615results about How to "Save raw materials" patented technology

An expansion-type flame-retarding material is prepared through reaction between polyol and phosphorus compound containing hydroxy, adding melamine, reaction and modifying surface by high-molecular substance. Its advantages are high compatibility to polyethene and polypropyene, less consumption, high mechanical performance and flame-retarding effect, no poison and corrosion, and environment friendly.

The present invention provides a high silica-alumina ratio small grain size NaY molecular sieve and its preparation method. It is made up by adopting non-template agent direct synthesis process, and its preparation method includes the following steps: firstly, stirring and ageing for 0.5-48 hr at 15-60deg.C to obtain crystallization guide agent, then making said guide agent, water silicon source and aluminum silicon into reaction mixture, then crystallizing said mixture at twice, first step is dynamic crystallization, temperature is controlled at 20-80deg.C and crystallization time is 0.5-24 hr, second step is static crystallization, temperature is controlled at 90-140deg.C and the crystallization time is 5-100 hr, finally, filtering, washing and drying so as to obtain the invented product whose relative crystallinity is greater than 80%.

The invention relates to a making method and an application of a mycotoxin photoelectrochemical sensor for in situ generation of CdS. The method uses cerium dioxide doped reduced graphene oxide as an antibody capture substrate, and the cerium dioxide doped reduced graphene oxide has good conductivity and large specific surface area, and can effectively reduce background signals. Na2S is directly dropped to the surface of an electrode with Cd<2+> functionalized porous TiO2 nanoparticles as a semiantigen marker carrier in order to realize in situ generation of narrow band gap CdS with a high photoelectric conversion rate, and a photoelectric current signal can be generated through irridating the CdS by an LED lamp of visible light wavelength. The carrier TiO2 can be well matched with the energy band of the CdS in order to further improve the photoelectric conversion signal of the CdS, so the competitive photoelectrochemical sensor for super sensitive detection of zearalenone, alpha-zeranol, aflatoxin B1, aflatoxin B2, ochratoxin A, ochratoxin B and other mycotoxins is made.

The invention discloses Bacillus amyloliquefaciens and an application thereof. The Bacillus amyloliquefaciens is Bacillus amyloliquefaciens YB-3, and the preservation number of the Bacillus amyloliquefaciens YB-3 in China General Microbiological Culture Collection Center (CGMCC) is CGMCC No.4318. The Bacillus amyloliquefaciens YB-3 which can generate antibiotic substances which only exist in cells and are not diffused to a fermentation liquid and has the advantages of broad spectrum antibiotic range, and efficient and stable antibiotic effect can be developed into a microbe biocontrol preparation with various functions in the future.

The invention relates to the field of precision casting methods, in particular to an integral precision casting method for a large thin-wall casing part. The production cost is saved, the production period is shortened, and the thrust-weight ratio of the casing part is greatly improved. The technical scheme comprises the following steps of: designing a computer model of a wax mould, and preparingthe wax mould according to the computer model, wherein the process parameters are that: the wax material temperature is 68DEG C, the injection pressure is 2-3MPa, and the hold up time is 180-200 seconds; coating 15 layers of coatings on the surface of the prepared wax mould, spreading sand on the surface after each layer is coated, naturally drying and finally performing air drying, wherein afterthe wax mould is coated with the seventh layer of coating, the coating layer is subjected to one-time hole plugging and net suspension; after the coating is finished, dewaxing and sintering to obtaina casing part shell; casting at the temperature of between 1,550 and 1,570DEG C for 22 to 27 seconds to obtain a casing casting; and performing hot shape correction on the casing casting.

The invention provides a preparation method for lignosulfonate, which comprises the following steps: (a) mixing a sulfate process pulping waste liquid and a sulphite process pulping waste liquid so as to obtain a mixed waste liquid, wherein the pH value of the mixed waste liquid is 12 to 13, the sulfate process pulping waste liquid comprises lignin and sodium hydroxide and the sulphite process pulping waste liquid comprises calcium lignosulphonate and reducing sugar; (b) heating up the mixed waste liquid and keeping the mixed liquid warm so as to obtain a first solution; and (c) adjusting the pH value of the first solution to be in the range of 10.5 to 11.5 and adding aldehydes compounds to the first solution so as to obtain calcium lignosulphonate after reaction. In the preparation method, as the two waste liquids are mixed and then are processed together, the two waste liquids are neutralized by using different alkalinity and acidity of the two waste liquids, and chemical agents such as alkali or acid and the like do not need to be additionally added so as to save raw materials and simplify the process.

