72 results about "Polyhexamethylene guanidine" patented technology

The invention discloses a grafted antibacterial and deodorant function integrated fabric and a preparation method thereof.The preparation method comprises the steps that guanidine hydrochloride and hexamethylenamine are dissolved in N, N-dimethylformamide to obtain a clear solution, the clear solution reacts with polyethylene glycol to obtain polyhexamethyleneguanidine hydrochloride; the preparation method comprises the following steps: heating an absolute ethyl alcohol solution of polyhexamethylene guanidine hydrochloride and epoxypropane, and then adding triethylamine to obtain a PHMG-based antibacterial agent; the preparation method comprises the following steps: adding a PHMG-based antibacterial agent into an aqueous solution of an organic acid deodorant at 60-70 DEG C, uniformly mixing to obtain a mixed solution, adding a catalyst into the mixed solution, and adjusting the pH value to 5-6 to obtain an antibacterial and deodorizing function integrated mixed solution; and dipping the desized fabric in a solvent containing the antibacterial and deodorizing integrated mixed solution, drying, and carrying out heat treatment. According to the invention, a stable combination effect can be achieved between functional components and the fabric, and long-acting antibacterial, deodorizing and washing-resistant properties can be achieved at the same time.

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 discloses a preparation method of an antibacterial and cell adhesion promoting orthopedic implant, which comprises the following steps: 1) preparing an aqueous solution of a polyphenol compound, adding polyhexamethylene guanidine hydrochloride and arginine-glycine-aspartic acid into the single aqueous solution, and uniformly stirring to obtain a mixture; the mass concentration ratio of the polyhexamethylene guanidine hydrochloride to the arginine-glycine-aspartic acid is (50: 1)-(200: 1); 2) soaking an implant base material in the solution at room temperature to react for 12-24 hours; and (3) after cleaning, obtaining the antibacterial and cell adhesion promoting orthopedic implant. According to the invention, competitive growth of bacteria and cells is realized: cells gt; and growth of bacteria. The win-win situation of resisting bacteria and promoting adhesion and osteogenesis is realized, and the problem of implant loosening caused by infection in orthopedic surgery can be reduced to a certain extent.

The invention provides a preparation method, a product and application of a toughened and antibacterial PLA-based melt-blown non-woven material, and belongs to the technical field of spinning. The toughened and antibacterial PLA-based master batch disclosed by the invention is prepared from the following raw material components in parts by mass: 84 to 90 parts of polylactic resin, 4 parts of methyl methacrylate-butadiene-styrene copolymer, 1 part of nano zinc oxide, 0.5 part of polyhexamethylene guanidine hydrochloride, 4 to 10 parts of polyethylene glycol and 0.5 part of C1A type compatilizer. And melting and spinning the toughened and antibacterial PLA-based master batch, and sequentially carrying out hot pressing treatment and corona electret treatment to obtain the toughened and antibacterial PLA-based melt-blown non-woven material. The PLA-based melt-blown non-woven material provided by the invention has good antibacterial property and mechanical property, and has relatively strong market competitiveness and relatively good industrialization prospect.

The present invention relates to the field of fabric technology, and discloses an antibacterial and deodorizing nylon fabric and a preparation method thereof. The preparation method of the antibacterial and deodorizing nylon fabric comprises the following steps: reacting mercaptoethylamine with eugenol to obtain an intermediate product; modifying nano-titanium dioxide with a silane coupling agent KH560 and the intermediate product in sequence, and then mixing with nylon 56, ethylene-methyl acrylate-glycidyl methacrylate terpolymer, and polyhexamethylene guanidine; co-extruding, pelletizing, and melt spinning to obtain modified bio-based nylon 56 filaments; soaking the modified bio-based nylon 56 filaments in a polyacrylic acid / water solution and weaving them into bio-based nylon 56 fabric; and treating the bio-based nylon 56 fabric with an antibacterial and deodorizing finishing solution to obtain the antibacterial and deodorizing nylon fabric. The antibacterial and deodorizing nylon fabric of the present invention has excellent antibacterial and deodorizing properties and washability.

