80results about How to "Play an antibacterial effect" patented technology

A coated member comprises a substrate, an antibiotic layer formed on the surface of the substrate, and an anti-fingerprint layer formed on the surface of the antibiotic layer, the antibiotic layer contains silicon oxide having nanometer pores and an antibiotic material loaded on silicon oxide, the antibiotic material contains at least one of nanometer silver ions and nanometer copper ions, and at least one of nanometer titanium dioxide, nanometer zinc oxide and nanometer copper oxide, the anti-fingerprint layer is a perfluoropolyether silane layer, and the thickness of the anti-fingerprint can realize the dissociation of antibiotic material in the antibiotic layer to the surface of the anti-fingerprint layer. The invention also provides a making method of the coated member. The surface of the coated member has good anti-pollution and antibiosis effects.

A microcapsule formaldehyde-removing agent and a preparing method thereof in the field of air purification are disclosed. The removing agent includes a core material and a wall material in a mass ratio of 1:2-6. The core material includes, by weight, 5-10 parts of tea polyphenols, 2-5 parts of aloe extract liquid, 3-5 parts of bracket plant extract liquid, 2-4 parts of Ottelia alismoides extract liquid, 5-10 parts of nanometer carbon black, 2-5 parts of nanometer silver, 2-3 parts of grape seed oil, 1-2 parts of cymbopogon citratus essential oil, 0.5-1 part of lavender essential oil, 0.5-1 part of eucalyptus essential oil, 3-10 parts of an emulsifier, 1.5-3 parts of a co-emulsifier, 1-3 parts of a dispersant and 1 part of a pH stabilizing agent. Uniformly dispersed formaldehyde-removing agent liquid particles are covered with a natural polymer film-forming material to form micro immobilized particles. Plant active components and the nanometer carbon black in the core materials are slowly released by passing through the wall material to remove formaldehyde in air, thus achieving an objective of removing formaldehyde for long term.

The invention discloses an expanded polytetrafluoroethylene artificial dura mater. The dura mater is prepared by mixing polytetrafluoroethylene and an extrusion aid. The thickness of the dura mater is 0.25-1mm, and the pore size is 0.1-1 mu m. The invention also discloses a preparation technique of the expanded polytetrafluoroethylene artificial dura mater. The preparation technique comprises the following steps: mixing, aging, paste extrusion, calendering, degreasing, longitudinal stretching, lateral stretching and sintering. By adopting the special extrusion technique and special two-way stretching technique, the microscopic sizes of the nodes and fibers are controlled to be less than the diameter or width of bacteria, so that the prepared expanded polytetrafluoroethylene artificial dura mater has the characteristics of favorable antibacterial property and antisticking property. Besides, in order to resist the intracranial pressure, the expanded polytetrafluoroethylene artificial dura mater disclosed by the invention also has the characteristic of super high thickness.

The invention discloses mass concrete and preparation and a construction process thereof, and relates to the field of concrete. The invention aims to solve the problem of cracking of concrete by improving a concrete formula and a concrete construction process. The concrete comprises the following components: in parts by weight, 170-180 parts of water, 180-185 parts of cement, 635-730 parts of medium sand, 1000-1100 parts of crushed stone with a particle size of 5-25 mm, 94-100 parts of an external doping material, 160-175 parts of mineral powder and 5.11-5.12 parts of additives, wherein the additives include a water reducing agent and a retarder. Through layered and zoned construction during construction, a plurality of stainless steel punched network pipes are inserted into the concrete after concrete construction of each layer is completed, and all from formulas to construction are improved, wherein effective improvement of the hydration peak period of the concrete and reduction of cracking phenomena after concrete solidification is performed can be achieved through addition of the retarder into the formula of the concrete, and through application of the stainless steel punched network pipes during concrete construction, the working effect of heat dissipation of the concrete can be increased, so that cracks, caused by the heat of hydration, in the concrete are further reduced.

