60results about How to "High temperature resistant" patented technology

The invention discloses an interfacial film, a preparation method thereof and an application of the interfacial film in assembly of a lithium ion battery, the interfacial film comprises the following components: lithium salt, polyvinylidene fluoride and 1-butyl-2, 3-dimethyl imidazole onium chloride, the mass ratio of the lithium salt to the polyvinylidene fluoride to the 1-butyl-2, 3-dimethyl imidazole onium chloride is about 1: 0.9-1.1: 0.9-1.1, preferably about 1: 0.95-1.05: 0.95-1.05, and the mass ratio of the lithium salt to the polyvinylidene fluoride to the 1-butyl-2, 3-dimethyl imidazole onium chloride is 1: (0.9-1.1): (0.9-1.1), preferably about 1: (0.95-1.05). The weight-average molecular mass of the polyvinylidene fluoride is about 90-110 thousand g / mol, the lithium salt is lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) and / or lithium bis (fluorosulfonyl) imide (LiFSI), the purity of the lithium salt is greater than 99.9%, the polyvinylidene fluoride (PVDF) is selected as a polymer matrix, and is compounded with the ionic liquid 1-butyl-2, 3-dimethyl imidazolium chloride (BMMImCl) and the lithium salt, so that the performance of the lithium ion battery is improved. According to the present invention, the novel interfacial film is prepared, and the interfacial film has characteristics of high temperature resistance, chemical stability, excellent ion transmission characteristic, excellent lithium ion adsorption capacity, excellent performance, and wide application prospect in the lithium battery field.

This invention discloses an insulating encapsulation structure and connection method for a probe temperature sensor, relating to the field of temperature sensor technology. The insulating connection bracket has an outer insulating and thermally conductive protective layer, and contains insulating adhesive and a temperature-sensing component. The specific implementation is as follows: an insulating layer assembly, a built-in snap-fit ​​structure within the insulating connection bracket, and an eccentric cavity for housing the temperature-sensing component. A thermistor glass body is used as the insulator. In the insulation process, direct contact between the glass body and the inner wall of the bracket reduces one useless insulating layer. The cavity formed by the end of the insulating connection bracket and the insulating layer assembly houses the temperature-sensing component. The cavity contains a clearance structure for the thermistor pins and multiple layers of insulation between the pins and the conductive copper wires. A fluid insulating adhesive is used, and then the insulating connection is cured. Finally, the encapsulation is placed inside a metal shell containing insulating adhesive and cured, thus forming multiple layers of effective insulation and sufficient safe insulation thickness between the thermistor conductive pins and the metal shell.

This invention belongs to the field of fiber optic sensing and relates to a method based on WS 2 A temperature sensor based on all-fiber fluorescence intensity comprises a single-mode fiber, a three-hole grapefruit fiber, and a multimode fiber connected in sequence; the three-hole grapefruit fiber has three air holes, in which WS is deposited. 2 The multimode fiber output end is equipped with a mounting base, on which a filter is mounted. This invention utilizes WS... 2 Assembled within a three-hole optical fiber, with single-mode and multi-mode fibers fused together at both ends, this sealed structure effectively isolates the sensor from external air, preventing contact between the outside air and the two-dimensional material on the inner wall of the fiber during heating. This slows down the decomposition of transition metal sulfides, significantly improving the fluorescent sensor's ability to detect high temperatures and extending its lifespan. The sensor itself and its detection system are coupled and output via optical fiber, eliminating the need for external spatial light or optical modulation.

This invention discloses a method for preparing a composite vibration damper consisting of a high-pressure-bearing sintered metal fiber body and a metal plate, belonging to the technical field of composite vibration dampers. By controlling factors such as the diameter, porosity, and thickness of stainless steel fibers, and through high-temperature sintering and pressure forming, this invention obtains a stable, high-compressive-strength stainless steel felt sintered body (SFB). The metal plate is then combined with the SFB to fully utilize the vibration damping energy of the SFB, resulting in a high-pressure-bearing metal fiber vibration damper. This vibration damper exhibits high compressive strength and excellent vibration damping performance, and also possesses characteristics such as corrosion resistance, high-temperature resistance, machinability, and strong environmental adaptability.

