29 results about "Polyhexamethylene guanidine" patented technology

The invention provides a compound disinfectant for preventing and treating aquaculture virus diseases and a preparation method thereof. The composite disinfectant is prepared by introducing polyhexamethylene guanidine or a salt thereof, a quaternary ammonium salt compound, metal nanoparticles and an auxiliary agent into a water system as main raw materials, and is prepared by the following steps: adding a quaternary ammonium salt compound solution and a penetrating agent into a polyhexamethylene guanidine or salt solution thereof, and uniformly stirring and mixing to obtain a mixed solution A; slowly dropwise adding the metal nanoparticle dispersion liquid into the mixed solution A, starting ultrasonic treatment at the same time, and uniformly stirring and mixing to obtain a mixed solution B; dropwise adding the pH regulator solution into the mixed solution B, regulating the pH, adding the preservative solution, supplementing water, uniformly mixing, standing and curing to obtain the composite disinfectant. The compound disinfectant aims at achieving synergistic interaction, finally achieves the comprehensive prevention and treatment effects of being efficient, low in toxicity, broad in spectrum and not prone to inducing drug resistance, and particularly achieves efficient and safe prevention and control on fish, shrimp and crab virus diseases so as to meet the urgent requirement for healthy aquaculture.

The invention provides dust-free antibacterial deodorant bentonite cat litter and a preparation method thereof, and belongs to the technical field of cat litter. Firstly, a certain amount of sodium bentonite, baking soda and calcium carbonate are used for preparing bentonite cat litter, then polyvinyl alcohol and sodium carboxymethyl cellulose which have the film forming property, polyhexamethylene guanidine hydrochloride which has the bactericidal property and soybean ethyl sulfate morpholine which has the deodorization function are used for preparing the bentonite cat litter; the components are compounded to obtain a functional dust suppressant with antibacterial, deodorant and film-forming effects, the functional dust suppressant is sprayed and coated on the surface layer of the bentonite cat litter, so that the prepared dust-free antibacterial and deodorant bentonite cat litter is remarkable in deodorant and antibacterial effects and good in wear resistance, and a layer of water-soluble film is formed on the surface of the dust suppressant after the functional dust suppressant is sprayed for dust suppression treatment, so that the dust suppression effect is good. The bentonite cat litter has the advantages that the structure and the film-forming property of the surface layer of the bentonite cat litter are improved, the hardness and the wear resistance of the surface are improved, the dust suppression effect of the cat litter is obviously improved, dust is extremely low under simulated falling and transportation conditions, and the cat litter has excellent water absorption and caking performance.

The invention relates to a veterinary hoof disease prevention and treatment composition as well as a preparation method and application thereof, and aims to solve the technical problems that existing commercial hoof bath lotion is limited in sterilization effect and relatively strong in local irritation, and a safe and efficient treatment medicament for treating cow hoof warts is lacked and the like. The invention provides a veterinary composition which comprises the following active ingredients: a glycyrrhizic acid compound, didecyl methyl ammonium bromide and polyhexamethylene guanidine salt, and the three components are combined, so that the composition has an antibacterial effect and an effect of promoting skin tissue repair at the same time. A series of tests prove that the traditional Chinese medicine composition can effectively inhibit animal pathogenic bacteria, prevent and / or treat animal limb and foot diseases and promote healing and repairing of ulcer injury. The medicament disclosed by the invention is suitable for preventing and treating limb and hoof diseases in a large-scale pasture, has the characteristics of high sterilization efficiency, good safety and effective treatment, and can improve the animal hoof health management level.

Disclosed herein is a composition that contains a polyhexamethylene guanidine salt and a thermoplastic polymer. The polyhexamethylene guanidine salt is grafted to the thermoplastic polymer. The present invention also relates to a method of forming the composition and to a mixture that can be beneficially employed to form the composition. The present invention also relates to medical devices comprising or consisting of said composition or from said mixture.

