106 results about "Thermal softening" patented technology

The invention discloses a multilayer co-extrusion heat-shrinkable film and a preparation method thereof, the film comprises an outer wear-resistant layer, a middle support layer and an inner functional layer, the thickness ratio of each layer is 1: 3: 1-1: 5: 1, the total thickness is 50-150 [mu] m, and the raw materials are prepared according to respective formulas. The preparation method comprises the steps of raw material preparation, melt mixing, die head extrusion, two-way stretching, water-cooling shaping, electronic crosslinking, aging treatment, heating softening and cold and hot shaping. The carbon nanotubes (CNT) and the h-BN nanosheets synergistically hinder crack propagation in the middle layer, so that the crack propagation resistance of the film is remarkably improved, the tensile strength, the thermal shrinkage rate and other properties are also optimized, compared with a traditional film, the comprehensive properties of wear resistance, high strength and high thermal shrinkage rate are achieved through interface collaborative design, meanwhile, the production cost is reduced by 20-30%, and the application prospect is wide. The method is suitable for food packaging, electronic device protection and other fields.

The invention relates to the field of precision machining detection, and discloses a hydraulic shaft sleeve machining detection system and detection device which comprises a pneumatic servo control module, a signal collecting and processing module and a thermal inversion calculation module. The pneumatic servo control module drives the overturning air cylinder to apply a composite pressure waveform containing a static reference and a periodic flutter component to the hydraulic sleeve; the signal acquisition and processing module performs frequency domain analysis on a displacement signal detected by the displacement sensor and separates average displacement and displacement amplitude; the thermal inversion calculation module calculates real-time dynamic stiffness according to the displacement amplitude, a material stiffness thermal softening model is used for reversely deducing a temperature rise value, thermal expansion and elastic deformation errors are stripped through multi-dimensional error decoupling operation, and real height data under the standard temperature and without external force are calculated. According to the invention, active excitation and frequency domain analysis technologies are utilized, so that the interference of an oil film and thermal deformation is effectively solved, and high-precision online detection and processing compensation of a thermal-state workpiece are realized.

The invention relates to the technical field of power cables, and particularly discloses a cable with a cable insulation layer and a preparation method thereof, and the cable comprises a conductor and an insulation layer wrapping the conductor. The preparation method comprises the following steps: S1, raw material pretreatment: preheating and softening the high-strength silicone rubber in a temperature interval of 120-150 DEG C; s2, a mixing procedure: adding an aluminum hydroxide flame retardant and ethylene-vinyl acetate copolymer resin into the pretreated high-strength silicone rubber; and S3, extruding and coating: applying the mixed composite material to the periphery of a conductor through an extruder, and controlling the extrusion temperature to be 140-170 DEG C. The cable can be used for power transmission in a high-temperature environment, and has the advantages that the flexibility and tear resistance are maintained in the high-temperature environment, and meanwhile, the long-term thermal stability is improved; in addition, the preparation method disclosed by the invention has the advantages of improving the compatibility of the filler and the matrix and improving the mechanical property of the cable.

The invention relates to the technical field of photovoltaic modules, and discloses a colorable PID-resistant carbon fiber photovoltaic module frame, which comprises a frame body, and is characterized in that the frame body is internally provided with a hollow structure; the honeycomb layer plate is embedded in the hollow structure of the frame body, and the honeycomb layer plate is composed of a plurality of regular hexagon honeycomb grid arrays; the interiors of the honeycomb grids are filled with the microcapsules, and repair materials capable of being oxidized and cured are packaged in the microcapsules; the water-absorbent resin is arranged in the honeycomb grid and is positioned at the front end of the microcapsule; the honeycomb lattice is of a conical structure with a narrow front part and a wide rear part and is used for guiding a repairing material to directionally flow to a crack area. According to the colorable PID-resistant carbon fiber photovoltaic module frame, the water-absorbent resin expands when encountering moisture to trigger the microcapsules to break, a released repairing material directionally flows to a crack area along the conical honeycomb grid, a high-insulation sealing layer is formed after oxidation and curing, a moisture permeation path is thoroughly blocked, the detachable shell is matched with a heat softening sealant structure, the honeycomb laminate is convenient to replace, and the service life of the frame is prolonged. And the service life is greatly prolonged.