This invention relates to the field of battery separator materials technology, specifically to MXene-functionalized aramid paper-based battery separators, their preparation methods, and applications. Meta-aramid paper is prepared by wet papermaking using short-cut meta-aramid fibers and precipitated fibers. MXene nanosheets are prepared by hydrofluoric acid etching. Using the meta-aramid paper as a substrate, a functional coating is constructed on the surface of the aramid paper by loading a mixture of para-aramid nanofibers and MXene through a vacuum-assisted filtration-layer-by-layer self-assembly method. The resulting functionalized separator is obtained through protonation reduction. The separator, with its three-dimensional porous protective layer constructed from para-aramid nanofibers and MXene, combines physical barrier and chemical bonding, effectively inhibiting polysulfide shuttle. Furthermore, the highly active sites of MXene can activate inert sulfur-containing substances, improving sulfur utilization. When used in assembling lithium-sulfur batteries, the separator achieves an initial discharge capacity of 1244 mAh·g at a constant current density. ‑1 The capacity retention rate is 82% after 200 cycles.

The invention relates to the technical field of metal surface treatment, in particular to a coating precursor composition, a metal coating and a preparation method and application of the coating precursor composition and the metal coating. The nano additive comprises a combination of nano silicon dioxide, nano aluminum oxide, nano magnesium oxide and nano titanium dioxide. The coating precursor composition provided by the invention comprises the silane coupling agent and the nano additive, and the metal coating prepared from the coating precursor composition has the excellent properties of high temperature resistance, difficulty in stripping, high hardness, no color, transparency and the like, can effectively resist erosion and wear of an external environment, and effectively prolongs the service life of metal.

The utility model relates to the field of lighting, and discloses an LED light source device and lighting equipment. The white ink layer is positioned on the upper surface of the substrate; mounting holes are distributed in the white ink layer; the LED chip is positioned on the upper surface of the substrate and is electrically connected with the substrate through the mounting hole; the white glue reflecting layer is positioned on the surface of the white ink layer and is positioned around the LED chip; and the fluorescent colloid is positioned on the surface of the white glue reflecting layer and covers the LED chip. The white glue reflecting layer is located on the upper surface of the white ink layer, and the white glue reflecting layer has the characteristic of high temperature resistance, is not prone to discoloration at the high temperature and ensures long-term lighting effect stability, so that a good reflecting effect can be achieved on light emitted by the LED chip, the lighting effect of the LED light source device is improved, and the service life of the LED light source device is prolonged. And the problems of color temperature dispersion and poor color consistency can be solved, and the chromaticity stability is improved.

The application relates to the technical field of mechanical parts, in particular to a manufacturing process of a high-temperature-resistant spring and the high-temperature-resistant spring, which comprises a glue dipping pool, a heating box arranged at the front end of the glue dipping pool, a high-temperature box arranged at the front of the heating box in intervals, a material conveying group arranged outside the port at the front end of the heating box and a forming device arranged in the high-temperature box. The carbon fiber bundle soaked with thermosetting resin is conveyed by the material conveying group, enters the heating box, is low-temperature heated and shaped, enters the forming device, is rotated and bent by the material pushing sleeve of the spring making group on the end face of the material pressing ring and the outer wall of the forming cylinder, forms a spiral spring structure, is heated and solidified by the high-temperature box, and finally is cut in length by the ultrasonic cutter, so that the manufactured carbon fiber spring has the high-temperature-resistant characteristic and is suitable for a high-temperature environment of thousands of degrees.