The invention discloses a purifying agent for air purifiers and a method for preparing the purifying agent, and relates to the technical field of purifying agents. The purifying agent comprises, by weight, 55-65 parts of modified bamboo pulp fibers, 40-42 parts of nanometer bacterium removing agents, 35-40 parts of sustained-release particles, 30-35 parts of expanded vermiculite, 15-25 parts of modified attapulgite, 10-15 parts of mildew-proof and insect-proof agents and 5-7 parts of stabilizers. The purifying agent and the method have the advantages that raw materials for the purifying agent are safe and environmentally friendly, excellent effects of adsorbing toxic gas such as formaldehyde, toluene and dimethylbenzene in the air can be realized, effects of killing germs can be realized, and accordingly indoor environments can be effectively improved.

The invention discloses a xanthan gum-silver nanoparticle composite material and a preparation method of the xanthan gum-silver nanoparticle composite material, and belongs to the technical field of nanometer materials. The composite material contains xanthan gum and nano-silver, the xanthan gum with high biocompatibility serves as a carrier, the dispersibility of the nano-silver is improved, and the antibacterial property and the biocompatibility of the composite material are improved. According to the preparation method of the xanthan gum-silver nanoparticle composite material, a silver colloid is prepared in a gold colloid system, silver covers gold particles for growth, a nano-silver colloid is prepared, the size and the height of the nano-silver particles are uniform, the nano-silver particles can be uniformly dispersed in a water solution for a long time, the nano-silver particles prepared through the method and generally-prepared nano-silver represent the same property, the nano-silver particles are mixed with the xanthan gum and then uniformly distributed on the xanthan gum of a reticular structure, the dispersibility is good, and the antibacterial property can be improved.

The invention relates to an indoor environment-friendly sepiolite mud coating and belongs to the technical field of indoor decoration materials. The indoor environment-friendly sepiolite mud coating comprises the following raw materials in parts by weight: 35-50 parts of sepiolite powder, 8-12 parts of talcum powder, 5-10 parts of heavy calcium carbonate powder, 5-10 parts of titanium dioxide and8-13 parts of kieselguhr. The indoor environment-friendly sepiolite mud coating provided by the invention is a novel indoor coating prepared from sepiolite as a main raw material mixed with other environment-friendly materials; compared with a conventional coating, the coating provided by the invention can be made with water on site before coating, in addition, the coating provided by the invention brings excellent properties of the sepiolite into sufficient play, the coating is environment-friendly, odorless and good in sound and thermal insulation and in addition has certain adsorption functions, and thus the content of harmful substances such as formaldehyde in rooms can be effectively reduced; and in addition, due to addition of other raw materials, a certain antibacterial effect is achieved, and the coating is a preferred wall coating of the conventional home decoration and industrial decoration industry.

The invention belongs to the field of daily necessities for females, and particularly relates to an antibacterial sanitary towel. The antibacterial sanitary towel comprises an antibacterial layer, and the antibacterial layer is embedded into a sanitary towel body. The antibacterial layer is arranged in the sanitary towel body, and can effectively restrain bacterial reproduction and breeding in the small environment between the private part and the sanitary towel, the function of resisting bacteria is achieved, and the corresponding function is achieved for preventing and treating gynecological diseases caused by private part bacterial infection. Meanwhile, various provided preferable schemes are in cooperation, and the functions of side leakage prevention, breathability and healthcare can further be achieved.

The invention discloses a functional PE water supply pipe formula and a preparation method thereof. The PE water supply pipe formula consists of an inner layer and an outer layer; the inner layer is prepared from a composite material with the anti-corrosion and antibacterial functions; the composite material is prepared from the following ingredients in parts by weight: 100 parts of high-density PE resin, 0.2 to 1.5 parts of anti-corrosion antibacterial agents, 0.2 to 0.8 part of antioxidants and 0.5 to 2 parts of lubricating agents, the outer layer is prepared from anti-ultraviolet-aging PE modification materials; the double-layer supply and extrusion process is used for the water supply pipe production. The PE water supply pipe provided by the invention has good anti-aging, anti-corrosion and anti-bacterial performance, so that the problem of color change of the conventional water supply pipe in the sunlight for a long time is solved; the service life is prolonged; the bacterium breeding in the pipe is avoided; the guarantee is provided for the drinking water safety of people.