The invention relates to the technical field of textile fabrics, in particular to a preparation method of a bio-based flame-retardant antibacterial textile fabric, which comprises the following steps: step 1, cleaning the textile fabric and then drying for later use; 2, sequentially preparing a solution A, a solution B and a solution C; wherein the solution A is a poly dimethyl diallyl ammonium chloride aqueous solution with the mass fraction of 3-7%; the solution B is a nucleotide salt flame retardant aqueous solution with the mass fraction of 15-30%; the solution C is a polyhexamethylene guanidine salt antibacterial agent aqueous solution with the mass fraction of 4-9%; 3, the standby textile fabric in the step 1 is sequentially subjected to A solution dipping, B solution dipping, C solution dipping and B solution dipping to form a cycle, roll compacting is conducted after each time of dipping till the pick-up rate is 90-100%, and the total number of cycles is 3-7; and drying the textile fabric to obtain the bio-based flame-retardant antibacterial textile fabric.

The invention belongs to the field of polymer separation membranes, and particularly discloses a hydrophilic antibacterial oil-water separation polyphenylene sulfide membrane material and a preparation method and application thereof, and the preparation method comprises the following steps: (S1) preparing a PPS microporous membrane by a thermally induced phase separation method; (S2) treating the PPS microporous membrane in a dilute nitric acid solution to obtain a nitric acid modified hPPS microporous membrane; (S3) dispersing CNF in water to obtain a CNF dispersion liquid; coating the surface of the hPPS membrane with the CNF dispersion liquid in a suction filtration deposition manner, and dipping the hPPS membrane in a solution containing Fe < 3 + > to obtain a CNF-hPPS membrane; and (S4) dipping the CNF-hPPS in a (hexamethyleneguanidine) hydrochloride solution to obtain the hydrophilic antibacterial oil-water separation polyphenylene sulfide membrane material. The polyphenylene sulfide micro (PPS) porous membrane is prepared by adopting a thermally induced phase separation method, and after acidizing treatment, cellulose nanofiber (CNF) and polyhexamethylene guanidine (PHMG) with specific content are combined in an ion complexing manner, so that the oil-water separation rate and antibacterial effect of the membrane are greatly improved under the condition of lower loss of membrane flux.

The application discloses a preparation method of an anti-algae-adhesion super-hydrophobic composite coating. The method comprises the following steps: uniformly dispersing epoxy resin into ester substances to obtain a mixed solution A; adding polyhexamethylene guanidine hydrochloride, polyvinylpyrrolidone, nano-TiO2, polytetrafluoroethylene micro powder, graphene oxide and gamma-aminopropyl triethoxysilane into the mixed solution A, uniformly mixing to obtain a mixed solution B; adding fluorine-containing silane and polyether amine curing agent into the mixed solution B, uniformly dispersing to obtain a mixed solution C; and spraying the mixed solution C to a substrate surface, and performing normal-temperature ventilation and drying to obtain the super-hydrophobic composite coating. The super-hydrophobic coating prepared by the method has the characteristics of low contact area with water, low viscous force and self-cleaning, and also has good anti-algae-adhesion performance, and has a wide application prospect in marine antifouling.

The invention discloses a flame-retardant antibacterial colored sea-island fiber and a preparation method thereof. The method comprises the following steps: firstly, carrying out ball-milling nanocrystallization pretreatment on an inorganic dye; melting and blending a nano inorganic dye, the dried polyethylene glycol terephthalate slices, a decabromodiphenyl ethane flame retardant and a polyhexamethylene guanidine antibacterial agent in proportion to prepare multifunctional master batches; then, mixing and granulating the master batch and polyethylene glycol terephthalate slices to obtain island component slices; and finally, by taking the slices as island components and soluble polyethylene glycol terephthalate as a sea component, carrying out sea-island composite spinning, stretching and heat setting to obtain the finished fiber. Through the nanocrystallization and two-step dispersion process, the problem that multiple functional components are uniformly dispersed in polyethylene glycol terephthalate is solved, and the obtained fiber is uniform in color and luster, high in color fastness, excellent in lasting flame retardance and antibacterial performance, excellent in comprehensive quality and suitable for the field of high-end functional textiles.