The invention discloses a preparation method of atorvastatin calcium, which comprises the steps of: firstly, synthesizing a primary ring segment compound of the atorvastatin calcium in the formula 5, and simultaneously synthesizing a side chain segment compound in the formula 16; carrying out pyrrole cyclization reaction on the primary ring segment compound in the formula 5and the side chain segment compound in the formula 16 to obtain a connecting intermediate compound in the formula 17; removing protective groups of the compound in the formula 17, carrying out saponification on ester groups of the compound in the formula 17 to obtain sodium salt compound in the formula 18 of the atorvastatin; and adding a calcium chloride water solution in a water solution of the compound in the formula 18 to be filtered to obtain the atorvastatin calcium. The invention has easy obtaining and low cost of the raw materials and higher synthesis yield, and can overcome the defects of the prior art.

The invention discloses a manganese-based catalyst for volatile organic compound governance, and preparation and application thereof. The manganese-based catalyst is prepared from manganese oxide and other transition metal oxides, wherein the mass fraction of the manganese oxide is smaller than 60 percent; the mass fraction of the other transition metal oxides is greater than 40 percent; the other transition metal oxides are pure MxOy; M is Co, Ce, Cr or include Co3O4 and MxOy; M is Ce and Cr; wherein x is greater than or equal to 1 but smaller than or equal to 3, and y is greater than or equal to 1 but smaller than or equal to 4. The invention further discloses a preparation method of the manganese-based catalyst, and the method is an oxalate colloidal state coprecipitation method. In the volatile organic compound governance, the disclosed manganese-based catalyst shows the characteristics of high activity, long service life, high anti-sintering capability and the like on benzene catalytic combustion reaction. The optimum catalyst can realize the complete combustion of stable-structure representative model substrate benzene in VOCs (volatile organic compounds) at the temperature being lower than 230 DEG C under the reaction conditions of normal pressure and the air speed being 30000 mL/(gh); the performance is comparable with the performance of the heavy metal catalyst.

The invention discloses a preparation method for spinel structure lithium titanate. The invention is characterized in that titanate and lithium inorganic compound and organic acid or ammonium salt with low cost is taken as the raw material; the gel precursor is compounded through simple composite water solution sol and gel route; the precursor reacts for 1 to 8 hours by ranging from 500 DEG C to 800DEG so as to obtain loosened porous nanometer spinel structure lithium titanate(Li4Ti5O12) with granularity range from 0.5 to 10 micrometers and without impurity. The granularity of the product reaches 100nm to 500nm after being grinded through a planetary ball mill. The performances such as the circulated volt-ampere characteristics, the high current performance and the Ohm essential resistance of products prepared with the invention are obviously superior to that of products prepared through solid state reaction, with circulated rate capability of 100mAh/g to 165mAh/g, thereby being high performance cathode materials for lithium ion battery. The invention has the advantages of low raw materials cost, simple procedure, suitable industrial transformation, and excellent product performance.

The invention discloses a preparation method for 2-amino-4, 6-dimethoxy pyrimidine, which includes the following steps: 1, malononitrile and methanol are used as raw materials and perform addition reaction in organic solvent to obtain 1, 3-dimethoxy malononitrile imine dihydrochloride; 2, the 1, 3-dimethoxy malononitrile imine dihydrochloride is added in alkali solution, and cyanamide and disodium hydrogen phosphate are added in the alkali solution to perform cyanamide reaction so as to obtain 3-amino-3-methoxyl-N-cyan-2-propionamidine; and 3, the 3-amino-3-methoxyl-N-cyan-2-propionamidine is added in toluene solution, stabilizing agent is added in the toluene solution to perform ring closing reaction so as to obtain 2-amino-4, 6-dimethoxy pyrimidine. The preparation method is safe, environment-friendly, economical, high in yield and purity and suitable for industrial production.

