37results about How to "Little effect on properties" patented technology

The invention provides a fiber grating cable tension transducer with a temperature self-compensation function, belonging to the field of transducer technologies. The transducer provided by the invention is characterized by comprising a metal baseplate, a clamping piece, a micro fiber grating strain transducer and a cable component of fiber transmission. The measuring sensitivity of the transducer can be adjusted by changing sizes of elements of the transducer in accordance with actual requirements, thus being suitable for monitoring cable tension of the different cables in real time. The fiber grating cable tension transducer can measure the cable tension of the cables indirectly by measuring an anchor head structure and utilize the properties of the fiber grating to improve the cable tension sensitivity coefficients of the transducer, and is not influenced by structural materials and external environments. The fiber grating cable tension transducer can eliminate influences of eccentric forces on measuring values, realize the temperature self-compensation and overcome the defects that a traditional electric transducer is subjected to electromagnetic interference easily and is poor in long-term stability, and has the advantages of high accuracy, light weight, low influences on the properties of the structure and the like.

The invention relates to a preparation method of spherical particles of a thermoplastic plastic. The method comprises the following steps: S1, mixing thermoplastic plastic powder, a deformation assistant and a surface protection stabilizer to obtain a raw material mixture; S2, adding the raw material mixture into a dispersing medium and heating, then, separating the heated mixture, washing the filter residue and drying, and finally crushing the filter residue and sieving to obtain the spherical particles of a thermoplastic plastic. The particles prepared by the method provided by the invention are better in degree of sphericity, and have the characteristics of wide application range and no limit by types of plastic (polymers). Appropriate deformation assistants, surface protection stabilizers and operating conditions can be found for nearly all thermoplastic polymers to obtain the spherical particles. The spherical particles have less influence on property of the material such as molecular weight, component distribution and melt fluidity.

The invention discloses a nano zirconia alcohol slurry and a preparation method thereof. The nano zirconia alcohol slurry comprises, by weight, 1-60 parts of nanometer level ZrO2 powder, 0.05-10 parts of dispersant and 30-99 parts of solvent. The preparation method is as below: the dispersant is added and dissolved in the organic solvent; then the nanometer level ZrO2 powder is added in the mixture and dispersed by a high speed bowl mill for 0.2-10 h, so as to obtain the oil slurry. The technology of the invention is simple, has a short processing time, easily controlled process and high application value. The nano zirconia slurry prepared by the invention is a highly decentralized, uniformized and stabilized slurry, can be widely applied to fields of high strength and high-toughness wear resistant product, functional ceramic, structural ceramic, electric device and refractory material, etc.

The invention discloses a dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags, and belongs to the field of dressing and smelting. For solving the environmental problems caused by the difficult mineral dressing and recycling of lead sulfate and zinc sulfate containing materials and the stockpiling, percolation and leaching and the like of slag charges, the dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags comprises the following steps: 1) drying: carrying out heating and drying treatment on slag charges; 2) roasting: adding a reducing agent into the dried slag charges so as to carry out reduction roasting; 3) after the roasting is completed, slowly cooling the slag charges, and after the temperature of the slag changes is reduced to below 200 DEG C, carrying out water quenching on the slag charges so as to obtain water-quenched slags; and 4) grinding and floatation: after the water-quenched slags are subjected to ore grinding and grading, taking a material with the particle size of less than 75 mu m and carrying out flotation separation on the material so as to obtain a lead concentrate and a zinc concentrate. According to the invention, the lead content of the obtained lead concentrate is more than 55%, and the recovery rate is more than 80%, the zinc content of the zinc concentrate is more than 35%, and the recovery rate is more than 75%; and the method disclosed by the invention has the characteristics of low treatment cost, no heavy metal pollution, and high lead and zinc metal recovery rates.