The application provides a method for improving the LPS stress resistance of broilers, which is realized by feeding a mannose oligosaccharide compound preparation prepared from enzymolysis coffee grounds. The preparation method of the mannose oligosaccharide compound preparation comprises the following steps: crushing coffee grounds, and adding a compound reagent for pretreatment; adding a compound enzyme preparation I to the mixed system after reaction, and carrying out enzymolysis for 6-8 hours under the condition of 50-60 DEG C; then adding a compound enzyme preparation II, and carrying out sufficient enzymolysis under the condition of 55-65 DEG C; after the enzymolysis is completed, a fermentation compound microbial agent is used for continuing fermentation for 6-12 hours under the condition of 30-35 DEG C, and drying is carried out; the compound enzyme preparation I comprises papain, alpha-amylase and saccharifying enzyme; the compound enzyme preparation II comprises cellulase, mannanase and glucanase; and the fermentation compound microbial agent comprises maxwell kluyver yeast and lactobacillus plantarum. The method can not only avoid drug residues caused by feeding drugs, but also realize the reuse of coffee grounds.

This utility model relates to the field of kitchenware testing technology, and in particular to a fixing device for a wireless temperature and pressure recorder for testing the energy efficiency of an electric pressure cooker. The device includes a fixing frame, which comprises an adjustable-length support leg, a position indicator circle, a vertical limiting rod, a horizontal drag ring, and an adjusting buckle. The adjustable-length support leg is disposed on the position indicator circle and is used to fix and support the fixing frame while maintaining contact with the bottom surface of the inner pot. The vertical limiting rod is detachably connected to the adjustable-length support leg. One end of the adjusting buckle is fixedly connected to the horizontal drag ring, and the other end is slidably sleeved on the vertical limiting rod, used to adjust and lock the position of the horizontal drag ring in the vertical direction. This utility model solves the problems existing in the prior art, such as the inability to fix the position of the wireless temperature and pressure recorder in the inner pot, large test result errors caused by using other wired thermocouples, low test efficiency, easy breakage of thermocouple wires, and easy impact on the sealing performance of the electric pressure cooker.

The valve comprises a valve body, a valve element and a driving assembly, a sealing cavity is formed in the valve body, an opening is formed in one end of the sealing cavity, an inner sealing face is arranged in the sealing cavity, the valve element is connected into the sealing cavity in a rotating mode, an outer sealing face is arranged on the valve element, a liquid inlet and a first liquid outlet are formed in the valve body, and a liquid passing channel is formed in the valve element. The liquid passing channel can be communicated with the liquid inlet, the liquid passing channel is provided with a containing groove, an annular sealing piece is arranged in the containing groove, a switching hole is formed in the annular sealing piece, and a contact sealing face is arranged on the annular sealing piece; the containing groove is formed in the other end of the liquid passing channel of the valve element, the annular sealing piece made of the material with the low friction coefficient is arranged in the containing groove, and the contact sealing face of the annular sealing piece and the inner sealing face of the valve element are in sealing and sliding fit, so that friction between the valve element and the valve body can be reduced, and durability is improved; the containing groove can maintain the overall shape of the annular sealing piece, and the annular sealing piece is prevented from deforming and losing efficacy due to pressure.

The application discloses a strain of Agaricus bisporus with outstanding flavor quality and high yield Agaricus bisporus ), and belongs to the technical field of edible fungi. The strain is preserved in the China General Microbiological Culture Collection Center on June 1, 2026, and the preservation number is CGMCC NO.42856. The application takes wild germplasm of Agaricus bisporus as a parent source, selects target hybridization materials through molecular markers, and then obtains Agaricus bisporus 284x290-5 with the characteristics of outstanding flavor, yield improvement and high-temperature resistance through hybridization cultivation.

