1073results about How to "Prevent aging" patented technology

The invention discloses a building curtain wall BIM forward design method, and relates to the technical field of building curtain wall design, and the method specifically comprises the following steps: obtaining environment dynamic information of each region in real time, and respectively generating an air flow equilibrium coefficient and a thermal effect index of each region; and constructing a heat effect risk model for the generated air flow equilibrium coefficient and heat effect index of each region, generating a heat effect risk coefficient of each region, and predicting a risk level of a heat effect caused by unbalanced air flow in each region of the air layer in the double-layer curtain wall. Dividing each area of the air layer in the double-layer curtain wall into a high-risk area, a medium-risk area and a low-risk area according to the prediction result; and taking corresponding air flow optimization and heat effect control measures according to the division result of each area of the air layer in the double-layer curtain wall. The heat effect problem caused by unbalanced air flow of the double-layer curtain wall is solved, and the effects of optimizing the heat preservation performance and reducing energy consumption are achieved.

The invention discloses an acetic anhydride production waste gas neutralization treatment device and method, and relates to the technical field of waste gas neutralization treatment.The acetic anhydride production waste gas neutralization treatment device comprises a treatment tank, a gas inlet pipe is fixedly installed at the bottom of the treatment tank, gas holes are formed in the surface of the gas inlet pipe, and a gas outlet pipe is fixedly installed at the top of the treatment tank; the waste gas neutralizing device is arranged in the treatment tank, and the waste gas neutralizing device comprises a motor, a connecting pipe, a fixing frame, a water spraying pipe, a reciprocating screw rod, a threaded plate, a fixing rod, an elastic telescopic rod, an activated carbon plate, a long rod, a universal wheel and an elastic telescopic scraper plate; the reciprocating lead screw rotates to drive the elastic telescopic rod to rotate, the elastic telescopic rod rotates to drive the activated carbon plate to rotate, through rotation of the activated carbon plate, the plate face can make uniform contact with pollutants in waste gas, saturation and aging of a local area are avoided, and the adsorption efficiency of activated carbon is improved.

The invention belongs to the technical field of shoe materials, and particularly relates to a high-elasticity shoe material and a preparation process thereof. The high-elasticity shoe material comprises the following components in parts by weight: 70-80 parts of thermoplastic polyurethane elastomer; 10 to 20 parts of an ethylene-vinyl acetate copolymer; 15 to 20 parts of an ethylene-octylene copolymer; 10 to 15 parts of nitrile rubber; 8-10 parts of a composite antibacterial agent; 2-4 parts of a foaming agent; 0.6-1 part of zinc oxide; 1-2 parts of an antioxidant; 10-15 parts of a composite filler; the components are subjected to a blending foaming process to prepare the shoe material which is moderate in hardness, light in weight and high in elasticity, and the prepared shoe material also has good strength, wear resistance, yellowing resistance, antibacterial property and flame retardance.

The invention relates to the technical field of daily chemicals, in particular to multi-fermented oil and application thereof. The multi-fermented oil is prepared from Tibetan cordyceps sinensis, eurotium cristatum and saccharomycetes. The multi-fermented oil provided by the invention contains functional components and mild components, and contains rich fatty acids, antioxidant components and other substances with biological activity. A lipid structure in the fermented oil is similar to a natural sebum layer of skin, so that a protective barrier can be formed on the surface of the skin, and water loss is prevented. This is particularly beneficial to dry skin and helps the skin maintain moist and soft. And micromolecular lipid components in the fermented oil, such as unsaturated fatty acid, can more easily permeate into the deep layer of the skin, so that long-acting nourishing and moisturizing effects are provided for skin cells.

The invention discloses an oil-immersed motor cooling structure which is characterized in that an isolating ring cylinder is arranged between air gaps of a rotor core and a stator core, the outer side surface of the isolating ring cylinder is tightly attached to the inner circular surface of the stator core, and an air gap is reserved between the inner side surface of the isolating ring cylinder and the outer circular surface of the rotor core; one side of the isolating ring cylinder is in sealed connection with the non-transmission end cover, and the other side of the isolating ring cylinder is in sealed connection with the transmission end cover; the internal fluid space of the motor is divided into a stator area and a rotor area which are isolated from each other by the isolation ring cylinder. According to the hybrid cooling structure, the problems of high temperature rise due to large stator heating and low temperature rise due to small rotor heating are solved, and the balance of heating and cooling of the whole motor is ensured. On one hand, the heat dissipation capability of the motor can be enhanced, the temperature rise in the motor operation process is effectively reduced, the motor operation safety is improved, and the motor performance is improved; and on the other hand, the insulation effect of the mineral oil can effectively prevent aging of motor parts, and the service life of the motor is prolonged.

