168 results about "Radiation resistant" patented technology

The invention discloses a radiation-resistant protective cable for a nuclear power station and a preparation method thereof, and belongs to the technical field of cables, the radiation-resistant protective cable for the nuclear power station comprises a cable body and a sheath layer, and the sheath layer comprises the following components in parts by mass: 100 parts of polypropylene resin, 20-40 parts of ethylene propylene diene monomer and 5-12 parts of modified multi-walled carbon nanotubes. 8-15 parts of a heat conduction enhancer, 2-6 parts of an antioxidant, 1-3 parts of a heat stabilizer and 4-8 parts of a plasticizer; the heat conduction reinforcing agent is prepared by carrying out surface modification on composite powder of aluminum nitride and boron nitride through a silane coupling agent. Through the synergistic effect of the modified multi-walled carbon nanotubes and the surface modified heat-conducting enhancer, the heat-conducting property, radiation resistance and heat stability of the cable are remarkably improved on the premise of keeping excellent electrical insulation property.

The invention relates to the technical field of static storage, and particularly discloses an anti-radiation SRAM (Static Random Access Memory) unit, array and storage and calculation integrated system, which realizes the balance of anti-radiation capability and engineering feasibility through the collaborative design of a circuit and the system. A polarity-reinforced RHCIM-16T unit structure is adopted as the core, and directional conductive constraint is introduced, so that complex multi-node flipping is simplified into a single'lock 0 'error, and the error rate is reduced from the source. On the basis, a lightweight single error correction code is combined to form an efficient fault-tolerant mechanism of circuit simplification and SEC coding. According to the scheme, through the design of splitting word lines and the like, logic operations such as AND and NOR are compatible, and stable execution of the storage and calculation integrated function in a radiation environment is ensured. Simulation and experiment results show that the robustness and the expandability of the memory array in the radiation environment can be remarkably enhanced while the relatively low area and the relatively low power consumption overhead are maintained.

The invention relates to the technical field of photovoltaic adhesive films, and discloses an anti-radiation photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The adhesive film is of a multi-layer co-extrusion composite structure formed by co-extrusion molding and irradiation, and comprises an upper surface layer, a middle functional layer and a lower surface layer, the upper surface layer is a radiation-resistant polymer matrix (such as EVA-g-St, EVA-g-(alpha-MeSt), POE-g-St and an EVA / POE-aromatic resin blend); the middle functional layer comprises a packaging resin matrix, an anti-radiation agent (which is a nano-scale radiation protection material such as a rare earth oxide, a heavy metal oxide, a boron-containing compound and a polymer derivative of a benzotriazole type ultraviolet absorbent) and a stabilizer; and the lower surface layer is a bonding surface layer formed by light-transmitting bonding resin. The adhesive film is good in radiation resistance, the light transmittance, the cohesiveness, the elongation at break retention rate, the yellowing resistance, the power attenuation resistance of a component and the like after accelerated radiation are obviously improved, and the service life of the component under strong radiation can be prolonged.

The composite material is mainly applied to protection and improvement of electronic devices in a high-temperature environment. (1) a polyimide film layer; because the polyimide film has excellent ductility, high and low temperature resistance, electrical insulation, cohesiveness, radiation resistance and medium resistance, the polyimide film can be used for a long time in a temperature range of-269 DEG C to 280 DEG C, and can reach a high temperature of 400 DEG C in a short time. The polyimide film has excellent high-voltage-resistant insulativity, and the highest withstand voltage of the film with the thickness of 0.1 mm is larger than or equal to 12 kv. The polyimide film can be bent and extended in various ways according to use scenes, and has no influence on material performance (2) the lowest density of the polyimide foam can reach 5.4 kg per cubic meter, and the density is far lower than that of other common materials. The high-toughness high-temperature-resistant steel not only can bear the long-term working temperature as high as 350 DEG C, but also can keep excellent toughness in an environment as low as-269 DEG C. Zero VOC and flame retardance are achieved, and good environment friendliness and chemical stability are achieved. After the two materials are compounded and combined, better heat insulation and temperature resistance can be achieved in the using process, meanwhile, due to the low density of the polyimide foam, better shaping can be achieved after the insulating paint is combined and cured, and better heat conduction and heat dissipation can be achieved on the surface.

