1555results about How to "Bacteriostatic" patented technology

The invention relates to an antibacterium nano fiber material and a preparation method thereof; the material comprises polymer superfine fiber and antibacterial agent, and the weight ratio is 60 to 98: 2 to 40; the preparation method comprises the following steps: (1) the antibacterial agent is dissolved in distilled water to prepare solution; the polymer superfine fiber is dissolved in methylene dichloride or chloroform organic solvent, emulsifier is added to be mixed evenly, to obtain solution which is dispersed evenly; (2) the two types of solution are mixed to obtain even water-in-oil W/O latex, and then electrostatic spinning is conducted to the latex, to obtain the antibacterium nano fiber material. The nano fiber material has good ventilation property and filterability, still has bacteriostasis and sterilization functions for a long time after stably releasing the antibacterial agent, has simple preparation method, adopts the biodegradable and bioabsorbable polymer as carrier materials, can be absorbed by the human body after fully releasing, is not left, does not need secondary operation and has no side effect.

The present invention belongs to the field of radiation resisting technology, and is especially one kind of nanometer wave absorbing fiber. The nanometer wave absorbing fiber consists of nanometer wave absorbing particle of 1-100 nm diameter of fine fiber of 30-2000 nm diameter in the weight ratio of 3-35 to 65-97. The nanometer wave absorbing fiber has wide wave absorbing range, powerful wave absorbing capacity, lasting wave absorbing effect and high flexibility. It has wave absorbing function, as well as antistatic, bacteriostasis, biochemical protection and other functions.

The invention relates to a yarn, especially the manufacturing method for blended yarn of chitin fiber, alginate fiber and tencel fiber, and the application. The blended yarn comprises 5-30 by wt of chitin fiber, 5-40 by wt of alginate fiber and 30-70 by wt of tencel fiber. Merits of invention are that (1) produced blended yarn and the product is environmental protection and degradation material; (2) produced blended yarn and the product is washing resistance and long time for medical and health efficacy; (3) the product is provided with the health action of bacteriostasis, diminishing inflammation, deodorization and so on, and the antibacterial ratio for staphylococcus aureus and Klebsiella pneumoniae bacterium can achieve the standard of national ministry of health; (4) the product is provided with wide application, it can be made into knitting, woven and non-woven fabrics; it can not only be applied in textile for medical treatment but also for ordinary clothes.

The invention discloses a glaze which can generate negative ion and is characterized in that: the prescription of the glaze also contains a stimulating material that can generate tourmaline microcrystalline structures and an energy transferring material. The main composing scope (proportion by weight) of the prescription of the glaze is as follows: SiO2: 40 percent to 70 percent, Al2O3: 5 percent to 15 percent, K2O+Na2O: 5 percent to 10 percent, CaO: 0.1 percent to 12 percent, MgO: 0.1 percent to 10 percent, ZnO: 0.1 percent to 10 percent, B2O3: 0.1 percent to 10 percent; the stimulating material: 0.1 percent to 10 percent and the energy transferring material: 0.1 percent to 10 percent. The preparation method of the invention comprises the following steps: first, fusion cakes is prepared; the materials of the prescription are mixed in mixture ratio and fused and then quenched rapidly to prepare into the fusion cakes; second, sintering is carried out after the fusion cakes are prepared; finally, finished products are obtained by grinding. The application method of the glaze is that: 2 percent to 15 percent of the glaze is added to a glaze of a building sanitary ceramics and goes through glaze application and then is sintered into glaze at 800 DEG C to 1300 DEG C. The glaze of the invention has the advantages of having good release effect of the negative ion, and being environmental-friendly, etc.

The invention discloses a nano-silver porous silicone rubber/polyurethane-containing double-layer artificial skin and a preparation method thereof. The nano-silver porous silicone rubber/polyurethane-containing double-layer artificial skin is characterized in that the artificial skin contains a dermis and epidermis double-layer structure; a dermis layer is prepared from loose porous polyurethane; an epidermis layer is prepared from antibacterial agent-containing silicone rubber. A preparation method of the dermis layer comprises the following steps: dissolving the polyurethane, adding a pore-foaming agent, defoaming, carrying out curtain coating so as to form a film, volatilizing a solvent, soaking so as to leach out the pore-foaming agent, and drying so as to obtain a porous polyurethane film. A preparation method of the epidermis layer comprises the following steps: dissolving a silicone rubber precursor, carrying out ultrasonic dispersion on a nano-silver solution, adding the pore-foaming agent, defoaming, carrying out blade coating or curtain coating so as to form a film, volatilizing a solvent, curing so as to obtain an embryonic film, soaking so as to leach out the pore-foaming agent, and drying so as to obtain a silicone rubber microporous film. The preparation method of the double-layer artificial skin comprises the following steps: coating the polyurethane film with polyvinyl alcohol, acid liquor and a crosslinking agent, then covering the polyurethane film by using the silicone rubber film, volatilizing a solvent, and carrying out heat treatment so as to obtain the double-layer artificial skin. The nano-silver porous silicone rubber/polyurethane-containing double-layer artificial skin has the effects of water resistance, air permeability, bacterial inhibition, virus killing and effective absorption of hydrops.