The utility model relates to a boiler SNCR spray gun convenient to replace, including gun body, the front end of gun body is connected with the gun head, still include connecting piece and fixed clamp, connecting piece includes sleeve pipe, and the flange plate and circular plate connected in the both ends of sleeve pipe, the flange plate is connected with boiler wall flange, the gun body is equipped with the fixed plate matched with circular plate, the shape of fixed clamp is matched with circular plate and fixed plate, fixed clamp includes a pair of semicircle clamp of hinge connection, and is used for the lock catch device of fixed clamp opening and closing, semicircle clamp includes the face hoop board of circular arc, the side hoop board with locking hook connected in the both sides of face hoop board, locking hook is equipped with the first guide surface of arc towards the inside of side hoop board, have realized only need fixed clamp to tighten and connect circular plate and fixed plate, simultaneously, the first guide surface of locking hook extrudes circular plate, cooperates with the side hoop board of other side, extrudes fixed plate and sticks together to circular plate, need not additional force and press tightly two, satisfy the convenience demand of quick dismounting spray gun.

This utility model discloses an inner flame vortex burner. It includes a burner and large flame ejector tubes. The burner is an irregularly shaped shell with a centrally protruding annular cone shape. Large flame ejector tubes are provided on both sides and connected to it, forming a double-ejector structure. The central annular cone surface has a protruding short flame groove and a concave long flame groove. The inner ring of the central annular cone has a protruding upper flame stabilizing groove and a concave lower flame stabilizing groove. The bottom of the central annular cone has two segmented grooves and two segmented ribs. A connecting hole is provided on the outer edge, and two positioning grooves are provided at the outlet of the large flame ejector tubes. This utility model features a simple structure, strong ejection force, high heat load, high combustion thermal efficiency, material saving, quick processing, and aesthetically pleasing combustion flame.

The invention belongs to the technical field of mineral materials, and particularly relates to graphite lubricating liquid for a sliding plate brick and a preparation method of the graphite lubricating liquid. The preparation method comprises the steps that high-purity graphite is collected and subjected to superfine grinding to serve as a raw material for preparing the graphite lubricating liquid; putting the collected raw materials into a high-speed stirrer, adding water, and stirring to obtain slurry; adding an adjusting agent into the obtained slurry, and stirring to adjust the pH value; and respectively adding a film-forming agent, a defoaming agent and an anti-settling agent into the slurry with the adjusted pH value, grinding by using a sand mill, and standing for more than 24 hours to obtain the graphite lubricating liquid. The graphite lubricating liquid for the sliding plate brick prepared by the method has the characteristics of high temperature resistance, corrosion resistance, good dispersity and good lubricity, the film-forming agent and the anti-settling agent are added in the preparation process, the wettability of the graphite lubricating liquid and a sliding plate can be enhanced, meanwhile, the storage time can be prolonged, a sand mill is adopted for grinding in the preparation process, and the service life of the sliding plate brick is prolonged. The dispersity and the stability of the lubricating liquid can be improved.

The invention aims to disclose a punch-formed ultrathin metal filtering material, a process, a filter and application, and relates to the technical field of punch forming, two surfaces of a metal base material with the thickness of 0.005 mm-0. 03mm are provided with a first reference horizontal plane and a second reference horizontal plane; the first reference horizontal plane is provided with a plurality of first convex hulls which protrude out of the first reference horizontal plane and are arranged in a first array, and the top of each first convex hull is provided with a first special-shaped micropore with the aperture of 20-60 microns; the second reference horizontal plane is provided with a plurality of second convex hulls which protrude out of the second reference horizontal plane and are arranged in a second array, and the tops of the second convex hulls are provided with second special-shaped micro holes with the hole diameter ranging from 20 micrometers to 60 micrometers; the ultra-thin metal filtering material has the beneficial effects that the two surfaces of the metal base material are synchronously stamped to form the ultra-thin metal filtering material, the ultra-thin metal filtering material has a good basis of high temperature resistance and corrosion resistance, and the first convex hulls and the second convex hulls form an uneven surface structure, so that the pollutant holding capacity of the filtering material can be improved.