The environment-friendly nuclear power high-voltage power cable comprises a cable body, and the cable body comprises a conductor, a semi-conductive shielding layer, an insulating layer, a filling layer, a belting layer, a waterproof layer, an armor layer and an outer protective layer from inside to outside in sequence; the semi-conductive shielding layer is made of a low-smoke halogen-free cross-linked polyolefin semi-conductive material; the insulating layer is made of a radiation-resistant low-smoke halogen-free cross-linked polyolefin composite material; the filling layer is a low-smoke halogen-free polypropylene filling rope; the belting layer is made of a low-smoke halogen-free polypropylene and water-based butyl rubber composite material; the semi-conductive shielding layer tightly wraps the outer side of the conductor, the semi-conductive shielding layer is made of a low-smoke halogen-free cross-linked polyolefin semi-conductive material, is used for uniformizing an electric field on the surface of the conductive wire core and preventing point discharge, and is firmly bonded with the adjacent insulating layer, and the insulating layer is made of a radiation-resistant low-smoke halogen-free cross-linked polyolefin composite material, so that the radiation-resistant low-smoke halogen-free cross-linked polyolefin semi-conductive material has good radiation resistance. And the arrangement of the filling layer, the belting layer and the outer sheath layer improves the comprehensive performance of the cable body and meets the halogen-free, low-smoke, low-toxicity and environment-friendly requirements of the cable.

The invention relates to the field of nuclear cable manufacturing, in particular to a radiation-resistant cable for a nuclear power platform and a preparation method of the radiation-resistant cable. According to the nuclear cable, the five-layer structural design of conductor-insulation-shielding-polyimide film-sheath is adopted, the overlapping wrapping technology of the polyimide film is combined, and the comprehensive performance of the cable in the extreme environment of a nuclear power platform is comprehensively improved. The low-smoke halogen-free flame-retardant ethylene-propylene rubber is adopted as an insulating material, and through the cooperation of an EPDM / POE blending system and the ternary composite flame retardant, the insulating property is stable under the condition of ensuring radiation, and the flame retardant property is excellent. The sheath material is added with the intumescent flame retardant and the polysilazane modifier, so that the cable has no crack at the low temperature of-40 DEG C, the bending radius can be controlled to be less than 5 times of the outer diameter, and the cable is adaptive to the layout of a narrow cabin. Through the synergistic effect of material innovation and structural design, the balance of flame retardant property, mechanical property, radiation resistance, low temperature resistance, aging resistance and small-space applicability of the nuclear cable is realized.

The utility model discloses a kind of irradiation resistance underwater light supplementing lamps, belong to underwater light supplementing lamp technical field, solve the irradiation range of the underwater light supplementing lamp of multiple lamp body becomes larger, but condensing effect is obviously worse, so cannot condensing clear irradiation certain object, affect the visibility when actual underwater operation problem. Including circular arc lamp panel, the lamp body of several fixed connections in lamp panel, and the light-reflecting plate of the rotation connection in lamp panel outer circle, several light-reflecting plate can be relative lamp panel flip, several light-reflecting plate synchronous rotation setting. The utility model uses, when needing large range illumination, traction electromagnet pulls connection rope, makes light-reflecting plate deflect, torsional spring accumulates elastic potential energy, turns wire pole and prevents connection rope scratch breakage. When needing condensing irradiation, traction electromagnet is powered off, release connection rope, torsional spring releases potential energy and drives light-reflecting plate reverse deflection, forms spotlight cover, makes light concentration, clear irradiation object, does not affect underwater operation visibility.

The invention relates to the technical field of thermal control coatings, in particular to a liquid metal commercial aerospace thermal control coating adaptive to extreme temperature difference, which comprises a substrate binding layer and a thermal control functional layer, the thermal control functional layer is arranged on the side wall of the substrate binding layer, a thermal circulation pipe is arranged in the thermal control functional layer, and a composite heat conduction layer is arranged on the side wall of the thermal control functional layer. A limiting stabilizing layer is arranged on the side wall of the composite heat-conducting layer. By arranging the multi-layer composite structure and the liquid metal, efficient heat regulation and control in an extreme temperature difference environment are achieved, the substrate combination layer is made of a radiation-resistant material, it is ensured that the structure stability is kept in a strong radiation environment, the liquid metal material in the heat control function layer and a cross circulation plate form a three-dimensional heat conduction network through a disc-shaped heat control circulation pipe, and the heat conduction efficiency is improved. And by arranging the separation cavity, atomic oxygen erosion is effectively blocked, and the inorganic thermal control coating layer of the separation cavity can adjust the surface thermal radiation characteristic.

