150 results about "Foam polyurethanes" patented technology

The invention discloses a hydraulic oil cylinder with high buffering performance, and relates to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder comprises a reciprocating motion assembly, and the reciprocating motion assembly is used for driving a piston rod to do reciprocating rectilinear motion. During use, when a sealing piston is about to move to a stroke terminal, a buffer ring generates thrust on an annular plate, so that two nitrile rubber pads are sunken, meanwhile, a reset spring is extruded and contracted, and under the cooperation of the reset spring and the nitrile rubber pads, the sealing piston is preliminarily buffered, and in addition, a connecting rod pushes a buffer plate to move in an arc-shaped cover; the piston rod body is filled with hydraulic oil and gradually extrudes polyurethane foam, the polyurethane foam has good buffering performance, the filled hydraulic oil generates viscous resistance, the extruded hydraulic oil can enter the buffering cavity through the oil inlet cavity, secondary buffering is conducted on the sealing piston under the cooperation of the polyurethane foam and the filled hydraulic oil, the movement speed of the piston rod body is gradually reduced, and the sealing effect is improved. And stable speed reduction and stopping are realized.

The invention relates to the technical field of polyurethane foam, and discloses fireproof flame-retardant foaming polyurethane and a preparation method thereof.The foaming polyurethane comprises a component A and a component B. The component A comprises, by weight, 100 parts of polyether polyol, 25-50 parts of a flame-retardant chain extender and the like; and the component B is 62-86 parts by weight of an isocyanate compound. The flame-retardant chain extender contains a plurality of polymerization sites, so that the crosslinking density of a polyurethane molecular chain is improved, a stable crosslinking network is formed, and meanwhile, the flame-retardant chain extender contains a siloxane structural unit with structural stability, so that the foamed polyurethane has higher compression strength. The flame-retardant chain extender contains a phosphate flame-retardant group, and forms a phosphorus-silicon flame-retardant system with a siloxane structure, so that the combustion heat release rate peak value, the total heat release amount and the total smoke release amount of foam are reduced, and the flame-retardant chain extender has good fireproof and flame-retardant properties.

The invention belongs to the technical field of chemical engineering and medicines, and particularly relates to polyether polyol of high-molecular-weight sucrose and a synthesis method of the polyether polyol. The average molecular weight of the sucrose polyether polyol is 5000-10000, adding an initiator, namely a mixture consisting of sucrose, small molecular alcohol and water, and an alkali metal catalyst into a reactor, heating, and introducing epoxide to carry out polymerization reaction; preserving heat, curing, heating and dehydrating; introducing epoxide for polymerization reaction, and adding water and an adsorbent for refining to obtain a refined polyether polyol stub bar; the preparation method comprises the following steps: adding a refined polyether polyol material head, DMC and an acidic material into a container, heating for dehydration, introducing epoxide for polymerization reaction, and adding water and an adsorbent for refining to obtain the polyether polyol of high molecular weight cane sugar. The sucrose polyether with the ultra-high molecular weight can be synthesized, is narrow in molecular weight distribution, high in functionality and stable in storage, and is applied to the fields of semi-rigid foam polyurethane, polyurethane elastomers and the like, or applied to micromolecule inclusion, recognition and slow release in the fields of medicines and foods.

The invention relates to the field of new energy batteries, in particular to a negative electrode current collector and a preparation method thereof, a pole piece and a battery, and the preparation method comprises the following steps: preparing a carbon nanotube with a hydroxyl group on the surface; mixing a carbon nanotube with hydroxyl on the surface, an isocyanate raw material, diol, water and a second organic solvent, and carrying out heating reflux treatment to obtain a third product; mixing the third product, a polytetrahydrofuran raw material, a second organic solvent and a second ammonium salt, and carrying out a polymerization reaction to obtain a precipitate; carrying out drying treatment on the precipitate, so as to obtain foam polyurethane modified by the carbon nano tube; and taking the foam polyurethane modified by the carbon nano tube as a working electrode, carrying out deposition reaction on the working electrode to obtain a base material with a metal layer deposited on the surface, and washing and drying the base material with the metal layer deposited on the surface. The negative electrode current collector lithium metal battery provided by the invention has relatively large energy density, relatively small battery internal resistance, relatively strong cycle performance and relatively low safety risk.

The invention relates to high-strength all-water-blown polyurethane foam and a preparation method thereof. The high-strength all-water-blown polyurethane foam comprises the following components in parts by weight: a polyol composite material: 100 parts of polyether polyol, 2-8 parts of water, 0.5-3 parts of an amine catalyst, 0.2-2 parts of a gel catalyst, 1-5 parts of an organosilicon surfactant, 3-8 parts of a composite filler and 0-10 parts of an auxiliary agent; wherein the composite filler is formed by coating the surfaces of glass beads with porous nano silicon dioxide; the isocyanate material is an MDI (Diphenyl Diisocyanate) or TDI (Toluene Diisocyanate) prepolymer, and the isocyanate index of the MDI or TDI prepolymer is 100 to 120 percent. The surface of the glass bead is coated with a nano silicon dioxide porous shell layer in situ to form a unique'hard core-soft shell 'gradient interface structure, so that the interface bonding force between the filler and a polyurethane matrix is improved, stress transfer is optimized, and the foam material is endowed with excellent comprehensive mechanical properties, especially compressive strength and structural stability.