The invention provides a reactive dye salt-free dyeing method for a cotton fabric by means of oxygen bleaching, aims to integrate a desizing-scouring-bleaching process and a cationization modification process, and comprises the steps of desizing-scouring-bleaching, low-temperature activation oxygen bleaching, cationic solution dipping, dyeing and the like. A traditional oxygen bleaching process and a hydrogen peroxide-tetraacetylethylenediamine low-temperature oxidation process are combined, firstly, the raw cotton fabric is selectively oxidized, selective conversion from hydroxyl to carbonyl on the surface of cotton fiber is achieved, and meanwhile desizing, boiling-off and bleaching are conducted on the raw cotton fabric; subsequently, the oxidized carbonyl-containing cotton fabric and a polyhexamethylene guanidine hydrochloride aqueous solution are subjected to a Schiff base reaction, and cationic groups are successfully introduced to the surface of the cotton fiber, so that the dye-uptake rate and fixation rate of salt-free dyeing of the reactive dye are improved, and the modified cotton fabric is endowed with excellent mechanical strength and whiteness on the basis of the dye-uptake rate and fixation rate.

The invention discloses a breathable thermal fabric and a preparation method thereof, and relates to the field of fabrics. When the breathable warm-keeping fabric is prepared, flax short fibers are oxidized and then sequentially grafted with polyhexamethylene guanidine hydrochloride and maleic anhydride to obtain flax strips; the preparation method comprises the following steps: reacting pentaerythritol with phosphorus oxychloride, and grafting 2-(allyloxy)-4, 6-dichloro-1, 3, 5-triazine to obtain a flame retardant; uniformly mixing terephthalic acid, itaconic acid, ethylene glycol, a flame retardant and dimethyl allyl silane, reacting, and spinning to obtain a hollow polyester strip; and gilling and spinning the flax strips and the hollow polyester strips, and then finishing with dimethyl allyl silane to obtain the breathable warm-keeping fabric. The breathable and warm-keeping fabric prepared by the invention has excellent breathable, warm-keeping, antibacterial, flame-retardant, crease-resistant and mechanical properties.

The application provides a composite oilfield anti-hydrogen sulfide bactericide as well as a preparation method and application thereof. The anti-hydrogen sulfide bactericide comprises component A and component B. The component A is a bactericidal component, and the component B is an anti-hydrogen sulfide agent. The mass ratio of the component A to the component B is (1-2):(1-3). The dodecyl dimethyl benzyl ammonium chloride absorbs the cation of the ionized bacteria body, and is gathered on the cell wall to produce a room blocking effect on TGB and FB. The polyhexamethylene guanidine hydrochloride compensates for the problem that the bactericidal effect of the dodecyl dimethyl benzyl ammonium chloride on SRB is not ideal through adsorption and smothering, so that the harmful bacteria such as SRB, TGB and FB in produced water can be effectively killed. The 1,3,5-tris(hydroxyethyl)-hexahydro-sym-triazine can react with hydrogen sulfide in the produced water, and the sulfur element is bound by chemical bond to effectively reduce the hydrogen sulfide content in the produced water.

The invention relates to the field of high polymer materials, in particular to a municipal pipeline prepared from a PE recycled material and a preparation method. The modified PE material is prepared from 75-86% of a PE reclaimed material, 3-5% of a processing aid, 10-20% of a modifier and the balance of a processing aid, the modifier is prepared from a benzene ring-containing polymer, crosslinked polyethylene, phosphorylcholine, polyhexamethylene guanidine hydrochloride, environment-friendly arginine and a compatilizer according to the weight ratio of (4 to 24) to (4 to 16) to (0.4 to 2) to 1 to (1 to 2) to (1 to 2). The benzene ring-containing polymer, the crosslinked polyethylene, the phosphorylcholine, the polyhexamethylene guanidine hydrochloride, the environment-friendly arginine and the compatilizer can achieve a synergistic effect, so that the anti-fouling and antibacterial properties of the PE recycled material regeneration pipeline can be improved, and meanwhile, the physical properties and the thermal stability of the PE recycled material regeneration pipeline are further improved, so that the PE recycled material regeneration pipeline can keep better properties in a high-temperature and oil-stain environment for a long time; oil stain retention is avoided, and bacterium breeding of the pipeline is reduced.