The invention relates to the field of fine chemical engineering, in particular to a persimmon peel extractive, an extraction method thereof and a formaldehyde-removal coating containing persimmon peel extractive. The persimmon peel extractive is characterized in that the persimmon peel is dried, smashed and screened to obtain the dry powder of the persimmon peel; and then, the dry powder of the persimmon peel is extracted by acetone to obtain the persimmon peel extractive. The coating comprises the persimmon peel extractive. The coating provided by the invention does not release formaldehyde and has low content of volatile organic compounds (VOC), and the quality conforms to the national standard. Experiments prove that the coating provided by the invention can be used for effectively inhibiting bacteria of which the bacteria inhibition rate is more than 99.99%, and formaldehyde strainaway rate is 93.16-95.97%. The interiro wall latex paint provided by the invention has the strainaway rate for VOC is 68.79-73.17%, wherein the strainaway rate for benzene is 63.14-73.06%, and thus the persimmon peel extractive can effectively and continuously remove formaldehyde in the air and other volatile organic compound airs (VOC).

The invention discloses a blueberry tablet and a preparation method thereof. The main compositions of the blueberry tablet are blueberry powder, carrot powder, medlar powder and chrysanthemum powder, and the weight ratio of each composition is 30-700: 100-300: 100-300: 50-150 according to the former sequence; the blueberry tablet can release asthenopia and has the effect of having relatively good health care function on the damnification of retina and lens of eyes and the cataract caused by that the lens become thick owning to the oxidation of free radical, glaucoma, retinitis, etc. Meanwhile, the blueberry tablet also has the advantages of being convenient for carrying and taking as well as being capable of being quantified for taking according to needs, etc.

The invention relates to a nano preservative film for preventing edible fungus from deterioration and application thereof, and a preparation method and application thereof, belonging to the technical field of agricultural product storage processing. The preparation method comprises the following steps: taking 15 wt% of nano powder (30% of nano silver, 35% of nano titanium dioxide, 25% of nano attapulgite and 10% of nano silicon dioxide), 45 wt% of low density polyethylene, 22 wt% of low density linear polyethylene, 10 wt% of dispersing agent, 5 wt% of lubricant and 2 wt% of coupling agent, evenly mixing, extruding, cooling and carrying out set cutting to obtain a nano master batch; and taking 7.5 wt% of nano master batch, 8 wt% of antifogging agent master batch and 84.5 wt% of low density linear polyethylene, carrying out hot melt, evenly mixing, and running to form the nano preservative film with the thickness of 18 mu m. The nano preservative film is used for packaging edible fungus to form a high-humidity low-oxygen environment; the lower spoilage microorganism activity and ethylene content can effectively inhibit the after growth, deterioration and other phenomena of the edible fungus, effectively maintain the storage quality and enhance the commodity value of the edible fungus; and thus, the nano preservative film has wide market prospects.

The present invention discloses one kind of functional Tuomalin fabric and its preparation process. The functional Tuomalin fabric has Tuomalin grains of 0.1-0.5 micron size in at least one side of the fabric and/or between fibers and yarns, and the Tuomalin grains accounts for 1-8 wt% of the fabric. The functional Tuomalin fabric of the present invention can improve and regulate body's microcirculation, activate cell, promote metabolism, raise immunity, purify blood, purify air and eliminate bad smell, and has many other health functions.