The invention relates to the technical field of papermaking, in particular to high-pressure-resistance corrugated board body paper and a production process thereof. The preparation method comprises the following steps: firstly, carrying out graft modification on diatomite by adopting 3-glycidyl ether oxypropyl triethoxy silane, then uniformly dispersing the diatomite in a polyhexamethylene guanidine salt aqueous solution, and mixing and stirring so that the polyhexamethylene guanidine salt is uniformly dispersed and attached to the surface and the porous structure of the diatomite; and finally, the antibacterial agent is successfully'grafted 'on the surface of the diatomite through 3-glycidyl ether oxypropyl triethoxy silane, and a three-dimensional antibacterial network is formed on the surface of the diatomite, so that the antibacterial performance of the functional additive is effectively ensured under the synergistic cooperation of the diatomite, the polyhexamethylene guanidine salt and the antibacterial agent. As the raw material of the corrugated board body paper, the antibacterial property is remarkably improved, and the service life is prolonged to a certain extent; in addition, the use of the fiber reinforcements can effectively improve the mechanical properties of the corrugated board body paper, and effectively ensure the quality of the corrugated board body paper.

The invention discloses a preparation method of a high-elasticity antibacterial trampoline net, and relates to the technical field of fibers. According to the preparation method, firstly, 2-hydroxyethyl triethylenediamine reacts with guanidine hydrochloride to prepare polyhexamethylene guanidine with hydroxyl groups, the hydroxyl groups on the polyhexamethylene guanidine are combined with graphene quantum dots to prepare a composite filler, the composite filler is added into outer-layer fibers, and while the agglomeration phenomenon of the graphene quantum dots is reduced, the composite filler cooperates with the graphene quantum dots to physically cut bacteria and perform chemical action to resist bacteria at the same time; secondly, the trampoline net is formed by weaving double-layer fibers serving as raw materials; the outer layer is a three-dimensional network cross-linked structure syndiotactic polypropylene fiber added with sodium carboxymethyl cellulose, and has high elasticity and a binding site of the composite filler, so that the composite filler is stable and not easy to break; the inner-layer fiber is hard elastic modified polypropylene fiber, polypropylene is grafted with maleic anhydride and then is blended with nylon-11, the hard elastic performance of the inner-layer fiber is improved by improving technological parameters, and the inner-layer fiber serves as the inner-layer fiber to support the strength of a trampoline net. The trampoline net prepared by the invention has the effects of high elasticity and antibiosis.

The invention discloses an antibacterial modified lyocell fiber fabric and a preparation method thereof, and the preparation method comprises the following steps: cutting a lyocell fiber fabric into a certain size, and placing the cut lyocell fiber fabric in a eutectic solvent for pretreatment; and after the pretreatment is finished, adding an antibacterial agent into the deep-eutectic solvent, then adding a coupling agent, carrying out graft modification, after the reaction is finished, taking out, washing with deionized water, and finally drying to obtain the antibacterial modified lyocell fiber fabric. According to the method, the lyocell fiber fabric is used as a reaction raw material, polyhexamethylene guanidine hydrochloride is used as an antibacterial agent, glutaraldehyde is used as a coupling agent, a choline chloride-urea eutectic solvent is used as a pretreatment solvent and a subsequent reaction medium, the lyocell fiber fabric is pretreated in the eutectic solvent, the fiber surface is damaged, more active hydroxyl groups are exposed, and the surface of the fiber is subjected to surface modification; and adding a coupling agent and an antibacterial agent, so that the polyhexamethylene guanidine hydrochloride is grafted on the lyocell fiber fabric, and the antibacterial lyocell fiber fabric which is excellent in antibacterial performance, long-acting and washable is obtained.