The invention discloses bacillus subtilis. The bacillus subtilis which is classified and named as G-34(Bacillus subtilis G-34) is collected in China Center for Type Culture Collection on January 6, 2014, and the collection register number is CCTCC NO:M2014003. A bacillus subtilis strain is obtained via mutation breeding on Bacillus subtilis strain separated from polluted soil of Shengli Oil Field; a culture medium with glycerin as the only carbon source can be rapidly utilized for preparing a lipopeptide biosurfactant surfactin at a high yield. With crude glycerin as a substrate, the pure surfactin can be obtained through the steps of bacillus subtilis fermenting-transforming, centrifugal degerming, acid precipitating, freeze-drying, and methanol extracting.

A process for synthesizing a furfural-phenolic aldehyde based carbon aerogel includes polymerizing furfural with phenolic resin in aqueous solution under catalysis of alkali to obtain sol and wet gel, displacing the water in wet gel by organic solvent, drying the gel in supercritical solvent, and cracking the dried gel in inert gas. The resultant carbon aerogel is a 3D space unit (3-200 nm) with a core of glass carbon particle (10 nm). Its advantages are simple regulatable range and low cost.

The present invention belongs to the technical field of nanometer materials, and particularly relates to wavelength adjustable carbon quantum dots, a preparation method and applications thereof. According to the present invention, the one-pot method (reaction kettle) is used to synthesize, the method has characteristics of simpleness, green environmental protection and low raw material prices, the reaction temperature is 140-200 DEG C, and the great industrial production prospects are provided; according to the synthesized carbon quantum dots, the inner core has a graphitized crystal lattice structure, the outer shell is a layer of amorphous carbon and contains a lot of hydrophilic functional groups, and the carbon quantum dots has good solubility and good stability in a polar solvent, and has diameter distribution of 1.5-4 nm; the fluorescence redshift of the carbon quantum dots is generated by the change of the surface functional groups; and the wavelength adjustable carbon quantum dots adopted as the novel light-emitting material has characteristics of low production cost, low biological toxicity, high light emitting efficiency, good stability, and good application prospects in optoelectronic devices and biotechnology.

The invention relates to a phosphate-coated nano-grade lithium iron phosphate cathode material and a preparation method thereof. The invention belongs to the field of energy materials, and especially relates to the field of lithium ion battery cathode materials. The invention provides coated-type nano-grade LiFePO4 with phosphate or pyrophosphate coated on the surface, and a preparation method thereof. According to the type of materials, a lithium source compound, an iron source compound, a phosphorus source compound, and an aluminum source compound (a vanadium source compound) are adopted as raw materials; the raw materials are mixed and dispersed; and a high-temperature solid-phase method is adopted, such that a phosphate or pyrophosphate amorphous film with good lithium ion conductivity is formed on the surface of nano-grade LiFePO4. With the material, Li<+> can be easily conducted to the surface of crystal grains, such that Li<+> migration ability is improved, and the dynamic performance of the LiFePO4 material can be greatly improved.

The invention discloses a method for modifying hollow glass microspheres by a chemical precipitation process. The method comprises the following steps: firstly weighing the hollow glass microspheres with mass-volume concentration of 10-20g/L into a deoiling liquid, stirring for reacting at the temperature of 80-100 DEG C for 20-30 minutes, filtering and washing the hollow glass microspheres, and then drying at the temperature of 110 DEG C for 1-2 hours; and then coating a ferroferric oxide magnetic nanoparticle film on the surfaces of the hollow glass microspheres by adopting ferrous chlorideand ferric trichloride. In the method, while the ferroferric oxide magnetic nanoparticles are prepared by the chemical precipitation process, a ferroferric oxide magnetic nanoparticle film layer is directly coated on the surfaces of the hollow glass microspheres so that the hollow glass microspheres have magnetic properties. The method is economical in raw materials and is simple and convenient in operation. Test results show that the hollow glass microspheres modified by the ferroferric oxide magnetic nanoparticles have the advantages of excellent magnetic properties and certain bonding firmness, thus meeting the actual demand.