To provide a fitting in which thermal softening of a resin frame body and deformation thereof due to load can be suppressed.SOLUTION: A fitting including a frame body and a sliding sash fitted therein in a slidable manner, wherein the frame body has a resin frame body and a protrusion that protrudes from an inner surface of the frame body in a width direction and comes into contact with the sliding sash or is positioned close in a depth direction of the frame body, and the protrusion is at least partially made of metal, or at least the protrusion among the frame body and the protrusion is at least partially made of heat-resistant resin.SELECTED DRAWING: Figure 1

The present application relates to a kind of multi-material carrying tray integrated forming method, comprising the following steps: (a) carbon fiber plate material is machined to be processed into the size and shape required, obtain the bottom plate;(b) the bottom plate is heated and softened, bury in preheated forming mold;The preheating temperature of the forming mold is 130~180 ℃;(c) using the injection head of injection molding machine, poly (carbonate) is injected into the forming mold with fiber reinforcement to adhere at the edge of the bottom plate, cooling forming to obtain the peripheral wall;(d) using another injection head of injection molding machine, TPU is injected into the forming mold, and after cooling, forming can be obtained. Thus, products meeting different performance requirements can be obtained, thereby greatly reducing the complexity of manufacturing process, improving efficiency, reducing cost, and forming large-scale batch industrialization capacity.

The invention discloses a textile polyester fiber spinneret plate machining device, relates to the technical field of milling machining, and aims to solve the technical problem of low machining precision, the textile polyester fiber spinneret plate machining device comprises a milling machine and a hole milling device arranged on the outer side of the milling machine, a guide assembly comprises an annular guide groove, and the annular guide groove is formed in the inner wall of a sleeve. The hole milling mechanism comprises a shaft head and supporting arms fixedly connected to the outer walls of the two sides of the shaft head, balls are rotationally installed at the top end and the bottom end of each supporting arm, a milling cutter is fixedly connected to the interior of the shaft head and comprises a cutting part and a friction part, the cutting part is used for milling spinneret plate micropores, and the friction part is used for friction machining of the spinneret plate micropores. And the friction part is used for heating and softening a to-be-processed part of the spinneret plate. The device has the advantages that hard and brittle materials are preheated and softened, edge breakage and cracks are avoided, the precision and smoothness of the machining position are improved, chip removal and sleeking are facilitated, the horizontal position of the milling cutter is adjusted, and the milling requirements of different micropore shapes are met.

The invention relates to the technical field of composite materials, and discloses an impact resistance-wave absorption integrated fiber reinforced composite material and a preparation method thereof.The preparation method comprises the following steps that 1, N layers of carbon fiber prepregs and M layers of wave-transparent fiber prepregs are sequentially laid from bottom to top, and laminated prepregs are obtained; 2, pre-arranging conductive fibers which are arranged in an array mode and are perpendicular to the direction of the plane where the surface of the base body is located in the plate-shaped base body to obtain a fiber carrier; 3, after the laminated prepreg is preheated and softened, the fiber carrier is implanted into the laminated prepreg under the heating and pressurizing conditions, meanwhile, curing and cooling are conducted, and then the needed composite material plate can be obtained; a carrier pre-fixing-one-step hot-pressing curing method is adopted, and the implanting process of the conductive fibers and the integral forming process of the composite material are combined into a whole; the preparation method is simple, secondary bonding or complex post-treatment is avoided, and synchronous forming and firm combination of the structural layer, the conductive fibers and the resin matrix on the microscopic scale are achieved.

