1160results about How to "No impurities" patented technology

The invention discloses a preparation method of copper-coated tungsten composite powder, belonging to the technical field of powder metallurgy. Corresponding tungsten powder and blue vitriod are employed according to the weight ratio of composite powder to be prepared and the tungsten powder is pre-treated; copper sulphate and seignette sol are dissolved into solution; bipyridine is added and NaOH is used to adjust pH value to 12-14; an appropriate amount of formaldehyde solution and the tungsten powder are added; the mixture is heated and then stirred continuously in constant-temperature bathing at 30-60 DEG C until the tungsten powder is red; the tungsten powder is washed, dried, reduced and annealed, thereby obtaining copper-coated tungsten composite powder. The preparation method of copper-coated tungsten composite powder has wide application range and is applicable to tungsten-powder coating coppers with different finenesses and shapes. The preparation method of copper-coated tungsten composite powder prepares copper-coated tungsten composite powder in different content ratios according to different requirements. The copper-coated tungsten composite powder obtained by the method of the invention has excellent sintering activity, thereby improving the combination property of tungsten copper alloy.

The invention discloses an electromagnetic modulation fusion emitting device which comprises an induction heating coil, a three-phase linear induction heating coil and a spray nozzle, wherein the three-phase linear induction heating coil is arranged under the induction heating coil; a support cylinder is arranged at the periphery of the induction heating coil; the lower end of the support cylinder is connected with the spray nozzle; two ends of the induction heating coil are connected to an alternating power supply; the three-phase linear induction heating coil is arranged into a three-phase four-wire system circuit structure; four ends of the three-phase linear induction heating coil are respectively connected to a three-phase pulse alternating power supply. A levitation melting technology and a linear induction motor principle technology adopted by the electromagnetic modulation fusion emitting device are both common electromagnetic induction technologies in a traditional industry, the process is mature, the manufacturing cost and the durability are superior to those of a selected laser sintering (SLS) technology adopting a high-power laser, and the electromagnetic modulation fusion emitting device is more suitable for applicable in the traditional industry.

The invention relates to a luminous metal-organic framework material with a chemical sensing function, a preparation method of the luminous metal-organic framework material, and an application of the material in detection of nitrobenzene organic matters. The preparation method comprises the following steps of: dissolving 5-(4-pyridyl)-1, 3-phthalic acid and zinc salt into an organic solvent in a certain proportion; and then synthesizing in a solvothermal way so as to obtain the luminous metal-organic framework material. The preparation method is simple in preparation process, high in material purity and excellent in stability. The synthesized metal organic framework material has the maximum emission wavelength of 381nm in water, and the fluorescence intensity of the synthesized metal organic framework material is gradually reduced as the unceasing increase of the concentration of the nitrobenzene organic matters, therefore, the material can be well applied to the detection of the nitrobenzene organic matters, and has the advantages of being fast in speed, simple, convenient, great in selectivity, high in sensitivity, etc.

The invention relates to the extraction and utilization of rosmarinus officinalis, and discloses a method for comprehensively extracting the rosmarinus officinalis and preparing a fat-soluble instant antioxidant. The method comprises the following steps of: mincing raw materials rosmarinus officinalis tender stems or leaves which are dried in shade, and distilling the minced rosmarinus officinalis tender stems or leaves by using water vapor to obtain rosmarinus officinalis essential oil and distillation residues; and performing percolation extraction on the distillation residues by using ethanol, performing ethanol recovery treatment on extracting solution, obtaining a water-soluble antioxidant from a water phase, dissolving precipitates by using a low-boiling solvent, and decreaming a carnosic acid into cooking oil after decoloring; and performing concentration, and recovering the solvent to obtain a fat-soluble instant antioxidant product with the carnosic acid content of 5 to 20 percent. The method has the advantages of high yield, full raw material utilization, low production cost and the like; and in addition, the application performance of a rosmarinus officinalis antioxidant product is greatly improved, and the rosmarinus officinalis antioxidant can be more conveniently and efficiently used.

The invention discloses a magnetic carbon-based iron oxide compound material and a preparation method of the magnetic carbon-based iron oxide compound material. Particularly, the invention discloses a prepraation method of the magnetic carbon-based iron oxide compound material. The preparation method comprises the following steps of: (a) providing a mixture comprising a carbon-based precursor, elemental iron and a solvent; and (b) carrying out heating reaction on the mixture in the step (a), thus obtaining the carbon-based iron oxide compound material. The method has the advantages that materials are common and are easily available, and the process is simple, safe and effective and the like. The obtained compound material has stable magnetism, and is wide in application.

