacterial efficiency, is safe to a human body, has no toxic or side effect, is pollution-free, and can be completely applied to a food packing material and tableware.

The invention relates to a conch silver detoxicating degerming antistaling agent which is a powder combined by active calcium particulates and nanometer silver, in which the nanometer silver content is 1-25wt%; the active calcium particulates are porous ultrafine dusts with particle size of 1-90 microns made from abyssal sea conch by two calcining and activating processes; the nanometer silver is single silver particulates with particle size less than 300 nanometers which are uniformly dispersed and adsorbed in the micro pores of the active calcium particulates to form the combined powder. The conch silver detoxicating degerming antistaling agent is made from abyssal sea conch, by roasting, grinding to ultrafine dusts, calcining and activating under high temperature vacuum nitrogen protection to generate active calcium porous particulates; and dispersing by air flow to make the nanometer silver fully mixed in and adsorbed into the micro pores of the active calcium particulates. Besides the fresh-keeping, degerming and detoxicating to the fresh food, the conch silver detoxicating degerming antistaling agent can also be used for the sterilization and algae extermination of water area in water purification or aquaculture field, and achieves the advantages of safe, efficient and environment protective.

The invention discloses an antibacterial agent containing fluorinated alkyl quaternary ammonium salt, and a preparation method and an application of the antibacterial agent. The method comprises the steps that fluorinated alkyl tertiary amine is prepared by a substitution reaction, and then N-trialkoxysilane propyl-N,N-dialkyl tridecafluoro octyl ammonium halide is obtained by a quaterisation reaction. Prepared fluorinated alkyl quaternary ammonium salt serves as an antibacterial finishing agent, and has better antibacterial efficiency compared with non-fluorinated alkyl quaternary ammonium salt; a preparation reaction condition of the antibacterial agent is mild; a preparation technology is simple and convenient; raw materials are easy to obtain; industrial production, popularization and the application are facilitated; the antibacterial agent has a very high-efficiency antibacterial effect and excellent comprehensive finishing property for antibacterial finishing of fabric.