170results about How to "Raw materials are non-toxic" patented technology

The invention discloses a preparation method of a graphene-carbon nanotube-nano tin dioxide three-dimensional composite material, which comprises the following steps: (a) by using deionized water as a solvent, sequentially adding graphene oxide, stannous dichloride and multiwall carbon nanotubes as solutes, and mixing; (b) performing ultrasonic reaction on the mixed solution at 25-40 DEG C under the ultrasonic power of 100-300W for 1-2 hours; and (c) transferring the solution subjected to ultrasonic reaction into a hydrothermal kettle, performing hydrothermal treatment at 120-300 DEG C for 6-72 hours, and slowly cooling to room temperature, thereby obtaining the three-dimensional-structure graphene-carbon nanotube-nano tin dioxide composite material product. The invention also discloses a corresponding product and application thereof. The method disclosed by the invention can be used for preparing the three-dimensional-structure graphene composite material in an economic environment-friendly and convenient-operation mode; and the graphene-carbon nanotube-nano tin dioxide three-dimensional composite material has the characteristics of high specific surface area, porousness, light weight, long cycle life and the like.

The invention relates to a preparation technology for a microspheric embolization agent. The preparation technology is used for preparing elastic microspheres cross-linked and polymerized by functionalized macromolecules with biocompatibility, wherein the grain range of the microspheres is 1-1500mu m. The preparation technology comprises the following steps that: a cross-linkable micromolecule with a crylic acid structure is connected on a polyvinyl alcohol, polyethylene glycol or polyose macromolecule in form of a covalent bond to form a functionalized macromolecule; and reversed phase suspension polymerization is conducted to the functionalized macromolecule and a 2-acrylamide-2-methylpropanesulfonic acid monomer to prepare cross-linked and polymerized microspheric embolization agent. The embolization agent has the advantages that the flexibility and the elasticity are high, the grain is even and is controllable, the dispersity is good, the raw materials are nontoxic and the biocompatibility and the stability are good. The preparation technology is a pure chemical synthesis technology, no virus pollution is caused to the raw materials and the preparation process, the requirements on international embolization agents are satisfied, and the embolization agent can substitute for all kinds of imported or domestic expensive embolization agent products and can be widely used in surgeries in the field of interventional therapy.

The invention relates to a method for synthetizing carbamate. The method comprises the following steps: adding sulfonyl hydrazones, amine and solvents in a high-pressure kettle, adding alkali as an accelerant, introducing carbon dioxide, performing a stirring reaction for 6-72 hours at the temperature of 40-150 DEG C, cooling the high-pressure kettle to the room temperature after the reaction is completed, slowly releasing carbon dioxide which is not reacted to constant pressure, filtering a reaction liquid, decompressing and stewing the solvents to obtain crude products, and obtaining a series of carbamate chemical compounds through refining in a column chromatography. The method for synthetizing carbamate is safe and simple to operate, the prices of raw materials are low, the raw materials are easy to obtain, the adaptability for functional groups is high, the adaptability for substrates is wide, the method is environmental-friendly, industrial production is facilitated, and the method is widely applied to the synthesis of agricultural chemicals, medicines and natural products.

The invention relates to a preparation method for super fine perovskite LaFeO3, LaMnO3 and LaNiO3 with a stearic acid gel burning method. The invention has technical proposal that (1) lanthanum nitrate and ferric nitrate and stearic acid are weighted with mol rate of 1:1:(7 to 10); lanthanum nitrate and ferric nitrate solid are smelted into the meltdown stearic acid; and the temperature is controlled by ranging from 114 DEG C to 125 DEG C for reacting for higher than 5 hours for gelling; and then the gel is arranged inside a muffle furnace having temperature range from 300 DEG C to 500 DEGC for burning so as to obtain LaFeO3 powder; (2) lanthanum nitrate, manganese chloride and stearic acid are weighted with a mol rate of 1:1:(7 to 10); lanthanum nitrate and manganese chloride solid are smelted into the meltdown stearic acid; and the temperature is controlled by ranging from 104 DEG C to 118 DEG C for reacting for higher than 6 hours for gelling; and then the gel is arranged inside a muffle furnace having temperature ranging from 300 DEG C to 500 DEGC for burning, so as to obtain LaMnO3 powder; (3) lanthanum nitrate, nickel nitrate and stearic acid are weighted with a mol rate of 1:1:(7 to 10); lanthanum nitrate and nickel nitrate solid are smelted into the meltdown stearic acid; and the temperature is controlled by ranging from 102 DEG C to 109 DEG C for reacting for higher than 6 hours for gelling; and then the gel is arranged inside a muffle furnace having temperature ranging from 300 DEG C to 500 DEGC; and the burned powder is calcined for one hour in different temperatures higher than 758 DEG C, so as to obtain LaNiO3 with different granularity sizes.