The invention relates to explosion-proof vacuum pressure impregnated insulation device and its process which is used in high-tension motor winding loop impregnated insulation paint, it characterized in that: condensator connected with refrigerator is set on the vacuum tube between the impregnating vessel and vacuum set, and collecting vessel is set on bottom of the impregnating vessel, one end of the collecting vessel is connected with the impregnating vessel, the another end is connected with the paint pipelines of storing vessel via transferring valve and returning valve. Using the device and the process, the remained insulation paint and dissolvent in the impregnating vessel can be solved, when the vacuum set vacuumizes the impregnating vessel, the explosive fuel phenylethene deflocculating agent can not be sucked to the vacuum set to gel and jam, it possesses practical effects of explosion-proof, safe reliability, saving raw material.

The manufacturing approaches of a kind of transparent feel resin and clay, its characteristic is: It by partial shipment ethylene-acetic acid ethylene polymer, starch, third 3 alcohol altogether, antiseptic. Spices mix even to add water purification mix into a mud form thing again at first together, then put into the liquid paraffin wax and mix and mix, the vaccum packaging becomes the finished product promptly. The positive result of this invention method is: With the resin that method make being clay safe and nonpoisonous, is it glue hands very to feel, it is with high costs to overcome existing technology, the difference that the products made feel. The hardness is large, shortcoming such as being short in quality guarantee period: With the emulation flowers that its made into, hands go through the rich elasticity of the sculpture handicraft, the transparency is high, not dry to split, but add and match various kinds of colored transparent pigment wantonly, richer sense of reality of production.

The invention relates to a calcium silicate hydrate and a preparation method thereof and concrete antifreezing agent containing the calcium silicate hydrate, which pertains to the field of construction materials and manufacturing method thereof. The invention solves the problems of antifreezing agent in existing market of poor durability of concrete, steel-bar corrosion, alkaline aggregate reaction, etc., caused by large quantity of salt content in the concrete antifreezing agent. The calcium silicate hydrate is made from calcareous material, siliceous material and water. The preparation method comprises the steps that: the calcareous material and the siliceous material are evenly mixed and grinded and added with water to prepare pasty material, which goes through heat reaction at 1 to 3atm for 2 to 5h. The concrete antifreezing agent containing the calcium silicate hydrate is made of the calcium silicate hydrate, antifreezing components, water reducing components, air entraining components and fly ash. The calcium silicate hydrate uses seed crystal hydration to improve the hydration of the concrete, which leads set cement to be more impact and the long-term property of the concrete not to be reduced. The antifreezing agent of the invention does not contain chloride salts, reduces the damage effect of the steel-bar corrosion caused by mixing the chloride salts with the concrete when in construction during winter period and greatly reduces the salt content in the concrete.

The invention relates to a prevention process which is used to remove hydrogen sulfide in high-viscosity oil in oil fields, and to remove hydrogen sulfide in high-viscosity oil before exploited before well head. The technical scheme of the process comprises the following two steps, firstly allocating treating agent, adding 5-30% lithium carbonate, 3-25% ammonium acid carbonate, 3-20% sodium chloride and 2-15% octyl phenol polyoxyethylene ether according to the percentage by weight into a container which holds 30-60% water, and stirring and mixing evenly to dissolving completely, thereby obtaining the treating agent, and secondly transferring the treating agent to oil wells from the ring space of oil jacket under the condition of 25 DEG C and 101325MPa, mixing treating agent with high-viscosity oil to react, wherein hydrogen sulfide gas can reduce to 0-10ppm. The process does not need to add other devices, has wonderful economic benefits, and raw material which is used is commercialization product, and is easy to obtain. Hydrogen sulfide gas is removed in well to prevent disperse to the outside of the well and to air, and the agent is used on the high-viscosity exploitation.

The invention discloses a high-performance silica sol inorganic exterior wall coating which comprises the following components in percentage by weight: 15-25% of silica sol, 8-10% of emulsion, 38-45% of color filler, 15-20% of water and 5-10% of additive. The product conforms to the definition of 2.4.1 silicate coating in the German DIN18363 standard; since the raw material silica sol is cheap, the cost of the high-performance silica sol inorganic exterior wall coating disclosed by the invention is lower than that of a common organic exterior wall coating; meanwhile, with fine adhesion, good weather resistance and color retention and excellent resistance against water and chemicals and without peeling, the high-performance silica sol inorganic exterior wall coating has better storage stability and weather resistance than the conventional inorganic coating.