The invention provides a skin care composition with an anti-aging effect and a preparation method and application thereof, and belongs to the technical field of beauty and skincare, the composition is characterized in that retinol, a polypeptide compound, ceramide, astaxanthin and resveratrol have a synergistic effect on component combination, so that all-around anti-aging is realized, and the skin care effect is good. According to the present invention, the raw materials are respectively adopted to provide effects of collagen generation promotion, muscle contraction wrinkle solving, barrier function enhancing, free radical scavenging, melanin formation inhibition and the like, the preparation method comprises the following steps: precise temperature control, suitable stirring mode, high-precision stirrer and other advanced technologies ensure uniform mixing of the components, inert gas protection and PID temperature controller retention of the activity and the effects of the components, in the aspect of application, the composition is reasonably added into face cream, emulsion, essence and facial mask, diversified requirements are met, deep nourishing, refreshing care, efficient permeation and instant effects are respectively provided, in a word, an efficient, safe and comprehensive anti-aging scheme is provided for consumers, aging signs are improved, and the composition is wide in prospect and high in value.

The invention discloses a whitening nano-emulsion and a preparation method thereof, and relates to the technical field of cosmetics and skin care products. The whitening nano-emulsion is prepared from the following components in percentage by weight: 2.0 to 10.0 percent of an emulsifying agent, 4.0 to 10.0 percent of an emollient, 3.0 to 8.0 percent of glycerol, 3.0 to 8.0 percent of butanediol, 0.5 to 3.0 percent of nicotinamide, 1.0 to 3.0 percent of a Soulixian extract, 0.5 to 3.0 percent of ascorbyl tetraisopalmitate, 0.3 to 3.0 percent of hydrogenated lecithin, 0.1 to 2.0 percent of hydroxyethyl piperazine ethanesulfonic acid, 0.1 to 1.0 percent of SymSitive1609, 0.03 to 0.5 percent of a mulberry root extract, 0.03 to 1.0 percent of cerium oxide and the balance of water. The toothpaste is prepared from the following components in percentage by weight: 0.05 to 0.5 percent of tocopheryl acetate, 0.03 to 0.3 percent of stearyl glycyrrhetinic acid ester, 0.01 to 0.1 percent of poly gamma-sodium glutamate, 0.03 to 0.2 percent of EDTA (Ethylene Diamine Tetraacetic Acid) disodium, 0.2 to 1.0 percent of preservative, 0.01 to 0.1 percent of aromatic and the balance of water, wherein the total The prepared whitening nano-emulsion can solve the problems of excessive addition, difficult absorption and instability of active ingredients of cosmetics, can inhibit DPPH free radical activity, hydroxyl free radical activity and tyrosinase activity through the synergistic effect of all the components, achieves the effects of resisting oxidation, whitening, removing freckles, brightening skin and the like, and does not cause damage to the skin.

The utility model discloses a rubber mixing mill which comprises a mixing box, a feeding port is formed in the top of the mixing box, a platen is arranged below the mixing box, the bottom of the mixing box is communicated with a discharging barrel through a discharging pipe, the top of the platen is fixedly connected to the bottom of the discharging barrel, one side of the mixing box is fixedly connected with a shell, and the other side of the mixing box is fixedly connected with the shell. And a heating ring is mounted at the top of the inner wall of the mixing box. The utility model relates to the technical field of mixing mills, and solves the problems that the mixing time is short and the mixing efficiency is high when the existing mixing mill is used for mixing more materials through the matching among a driving gear, a driven gear, a rotating shaft, a rubber mixing roller, a rotating rod, a supporting seat, a first bevel gear, a second bevel gear, a rotating column and mixing blades. The problems that part of materials in the mixing mill are not uniformly mixed and the materials are not thoroughly mixed, so that the quality and the performance of rubber are influenced are solved.