The invention relates to the technical field of cables, in particular to a self-checking acid and alkali resistant nuclear cable which comprises conductors, double-layer insulation, a polyimide tape layer, a filling layer, a waterproof inner sheath and an outer sheath. The waterproof inner sheath and the waterproof outer sheath are made of acid and alkali resistant fluororubber materials, and can cope with long-term soaking of strong acid and alkali solutions under extreme accidents of a nuclear power station; through the combined design of double-layer insulation and the polyimide tape layer, the radiation resistance, high temperature resistance and flame retardance of the cable are improved, and the special working condition requirements of the nuclear power station are met; through the synergistic effect of the built-in diversion monitoring pipe, the external diversion monitoring pipe and the magnetic control reciprocating diversion pump, in cooperation with the temperature and humidity sensor and the pressure sensor, temperature, humidity and pressure state parameters in the cable can be monitored in real time, so that the running state of the cable is judged, the internal heat dissipation effect of the cable is enhanced, and when the parameters exceed a preset threshold value, the cable is protected. Early warning signals can be sent to an external monitoring terminal in time, so that workers can check hidden dangers in time, and the maintenance cost is reduced.

This invention relates to the field of neutron dose monitoring, specifically to a method and apparatus for monitoring the dose equivalent around neutrons over a wide energy range. The apparatus includes an outer moderator, a thermal neutron absorbing layer, a high-energy neutron compensation layer, and an inner moderator. The high-energy neutron compensation layer is composed of a heavy metal material capable of undergoing a significant neutron multiplication reaction with ultra-high-energy neutrons. The thermal neutron detector is a radiation-resistant solid-state semiconductor detector, comprising a silicon carbide semiconductor substrate and an enrichment layer closely adhering to its surface. 6 The device is equipped with a lithium fluoride thermal neutron converter; an initial thermal neutron detector group is deployed within the device to collect thermal neutron fluence information under different slowing degrees; based on the initial thermal neutron detector group, position optimization and weight coefficient output are performed, and multiple groups of thermal neutron detectors in the first depth order are selected to make the total dose response flat in a wide energy range for dose equivalent monitoring.

A vacuum adiabatic body according to the present embodiment can include a first plate, a second plate, a seal configured to seal the first plate and the second plate to provide a vacuum space, and a support configured to maintain the vacuum space. Optionally, the support can include a first support having a first support plate formed in a mesh shape; and a plurality of spacer coupling portions protruding from the first support plate. Optionally, the support can include a second support having a second support plate formed in a mesh shape; and a plurality of spacers protruding from the second support plate and coupled with each of the plurality of spacer coupling portions to form a plurality of bars together with the plurality of spacer coupling portions. Optionally, the support can include a radiation resistant sheet supported by a portion of the plurality of bars and spaced apart from at least one of the first support plate and the second support plate. Alternatively, each of the support plates can include a plurality of through-holes. Optionally, a distribution structure produced after injection molding of the first support and the second support can be disposed in some of the plurality of through-holes.

The utility model belongs to the technical field of power cables, and particularly relates to an IE-grade K3-class radiation-resistant power cable, which comprises a protective sleeve, ventilation and heat dissipation ports arranged at equal intervals are arranged on the outer surface of the protective sleeve, a connecting sleeve is arranged in the protective sleeve, a power cable is arranged on the inner wall of the connecting sleeve, and two groups of support rings are fixedly connected to the outer surface of the connecting sleeve. The side faces, close to each other, of each set of supporting rings are fixedly connected with supporting plates arranged at equal intervals, the side face, away from the connecting sleeve, of each supporting plate is fixedly connected with two sets of telescopic springs, and the ends, away from each other, of each set of telescopic springs are fixedly connected with connecting plates. Particularly, an elastic buffering system composed of a supporting ring, a supporting plate, a telescopic spring and a connecting plate can convert mechanical impact into spring deformation energy, the external force resisting performance is greatly improved, and meanwhile an efficient heat dissipation path can be formed by matching equidistant ventilation heat dissipation openings in the surface of the protective sleeve with an air channel between the protective sleeve and a connecting sleeve.

