1077results about How to "Has a bactericidal effect" patented technology

The invention discloses a modified silica sol and application thereof in preparation of aqueous painting. The inventive modified silica sol is prepared from aqueous silica sol by regulate pH value of raw material to 3-6; charging organosilane with a mass ratio with SiO2 in silica sol of 1:1 - 5:1, water bathing at temperature of 50-80 DEG C., waiting for 0.5-5 hours, vaporizing by-products generated in hydrolysis to obtain transparent sol, which is final product. The modified silica sol has cheap raw material, simple preparation. When used as matrix in preparation of paint, the sol uses only water as solvent, without need of adding any organism such as alcohol. The preparation is simple, economic, environmental protecting. The prepared aqueous paint not only has high decorative, great adhesion and toughness of organic paint, but also has high rigidity, chemical resistance of inorganic paint, which can be used on surface of substrates of metal, glass, wood, plastic and in construction industry.

The invention discloses environment-friendly diatom ooze wall material powder and a wall material as well as a preparation method and application thereof. The diatom ooze wall material with macromolecule sieve structure is prepared by taking a plurality of natural environment-friendly non-metal material having strong adsorbability and good plasticity as main materials through a simple process. The environment-friendly diatom ooze wall material powder has the advantages of low cost, air purification, moisture absorption, deodorization, inflaming retarding, heat insulation, easy popularization,and the like.

The invention discloses a nano-fiber and process for preparation, the components of the nano-fiber are silk fibroin, Argentine simple substance particles and polyvinyl alcohol, the process for preparation is that: a, after natural silk is unglued, dissolved, purified and dried, regenerated silk fibroin is obtained; b, the regenerated silk fibroin is dissolved in acidizing fluid, and regenerated silk acid solution is obtained; c, after polyvinyl alcohol is dissolved, polyvinyl alcohol solution is obtained; d, the two solutions are mixed. e, Ag-type inorganic salt is added; f, silver electrode is used to do electrostatic spinning, and blend nano fiber felt is obtained; g, the blend nano fiber felt is thermally treated for 2-5 minutes at the temperature condition of 100-150 DEG C and is treated by the radiation of ultraviolet light for 3-5 hours, and blend antibacterial nano fiber of the silk fibroin and the polyvinyl alcohol is obtained. The mechanical property of the fiber is better than pure silk fibroin fiber, the biocompatibility is excellent, the fiber has an antibacterial property, the fiber is suitable for bio-medical materials, in particular to tissue engineering scaffold materials.

The invention discloses a polyvinylidene fluoride hollow fiber film and a preparation method thereof. The polyvinylidene fluoride hollow fiber film comprises the following components by weight percent: 20-60% of polyvinylidene fluoride resin, 10-50% of organic pore-forming agent, 1-30% of inorganic pore-forming agent and 5-30% of solvent. The preparation method comprises the following steps: mixing, squeezing, cooling, stretching, extracting the organic pore-forming agent and the inorganic pore-forming agent, and thermally shaping. The obtained polyvinylidene fluoride hollow fiber film has the advantages of high strength, good performance, better hydrophilicity, simple preparation process and energy saving.

The invention relates to the field of cultivation of crops, and in particular relates to a mushroom cultivation method by taking pecan rush shells as a main culture medium raw material, wherein the mushroom cultivation method disclosed by the invention comprises the steps of manufacturing a culture medium by taking the pecan rush shells as the raw material, inoculating, carrying out fungus sprouting management, and carrying out mushroom rising management and the like. The mixture ratio of culture medium raw materials is rationally controlled; influence of wastes in a pecan industry on the environment is relieved; furthermore, the mushroom cultivation cost is reduced; simultaneously, the mushroom cultivation quality is increased; and green pollution-free mushroom cultivation is realized.

The invention discloses a pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of the pharmaceutical compound. The pharmaceutical compound comprises one of 8-hydroxyquinoline and derivatives of 8-hydroxyquinoline or a composition of any two of 8-hydroxyquinoline and the derivatives of 8-hydroxyquinoline, one of polyamine-dithiocarbamates or a composition of any two of the polyamine-dithiocarbamates, and one of dihydrocarbyl dithiophosphates or a composition of any two of the dihydrocarbyl dithiophosphates, wherein the mass fractions of the three components are respectively 1% to 90%, 1% to 90% and 1% to 98%. The pharmaceutical compound is dissolved in water and then the pharmaceutical compound solution is added into wastewater to be treated, and the amount of the pharmaceutical compound is 0.5 to 2 times larger than the theoretical amount of heavy metals and radioactive substances in the wastewater; and a metal complex is formed after sufficient stirring, and finally, the wastewater treatment can be completed by filtering separation. The pharmaceutical compound and the application of the pharmaceutical compound provided by the invention have the advantages of obvious effects, less investment, low cost, no site restriction, remote automatic control and the like.

