220results about How to "Good chemical inertness" patented technology

The invention discloses and provides a roasting sagger for a circulating type lithium battery anode material, which is simple in manufacturing process and structure, does not easily react with a lithium battery material, can avoid polluting the lithium battery material, does not pollute the environment and can be recycled, and a preparation method thereof. The preparation method of the roasting sagger for the circulating type lithium battery anode material comprises the following steps of: (1) uniformly mixing mullite, cordierite, aluminum oxide, corundum, kaolin, active magnesium oxide, spodumene and a bonding agent; adding the materials into a metal mould according to the weight; and pressing and molding a blank by pressing and molding equipment; (2) uniformly mixing zirconium oxide, the spodumene, cerium oxide, the corundum and the bonding agent; uniformly distributing the materials on the surface of the blank by a material distribution machine or manpower and pressing again by the pressing and molding equipment to obtain a semi-finished sagger product; and (3) drying the sagger semi-finished product and sintering. The roasting sagger disclosed by the invention can be widely applied to the field of the sagger for the lithium battery anode material.

The invention discloses raw materials for preparing an anti-corrosion mullite brick, comprising calcium hexaluminate, andalusite, sillimanite, alumina, cordierite, pyrophyllite, kaolin, refractory oxide, foaming agent and binding agent. The preparation method includes the following steps: the sillimanite, alumina, cordierite, pyrophyllite, kaolin, refractory oxide and binding agent are added into a grinding machine to be ground after material preparation, so as to obtain base material; the calcium hexaluminate and andalusite are added into a kollermill to be mixed and milled for 5-10 minutes, water is added until the surface is wetted, so as to obtain particle aggregate, and the base material is added into the kollermill to be mixed, milled and stirred with the particle aggregate, so as to obtain mixture; and water is injected into the mixture and stirring is carried out to form muddy mixture and green brick is obtained, and the green brick is placed into a kiln to be sintered into the anti-corrosion mullite brick finished product. The mullite brick prepared by the raw materials and preparation method has the advantages of low thermal conductivity, good thermal insulation property and strong corrosion resistance.

The invention discloses and provides a circulating lithium battery positive-electrode material roasting saggar surface working layer having the advantages of simple making, avoiding of the pollution of a lithium battery material because of the difficult reacting with the lithium battery material, and no environmental pollution. The surface working layer is composed of 70-90 parts by weight of zirconia, 1-5 parts by weight of cerium oxide, 1-10 parts by weight of spodumene, 5-15 parts by weight of corundum, a binder having a mass being 3-8% of the total mass of zirconia, cerium oxide, spodumene and corundum, and water having a mass being 5-10% of the total mass of zirconia, cerium oxide, spodumene and corundum. The surface working layer can be widely applied to the lithium ion battery positive-electrode material saggar field.

The microwave sensor based on the differential substrate integrated waveguide reentry resonant cavity and the microfluidic technology is provided with an upper cover plate and a lower bottom plate which are overlapped, and each of the upper cover plate and the lower bottom plate comprises a top metal layer, an intermediate dielectric layer and a bottom metal layer; wherein two resonant cavity monomers are formed between the upper layer cover plate and the lower layer bottom plate side by side left and right, a microfluidic chip is embedded in each resonant cavity monomer, and the two substrateintegrated waveguide reentry resonant cavity monomers are connected in parallel and are connected in series through a power divider. According to the invention, the microfluidic chip is embedded intothe substrate integrated waveguide reentry resonant cavity based on the differential structure configuration. By utilizing the advantages of compensation of a differential structure on environmentalinterference, high concentration of a reentry resonant cavity electric field and accurate control of trace fluid by a micro-fluidic chip, the high-sensitivity high-precision sensor which is less interfered, non-invasive and easy to integrate with other planar circuits is obtained.

The invention relates to a surface modified magnetic carrier and the preparation method, belonging to the magnetic nanometer material technology filed. The surface modified magnetic carrier has a core/shell structure, including a magnetic spinel MFe2O4 core and a silicon dioxide shell with chemical inertness and biocompatibility, which can be presented as SiO2/MFe2O4; the magnetic core is carried on silicon dioxide surface modified by a sol-gel method, the magnetic core used is a spinel ferrite prepared by a layered precursor method and the silicon dioxide precursor is a tetraethyl orthosilicate. After surface modified, the magnetic carrier has the core/shell structure, including a magnetic spinel carrier and an inert silicon dioxide surface modified layer. The invention is characterized in that the surface modified magnetic carrier not only has strong magnetism, but also has good chemical inertness and biocompatibility, the functionalization can be easily realized, the preparation method is simple, the thickness of the modified layer can be adjusted, different needs of practical application can be satisfied, and the invention is wildly applied in chemical engineering, biochemistry and medical treatment, etc.