The application relates to a preparation method of a radiation-resistant PVC resin and belongs to the technical field of grafted polymer compositions. The existing radiation-resistant modification method of the PVC resin has low radiation-resistant modification effect or seriously affects the mechanical properties of the PVC resin. The method is as follows: 1) uniformly dispersing an initiator, a dispersing agent, a radiation-resistant agent and a chain transfer agent in water; 2) vacuumizing and adding a vinyl chloride monomer, uniformly stirring at normal temperature and heating and reacting; 3) uniformly stirring after adding a terminating agent and drying to obtain the PVC resin; wherein the radiation-resistant agent in the step 1) is a solution of p-methoxy cinnamoyloxy propyl trimethoxysilane and 4-methyl-acrylate-2-hydroxy benzophenone in any proportion. The radiation-resistant component is combined into the PVC resin particles, and the radiation-resistant capacity is improved from the essence of the particles. The selected specific radiation-resistant agent component can be well combined with the PVC resin, and does not affect or even improves the mechanical properties.

The invention discloses a radiation-resistant antifouling paint and a preparation method thereof. The radiation-resistant antifouling paint comprises the following components in percentage by mass: 20-30% of radiation-resistant antifouling resin; 4-10% of a dissolution auxiliary agent; 10-20% of a radiation-resistant filler; 30-50% of an antifouling agent; 0.5%-2% of a surfactant; 0.5-2% of an anti-settling auxiliary agent; and 5-15% of a solvent. According to the radiation-resistant antifouling coating disclosed by the invention, through a benzene ring structure in a resin structure and a shielding effect of mica and flake graphite powder in the coating, the risk of paint film pulverization, cracking and failure caused by radiation can be effectively avoided, and under the stable hydrolysis effect of the main chain degradation type polysilane methacrylate self-polishing resin in seawater, the radiation-resistant antifouling coating has the advantages of good anti-fouling effect and good anti-fouling effect. The antifouling agent can be released continuously and stably, long-term antifouling performance is achieved, and normal operation of underwater equipment and ships is guaranteed.

The invention belongs to the technical field of high polymer materials, and particularly relates to a radiation-resistant halogen-free flame-retardant cable material for a nuclear power station cable and a preparation method thereof. The cable material is prepared from the following components in parts by mass: 50 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene propylene diene monomer, 20 parts of ethylene-octylene copolymer, 10 parts of maleic anhydride grafted ethylene-octylene copolymer, 3 to 6 parts of silicone master batch, 180 to 220 parts of active magnesium hydroxide, 40 to 60 parts of bismuth hydroxide, 10 to 20 parts of flame-retardant synergist, 3 to 6 parts of main antioxidant and 1 to 3 parts of auxiliary antioxidant. 2 to 4 parts of TAIC (triallyl isocyanurate) and 3 to 6 parts of octaphenylcyclotetrasiloxane; the cable material has excellent radiation-resistant stability, halogen-free environment-friendly flame retardance, balanced mechanical properties and long-term thermal stability, the preparation process is simple, and the cost is controllable.

The invention relates to the technical field of nuclear energy fuel cladding materials, in particular to a nuclear high-temperature-resistant and radiation-resistant ODS ferrite alloy and a preparation method of a pipe of the nuclear high-temperature-resistant and radiation-resistant ODS ferrite alloy. The ODS ferrite alloy comprises the following components in percentage by mass: 11.0 to 15.0 percent of Cr, 1.0 to 3.0 percent of W, 0.1 to 1.0 percent of Mn, 0.0 to 0.6 percent of Ta, 0.2 to 0.6 percent of Ti, 0.15 to 0.5 percent of Y, 0.11 to 0.26 percent of O and Clt, 0.1%, Zirt; %, 0.01%, Allt; the mass ratio of Y to Ti is equal to 0.4-1.0, and the pipe is prepared by adopting the processes of hot forging, low-temperature quick forging and room-temperature rolling. The ODS ferrite alloy and the pipe thereof provided by the invention have a microstructure with fine grains and uniformly distributed nano oxides, the alloy and the pipe have excellent high-temperature mechanical properties, the quality of the inner surface and the outer surface of the pipe is good, and the linear precision is high.