The invention discloses sterilization soil-improvement slow-release composite fertilizer. The sterilization soil-improvement slow-release composite fertilizer comprises, by weight, 20-25 parts of urea, 10-15 parts of ammonium biphosphate, 10-20 parts of potassium phosphate, 5-10 parts of potassium sulfate, 8-12 parts of sodium silicate, 4-6 parts of magnesium phosphate, 7-9 parts of calcium chloride, 0.2-0.4 parts of zinc ammonium phosphate, 0.1-0.3 parts of copper carbonate, 0.1-0.2 parts of manganese ammonium phosphate, 0.4-0.6 parts of potassium borate, 0.3-0.5 parts of ferric sulfate, 0.2-0.4 parts of sodium molybdate, 20-25 parts of sodium alginate, 35-45 parts of a coating material, 5-10 parts of cassava slag, 5-8 parts of furfural slag, 10-20 parts of chicken manure, 5-10 parts of carbonized rice husk, 10-15 parts of humic acid, 10-15 parts of straws, 5-8 parts of plant ash, 0.2-0.5 parts of biological fungi, 4-6 parts of thermopsine and 3-5 parts of Artemisia argyi powder. The invention also discloses a preparation method of the sterilization soil-improvement slow-release composite fertilizer.

An auxiliary material and a method for preparing sliced dried beef by the aid of the auxiliary material relate to the technical field of meat processing. The auxiliary material comprises galangal, myrcia, anise, black pepper, wild pepper, spicy pepper, cinnamon, fennel, glycyrrhiza, myristica fragrans, amomum tsao-ko, lemongrass and chilli. The method for preparing sliced dried beef by the aid of the auxiliary material includes raw material selecting and neatening; a curing procedure; an air drying procedure; a neatening procedure; a cooking procedure; a baking procedure; a primary packaging procedure; a sterilizing procedure; and a secondary packaging procedure. A traditional production process including salting and natural air drying is combined with an industrial production process including microwave drying and sterilizing and high-temperature and high-pressure sterilization in the method for preparing the sliced dried beef, advantages of the traditional production process and the industrial production process are complemented, so that moistures of different layers of the sliced dried beef are distributed uniformly, production energy consumption is reduced effectively, color, fragrance, taste and nutritional substances of the sliced dried beef are kept well, a sterilizing effect is realized, storage and quality guarantee of the sliced dried beef are facilitated, a non-fried baking process is adopted, the original nutritional substances of beef are kept effectively, protein loss is reduced, coking is stopped, carbohydrate is avoided, and needs of different people groups are met to the greatest extent.

The invention discloses a method for degrading chlorpyrifos, which is to degrade a chlorpyrifos-contaminated sample by the irradiation of gamma rays. Co is used as a radioactive substance and the irradiation dose is 0 to 12 kGy and more than 0, preferably 4 to 10 kGy, more preferably 6 to 8 kGy, and optimally 8 kGy. The chlorpyrifos-contaminated sample is chlorpyrifos-contaminated crops, flowers and plants or livestock such as asparagus. The method for degrading chlorpyrifos can be carried out at temperature and normal pressure, is simple in process, free from secondary pollution and high in efficiency, and has a sterilization effect. When the irradiation dose is 8 kGy, the method can degrade nearly 30.0 percent of the residual chlorpyrifos in the asparagus and up to 99 percent of chlorpyrifos in aqueous solutions.

The invention discloses a copper-bearing antibacterial titanium alloy and a preparation method thereof, and relates to an antibacterial titanium alloy and a preparation method thereof. In the invention, the problems of easy recession or loss and poor long-term effectiveness of a surface antibacterial layer of the current antibacterial titanium or titanium alloy can be solved. The copper-bearing antibacterial titanium alloy disclosed by the invention is prepared by adding 1-3% by weight of copper to pure titanium or titanium alloy. The method comprises the following steps of: weighing pure copper powder and titanium material powder; under the protection of gas or liquid, adding the pure copper powder and the titanium material powder to a ball mill to be milled to obtain powder; adding the powder to a mould; hot pressing and sintering in vacuum to obtain the copper-bearing antibacterial titanium alloy. The copper-bearing antibacterial titanium alloy disclosed by the invention is an integral antibacterial titanium alloy, has long-term effectiveness and can be used in the medical field or the field of articles for daily life.

The invention relates to a plant-source bacteriostatic composite thin film and a preparation method thereof. The composite thin film comprises the following components in parts by weight: 70-80 of base material, 3-10 parts of plasticizer, 0.5-5 parts of antioxidant, 5-15 parts of composite antibacterial particles, 1-5 parts of coupling agent, 1-5 parts of dispersant, 5-10 parts of preservative and the like. The composite thin film disclosed by the invention can resist bacteria and has a good effect, and is widely applied to the fields of industry, agriculture, food, drugs and daily necessities.