Then invention relates to a radix bardanae health drink and a method for producing drinks, in particular to a method for producing a radix bardanae drink. The invention is realized by the following technical proposal steps: 1. Selecting the fresh radix bardanae with no mustiness and metamorphism, 2. Using fluid purifying water to rinse clean, 3. Cutting into slices and drying, 4. Extracting, 5. Filtering, 6. Preparing, 7.Antisepticising, 8. Canning; thereby being able to obtain the radix bardanae health drink. The invention has the advantages of uniform color, no impurities, moderate saccharinity and high nutrition value; the invention also has the advantages of specific freshness of the radix bardanae, harmonious taste and no obvious taste of Chinese traditional medicine soup, etc. The radix bardanae health drink produced by the invention is convenient for long period storage, the application and popularization of the radix bardanae and better service for Chinese people.

The invention discloses a wax for impregnation and encapsulation of ceramic dielectric capacitors and its preparation method. The wax comprises, by weight: 35%-70% of a microcrystalline wax, 25%-60% of paraffin, 1%-5% of a high-molecular wax, and 0.1-1.5% of an anti-oxidant. The wax for impregnation and encapsulation in the invention has the characteristics of good insulativity, moisture resistance, heat resistance and fluidity, thin impregnating coating, suitable physical and chemical performance, good using performance, nontoxicity, no pollution as well as environmental friendliness, and issuitable for impregnation and encapsulation of ceramic dielectric capacitors.

The invention relates to a health-care product, in particular to a compound health-care drink which sovles the problems of the existing health-care drink that the taste is bad, the additive contained is harmful to human body, and the nutritious ingredients of red dates are damaged due to improper preparation methods. The compound health-care drink is manufactured from red dates, walnut kernels, medlars, sucrose fatty acid ester and xanthan gum. The preparing steps include that red date juice, walnut juice and medlar juice are prepared; the prepared red date juice, walnut juice and medlar juice are mixed with the sucrose fatty acid ester and the xanthan gum, stirred evenly; and then homogenized; vacuum degassing is carried out and finally filling and sterilizing are carried out. The compound health-care drink decreases losses of various nutritious ingredients in the materials and preserves the original nutrition, color and flavor of each contained material to the utmost extent. The compound health-care drink is also characterized by light coffee color, pleasantly sweet and acid taste, full-bodied flavor of the red dates as well as aroma of walnuts. The compound health-care drink appears in form of uniform and stable emulsion without sedimentation, delamination or foreign matter, which is a natural and green drink product with high nutritive value.

The invention relates to a processing process and a formula for a red jujube drink. In parts by weight, each 1,000 parts of the red jujube drink comprises the following raw materials: 300-450 parts of clear red jujube juice, 2-4 parts of honey, 30-50 parts of white granulated sugar, 1.1-1.7 parts of auxiliary materials and the balance of water. The process comprises the following steps: performing enzymolysis and extraction on red jujubes, filtering, and blending to obtain the red jujube drink. The red jujube drink is brown red in color, uniform, stable, free of boiled jujube taste and suspended jujube flesh, thick in red jujube aroma in the mouth and moderate in sourness and sweetness, has the effects of slaking thirst, producing saliva and protecting health, and is a sour and sweet drink suitable for people of all ages. According to the process, the bitter taste of the red jujube juice is removed, the red jujube drink is uniform, stable and free of impurities, the effective ingredients of the red jujube raw material cannot be destroyed, and the red jujube drink is good in natural property.

The invention provides laser cladding alloy powder enhanced with oxide particles and a preparation method thereof. The laser cladding alloy powder enhanced with the oxide particles is characterized in that the laser cladding alloy powder enhanced with the oxide particles consists of a matrix alloy powder, the oxide particles and a binder, wherein the proportion is 50-98% of the matrix alloy powder, 1-45% of WC or TiC or a mixture powder of WC and TiC and 1-45% of a combined mixture powder of more than two or one of Al2O3, Cr3C2 and ZrO2. The preparation technological steps of the laser cladding alloy powder enhanced with the oxide particles are preparing the matrix alloy powder, adding the oxide particles, adding the binder, stirring and ball-milling, combining the powder, drying, crushing and sieving. The laser cladding alloy powder enhanced with the oxide particles provided by the invention not only has higher hardness and flexibility, but also has excellent abrasion resistance and corrosion resistance, thereby being quite applicable for the laser cladding of parts under the working conditions of high impact and high abrasion resistance; and moreover, the segregation generated due to great disparity between the proportions of all components can be effectively prevented during the storage, transportation and use processes.

A technology for industrially preparing the natural cocoon wool sheet includes choosing cocoon, immersing in warm water, adding caustic soda in the water tank of beating machine, heating the water to80 deg.C, cyclically scalding the cocoon by hot water while pulling silks while removing pupa to become cocoon wool sheet, rinsing in clean water at 90 deg.C for 4-5 hr, flushing, dewatering, baking and packing. A method for in-situ processing the natural silk quilt is also disclosed.