The invention relates to a titanium alloy artificial knee joint magnetorheological polishing device. The device has the characteristics that the device is high in magnetic current liquid utilization ratio, and uniform and consistent in polishing quality, and can polish a complicated curved surface, so that the device can meet the existing clinic requirement completely. A workbench is arranged at the lower part of a rack; a corresponding six-freedom-degree parallel machine tool is arranged above the workbench; a closed circulating magnetic current liquid loop is connected with a magnetic current liquid channel; the magnetic current liquid channel is placed on a support of the workbench; mounting holes of a titanium alloy prosthesis are formed below the magnetic current liquid channel; a sealing washer is mounted between the magnetic current liquid channel and the titanium alloy prosthesis; the titanium alloy prosthesis is fixed in a pressure rod; the six-freedom-degree parallel machine tool is connected with an electromagnet; the magnitude of the magnetic field intensity of a magnetic current liquid is controlled by adjusting a gap between the end face of the electromagnet and the surface of the magnetic current liquid channel, so that the magnitude of a cutting force of abrasive particles in the magnetic current liquid on the surface of a titanium alloy is controlled; and the six-freedom-degree parallel machine tool, the electromagnet and the magnetic current liquid loop are connected with a control device.

The invention provides a method for synthesizing magnesium metasilicate swinefordite by directly using salt lake saline water, which comprises: adding the soluble metasilicate into the salt lake condensed saline water, adjusting the mixing solution to make it not less than 11 with queous alkali, and adjusting the stoichiometric ratio of the magnesium, lithium and metasilicate in the mixing solution by using primary magnesium product and lithium product, then putting the mixing solution in the pressure reacting pan to react under high pressuer and high water temperature, rotary scrubbing or sucting after cooling, drying and getting the magnesium metasilicate lithium powder. The invention employs the abundant lithium, magnesium resource in the salt lake to synthesize magnesium metasilicate lithium, without the separation of magnesium and lithium, which passes the technological problem of separating magnesium and lithium, and the invention is characterized by simple process, short producing period, low cost, high product added value and suitable for industrialization; the raw material is nontoxic and harmless, there is no pollution during the whole process and no side product; the invention provides a new idea and way for comprehensive development and use of the salt lake resource.

This invention relates to a material for decorating surface of the positive of Li ionic battery and its preparation method, first of all, putting a positive powder material Li-M1M2-O(M1M2=Co Mn Ni Cr into a solution with organic substance in the concentration of 0.05-2.00mol/1 then to put the mixed substance into a heat water reactor with mixing for 0.1-4h under 150-200deg. to spray and dry the reacted solution, then a positive material is got covered uniform carbon microspheres having the advantage of high specific capacity, fine circulation performance, uniform porosity and no impurities.

