85results about How to "Improve crystal state" patented technology

The invention discloses a nano SiO2 composite material thickened oil viscosity reducer and a preparation method thereof, which belongs to the technical field of nano SiO2 composite material preparation and application thereof. The viscosity reducer is nano (polymethacrylate higher alcohol-acrylamide)/SiO2 composite material. The preparation method comprises the following steps: 1)pre-modifying the surface of the nano SiO2 by a silane coupling agent; and 2)performing graft copolymerization of (methyl)acrylate higher alcohol and acrylamide on the surface of nano SiO2 to obtain the (polymethacrylate higher alcohol-acrylamide)/SiO2 composite material powder. The nano viscosity reducer has the advantages of good viscosity reducing effect, low cost, simple production and no pollution during a cleaning process. Through the experiment, the viscosity reducing rate of the nano viscosity reducer to the high wax thickened oil at Daqing dandong station is 72.10% at 40 DEG C.

The invention relates high conduction heat-resistant aluminum alloy wire manufacturing method. It includes the following steps: adding aluminum ingot with 0.06% silicon, not more than 0.16% iron and 0.01% copper, 0.015% four elements Ti, V, Cr, Mn, and 0.03% other impurity into shaft furnace to melt; adding 0.03-0.5% zirconium as additional element; stirring; refining; degassing; deslagging; using solid covering agent to cover aluminum pad surface; standing for 445-60 minutes; using high speed spectrum analyzer to test, monitor, adjust each element, control element content; filtering; continuous casting to form aluminum casting ingot; tandem rolling; drawing to form aluminum alloy wire with need diameter.

The invention discloses a nano composite material high-wax-content heavy oil viscosity reducer and a preparation method thereof and belongs to the technical field of nano composite material preparation and application. The viscosity reducer is a nano polymethylacrylic acid high carbon alcohol-acrylamide composite material. The preparation method of the viscosity reducer comprises the steps that surface pre-modification is conducted on synthesized MSN by using a silane coupling agent, and polymethylacrylic acid high carbon alcohol-acrylamide composite material powder is obtained through graft copolymerization of methylacrylic acid high carbon alcohol-acrylamide on the surface and pore channels of the MSN. The nano viscosity reducer has a good viscosity reduction effect, is low in cost, simple in production and clean and free of pollution in the process. An experiment proves that the viscosity reduction rate of the nano composite material high-wax-content heavy oil viscosity reducer is 70.30% Daqing Linyuan Sanku high-wax-content heavy oil at the temperature of 40 DEG C and is 79.37% for Daqing Dandong station high-wax-content heavy oil at the temperature of 40 DEG C. The steps are simple, the operation is convenient, and the practicability is strong.

The present invention belongs to the field of peroxide preparing technology in organic chemistry. Into reactor, water is added in advance, thiourea is thrown in batches and hydrogen peroxide solution containing stabilizer is dripped to produce thiourea dioxide. After finishing the reaction, thiourea dioxide is filtered and stoved to obtain crystallized thiourea dioxide powder. The added amountof the stabilizer is 0.1-5 wt% of thiourea and crystal habit modifier in 0..005-2 wt% of thiourea may be also added into water. The improved thiourea dioxide producing process has improved crystal state of thiourea dioxide and raised product purity and is suitable for industrial production in large scale.

The invention discloses a colloidal emulsion explosive for high detonation velocity deep water blasting, which comprises the following components: main oxidant, auxiliary oxidant, reducing agent, water, additive, emulsifier, sensitizer, density regulator, crystal shape modifier, Stabilizer, foaming agent, sensitization aid, flame suppressant, adhesive, the explosive has high detonation velocity, good detonation performance, high safety, low production cost, no poison and no pollution.

The invention relates to a method for preparing a high-performance ZnO-based transparent conductive oxide thin film at a low temperature. The method comprises the following steps of 1), zinc acetate dihydrate and Al source and Sn source are combined according to requirements and are dissolved in ethylene glycol monomethyl ether, and then stabilizer is added dropwise into zinc-containing solution,after heating, stirring and filtering, and fully aging at room temperature, clear and transparent sol is obtained for later use; 2) substrate is cleaned up, the sol is uniformly spin-coated on the surface of the substrate by a glue homogenizing machine, the substrate is carried out pre-heat treatment, the spin coating process and the pre-heat treatment process are repeated until a gel film is obtained; and 3), first-step annealing treatment on the gel film in an air atmosphere is carried out, second-step annealing treatment in the atmosphere of nitrogen or argon is carried out, and the high-performance ZnO-based transparent conductive oxide thin film is obtained when cooling to room temperature. According to the method for preparing the high-performance ZnO-based transparent conductive oxide thin film at the low temperature, the preparation method is simple in process, the lattice energy of the reaction system can be effectively reduced, and the thin film can be crystallized in advanceat the temperature of about 450 DEG C.

