13results about How to "Highly corrosive" patented technology

The invention discloses a dexterous hand force tactile sensor structure, which belongs to the technical field of tactile perception of robot dexterous hands, and comprises a first force arm, a second force arm, a contact slide rail and a fiber grating sensor, distances between hinge points of the first force arm and the second force arm and same-direction ends of the first force arm and the second force arm are equal; one side of the first force arm and one side of the second force arm are slidably connected with the contact sliding rail and correspondingly connected with the two ends of the elastic element. The fiber grating sensor is connected with the other sides of the first force arm and the second force arm; according to the invention, the fiber grating is used as a core sensitive element, and the two ends of the fiber grating sensor are synchronously triggered by matching the two force arms which are arranged in a crossed manner with the contact slide rail, so that the problems of large size, poor durability, easy interference, poor precision and the like of a traditional electrical sensor in dexterous hand application are solved.

The invention discloses a high-hardness corrosion-resistant iron-based amorphous alloy and a preparation method thereof, and belongs to the technical field of amorphous alloy materials. The iron-based amorphous alloy comprises the following components in percentage by mass: 20%-24% of Cr, 3%-7% of Mo, 3.6%-4.0% of B, 0.3%-0.7% of C, 1.0%-1.4% of Si, 1%-5% of Al, 1%-3% of Nb and the balance of Fe. The corrosion resistance is enhanced through the synergistic effect of Mo and Cr; b is a core amorphous forming element; c is used as a metalloid small atom, so that the amorphous forming ability of an alloy system is improved; si and B synergistically improve the amorphous forming ability and participate in formation of a Si-O passivation film at the same time; al optimizes the flowability of the alloy melt; nb is used as a large atom to improve the atom mismatch degree of a system and improve the amorphous forming ability; by accurately regulating and controlling the mass ratio of Fe, Cr, Mo, B, C, Si, Al and Nb, collaborative optimization of amorphous forming ability, hardness, corrosion resistance and forming stability is realized, meanwhile, the preparation process is simplified, and the production cost is reduced.

The present application relates to the technical field of organic synthesis, in particular to a method for synthesizing 2,2'-dithiodi[N-butyl-benzamide] in water phase with ethyl acetate as additive. Sodium iodide and hydroiodic acid are used as key additives to synthesize 2,2'-dithiodi[N-butyl-benzamide], which has certain safety hazards. In view of the above problems, the present application provides a method for synthesizing 2,2'-dithiodi[N-butyl-benzamide] in water phase with ethyl acetate as additive, which is to use 2-butyl-1,2-benzisothiazoline-3-ketone as starting reaction material, sodium sulfide as reducing agent, and ethyl acetate as key additive to synthesize 2,2'-dithiodi[N-butyl-benzamide] in water under room temperature and closed condition. The method of the present application completely avoids the use of strong acid such as hydroiodic acid and sodium iodide. Moreover, the raw materials used are all conventional chemicals, the reaction system is mild, the operation process is safe and reliable, and it is suitable for large-scale production.

The application discloses a glass frit for a single-crystal silicon solar cell front paste, a paste, and a single-crystal silicon solar cell. The glass frit comprises 1-30 mol% of lithium oxide, 5-40 mol% of bismuth oxide, 5-40 mol% of lead oxide, 1-40 mol% of silicon oxide, and X, wherein X is any one or a mixture of several of copper oxide, cesium oxide, rubidium oxide, sodium oxide, potassium oxide, aluminum oxide, magnesium oxide, strontium oxide, tin oxide, zinc oxide, or tungsten oxide, and the molar content of any one of the oxides in X is 1-10 mol%, and the content of X is not more than 50 mol%. The conductive paste prepared by using the glass frit contains a lead-bismuth-silicon oxide glass system, the system has enhanced resistance to acetic acid attenuation, ensures a sintering window at a high-temperature fast-firing sintering temperature, and X has strong corrosiveness, so that a lower contact area can be obtained. The conductive paste has high resistance to acetic acid in a wide sintering window.

