Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

331results about How to "Strong radiation resistance" patented technology

Underwater working robot

The invention discloses an underwater working robot which is characterized by mainly comprising a vehicle body module, a manipulator module or / and an underwater camera module, a functional component module and a control module, wherein the modules are completely isolated mechanically and electrically; the vehicle body module mainly comprises a six-wheel and six-drive sealing vehicle body, a vehicle body direct current servo motor, a vehicle body motor driver, a vehicle body underwater ultrasonic sensor, a vehicle body temperature pressure sensor, an underwater lighting lamp, a vehicle body waterproof plug, a vehicle body inflating valve and a vehicle body anti-radiation lead plate; the manipulator module mainly comprises a base, a waist part, a large arm, a small arm and a tail end executer; the base, the waist part, the large arm and the small arm are connected with one another through hollow joints; air is filled into a manipulator, and wires are arranged in the manipulator; the underwater camera module mainly comprises an underwater camera, an underwater camera lighting lamp and a bidimensional tripod; the functional component module mainly comprises a storage box, an underwater dust remover and an underwater cutter; and the control module mainly comprises a main control console and a hand-control box.
Owner:HEBEI UNIV OF TECH +1

Modified polyaspartic acid ester polyurea coating and preparation method thereof

The invention belongs to the technical field of coatings, and particularly relates to a modified polyaspartic acid ester polyurea coating and a preparation method thereof. The coating comprises a component A and a component B, and the component A and the component B are respectively prepared and independently stored. The component A comprises isocyanate and / or a polymer of isocyanate; and the component B is prepared from the following substances in parts by weight: 20 to 75 parts of organic silicon and epoxy dual-modified polyaspartic acid ester resin, 5 to 35 parts of a filler, 0.1 to 5 partsof a pigment, 0.5 to 10 parts of an auxiliary agent and 5 to 30 parts of a solvent. An organic silicon unit and an epoxy unit are introduced into a polyaspartic acid ester resin structure to obtain anovel polyurea coating with excellent low-temperature flexibility, bonding strength, weather resistance and mechanical properties, and the coating is simple in preparation method, good in controllability, low in cost, capable of being prepared in batches and suitable for industrial production.
Owner:SICHUAN JUNSHANG ACRYLIC MFG CO LTD

Thin film SOI thick grid oxygen power device with grid field plate

The invention belongs to the semi-conductor power device technical field. A SOI layer of the device is thinner (1to 2um); a grid oxide layer is thick (100 to 800nm); a grid field plate gets across a grid and extends above a drift region. An active expansion region positioned below the thick grid oxide layer and connected with a source region can be also arranged in the body of the device to assure the more effective formation of the whole device. The grid oxide layer of the invention is thicker, can bear high grid-source voltage and meet the need of a level displacement circuit; the SIO layer is thinner, can decrease the parasitic effect of the device and reduce consumption; through adding the grid field plate striding over the grid on the surface of the power device, the depletion of the drift region can be increased, the electric field peak value on the silicon surface at the tail end of the grid is decreased, the breakdown characteristic of the device is improved, further more the concentration of the drift region is helped to improve, and the on-state resistance of the device is decreased. The invention has the advantages of low parasitic effect, fast speed, low power consumption, strong radiation-resistant ability and so on, and is compatible with the standard process. By adopting the invention, various high-voltage, high-speed and low conducting loss devices of excellent performance can be produced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

A kind of isolated transmission method and circuit of switching power supply

The invention discloses an isolation transmission method of a switching power supply and a circuit thereof. Error signals sampled by a sampling circuit are sequentially output through an isolation circuit and a rectification filter circuit; the isolation circuit is composed of an isolation transformer, a driving triode and a pulse signal source, and the pulse The signal source outputs a pulse signal with a fixed frequency and pulse width, and the pulse signal is mixed with the error signal output by the sampling circuit through the driving triode in the primary winding of the isolation transformer, and the mixed signal is output from the secondary winding of the isolation transformer to the rectification filter circuit, It is rectified and filtered by a rectifying and filtering circuit to output a DC level signal whose amplitude is controlled by an error signal; the isolated transmission method and its circuit of the present invention have high transmission ratio for transmitting small signals, are less affected by temperature changes, and are resistant to radiation With the characteristics of strong capability, good stability and high derating, it is suitable for applications in high and harsh environments such as aerospace, military industry, and communications.
Owner:MORNSUN GUANGZHOU SCI & TECH