The invention discloses a high-hardness polyurethane material and a preparation method thereof.The preparation method comprises the steps that a polyol solution and a phenylethylene solution are mixed according to the same proportion, and a prepolymer is formed; putting the prepolymer and an isocyanate solution into a reaction kettle for pre-pressing, and carrying out heating reaction at a preset temperature; in the heating process, reducing a pressure value set by the reaction kettle at a preset time interval, and reducing a heating temperature value to form a polyurethane prepolymer; mixing the polyurethane prepolymer with a mixture of melamine powder and an isocyanate solution, and uniformly mixing by stirring to obtain a polyurethane blank; and putting the polyurethane blank and the inorganic filler into a reaction kettle for secondary heating to obtain polyurethane in an initial state, and cooling the polyurethane in the initial state to obtain the high-hardness polyurethane material. The hardness, high temperature resistance and mechanical stability of the polyurethane material can be effectively improved, and the technical problem of insufficient hardness in the prior art is solved.

The invention discloses a protective photovoltaic cable, relates to the technical field of photovoltaic cables, and aims to provide a protective photovoltaic cable capable of reflecting light and preventing ultraviolet rays from damaging the cable. The protective photovoltaic cable is technically characterized by comprising a battery cell assembly, and a heat insulation assembly is arranged on the outer side of the battery cell assembly; a binding assembly for fixing the position of the heat insulation assembly is arranged on the outer side of the heat insulation assembly, the outer side of the binding assembly is wrapped with an outer polyethylene protection layer, and a reflection assembly is arranged on the outer side of the outer polyethylene protection layer. The technical effects are that infrared rays and ultraviolet rays in illumination can be efficiently reflected through the reflection assembly and the aluminum foil reflection layer, the problem that the ultraviolet rays irradiate on the cable to cause accelerated aging of the cable is avoided, and the infrared rays are reflected to greatly block heat from being transmitted to the cable, so that aging of the cable due to the influence of the ultraviolet rays is prevented; and the problem of temperature rise due to the influence of infrared rays is solved.

The invention discloses a mountainous region photovoltaic panel strong-wind-resistant swing suppression device which comprises a fixed base provided with a plurality of mounting holes, a stand column assembly with one end rotatably connected with the fixed base, a photovoltaic panel mounting frame comprising a plurality of transverse supporting beams and longitudinal supporting beams, and a windproof inhaul cable assembly comprising at least three inhaul cables. And the wind direction sensor is mounted at the top of the photovoltaic panel mounting frame. Comprising the following steps of site preparation, fixed base installation, stand column assembly installation, photovoltaic panel installation frame assembling and installation, windproof inhaul cable assembly installation, sensor and controller installation and debugging and detection. The height and the angle of the stand column assembly can be flexibly adjusted according to the actual terrain and installation requirements, and it can be ensured that the device achieves the expected strong-wind-resistant swing restraining effect through debugging and detection steps after installation.

The invention relates to the technical field of heat-resistant materials, in particular to a heat-resistant polyethylene material and a preparation method thereof, and the heat-resistant polyethylene material comprises the following raw materials: ultra-high molecular weight polyethylene, zirconium oxide-zinc aluminate spinel (ZrO2-ZnAl2O4), modified graphdiyne, an antioxidant, a heat stabilizer, a plasticizer, a flame retardant and an anti-ultraviolet agent. The ultrahigh molecular weight polyethylene, the ZrO2-ZnAl2O4 and the modified graphdiyne play a role through a synergistic effect, a polyethylene molecular chain forms a firm three-dimensional network structure in a high-temperature radiation process, and a stable matrix supporting effect is provided; the excellent chemical stability and oxidation resistance of ZrO2-ZnAl2O4 in a high-temperature environment effectively inhibit the thermal degradation reaction of polyethylene, the service life of the material is prolonged, the modified graphdiyne is beneficial to rapid heat transmission, the thermal stability of the material is improved, meanwhile, the layered structure of the material has good lubricating performance, and the service life of the material is prolonged. The modified graphdiyne and the ZrO2-ZnAl2O4 are combined to avoid heat accumulation and material aging caused by the friction effect, and the ultrahigh molecular weight crosslinked polyethylene, the ZrO2-ZnAl2O4 and the modified graphdiyne form a multi-layer protection system to jointly improve the heat stability of the material.

