173results about How to "Large temperature range" patented technology

The invention provides a method for preparing a multilevel porous carbon base composite phase change material, and belongs to the field of composite phase change materials. The method comprises the following steps: at first, preparing an organic metal skeleton material by using such methods as a solution method, a solvothermal method or a stirring synthesis method; with the organic metal skeleton material as a template, high temperature carbonizing under the protection of an inert gas, and changing the carbonizing temperature and the post treatment manner to obtain a multilevel porous carbon material with a super-large specific surface area and a super-large pore volume; selecting proper solvents according to different kinds of phase change core materials, preparing the phase change core materials to a solution, dispersing the porous carbon material into the solution, removing the solvent by such manners as heating, and meanwhile the phase change core materials are adsorbed and limited in the porous carbon material. The composite phase change material prepared by the method provided by the invention has good thermal storage property, can effectively avoid the leakage problem of the phase change core material, and has the advantages of excellent heat transfer property, good cycling stability and wide application range, and the process is simple and is suitable for large-scale production.

The invention belongs to the technical field of materials, and relates to a wave-transmitting core clamping material and a manufacturing method and application thereof. The wave-transmitting core clamping material comprises an upper skin layer, a core layer and a lower skin layer, wherein the upper skin layer and the lower skin layer are bonded on the two sides of the core layer, respectively; the upper skin layer and the lower skin layer are made of a fiber-reinforced thermoplastic composite material or a laminated material of the fiber-reinforced thermoplastic composite material and a transition material. The prepared wave-transmitting core clamping material provided by the invention has the characteristics that the quality is light, the intensity is high, the wave-transmitting property is good, the adaptive temperature range is wide, and the core clamping material is manufactured to be in different shapes through different manners of hot pressing, vacuum forming and the like so as to meet the requirement on the shape of an antenna cover.

The invention provides a laser heating assisted turning device and method. The laser heating assisted turning device comprises a turning device body, a laser device, a non-contact temperature measuring device and a control device, wherein a tool and a workpiece are fixed to the turning device body, the tool is detachably connected with the turning device body, the laser device is used for heating the workpiece through laser, the non-contact temperature measuring device is used for acquiring the temperature at the cutting position of the workpiece in real time, and the control device is used for comparing data of an optimum temperature field stored in the control device with temperature data acquired by the non-contact temperature measuring device in real time and controlling the laser device to adjust laser parameters so as to achieve the optimum temperature field if difference exists. The laser heating assisted turning device has the advantages that the laser parameters are adjusted in a data matching mode so that the temperature field at the cutting position of the workpiece can be always consistent to the optimum temperature field, the cutting performed in the temperature field makes the service life of the tool longest, the machined surface quality of the workpiece is the best, and the turning efficiency is the highest.

The invention relates to a high-temperature micro-nano press mark test device and method in vacuum environment, and belongs to the field of mechanical and electronic integration precise instrument. The device can be used in vacuum environment; the oxidization caused by high-temperature environment on a press head and a test specimen can be prevented; the influence of air flowing on the test specimen heating is weakened; the stable heating temperature of the test specimen is ensured; further, the test analysis on the test specimen micro mechanical properties can be started; the characteristics parameters and the like of material hardness, elasticity modulus, creep properties and thermo-mechanical coupling effects are obtained so as to study the influence rule of variable-temperature and high-temperature environment on the material micro mechanical behaviors, deformation damage mechanisms and micro tissue structure evolution; the material and product design manufacturing, service prediction and reliability evaluation are guided. The structure of the device is compact; the measurement precision is high; the application range is wide; the wide application prospects are realized in the fields of material science, equipment manufacturing, ferrous metallurgy, national defense and military, aerospace and the like. According to the test method provided by the invention, the rich material micro mechanical property test theories and technical systems are combined.

High temperature thermal energy storage, distinctive in that the storage comprises: a thermally insulated foundation, at least one self-supported cassette arranged on said foundation, which cassette is a self-supporting frame or structure containing a number of concrete thermal energy storage elements, some or all of said elements comprising embedded heat exchangers, a pipe system, the pipe system comprising an inlet and an outlet for thermal input to and output from the storage, respectively, and connections to said heat exchangers for circulating fluid through said heat exchangers for thermal energy input to or output from said thermal energy storage elements, and thermal insulation around and on top of the at least one self-supported cassette with concrete thermal storage elements. The invention also provides a method of building and methods of operating the storage.

The invention provides a functional stretch film with hot seal property, and in particular relates to a hot-seal unidirectional or bidirectional stretch film, which has the hot seal strength of more than or equal to 3N/15mm and the thickness of more than or equal to 0.010mm and less than or equal to 0.150mm and which is formed by a single layer, two layers or more than two layers of polyolefine resin by an auxiliary co-mixing process and a blow molding, flow casting extrusion stretching or co-extrusion stretching process. The functional stretch film solves the technical problem that the effective hot seal cannot be achieved on an occasion with higher hot-seal requirements due to difficult obtaining of hot seal or serious hot-seal performance reduction when the polyolefin film is stretched. The product has the advantages of high mechanical strength, excellent optical property, obviously high water vapor resistance, anti-puncturing property and extremely good seal grease resistance and anti-pollution hot seal property, and can be widely applied to bags and automatic filling type sealed packages of foods, articles of daily use, cosmetics, chemicals, pesticides, military products and medical products as well as intaglio printing films and flexographic printing films, particularly various hot-seal materials under the dry-type lamination, wet-type lamination and extrusion lamination processing conditions.