The invention relates to the field of materials, in particular to a functional material containing nano silicon carbide and a preparation process of the functional material. The functional material containing nano silicon carbide is prepared by taking polyvinyl chloride, polycarbonate, polyethylene, modified nano silicon dioxide, catechin graft and the like as main raw materials and talcum powder, a lubricant and the like as auxiliary materials through melt extrusion. Wherein the nano silicon carbide is wrapped by a polymer, so that the nano silicon carbide has better mechanical properties. In the catechin graft, after polyhexamethylene guanidine hydrochloride is grafted on the surface of catechin, the catechin is not easy to oxidize, so that the antibacterial effect is more remarkable, finally, the functional material containing the nano silicon carbide is prepared through melt extrusion granulation with polyvinyl chloride, polycarbonate, polyethylene and the like, and the prepared functional material containing the nano silicon carbide has antibacterial property and excellent mechanical property.

The present application relates to the technical field of textile fibers, in particular to an antibacterial polyolefin elastomer fiber and a preparation method thereof, the preparation method being: mixing and granulating antibacterial polyolefin elastomer materials to obtain spinning granules; the antibacterial polyolefin elastomer materials comprising ethylene-propylene copolymer A, maleic anhydride grafted ethylene-octene copolymer B and antibacterial agent C; the antibacterial agent C comprising hydroxyl modified nano-silver, polyhexamethylene guanidine hydrochloride and silane coupling agent; and the spinning granules being subjected to melt spinning to obtain the antibacterial polyolefin elastomer fiber. The antibacterial polyolefin elastomer fiber has broad-spectrum antibacterial property, and the fiber has good mechanical properties and elasticity, and the spinning process is smooth, being suitable for industrial application. The present application has simple process, low cost and green environmental protection, and the prepared antibacterial polyolefin elastomer fiber can be applied to various scenes such as antibacterial close-to-body textiles, medical protection, baby products and the like.

The application relates to the technical field of polyurethane sponges, in particular to a polyurethane sponge for shoe materials and a preparation method thereof, the polyurethane sponge for shoe materials comprises the following raw materials in percentage by weight: a foaming agent 0.5-0.7%, toluene diisocyanate 14-16%, silicon oil 0.5-0.7%, triethylene diamine 0.4-0.6%, a tin catalyst 0.08-0.12%, an antibacterial agent 0.8-0.12%, a dispersing agent 3-5%, and the balance is polyether polyol; the antibacterial agent is prepared by the reaction of polyhexamethylene guanidine hydrochloride and a carboxyl-terminated hyperbranched polyester, and then the reaction with zinc ions and calcium ions; the polyurethane sponge has the advantages of improved antibacterial property.

The invention relates to a modified polyhexamethylene guanidine polymer plastic and a preparation method thereof, and belongs to the technical field of polymer materials. According to the invention, the heat-resistant agent is self-made and is used for modifying polyethylene, and the modified polyethylene and the modified polyhexamethylene guanidine are compounded to obtain the antibacterial high-molecular plastic; the phosphate group of the heat-resistant agent can inhibit gas-phase combustion, enhance the flame retardance of the plastic, increase the crosslinking density of modified polyethylene, and improve the high temperature resistance and mechanical properties of the plastic; according to the modified polyhexamethylene guanidine, the number of active sites on the surface of the polyhexamethylene guanidine is increased through plasma treatment, then the antibacterial ability of the modified polyhexamethylene guanidine is enhanced, moreover, the modified polyhexamethylene guanidine can also form stable hydrogen-bond interaction with phosphate groups in modified polyethylene, and the antibacterial property of the modified polyhexamethylene guanidine is improved. And the two-phase bonding capacity is enhanced, so that the overall mechanical property of the composite material is improved.