The invention discloses a CIGS (Copper Indium Gallium Selenide)-based thin film solar cell and a preparation method thereof. The preparation method comprises the following steps: forming an alkali filter layer containing at least one element of Li and K on a glass substrate; forming a back electrode layer on the alkali filter layer; forming a light absorption layer on the back electrode; forming a buffer layer on the light absorption layer; forming an n-type transparent conductive layer on the buffer layer, and is characterized by being provided with the alkali filter layer with certain thickness to allow a part of alkali metal ions to be diffused into the CIGS-based light absorption layer from the glass substrate, wherein a certain amount of alkali metal is further added on the outer side of the CIGS-based light absorption layer.

The invention discloses tilting type magnesium alloy melting and heat preservation equipment. The equipment comprises a machine frame, a melting and heat preservation device is arranged on the machineframe, and the melting heat preservation device can be overturned relative to the machine frame, the melting and heat preservation device is driven by a tilting device to be overturned, and a tiltingspeed of the melting and heat preservation device is uniform, the tilting speed of the melting and heat preservation device is adjustable, so that liquid outlet speed is uniform, a crystallization state is facilitated. According to the invention, a walking mechanism drives the machine frame to move, the melting and heat preservation device is used for pouring the molten liquid into a casting moldfor casting, the melting and heat preservation device of the walking mechanism can meet the requirements of a plurality of casting stations, and a sealing cover is arranged at the top of the meltingand heat preservation device, the top of a crucible is provided with a heat preservation cover, and the heat preservation cover is of a hollow structure with two layers, a raw material feeding hole isformed in one side of the heat preservation cover, and the raw material feeding opening is an open type opening, a liquid outlet is formed in the other side of the heat preservation cover; and the sealing cover at the top of the melting and heat preservation device and the heat preservation cover at the top of the crucible are arranged, so that the arrangement of a alloy liquid is facilitated, and oxidation is reduced.

The invention discloses a preparation method of a spinel-mullite ceramic sagger, and relates to the spinel-mullite ceramic sagger. A ceramic sagger matrix is prepared from the following raw materialsand a colloidal solution, and the raw materials comprise the components in percentage by weight: 40-50% of fused magnesia-alumina spinel, 15-25% of fused mullite, 15-20% of aluminum oxide micro powder, 4-8% of aluminum titanate fine powder, 5-10% of zirconium oxide, 3-5% of magnesite micro powder and 3-5% of clay fine powder; the colloidal solution is a gel, and the gel comprises the components inpercentage by weight: 10-14% of acrylamide, 0.2-0.4% of methylene bisacrylamide, 0.4-0.6% of ammonium persulfate, 0.2-0.4% of tetramethylethylenediamine and the balance being water, wherein the weight of the gel accounts for 8%-12% of the total weight of the raw materials. The preparation method comprises the steps of slurry preparation, injection molding, demolding, drying and firing. A productsintered by the method is high in volume density, high in strength, high in thermal shock stability and excellent in use performance.

The invention relates to a method for preparing an Fe-C-TiO2 nanotube array, which comprises: firstly, preparing a titanium oxide nanotube array on a Ti substrate material by electrolysis in a mixed solution of hydrofluoric acid and dimethyl sulfoxide, and roasting the obtained titanium oxide nanotube array for crystallization molding; secondly, calcinating the TiO2 nanotube array in an oxygen-free vacuum system, and taking polyethylene glycol as a carbon source to prepare a C-TiO2 composite nanotube array; and thirdly, electroplating the C-TiO2 composite nanotube array in an FeSO4 electroplate liquid, and preparing the Fe-C-TiO2 nanotube array. The method has the advantages that the method has simple and mature technology and convenient operation, can effectively strengthen the absorption capacity and the electronic conduction capacity of the final product, namely the titanium oxide nanotube array, widen the absorption range of the titanium oxide nanotube array in a visible light region, improve the photoelectric conversion efficiency of the titanium oxide nanotube array and realize industrialized mass production, and has wide potential application prospect in the fields of degradation and nontoxic treatment of toxic and harmful pollutant, sewage purification and so on.