The invention discloses a mosquito repellent liquid. The mosquito repellent liquid comprises, by weight, 10 to 20 parts of bruceine, 5 to 10 parts of lightyellow sophora root, 2 to 5 parts of wild chrysanthemum, 3 to 7 parts of sesame, 4 to 9 parts of pilose asiabell root, 2 to 5 parts of poria cocos, 2 to 6 parts of cassia seed, 3 to 8 parts of smoked plum, 10 to 13 parts of areca seed, 4 to 12 parts of argy wormwood leaf, 5 to 8 parts of Chinese angelica, 1 to 5 parts of clove, 1 to 5 parts of ageratum, 2 to 7 parts of arnebia root, 10 to 20 parts of fleece-flower root, 10 to 20 parts of black sesame, 10 to 20 parts of milkvetch root, 10 to 20 parts of red sage root, 10 to 20 parts of pricklyash peel, 5 to 10 parts of tuber of stemona, 5 to 10 parts of peppermint oil, 5 to 10 parts of tea seed cake, 5 to 10 parts of lime, 5 to 10 parts of oxhide gelatin, 5 to 10 parts of black ant, 5 to 10 parts of ganoderma lucidum, 5 to 10 parts of musk, 5 to 10 parts of crocus sativus, 5 to 10 parts of sichuan lovage rhizome, 5 to 10 parts of fig leaf and 10 to 20 parts of licorice root. The mosquito repellent liquid is a pure traditional Chinese medicine external preparation, does not contain a hormone, and has a unique formula and innovativeness. The mosquito repellent liquid is prepared from the nontoxic raw materials, and has a low price, a low cost, a wide market prospect, and good economic and social benefits.

The invention relates to polyurethane elastic fibers with multielement functionality and a preparation method thereof. The preparation method comprises the steps of preparing a synthesized glycyrrhetic acid chitosan quaternary ammonium salt into nanoparticles; uniformly dispersing the nanoparticles into a polyurethane stock solution by adopting a slurry technology and mechanical stirring; then performing dry spinning on a spinning stock solution to obtain the polyurethane elastic fibers with multielement functionality. The polyurethane elastic fibers has the beneficial effects as follows: 1, the prepared nanoparticles are added into the polyurethane stock solution, so that the problem of poor compatibility between the glycyrrhetic acid chitosan quaternary ammonium salt and the stock solution and the negative effect on the fiber performance, caused by the problem, are solved, and the breaking strength of the fibers can be improved; 2, the nanoparticles have amphipathy, and a charge passage can be established in a fiber interface to ensure that the fibers have an effect of inhibiting generation of static electricity; 3, due to the introduction of glycyrrhetic acid, the obtained polyurethane fibers have an obvious effect of eliminating oxygen free radicals; 4, due to the introduction of quaternary ammonium groups, the antibacterial properties of the fibers are improved.

The invention provides a pure traditional Chinese medicine compound preparation for external use (such as ointment, film agent, gel and tincture), which is used for treating pruritus caused by eczema-dermatitis and mosquito biting and does not contain hormonal. The compound is prepared from resveratrol, glycyrrhizic acid or physiologically acceptable salts of glycyrrhizic acid or glycyrrhetinic acid or physiologically acceptable salts of glycyrrhetinic acid, ginghaosu and derivates thereof, menthol or borneol composition. Proved by experiments and clinical tests, the compound resveratrol anti-inflammatory and itching relieving medicament combination has the functions of resisting inflammation, restraining bacteria and relieving itching aiming at the characteristics of pruritus caused by eczema-dermatitis and mosquito biting and has specific curative effect for pruritus caused by eczema-dermatitis and mosquito biting. The invention has the advantages of nontoxic raw materials, low price and cost, wide market prospect and considerable expectant economic benefit and social benefit.

The invention relates to a preparation method of two-dimensional ultrathin tin sulfide nanosheets and a material prepared from the same. Sn2Cl4(Tu)5.2H2O is used as a precursor and subjected to thermal decomposition at 230 DEG C by a novel solid-liquid reaction route to synthesize the graphene-like ultrathin SnS2 nanosheets in a controllable way. The reaction temperature is controlled to obtain the pure hexagonal-phase SnS2 nanosheets, mixed-phase SnS2-SnS and pure orthorhombic-phase SnS nanosheets. The obtained hexagonal-phase SnS2 nanosheets have high mass specific capacitance (the specific capacitance is 614.6F g<-1> when the current density is 1A g<-1> and excellent stability), and are much better and the mixed-phase SnS2-SnS and pure orthorhombic-phase SnS nanosheets. The hexagonal-phase SnS2 nanosheets can be used as an active material for constructing high-performance supercapacitors.