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.

The invention belongs to the technical field of curing adhesives, and provides a UV photocuring adhesive and a preparation method thereof, the UV photocuring adhesive comprises the following raw materials by weight: 20-35 parts of a hard monomer, 30-55 parts of a soft monomer, 6-10 parts of modified zinc oxide, 20-35 parts of an active diluent, 1-5 parts of a photoinitiator, and 0.1-1 part of an antifoaming agent; the preparation method of the modified zinc oxide comprises the following steps: adding epoxidized zinc oxide and polyhexamethylene guanidine hydrochloride into deionized water, performing ultrasonic dispersion, stirring, filtering, washing and drying to obtain the modified zinc oxide. The UV photocuring adhesive provided by the invention has high refractive index, excellent mechanical strength and antibacterial property, and has excellent application prospects in the fields of optical lenses, imaging devices and the like.

The invention relates to a bacteriostatic and antibacterial Yi medicine formula and a production process thereof, and belongs to the technical field of medicine preparation, the bacteriostatic and antibacterial Yi medicine formula comprises the following raw materials by mass: 80-100 parts of sophora flavescens, 80-100 parts of garden balsam stem, 80-100 parts of sambucus adnata, 80-100 parts of senecio scandens, 5-8 parts of a system stabilizer, 2000-3000 parts of drinking water, 1-6 parts of essence and 1-2 parts of a composite strain; wherein the system stabilizer comprises polyhexamethylene guanidine, xylooligosaccharide and lipidosome. The traditional Chinese medicinal materials such as radix sophorae flavescentis and garden balsam stem are combined for synergism and antibiosis, the polyhexamethylene guanidine, the xylooligosaccharide and the lipidosome are matched for stabilizing a system, lactobacillus plantarum and bifidobacterium adolescentis composite strains are utilized for fermentation, the lipidosome improves the extraction efficiency, and all the parts have a synergistic effect, so that the antibacterial effect, the stability and the health-care function of the antibacterial liquid are jointly improved.

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 technical field of medical materials, and discloses antibacterial silica gel as well as a preparation method and application thereof. The antibacterial silica gel comprises a silica gel substrate and a copolymer coating on the surface of the silica gel substrate, the copolymer coating is grafted with polyhexamethylene guanidine biguanide; and the copolymer coating comprises an isooctyl acrylate structure and a maleic anhydride structure. The antibacterial silica gel provided by the invention has good antibacterial performance, and further has high tensile strength and tear strength.

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 preparation method and application of an antibacterial salt-resistant hydrogel / pulverized coal photo-thermal composite material, and belongs to the technical field of seawater desalination treatment.The preparation method comprises the following steps that corn starch, polyhexamethylene guanidine hydrochloride PHMG, glycerin and deionized water are mixed and put into an internal mixer to be subjected to melt blending, PHMG-g-starch is obtained, and the PHMG-g-starch is added into the internal mixer to be subjected to melt blending; the preparation method comprises the following steps: uniformly stirring and dissolving lignite powder, PHMG-g-starch and polyvinyl alcohol in deionized water, adding glutaraldehyde and a hydrochloric acid aqueous solution, uniformly stirring, then transferring the solution to a mold to form PVA / antibacterial starch / pulverized coal composite hydrogel, freezing the PVA / antibacterial starch / pulverized coal composite hydrogel with liquid nitrogen, unfreezing with deionized water, and drying to obtain the antibacterial modified lignite powder hydrogel. And repeatedly freezing and thawing to obtain the antibacterial salt-resistant hydrogel / pulverized coal photo-thermal composite material. According to the preparation method and application of the antibacterial salt-resistant hydrogel / pulverized coal photo-thermal composite material, on one hand, the long-time working stability of the material during seawater desalination can be improved, and on the other hand, green and sustainable application of a coal material is expected to be achieved.