The invention relates to the technical field of metal material processing, and discloses a preparation method of a copper-silver alloy for a high-strength and high-conductivity new energy wire harness, which comprises the following steps: inhibiting segregation caused by copper-silver density difference and refining grains by using a rotating traveling wave magnetic field and a high-energy ultrasonic beam through magneto-acoustic double-field coupling rheological continuous casting. And then under a cryogenic environment, special modified polysiloxane-graphene hybrid conductive gel is matched for large-strain drawing, the gel keeps semi-solid lubrication at a low temperature, and a conductive channel is established. And finally, establishing an axial temperature gradient by utilizing the temperature difference between the cryogenic state of the wire rod and the contact electrode area, and applying a unipolar electric pulse to trigger the Thomson effect. According to the process, a Thomson heat flow item is used for correcting a Joule thermal field, and electron wind power is used for driving silver atoms to be directionally separated out along high-density dislocation while overheating softening of a copper matrix is restrained. The method effectively solves the problem that the strength conductivity is inverted due to solidification segregation and traditional heat treatment, and the comprehensive performance of the copper-silver alloy is synchronously improved.

The invention relates to automobile thermal forming structural part softening equipment in the technical field of automobile accessory softening, which comprises an equipment box body, a plurality of groups of lower supporting assemblies are arranged in the equipment box body, so that the whole automobile thermal forming structural part can be heated and softened conveniently, and an upper supporting assembly is arranged at the top of each group of lower supporting assembly; the structure of the upper supporting assembly is the same as that of the lower supporting assembly, and the upper supporting assembly and the lower supporting assembly are distributed in a mirror image mode, so that local heating and softening of the automobile thermal forming structural part are facilitated. The automobile thermal forming structural part is placed on the top of the supporting part and makes multi-point contact with the supporting part, the automobile thermal forming structural part can be evenly heated and softened conveniently, and two sets of isolation parts are arranged at the top end of the supporting plate and arranged on the two sides of the supporting part respectively. According to the method, the continuity and uniformity of strength distribution on the structural part can be optimized, and the dimensional precision and shape stability of the structural part can be improved.

The utility model discloses a stripping device for a film type LNG (Liquefied Natural Gas) secondary shielding layer, which comprises a bottom plate, a connecting frame and a flame projector which are arranged on the bottom plate, a sliding rail arranged on the connecting frame, a sliding block matched on the sliding rail, a connecting plate arranged on the sliding block, and a rotating motor and a fixed plate which are connected to the connecting plate, the connecting frame is provided with a rack, a rotating shaft of the rotating motor is provided with a gear matched with the rack, the gear is meshed with the rack, the fixing plate is provided with a stripping groove used for containing a to-be-stripped piece, the to-be-stripped piece is fixed in the stripping groove, and the side edge of the stripping groove is bent outwards to form a stripping guide part. According to the glue heating and softening device, the plywood can be prevented from shifting, heating and softening of glue at the stripping position and stripping of a glass fiber layer and an aluminum foil layer are achieved by moving the plywood, the consistency of the heating and softening effects of the glue is guaranteed, and the smoothness of stripping operation and the accuracy of stripping data are guaranteed.

This invention discloses a fitting method for the Johnson-Cook constitutive model of PtW7Ir1 alloy ultrafine wire drawing, belonging to the field of numerical simulation technology for metal material processing. This invention extracts three coefficients from the JC constitutive model and obtains the true stress-strain by conducting room temperature quasi-static uniaxial tensile tests on standard PtW7Ir1 alloy specimens. Then, it solves for the yield strength A and elastic modulus of the PtW7Ir1 alloy. Using the Hollomon's rule and the JIA rule, it obtains the strain hardening modulus B and hardening exponent n. Based on the yield stress data obtained from the tensile test, it calculates the strain rate strengthening coefficient and thermal softening exponent using the least squares method to complete the fitting of the constitutive model. This invention obtains JC constitutive parameters applicable to this alloy and, by introducing the Hollomon's rule and the JIA rule, accurately predicts the true hardening behavior of the material after necking, enabling the constitutive model to more realistically reflect the mechanical response of the material under cumulative deformation in multiple drawing passes.