Dredging synthetic platform management system of trail suction dredger based on redundancy network

The invention relates to an integrated platform management system for the dredging of a trailing suction hopper dredger, in particular to an integrated platform management system based on a redundant network. The system comprises network switch, a server, a plurality of workstations, a PLC and a gateway which are respectively connected with a bottom ring network, and a top ring network; the PLC is used for realizing the control on the input and the output of field-working devices of a dredger, the gateway is used for realizing the conversion between the third protocol and the TCP / IP protocol, the PLC and the gateway are respectively connected with the bottom ring network through the network switch; the workstations for managing and monitoring data are connected with the top ring network through the network switch; and the server is connected with the bottom ring network and the top ring network through network switches arranged on the bottom ring net and the top ring net. The invention realizes the full sharing of the whole ship information resource and improves the system reliability.
Owner:ZHENJIANG YIHUA SYST INTEGRATION +2

Fig natural face-nourishing and weight-losing cold herbal tea and preparation method thereof

The invention relates to fig natural face-nourishing and weight-reducing cold herbal tea and a preparation method thereof, belonging to face-nourishing and weight-reducing cold herbal tea and a preparation method thereof. The cold herbal tea is prepared from fig, tea, Chinese dates, yam, vine roots, poria extract, hawthorn, alginate polysaccharide, soybean isoflavone, lotus leaf flavone, gypenosides, curcumin and white granulated sugar through the steps of crushing, extraction, preparation and the like. The cold herbal tea has the functions of beautifying the features, nourishing the face, reducing fat, losing weight, augmenting the breasts and getting sexy; and the cold herbal tea has the peculiar fruit tea taste of fig and is sour and sweet.
Owner:WEIHAI HUAYAO BENCAO BIOTECH

Thin layer SOILIGBT device

The invention relates to a folium SOILIGBT device which belongs to the technical field of semiconductor power device. The thickness of SOI layer of the device is 1 mu m to 2 mu m; a cavity barrier layer is arranged between a body zone and a drift zone; the cavity is blocked in the drift zone to the utmost extent; and then the cavity consistence near the side of a cathode in the drift zone is increased; and conduction losses of the device are reduced. A P type depletion zone can also be added near the cavity barrier layer to assist to deplete the N type cavity barrier layer, and so drift zone depletion is strengthened when the device bears a high pressure, and breakdown characteristics of the device are improved. The folium SOILIGBT device has the advantages of small parasitics, fast speed, low power consumption, strong anti-radiation performance, and is compatible with the standard process. An LIGBT device having good performance, high pressure, high speed and low conduction losses can be made when the folium SOILIGBT device is adopted.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Integrated power device on silicon on insulator (SOI) layer for negative supply voltage

The invention provides an integrated power device on a silicon on insulator (SOI) layer for negative supply voltage, belonging to the field of semiconductor power devices. The integrated power device on the SOI layer for the negative supply voltage is characterized in that the SOI layer is integrated with at least two or three high-voltage devices of an n-type lateral insulated gate bipolar transistor (nLIGBT), a p-type laterally diffused metal oxide semiconductor (pLDMOS) and an n-type laterally diffused metal oxide semiconductor (nLDMOS), and also can be integrated with a low-voltage metal oxide semiconductor (MOS) device; buried oxide layers and dielectrically isolated areas connected with the buried oxide layer are used to realize the complete isolation among the different devices; a conventional local oxidation of silicon (LOCOS) technology or a shallow trench isolation technology is adopted for realizing the dielectrically isolated area; the SOI layer is 0.5-3mu m in thickness; and the dielectric electric-field strength of the thick gate oxide layer of the high-voltage nLIGBT and nLDMOS devices is less than 5*106V / cm so as to meet the requirements of the high-voltage integrated circuit of the negative supply voltage for high voltage resistance between the grid electrodes and source electrodes of the devices. The integrated power device on a SOI layer for the negative supply voltage has the advantages of small parasitic effect, fast speed, low power consumption, strong irradiation resistance and the like, realizes compatibility of the high-voltage devices with the low-voltage devices, and meets the requirements of the working environment of the negative supply voltage. The integrated power device on a SOI layer for the negative supply voltage is used to manufacture a plurality of high-voltage, high-speed and low conducting-loss power devices with good performances, and is used for the high-voltage application of the negative supply voltage.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Polysulfonamide fiber-containing dry mica tape and application thereof