A process for extracting heparin sodium from pig lungs and co-producing polypeptide protein powder. Two products of heparin sodium and polypeptide protein powder can be obtained at the same time with one feeding. It includes the following steps: (1) raw material pretreatment; (2) enzymatic hydrolysis; (3) salt hydrolysis twice; (4) slag (protein) removal and clear liquid collection; (5) ultrafiltration and concentration to remove ash; (6) Ammonium salt precipitation; (7) precipitation of heparin sodium, and vacuum drying to obtain crude heparin sodium; (8) enzymatic precipitation; (9) decolorization; (10) pressure filtration; (11) spray drying. The process is co-production, which has a higher utilization rate of equipment than a single production process, saves raw materials, auxiliary materials, and manpower, and can reduce the production cost of heparin sodium and polypeptide protein powder; make full use of my country's pig lung resources to increase the added value of pig lung; reduce protein-containing waste Liquid waste slag pollutes the environment, and turning waste into treasure is an effective way to supplement the shortage of protein feed resources in our country.

The invention relates to a method and a device for manufacturing SIM cards. The manufacturing method comprises the following steps: a plurality of chip slots of SIM cards are milled on the standard SIM cards; SIM card chips are packaged in the slots respectively; the die cutting and the indentation are performed for the standard SIM cards of the SIM card chips packaged according to the size and the appearance of the small card of the SIM card, and a plurality of small cards of the SIM cards are separated and packaged on the standard SIM cards after the die cutting and the indentation. The manufacturing device comprises a slot milling machine, a packaging machine, a die cutting machine and a packaging machine. By adopting the method and the device in the invention, a plurality of small cards of the SIM cards can be packaged on one standard SIM card, thereby greatly improving the production efficiency and saving raw materials.

The invention relates to a preparation method of a high-temperature-resistant block-shaped SiO2-Al2O3 composite aerogel thermal insulation material. According to the invention, tetraethyl orthosilicate is adopted as a silicon source, a cheap inorganic aluminum salt is adopted as an aluminum source, and an epoxide is adopted as a network forming agent; the materials are well mixed; the mixture is subjected to sol-gel, aging and supercritical drying, such that the high-temperature-resistant SiO2-Al2O3 composite aerogel thermal insulation material is obtained. The method has the advantages of simple materials, low cost, and simple process. The process is simple to operate, such that scale production can easily be realized. The prepared high-temperature-resistant SiO2-Al2O3 composite aerogel thermal insulation material has a temperature resistance reaching 1200 DEG C in air, and has good formability. The material can be used in large thermal insulation parts in space shuttles.

The invention belongs to the technical field of organic matter catalytic degradation materials, and provides a biochar-loaded zero-valent iron composite material and a preparation method thereof. Thepreparation method comprises the following steps that 1, a biomass material is mixed with an aqueous solution of an iron source, and ultrasonic dispersion is carried out to obtain a raw material mixture, wherein the iron source is at least one of iron salt and ferrous salt; 2, a hydrothermal reaction is carried out on the raw material mixture to obtain an iron-carbon precursor; 3, the iron-carbonprecursor is calcined in an inert gas atmosphere to obtain the biochar-loaded zero-valent iron composite material. According to the method, a reducing agent is not needed, the raw materials are cheapand easy to obtain, the amount of generated wastewater is small, the operation is simple, and the method is an environment-friendly process.