The invention relates to a method for quickly synthesizing block graded pore structural nitrogenous porous carbon. The method can synthesize characteristic porous carbons which comprise graded pore structural nitrogenous porous carbon, macropore-rich graded pore structural nitrogenous porous carbon, macropore-rich ordered nitrogenous mesoporous carbon and graded pore structural nitrogenous magnetic porous carbon. The porous carbon is quickly synthesized in one step by resorcinol and formaldehyde serving as raw materials, amino acid or imidazole compounds and organic amine serving as catalysts and water or ethanol aqueous solution serving as a solvent through a sol-gel process. The flow is simple, the preparation cost is low, the purity of a product is high, the selective range of raw materials is broad, and the method is convenient to apply and easy to implement large-scale preparation and has large application potential and market prospect.

The invention discloses a microwave sensor based on double-reentrant cavity and microfluidics technology. The microwave sensor comprises a substrate integrated waveguide double-reentrant cavity and amicrofluidic chip embedded in the resonant cavity; the resonant cavity is composed of an upper cover plate or a lower baseplate in lamination; each of the upper cover plate and the lower baseplate comprises a top metal layer, a middle medium layer and a bottom metal layer; the middle medium layer of each of the upper cover plate and the lower baseplate comprises a plurality of metal through holesfor connecting the top metal layer and the bottom metal layer; an annular groove is formed on the lower baseplate, two symmetric capacitive posts are arranged in the groove. The microfluidic chip is embedded into the substrate integrated waveguide double-reentrant resonant cavity, the tested liquid-state dielectric medium is precisely loaded in the microfluidic, and a non-intrusive, reusable and high-sensitive multi-band liquid-state medium dielectric characteristic sensor which is easily nitrated with other plane circuit is realized by utilizing a mutual mechanism of action of the resonant-cavity-excited three-band strong-induced electric field and the dielectric medium polarization.

The invention relates to a preparation method of an anti-static polytetrafluoroethylene thin film, and belongs to the technical field of blending alloy. The preparation method of the anti-static polytetrafluoroethylene thin film comprises the following steps: (1) blending of polytetrafluoroethylene and conductive carbon black: adding polytetrafluoroethylene dispersion resin and the conductive carbon black according to the mass ratio of 100: (0.5-5) into isoparaffin organic solvent oil, uniformly mixing through a mixing machine to obtain a mixture, screening the mixture, and curing for 15h or more; (2) preparation of a blank from a co-mixture: under the condition of 0.3 to 1.0 MPa, pressing a material blank in a bidirectional pressing manner; (3) push pressing: adding the material blank into a material cavity of a plunger type extruding machine, heating the material cavity to 25 to 50 DEG C, and pushing to form a round stick under the condition of 1 to 10 MPa; (4) co-mixture pressing: pressing a polytetrafluoroethylene oil-containing base band on a calender, and then performing deoiling, stretching and high-temperature sizing to prepare the anti-static polytetrafluoroethylene thin film. The preparation method has a simple technology and is convenient to operate; the product, namely the anti-static polytetrafluoroethylene thin film has the advantages of excellent antistatic property, high-temperature resistance, corrosion resistance, abrasion resistance, high intensity, long service life and the like.

The invention relates to an anti-interface reaction composite ceramic shell. The shell consists of a surface layer and a reinforcing layer, the surface layer is made of yttria powder as refractory powder, yttria sand as refractory aggregate and silica sol as binder by adopting a multi-coating method, the reinforcing layer is made of electro-fused mullite powder as refractory powder, electro-fused corundum sand as refractory aggregate and silica sol as binder by adopting the multi-coating method, the reinforcing layer is fixed on the top surface of the surface layer, and the reinforcing layer and the surface layer are of an integrated structure; the total thickness of the shell is 5mm to 13mm, wherein the thickness of the surface layer is 0.15mm to 1.4mm. After the shell produced by the method is roasted, the surface of the cavity of the shell is smooth and does not have cracks, the surface does not have floating sand and floating powder, and the shape of a blade wax pattern is completely and clearly copied.