The present application relates to an array electrode intelligent sensing system for tunnel gushing water monitoring and a method thereof. The system comprises a flexible sensing array implanted inside or on the surface of a tunnel lining structure, an intelligent acquisition node and a data analysis platform. The flexible sensing array is composed of multiple composite sensing units arranged in a predetermined topological structure, each unit integrating a main electrode for measuring resistivity / potential, a temperature sensor for measuring temperature and a flexible strain sensor for measuring deformation; the intelligent acquisition node connects the sensing array to synchronously acquire resistivity, temperature and strain data in multiple channels, and preliminarily processes and extracts features from the original data; the data analysis platform receives data from multiple nodes, and through a multi-parameter spatio-temporal fusion analysis model, realizes the collaborative intelligent analysis from "water-bearing state perception" to "structure deterioration evaluation" to "gushing water risk early warning". The present application realizes the fine, three-dimensional and real-time monitoring of the incubation process of tunnel water disasters.

The utility model relates to the field of tail gas treatment, and discloses a tail gas condensation recovery treatment device which comprises a primary condensation device, a secondary condensation device, a spray tower, a liquid storage tank, a water pump and a compressor, the secondary condensation device is communicated with the primary condensation device and the spray tower through pipelines, and the compressor is communicated with the secondary condensation device. The spray tower is communicated with the liquid storage tank through a water pump, and an air leakage detection device is further arranged on the secondary condensing device. The tail gas recycling device has the following advantages and effects that methanol and hydrogen chloride in tail gas are recycled by utilizing the primary condensing device and the secondary condensing device, residual hydrogen chloride gas in the tail gas enters the spray tower along the pipeline, and then liquid in the liquid storage tank is pumped by the water pump to react with the residual hydrogen chloride in the tail gas; the tail gas grading treatment is realized, hydrogen chloride and methanol in the tail gas can be well recovered, and the pollution of the tail gas to the environment is reduced.

The application discloses a preparation method of silica nano-aerogel heat-insulating paper, which comprises the following steps: (1) covering a permeable membrane interlayer on the surface of each fiber paper; (2) preparing a silica aerogel prepolymer mixed solution; (3) compounding the silica aerogel prepolymer mixed solution with the fiber paper to obtain wet silica aerogel paper; and (4) performing solvent replacement, hydrophobic modification and drying on the wet silica aerogel paper. The aerogel paper is prepared by covering the permeable membrane interlayer on the surface of the fiber paper and applying gravity in the gel process, so that the problems of the brittleness of the aerogel itself, the low strength of the fiber material itself, the damage of the prepared ultra-thin aerogel paper (less than or equal to 0.3 mm) and the like are solved, the gel absorption amount of the fiber paper is effectively controlled, and the flatness, thickness and thickness size deviation of the aerogel paper are ensured; and the prepared silica nano-aerogel heat-insulating paper is flat in appearance and free of defects such as wrinkles, holes and cracks which affect use.

The invention discloses an automatic gas cut-off device and method for diaphragm pump leakage and a diaphragm pump, and relates to the technical field of diaphragm pumps, and the automatic gas cut-off device comprises a pneumatic monitoring assembly, a mechanical logic valve group and a gas source cut-off mechanism; the mechanical logic valve group is arranged on an air source air inlet pipe of the diaphragm pump, and the air source cut-off mechanism is arranged at the output end of the mechanical logic valve group; the pneumatic monitoring assembly comprises a diaphragm differential pressure mechanical sensor in the diaphragm pump body, a flow driving swing plate arranged in a material outlet pipe of the diaphragm pump and a leakage triggering floating ball valve arranged on an air source exhaust pipe of the diaphragm pump. The mechanical logic valve set is a three-input AND gate valve, and the diaphragm pressure difference mechanical sensor, the flow driving swing plate and the leakage triggering float ball valve are in signal connection with the three input ends of the three-input AND gate valve respectively to control opening and closing of the air source cut-off mechanism. The design is reasonable, a pure pneumatic multi-parameter fusion monitoring structure is adopted, and diaphragm state monitoring is achieved through four kinds of mechanical pneumatic sensors including pressure difference, flow, leakage and temperature.