The invention relates to a latent heat storage material comprising a first phase change material, at least one second phase change material different from the first phase change material, and an expanded graphite material wherein the first phase change material and the at least one second phase change material are intermixed and the latent heat storage material exhibits a phase transition over a range of temperatures. The invention also relates to a process for the preparation of a latent heat storage material comprising combining a mixture of an expanded graphite material and a first phase change material with at least one different second phase change material.

The invention relates to an electromechanical ACBS (Anti-lock Central Braking System) retarder control device and its control method, which mainly includes air circuit control and electronic control, and the air circuit is equipped with a PCV regulating valve (16) on the original air brake circuit. The normally closed solenoid valve (19) acts as a control valve to control the air pressure of the retarder air chamber, and uses the parking air reservoir to complete the retarder air supply without affecting the original braking performance of the vehicle. The retarder is cooled by circulating cooling water, and the cooling water is recycled by the electric water pump (25). The central retarder control system can judge the driver's operation, prevent misoperation, and realize the real-time monitoring of speed, temperature and pressure, retarder brake anti-lock, CAN bus communication, display and alarm and other functions. The control of the PCV regulating valve (16) and the normally closed solenoid valve (19) is realized through the high-power drive module, and the ECU of the control circuit adopts ISP programming method, power management, hardware watchdog and other methods to ensure better stability of the controller sex.

The invention discloses a concrete transporting machine, an end hose of a cantilever crane system thereof and a preparation method of the end hose. The end hose of the cantilever crane system, which is disclosed by the invention, comprises a hose body and a fiber reinforcing layer compounded on the outer surface of the hose body; the material of the hose body comprises polyurethane, and the fiberreinforcing layer comprises glass fibers and/or carbon fibers; and preferentially, the fiber reinforcing layer is compounded on the outer surface of the hose body through a coupler. Because the polyurethane has stronger wear resistance, the wear rate of the hose body of the end hose is lower; moreover, the chemical property of the polyurethane is more stable, and influences due to external environment and temperature change on the properties of the end hose can be reduced, so that the end hose has longer service life; and in addition, the strength of the end hose is guaranteed through the fiber reinforcing layer consisting of the glass fibers and/or the carbon fibers to meet the requirements on transporting materials and controlling a delivery outlet, so that the end hose has lighter weight, which is also beneficial to controlling and operating the end hose.

The invention relates to a method for hydrolyzing carbonyl sulphide (COS), which is used for mainly solving the technical problems of narrower reaction temperature interval for COS hydrolysis, low applicative material airspeed and permanent inactivation of catalyst in the event of containing O2 in a material in the prior art. The technical problems are well solved by adopting the technical scheme as follows: the method for hydrolyzing the carbonyl sulphide comprises the step of reacting materials containing carbonyl sulphide and water in the presence of catalyst, wherein the catalyst comprises the following components in percentage by weight: (a) 1-5% of alkali carbonate, alkaline-earth metallic oxide or a mixture thereof; (b) 15-25% of rear-earth oxide in total; and (c) 70-82% of alumina. The method disclosed by the invention can be applied to industrial treatment of materials containing the carbonyl sulphide.

The invention discloses an air conditioner and fan ganged control method and system and a computer readable medium. The air conditioner and fan ganged control method comprises the following steps that S1, an air conditioner receives a ganged instruction and sets up a ganged relation with a fan according to the ganged instruction; and S2, the air conditioner obtains the real-time temperature of an indoor environment, and when the absolute value delta T of the difference value between the preset target temperature and the real-time temperature is larger than or equal to a fist preset threshold value delta T1, the fan rotation speed corresponding to the delta T is obtained according to a first preset rule, the fan is controlled according to the ganged relation to be started and operate at the obtained fan rotation speed, and the fan is controlled to open a cyclic swing mode, wherein the delta T corresponding to the larger fan rotation speed is larger. According to the technical scheme, the temperature adjusting rate of the air conditioner can be improved.

The present invention relates to temperature regulating and controlling method and special apparatus suitable for miniature experiment section. When the temperature of metal body is higher or lower than the temperature the temperature control instrument sets, the temperature controlling circuit will control the conversion of power supply polarity to make the temperature of the metal body within the range around the set temperature. The apparatus includes one metal body with experiment section flow channel, semiconductor refrigerator mounted on the metal body, heat sink set on the semiconductor refrigerator, heat isolating lay to cover the metal body except the part the semiconductor refrigerator is mounted; and temperature sensor fixed inside the hole in the metal body and connected to the temperature control instrument, with the heat sink being connected electrically to the DC power supply and the temperature control instrument via the temperature control circuit.