The invention relates to a method utilizing calcium carbide slag as a raw material to produce a gypsum crystal whisker, and belongs to the field of inorganic material preparation and solid waste comprehensive utilization. The method utilizing calcium carbide slag as the raw material to produce the gypsum crystal whisker is characterized by comprising the following steps: (1) drying, ball milling and calcining the calcium carbide slag; (2) enabling the obtained calcium carbide slag to react with dilute sulfuric acid after the calcining treatment step, and washing and centrifuging the precipitation product; (3) mixing the solid obtained in the step (2) with water to prepare size, adding a crystal aid with a certain mass fraction in the size, transferring the mixed solution in a hydrothermal reaction kettle to carry out hydrothermal reaction, and washing, centrifuging and drying the product after the hydrothermal reaction to obtain the gypsum crystal whisker product prepared by taking the calcium carbide as the raw material. The method is mild in reaction conditions, simple in process, flexible in operation, and easy for industrial production. The prepared gypsum crystal whisker is large in draw ratio and good in reinforcing performance.

The invention relates to corrosion inhibitor for hydrogenation device with constituent as: 10-30% fat nitrogen-containing compound, 10-20% aromatic sulfur-containing compound, 0-25% organic acid esters, 15-70% aromatics, and 0-25% imidazoline derivative. A little this product can effective inhibiting corrosion and salt dirty without any negative effect to product property and successive process fit to high-concentration H2S-HCl-H2O acidic or H2S-HCl-NH3-H2O basic system. It can form dense monomolecular layer protection membrane on metal surface to prevent hydrogen embrittlement phenomenon and fit to heat exchanger, air cooler and others.

The invention belongs to the technical field of graphene preparation, and particularly discloses a method for preparing a graphene solution based on a supercritical carbon dioxide induction solution phase transformation technology. The method comprises the following steps: dispersing 25-50mg of graphite and 100-200mg of polyvinyl pyrrolidone into 5-10ml of water or ethanol; putting a dispersion liquid in a supercritical carbon dioxide reaction device; stirring the dispersion liquid at the temperature of 40-45 DEG C and under the pressure of 6-20MPa for reacting for 0.5-7 hours; after the reaction ends, releasing the pressure to the normal pressure; and removing non-stripped graphite from a reaction liquid to obtain the graphene solution. By adopting the method, the problem of difficulty in preparing high-concentration non-defective graphene at present is solved, and high-yield and high quality preparation and functionalization of the graphene are finished in one step. The method is simple and feasible, raw materials are cheap and readily-available, environmental protection is facilitated, and pollution is prevented. Meanwhile, by adopting the polyvinyl pyrrolidone for modifying the graphene with a non-covalent bond, the surface of the graphene contains polymer groups, and the structure of the graphene is not damaged. The graphene solution has very good development prospects in the fields of graphene composite materials, photoelectric functional materials, biological medicine and the like.

The invention discloses a process for preparing polymeric ferric chloride from acid waste liquid, which consists of charging hydrochloric acid waste liquid, concentrated nitric acid and hydrochloric acid into corrosion-resisting reactors, letting in oxygen under 1.0-3.0 normal atmosphere, controlling the temperature between 50-120 deg. C, and reacting 40-90 minutes.

The invention relates to the field of synthesis of drug intermediates, in particular to an intermediate of antitumor drug GDC-0449 (vismodegib) and a synthesis method of the intermediate. The synthesis method is characterized by comprising the following steps: with parachlorobenzoic-acid as a raw material, firstly carrying out iodination and then carrying out a rearrangement reaction under the action of diphenylphosphoryl azide; reacting with coupled boronic acid pinacol ester; and finally carrying out coupling reaction with 2-bromopyridine; and removing protecting groups to finally obtain the intermediate of GDC-0449. The preparation method provided by the invention has the following advantages: the raw material is cheap, the reaction conditions are moderate, the yield of each reaction is high, and the total yield is high up to 54.7%; and therefore the preparation method is suitable for large-scale preparation.

The invention provides a composite material of nanoscale cobalt based particles and nitrogen doped carbon, a synthetic method and application. The composite material is characterized by being a coated type composite with the cobalt based particles as a core and the nitrogen doped carbon as a shell, wherein the mass content of the cobalt based particles reaches 40% to 60%; the mass content of pyridine nitrogen in the composite material is 50% to 60%; and the thickness of a carbon shell protection layer is 2 to 4 nm. The material provided by the invention has high oxygen reduction reaction (ORR) ability, is related to energy storage cells, and can be used as a cathode electrocatalyst of proton exchange membrane fuel cells and rechargeable metal-air cells.