The application relates to a far-infrared antibacterial polyester fiber. The polyester fiber is prepared with polyester as substrate and composite filler A and composite filler B as additives by meltblending. The composite filler A consists of Al-Mg-CuO composite particles and porous ZnFe<2>O<4> nanospheres; and the composite filler B consists of MgO nanoparticles, Al<2>O<3> nanoparticles, TiO<2>nanoparticles, ZnO nanoparticles and porous ZnFe<2>O<4> nanospheres.

The invention relates to the technical field of constructional engineering, in particular to a fabricated overhead leveling floor heating module and a production method and mounting method thereof. The fabricated overhead leveling floor heating module comprises a bearing pavement panel and an adjustable support assembly, wherein the bearing pavement panel is provided with a nanocarbon crystal layer, a reflective heat conduction layer and a base layer in sequence from top to bottom; the nanocarbon crystal layer is sprayed on the surface of the reflective heat conduction layer; the reflective heat conduction layer is matched and pressed on the surface of the base layer; a splicing mechanism is arranged on the side surface of the bearing pavement panel and a groove for containing floor heating pipelines is formed in the surface of the bearing pavement panel; the adjustable support assembly comprises a base and a support column; the bottom of the support column is fixedly connected with the base; a notch for adjustment is formed in the top of the support column and a thread is arranged on the side surface of the support column; and the support column is in threaded connection with a through hole. The fabricated overhead leveling floor heating module is capable of realizing the integration of ground leveling and pipeline slotting, is light in module weight, large in strength, strongin stability and simple in mounting operation, and is capable of effectively improving the heat exchange efficiency and temperature uniformity.

The invention specifically relates to a preparation method for a degradable white cardboard applied to food packaging, belonging to the technical field of papermaking. According to the invention, a self-made mixed base material, the self-made disperse starch material and lactic acid bacteria are subjected to mixed fermentation, and a fermentation product is centrifuged to obtain a viscous precipitate; the viscous precipitate and homemade ura sedge fibers are subjected to mixing and papermaking to obtain a top paper layer; shell powder is sprayed onto the top paper layer, and then calendering is carried out to obtain the degradable white cardboard; the used ura sedge fibers can act on the cell walls and the plasmalemmas of bacteria to prevent nutrients from being transported into cells; polylactic acid contained in the white cardboard has antibacterial and mildew-resistant functions, so the white cardboard has excellent antibacterial properties; polylactic acid also has the characteristics of softness and toughness, so the bending resistance of white cardboard can be improved; and a polylactic acid main chain in the white cardboard contains easily-hydrolyzable ester bonds, and polylactic acid belongs to polyester polymer materials, so the white cardboard has good degradation performance, is of great significance in environmental protection, and shows good application prospects.

The invention discloses a preparation device of antibacterial active carbon cloth, which comprises a surface layer reel, a bottom layer reel, a winding reel, a carbon charging tank and two middle layer reels, wherein middle layer cloth pulled out of the two middle layer reels passes through the carbon charging tank and then converges to form two-layer cloth; the surface layer reel and the bottom layer reel are symmetrically arranged on the two sides of the two-layer cloth; surface cloth pulled out of the surface layer reel and bottom cloth pulled out of the bottom layer reel converge with the two-layer cloth to form four-layer cloth; and finally the four-layer cloth is wound by the winding reel. The active carbon cloth prepared by the device has functions of bacterium adsorption and control.

The invention provides high polymer fabric made of a high polymer material. The fabric is prepared through following preparation processes: A, polyester fibers, bamboo fibers and cuprammonium fibers are subjected to melting granulation, then air-jet texturing filaments are spun and woven, and grey fabric is obtained; B, the grey fabric is put in a finishing liquid for dipping, dried and cooled, and finished fabric product is obtained, wherein the finishing liquidis prepared fromcomponents as follows: 12-20 g / L of titanium dioxide, 18-32 g / L of an acrylate binder, 1-3 g / L of glycerin, 3-4 g / L of a flame retardant, 1-2 g / L of alkyl polyoxyethylene ether succinatesulfonate, 1-2.5 g / L of tribenzylpolyoxyethylenephenol ether, 8-15 g / L of cetyl sodium sulfate and 1.5-3 g / L of an antibacterial agent,the natural antibacterial agent is a plant extract prepared from cudweed,floschrysanthemi, folium artemisiaeargyi, fructusforsythiae andherbahouttuyniae in a mass ratio being (1-2):(1-3):(1-3):(1-2):(1-1.5) through mixed extraction, and density of the plant extract is 1-1.5 g / ml. The pure-natural and non-toxic antibacterial extract is utilized to perform antibacterialtreatment on the fabric, so that the antibacterial effect is realized, the ecological problem in the prior art is solved very well, and energy-saving and environment-friendly effects are realized.