The utility model relates to the related technical field of concrete laminated slab processing, in particular to reinforcing steel bar straightening equipment for concrete laminated slab processing. A straightening box is arranged at the top of the rack, and a reinforcing steel bar body is arranged in the straightening box. Under the matching action of the rack, the straightening box, the reinforcing steel bar body, the feed port, the discharge port, the portal frame and the straightening mechanism, the reinforcing steel bar can be rapidly heated and softened, so that the resilience force of the reinforcing steel bar is reduced, the plasticity is increased, the straightened reinforcing steel bar is prevented from generating elastic recovery, the straightening effect of the reinforcing steel bar is improved, and the production efficiency is improved. The problems that although existing reinforcing steel bar straightening equipment for concrete laminated slab machining can straighten reinforcing steel bars, the existing reinforcing steel bar straightening equipment does not have the function of heating and softening the reinforcing steel bars, the reinforcing steel bars can generate small-amplitude springback due to elasticity recovery after being straightened, and the reinforcing steel bar straightening effect is poor are solved.

The invention discloses a prepreg tape interlayer modification and enhancement method for automatic fiber laying, and belongs to the technical field of automatic fiber laying. The prepreg tape interlayer modification and enhancement method comprises the steps of online thermal softening, plasma thermal excitation nanometer material dispersion, hot air flow auxiliary deposition and air cooling solidification. Uniform and stable deposition of uniformly dispersed nano materials on the surface of the prepreg tape is realized, and a'physical interlocking 'modified enhanced interface is constructed, so that the interlayer bonding strength of the prepreg tape is improved. The problems that in the background technology, conventional nano modification is prone to particle aggregation, uneven in dispersion and difficult to embed, and an existing modification technology is incompatible with the online high-speed production process of automatic fiber laying are solved.

The invention relates to an industrial juicer with a cleaning function for deep processing of pennisetum alopecuroides. The industrial juicer comprises a rack, and a feeding hopper, a pretreatment area and a residue-liquid separation area are arranged on the rack; the rolling feeding mechanism is used for conveying the materials into the pretreatment area in a rolling manner; the material cutting and rolling mechanism comprises a material cutting plate arranged in the pretreatment area, a material cutting blade is movably mounted on the outer side of the material cutting plate, and a material crushing compression roller is mounted on the bottom side of the material cutting blade; the thermal softening material guide mechanism is used for performing heating softening treatment on the rolled and squeezed materials and conveying the materials to the slag-liquid separation area; the juice separating device comprises a primary filter cartridge and a secondary filter cartridge, an end cover plate is fixedly connected to the top of the secondary filter cartridge, a slag outlet is formed in the end cover plate, and a material lifting auger is rotationally arranged on the end cover plate; the device further comprises a juice collecting mechanism, a residue collecting groove and a cleaning device. According to the juicer, it can be guaranteed that the juicing process is smoothly advanced, the juicing effect can be effectively improved, and cleaning operation of the juicer can be effectively facilitated.

The present application relates to the field of precision machining detection, and discloses a hydraulic shaft sleeve machining detection system and detection device, which comprises a pneumatic servo control module, a signal acquisition and processing module and a thermal inversion calculation module.The pneumatic servo control module drives the overturning cylinder to apply a composite pressure waveform comprising a static reference and a periodic jitter component to the hydraulic sleeve; the signal acquisition and processing module performs frequency domain analysis on the displacement signal detected by the displacement sensor to separate the average displacement and displacement amplitude; the thermal inversion calculation module calculates the real-time dynamic stiffness according to the displacement amplitude, inversely calculates the temperature rise value using a material stiffness thermal softening model, and separates the thermal expansion and elastic deformation error through multi-dimensional error decoupling operation to calculate the standard temperature and real height data under no external force.The present application effectively solves the oil film and thermal deformation interference by using active excitation and frequency domain analysis technology, and realizes high-precision online detection and machining compensation of the thermal workpiece.