The invention provides an antimicrobial polysulphone flat ultrafiltration membrane, relates to an antimicrobial polysulphone flat ultrafiltration membrane and a preparation method thereof, and aims to solve the problem that in the prior art, the nanomaterial is hard to be dispersed uniformly and needs to be pretreated. The antimicrobial polysulphone flat ultrafiltration membrane is a silver nanoparticle-polysulphone composite flat ultrafiltration membrane which is prepared from polysulphone and silver nanoparticles by immersion precipitated phase conversion process, polysulphone is used as a film-forming material, and silver nanoparticles are prepared by liquid phase reduction of silver nitrate and used as an antimicrobial additive. The mass percentage of polysulphone in the mixture is 8% to 26%, silver nitrate accounts for 0.1% to 1% of the total mass, the reducing agent accounts for 5% to 20% of the total mass, the pore forming agent accounts for 3% to 10% of the total mass, and the solvents are in the balance. The ultrafiltration membrane plays a role of killing microorganisms and sterilizing in addition to filtration, the membrane surface is not contaminated, and the effluent quality is improved.

The invention discloses a making method of superparamagnetism starch, which comprises the following steps: allocating starch milk through starch and deionized water; adjusting pH value; adding soluble ferrous salt solution to adsorb once; filtering in the vacuum or separating centrifugally; removing water to obtain sediment; adding hydrogen peroxide solution to oxidize once; dehydrating; washing; obtaining starch product with water; repeating these steps to obtain magnified starch product with water; drying; obtaining the product.

The invention relates to the technical field of laser soldering, and discloses an automatic laser soldering machine. The automatic laser soldering machine comprises an operation table device and a tinsoldering device, the top of the operation table device is fixedly provided with the tin soldering device, and the operation table device comprises a tin soldering machine operation table; connectingbosses are fixedly arranged on the two sides of the soldering machine operation table, a switch is fixedly arranged on the front surface of the tin soldering machine operation table, and a pluralityof operation buttons are fixedly arranged on the left side and the right side of the adjusting knob. The automatic laser soldering machine has the advantages of being short in heating time, fast in heating speed and small in influence on the property of surrounding devices due to local heating. During laser soldering tin, only the part irradiated by the light spot is heated by the laser, the localtemperature rises is faster, so that the welding spot can be quickly made to reach the temperature of the welding requirement, due to the fact that the temperature rise is fast and the time is short,and the temperature rise of the surrounding area of the welding spot is limited, so that the influence on other elements is relatively small.

The invention discloses a wax-wrapped peroxide microcapsule and a preparation method thereof. According to the invention, a core material of the microcapsule is a peroxide, and the wall of the microcapsule is wax. The preparation method comprises the following steps: dissolving petroleum wax at a temperature of 50 to 90 DEG C by using a low molecule alcohol as a solvent, adding micro peroxide powder, controlling a stirring speed to be 3000 to 8000 r/min, carrying out cooling to a temperature of 25 to 30 DEG C, removing the solvent through vacuum filtration and carrying out blow drying with nitrogen so as to obtain the wax-wrapped peroxide microcapsule. The wax-wrapped peroxide microcapsule improves thermal stability of the peroxide, is convenient for storage and transportation, is especially applicable as a polymerization initiator and is beneficial for smoothness of reaction.

The invention discloses an intelligent chemical analysis system for distinguishing detection of a weak electrolyte sample and a method therefor. The intelligent chemical analysis system is characterized by comprising an embedded module, a potentiostat and a three-electrode sensor. The method comprises that the self-developed potentiostat combines with the embedded module; a two-step excitation acquisition method is adopted; through the first excitation acquisition process, solution resistance is automatically fitted and an electrical signal produced by the solution resistance is added to a secondary excitation signal; and through the combination of the second acquisition process, real-time Fourier transform and principal component analysis, an optimized weak electrolyte solution whole-distinguishing graph is obtained. The method has good detection effects, a wide application scope and low influence on solution properties.