The utility model discloses a quartz tube sleeve for assembling a bonding wire annealing tube gas sensor, which comprises a tube body, the fixing pipe is used for being inserted into an annealing pipe opening to achieve sleeving connection of the pipe body and the annealing pipe, the limiting protrusion is used for abutting against the end face of the annealing pipe opening, the mounting base is used for mounting a gas sensor, and the limiting protrusion is arranged on the inner circumferential wall of the pipe body. One end of the limiting protrusion is connected between the fixing pipe and the installation base, the other end of the limiting protrusion is arranged in an inclined mode in the direction where the fixing pipe is located, a connecting table is arranged on the side wall of the installation base, and a containing cavity used for containing the sensor body is formed in the connecting table. The gas concentration monitoring device is simple in structure and convenient and reliable to assemble, facilitates monitoring of gas concentration and has a good use effect.

This invention discloses a method for separating fluorosilicic acid and hydrofluoric acid using an anion exchange membrane, comprising the following steps: adding a flocculant to a fluorosilicic acid-hydrofluoric acid mixture, aging it, then adding a desulfurizing agent to carry out a desulfurization reaction to obtain a mixed solution, adding the mixed solution to the feed side of an anion exchange membrane for membrane separation, and obtaining a hydrofluoric acid solution with a mass concentration of 2-30% on the clear water side after separation. This invention uses a flocculant to rapidly settle solids such as sodium fluorosilicate and potassium fluorosilicate in the fluorosilicic acid-hydrofluoric acid mixture, uses a desulfurizing agent to remove sulfuric acid, and then uses an anion exchange membrane to effectively separate fluorosilicic acid and hydrofluoric acid in the fluorosilicic acid-hydrofluoric acid mixed solution. The hydrofluoric acid separated by membrane separation has high purity and high output value, increases the utilization rate of by-product hydrofluoric acid, and reduces costs.

The application belongs to the field of aero-engine gas path sealing, and discloses a gradient-structure double-ytterbium silicate high-temperature seal coating and application. The seal coating comprises a barrier layer, a transition layer and an abradable surface layer which are sequentially sprayed on a to-be-sprayed base body along the thickness direction of the seal coating; the porosity of the barrier layer is 1-9%; the porosity of the transition layer is 9-18%; the porosity of the abradable surface layer is 18-30%; and the spraying feed powder of the barrier layer, the transition layer and the abradable surface layer is Yb2Si2O7-based powder. The coating has the characteristics of gradient distribution of porosity, high-temperature resistance, CMAS corrosion resistance, moderate hardness and high bonding strength.

The utility model relates to an anti-falling silica gel safety belt for an endoscope diagnosis and treatment bed, which is characterized by comprising the endoscope diagnosis and treatment bed and a silica gel safety belt which is arranged on the endoscope diagnosis and treatment bed and used for tightening a patient lying on the endoscope diagnosis and treatment bed, and the width of the silica gel safety belt is smaller than that of the endoscope diagnosis and treatment bed. Connecting buckles used for being fixedly connected with the two side edges of the endoscope diagnosis and treatment bed are arranged on the two opposite side edges of the silica gel safety belt, an opening right facing the abdomen of a patient lying on the endoscope diagnosis and treatment bed is formed in the center of the silica gel safety belt, and a shielding silica gel sheet capable of covering the opening is connected to the edge of the opening. The rubber safety belt has the advantages of being good in flexibility, not prone to deformation, resistant to high temperature, easy to clean, long in service life, good in elasticity and the like, and therefore stability and safety of a patient on the endoscope diagnosis and treatment bed can be improved, and the condition that the patient slides and falls off the bed is avoided. In addition, the opening is formed in the middle of the silica gel safety belt, a nurse can stretch out the hand to penetrate through the opening to press the belly of a patient in the enteroscopy process, and therefore a doctor is helped to better promote enteroscopy.