The present invention relates to the field of cosmetic technology, and in particular to a composition for regulating skin microecology containing a biological fermentation product and its application. The composition comprises inulin, micrococcal lysate, bifid yeast fermentation product lysate, rice fermentation product filtrate, lactobacillus / soybean milk fermentation product filtrate and water. The composition can effectively adjust the balance of skin microecology, and has excellent effects of removing wrinkles, preventing aging, and moisturizing.

The invention provides a battery cell temperature control method, system and device of an energy storage system and a medium. The method comprises the steps that the temperature value of each battery cluster and the flow value of cooling liquid in a cold plate on the corresponding side are obtained in real time; analyzing and comparing the temperature value of each battery cluster to determine the battery cluster with abnormal temperature; determining an abnormal type and an adjustment coefficient according to the temperature value of the battery cluster with the abnormal temperature; and generating a corresponding control command according to the abnormal type and the adjustment coefficient, and controlling the opening degree of a secondary flow valve in the cold plate on the corresponding side so as to adjust the temperature of the battery cluster. The heat dissipation efficiency and safety of the battery can be improved, and the service life of the battery is prolonged.

The invention relates to the technical field of generators, and discloses a generator with an excellent heat dissipation effect, which comprises a shaft core, an inner core arranged outside the shaft core, a right half shell and a left half shell which are respectively arranged on the left side and the right side of a shell, and a heat absorption sleeve fixedly arranged outside the inner core, the stator is fixedly clamped between the right half shell and the left half shell, the stator is located outside the rotor and sleeved with the heat absorption sleeve, the inner hollow arc shell comprises an initial position and a set position, and when the inner hollow arc shell is located at the initial position, the inner hollow arc shell is parallel to the central axis of the shaft core. The temperature stability of the inner core is ensured by absorbing the local stability of the heat absorption sleeve, and when the temperature of the inner core is not uniform, the heat absorption sleeve is used for receiving, meanwhile, material aging caused by local overheating is prevented, the influence of thermal stress on the whole structure is reduced, the reliability and stability of equipment are improved, the service life of the equipment is prolonged, and high-performance operation of the equipment is kept.

The invention discloses an electro-absorption modulated laser chip and a manufacturing method thereof, and relates to the technical field of semiconductor devices.The chip comprises a substrate, a modulator layer, a passive waveguide layer, a laser layer, an amplifier layer, a wrapping layer and a contact layer, the passive waveguide layer is arranged in a spacer region between the laser layer and the modulator layer in a butt-joint growth mode, the amplifier region is arranged on the other side of the modulator layer, the laser layer is arranged in the laser region on one side of the passive waveguide layer in the spacer region in a butt-joint growth mode, and the amplifier layer is arranged above the passive waveguide layer in the amplifier region. The cladding layer and the contact layer are sequentially arranged above the functional layer, a mask is used for covering a specific area in the butt-joint growth process, and the mask is removed after growth; according to the technical scheme, the active gain material of the amplifier region can be manufactured on the passive waveguide material while the manufacturing steps are simplified, the optical signal loss is reduced, and the chip saturated light output power is improved.

The invention provides an external heat compensation device, system and method for a catalytic cracking bed regenerator. The external heat compensation device (1) comprises an electric energy supply heating device (2) and a shell (3); the electric energy supply heating device (2) is composed of a plurality of electric heating pipes (4). The electric energy supply external heat compensation device is used for performing external heat compensation on the regenerated catalyst, no hydrothermal environment is generated in the external heat compensation device, and the catalyst can be prevented from being structurally inactivated even under an overheat condition, so that the catalyst consumption is reduced, and the heat balance of a catalytic cracking reaction-regeneration system is realized.

The invention relates to the field of polypropylene films, in particular to a solvent-free composite polypropylene matte film with controllable glossiness and a preparation method of the solvent-free composite polypropylene matte film, which are used for solving the problems that the light control characteristic of the existing polypropylene film is limited, the glossiness is difficult to accurately control, the environment is easy to pollute, and the requirements of different application scenes are difficult to meet. The main raw material of the solvent-free composite polypropylene matte film is the matting master batch, and the composite light control agent is added into the matting master batch, so that the glossiness can be accurately controlled, the requirements of different application occasions on the glossiness of the film are met, and the film can obtain the optimal visual and touch effects in different applications; according to the present invention, the product has characteristics of environmental protection and environmental protection, can provide diversified choices for a variety of industries so as to improve the market competitiveness, does not require the use of the organic solvent during the use process, reduces the production cost, improves the production efficiency, significantly reduces the environmental pollution, is beneficial to the green sustainable development, and achieves the multiple goals of environmental protection, energy saving and economic benefits.