The invention relates to a car door sealing strip with an antibacterial function. The car door sealing strip consists of the following components in percentage by weight: 20-40% of polyvinyl chloride (PVC), 20-30% of ethylene-propylene diene copolymer (EPDM), 10-20% of a barium zinc stabilizer, 10-20% of a plasticizer, 5-10% of an antioxidant and 10-15% of an antibacterial agent. The car door sealing strip disclosed by the invention has the advantage that a certain antibacterial effect can be achieved in a using process as the antibacterial agent is added into the original sealing strip.

The invention discloses an energy-saving insulating brick and a preparation method thereof, and relates to the technical field of insulating bricks. The energy-saving insulating brick comprises the following raw materials in parts by weight: 65 to 75 parts of ordinary Portland cement, 45 to 50 parts of modified fluorgypsum, 30 to 35 parts of fiber toughening particles, 15 to 20 parts of an aluminapowder, 15 to 20 parts of modified diatomite, 10 to 15 parts of cocoamidopropyl betaine, 5 to 10 parts of triethanolamine oleate, 5 to 10 parts of hydroxypropyl guar gum, 5 to 10 parts of nutshells,15 to 20 parts of an addition agent and 65 to 85 parts of water. The energy-saving insulating brick is high in weight, good in insulation effect and high in compressive strength.

The invention relates to the technical field of building decoration, in particular to an assembly type overhead leveling ground and a production method and a mounting method thereof. The ground comprises a blocky bearing panel and an adjustable supporting assembly; the blocky bearing panel is provided with an exhaust guide groove penetrating through the surface and multiple penetrating through holes, threads are arranged on the inner walls of the through holes, and the through holes are adjacently provided with glue injection openings; the adjustable supporting assembly comprises a base and supporting columns, the bottoms of the supporting columns are fixedly connected with the base, a groove opening allowing adjusting use is formed in the top, threads are arranged on the side faces of thesupporting columns, and the supporting columns are in threaded connection with the through holes. Rapid splicing and convenient leveling can be achieved, and the prepared blocky bearing panel is small in weight, large in strength, high in stability, good in bearing capacity, easy to mount and has the good leveling, overhanging, sound insulation, humidity insulation and heat preservation effects.

The invention discloses a vegetable oil-containing mild hand sanitizer, and belongs to the technical field of detergents. The vegetable oil-containing mild hand sanitizer is prepared from the following raw materials in parts by weight: 10 to 53 parts of a surfactant, 20 to 45 parts of vegetable oil, 1 to 26 parts of a moisturizer, 2 to 12 parts of an emulsifying agent, 1 to 7 parts of vitamins, 1to 5 parts of essential oil, 1 to 3 parts of citric acid, 1 to 5 parts of menthol, 1 to 5 parts of an aloe extract, 1 to 5 parts of decyl polyglucoside, and 1 to 5 parts of dodecyl dimethyl ammonium oxide. According to the vegetable oil-containing mild hand sanitizer, almond oil in the vegetable oil is mild in oiliness, can be used in a baby skin care product, is rich in trace elements, such as protein, mineral substances and vitamin E, which are required by human bodies, can effectively lighten skin itching and eliminate red and swollen, dryness and inflammation, and in addition, has high oxidation resistance. Most components of the vegetable oil-containing mild hand sanitizer are the vegetable oil and the surfactant which have no irritation to skin and have the effects of sterilizing andmoisturizing, so that the vegetable oil-containing mild hand sanitizer is suitable for most people.