The invention belongs to the technical field of oil exploitation, and particularly relates to a dry powder thickening agent for fracturing as well as a preparation method and application thereof. The thickening agent comprises the following components: (a) 1-vinyl-2-pyrrolidone; (b) a di [2-(methacryloyloxy) ethyl] phosphate ester; (c) 2-(perfluorohexyl) ethyl methacrylate; (d) 4, 4 '-diaminostilbene-2, 2'-disulfonic acid; (e) an initiator; based on 1 mole part of 1-vinyl-2-pyrrolidone, the dosages of the di [2-(methacryloyloxy) ethyl] phosphate ester, the 2-(perfluorohexyl) ethyl methacrylate and the 4, 4 '-diaminostilbene-2, 2'-disulfonic acid are 0.05 to 0.1 mole part, 0.1 to 1 mole part and 0.2 to 0.5 mole part respectively, and the dosages of the di [2-(methacryloyloxy) ethyl] phosphate ester, the 2-(perfluorohexyl) ethyl methacrylate and the 4, 4 '-diaminostilbene-2, 2'-disulfonic acid are respectively 0.05 to 0.1 mole part, 0.1 to 1 mole part and 0.2 to 0.5 mole part. The thickening agent has the advantages of high apparent viscosity, high shear resistance, temperature resistance and high resistance reduction rate, and the resistance reduction rate reaches 70% or above.

The utility model relates to a cable, in particular to a high-power low-loss radio frequency cable for a chariot radar. The utility model aims to provide the high-power low-loss radio frequency cable for the chariot radar, and the cable has the functions of low attenuation, high power and external electromagnetic interference resistance, and has the characteristics of light weight and high flexibility. According to the technical scheme, the high-power low-loss radio frequency cable for the chariot radar is characterized by comprising a cable core, an inner shielding layer, a middle layer, an outer shielding layer and an outer protection layer, the cable core comprises a conductor, and a first insulating layer, a second insulating layer and a third insulating layer which sequentially wrap the conductor from inside to outside.

The utility model discloses a booster-level flame-retardant low-intermodulation feeder line, and relates to the technical field of cables. The booster-level flame-retardant low-intermodulation feeder line comprises an inner conductor, an insulating layer, an outer conductor and a sheath which are coaxially arranged from inside to outside, the outer conductor is a spiral corrugated metal tube, the insulating layer is made of low-density polytetrafluoroethylene with a fibrous microporous structure, and the sheath is made of booster-level flame-retardant fluorinated ethylene propylene; the booster-level flame-retardant low-intermodulation feeder line provided by the utility model has the characteristics of high temperature resistance, high flame retardance, high shielding, low loss, low passive intermodulation and super-flexible bending, is suitable for booster-level cables or cable assemblies of a UL system, and is particularly suitable for interlayers of ceilings and high-flame-retardant safe application occasions of super-flexible wiring connection.

The high-temperature-resistant ceramic composite thermocouple protective sleeve comprises a protective tube body, the protective tube body comprises a protective tube outer layer, a protective tube middle layer and a protective tube inner layer which are sequentially arranged from outside to inside, and the protective tube outer layer is formed by compounding a mullite ceramic layer and a high-temperature-resistant anti-oxidation coating coated on the mullite ceramic layer. The outer surface of the non-measuring end of the protective tube outer layer is further provided with a wear-resistant protrusion, the inner wall of the protective tube inner layer is provided with a spiral groove, the bottom end of the protective tube inner layer is in threaded connection with a sealing end cover, and the sealing end cover and the bottom end of the protective tube body are fixedly sealed through high-temperature-resistant sealant. The protective sleeve solves the problems that an existing protective sleeve is easy to damage in a high-temperature environment, low in heat conduction efficiency and the like through the optimal design of the structure and the material.