The invention discloses an anti-icing cable. The cable comprises a core, a shielding layer and an anti-icing layer arranged in sequence from inside to outside, wherein the anti-icing layer comprises the following raw materials by weight: 60-75 parts of fluorosilicon resin, 20-30 parts of methyl vinyl silicone rubber, 10-15 parts of SiO2-glass fiber gel, 5-8 parts of polypropylene fiber powder, 3-5 parts of nano SiO2, 4-6 parts of nano TiO2, 0.5-1 part of a dispersing agent, 0.5-1.5 parts of a flame retardant, 1-2 parts of a silane coupling agent and 1-2 parts of an antioxidant. The anti-icing cable has excellent hydrophobic property and anti-icing performance, and is excellent in insulating performance, high in compressive strength, high in flexibility and anti-aging; and the anti-icing layer of the anti-icing cable can replace the insulating layer in the cable and a sheath outside the cable, so that the cable mass is lowered and the service life of the cable is prolonged.

Provided is a pig forage improving meat quality. The pig forage is characterized in that the pig forage is composed of the following ingredients, by weight, 30 parts of corn flour, 20 parts of puffed corn, 15 parts of sorghum, 15 parts of soybean meal, 15 parts of wheat flour, 10 parts of wheat bran, 0.1 part of choline chloride, 0.1 part of methionine, 0.1 part of threonine, 0.5 part of lysine, 0.2 part of salt, 1 part of Chinese herbal medicine materials, 0.15 part of microecologics, 0.15 part of vitamin premix, 0.3 part of trace element premix and 0.02 part of compound enzyme preparation. Based on the safe and relieved principles, trace elements, vitamins and functional substances are blended with energy raw materials, protein raw materials, amino acids and the like according to certain ratios, and a pig mixed forage promoting growth, lowering material consumption, raising the lean meat percentage and improving meat quality is developed.

The invention provides an externally-used pharmaceutical composition for vaginal sanitation and treating gynaecologic diseases and its preparing process, wherein the medicament is prepared from bee glue extract, oil of aromatic turmeric, alkanna tinctoria extract and purple perilla seed as raw material through steps of supercritical CO2 separation and abstraction, molecular distillation, low-temperature sterilization and centrifugation, sound film separation. The medicament can be made into bottle-packed preparations or soft capsules.

The invention provides an anti-side leakage sanitary napkin, which includes a surface non-woven fabric and a bottom impermeable membrane disposed from the inside out. The surface non-woven fabric has a three-piece structure, the intermediate piece of surface non-woven fabric and the two-wing surface non-woven fabrics are sticked together, and the space between the intermediate piece of surface non-woven fabric and the bottom impermeable membrane is filled with a toilet paper coated wood pulp cellulose absorption core. The surface of the sanitary napkin provided by the invention is composed of 100% polylactic acid fiber or PLA/PBHV fiber hot blast nonwoven fabric. The polylactic acid fiber retains the original characteristics and does not cause any damage. As polylactic acid is formed by polymerization of lactic acid molecules as monomers and spinning, polylactic acid molecules with short molecular chains possibly exist on the fiber surface, so that the pH value of a polylactic acid non-woven fabric surface shows weak acidity and is consistent with that of human body skin. Also an odor removal function is provided. The lateral two pieces of non-woven fabrics have greater gram weight and thickness than the intermediate piece, and side leakage cannot be caused.

The invention relates to a high-yield technology for producing baicalin from a raw material, namely, baical skullcap roots, with a biological enzyme fermentation technology. According to the technical scheme, the technology comprises steps as follows: reflux extraction of the baicalin is performed on a raw material with boiling water containing a solubilizing agent firstly, a complex enzyme is added to an extract for hydrolysis, after refined filtration, a filtrate is heated to the temperature ranging from 70 DEG C to 100 DEG C, the baicalin precipitates by the aid of hydrochloric acid, is washed with water for acid removal and then is dried, the prepared baicalin content exceeds 85%, the baicalin conforms to national standard requirements, and indexes such as the solubility, the color and the like of the baicalin reach the high-quality level. With the adoption of the technology, the production process of the baicalin is simplified, the yield is increased, the production efficiency is improved, the cost is low, and the technology is suitable for large-scale production.

The invention relates to a cellulose viscose producing process engineering using tea, which includes: tea stock preparation, cutting, screen selecting, material washing, preliminary treatment, cooking, desanding and concentrating, chloridization, alkali refining, albefaction, acid treatment, desanding and concentrating, manufacturing, impregnation, squeezing, comminution, old, yellowing, grinding, solubilization, filtering, debubbling, filtering, spinning, drafting, cut off, post treatment, drying, and packing, wherein, a demulcent pulping process is used in the manufacturing technique, a protecting agent is added, and an enzyme treatment process is added. The invention utilizes tea as raw material to produce cellulose viscose, which initiates tea application in textile industry; and reserves the intrinsic antimicrobial and antiradiation substance tea polyphenol in tea, and features of environment protection, pure and fresh, coolness, etc., thereby the fiber thereof has natural performance of antimicrobial, bacterium suppressing, sterilizing, antiradiation, etc., and a novel field is created for the development of the cellulose viscose functional products thereof.