The invention discloses a polysulfonamide fiber-containing dry mica tape, which comprises a mica layer, a bonding agent layer and a reinforcing material layer in sequence from the top to the bottom, wherein the mica layer consists of mica powder, polyphenyl sulfone p-phenylene formamide fiber and a bonding agent; the content of the polyphenyl sulfone p-phenylene formamide fiber accounts for 2-50 percent by weight of total mass of the mica layer; and the content of the bonding agent accounts for 2-25 percent by weight of the total mass of the mica tape. The invention has the remarkable technical advantages that: 1, the dry mica tape has high permeability; in the presence of the polysulfonamide fiber, a relatively loose structure and gaps with certain continuity can be formed in an insulating layer, so that the permeability of the dry mica tape can be improved, and impregnation of impregnated resin is better facilitated; 2, heat-resisting organic fiber in a certain proportion is added into the mica layer, namely, the mechanical strength of the mica layer is improved; and 3, heat-resisting organic fiber used in the mica tape is superior to Nomex fiber on the aspects of heat resistance, impregnating performance, radiance resistance, high-temperature size stability, flame retardance and chemical stability, has excellent electrical insulating performance simultaneously, and is more suitable for manufacturing a mica type with a motor in an insulating way than Nomex fiber.
Owner:上海同立电工材料有限公司

Novel method for preserving and processing sea cuumber

An antistaling method for preparing the sea cucumber product with less loss of the nutrients including vitamins, amino acids, trace elements, collagen, saponin, mucopolyose, etc and the medical components includes such steps as providing fresh sea cucumber, removing viscera, washing, loading in bag, sealing, high-pressure treating under 300-800 MPa for 3-30 min, and conventional antistaling treating.
Owner:天津华泰森淼生物工程技术股份有限公司

Terminated poly(ether-ether-ketone), and preparation method thereof

The invention relates to 2,5-di-tert-butyl-terminated poly(ether-ether-ketone) (PEEK), and a preparation method thereof. The end-capped poly(ether-ether-ketone) provided by the invention has advantages of easily controllable molecular weight, high heat resistance, good chemical stability, radiation resistance, good toughness, and the like.
Owner:吴疆

Control rod rod position measuring system based on electric vortex sensor

The system includes control rod assembly, chain wheel-link belt, current vortex sensor, precision lead screw-nut assembly and body to be measured. The said precision lead screw-nut assembly includes precision lead screw, nut and support. Precision lead screw is connected to chain wheel, and the body to be measured is fixed on the nut. The current vortex sensor includes probe of sensor, signal transmission cable and preamplifier. Sealed penetration piece welded to pressure borderline of a loop is setup in middle of the signal transmission cable. Probe of sensor fixed on the said support is corresponding to the body to be measured. The advantages are high measurement accuracy, fast speed, stable operation and easy of maintenance.
Owner:TSINGHUA UNIV

Carboxymethyl mycose moisture absorption humectant and preparing method thereof

The invention relates to the domestic chemical field and the pharmaceutical industry, in particular to a moisture absorption humectant of carboxymethyl mycose and a method for preparing the same. The moisture absorption humectant of carboxymethyl mycose uses carboxymethyl mycose as the moisture absorption humectant. The preparation method is as follows: according to the mol ratio of between 1:4 and 6, mycose undergoing swelling by the alkali isopropyl alcohol solution and chloroacetic acid are mixed and reacted in the excessive alkali isopropyl alcohol solution at a temperature of between 30 and 60 DEG C for 2 to 5h, and the mixture is subjected to suction filtering and drying so as to obtain the moisture absorption humectant of carboxymethyl mycose. In the invention, carboxymethyl mycose is obtained by the effective synthetic method, and the production cost is only slightly increased, but the moisture-absorption and moisture-retention performances are obviously improved; as a highly efficient moisture-absorption and moisture-retention factor, carboxymethyl mycose obtained by the method of the invention is hopeful to replace hyaluronic acid to be used in cosmetics.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI +1