The invention discloses a size determination method of a chemical substance complex dielectric constant measuring device and the measuring device. The method includes the following steps: S101, calculating the monotonicity of S parameters corresponding to materials inside cavities with different dimensions of cavity bodies to determine optimal size of a monotonicity curve change; S102, making a cavity body by using the cavity body corresponding to the optimal size of the monotonicity as a model; S103, connecting the cavity body with a vector network analyzer; S104, selecting a substance corresponding to a dielectric constant close to a minimum value in a dielectric constant real parameter set as a first substance, selecting a substance corresponding to a dielectric constant close to a maximum value as a second substance, and independently putting the first substance and the second substance into the formed cavity body to separately measure S parameters of the first substance and the second substance and compare the S parameters; and S105, if an error after the comparison is less than a predetermined value, regarding the cavity body as a cavity body with the optimal size.

The invention relates to a method for leaching and loading a drug solution by using a nanometer porous polylactic acid material. According to the method, a nanometer porous polylactic acid material is immersed in a drug solution to be loaded to render drugs enter nanometer holes and cracks of the inner surface of the micropores of the nanometer porous polylactic acid material, the drug loading of polylactic acid material carrier per unit volume is improved by using high specific surface area of microporous materials. Compared with the prior art, the nanometer porous polylactic acid material in the method has larger drug loading per unit volume, the drug is loaded without chemical treatment due to microporous physical absorption while the drug loading stability is high, the technology is simple, the processing conditions are mild, and the influence on the drug loading organism and the properties of the drug is small.

The invention provides a liquid level detection device and method and a dish washing machine. The liquid level detection device comprises a first circuit, an energy storage circuit and a control chip,wherein the first circuit comprises a first metal probe positioned at a first set height of a liquid container; the first metal probe is connected to a first power supply end through a first resistor, and is connected to a first output end through a second resistor; the energy storage circuit comprises a third metal probe located at the lowest position of the liquid container; the third metal probe is grounded through an energy storage capacitor; the control chip has a driving end for outputting a pulse voltage to the first power supply end and a first acquisition end for acquiring a probe signal through the first output end; and whether liquid exists at the first set height or not is judged through the probe signal. According to the design, the influence of liquid properties is relatively small, and earth interference signals are isolated, so that the interference of the environment to the liquid level detection can be effectively avoided, and the accuracy of the liquid level detection is improved. Compared with the prior art of Hall detection, proximity switch detection or the like, the device is simple in circuit, easy to implement and relatively low in cost.

The invention relates to a lithium ion battery electrolyte. The electrolyte comprises a lithium salt, a solvent and a first additive, wherein based on 100 parts by weight of the electrolyte, the content of the first additive is 1-10 parts by weight, the first additive contains a compound shown as a formula (I): CxF<2x+1>Oy-A-R, and the weight-average molecular weight of the compound is 2000-5000;x and y are integers, x is greater than or equal to 0 and less than or equal to 6, y is greater than or equal to 0 and less than or equal to 1, A is a perfluoropolyether group, and R is selected fromone or more of a partially-fluorinated or completely-fluorinated alkyl alcohol group, an alkyl amide group, an alkyl acyl group, an alkyl amine group, an alkenyl carboxylate group and a siloxane group. The lithium ion battery containing the electrolyte disclosed by the invention is good in safety performance, and other electrochemical properties of the lithium ion battery can be ensured to be stable.

The invention relates to the field of oily sludge treatment, in particular to a continuous desalination and dehydration method and device of oily sludge. The continuous desalination and dehydration method of the oily sludge comprises the following steps: (1) continuously heating the oily sludge under a closed condition to obtain a pressurized superheated material; (2) continuously feeding the pressurized superheated material to a pressure-reducing system to ensure that water being 60 percent by weight or less of the oily sludge is vaporized to obtain vaporized steam and a residual material; and (3) performing oil-water separation on the residual material to obtain purified oil at the upper layer and salty sewage at the lower layer. By adopting the method provided by the invention, the oilysludge can be continuously treated, and the oil-water separation time is short, the desalination and dehydration effect is good, and the desalination and dehydration effect is stable.