The invention belongs to the field of textile. Multifunctional blended spun rayon with polycomponent of fruit rind and precious stone mainly comprises a functional fiber with four necessary components of viscose functional fiber containing fruit rind charcoal active power, viscose functional fiber containing precious stone power, viscose functional fiber containing bamboo charcoal power and bamboo fiber; and any one out of combed cotton, combed flax, combed wool, soy bean fiber, chitin fiber and milk fiber is added; as a result, fiber with five components is mixedly spun to form multifunction health texrile with polycomponent. The health products of the invention have remarkable physical therapy effect and are unique in the world in terms of natural functional fiber health products.

The invention discloses polymer attapulgite plural gel and a preparation method thereof. The polymer attapulgite plural gel is prepared from the following raw materials in parts by weight: 20-25 parts of crylic acid, 8-12 parts of acrylamide, 5-10 parts of sodium alga acid, 4-6 parts of guar gum, 3-5 parts of hydroxy propyl cellulose, 2-4 parts of ammonium persulfate, 3-5 parts of calcium carbonate, 8-10 parts of sodium hydroxide, 10-15 parts of soyabean protein powder, 5-10 parts of konjac glucomannan, 4-6 parts of beta-cyclodextrine, 0.5-1 part of Tween 80, 5-10 parts of modified attapulgite, the proper amount of monopotassium phosphate and the proper amount of water. The polymer attapulgite plural gel plays a synergetic effect by the compositing of a plurality of polymer water-soluble matters and the modified attapulgite, and is significant in thickening effect, strong in adsorbability, good in water-retaining property, good in dispersibility, wide in application range, and applicable to the fields such as foods, pesticides, water treatment, textile printing, and coatings, can effectively keep the stability of a system, also has certain antibacterial activity and mildew resistance, and simultaneously can be widely applied under extreme conditions such as high temperature, meta-acid environments and alkali environments.

The invention relates to a preparation method of a nano-silver coating of chitosan modified fabric. According to the preparation method, the nano-silver coating is formed on the chitosan modified fabric or textile through silver ion adsorption and in-situ reduction by amino groups and hydroxyl groups on the surface of chitosan under the condition that no reducing agent is added, the silver supporting capacity of the fabric reaches 0.1-200 mg Ag/m<2> and 1-50 mg Ag/g, and the sizes of nano-silver particles are 5-20 nm. The nano-silver particles are uniformly distributed in the fabric and has good dispersity and excellent antibacterial performance. The preparation method is simple in process, needs no reducing agent and is environment-friendly, low in cost and suitable for mass production. The prepared fabric provided with the nano-silver coating has broad application prospects in antibacterial textiles.

The present invention relates to one kind of sodium-potassium andrographolide-semisuccinate and its preparations. On the basis of potassium andrographolide-semisuccinate, which is not enough stable and is likely to produce precipitate and negative effect, sodium-potassium andrographolide-semisuccinate is developed and has relatively high stability and less side effect. The sodium-potassium andrographolide-semisuccinate is prepared into injection, powder for injection and other forms.

The invention relates to a degradable magnesium alloy implanting material for bone fixation and a preparing method of the degradable magnesium alloy implanting material. The implanting material is prepared from, by mass percent, 0.5-4% of Mg, 0.5-4% of Ag and the balance Y. The preparing method of the implanting material comprises the steps of ingot casting metallurgy, extruding, rolling and heat treatment. The prepared implanting material meets the requirement of plates, rods and profiles, wherein the plates, the rods and the profiles serve in biological fluid environments. By means of alloy materials, the good comprehensive mechanical performance needed by bone fixing materials is ensured, the beneficial effects of being capable of inhibiting bacteria, resistant to corrosion, free of cytotoxicity, good in biological mechanical property and the like are achieved, and the alloy materials can be degraded under the biological fluid environments. The implanting material can serve as bone nails or marrow nails or bone fraction plates or other various devices to be used under the medical conditions, and the comprehensive performance is good; and especially, the implanting material has both the biomechanical property and the biodegradable performance at the same time, and the typical defect of existing metal materials of a titanium alloy or stainless steel or high polymer materials in application of the department of orthopaedics is overcome.