The utility model discloses a novel bottom lining plate for a coke guide grid of a coke barrier. The novel bottom lining plate comprises a lining plate main body, square counter bore bolts, a protection assembly and an auxiliary assembly, square bolt counter bores are formed in the end face of the lining plate body at equal intervals, and the lining plate body is installed at the square bolt counter bores through cooperation of square counter bore bolts and nuts. A latticed rib plate is fixedly arranged on the back of the lining plate main body, and the protection assembly and the auxiliary assembly are arranged on the lining plate main body; the wear-resisting base plate is arranged at the front end of the lining plate body to be matched with the wear-resisting embedded plate, so that the service life of the lining plate body is prolonged, meanwhile, wear of the square counter bore bolts is reduced, the square counter bore bolts are prevented from being heated and softened through the heat-insulating cushion blocks, and the mounting stability of the lining plate body is guaranteed through heat-insulating protection of the square counter bore bolts; and the coke guide grid bottom lining plate main body is prevented from falling off when the coke guide car pushes coke.

The present application relates to the field of material mechanical property characterization, in particular to a high-temperature thermal softening variable stiffness and strength metal elastic-plastic parameter global characterization method, comprising: obtaining strain field data and temperature field data of the test piece, and tensile load data; constructing a thermal-mechanical coupling elastic-plastic constitutive model of the metal plate, and establishing a target function of temperature-related parameters to be solved under the constraint of multiple virtual fields based on the virtual work principle; accurately identifying high-temperature thermal softening elastic parameters by using elastic stage data, and then identifying anisotropic strength thermal softening plastic parameters by using composite field data of the whole loading process under variable stiffness; the present application breaks through the condition restriction of constant stiffness when characterizing thermal-mechanical coupling properties of metal materials by using existing test methods, and can realize global accurate characterization of high-temperature thermal softening and anisotropic complex elastic-plastic thermal-mechanical coupling property parameters by only one test, thereby minimizing the number of tests and simplifying the test process.

The invention discloses a resource recovery treatment device which comprises a treatment box, a first-stage crushing chamber, a magnetic separation chamber and a second-stage crushing chamber are sequentially arranged in the treatment box from top to bottom, a feeding hopper is arranged at the top of the first-stage crushing chamber, a first-stage crushing mechanism is arranged in the first-stage crushing chamber, and the first-stage crushing mechanism is provided with a heating mechanism; a magnetic separation mechanism is arranged in the magnetic separation chamber, a magnetic separation outlet is formed in the side wall of the magnetic separation chamber, a second-stage smashing mechanism is arranged in the second-stage smashing chamber, and a discharging port is formed in the bottom of the second-stage smashing chamber. The resource recovery treatment device integrates pre-crushing, heating softening, magnetic substance separation and fine crushing, realizes continuous automatic treatment of complex mixed renewable resources through a two-stage differential crushing design in combination with heating softening and high-efficiency magnetic separation technologies, remarkably improves the treatment efficiency of the renewable resources and the quality of regenerated materials, and is suitable for industrial production. And the resource recovery cost is effectively reduced.

A thermal conductive composite silicone rubber sheet includes a thermal conductive silicone rubber sheet and a thermosoftening silicone resin layer with a thickness of 0.5 to 10 μm on one side of the thermal conductive silicone rubber sheet, the thermosoftening silicone resin layer having an viscosity at 70° C. of 700 Pa·s or lower, where the thermosoftening silicone resin layer has adhesion of 0.5 N / 25 mm or higher at a normal temperature and the thermal conductive composite silicone rubber sheet has a thermal resistance lower than a value obtained by adding 0.3 cm2·K / W per one layer of one side of the thermosoftening silicone resin layer to a thermal resistance of the thermal conductive silicone rubber sheet. A thermal conductive composite silicone rubber sheet provided with an adhesive layer on one side of a thermal conductive silicone rubber sheet, makes it possible to impart adhesion without sacrificing thermal conductivity.