The invention discloses strile absorbent sutures for gynaecology and obstetrics and a preparation method of the strile absorbent sutures. The strile absorbent sutures for the gynaecology and obstetrics are prepared by taking chitosan silk threads as core threads, taking modified polylactic acid silk threads as shell threads, after stranding braiding, immersing the chitosan silk threads and the modified polylactic acid silk threads into coating liquid containing calcium stearate and polylactic acid and drying the liquid. Through the preparation method, the mechanical properties and hydrophilicproperties of the polylactic acid can be improved, and the prepared sutures have high strength and good biocompatibility; chitosan in the inner part of the sutures degrades slowly, while long-term antibacterial action is achieved, the sutures can further gradually form a hollow structure, thus ingrowth and healing of tissue is promoted, and the effect of accelerating the healing of the tissue is achieved; and the overall preparation process is simple and convenient to control, and needs of practical production and application can be met.

The invention belongs to the technical field of medicines, and particularly discloses a polyvinyl alcohol / carboxymethyl chitosan nanofiber medical dressing as well as a preparation method and an application thereof. The preparation method specifically comprises the following steps of uniformly mixing polyvinyl alcohol (PVA), carboxymethyl chitosan (CMCS), periplaneta americana concentrate and water to prepare a spinning solution containing periplaneta americana active substances; and then carrying out electrostatic spinning to prepare a periplaneta americana sustained-release medical dressing.Compared with a traditional medical gauze dressing or a medical dressing prepared by using a coating method, the sustained-release nanofiber medical dressing has quite high air permeability and highporosity, so that a wound can be kept moist, and the breathing effect of cells is facilitated. The nanofibers are effective to prevent bacteria and particulates in the air from contacting the wound. Compared with the conventional medical dressing prepared by coating, the nanofiber medical dressing has high air permeability and relatively high absorption of skin exudate.

The invention discloses an antibacterial composite biological material containing agarose acetate and a preparation method thereof. An antibacterial drug is added to a biologically-inertial agarose acetate electrospun fibrous membrane as a base; hydrogen bonds on the surface of the surface drug of composite fiber can be utilized so that antibacterial particles are firmly supported to the surface of electrospun fiber; therefore, the antibacterial composite biological material containing the agarose acetate is provided. The antibacterial composite biological material can prevent nutrient supplyof healing field tissues from being affected, and normal healing mechanism of the tissues is maintained; during release of the antibacterial drug, the material can degrade and disappear; degradation products never cause toxic and harmful effects to the tissues and the body, and the material can truly promote healing of antibacterial tissues. The antibacterial composite biological material has goodmechanical properties and biological compatibility and has degrading time that matches with healing time of infected tissues; the antibacterial composite biological material is suitable for antibacterial materials, regenerative medical research and clinical practice.

The invention discloses a mask, an antibacterial melt-blown non-woven fabric and a processing method of the antibacterial melt-blown non-woven fabric, and relates to the technical field of antibacterial materials. The antibacterial melt-blown non-woven fabric is prepared from two-component fibers, the two-component fibers are composed of polypropylene and graphene, and the antibacterial melt-blownnon-woven fabric is further sprayed with a nano-silver antibacterial material. According to the antibacterial melt-blown non-woven fabric, the polypropylene-graphene double-component melt-blown fabric has high filtering performance, the service life of the mask made of the antibacterial melt-blown non-woven fabric exceeds 48 hours and is 12 times or above that of a traditional mask, and the filtering efficiency of the mask made of the antibacterial melt-blown non-woven fabric is only reduced by 4% after the mask is continuously worn for 48 hours. The nano-silver antibacterial material is sprayed on the outer layer of the melt-blown non-woven fabric, and the antibacterial effect is achieved again, so that the filtering performance of the mask made of the melt-blown non-woven fabric reachesup to 99% or above, the mask has excellent antibacterial capacity, and the service life of the mask is further prolonged.