Heparitin sulfate from rat tissue and production thereof

InactiveCN1817911ARich varietySpecific compositionRibonucleaseProteinase activity
Heparan sulfate originating from rat tissue and its production are disclosed. The procedures is carried out by homogenizing rat tissue, degreasing, hydrolyzing by protease, hydrolyzing by alkali, deproteinizing, centrifugalizing, taking out purified liquor, dialyzing, depositing dialyzate by cetylpyridinium chloride, hydrolyzing by RNase and chondroitinase ABC, and separating by ionic exchanging column. It has special raw material, better product anticoagulant and antiradiation performances, and various Heparan sulfate. It can be used for research on medicinal molecular model structure and protein interaction. I
Owner:OCEAN UNIV OF CHINA

Underwater photographic system

An underwater shooting system comprises shooting body including video camera , horizontal rotating shaft , horizontal motor and its gear reduction set , vertical rotating shaft , vertical motor and its gear reduction set , motive seal and static seal ; and main controller including video distribution module , control and regulation circuit of video camera , switching circuit of control right , regulation circuit of lighting source and rotary table motor . It can provide observation on multi-direction and large visual field object as well as can shoot out picture with high resolution ratio .
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

Phase-regulated cable for spaceflight, and method for preparing same

The invention discloses a phase-regulated cable for spaceflights and a method for preparing the same. The phase-regulated cable for spaceflights is characterized by comprising an inner conductor, an insulation layer, outer conductors and sheaths which are all coaxially and are sequentially arranged from inside to outside. The method for preparing the phase-regulated cable for spaceflights comprises the following steps of forming the inner conductor by drawing or twisting a single or multiple silver-plated copper wires; forming the insulation layer by using a lapping production line to manufacture a polytetrafluoroethylene micro-porous thin film and then pressing the thin film; forming an outer conductor I by using the lapping production line to lap a silver-plated copper flat belt and then rolling the flat belt with round rollers; forming an outer conductor II by lapping an aluminum foil and a polyimide composite belt; forming an outer conductor II by braiding copper-plated round copper wires; and forming a sheath I and a sheath II by using the lapping production line to lap a polyimide duplex polytetrafluoroethylene thin film and a polytetrafluoroethylene sealing tape; and thus obtaining a finished product of a phase-regulated cable. The phase-regulated cable for spaceflights small in laying bending radius, phase-regulated, low in loss and low in standing wave, and has strong resistance to high and low temperatures and radiation, improved anti-interference performance and good flame resistance.
Owner:江苏通光电子线缆股份有限公司

Implementation method of mineral insulated coaxial cable

The invention relates to the technical field of special cables and provides an implementation method of a mineral insulated coaxial cable which can realize signal communication transfer in an extreme weather condition; and the dielectric property and the high-temperature insulation performance of the cable can be comprehensively optimized to well satisfy the using requirements of the signal communication coaxial cable. The mineral insulated coaxial cable is characterized by comprising an inner conductor, an insulating medium layer and a three-layer composite shield body from inside to outside; the insulating medium layer is made of a mixture of aluminium oxide and silicon oxide; the three-layer composite shield body is formed by sequentially compositing an inner shield body, a middle shield body and an outer shield body, each layer can be made of copper pipes, iron pipes, stainless steel pipes or other high-temperature alloy pipes, and the adjacent layers can not be made of the same material. Compared with the conventional organic matter insulated cable, the three-layer composite shield mineral insulated coaxial cable has relatively long service life and relatively high reliability. Compared with a magnesium oxide mineral insulated cable, the three-layer composite shield mineral insulated coaxial cable has a relatively wide application field.
Owner:CHINA ELECTRONICS TECH GRP NO 23 RES INST

Bridgman method growth process of cesium iodide and thallium-doped cesium iodide monocrystalline

The present invention provides a bridgman method growth process of pure cesium iodide and thallium-doped cesium iodide monocrystalline. The bridgman method growth process comprises the following steps: firstly performing hydroxyl and drying pretreatment for eliminating OH-, absorbed water and crystal water wherein; after drying, filling the raw material in a quartz crucible which is coated by a carbon film, and performing vacuum-pumping sealing; and realizing crystal growth in a descending furnace which is internally provided with a high-temperature area, a medium-temperature area and a low-temperature area, wherein a descending speed is 1.5-3.0mm / h and a temperature gradient of a crystal growth interface is 30+ / -2 DEG C / cm. The bridgman method growth process of the pure cesium iodide and thallium-doped cesium iodide monocrystalline has the following characteristics: simple structure of a growth furnace which is used therein, high convenience in operation, adjustable gradient of the temperature in the hearth, capability of growing a plurality of pieces of crystal at a plurality of equivalent stations in the furnace, reduced crystal cost, high suitability for large-scale production, etc. The cesium iodide crystal which is grown according to the invention is suitable for the application fields such as safety inspection and nuclear medicine imaging.
Owner:上海御光新材料科技股份有限公司