The invention discloses dendrobium officinale flower beauty-nourishing tea which comprises the following raw materials in percent by weight: 20-40 percent of dendrobium officinale flower, 10-24 percent of chamomile, 8-14 percent of apple blossom, 6-10 percent of lemon and 30-50 percent of green tea. The dendrobium officinale flower beauty-nourishing tea is prepared by the following steps: selecting dried or fresh products, mixing the treated raw materials, directly packaging in separate bags or grinding and packaging in separate bags, sterilizing and boxing. The inherent effects of detoxifying, beautifying and nourishing skin of the raw materials are fully exerted, the effect is outstanding, the raw materials are non-toxic, safe, convenient to carry and obvious in curative effect and do not have side effects, and selection of vast women in the love of beauty and attention on daily health care can be met.

The invention relates to a synthetic method for an ethylene sulfite derivative, and belongs to the field of fine chemical synthesis. The synthetic method comprises the following steps: with titanate as a catalyst, carrying out ester exchange on dimethyl sulfite and corresponding glycol to synthesize the target compound, wherein the using amount of the catalyst is 0.01% to 2% of total weight of reactants, and the mole ratio of the used glycol to the used dimethyl sulfite is 1 to 1.2; reacting at the temperature of 80 to 150 DEG C, gradually carrying out fractionation to remove generated methylalcohol, and stopping the reaction when the methyl alcohol is not fractionated any longer; and carrying out vacuum distillation on the reaction product, and collecting the target substance. The methodhas the advantages of no corrosion, high raw material conversion rate, high yield and the like.

The invention discloses a mosquito-repellent composition and a mosquito-repellent liquid preparation method and belongs to the technical field of daily chemicals. The mosquito-repellent composition comprises the following components in parts by weight: 0.01-0.1 part of vitamin B1, 2-11 parts of mozzie buster, 1-7 parts of wormwood, 2-7 parts of night willow herb, 1-3 parts of lavender, 1-7 parts of root of lindley butterflybush, 2-5 parts of plectranthus hadiensis var. tomentosus, 1-5 parts of flores aurantii, 3-14 parts of geranium and 2-7 parts of marigold. The invention also provides the mosquito-repellent liquid preparation method which comprises the following steps: cleaning up and then drying all the plants; crushing the plants; performing extraction and concentration; mixing with vitamin B1; finally, adding ethanol, distilled water and auxiliary materials; and after that, sterilizing and packaging to obtain a mosquito-repellent liquid. The mosquito-repellent composition and the prepared mosquito-repellent liquid are safe and nontoxic, has a remarkable mosquito-repellent effect, and also has obvious economic benefits and environmental benefits.

The invention discloses a catalyzing and synthesizing method of ethyl propyl carbonate and methyl amyl carbonate, which is characterized by the following: selecting alkaline metal or alkaline metal salt or hydroxide as catalyst as well as zeolite molecular sieve or active charcoal immersed by alkaline metal or alkaline metal salt or hydroxide; adopting DEC and normal propyl alcohol as raw material; improving the transmitting rate of DMC to 100% and selectivity of ethyl propyl ester carbonate to 96.1%.

The invention discloses a preparation method for fluorescent wavelength adjustable nitrogen and sulphur-co-doped carbon quantum dots, and belongs to the technical field of carbon quantum dots. The preparation method comprises the following steps: grinding and uniformly mixing L-glutamic acid and methionine in an agateware in a certain proportion; tilling the mixture at the bottom of a beaker, thenheating to 200 to 300 DEG C at a constant speed, and heating and reacting for 5 to 20 minutes in the temperature range to obtain a reaction product A; cooling the reaction product A to a room temperature; adding a passivating agent into the reaction product A, and uniformly mixing to obtain a mixed solution B; heating to enable the mixed solution B to react for 2 to 10 minutes at 200 to 300 DEG Cto obtain a mixed solution C; cooling the mixed solution C to a room temperature; performing centrifugal treatment; and standing, and dialysing through a dialysis bag to remove unreacted raw materials and impurities to obtain the nitrogen and sulphur-co-doped carbon quantum dots. The preparation process disclosed by the invention is simple and controllable; the fluorescent wavelength of the carbon quantum dots can be regulated and controlled by changing preparation conditions or the passivating agent so as to cover the wavebands of green light, yellow light and red light to meet actual application requirements.