The invention belongs to the technical field of laser welding, and particularly relates to laser welding equipment and a welding method thereof. Comprising a body, a connecting pipe and a laser welding gun, a winding disc is arranged at the top of the body and used for winding the connecting pipe, one end of the connecting pipe is wound on the winding disc, and the other end of the connecting pipe is connected to the side, away from the output end of the laser welding gun, of the laser welding gun; the laser welding gun is provided with a rotating and sucking assembly, and the rotating and sucking assembly is used for sucking splashing particles generated in the workpiece welding process of the laser welding gun. A cooler is arranged at the top of the laser welding gun through a bolt, and a multidirectional temperature control mechanism is arranged on the cooler; according to the device, splashing particles are sucked into the containing square box along with flowing of air by rotating the sucking assembly, it is avoided that time and energy need to be spent on cleaning bonded impurities afterwards, the working intensity of workers is reduced, the using and welding effects of the device are improved, and the limitation of the device in the using process is further reduced.

The utility model provides a swimming pool cleaning robot with a germicidal lamp. The swimming pool cleaning robot comprises a shell limiting a containing cavity, a power assembly connected with the shell, a filtering assembly, a pump assembly and the germicidal lamp, wherein the filtering assembly, the pump assembly and the germicidal lamp are contained in the shell. The shell is provided with a water inlet and a water outlet which are in fluid communication. The power assembly is used for providing power to drive the swimming pool cleaning robot to advance in a swimming pool. The filtering assembly is provided with a filtering cavity in fluid connection with the water inlet and the water outlet, and the pump assembly is used for driving water flow to enter the containing cavity from the water inlet, and the water flow is discharged from the water outlet after being filtered by the filtering assembly. And a light reflecting layer is arranged on the inner wall of the shell in a position opposite to the light emitting surface of the sterilizing lamp.

The invention relates to the technical field of BDUs, and discloses a battery pack, a circuit board comprises a board body, a loop structure and a connection point; the loop structures are arranged on the board body, each loop structure comprises at least two printing branches, and the area A of the wiring section of each printing branch meets the condition that A is larger than or equal to 1 mm < 2 > and smaller than or equal to 2 mm < 2 >; the connecting points are arranged on the printing branches, and the connecting points on the at least two printing branches of each loop structure are used for being connected with electric devices of different specifications. According to the circuit board provided by the invention, the connection among a plurality of electric devices can be realized through the printing branches, the use of wire harnesses is reduced, the assembly space is saved, the assembly process is simplified, the bad problems of wrong solution, missing connection and the like are avoided, and the realization of automatic production is facilitated; and the problems of abrasion and aging of the wire harness are avoided.

On one hand, a current difference calculation model is constructed through a data analysis unit to obtain a current difference, whether a current power distribution system leaks electricity or not is judged according to the current difference, and compared with direct electricity leakage detection in the prior art, the influence of aging and the environment is avoided, internal data are analyzed, and the detection accuracy is improved; meanwhile, the data reprocessing unit is matched with the upper limit testing and analyzing unit to obtain a limit ratio, the limit power supply quantity which can be output by the current system can be measured under layer-by-layer comparison, safety guarantee is carried out again according to the limit power supply quantity, and the problems that the accuracy of monitored data of an existing residual current monitoring mode is insufficient, and the reliability is high are solved. Meanwhile, a reprocessing function for monitoring data is lacked, on one hand, obtained information is incomplete, and on the other hand, the judgment basis accuracy needs to be improved.