The invention provides a composite nanofiltration film and a preparation method thereof, the composite nanofiltration film comprises an ultrafiltration base film and a surface active layer, and the surface active layer comprises a reaction product of chitosan quaternary ammonium salt, beta-cyclodextrin and a cross-linking agent. The method for preparing the composite nanofiltration film comprisesthe following steps: (1) treating the ultrafiltration base film by using a surface active layer solution; and (2) forming a surface active layer. The composite nanofiltration film is prepared by adopting a blending or surface modification matched crosslinking or interfacial polymerization method, the conditions are controllable, the operation is simple, the subsequent heat treatment conditions areadjustable, the continuous production can be realized, and the industrial prospect is realized. The composite nanofiltration film provided by the invention has the advantages of good hydrophilicity,high water flux, good pollution resistance, good interception performance on heavy metal ions, environment-friendly material, low cost, no toxicity and certain antibacterial performance.

The invention relates to a nasal cavity cleaning agent applied to health care of the nasal cavity of a human body. The nasal cavity cleaning agent comprises the following components in percentage by weight: 0.9 to 1.2 percent of sea salt, 0.05 to 0.2 percent of buffering agent and the balance of water, wherein the buffering agent is prepared from citric acid and sodium citrate in the weight proportion of 1 to 100. The nasal cavity cleaning agent has the advantages that: the environment in the nasal cavity is maintained because of sodium chloride with the physical concentration and pH value; 2, secretions in the nasal cavity can be diluted and discharged, nose scabs are eliminated, and breath becomes smooth; 3, the nasal cavity is moisturized and bleeding caused by dryness of the nasal cavity is avoided; 4, pathogenic bacteria and harmful substances in the nasal cavity are cleaned and the automatic secreting and cleaning function of the nasal cavity is recovered; 5, nasal mucosa is protected and the ciliated epithelium of the nasal mucosa is promoted to swing; and 6, the nasal cavity cleaning agent does not have any adverse reaction and any side effect on human bodies because no chemical drug is contained in the nasal cavity cleaning agent.

A graphite-enhanced ultrafine synthetic leather fiber is provided. Graphite nylon 6 master batch is prepared via a twin-screw extrusion way; the nylon 6 master material is added to nylon 6 granules via a metering device for sea-island melt spinning; and graphite-enhanced ultrafine fibers can be achieved after decrement and splitting. The graphite-enhanced ultrafine synthetic leather fiber is characterized by high breaking tenacity, static resistance, bacteria resistance, aging resistant and strong flexibility; ultrafine fiber synthetic leather quality and comprehensive performance can be improved when the graphite-enhanced ultrafine synthetic leather fiber is applied to synthetic leather industry; and traditional sea-island fiber spinning equipment can be employed for production.

The invention discloses a tissue culture and rapid propagation method for kadsura coccinea. The method includes the step A of selection and processing of explants, the step B of induction of explants, the step C of browning prevention processing of calluses, the step D of differentiation of calluses, the step E of subculture multiplication culture, the step F of strong seedling culture, the step G of rooting culture and the step H of seedling hardening and transplanting, wherein in the step A, young and tender leaves close to tips of kadsura coccinea stems are taken and disinfected to obtain sterile explants. By means of the method, the browning rate of explants of kadsura coccinea is controlled at 7% or below, the rooting rate reaches 95%, and the seedling formation rate reaches 97% or above.

The invention discloses a method for preparing compound biological activity sterilizing fluid, which comprises the steps: a proper amount of surface active agent is added to low molecular chitosan quaternary ammonium salt or low molecular chitosan solution under a stirring condition to be used as first fluid, povidone iodine is swelled to be used as second fluid, and the first fluid and the second fluid are evenly mixed according to a proper proportion and are regulated to a prescriptive range by a chemical reagent to obtain the compound biological activity sterilizing fluid. The prepared compound biological activity sterilizing fluid uses low molecular chitosan and povidone as double carriers, the chitosan not only can strengthen the bacterium inhibiting and sterilizing effects of the povidone iodine, but also has a certain adsorbing function for iodine released by the povidone iodine, causes the release of the iodine to be doubly controlled to reduce the volatilization of the iodine and increase the release uniformity of the iodine, the chitosan has degradability, the skin mucosa protecting function and the bacterium inhibiting function, therefore, the compound biological activity sterilizing fluid is stable and environmental-friendly and has high efficiency, low toxicity, low irritation and the skin protecting function.