The utility model relates to the technical field of flow guide plate provides a car radiator flow guide structure, including flow guide plate, the edge position department of flow guide plate inside is provided with mounting hole, the edge position department of flow guide plate is fixed with flexible lip, the surface of flow guide plate is provided with the turbulence structure, the inside of flow guide plate is provided with the protection structure. The utility model discloses is provided with turbulence structure, through horizontal convex strip and longitudinal convex strip perpendicular each other and presents equidistant distribution, forms the regular grid structure on the flow guide plate surface. Further can play the effective segmentation and guiding effect to the airflow, makes the airflow more evenly cover radiator surface, promotes the evenness of whole heat dissipation, and through the circular convex point and the recess, can further produce the turbulence to the airflow, makes the airflow form tiny vortex. Further enhanced the heat exchange efficiency between the airflow and radiator, help radiator to dissipate heat more quickly.

The utility model relates to a flame-retardant waterproof multi-horn module sound box, the flame-retardant waterproof multi-horn module sound box comprises an outer shell device, a mounting panel and a sounding device, the outer shell comprises a peripheral side shell unit, a bottom shell unit and a vibration cavity, the peripheral side shell unit and the bottom shell unit are integrally connected, the vibration cavity is formed in the peripheral side shell unit and the bottom shell unit, the peripheral side shell unit and the bottom shell unit are made of acrylonitrile-butadiene-styrene copolymer, and the mounting panel is fixed to the outer shell device. And the sound production device is mounted on the mounting panel and is accommodated in the vibration cavity.

The present application relates to a kind of microemulsified acid and its application, wherein the microemulsified acid is formed by the microemulsion containing acid droplets in oil formed by including oleic acid, main surfactant and cosurfactant.

The utility model discloses a kind of crude tin smelting heat preservation devices, it includes: cover body, to cover container to cooperate container to form heat preservation space, the inner side edge of the cover body is equipped with the sealing strip of sealing container mouth, the top side of the cover body is equipped with sliding hole;Reference ruler rod, the reference ruler rod is vertically fixed in the top side of the cover body and is arranged close to the sliding hole;Floating ball liquid level indicating component, the floating ball liquid level indicating component sliding connection the sliding hole, the floating ball liquid level indicating component is based on the up-and-down floating of container interior liquid, the floating ball liquid level indicating component cooperates the reference ruler rod and indicates container interior liquid level information, the utility model structure is simple, use is safe and convenient, can monitor the liquid level state of container interior metal liquid in real time, reduce uncovering heat loss.

This utility model relates to the field of packaging material technology and discloses an internally reinforced waterproof outer box, including a base plate. A limiting groove is formed on the top of the base plate, and a box assembly is inserted into the inner side of the limiting groove. A waterproof layer is provided on the outer side of the box assembly. Handles are provided on the left and right sides of the box assembly. A limiting block is fixedly installed on the top of the base plate, and a base is inserted into the top of the limiting block. A limiting groove is formed on the bottom of the base, and an mounting block is fixedly installed on the top of the base. A limiting groove is formed on the top of the mounting block, and a reinforcing rod is inserted into the inner side of the limiting groove. This internally reinforced waterproof outer box, by setting the reinforcing rod, ensures that the box lid abuts against the reinforcing rod during installation, thereby improving the vertical compressive strength and stability of the box assembly. The insertion relationship between the box lid, the box assembly, and the reinforcing rod prevents the box lid from easily detaching due to external force.

The invention provides an environment-friendly tensile high-temperature-resistant PVC (polyvinyl chloride) plate and a preparation method thereof. The PVC board is prepared from the following raw materials in parts by weight: 50-70 parts of polyvinyl chloride resin, 15-25 parts of chlorinated polyvinyl chloride, 6-13 parts of a fluorine-silicon synergistic cross-linking agent, 8-15 parts of a reactive core-shell compatibilizer, 10-20 parts of an environment-friendly ester plasticizer, 4-8 parts of a lubricant, 0.5-2.0 parts of a composite antioxidant and 10-25 parts of active inorganic filler. The PVC plate disclosed by the invention has comprehensive properties of environmental protection, tensile strength and high temperature resistance.