The invention discloses a drug-guided anti-inflammatory enhanced mesenchymal stem cell preparation as well as a preparation method and application thereof. By constructing the medicine-loaded mesenchymal stem cell preparation, the immunosuppression capacity of the mesenchymal stem cells is improved, the angiogenesis capacity of the mesenchymal stem cells is reduced, meanwhile, by releasing the glucocorticoid medicine at a low dosage, the side effect of single administration is avoided, M2 type macrophage polarization is induced, the inflammatory state of cartilage cells is improved, and the effect of treating the cartilage cells is achieved. The curative effect of the mesenchymal stem cells on osteoarthritis is improved in multiple aspects, and the mesenchymal stem cells are proved in animal bodies. The drug-guided anti-inflammatory enhanced mesenchymal stem cell preparation provides a new thought for the treatment of osteoarthritis.

The invention relates to a composite gel for treating skin aging by using PLLA, CMC and hyaluronic acid. The composite gel is prepared from the following raw materials: 300 to 310 mg of PLLA microspheres for injection, 50 mg of CMC, 35 to 40 mg of hyaluronic acid and 5 to 8 ml of normal saline. The invention also relates to a preparation method of the composite gel for treating skin aging by using PLLA, CMC and hyaluronic acid. The PLLA microspheres and the hyaluronic acid are combined for use, respective advantages can be exerted, and the PLLA microspheres can provide lasting stimulation and promote an organism to continuously generate collagen; and hyaluronic acid can immediately improve the moisture degree and plumpness of the skin. The combination of the collagen and the collagen has the effects of integrating multiple effects, enhancing aging resistance and improving skin quality, and fundamentally solves the problem of skin aging caused by loss of collagen.

The utility model provides a photovoltaic glass curtain wall device which comprises a longitudinal supporting frame and a transverse supporting frame which are installed on the outer side of a wall body, an outer frame is connected inside the longitudinal supporting frame and the transverse supporting frame in a sliding mode, a glass assembly is fixedly connected inside the outer frame, one side of the longitudinal supporting frame is fixedly connected with a second electric lead screw, and the other side of the longitudinal supporting frame is fixedly connected with a third electric lead screw. The movable end of the second electric lead screw is in threaded connection with a cleaning sliding block, one end of the cleaning sliding block is slidably connected with a supporting plate, one end of the supporting plate is fixedly connected with an air blowing opening and a water spraying opening, one end of the supporting plate is fixedly connected with a shovel plate and a scraper, and the cleaning sliding block and one end of the supporting plate are fixedly connected with a second spring. After the outer frame moves inwards, the second electric lead screw drives the supporting plate to move downwards through the cleaning sliding block, dust and dirt are removed through water spraying and air spraying, dirt can be shoveled and water stains can be scraped through the shoveling plate and the scraping plate, timed automatic cleaning is achieved, cleaning by external workers is not needed, and the safety risk is reduced.

The invention discloses high-temperature-resistant and anti-yellowing LED (light-emitting diode) packaging glue which comprises glue A, glue B and powder C, the adhesive A comprises epoxy resin, a flexibilizer, a flatting agent, a main antioxidant, an auxiliary antioxidant, a diluent, a defoaming agent and a silane coupling agent; wherein the main antioxidant is a hindered phenol antioxidant; the auxiliary antioxidant is a phosphite ester antioxidant; the glue B comprises an anhydride curing agent and an accelerant; and the powder C comprises diffusion powder and matte powder. The hindered phenol antioxidant and the phosphite antioxidant have a synergistic effect, and the phosphite antioxidant reduces an oxidation product of the hindered phenol antioxidant, namely a benzoquinone chromophoric group, so that the color of a system is protected, and the long-term stability of the material is ensured; the heat resistance, the aging resistance, the oxidation resistance and the UV resistance of the packaging glue are improved, so that the packaging glue does not generate color change, the color of a system is protected, the long-term stability of a material is ensured, the yellowing delaying rate reaches 50% or above, and the high temperature resistance can reach 260 DEG C.