The application discloses a safety valve pressure calibration device, relates to the technical field of safety valve calibration, and comprises a bearing component and a calibration table, the bearing component is installed in the middle of the upper end of the calibration table, a heating component is arranged above the bearing component, a lifting component is arranged at the upper end of the calibration table, the bearing component comprises a bearing seat, a positioning groove is arranged at the upper end of the bearing seat, a limiting mechanism is arranged on the inner side of the positioning groove, the heating component comprises an isolation cover, an electromagnetic induction coil is installed on the isolation cover, an exhaust mechanism is arranged above the bearing seat, the application realizes non-contact heating simulation of high-temperature working conditions through electromagnetic induction, solves the problem of setting pressure misalignment caused by spring thermal softening, and ensures calibration stability through automatic centering clamping and safe exhaust flow guiding; integrated gas path switching realizes rapid cooling after calibration, significantly shortens the operation cycle, and improves the accuracy, safety and efficiency of high-temperature safety valve offline calibration.

The utility model relates to a spiral decoration strip processing mechanism which comprises a machine frame, a plastic strip unwinding device, a heating softening device, a cooling shaping device and a finished product winding device, and the plastic strip unwinding device, the heating softening device, the cooling shaping device and the finished product winding device are all installed on the machine frame and are sequentially arranged from front to back. The plastic strip unwinding device comprises an unwinding support, a first rotating mechanism used for driving the unwinding support to rotate, an unwinding shaft and an unwinding motor, the first rotating mechanism is installed on the rack, the rotating axis of the unwinding support is in the front-back direction, and the unwinding motor is installed on the unwinding support; the unwinding shaft is rotationally installed on the unwinding support and is in transmission connection with an output shaft of the unwinding motor. The spiral decoration strip processing mechanism can automatically finish continuous twisting and cooling shaping of decoration strips so as to process the spiral decoration strips, so that the working efficiency is improved, and the product consistency is ensured.

The invention belongs to the technical field of adhesive tape processing equipment, and particularly relates to an automatic adhesive tape cutting waste collecting device which comprises a base plate, and a heating device, an adhesive removing device, a cleaning device, a tensioning mechanism, a screwing device, a winding device and a crushing device are sequentially arranged on the base plate. The heating device is used for heating the waste materials and reducing the viscosity; the glue removing device is used for removing glue liquid on the heated waste materials; the cleaning device is used for cleaning residual glue liquid on the waste materials; the screwing device is used for screwing the waste materials; the winding device is used for winding the screwed waste materials; and the crushing device is used for crushing the rolled waste materials. According to the method, the viscosity of the waste is reduced through thermal softening, then mechanical stripping is conducted, washing and cleaning are conducted, the glue solution removal rate is ensured, the influence of residues on subsequent procedures is avoided, then the linear waste is compressed to be in a fried dough twist shape, the size is reduced, and a stress concentration point is formed in the waste to facilitate the crushing operation of a subsequent crushing device.

The utility model discloses an automatic softening machine for artificial leather, which comprises a base, the upper surface of the base is fixedly connected with a shell and a support frame, a guide roller is arranged on the side surface of the support frame, a leather body is arranged on the guide roller, the upper surface of the base is fixedly connected with a fixing plate, and a sliding chute is formed in the side surface of the fixing plate. A toothed plate is arranged on the side face of the fixing plate, the toothed plate is fixedly connected with the sliding plate, the top of the toothed plate is fixedly connected with a lifting plate, a limiting groove is formed in the surface of the lifting plate, and a second motor is fixedly installed on the side face of the lifting plate. Two surfaces of leather are heated and softened through the heating roller and the air delivery pipe, the leather softening consistency is improved, the leather softening effect is improved, the toothed plate and the lifting plate are driven by the gear to move up and down, the height of the heating roller is adjusted, and the tightness of artificial leather is adjusted.

The present invention is a thermally conductive composite silicone rubber sheet characterized by comprising a thermally conductive silicone rubber sheet and a thermally softening silicone gel layer that is disposed on one or both surfaces of the thermally conductive silicone rubber sheet, has a thickness of 5-100 μm, and has an absolute viscosity of 5-1,000 Pa·s at 70°C. The thermally conductive composite silicone rubber sheet is also characterized in that the tack force of the thermally softening silicone gel layer, as measured by a constant-pressure insertion method using a solder paste tackiness tester, is 0.098 N or more. This makes it possible to provide a thermally conductive composite silicone rubber sheet which has low thermal resistance, is capable of exhibiting tackiness by instantaneous contact, and has excellent storage properties due to a suppressed decrease in tack force during storage.