The invention relates to a cyclic utilization method of cutting fluid, in particular to a cyclic utilization method of cutting fluid containing copper and nickel, and aims to solve the technical problems of complex treatment process and high treatment cost of the existing cutting fluid. Copper ions and nickel ions in the cutting fluid form precipitates through the chemical agent sulfide and the organic sulfide polymer griddling agent, the turbidity degree of the cutting fluid is reduced, the copper ions, the nickel ions and the metal chips in the cutting fluid are removed, and the precipitatesare separated from the cutting fluid through membrane filtration; metal precipitates generated by the medicament are low in water content and high in metal content, and metal substances in the metalprecipitates are recycled; after membrane filtration, the cutting fluid can be clarified and transparent, the recovery rate of the cutting fluid is high, the average recovery rate is 96%, the influence on the properties of the cutting fluid is small, the reusability is achieved, the discharge amount and the use amount of the cutting fluid are reduced and the cost is reduced. The method is appliedto recovery of the cutting fluid.

The invention relates to a method for improving enzymolysis resistance of casein and reducing sensitization, which is used for cross-linking China-hemp seed protein and casein through transglutaminase, and specifically comprises the following steps: (1) preparing a mixed solution of casein and China-hemp seed protein; (2) adding transglutaminase into the mixed solution of the casein and the hemp seed protein, and carrying out cross-linking reaction to obtain a cross-linked casein solution; and (3) placing the cross-linked casein solution in an environment of 3-5 DEG C, and terminating cross-linking. Compared with the prior art, the method has the advantages that the process steps are simple, the novel food resource, namely the hemp seed protein, is fully utilized, the casein is replaced by the hemp seed protein, the sensitization of the casein is further reduced, the enzymolysis resistance of the casein is improved, and the delivery effect of the casein on sensitive substances in the fields of food and pharmacy is improved.

The invention relates to a preparation method for improving the fluidity of thermoplastic polymer powder, which uses thermoplastic polymer powder as a raw material and comprises the following steps: step 1: uniformly mixing a surface stabilizer and a surface treatment agent to obtain a liquid powder treatment agent; step 2 : mixing thermoplastic polymer powder and liquid powder treatment agent to obtain a liquid mixture containing powder; step 3: separating solid and liquid from the mixture obtained in step 2 and drying to obtain treated thermoplastic polymer powder. The method controls the spheroidization of the powder by adjusting the solubility parameter of the surface treatment agent and the treatment time, and improves the fluidity of the powder. The method has a wide range of applications, is not limited by polymer types, and can realize the treatment of high-temperature-resistant thermoplastic polymer materials. The prepared powder can be used in powder coatings, 3D printing, cosmetics, additives, medicine and other fields.

The invention relates to the field of sludge solidification detection, in particular to a sludge solidification in-situ test method. The method comprises the following steps: arranging piezoelectric solidified soil test points in parallel at multiple points of sludge in situ, distributing the piezoelectric solidified soil test points at equal intervals in the vertical depth, and connecting the test points with a data collector through conductive solidified soil. Each test point is composed of piezoelectric solidified soil, a super-elastic rubber film sleeve, a net-shaped mold, a plastic hose and conductive solidified soil. The invention provides a measuring point arrangement requirement for measuring a sludge solidification state of piezoelectric solidified soil; compared with a traditional arrangement scheme, the provided method has the advantages: the density of measuring points is higher, piezoelectric solidification states of different depths can be measured, and a testing scheme is provided for related research on sludge solidification in the future; the conductive solidified soil is prepared, and a new thought is provided for a soil body internal sensor arrangement method; the measurement sensor is piezoelectric solidified soil, and the influence on the property of an in-situ soil body is low; and compared with a traditional scheme, the measurement result is more accurate.