This invention relates to the field of antibacterial material application technology, specifically a method for preparing dual-targeted antibacterial and osteogenic nanomaterials for implant modification. The nanomaterials are prepared by mixing anhydrous citric acid as a carbon source and polyhexamethylene guanidine hydrochloride and diallyl dimethyl ammonium chloride as heteroatom dopant sources to provide guanidine and ammonium groups, respectively. This invention exerts stable antibacterial efficacy against six common infectious bacteria by inhibiting biofilms, disrupting bacterial membranes, and inhibiting bacterial energy metabolism, avoiding antibacterial failure and bacterial resistance risks caused by biofilms and the closed bone marrow cavity microenvironment. Simultaneously, it promotes stable osteogenic properties by promoting glutathione production, clearing ROS, and promoting mitochondrial metabolism to improve bone regeneration in the infected microenvironment, achieving a dual antibacterial and osteogenic effect, effectively solving the defects of lacking osteogenic function and insufficient biosafety.

The application belongs to the technical field of fabrics, and particularly relates to an antibacterial moisture-absorbing and air-permeable pure cotton fabric, a preparation method and application in non-allergic underwear. The application uses cotton fibers to prepare the fabric, and the fabric has good moisture absorption and air permeability. Dimethylaminoethyl methacrylate reacts with chlorinated modified nano zinc oxide under the action of a catalyst potassium iodide to generate alkenyl modified nano zinc oxide. The alkenyl modified nano zinc oxide reacts with methacryloyl ethyl sulfobetaine under the action of a Ce(IV) salt initiator under acidic conditions, and graft copolymerization occurs with cotton fibers to obtain grafted cotton fibers. The cotton fibers are introduced with an antibacterial component through graft modification treatment, and the antibacterial performance can be effectively improved. The grafted cotton fibers are first spun into pure cotton yarn, and then spun into pure cotton fabric. The pure cotton fabric is subjected to antibacterial finishing of polyhexamethylene guanidine hydrochloride, and the antibacterial performance of the pure cotton fabric is further improved.

The invention relates to the technical field of textile functional finishing agents, in particular to a deodorizing non-woven fabric finishing agent for washing clothes as well as a preparation method and application of the deodorizing non-woven fabric finishing agent. The deodorizing non-woven fabric finishing agent for clothes washing is prepared from the following components in percentage by mass: 20 to 22 percent of porous mineral adsorbent, 13 to 15 percent of organic zinc amino acid complex, 8 to 10 percent of silane coupling agent modified polyhexamethylene guanidine, 11 to 13 percent of waterborne polyurethane adhesive, 3 to 5 percent of nonionic wetting penetrant and 3 to 5 percent of softening agent. According to the deodorizing non-woven fabric finishing agent for clothes washing, the porous mineral adsorbent, the organic zinc amino acid complex and the silane coupling agent modified polyhexamethylene guanidine are used as deodorizing substances, odor is eliminated through three mechanisms of rapid capture, chemical neutralization and source inhibition, and the deodorizing effect is effectively improved. After the deodorant is applied to the non-woven fabric, the non-woven fabric has a long-term deodorization effect.

The invention discloses a biological antibacterial composition, a detergent and a preparation method thereof in the field of detergents. The biological antibacterial composition is prepared from a carboxymethyl chitosan-polyhexamethylene guanidine-azobenzene acrylate derivative, an inulin-dodecyl alcohol-vitamin E succinate derivative, sodium alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, disodium ethylene diamine tetraacetate, methylisothiazolinone, glucose oxidase and deionized water. Wherein the carboxymethyl chitosan derivative is grafted with polyhexamethylene guanidine through an amidation reaction, and then is subjected to Michael addition with azobenzene acrylate; the inulin derivative is subjected to sulfonation reaction to generate a sulfonate intermediate, the sulfonate intermediate is exchanged with dodecyl alcohol, and then the sulfonate intermediate and vitamin E succinate are prepared. The composition achieves broad-spectrum bacteriostasis through multi-target cooperation, and the detergent has efficient decontamination and low irritation and is suitable for the field of green cleaning.