The invention discloses a design method for cooperatively screening a high-dynamic-toughness refractory high-entropy alloy based on molecular simulation. The method comprises the following steps: 1, determining candidate elements and component spaces in the refractory high-entropy alloy; 2, constructing an initial atomic model; 3, determining a generalized fault energy curve; 4, calculating heat conductivity; 5, screening components and establishing performance criteria; and 6, experimental verification. According to the method, the dynamic toughness of the refractory high-entropy alloy is predicted and screened by taking two key parameters gamma usf--a dominant deformation mechanism and k--a dominant thermal softening behavior as quantitative indexes of collaborative screening and establishing a collaborative relationship of the key parameters gamma usf--the dominant deformation mechanism and the k-the dominant thermal softening behavior; two most core physical essence influencing the dynamic toughness of the BCC structure refractory high-entropy alloy are grasped, and the spanning from'empirical design 'to'physical mechanism driven design' is realized.

This invention discloses a residue-free cleaning method for epoxy resin inside storage tanks, belonging to the field of epoxy resin treatment, comprising the following steps: Step 1, dilution treatment: uniformly spraying residual epoxy resin on the inner wall of the storage tank using a diluent with a flash point above 60℃; Step 2, steam fumigation softening: fumigating the inner wall of the storage tank with high-temperature steam for 6-10 hours; Step 3, deep alkaline decomposition: thoroughly rinsing the inner wall of the storage tank with an alkaline solution above 80℃; Step 4, water rinsing: rinsing the inner wall of the storage tank multiple times with clean water to ensure that there is no residue of diluent, alkaline solution, or epoxy resin on the inner wall of the storage tank. The residue-free cleaning method of this invention, through the sequential combination of dilution, thermal softening, alkaline decomposition, and rinsing, gradually transforms highly adhesive epoxy resin residue into a state that is easy to detach and remove, thereby improving the thoroughness of cleaning, shortening the reuse cycle of the storage tank, and reducing the risk of subsequent material contamination and storage and transportation safety hazards.

The present invention relates to the technical field of testing methods. Specifically disclosed is a method for predicting the tensile strength of a carbon fiber-reinforced epoxy resin matrix composite (CFRC) at a high temperature. The prediction method comprises: determining a pyrolysis process of a material during a heating process; determining a peak temperature at each stage; determining a temperature holding time required for a unidirectional CFRC laminate to reach a thermal equilibrium state; determining the tensile strength of the CFRC at different temperature points in a high-temperature environment; and determining a variation law and prediction method of the tensile strength of the material during the pyrolysis process. The prediction method of the present invention takes into account the influence mechanisms of resin matrix thermal softening and thermal decomposition and carbon fiber high-temperature softening on the tensile strength of CFRCs, can truly and effectively characterize the degradation process of the tensile properties of CFRCs at high temperatures, allows for macroscopic prediction of the tensile strength of CFRCs at high temperatures, and adapts to a temperature range of 20-450°C.

The application relates to the technical field of plate production, in particular to a polycarbonate plate production cooling system which comprises a workbench, a protective cover, a softening assembly, a driving assembly, an upper mold plate and a lower mold plate and the like; the workbench is connected with the protective cover; the protective cover is provided with the softening assembly which is used for heating and softening polycarbonate plates; the protective cover is provided with the driving assembly; the driving assembly is connected with the upper mold plate; the driving assembly is used for driving the upper mold plate to move up and down; the workbench is connected with the lower mold plate, and the upper mold plate faces the lower mold plate. The polycarbonate plate edges and corners are supported by the upper supporting plate and the lower supporting plate, the deformation or damage of the polycarbonate plate edges and corners is reduced, the airflow used for cooling the polycarbonate plate is reused, the airflow used for cooling the polycarbonate plate is changed into hot air, the upper mold plate and the lower mold plate are preheated by the hot air, and energy saving is facilitated.