The invention discloses corrosion-resisting antibacterial medical rubber. The corrosion-resisting antibacterial medical rubber is prepared from the following raw materials in parts by weight: 40 to 55parts of brominated butyl rubber, 13 to 16 parts of flos lonicerae extract, 10 to 15 parts of an accelerant, 22 to 28 parts of maleic anhydride, 8 to 15 parts of hydroxylamine sulphate, 7 to 16 partsof cortex phellodendri extract, 6 to 10 parts of anti-aging agent mercaptobenzimidazole, 30 to 35 parts of ethylene-ethyl acrylate copolymer, 12 to 18 parts of a plasticizer, 2.5 to 3.8 parts of a flame retardant, 2 to 8 parts of an antibacterial agent, 5 to 6 parts of a diisocyanate compound solution, 4 to 5 parts of a hydrophilic substance solution, 10 to 13 parts of an inorganic silver-zinc compound antibacterial agent, 5 to 8 parts of a nano zirconium phosphate silver-loaded antibacterial agent and 5 to 7 parts of a saturated quaternary ammonium salt solution. The surface hydrophilicity and antibacterial property of the material can be obviously improved by soaking the rubber with the hydrophilic substance solution, polyethylene glycol and methacryloyloxyethyl phosphorylcholine; by adding the ethylene-ethyl acrylate copolymer, the medical rubber has better corrosion resistance and further the service life of the rubber is prolonged.

The invention discloses a motion kneecap which comprises a kneecap body. The kneecap body is made of a Lycra cloth layer, an anti-microbial SBR neoprene layer and a nylon cloth layer; the Lycra cloth layer is attached to the surface of the anti-microbial SBR neoprene layer, and the nylon cloth layer is attached to the bottom face of the anti-microbial SBR neoprene layer; and far infrared nanometer powder is attached to the nylon cloth layer. According to the motion kneecap, the surface layer is made of Lycra cloth, so that the higher wear-resisting property is achieved, and the service life is prolonged; the middle is made of anti-microbial SBR neoprene, so that the anti-microbial effect is achieved, and the good heat preservation and protection performance is achieved; and the bottom face is made of the nylon cloth layer with the far infrared nanometer powder in an attached mode, so that the good health care effect is achieved, the structure is simple, and the motion kneecap is easy to obtain.

The invention discloses an antibacterial cool fabric which is woven by warp yarns and weft yarns, wherein the warp yarn is obtained by arranging the blended multifilament, flax multifilament and cotton multifilament at a circular proportion of 1:3:3; the blended multifilament is the long stapled cotton and superfine silver fiber blended multifilament; the specification of the multifilament is (200S / 3)-(300S / 3); the weft yarn is polypropylene monofilament with a diameter of 0.2mm; and the warp yarns and the weft yarns are woven into a composite-tissue structure. By interweaving monofilaments and multifilaments, the multifilaments all float on the whole cloth surface to realize good hand feeling; and the antibacterial cool fabric has the characteristics of low monofilament fineness, light specific gravity, high breaking strength, relatively high breaking elongation, good gloss, high humidity absorbability and permeability and the like as well as excellent wearability such as the gentle gloss of silk, the humidity absorbability and permeability of cotton fiber, the coolness of flax and the like. The mixed silver fiber is partially exposed on the fabric surface, can realize an antibacterial effect, and has good wear resistance and washing resistance.

The invention relates to the technical field of herbarium processing, and especially relates to a fresh herbarium and a preparation method thereof. The solid herbarium mainly adopts a colloidal substance to replace resin which is environmentally unfriendly and resistant to light in the prior art to serve as an embedding agent, and the embedding agent is preferably selected from carrageenan, pectin, aloe vera gel and jelly powder; antibacterial agents which are aloe extract and potassium sorbate are also added into the colloid; and the embedding agent is used for embedding the specimen plant, and then performing sealing and ultraviolet sterilization in order to achieve the effective sterilization effect, so a vacuum sterile state is formed in the specimen, specimen plants can be effectivelyprotected, and the light aging resistance effect can be achieved.