The invention relates to the technical field of paper pulp molded products, in particular to a preparation method of a paper pulp molded comb, which is characterized in that mixed wood pulp fibers and bamboo pulp fibers are treated by alkali liquor, so that the porosity of the fibers and the activity of groups on the surfaces of the fibers can be improved; a dopamine cross-linking layer is formed on the surface of the fiber dispersed with the polydopamine, so that the polydopamine plays a role of an adhesive, and the palm wax with a hydrophobic effect forms a hydrophobic film on the surface of the fiber, so that the prepared paper pulp base material has relatively good hydrophobicity; secondly, the starch is modified by using polyhexamethylene guanidine hydrochloride, and the modified starch is used for preparing the molded pulp comb, so that the comb has an antibacterial property, which is of great significance in reducing bacteria breeding in the use process of the comb and protecting the health of a user, and the performance of the modified starch is also improved; the durability of the molded pulp comb is enhanced, and the molded pulp comb is not prone to damage or deformation in the using process.

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 discloses a grafted long-acting and washable antibacterial fabric and a preparation method thereof, and the preparation method comprises the following steps: carrying out chemical modification on polyhexamethylene guanidine hydrochloride through epoxide to prepare a PHMG-based antibacterial agent; the fabric is soaked in an N, N-dimethylformamide solution containing the PHMG-based antibacterial agent, the PHMG-based antibacterial agent reacts with the fabric, and the grafted long-acting and washable antibacterial fabric is obtained. The PHMG-based antibacterial agent is combined to the surface of the fabric through a chemical grafting method, so that the PHMG-based antibacterial agent and the fabric have stable binding force, and the long-acting antibacterial function and washing resistance are achieved at the same time.

The invention relates to the technical field of flame retardance and antibiosis, in particular to a flame-retardant and antibacterial finishing agent for cotton and preparation and application of the flame-retardant and antibacterial finishing agent. The preparation method comprises the following steps: firstly, dissolving polyhexamethylene guanidine hydrochloride and an epoxy compound, uniformly mixing, reacting, and post-treating to obtain a first intermediate; uniformly mixing the first intermediate with phosphoric acid in an inert atmosphere, and reacting to obtain a second intermediate; and finally, uniformly mixing the second intermediate with urea in an inert atmosphere, and reacting to obtain the flame-retardant antibacterial finishing agent for cotton. According to the flame-retardant antibacterial finishing agent for cotton provided by the invention, on the basis that the excellent bactericidal property of guanidine hydrochloride is fully exerted, the ammonium phosphate group enables cotton fabrics to be more easily dehydrated and carbonized, the cotton fabrics are endowed with excellent flame-retardant property, and the finishing agent has the advantage of washing resistance due to the formation of phosphate bonds.

According to the printing wood pulp spunlace non-woven fabric and the preparation method, the color developing fiber layer design can achieve the effect that a color developing factor indicates the cleaning degree, and the wiping effect is not affected in a wet state; the water absorption layer can play a role in rapidly absorbing water after the non-woven fabric is in contact with the skin; the reinforcing layer is designed in the middle of the whole structure and has a good structure supporting effect, and the fiber strength of the reinforcing layer can enhance the whole mechanical practical effect; the spunlace non-woven fabric layer is designed by adopting modified wood pulp fibers, the elasticity, compactness and moisturizing effect of collagen are utilized, moisture can be further absorbed, the overall form is kept, the rice hull powder and the bamboo powder are wood fibers essentially, the moisture absorption effect is good, and the advantages of being environmentally friendly and biodegradable are achieved. The spunlace non-woven fabric provided by the invention also adopts a working solution impregnation process taking polyhexamethylene guanidine hydrochloride as a main body, so that the spunlace non-woven fabric has better antibacterial performance and can better meet the use requirements of consumers.