The invention discloses a production method for ready-to-eat instant nutritive edible fungus soup, which belongs to the technical field of deep processing of agricultural products. The production method mainly comprises the steps of selecting, cleaning, precise cutting, mixed boiling, spreading, pre-freezing and microwave vacuum freeze drying on screened raw materials such as edible fungi, thus obtaining the product which is subjected to nitrogen-filled packaging after being taken out of storage. The raw materials of the edible fungus soup is dewatered by a microwave vacuum freeze drying technology according to a modern food nutrition principle, so that the original color, aroma, taste and nutrients of the product are kept to the hilt, and compared with those of a conventional process, the drying efficiency is remarkably improved, the production cycle is shortened, the production cost is effectively reduced, and the special sterilizing effect of microwaves further guarantees the product quality at the same time. The edible fungus soup produced by the method is flat in shape, bright in color and luster, rich in nutrition, good in water regaining effect and long in storage time, and a feasible new way is provided for deep processing and utilization of the edible fungi.

The invention relates to the technical field of medical apparatus and instruments, which discloses a sustained release type antibacterial medical catheter and a preparation method thereof. A silver inorganic antimicrobial is characterized by high content of silver, safety and the like, and the silver inorganic antimicrobial which adopts zirconium phosphate as a carrier is selected and mixed into catheter material to prepare the sustained release type antibacterial medical catheter that is most widely applied to clinic, such as an antibacterial catheter, an antibacterial central venous catheter, an antibacterial trachea cannula and the like. The catheter has high use safety, wide antibacterial spectrum, good antibacterial effects, antimicrobial constituent sustained release and long duration of antibacterial effects, and can reduce the frequency of replacing medical catheters so as to have safe and convenient clinical use, effectively reduce nosocomial infections related to catheters due to the use of the medical catheters, greatly reduce medical expenses related to anti-infection, and the like, and save medical resources.

The invention relates to a silver-loaded antibacterial artificial joint and a preparation method thereof. The silver-loaded antibacterial artificial joint consists of a pure titanium or titanium alloy artificial joint substrate and a micropore sodium titanate bioactivity layer loaded with microelement silver and bone morphogenetic protein (BMP). The sodium titanate bioactivity layer with a micropore structure is combined with the metal substrate surface and is formed by mutually alternately stacking the sodium titanate micropore sodium structures generated by the hydro-thermal reaction between the titanium or titanium alloy substrate surface and sodium hydroxide solution. The silver element and sodium carry out cation exchange to dope into a coating. The BMP is compounded in the micropore structures under the action of the centrifugal force and the capillary. The preparation method comprises the following steps: firstly selecting pure titanium or titanium alloy to process the artificial joint; then adopting the alkaline hydrothermal synthesis technology obtain a sodium titanate layer with the micropore structures on the surface of the titanium artificial joint; doping trace silver in the micropore sodium titanate layer by solution impregnation iron exchange; and finally adopting the centrifugal load technology to load the bone morphogenetic protein in the silver-doped micropore sodium titanate layer.

The invention discloses fruit and vegetable washing salt. The fruit and vegetable washing salt is prepared from the following raw materials in percentage by weight: 68-72% of table salt, 26-28% of a surfactant, and 2-4.0% of a stabilizer. According to the preparation method disclosed by the invention, the table salt is used as the main raw material, and compounded with the surfactant and other ingredients to prepare safe, non-toxic and efficient environment-friendly fruit and vegetable washing salt with washing performance and a high value added at a certain temperature. The washing salt product is stable, non-toxic, appropriate in the pH value, moderate, not harmful to hands, and capable of meeting contract requirements for sense organs and other physicochemical indexes.

The invention discloses an indoor air disinfectant and a preparation method thereof, and relates to the technical field of disinfectants, and the indoor air disinfectant comprises the following raw materials: 45-55 parts of Chinese herbal medicine extract, 35-36 parts of a fungicide, 32-33 parts of plant essential oil, 20-25 parts of an activation particle, 17-19 parts of an assistant and 75-80 parts of deionized water. The indoor air disinfectant is non-toxic and nonirritant, fresh in smell, good in disinfection effect and long lasting in effect.

The invention relates to a method for quickly thawing frozen pork, in which radio frequency equipment with the frequency of 27.12 MHz is employed to quickly thaw bulk frozen pork. The process is as follows: placing the bulk frozen pork in a space between two metal polar plates of the radio frequency equipment, setting a spacing between the polar plates, starting a radio frequency power supply to perform thawing, and stopping thawing when the temperature at the center of the bulk pork reaches -5-0 DEG C. With the adoption of the method, thawing can be quickly achieved, it only takes few tens of minutes to thaw thick bulk frozen pork, and furthermore, temperature distribution in the pork is uniform after thawing, and little thawing liquid is lost with few contaminant colonies.