The invention discloses an expanded polytetrafluoroethylene artificial dura mater. The dura mater is prepared by mixing polytetrafluoroethylene and an extrusion aid. The thickness of the dura mater is 0.25-1mm, and the pore size is 0.1-1 mu m. The invention also discloses a preparation technique of the expanded polytetrafluoroethylene artificial dura mater. The preparation technique comprises the following steps: mixing, aging, paste extrusion, calendering, degreasing, longitudinal stretching, lateral stretching and sintering. By adopting the special extrusion technique and special two-way stretching technique, the microscopic sizes of the nodes and fibers are controlled to be less than the diameter or width of bacteria, so that the prepared expanded polytetrafluoroethylene artificial dura mater has the characteristics of favorable antibacterial property and antisticking property. Besides, in order to resist the intracranial pressure, the expanded polytetrafluoroethylene artificial dura mater disclosed by the invention also has the characteristic of super high thickness.

The invention discloses an intelligent breathing fruit and vegetable fresh-keeping film which is prepared from the following raw materials in parts by weight: 90-96.5 parts of a low-density polyethylene resin, 0.5-2 parts of a silicon dioxide opening agent, 1-2 parts of hydrochloric acid, 1-2 parts of titanium dioxide, 0.5-2 parts of N-acetamido-4-vinyl pyridine, and 0.5-2 parts of oleamide. The film belongs to the technical field of fresh-keeping, and is mainly used for packaging fruit and vegetable products; the low-density polyethylene is taken as the basic raw materials, and various conditioning components are added for modification, so that the purpose of prolonging the fresh-keeping time of the fruit and vegetable products is achieved. By adding inorganic chemical components, the air permeability of the film is improved, the breathing action is slowed down, and the fresh-keeping time is prolonged; and the intelligent breathing fruit and vegetable fresh-keeping film has the functions of air permeation balance adjustment, ethylene elimination, frosting prevention and antibiosis.

The invention relates to a sterile super-lubricity antiseep safety catheter structure and belongs to the field of medical equipment. The sterile super-lubricity antiseep safety catheter structure comprises a catheter body, an air bag and an inflating tube, wherein one end of the catheter body forms a catheter guiding head part, the other end of the catheter body forms a catheter connecting sleeve, and an air bag inflating hole is formed in a cavity wall of the catheter body. Two ends of the air bag and an outer wall of the catheter body form an integrated body, and the middle of the air bag and the outer wall of the catheter body form an inflating cavity. The inflating tube is formed on one side of the catheter connecting sleeve. The sterile super-lubricity antiseep safety catheter structure is characterized in that the diameter of a catheter connecting sleeve cavity is gradually expanded in the direction far away from the catheter body, a seal ring is formed on a cavity wall of the catheter connecting sleeve cavity, a guiding head is fixed at the tail end of the catheter guiding head part, an inflation valve matching sleeve is arranged at the tail end of the inflating tube in an expanded mode, and an inflation valve is arranged on the inflation valve matching sleeve in a matched mode and comprises a valve body and a valve. The sterile super-lubricity antiseep safety catheter structure guarantees that the expanded air bag is in good contact with an inner wall of the bladder, pain of patients is reduced, the intubation speed is improved, the sealing effect is good, convenience is provided for X-ray radiography, the antibacterial and smoothness effect is guaranteed, and the sterile super-lubricity antiseep safety catheter structure is hygienic and safe.

The invention provides a preparation method of a whitening and moisturizing facial cleanser for sensitive skin. Compared with the prior art, the whitening and moisturizing facial cleanser for sensitive skin has the beneficial effects that sodium cocoyl glycinate is used as a main surfactant, and hydrogenated lecithin is used as an auxiliary surfactant, so that the whitening and moisturizing facialcleanser for sensitive skin is good in skin adaptability, non-irritating and moderate in cleaning capacity, and is suitable for people having sensitive skin to use; SOD is added for eliminating freeradicals, so that the formation of melanin is reduced; vitamin C is added, so that melanin intermediates and melanin polymers are reduced, the formation of substances of dopa and dopaquinone is reduced, the skin is whitened in many ways, and the effect is significant; jojoba oil is added, so that the whitening and moisturizing facial cleanser for sensitive skin can soften and nourish the skin andis quite suitable for sensitive skin; giant typhonium rhizomes, rhizoma bletillae and radix ampelopsis roots are added, so that the whitening effect is further strengthened; and radix angelicae, alkanet, rhizoma polygonati odorati, lotus flowers and fresh ginger are added to achieve the efficacy of removing toxicity, diminishing inflammation and resisting bacteria.