A kind of Mollier chart-based temperature and humidity equivalent relationship construction method, comprising the following steps: collecting the environmental data of target area, correcting the air temperature and relative humidity on metal surface state, obtaining the metal surface temperature and metal surface relative humidity corresponding to metal corrosion interface, using metal surface temperature and metal surface relative humidity as Mollier chart calculation input, establishing target area Mollier chart enthalpy database, point-by-point judging rainfall information, condensation information and metal surface relative humidity corresponding to multiple sampling times, then respectively accumulating statistics on the wet air enthalpy in multiple state sets, obtaining total annual enthalpy, and determining effective corrosion enthalpy, using pollutant acceleration coefficient to correct, determining the temperature and humidity equivalent relationship between natural environment and indoor equivalent environment, with the advantages of clear equivalent basis, strong regional adaptability, quantifiable test parameters, high corrosion correlation and compressible evaluation period.

This application relates to the field of vehicle technology and aims to solve the technical problem that the protective film layer of some known vehicle components is difficult to simultaneously improve sealing performance, acid and alkali resistance, and reduce processing costs. It provides a surface treatment method, processing method, vehicle component, and vehicle. The surface treatment method includes: providing a substrate; forming an electrophoretic paint on the surface of the substrate through a first electrophoretic process to obtain an electrophoretic paint material layer, wherein the electrophoretic paint material includes a resin matrix and a conductive material; the conductive material includes conductive carbon black, graphene, and graphite, wherein the mass percentage of the conductive material ranges from 5.5% to 11%, and the mass percentage of the resin matrix ranges from 15% to 20%; and thermosetting the electrophoretic paint material layer to obtain a conductive film layer. The beneficial effects of this application are improved sealing performance and acid and alkali resistance of vehicle components, and reduced processing costs.

This invention discloses a double-layer polyurethane-acrylic superhydrophobic coating and its preparation method, relating to the field of hydrophobic materials technology. The method includes: preparing a polyurethane-acrylic-2 mixed solution; screen-printing the polyurethane-acrylic-2 mixed solution onto a substrate, followed by xenon lamp curing to obtain a polyurethane-acrylic-2 bonding layer; modifying P25 nano-titanium dioxide particles to obtain modified P25 nano-titanium dioxide particles; preparing a polyurethane-acrylic-6 superhydrophobic coating reagent; and screen-printing the polyurethane-acrylic-6 superhydrophobic coating reagent onto the polyurethane-acrylic-2 bonding layer, followed by xenon lamp curing to obtain a double-layer polyurethane-acrylic superhydrophobic coating. The superhydrophobic coating prepared by this invention exhibits strong adhesion, durability, and corrosion resistance, making it suitable for large-scale production and application in the coatings industry.

The utility model belongs to the technical field of cables for coal mining machines, and particularly relates to a cable with a protection mechanism, which comprises a buffer layer, a plurality of insulating layers arranged in the buffer layer, thin-wall seamless stainless steel tubes arranged in the insulating layers, and silicon-based fiber paste filled in the thin-wall seamless stainless steel tubes. Through the arrangement of the protective layer, the compression-resistant layer and the elastic layer, the cable can bear large physical pressure, pulling force and impact, it is ensured that the cable is not prone to being damaged in the falling and impacting process of coal gangue or large coal briquettes, the inner layer of the cable can be effectively protected when the cable is subjected to external force, and the cable can be effectively protected against external damage; the cable has good elasticity and can keep long-time performance in a high-strength friction environment, and the surface of the cable is prevented from being abraded; and the plurality of steel wires can wrap the shielding layer to form a layer of metal cover, so that coal gangue or large coal briquettes on the working surface of the coal mining machine can be more effectively prevented from falling, punching and smashing, and the cable core is prevented from being damaged by external mechanical force in the use process.

The application discloses a buckle type square tube for a semiconductor frame and a production process thereof, relates to the technical field of buckle type square tubes, and discloses a buckle type square tube for a semiconductor frame and a production process thereof, which is aimed at the problems of easy corrosion and abrasion of Q345 square tubes in a semiconductor workshop, corrosion dust pollution of components and devices, adopts a base material step-by-step polishing pretreatment, an aluminate system plasma electrolytic oxidation to prepare a ceramic bottom layer, and a composite process of a multiphase joint surface layer prepared through hydrothermal and liquid phase deposition, and has excellent wear resistance and all-weather corrosion resistance. The application solves the defects of weak bonding force of single surface treatment, and the incapability of corrosion resistance and wear resistance to cooperate, is suitable for complex working conditions of the semiconductor frame, has no dust pollution, and greatly improves the service life.