A seat belt load limiter employs a magnetostrictive sensor to detect the elastic loading and plastic deformation of a torsion rod forming part of a seat belt retractor. A magnet and a coil are placed about or adjacent to the torsion rod. When the torsion rod undergoes elastic or plastic strain, an electrical voltage is induced in the coil which is used to detect elastic or plastic strain of the torsion rod. A vehicle safety system uses the output of the magnetostrictive sensor to inform the vehicle operator when the seat belt load limiter is in need of replacement. The output of the magnetostrictive sensor as processed by the vehicle safety system can also be used to detect a situation where the seat occupant is not restrained by the seat belt and to make an airbag deployment decision.

The invention relates to a silicon carbide linear temperature sensor, a temperature measuring method thereof and a manufacturing method thereof and belongs to the technical field of semiconductor devices. The silicon carbide linear temperature sensor comprises a P well at the top layer of a silicon carbide N-epitaxial layer, an N well with a shallower central junction depth at the top of the P well, an N-type silicon carbide ohmic contact region at the center of the N well, an Ohmic contact electrode at the upper surface of the N-type silicon carbide ohmic contact region, N-type Schottky contact electrodes at two ends of the N well and a passivation layer at the surface of a device. According to the silicon carbide linear temperature sensor, the temperature measuring method and the manufacturing method, a lateral design is adopted to obtain the silicon carbide temperature sensor based on double Schottky diode structures, on one hand, the influence of reverse saturation current on the linearity of the sensor can be eliminated, the linearity is improved, on the other hand, a linear dependence relation between diffusion resistance Rs and temperature is introduced, and the sensitivityof the device is improved. At the same time, the device structure provided by the invention is a lateral structure, compared with an existing longitudinal structure, the structure of the invention iseasy to integrate, due to the isolation effect of the P well, the crosstalk between sensor main devices can be reduced, and the feasibility of integration with N-type epitaxial power devices is increased.

The invention provides environment-friendly flame-retardant hard polyurethane foaming plastic. Polyisocyanates, polyether polyol, a foaming agent, a foam stabilizing agent, a catalyst, glycerinum and a flame retardant are taken as raw materials, wherein the flame retardant is synthesized novel halogen-free flame retardant 1-butyl-3-methylimidazole dibutyl ester ionic salt ([Bmim]DBP); the polyether polyol, the foaming agent, the foam stabilizing agent, the catalyst, the glycerinum and the flame retardant are uniformly stirred and mixed in a certain ratio at the room temperature in a high-speed dispersing machine, are further stirred and mixed uniformly with polyisocyanates added in a certain ratio, are subjected to foam molding in a mold, and are aged, so that the environment-friendly flame-retardant hard polyurethane foaming plastic can be obtained.

A method is provided for transferring control of a security module from a first entity to a second entity. The security module has a first security domain controlled by the first entity by at least one first secret control key specific to the first entity, and a second security domain, the second domain containing a private key and a certificate of a public key of a controlling authority. The method includes: receiving a request to obtain the certificate; sending the certificate; receiving data encrypted by the public key of the certificate, the data including at least one second secret control key specific to the second entity; decrypting the data; verifying the data; and if the verification is positive, replacing the at least one first secret control key by the at least one second secret control key.

The invention discloses a linkage control method and system of an air conditioner and a fan, and a computer readable medium, wherein the linkage control method of the air conditioner and the fan includes the following steps that S1, the air conditioner receives a linkage command and establishes linkage relationship with the fan according to the linkage command; S2, the air conditioner obtains a real-time temperature in a room, and when an absolute value deltaT of a difference value of a preset target temperature and the real-time temperature is larger than or equal to a first presupposed threshold value deltaT1, the fan is controlled to start and operate according to the linkage relationship. According to the technical scheme, the thermoregulation rate of the air conditioner can be improved.

The invention relates to a homo-polypropylene/carbon fiber/montmorillonite composite material and a preparation method of the homo-polypropylene/carbon fiber/montmorillonite composite material. The homo-polypropylene/carbon fiber/montmorillonite composite material is prepared from the following raw materials in parts by weight: 85 to 95 parts of homo-polypropylene, 5 to 10 parts of carbon fibers, 2 to 3 parts of organic montmorillonite, and 3 to 5 parts of foaming masterbatches, the foaming masterbatches are prepared from the following raw materials in parts by weight: 60 to 70 parts of polyethylene, 20 to 30 parts of foaming agents, 1 to 3 parts of foam stabilizers, 3 to 5 parts of nucleating agents, 0.5 to 1.5 parts of zinc oxide, 0.5 to 1 part of a titanate coupling agent NDZ-201, 3 to 5 parts of PE wax and 0.5 to 1 part of zinc stearate. According to the homo-polypropylene/carbon fiber/montmorillonite composite material disclosed by the invention, the mechanical properties are excellent, the tensile strength reaches 36.9 MPa, the impact strength reaches 55.1 kJ/m<2>, and the flexural modulus reaches 1590 MPa. The foaming material has best foaming and biggest cell density, the cell density reaches 2.3*10<7>/cm3, and the porosity of the foaming material is 17.7%.