The application discloses a preparation method of special calcium carbonate for sanitary materials, which comprises the following steps: (1) synthesizing a grinding aid: mixing polyhexamethylene guanidine hydrochloride PHMG and glycidyl methacrylate GMA, and reacting under heating conditions to obtain an antibacterial modifier GPHMG, then stirring and emulsifying the antibacterial modifier with an emulsifier and triethanolamine to obtain the grinding aid; (2) adding heavy calcium carbonate raw materials into a roller mill, adding the grinding aid to grind, obtaining a mixture; and finely grading the mixture to obtain powder with D90 of 7-8 microns and D50 of 3-4 microns as the special heavy calcium carbonate raw material for sanitary materials to enter an activation unit for activation treatment, thereby obtaining the special calcium carbonate for sanitary materials. The application further discloses the special calcium carbonate for sanitary materials prepared by the preparation method. The application can prepare the calcium carbonate product with antibacterial performance, realizes the development of the special pore-forming agent for sanitary materials, has good "bacteria isolation" performance, and has a wide market prospect.

The invention discloses a radiation refrigeration antibacterial composite film and a preparation method thereof, and the preparation method comprises the following steps: mixing deionized water and acetone to obtain a mixed solvent; uniformly stirring cellulose acetate, ethylene glycol, polyhexamethylene guanidine hydrochloride and the mixed solvent to obtain a mixed solution; and drying the mixed solution to obtain the radiation refrigeration antibacterial composite film. The composite film prepared by the invention not only has excellent radiation refrigeration performance and mechanical properties, but also has long-acting antibacterial ability and antioxidant ability, the radiation refrigeration effect of the composite film does not depend on additionally doped nanoparticles, the environmental pressure is small, and the composite film has wide popularization value.

The application discloses a kind of clean sterilization decontamination mildew prevention wet wipe liquid medicine and preparation method, the wet wipe liquid medicine includes cetylpyridinium chloride, benzalkonium chloride, polyhexamethylene guanidine hydrochloride, C8-C10 alkyl glycoside, propylene glycol, polyethylene glycol 400, EDTA-disodium, phenoxyethanol, avocado fruit extract, coconut essence and EDI ultrapure water, the cetylpyridinium chloride, benzalkonium chloride, polyhexamethylene guanidine hydrochloride three are compounded according to specific mass ratio, the core-shell nano bacteriostatic micelles with polyhexamethylene guanidine hydrochloride as inner core and C8-C10 alkyl glycoside as outer shell are formed in liquid medicine, and the cetylpyridinium chloride, benzalkonium chloride is adsorbed on micelle shell.

The invention discloses a method for realizing normal-temperature dyeing and wastewater treatment by a one-bath one-step method, which comprises the following steps: (1) carrying out coating treatment on a cellulose textile by adopting a cationic polyelectrolyte solution, so that the cationic polyelectrolyte forms a plurality of adsorption layers on the surface of the textile to obtain a coated textile; the cationic polyelectrolyte solution comprises a polyhexamethylene guanidine salt and / or a poly (aminopropyl) biguanide salt; and (2) putting the coated textile into an anionic dye solution for normal-temperature dyeing, taking out the obtained dyed textile, standing the remaining dye solution, and separating to obtain a treated solution. According to the invention, simultaneous dyeing and wastewater treatment can be realized; in the process, no additive needs to be added, so that subsequent wastewater treatment is really not needed, the environmental and cost pressure caused by sewage discharge in the textile printing and dyeing industry is relieved, and environmental protection is facilitated.

The application discloses a preparation method of titanium-coupled long-acting antibacterial polyester fibers. First, ultrasonic alcohol washing-high temperature alkali immersion composite pretreatment is carried out, and then titanium-based long-acting antibacterial polyester fibers are prepared. 0.5-1.5 parts by weight of titanium dioxide and 1-3 parts by weight of polyhexamethylene guanidine PHMG are taken into a jar, 95-99 parts by weight of distilled water is injected into the jar, a small amount of magnetic sub is put into the jar, and the jar is placed on a temperature-controlled magnetic stirrer to stir for 0.5-1.5 hours. Then, the polyester fibers treated by the pretreatment process are put into the jar, and normal-temperature stirring is carried out for 1-3 hours. After the reaction is completed, the polyester fibers are taken out, and normal-temperature drying is carried out, so that the titanium-coupled long-acting antibacterial polyester fibers are obtained. The preparation method is simple, green and environment-friendly, and the prepared product has long-term bacteriostatic effect.