The invention belongs to the technical field of drinking foods, and particularly relates to a rose drink which is prepared by adopting steps of cleaning, juicing and filtering, and particularly adopting the steps: cleaning, dewatering and juicing picked fresh rose petals washed by using clear water, filtering a mixture of juiced rose petals, citric acid and water, and adding white granulated sugar in filtrate for regulating the sugar degree to prepare the rose drink. The rose drink provided by the invention is simple in preparing process; and the filtered rose drink has no impurities when being drunk, and is good in mouth feel after the citric acid is added; fresh rose flowers are used as a freshly juicing raw material, and nutritional ingredients are fully dissolved out in a juicing process of the rose flowers, so that nutrient substances in the rose flowers are completely preserved in the rose drink; and the citric acid is used as a natural sterilizing agent, and thus the expiration date of the prepared rose drink can be prolonged.

The invention discloses a method for preparing a cathode material of lithium iron phosphate for a lithium ion battery. The method comprises the following steps: firstly, adding a certain amount of deionized water into a ball mill, and adding lithium dihydrogen phosphate and ionic compound with good conductivity into the ball mill for stirring and ball milling at a high speed; secondly, adding iron oxide for stirring and ball milling at a high speed, and adding a certain amount of anhydrous ethanol as a dispersing agent; and finally, adding superfine conductive carbon black for full mixing and stirring to obtain evenly mixed powder by spray drying at a high speed, adding the powder into a mixing roll for mixing and granule crushing, and pressing the mixed powder into a block to improve the density of materials once again. After being preserved and sintered for 2 to 6 hours at 600 to 800 DEG C in a non-oxidizing sintering furnace and cooled below 50 DEG C, the materials after tablet pressing and granulation are discharged, crushed, refined and sifted, and the powder is dried so as to obtain lithium iron phosphate powder with no impurities, single structure and small granule size distribution. In addition, the preparation process method through improvement significantly reduces the cost for preparing the lithium iron phosphate and has little pollution.

The invention belongs to the technical field of molecular sieves and preparation methods thereof, and particularly relates to a technique for preparing an Fe-ZSM-5 molecular sieve. According to the method, natural mineral diatomite is used as the raw material to provide all of the silicon source, aluminum source and iron source required by synthesis of Fe-ZSM-5, and conventional hydrothermal crystallization is carried out under the condition of not adding any organic template. The natural mineral diatomite is used as the raw material to provide all the silicon and aluminum sources required by the synthesis of the molecular sieve, the Fe2O3 impurity contained in the diatomite raw material is fully utilized as the iron source, and a conventional hydrothermal process is carried out under the condition of not adding any organic template, thereby preparing the framework-iron-containing ZSM-5 molecular sieve (Fe-ZSM-5 molecular sieve). The method has obvious advantages in the aspects of widening the molecular sieve synthesis raw material range, enhancing the added value of the natural mineral product, lowering the molecular sieve production cost, reducing the environmental pollution and the like.

The invention relates to an oil additive and particularly discloses a methanol fuel additive and methanol gasoline prepared with the same. The methanol fuel additive comprises the following components in parts by weight: 15.9 to 20 parts of modifier, 8 to 12 parts of oxidant, 12 to 8 parts of activating agent, 15 to 17 parts of antiknock, 0.54 to 2.48 parts of cleaning agent, 40.5 to 34.5 parts of catalyst, 8 to 6 parts of corrosion inhibitor and 0.06 to 0.02 part of anti-attrition lubricant. According to the methanol gasoline prepared with the additive, methanol and gasoline can be completely soluble or instantly soluble after being mixed, so that the methanol gasoline is clear and bright in appearance, is not layered and is free from impurities; and the methanol gasoline has the characteristics of high octane value, stable burning, sufficient power and tiny contained colloid in running tests and examination, causes no corrosion and swelling reaction on materials of the conventional gasoline car, and can be mixed with unleaded gasoline for use or directly used on the premise of not changing an engine and an oil supply system of the conventional gasoline car.

The invention relates to a kind of impregnation enveloping wax combination used for electronic components, which contains petroleum wax, petroleum resin, and adhesion promoter. The impregnation enveloping wax of the invention has the advantages such as high drop melting point, excellent high-temperature property, fine electrical property, low melting viscosity, good adhesivity, fine moisture resistance, and so on. Coil impregnation-enveloping materials for exclusive use to existing technology electronic components all take resin as main materials, and the impregnation-enveloping materials have higher cost. The impregnation encapsulating wax of the invention adapts to the impregnation and envelopment of inductance coil, mid-frequency and high frequency electric coil, and other electronic components.