Disclosed are a modified polyvinyl alcohol starch film and a preparation method. The raw material for preparing the film includes, in a weight proportion, 30-120 parts by weight of starch, 60-100 parts polyvinyl alcohol, 10-30 parts plasticizer, 0.1-20 parts modified aluminosilicate crystals, 0.5-10 parts processing aids, 0.1-10 parts polyhexamethylene guanidine hydrochloride, and 0.01-0.2 parts hydroxy ethyl methacrylate. The modified polyvinyl alcohol starch film can be better prepared utilizing the modified polyvinyl alcohol starch film and preparation method disclosed herein. Polyvinyl alcohol starch itself is a hygroscopic material and can absorb moisture in the air which becomes slimy. In weather with extremely high ambient humidity such as during damp seasons, such film may even directly dissolve, causing the contents to leak. The modified polyvinyl alcohol starch film prepared as disclosed herein is water-resistant and is not susceptible to moisture absorption and exudation due to the influence of ambient temperature and humidity.

This invention relates to the field of functional coating technology, and discloses a long-lasting antifouling polyvinyl alcohol film, its preparation method, and its application. The preparation includes the following steps: Step 1, dissolving an antibacterial agent and a polysaccharide in a solvent and reacting at room temperature for 10-48 hours, followed by dialysis to obtain an antibacterial powder; then mixing the antibacterial powder and dopamine in a solvent for polymerization, and dialysis the reaction solution to obtain a modified antibacterial agent; Step 2, dissolving the modified antibacterial agent and polyvinyl alcohol in a solvent, mixing, and coating the mixture onto a substrate to obtain the polyvinyl alcohol film; the antibacterial agent is polyhexamethylene guanidine and / or polyethyleneimine; the polysaccharide is oxidized dextran or oxidized hyaluronic acid. This invention utilizes the excellent film-forming properties and abundant hydroxyl functional groups of polyvinyl alcohol, using dopamine as a linker to form hydrogen bonds with various antibacterial agents and polysaccharides, thus subjecting the antibacterial agents to more chemical bond constraints and limiting their release rate, thereby achieving long-lasting antifouling effect of the film.

The invention provides a mixture containing microcapsules, a preparation method of the mixture and a nursing pad, and belongs to the technical field of medical monitoring nursing materials. Methyl red and bromothymol blue in the microcapsule-containing mixture provided by the invention are acid-base indicators, so that the nursing pad has a pH value indication effect; the persimmon extract has antibacterial and deodorizing effects; the polyhexamethylene guanidine has a broad-spectrum antibacterial effect; the polyethylene glycol has good solubility, lubricity, moisture retention and the like, so that the solubility, the stability and the bioavailability of the raw materials are improved; part of substances (methyl red, bromothymol blue, persimmon extract, polyhexamethylene guanidine and polyethylene glycol) in the raw materials can be contained in hydrophobic cavities of cyclodextrine to form a microcapsule structure, so that the stability and dispersity of the raw materials are improved, slow and continuous release is realized, the nursing pad has long-time antibacterial and deodorant effects, and the service life of the nursing pad is prolonged. And the color developing uniformity of the nursing pad can be improved.

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 present invention relates to a nano medical gel dressing and a preparation method thereof. Gelatin, deionized water, polyethylene glycol, modified titanium dioxide, and sodium alginate are used as raw materials. After mixing, a medical dressing gel is obtained through crosslinking. The raw materials used in the present invention are non-toxic and harmless, have good biocompatibility, can form a film to cover the wound surface, play a physical protection role, reduce external stimulation to the wound surface, and thus promote tissue repair. The formed three-dimensional network structure has good stability, excellent water absorption and storage effects, strong drug loading capacity. Nano titanium dioxide and polyhexamethylene guanidine improve the antibacterial efficiency and persistence through synergistic antibacterial effects, achieving the purpose of rapid sterilization. At the same time, the overall density of the gel increases, the polymer entanglement is tighter, the compressive strength is improved, and at the same time, the tensile strength and elongation at break are increased, and the mechanical properties are excellent.

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.