The present application relates to the technical field of textile, and proposes a pearl cloth product dyeing and finishing process, which comprises the following steps: sequentially dyeing, squeezing water and post-finishing treatment of the pearl cloth fabric to obtain a pearl cloth product; the dyeing solution during dyeing is composed of the following components in mass percentage: 5-25% of reactive dyes, 5-11% of dyeing auxiliaries, 3-8% of pure alkali, and the balance is water; the dyeing auxiliaries are mixed by cocamide polyoxyethylene ether, polyhexamethylene guanidine and acetone. Through the above technical solution, the problem of low color fastness of the pearl cloth product after dyeing and finishing in the prior art is solved.

The invention relates to the technical field of antibacterial functional materials, in particular to an antibacterial finishing agent for a hydrophobic fabric, the antibacterial fabric and preparation and application of the antibacterial finishing agent and the antibacterial fabric, and aims to solve the technical problems that existing polyhexamethylene guanidine hydrochloride is poor in compatibility with a hydrophobic base material and prone to agglomeration due to guanidyl protonation positive electricity. The antibacterial finishing agent for the hydrophobic fabric is obtained by modifying polyhexamethylene guanidine hydrochloride with 2, 5-diformyl furan. The antibacterial fabric is obtained by soaking the hydrophobic fabric in a solvent containing the antibacterial finishing agent for the hydrophobic fabric and then drying the hydrophobic fabric. According to the invention, a dialdehyde group-furan ring synergistic structure of DFF is utilized, so that the agglomeration particle size of the product in a PP base material is reduced to 0.5-1 [mu] m, the retention rate of an antibacterial agent after 50 times of washing is greater than or equal to 80%, the antibacterial rates on escherichia coli and staphylococcus aureus are greater than 99%, and the reduction rate of breaking strength is less than 5%. The process is green, environment-friendly and easy to industrialize, and the obtained antibacterial non-woven fabric meets the sanitary material standard.

The invention relates to the technical field of composite modification of high polymer materials, in particular to an antimicrobial radiation-resistant composite material as well as a preparation method and application thereof. The invention relates to an antimicrobial radiation-resistant composite material, which is prepared from the following raw material ingredients in parts by mass: 94.0 to 98.5 parts of matrix resin, 2.0 to 4.5 parts of graphene oxide, 0.2 to 0.5 part of polyhexamethylene guanidine antibacterial agents, 0.15 to 0.6 part of radiation-resistant agents and 0 to 3 parts of auxiliary agents, and the auxiliary agents comprise coupling agents or compatilizers. The graphene oxide, the polyhexamethylene guanidine antibacterial agent, the anti-radiation agent and the auxiliary agent permeate into gaps of the matrix resin through a supercritical carbon dioxide impregnation process. The graphene oxide, the polyhexamethylene guanidine antibacterial agent, the anti-radiation agent and the auxiliary agent are permeated into gaps of the matrix resin by adopting a supercritical carbon dioxide impregnation process, so that the composite material has efficient antibacterial property, high-temperature-resistant stability and high-dose radiation resistance, the mechanical property and the anti-aging property are balanced, and the use requirements can be met.

The invention relates to the technical field of application of antibacterial materials, in particular to a preparation method of a dual-targeting antibacterial osteogenesis-promoting nano material capable of being used for implant modification. Polyhexamethylene guanidine hydrochloride and diallyldimethylammonium chloride are used as heteroatom doping sources to provide guanidyl and ammonium respectively, and the guanidyl and the ammonium are mixed to prepare the compound. According to the invention, a stable antibacterial effect is exerted on six common infectious bacteria in manners of inhibiting a biological membrane, destroying a bacterial membrane, inhibiting bacterial energy metabolism and the like, and antibacterial failure and bacterial drug resistance risks caused by the biological membrane and a closed marrow cavity microenvironment are avoided; meanwhile, by promoting generation of glutathione, removing ROS and promoting mitochondrial metabolism, stable osteogenesis promoting performance is achieved so as to improve bone regeneration in an infected microenvironment, the dual effects of resisting bacteria and promoting osteogenesis are achieved, and the defects that osteogenesis promoting functions are lacked and biological safety is insufficient are effectively overcome.