The invention discloses a photoelectric chemical battery electrode and a preparation method and application thereof. The photoelectric chemical battery electrode comprises a conductive substrate and a semiconductor thin film, and is characterized in that the semiconductor thin film is a nano-cuprous oxide thin film which contains metal copper micro particles. The electrode is prepared by directly growing the cuprous oxide thin film with the metal copper micro particles on the conductive substrate by an electrochemical deposition method. The conductive metal Cu micro particles are introduced into the Cu2O thin film, so that the conductivity of the electrode is improved; the transmission rate of electrons to the conductive substrate is increased; composition of current carriers is reduced; a short circuit current is increased; and the energy conversion efficiency of a battery is improved. Compared with the prior art, the photoelectric chemical battery electrode has the advantages that the performance of a photoelectric chemical battery assembled by the electrode is greatly improved, and the photoelectric conversion efficiency can be up to 3.13 percent at most.

The invention discloses a process for preparing an ultra-low-temperature glaze and a formula and belongs to the field of the development and application of glazes. The annealing temperature of the glaze is reduced by regulating the formula of the glaze. The process is characterized by preparing a novel low-temperature glaze by taking borax, weathered potassium-feldspar, calcium oxide and zinc oxide as raw materials. The glaze comprises the following components in percentage by mass: borax (0.3 to 0.9), weathered potassium-feldspar (0.05 to 0.35), calcium oxide (0.03 to 0.18) and zinc oxide (0.03 to 0.18). The sintering temperature can be adjusted between 700 and 1,050 DEG C by changing the content of the borax and keeping the content proportion of other components invariable. The preparation process comprises the following steps of: pre-treating a blank at first and then applying the glaze on the blank body to form a coating with the thickness of 0.3 to 0.8mm. The process and the formula have the advantages of no toxic or side effect of raw materials, low cost of raw materials, simple and practical preparation method, low sintering temperature, short temperature preservation time, great energy source conservation, high surface glossiness of the glaze and good decoration effect.

The invention discloses a mullite-based coating material for a rocket launching pad. The mullite-based coating material is prepared from mullite, cordierite, high-alumina cement and silica powder. The high-temperature combustion gas stream resistant mullite-based coating material for the rocket launching pad can protect a rocket launching pad metal structure against scouring and high-temperature ablation of high-temperature combustion gas streams, ensure reliability of working of the launching pad and prolong the service life of the launching pad. The mullite-based coating material for the rocket launching pad is applicable to high-humidity, high-salt-mist and high-ultraviolet-irradiation environments, is good in anti-corrosion performance and meets requirements for protecting the base body protection material of the rocket launching pad when the rocket launching pad is developed in coastal regions where transportation and launching are more convenient. The mullite-based coating material construction is easy and convenient. Raw materials for the mullite-based coating material are free of poison and corrosion, have the advantages of saving energy and being environmentally friendly and play an important role in improvement and protection of the environment.

The invention discloses an absorbable dura mater and a preparation method thereof. The absorbable dura mater comprises a hydrophilic layer and a hydrophobic layer, wherein a three-dimensional structure formed by crosslinking and curing acrylic acid esterification gelatin and acrylate-polyethylene glycol-N-hydroxysuccinimide ester is used as the hydrophilic layer, and a compact film formed by absorbable polyester is used as the hydrophobic layer. The absorbable dura mater can achieve tissue regeneration of a dura mater defect part, can be quickly sealed with a defect edge, has high strength, can be effectively utilize the compact hydrophobic layer to prevent cerebrospinal fluid from leaking, and can effectively utilize the hydrophilic layer to accelerate regeneration of the dura mater defect area.