The invention belongs to the technical field of high-pressure hydrogen storage containers in the hydrogen energy storage and transportation equipment industry, and particularly relates to a self-reinforced high-pressure hydrogen storage container with an inner steel cylinder and an outer winding steel wire and a manufacturing method thereof. A self-enhancement high-pressure hydrogen storage container with an inner steel cylinder and an outer winding steel wire comprises a lining steel cylinder, a gas inlet and a gas outlet are formed in the two ends of the lining steel cylinder respectively, an enhancement layer is arranged on the outer side of a cylindrical cylinder in the middle of the lining steel cylinder, and annular anti-skid tables are arranged at the junctions of the arc tops of end openings of the outer walls of the lining steel cylinder at the two ends of the enhancement layer and the cylindrical cylinder respectively. And the reinforcing layer is formed by annularly winding a high-strength steel wire prepreg tape and curing the high-strength steel wire prepreg tape through epoxy resin. By means of the structure of the lining seamless steel cylinder and the winding steel wire reinforcing layer, the pressure bearing capacity of the container is effectively improved, the water volume of the hydrogen storage container of 103 MPa or above for the 70 MPa hydrogen refueling station is further increased, meanwhile, due to the fact that the price of high-strength steel wires is far lower than that of carbon fibers, the product manufacturing cost is reduced, and meanwhile the problem that non-metal wire winding materials are prone to aging is solved.

The utility model discloses a power semiconductor module packaging structure which comprises a bottom plate, four corners of the bottom plate are fixedly connected with supporting rods, the top ends of the supporting rods are fixedly connected with a top plate, the upper surface of the bottom plate is fixedly connected with supporting legs, and the upper ends of the supporting legs are fixedly connected with a lower connecting plate. Two pneumatic push rods are fixedly connected to the lower surface of the top plate, the telescopic ends of the two pneumatic push rods are fixedly connected with an upper connecting plate, an upper mold and a lower mold are arranged between the upper connecting plate and the lower connecting plate, cooling grooves are formed in the upper mold and the lower mold, and the upper mold is fixedly connected with the lower surface of the upper connecting plate; the lower mold is fixedly connected with the upper surface of the lower connecting plate, the upper surface of the upper connecting plate and the lower surface of the lower connecting plate are both fixedly connected with heat dissipation mechanisms, the heat dissipation mechanisms are arranged to cool epoxy resin after epoxy resin injection molding is completed so that the epoxy resin can be cooled more rapidly, the working efficiency is improved, and meanwhile heat dissipation is rapid.

The invention discloses a strong acid and alkali resistant plastic material for fume hood surface decoration and a preparation method of the strong acid and alkali resistant plastic material, belongs to the technical field of plastic material processing, and aims at solving the technical problem that in the prior art, the acid and alkali resistance and the bending modulus of a plastic material for fume hood surface decoration need to be further improved. The preparation method specifically comprises the following steps: stirring amino-modified fluorosilicone resin, paraformaldehyde and 1, 4-dioxane in a reaction kettle, dropwise adding an anacardol solution, heating the reaction kettle to 85-95 DEG C, carrying out heat preservation reaction for 6-8 hours, and carrying out post-treatment to obtain the anacardol-based benzoxazine resin. Perfluoro-modified polysiloxane benzoxazine is prepared, naphthalene-containing epoxy resin and imidazole-modified silicon carbide microspheres are compounded, in-situ catalysis synergistic curing is carried out by using filler interface imidazole, a compact organic-inorganic hybrid interpenetrating network is constructed, and the strong acid and alkali corrosion resistance and bending modulus of the material are remarkably improved.

The invention provides a PEF composite board and a preparation method, and relates to the technical field of insulation boards, the composite PEF board is formed by bonding a plurality of layers of board bodies, and comprises a base layer, the base layer is prepared from the following components in parts by weight: 58 to 60 parts of HDPE (High-Density Polyethylene), 4 to 6 parts of nano montmorillonite, 1 to 2 parts of benzoyl peroxide, 2 to 5 parts of BHT (Butylated Hydroxytoluene) heat stabilizer and antioxidant, 2 to 5 parts of maleic anhydride grafted polyethylene, 0.2 to 1 part of magnesium stearate and 0.3 to 0.8 part of epoxidized soybean oil; comprising a fireproof layer which is composed of the following components in parts by weight: 45-55 parts of HDPE and 5-15 parts of a phosphate ester environment-friendly flame retardant; comprising a thermal insulation layer and is prepared from the following components in parts by weight: 45-55 parts of HDPE, 5-10 parts of lignin fibers and 5-10 parts of a bio-based foaming agent formed by mixing sodium bicarbonate and citric acid. The invention has the beneficial effects that the mechanical strength, flame retardant property and thermal insulation effect of the PEF plate are obviously improved, the weather resistance and environmental protection property are enhanced, the optimal balance of high performance and cost effectiveness is realized, and the PEF plate is suitable for various building and industrial application environments.