Underwater fuel conveying trolley and tipping-over device for pressurized water reactor

The invention relates to an underwater fuel conveying system for a pressurized water reactor, in particular to an underwater fuel conveying trolley and tipping-over device for a pressurized water reactor. The underwater fuel conveying trolley comprises a trolley capable of running stably inside a fuel conveying pipeline, the trolley is provided with a fuel basket capable of rotating along a fixedshaft alternatively in a horizontal direction and a vertical direction, two sides of the frame of the trolley are provided with steel wire rope leading sheaves, the fuel basket is provided with tipping-over leading sheaves capable of swinging around a pivot, a tipping-over steel wire rope rounds the tipping-over leading sheaves on the fuel basket and the tipping-over leading sheaves on two sides of the trolley, one end of each tipping-over steel wire rope is connected with a winding drum, and the other end of each tipping-over steel wire rope is connected with a counter weight. The underwaterfuel conveying trolley has the advantages of simple structure, convenience for debugging and long service life.
Owner:SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD

Electromagnetic wire for new energy automobile driving motor and preparation method thereof

ActiveCN109801745AIt has the ability to resist high-frequency pulse partial dischargeExcellent resistance to electric heatWindings insulation shape/form/constructionFlat/ribbon cablesNew energyEngineering
The invention relates to an electromagnetic wire for a new energy automobile driving motor. The electromagnetic wire comprises a flat wire and an insulating layer. The insulating layer comprises a first polyimide layer coated outside the flat wire, a second polyimide layer coated outside the first polyimide layer, and a polyether-ether-ketone resin layer coated outside the second polyimide layer.The fillet radius of the flat wire is 0.25-0.3 mm. The first polyimide layer is formed by coating polyimide paint with the viscosity thereof to be 12-18 Pa*s at the temperature of 30 DEG C. The secondpolyimide layer is formed by coating polyimide paint with the viscosity thereof to be 5-10 Pa*s at the temperature of 30 DEG C. The electromagnetic wire disclosed by the invention has the advantagesof high-frequency pulse partial discharge resistance, ultrahigh voltage breakdown resistance, excellent electric heating resistance, mechanical property, chemical resistance, hydrolysis resistance, friction resistance and wear resistance, good toughness and strong radiation resistance.
Owner:SUZHOU JUFENG ELECTRICAL INSULATION SYST

Carotenoid high yield strain and application thereof

The invention provides a carotenoid high yield strain and application thereof, and relates to the field of microbe fermentation and metabolite thereof. The carotenoid high yield strain is Deinococcus wulumuqiensis R12M, and the preservation registration number is CCTCC No: M2014099. The invention further provides the application of the strain to the field of preparation of carotenoid. Compared with Deinococcus wulumuqiensis sp.nov. and Deinococcus radiodurans DSM 20539T, the wulumuqiensis R12M, provided by the invention, has better radiation resistance and carotenoid production property, and can be applied to production of natural pigment and natural anti-oxidant.
Owner:NANJING UNIV OF TECH

Polyimide/modified natural melanin nanocomposite and preparation method thereof

ActiveCN107286652AStrong radiation resistanceHigh UV shielding efficiencyHeat resistanceUltraviolet
The invention provides a polyimide / modified natural melanin nanocomposite. Polyimide in the nanocomposite is connected with natural melanin through chemical bonds, and the natural melanin surface is grafted with a silane coupling agent. The invention further provides a preparation method of the nanocomposite. Natural melanin is subjected to surface modification with the silane coupling agent (APTES), and then the modified natural melanin and polyimide in different proportions are composited, and the nanocomposite is formed. A matrix of the polyimide / modified natural melanin nanocomposite does not degrade in a photocatalytic process and is resistant to strong ultraviolet radiation, so that the mechanical property and heat resistance are outstanding, and the service life is longer.
Owner:HUBEI UNIV