According to the optical-grade irradiation-resistant PETG polyester product and the preparation method thereof, through catalyst system innovation and a multi-stage stabilization process, synchronous improvement of low chromaticity (b value is smaller than or equal to 0.5), high light transmittance (larger than or equal to 95%) and irradiation resistance (delta YI is smaller than or equal to 1.0) is achieved, and the contradiction between optical performance and stability in the prior art can be solved. Special equipment is not needed, the existing PETG production line can be implemented only by adjusting the formula of the catalyst and the auxiliary agent, and the industrialization cost is low. The double requirements of the fields of medical equipment sterilization, aerospace optical windows, high-end packaging and the like on the irradiation resistance and the optical performance of the material can be met, and the market prospect is wide.

A hoisting plate is fixedly connected with a boss through a net plate to form a hoisting frame, the two hoisting frames are fixedly connected together through two bridge frames to form the damping frame, the hoisting plate, the bridge frames, a supporting table, the boss and the net plate are all made of Q355B steel, the thickness of the supporting table is 20 mm, the thickness of the supporting table is 20 mm, and the thickness of the boss is 20 mm. The thickness of the hoisting plate is 8mm, the thickness of the net plate is 6mm, and the thicknesses of the bridge frame and other plates are 5mm; the net plate and the hoisting plate are provided with cross-shaped reinforcing ribs with the width of 5 mm and the height of 8 mm, and triangular reinforcing ribs with the thickness of 5 mm are arranged on the rack main body; lightening holes are formed in a web plate of the screen plate; the boss is matched with the supporting table in a convex-concave structure, and the polyurethane pouring layer is filled in a convex-concave gap between the boss and the supporting table to form an anti-falling structure. The vibration isolator can effectively reduce impact stress, and has the characteristics of good vibration isolation effect, irradiation resistance, corrosion resistance, light weight, high strength and the like.

The utility model relates to the technical field of film heaters, in particular to an irradiation-resistant heater, which comprises an electric heating layer, a pair of leads and a pair of insulating layers. The electric heating layer is fixedly arranged between the pair of insulating layers; the head ends of the pair of wires are electrically connected with the positive electrode of the electric heating layer and the negative electrode of the electric heating layer respectively. According to the utility model, the thermoplastic connecting layer made of the thermoplastic polyimide material is adopted to replace a bonding layer of a film heater in the prior art, so that the total radiation-resistant dose of the device is improved to 1.0 * 1010rad (SI), and the device can meet the requirements of the use environment outside a spacecraft cabin; the defect that a film heater in the prior art is poor in environment adaptability is overcome.

The present invention discloses a camouflage stealth skin based on structural color, comprising a base layer, a first reflective layer, an intermediate dielectric layer, a second reflective layer and a top protective layer arranged in sequence from bottom to top, wherein the material of the first reflective layer is selected from one of Al, Ag or Au. The present invention also provides a preparation method of the camouflage stealth skin based on structural color. Compared with the prior art, the camouflage stealth skin based on structural color prepared by the present invention has stable performance, radiation resistance, long service life, strong color customization capability, and can be customized in a variety of colors. At the same time, the raw materials for preparing the camouflage skin of the present invention are easily available, and the preparation method is simple, which not only can realize batch preparation, but also is green, environmentally friendly and pollution-free.

The application relates to a glass for liquid scintillation capillary array and a preparation method and application thereof. The glass components in terms of mole percentage include: 80-85% of SiO2; 0.5-4% of Al2O3; 4.5-8% of B2O3; the sum of K2O and Na2O is 2-8%; the sum of PbO and CdO is 1-2%; 1.5-4% of ZrO2; the sum of KFH2 and K2SiF6 is 1-4%; 0.2-0.5% of BaF2; and 0.5-1% of CeO2. The technical problem solved is how to provide a glass with low refractive index, high softening point, good anti-crystallization performance, good pressure resistance and radiation resistance, so that the glass can be used for preparing a liquid scintillation capillary array.