The invention discloses a preparation method of a multi-core MgB2 superconducting wire. The method comprises: first, precursor power is prepared; second, the precursor power is placed in a Ta tube to prepare a tubulation complex; third, groove rolling is carried out on a single core wire; fourth, a NbTi/Cu composite rod and a plurality of single core wires are placed in an oxygen-free copper tubefor assembling so as to obtain a secondary composite rod; fifth, rotary swaging and drawing are carried out on the secondary composite rod, groove rolling is carried out and rotary swaging and drawing are carried out again, so that a multi-core wire is obtained; and sixth, heat treatment is carried out on the multi-core wire to obtain a multi-core MgB2 superconducting wire. According to the invention, processes of rotary swaging, drawing and groove rolling are combined and employed; therefore, not only is density of the multi-core wire improved, but also connectivity between crystal grains can be improved; it is beneficial to prepare a multi-core MgB2 superconducting wire with high performances; and the prepared wire has high mechanical strength and can bear great stress and strain without obvious reduction of the superconductive current carrying performance, so that a superconducting wire practical requirement can be well met.

The present invention discloses one kind of hollow cage-shaped nanometer solid lubricant and its preparation process. Spherical nanometer MoO3 or WO3 particle is first prepared through an ultrasonic and chemical precipitation process and surface coated with S or Se, and hollow cage-shaped nanometer solid lubricant of IF-MoS2, IF-MoSe2, IF-WS2 or IF-WSe2 of particle size 40-100 nm is then prepared through further vulcanization or selenation reaction. This kind of solid lubricant may be used alone or as additive added into lubricant oil or grease to form composite lubricant oil or grease to reduce friction coefficient, reduce wear and raise extreme pressure resistance. At the same time, the solid lubricant can meet the lubricant requirement in high temperature, low temperature, high vacuum, high humidity, high corrosion, high radiation, high load and other harsh conditions.

The invention discloses a preparation method of an yttrium oxide moulding shell used for titanium alloy precision casting. A moulding shell surface layer coating comprises yttrium oxide refractory powder, ammonium zirconium carbonate binder, a wetting agent and a defoaming agent. The preparation method includes the steps of preparation of the surface layer coating, preparation of a back layer coating, preparation of the moulding shell, dewaxing, calcinations and the like. By means of the yttrium oxide moulding shell used for titanium alloy precision casting and the preparation method thereof, the problems that an existing moulding shell is prone to redissolution under the influence of water in the preparation and dewaxing processes, and steam dewaxing cannot be achieved are solved. The binder used for the coating is made of ammonium zirconium carbonate and is low in price, and the prepared coating is stable and reliable and cannot generate redissolution after being dried under the influence of water. The prepared surface layer coating is good in smearing performance and high in refractoriness, steam dewaxing is adopted, no pollution is caused to the environment, and the prepared surface layer moulding shell has no influence on the human health. The prepared yttrium oxide moulding shell is wide in application range, an interface reaction layer is small, titanium alloy casts are high in precision, performance is excellent, and later-period finishing is conducted easily.

The invention discloses a technology for coating a ZrO2/Fe2O3 composite film on the surface of diamond by a sol-gel method. The technology comprises the following steps of preparing stable Fe2O3 sol by FeCl3 hydrolysis, dipping a diamond abrasive subjected to surface treatment into the Fe2O3 sol, carrying out drying and calcination on the diamond abrasive to obtain a diamond abrasive of which the surface is uniformly coated with a Fe2O3 film, preparing stable ZrO2 sol by ZrOCl2 hydrolysis, dipping the diamond abrasive of which the surface is uniformly coated with the Fe2O3 film into the ZrO2 sol, and carrying out drying and calcination on the diamond abrasive to obtain the diamond abrasive coated with the ZrO2/Fe2O3 composite film. The ZrO2/Fe2O3 composite film can prevent the diamond abrasive from a harmful chemical reaction with a ceramic binder in sintering, improve wettability of the diamond abrasive and the ceramic binder, improve the diamond abrasive holding capacity of the ceramic binder, and prolong a service life of a diamond ceramic grinding tool.

The invention discloses a method for improving the binding force and the tribological property of a fullerene-like thin film. According to the method, by means of a plasma enhanced chemical vapor deposition technology, nitrogen, phosphine and methane are used as a gas source, and fullerene-like thin film is deposited on a substrate under the joint effects of a radio frequency power source and pulse negative bias. The method is characterized in that the process is simple, economic and efficient, the deposition temperature is low, repeatability is good, the friction coefficient is extremely low,and the improvement effect of the binding force of the steel substrate and the fullerene-like thin film is obvious. By adopting the method, the binding force and the tribological property of the fullerene-like thin film can be substantially improved, and the fullerene-like thin film is made to play the lubricating effect better. The method is applicable to the stainless steel surface and is alsoapplicable to the fields of ceramics, high polymer materials, composite materials and other materials, and has broad application prospects. Thus, the method for improving the binding force and the tribological property is huge in application potential.