The invention provides a grease composition for foods soft sandwich and a preparation method thereof, and specifically provides a grease composition which uses specific content of fully hydrogenated vegetable oil as a seed crystal and can be simultaneously suitable to be used in winter and summer, the grease composition not only can solve the problem that grease is too hard and brittle in winter, and solve the problem of too much fluidity of the grease in summer caused by melting of the grease. The grease composition is characterized by comprising at least one grease selected from the group consisting of A, B and C and grease D, wherein the A is palm oil with the iodine value greater than or equal to 50, the proportion of A is 0-80%; the B is palm oil with the iodine value greater than or equal to 30 and less than 50, the proportion of B is 0-80%; the C is a non palm oil edible oil with the proportion of 0-80%; the D is the fully hydrogenated vegetable oil with the proportion of 0.1 to 20%.

The invention belongs to the technical field of photocatalyst materials, particularly relates to a preparation method of Mn doped lanthanum titanate photocatalyst fluorescent powder and an application. The chemical formula of the photocatalyst fluorescent powder is MnxLa (2-x) TiO5-0.5x, wherein 0.01<=x<=0.4. The preparation method includes the steps: firstly preparing lanthanum titanate gel, doping manganese ions, and synthesizing corresponding powder at the lower temperature by the aid of a self-propagating combustion method; determining that the power has optimal photocatalytic performance when Mn doping amount is 10%, and the power has highest luminescence property when Mn doping amount is 3% according to photocatalytic effect and luminescent intensity. The preparation method is simple in process, easy to operate and low in calcination temperature, conditions are mild and easy to control, prepared samples are high in purity and yield, and the fluorescent powder is a novel rare earth composite material with photocatalysis and fluorescence performances.

The invention discloses a preparation method of high-conductivity polyaniline by using hydrochloric acid doped cellulose as a template. In the method, based on the conventional preparation method of the hydrochloric acid doped polyaniline, the cellulose is introduced as the template, so that the prepared polyaniline is relatively high in conductivity, and the probability of using the polyaniline as a conducting medium is increased. The method provided by the invention is simple and easy to control in the technical process, and is relatively lower in cost.

The invention discloses a method for producing magnesia carbon bricks for a refining ladle lining by using waste magnesia carbon bricks. Ingredients include 62 parts of waste magnesia carbon bricks, 8parts of graphite, 2 parts of high temperature asphalt powder, 30 parts of fused magnesium and 3.0-3.2% of binder. The method includes immersing the waste bricks in water for 30 days, drying, crushing and sieving; mixing granules into a mixing mill for uniform mixing, adding the binder and powder for mixing for 30-40 minutes and rolling out; pressing the rolled material into blanks and calciningat low temperature for 10 hours. The waste magnesia carbon bricks are used as the main material and utilized to reduce resource waste, the manufacturing cost of products is also greatly reduced, the problem of disposal of waste materials is solved, the harm to the environment caused by the waste refractory materials is reduced, and the method is more environmentally friendly. Compared with the existing magnesia carbon bricks, the manufactured magnesia carbon bricks have comparable or improved performance indexes. When the manufactured magnesia carbon bricks are used in steelmaking furnaces orrefining ladles, the service life is not reduced, but the service life of the equipment is prolonged.

The invention relates to an oxygen-free copper strip horizontal electromagnetic casting device and belongs to oxygen-free copper strip production and processing matched equipment. The oxygen-free copper strip horizontal electromagnetic casting device comprises a crystallizer shell, a medium-frequency power supply, an induction coil, an electromagnetic oscillator, a shielding cover, a cooling water tank, a bottom die and a pouring mechanism; the pouring mechanism consists of a tundish and a pouring gate plug; the tundish is arranged on the upper part of the crystallizer shell; the bottom of the crystallizer shell is provided with a pouring gate; the pouring gate plug is arranged in the pouring gate; the tundish is communicated with the upper part of the crystallizer shell through the pouring gate; the upper part of the crystallizer shell is provided with the induction coil; the electromagnetic oscillator is connected with the induction coil; the induction coil is connected with the medium-frequency power supply; the induction coil is formed by winding pure copper of which the section is rectangular; the circulating cooling water is filled in the hollow part of the induction coil for the primary cooling; a cooling water box and a shower pipe are arranged on the lower part of the crystallizer shell, and spray water to cool the crystallized stripped copper blank for the secondary cooling; and the bottom of the crystallizer shell is provided with the bottom die.