The utility model provides an anti-contamination instrument water filling and air exhausting tool which comprises an equipment body, a lower sealing component, an upper sealing component and a drainage pipeline, a pipeline channel is formed in one end of the equipment body, and the lower sealing component and the upper sealing component are connected to the two ends of the pipeline channel of the equipment body respectively. The drainage pipeline is connected to the upper sealing component and communicated with the pipeline channel of the equipment body, and the pipeline channel of the equipment body is connected with the instrument water filling and exhausting connector through the lower sealing component. According to the utility model, the equipment main body made of a radiation-resistant material and the built-in rotating ratchet wheel are matched with the instrument pollution discharge plug, and are matched with the two built-in sliding sealing rings in the lower sealing part to be connected with the instrument pollution discharge port, so that the radioactive medium is drained, and the pressurized radioactive medium can be effectively prevented from splashing; the safety problem caused by the fact that radioactive media in a pipeline splash or flow out when a traditional water filling and air exhausting tool such as an open spanner is used for instrument water filling and air exhausting is solved.

This application discloses a radiation-resistant glass, a chemically strengthened glass, and their preparation methods and applications, belonging to the field of glass material technology. The radiation-resistant glass, based on the mass percentage of oxides, comprises: SiO2: 64.0~72.0%, Al2O3: 1.0~7.0%, MgO: 1.0~2.0%, ZnO: 2.0~5.0%, Na2O: 5.0~9.0%, K2O: 3.0~5.5%, CaO: 0.1~2.0%, B2O3: 0~6.0%, TiO2: 0~3.0%, CeO2: 2.0~6.0%, Sb2O3: 0.01~2.0%; and satisfies: 1.5≤(B2O3+Na2O) / (Al2O3+ZrO2)≤5; 1.70≤Na2O / K2O≤1.80; 0≤TiO2 / CeO2≤1.0. This application enables the glass to possess excellent radiation resistance and optical stability, low coefficient of thermal expansion, high strength and safe breakage characteristics by adjusting the basic components and proportions. It can be used in applications that require ultraviolet cutoff and resistance to high-energy radiation, such as in solar modules, as a cover plate for solar modules in aerospace or outer space environments.

The utility model relates to the technical field of intelligent cards, and discloses an anti-radiation intelligent card, which comprises an intelligent card bottom plate, the upper end of the intelligent card bottom plate is fixedly provided with a mounting groove, the upper end of the mounting groove is fixedly provided with an induction ring, one end of the induction ring is fixedly provided with a connection data line, and the other end of the induction ring is fixedly provided with a power supply. A fixing clamping groove is fixedly formed in one end of the connecting data line, a card recognition plate is fixedly arranged at the upper end of the interior of the fixing clamping groove, a clamping structure is fixedly arranged at the upper end of the mounting groove, and a protection structure is fixedly arranged at the upper end of the intelligent card bottom plate. According to the anti-radiation intelligent card, through the improvement of the intelligent card, the clamping and protection capability of the intelligent card is improved, in the actual use process of the intelligent card, the SIM card can be effectively fixed and clamped according to needs, the protection and radiation resistance of the intelligent card are facilitated, and the use experience of the anti-radiation intelligent card is improved.

A nuclear-grade radiation-resistant infrared video monitoring system belongs to the technical field of nuclear facility safety monitoring, and comprises a radiation-resistant infrared camera used for collecting infrared video data in a strong nuclear radiation environment; the image processing unit is used for performing enhancement processing on the infrared video data, removing non-uniform fixed mode noise caused by radiation and obtaining an enhanced video image; and the intelligent analysis and prediction unit is used for carrying out quantitative identification on the enhanced video image, obtaining pipeline defects in the video image and carrying out risk prediction. The problems that no available infrared monitoring equipment exists in a radiation area of an existing nuclear facility, the existing nuclear facility depends on an imported visible light camera (the problems of short service life, sensitivity to temperature, poor image quality and the like), and the existing nuclear facility lacks intelligent early warning capability are solved.