Water-based paint with high weatherability

The invention relates to a water-based paint with high weatherability. The paint comprises the following raw materials by weight: 40-60 parts of a mixture of polyurethane resin and polystyrene-acrylate copolymer emulsion, 15-25 parts of kaolin, 0.5-3 parts of an iron series pigment, 0.1-0.8 part of borax, 0.5-2 parts of an anti-aging agent, 0.5-2 parts of antioxidant 3010, 0.5-3 parts of a defoaming agent HT6520, 0.1-3 parts of a dispersant, 0.1-1 part of an emulsifier, 0.1-1 part of ammonia, 5- 8 parts of PTFE and 25-50 parts of water; and the anti-aging agent is a mixture of a UV absorber UVP-327 and a light stabilizer 744 in a mixing proportion of 1-2:1. The invention mainly solves the technical problems of weak dispersion and weatherability of water-based paint in the prior art.
Owner:BLUESTAR CHENGDU NEW MATERIALS

Production of high-transmissivity window layer on n/p-shaped GaAs solar battery surface

The invention is concerned with production method of high transmission ration window layer zinc selenium sulfur to GaAs sun energy batteries structure in type of n+ / p. Take p type of GaAs or germanium mono crystal slice as underlay. Use metal organic compound vapor deposition and molecule bundle lift-off growth technology to develop sun energy batteries lift-off slice and extend to the project section of the top batteries. Extend a layer of zinc selenium sulfur material of the project section as window layer and extend impure GaAs cap layer on the window layer and get the batteries lift-off slice. Braising plating gold germanium nickel / gold positive electricity on the upper face of lift-off slice and produce titanium / gold negative electricity on the surface of high impure GaAs of the bottom of lift-off slice. Fret cap layer, alloy, braising plating reducing reflection film, fret table-board, encapsulate the batteries, fix device of gathering light, cooling device and the equipment for tracking the sun to produce the batteries.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI

Floating junction silicon carbide SBD device with block-shaped groove and buried layer

The invention relates to a floating junction silicon carbide SBD device with a block-shaped groove and a buried layer. The floating junction silicon carbide SBD device is characterized by comprising a metal, a SiO2 spacer medium, a groove, a primary N- epitaxial layer, a P+ ion injection region, a secondary N- epitaxial layer, an N+ substrate region and an ohmic contact region, wherein the P+ ion injection region is located on the surface of the secondary N- epitaxial layer, the groove is flush with the P+ ion injection region up and down and the groove and the P+ ion injection region are shaped as the same; or a circular, hexagonal or square block-shaped buried layer is taken as a floating junction is flush with the P+ ion injection region up and down and shaped the same as the P+ ion injection region. The floating junction silicon carbide SBD device with the block-shaped groove and the buried layer has either the advantages of large Schottky contact area and large forward on current of a groove-shaped silicon carbide SBD or the advantage of high breakdown voltage of a floating junction silicon carbide SBD.
Owner:XIDIAN UNIV

Radiation-resistant high-performance silica fiber and preparation method thereof

The invention relates to a radiation-resistant high-performance silica fiber and a preparation method thereof. The radiation-resistant high-performance silica fiber provided by the invention is composed of a silica glass material based fiber core, an inner cladding and an outer cladding, wherein the fiber core contains 0-2000ppm of hydroxyl group and 0-1000ppm of fluorine, the inner cladding is doped with 10000-20000ppm of fluorine, and the outer cladding is silica glass containing 1000-6000ppm of fluorine. The radiation-resistant high-performance silica fiber provided by the invention can beprepared by adopting a combined process method of VAD (vapour axial deposition) and MCVD (modified chemical vapour deposition) or PCVD (plasma chemical vapour deposition), namely a core layer is prepared by adopting VAD firstly, and different deposition and vitrifaction technological conditions are controlled to obtain core rods with different hydroxyl group and fluorine contents, the inner cladding doped with fluorine is prepared by adopting an MCVD or PCVD process, a sleeve containing a low-refractive index inner cladding is obtained, and then the core rods and the obtained sleeve are fusedinto a prefabricated rod or combined into a prefabricated rod assembly, and finally direct wire drawing is carried out to obtain the silica fiber. The silica fiber can be used for information transmission of a communication system, especially can be used as both a radiation-resistant optical fiber to guarantee long-distance communication and an energy transmitting optical fiber for transmitting ultraviolet light under the radiation environment.
Owner:HANGZHOU FUTONG COMM TECH CO LTD +1

Manufacturing method of radiation-resistant anti-shrinking hydraulic gel material