The invention relates to a preparation method of an electrochemical aptamer sensor for the detection of streptomycin. The method is as below: modifying an electrode surface layer by layer by a porous carbon nanospheres (PCNS), polyaniline-copper oxide-gold cage (PANI-CuO-GM) composite, standing to a dry state at normal temperature, then fixing to a streptomycin aptamer to the electrode surface modified by the above nano material, and blocking non-specific binding sites by using bovine serum albumin as a blocking agent; conducting electrochemical test on the prepared streptomycin aptamer sensor, and detecting the streptomycin concentration through current change before and after the combination of the streptomycin with aptamer. The preparation and detection method of the streptomycin aptamer sensor system well solve the tedious procedures of the current sensor preparation, and uses carbon material as a signal amplification material to greatly reduce the manufacturing cost. The electrodes of the same batch of sensors have good identity, and can achieve mass production and commercialization.

The invention discloses a processing method of high-hardness rolls, comprising the following steps: (1) the roll with the hardness of 86HSD to 99HSD is placed on a lathe, a CBN polycrystalline blade is used as a lathe tool for carrying out rough machining to the roll at the cutting speed of 50 to 90m/min, the feed amount is 0.7 to 1.2mm/r, and the cutting depth is 0.5 to 1.5mm; (2) the CBN polycrystalline blade is used as the lathe tool for carrying out semifinishing machining to the roll at the cutting speed of 100 to 180m/min, the feed amount is 0.35 to 0.5mm/r, and the cutting depth is 0.2 to 0.5mm; and (3) the CBN polycrystalline blade is used as the lathe tool for carrying out finishing machining to the roll at the cutting speed of 200 to 250m/min, the feed amount is 0.15 to 0.3mm/r, and the cutting depth is 0.1 to 0.5mm. The method has short processing time, high efficiency and low cost.

A microplate assembly with closure comprises a microplate base 101 having a geometric array of wells 103. Vials 113 of borosilicate glass inserted into the wells comprise flanges on the top portion of the vials. Closure 117 comprises an array of caps 119 having a complementary geometric pattern to the wells of the microplate base. The caps each comprises a septum and are connected by a thin membrane 121. Each cap comprises a sidewall 403 having a vial engagement ring which snaps over the flange 115 of the vials. Septum openings 135 in the caps extend through the top of the caps and provide a means to fill and evacuate the vials with a penetration device passing through the septa of the caps of the closure.

The invention relates to a high-temperature wide-frequency wave-transparent composite material, which is characterized in that the material comprises the following two parts: a porous silicon nitride substrate, and a lithium aluminium silicon composite ceramic coating, wherein the lithium aluminium silicon composite ceramic coating is coated on the surface of the porous silicon nitride substrate. According to the invention, the coating of the silicon nitride substrate surface is dense, smooth, and bright, and has no cracks; good bonding strength is provided between the silicon nitride substrate and the lithium aluminium silicon composite ceramic coating; the prepared material has good dielectric properties, and good ablation resistance, and the insertion loss of the material after ablation is respectively increased by 0.08 dB and 0.02 dB at 2.3 G and 35 G; the material has good impact resistance and oxidation resistance, high strength, high rigidity, and good chemical inertness.

The invention discloses an environment-friendly grouting material based on red soil in a Wumeng Mountain area. The environment-friendly grouting material based on the red soil in the Wumeng Mountain area is CL-C type clay cement paste, and the CL-C type clay cement paste is composed of clay paste, cement and additives. The environment-friendly grouting material based on the red soil in the WumengMountain area is good in past stability, the paste is not separated or precipitated in pumping and diffusion processes, and in a solidification process, the water bleeding is little, the concretion rate is high, and the anti-permeability performance is good. Clay particles in the clay paste are fine, are low in sand content, and have a high dispersion degree, so that the environment-friendly grouting material based on the red soil in the Wumeng Mountain area is good in fluidity and easily permeates into fine cracks of rock stratums. In a Maoping lead-zinc ore 112-line vertical shaft pre-grouting water-plugging engineering of the Yiliang Chihong mining limited company, 15189.132 m<3> of clay cement paste prepared from the environment-friendly grouting material provided by the invention is injected, and the residual water burst amount of the well shaft after grouting is about 4.83 m<3>/h and meets the qualified standard of a construction contract.