The present invention provides a kind of root canal filling paste with calcium phosphate bone cement as main material and capable of being stored at certain conditions without change in property and capable of being injected. The root canal filling paste consists of solid powder and curing liquid, the solid powder includes calcium phosphate powder and developing agent, and the curing liquid contains humectant, thickener, coagulant and water. The root canal filling paste compounded with the solid powder and the curing liquid is stored in an injector, and when it is used, the injector with root canal filling paste is set in the air for minutes for the paste to raise its temperature before being injected to root canal. The injected paste will solidify fast to convert into high strength hydroxyapatite. The present invention has less operation steps, shortened surgical operation period and raised root canal treating quality.

The invention discloses a sustained-release mixed fertilizer. The sustained-release mixed fertilizer comprises the following raw materials in parts by weight: 30 to 40 parts of urea, 15 to 25 parts of monopotassium phosphate, 10 to 20 parts of potassium silicate, 3 to 5 parts of magnesium sulfate, 8 to 10 parts of calcium chloride, 0.2 to 0.4 part of zinc sulfate, 0.3 to 0.5 part of copper nitrate, 0.5 to 1.5 parts of sodium borate, 0.1 to 0.3 part of ferric chloride, 0.1 to 0.3 part of manganese sulfate, 0.3 to 0.5 part of ammonium molybdate, 22 to 29 parts of sodium alginate, 40 to 50 parts of coating material, 5 to 10 parts of biochar, 10 to 15 parts of soybean meal, 10 to 15 parts of humic acid, 10 to 15 parts of straw, 8 to 12 parts of plant ash, and 5 to 7 parts of Gaotouwu powder. The invention also discloses a preparation method of the sustained-release mixed fertilizer. The sustained-release mixed fertilizer can control various elements to be released slowly, can improve the soil and can be used for sterilization and weed control, the coating material can be biologically degraded, and the environment can be protected.

A preparation method of core-shell composite material wrapped in a titanium dioxide nanoparticle coating includes: firstly, acquiring nanoparticle carrier; and secondly, wrapping the surface of the metal or metal oxide nanoparticle carrier with a titanium dioxide nanoparticle coating. The second step includes dissolving titanium isobutoxide in glycol, mixing at room temperature for 4-8 hours to obtain titanium dioxide precursor mixed solution A, dispersing the nanoparticle carrier in acetone, mixing well to obtain even mixed solution B, adding the titanium dioxide precursor mixed solution A into the mixed solution B, allowing for obtained solution to stand at room temperature to form precipitate mixed solution, and subjecting the precipitate mixed solution to centrifugal separation, and heating in water bath at 80-100 DEG C. The preparation method of the core-shell composite material wrapped in the titanium dioxide nanoparticle coating allows for increasing of photocatalysis efficiency and is low in cost.

The invention discloses powder evanescent mode casting paint and an application method thereof. The powder paint comprises the following components in percentage by weight: 88.9-89.7% of refractory aggregate, 3.7-4.5% of sodium base bentonite, 0.78-1.23% of polyethyl alcohol, 0.82-1.85% of aluminum dihydrogen phosphate, 0.32-0.44% of sodium carboxymethylcellulose, and 3.8-4.8% of expanded graphite. During preparing, all powder is added in a mixer for dry mixing to reach an uniform state to obtain the finished powder evanescent mode casting paint. Water by 23.5-37 weight% of the powder paint is firstly added in the mixer; the mixer is started; the powder paint is slowly added in the mixer; after materials are added, the stirring is continued by 1-2 hours; and then, an evanescent mode can be coated by the paint. The paint can achieve the effect of long-time storage without deteriorating by adding no formaldehyde in the raw materials; no surface active agent is added in the raw materials to prevent the trouble of adding a defoaming agent to defoam in subsequent use; the finished product is higher in strength at normal temperature or high temperature; and the paint is excellent in permeability, and cannot release poisonous substances.

The invention provides air purification heath protection mud and a production process thereof. The health protection mud consists of a component I and a component II, wherein the component I comprises diatomite, zeolite powder, maifanitum powder, nano zinc oxide, negative ion powder, dispersible latex powder, methyl cellulose and an inorganic pigment; and the component II comprises water, an anti-freezing agent, a dispersing agent, an antifoaming agent, an emulsifying agent, a stabilizing agent, a macromolecule packaging agent, and cypress oil, clove oil or eucalyptus oil. The health protection mud has the effect of eliminating harmful substances such as formaldehyde, benzene and the like and improving indoor geomagnetic intensity, can produce negative ions, has the functions of deodorization, smell elimination, inflaming retardant, sound insulation and noise reduction, and can adjust indoor air humidity.