The invention discloses a manufacturing method of a radiation-resistant anti-shrinking hydraulic gel material. Barite, strontianite, and camsellite tailings are taken as the raw material, and mixed into a conventional silicate raw material according to the barium-strontium-boron synergistic principle. Then the mixture is sintered, after the sinter cools down, a proper amount of gypsum is added into the sinter, and the mixture is pulverized to produce the radiation-resistant anti-shrinking hydraulic gel material. The material is widely applied to hospital / nuclear plant buildings with a radioactive source or civil buildings with high requirements, and the problems of shrinking and cracking of conventional silicate cement are solved. The problem that the expansion of a large amount of clinker hydrate causes the structural destruction or destructions on decoration is solved. The comprehensive utilization of barite, strontianite, and camsellite tailings is achieved. The sintering temperature is reduced by 100 to 150 DEG C. The goals of energy saving and energy consumption reduction can be achieved. At the same time the material has an anti-radiation performance. The long-term problems of short service life of conventional silicate cement and shrinkage caused by dryness are solved.
Owner:深圳市凌烁家具工艺有限公司

Polyethylene double-side composite waterproof coiled material

The invention relates to the field of waterproof coiled materials and discloses a polyethylene double-side composite waterproof coiled material which is composed of, in a compositing manner, an inner layer 1, an outer layer 3 and a middle layer 2. The inner layer is composed of a polypropylene yarn filament non-woven cloth, the outer layer is composed of a polyester filament yarn non-woven cloth, and the middle layer is a sheet material prepared from polyethylene resin, wherein the middle layer is composited between the inner layer and the outer layer and the thickness of the middle layer is larger than those of the inner layer and the outer layer. The coiled material allows cold construction and cement wet pavement, is convenient to use, is strong in adhesion force, is good in stability, is high in tensile strength and ductility, is good in low-temperature flexibility and heat resistance, and is anti-corrosion and anti-radiation. The coiled material is widely used in waterproofing treatment on various roofs in industry and construction industry, and in waterproof engineering on basements, reservoirs, dams, highway tunnels, viaduct bridges, railway tunnels, air-raid shelter, grain depots, garbage stations, wastewater treatment plants and the like.
Owner:扬州金鹤防水工程有限公司

Thickener control system

InactiveCN101537272AWith automatic progressive rakeAutomatic progressive rake liftingSedimentation separationAutomatic controlAutomatic train control
The invention provides a thickener control system. An acquisition system of a field control cabinet sends electrical signals of operating state of the thickener through a control system, a storage system and an executive system so that a rotary bridge, a scrapping and collecting device and a hydraulic system of the thickener can automatically run according to programs; the field control cabinet is connected to a power source by a current collector; the electrical signals of operating state of the thickener are transmitted to a remote console by wireless communication, the remote console controls the field control cabinet by the wireless communication to control operation of the thickener so as to complete the rotary bridge control, the scrapping and collecting device control, the hydraulic system control, fault alarm and interlock control; and remote control, automatic control and manual control are provided. The system can automatically lift rakes one by one, realize mechanical pool cleaning function, avoid water discharge for cleaning, reduce waste, and greatly increase economic benefit of users. The remote operation realizes wireless communication between the rotary PLC control cabinet and a ground touch screen by Ethernet.
Owner:CITIC HEAVY INDUSTRIES CO LTD +1

Cable housing device

The invention discloses a cable housing device. The cable housing device comprises a wire spool, a rotating member, a winding member, a fixed gear, a planetary gear, a driving motor, a transmission mechanism, a driving wheel, a swing arm and a connecting rod, wherein the fixed gear and the rotating member are arranged on the end face of the wire spool, respectively; the driving motor and the winding member are fixed at two ends of the rotating member, respectively; the planetary gear is connected to an output shaft of the driving motor and is engaged with the fixed gear; the driving wheel is rotatably mounted on the winding member; one end of the swing arm is eccentrically pivoted to the driving motor; two ends of the connecting rod are pivoted to the winding member and the swing arm, respectively; the driving wheel rotating drives the other arm end of the swing arm to swing up and down; the transmission mechanism is connected between the other output shaft of the driving motor and the driving wheel; and the driving motor drives the driving wheel to rotate by virtue of the transmission mechanism. According to the cable housing device, two movements, rotation and swing, of the swing arm are synchronized by combining gear transmission and connecting rod transmission, so that a cable can be uniformly arranged. Moreover, electric members are not needed, and the cable housing device is relatively strong in irradiation resistance and long in service life.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +2
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products