A novel organic silicon defoamer for landfill leachate treatment is prepared from the following raw materials in percentage by mass: 10-20% of polyether modified polydimethylsiloxane with the viscosity of 500-1500 mPa.s; 1-5% of nanoscale fumed silica with the particle size of 10-30 nm; 1-5% of modified silicone oil; 2-8% of fatty acid polyoxyethylene ester with the HLB value of 6-12; 3-10% of anemulsifier; 1-6% of a thickening agent; 1-2% of a biological inhibitor; and the balance of deionized water. The organic silicon defoamer for landfill leachate treatment not only has the characteristics of rapid defoaming and good foam inhibition, but also can resist the high temperature of 100-120 DEG C, and is not easy to demulsify and separate out in a complex organic matter system.

The invention discloses a polysiloxane rust-proof liquid, a preparation method and the application thereof. The polysiloxane rust-proof liquid comprises the components by weight percent: 5-60% of polysiloxane, 0.01-10% of cross linking reagent, 0.01-10% of catalyst and 45-90% of solvent. The polysiloxane rust-proof liquid is colorless, smelless and non-toxic, in accordance with the regulation of food industry as well as low in production cost and simple in operation, not only solves the problems that the rust-proof liquid is complicated in manufacturing and coating technique, contains harmful substance, is not environment-friendly and has overhigh economic cost, but also fill in the gap of preventing the rust of metal bottle cap trim in China, thus being applicable to metal bottle caps of various drinks; furthermore, by adopting the metal bottle cap trim polysiloxane rust-proof liquid, a hydrophobic adsorption film can be formed at the metal bottle cap trim, so that the moisture of the external environment can be isolated, and the corrosion resistant effect can be achieved.

The invention discloses a titanium dioxide-multi-walled carbon nano-tube-polydimethylsiloxane composite functional material. The composite functional material refers to microspheres prepared from polydimethylsiloxane serving as a substrate and a dried titanium dioxide-multi-walled carbon nano-tube powder. The composite functional material is capable of rapidly collecting pollutants in sewage and efficiently degrading organic pollutants. The invention further discloses a preparation method and the application method of the titanium dioxide-multi-walled carbon nano-tube-polydimethylsiloxane composite functional material, and is particularly applied to the technical field of sewage treatment.

The invention discloses a method for taking super-paramagnetism nanometer particles as a solid phase to perform peptide synthesis and synchronously construct a polypeptide magnetic nanometer probe. The method comprises: preparing silica-cladded super-paramagnetism nanometer particles and rink-amide-linker-coupled silica-cladded super-paramagnetism nanometer particles; respectively taking the two kinds of particles as solid phases to perform peptide synthesis; and adding a K reagent into two groups of the solid phases. Aiming at the silica-cladded super-paramagnetism nanometer particles, the K reagent is capable of removing a side-chain protection group of the synthetic polypeptide but not cutting off the polypeptide, so that the polypeptide magnetic nanometer probe is obtained. Aiming at the rink-amide-linker-coupled silica-cladded super-paramagnetism nanometer particles, the K reagent is capable of removing the side-chain protection group of the synthetic polypeptide and cutting off the polypeptide from the solid phase, so that the synthetic polypeptide is obtained. According to the method, the super-paramagnetism nanometer particles are capable of being rapidly divorced from a reaction system under the effect of an external magnetic field , so that synthesis is greatly facilitated, also polypeptide can be simply precisely synthesized, also the polypeptide magnetic nanometer probe is synchronously constructed for confirming the biological functions of the synthetic peptide in vitro and in vivo, and also the method is applicable to establishment of large-scale polypeptide library and applicable to rapidly screening out functional peptides.

The invention relates to the field of preparation of consumables of printing products, in particular to a manufacturing method of weather-resistant, waterproof and high-quality special paper for printing. The manufacturing method comprises the following steps of preparation of initial paper pulp, preparation of a toughening additive, preparation of papercopying pulp, preparation of paper blanks, preparation of an adhesive film solution, and applying of the adhesive film layer. The prepared paper has the advantages that the strength is high, and the printing effect is excellent; the water-resistant, oil-resistant, chemical-resistant and aging-resistant properties are realized; the heat insulation property is good; the certain flame-retardant effect is realized; the paper is flat in surface,is difficult to warp, and is suitable for drum printing; by adopting a large amount of waste paper pulp fiber, the resource is saved, the weight of the paper is light, and the certain fluorescent property is realized; when the paper is used as the advertisement paper, the vision effect is improved; the good bacteria-inhibiting and insect-preventing effects are realized; the added components are free from poison and harm, the safe and environment-friendly effects are realized, and the higher practical value and good application prospect are realized.