The utility model discloses a radiation-resistant long-life low-noise coaxial cable for a nuclear power station, which comprises a conductor formed by twisting tinned soft copper, and a wrapping semi-conductive layer, an insulating layer, an extruded semi-conductive layer, a comprehensive shielding structure, a wrapping high-temperature-resistant layer and an outer sheath are sequentially arranged outside the conductor. The tinned soft copper conductors are stranded, so that the structural stability is ensured, and oxidation is avoided; the insulating layer is made of radiation-resistant and long-service-life crosslinked polyethylene, so that the transmission performance is ensured to be stable; noise is reduced through the semi-conductive layer, and signal quality is improved; a comprehensive shielding structure is adopted, so that the electromagnetic compatibility is enhanced; the high-temperature-resistant layer is arranged to meet the high-temperature requirement of the And the outer sheath is made of a radiation-resistant polyolefin material, so that the mechanical property and the service life are ensured. Overall performance is excellent, and the system is suitable for complex environments.

A glass material with high refractive index and radiation resistance, the method for preparing the same, and applications thereof, wherein the glass material, by mass percentage, includes 20-40% SiO2, 0-10% Al2O3, 0-5% CaO, 5-20% BaO, 40-50% PbO, 1-5% CeO2, 0-5% La2O3, 0-2% Nb2O5, 0-2% Ta2O5, 0-1% Bi2O3, and a content of 0-1% of an oxide selected from Na2O, K2O, Rb2O, and Cs2O. The glass material has a refractive index≥1.80, a glass transition temperature≥560° C., a yield point temperature≥650° C., and good thermal resistance. Its coefficient of thermal expansion is (85-90)×10−7 / ° C., indicating good thermal processability, suitable for forming large-sized devices. After irradiation with a 4700Gy dose of X-rays, a transmittance reduction is ≤2%, making it suitable for creating radiation-resistant optical components such as optical glass and fiber optic panels.

The invention discloses a high-temperature and vibration coupled soft sealing structure, which is used for a high-temperature vibration sensor calibration device and comprises a base, an outer corrugated pipe, an inner thermal radiation shielding layer and a fixed mounting block, the corrugated pipe and the thermal radiation shielding layer are of symmetrical cylindrical hollow metal structures, and the thermal radiation shielding layer is arranged on the inner side of the corrugated pipe. The fixed mounting block is a cylindrical metal mounting block, the base is of a symmetrical cylindrical hollow metal structure, the upper end of the corrugated pipe and the upper end of the heat radiation shielding layer are connected with the fixed mounting block, the lower end of the corrugated pipe is welded and fixed to the base, and a plurality of through holes are formed in the fixed mounting block and the base respectively. The connecting piece is fixedly connected with the high-temperature vibration sensor calibration device through a screw; the corrugated pipe, the base and the fixed mounting block are made of high-temperature-resistant metal materials, the corrugated pipe is formed by welding thin metal plates in a corrugated shape, and the inner thermal radiation shielding layer is made of thermal radiation prevention metal materials. According to the invention, heat leakage can be reduced, the uniformity of a temperature field is improved, and the calibration precision is improved.

A space active optical cable (SAOC) includes a cable including one or more optical fibers, and two or more electrical transceivers on opposing ends of the cable and interconnected by the cable. Each of the electrical transceivers includes an enclosure that encloses one or more light sources, one or more light detectors, and control electronics. Also included in the enclosure are a coupling medium to couple light into and out of the one or more optical fibers. The coupling medium can be reflecting surface or an on-axis mount. The enclosure provides a suitable heat propagation and electromagnetic interference (EMI) shielding, and the cable and the two or more electrical transceivers are radiation resistant. SAOC features optionally support a health check algorithm that allows trending optical performance in the absence of an optical connector and a potential surface treatment to increase nominally low emissivity of an EMI conductive surface.

The application discloses an anti-radiation sensor, which comprises a sensor body, a base fixedly connected to the bottom of the sensor body, and a sensing surface on the top of the sensor body; and an anti-radiation assembly surrounding the side surface of the sensor body, which comprises, from inside to outside, a heat insulation layer, an anti-radiation layer and a protective shell. The application provides an anti-radiation sensor, which can reduce the influence of external radiation on the sensor by arranging the anti-radiation assembly outside the sensor body, so that the sensor can normally work in a high-dose-rate and high-cumulative-dose radiation environment, and stable operation of the sensor is ensured.