The invention discloses a polyurethane elastic foam material and application thereof. The polyurethane elastic foaming material is prepared from a polyurethane elastomer through a supercritical foaming method. The hard segment content of the polyurethane elastomer is 15 to 55 weight percent, preferably 20 to 50 weight percent; the crosslinking density of the polyurethane elastomer is 3.5 * 10 <-5 >-2 * 10 <-4 > mol / g. According to the invention, the raw material end polyurethane elastomer is controlled to simultaneously meet the requirements of certain hard segment content and crosslinking density, the supercritical foaming polyurethane elastic foaming material with different hardness can be obtained, and meanwhile, the product has the advantages of low density, high resilience and high splitting layer tearing strength, and can be widely applied to the fields of shoe materials, furniture, automobiles and the like.

The invention discloses p-aminophenol polyether polyol, a preparation method of the p-aminophenol polyether polyol, and application of the p-aminophenol polyether polyol in an all-water foaming polyurethane open-cell system. The structure of the p-aminophenol polyether polyol is shown as follows: # imgabs0 # n is 5-10, and m is 1-5. The p-aminophenol polyether polyol contains benzene rings, has good compatibility with high-molecular polyether and a flame retardant TCPP, contains ether bonds, and has good compatibility with water. Meanwhile, the benzene ring structure has certain rigidity, and certain strength can be provided for all-water low-density polyurethane open-cell foam. The p-aminophenol polyether polyol can be used as main polyether of an all-water foaming polyurethane open-cell system, and compared with a traditional all-water foaming polyurethane open-cell system, the p-aminophenol polyether polyol has the advantages of being good in compatibility, high in latitude, high in compression strength, low in cost and the like.

The utility model discloses a plate type heat insulation structure for a low-temperature storage tank, the plate type heat insulation structure comprises a plurality of heat insulation pieces which are adjacently lapped, each heat insulation piece comprises a positioning rod used for being fixed on the low-temperature storage tank, and one end of the positioning rod far away from the low-temperature storage tank is provided with a positioning plate; a sliding layer is arranged at the position, corresponding to the positioning plate, of the first heat insulation plate, and the sliding layer makes contact with the surface of the positioning plate and can slide relative to the positioning plate; the second heat insulation plate is arranged on the side, away from the low-temperature storage tank, of the first heat insulation plate; a trapezoid inner groove is formed between every two adjacent second heat insulation plates, the trapezoid inner grooves are filled with foaming polyurethane foam, and the space between every two adjacent first heat insulation plates is filled with an elastic compensation layer. The heat insulation structure is not prone to cracking when the low-temperature storage tank expands with heat and contracts with cold.

The invention discloses a supercritical carbon dioxide thermosetting foaming polyurethane foam preparation method, which comprises: 1, preparing a polyurethane prepolymer: adding 20-80 parts by mass of a bifunctional polyol and 80-20 parts by mass of a trifunctional polyol into a reaction kettle, and carrying out vacuum dehydration at a temperature of 60-90 DEG C for 30-90 min; the addition amount of the isocyanate is 40%-200% more than that of the isocyanate group relative to the polyol, after the slurry continues to react for 2-5 hours at the temperature of 60-90 DEG C, an end-capping reagent is added, and the slurry continues to react for 1-3 hours. 2, mixing the materials, namely mixing the polyurethane prepolymer with 1, 4-butanediamine, and uniformly stirring; and 3, preparing the supercritical carbon dioxide foam. The preparation method has the beneficial effects that the foam prepared by the method is uniform and stable in foam hole size, and the performance requirements of high strength, abrasion resistance, high temperature resistance and corrosion resistance can also be met.

The invention discloses an underground compressed air energy storage waterproof shock insulation integrated structure and a construction method thereof.The structure is arranged in a preset excavation face area and comprises a waterproof shock insulation layer, a lining layer, an isolation layer and a sealing layer which are annularly arranged from outside to inside; the waterproof shock insulation layer is attached to the inner wall of excavation surrounding rock of an excavation face and is formed by spraying a rigid foam polyurethane material. The lining layer is formed by pouring a steel bar bracket and a fiber concrete material, and the fiber concrete material comprises modified polypropylene crude fibers and polymer fine fibers in a preset mass ratio; the isolation layer is formed by spraying an asphalt material on the surface of the lining layer; and the sealing layer is formed by spraying a high polymer material on the surface of the isolating layer. The invention aims to effectively enhance the stability and durability of the underground compressed air energy storage waterproof shock insulation integrated structure.

The invention discloses plant waste-based module soil for facade planting, and belongs to the technical field of biomass composite materials, the plant waste-based module soil comprises foaming polyurethane, an antibacterial agent and plant waste; the foamed polyurethane is prepared from a polyol component and an isocyanate component; the antibacterial agent is obtained by carrying out grafting reaction on epoxy quaternary ammonium salt and polyethyleneimine. According to the plant waste-based module soil, foaming polyurethane, an antibacterial agent and plant waste serve as raw materials, a light foaming material of a three-dimensional net structure is formed, the material contains a large number of organic substances and has the performance of being high in water absorption, high in water retention rate and the like, and the plant waste-based module soil is endowed with certain antibacterial property by adding the antibacterial agent; under the condition that the good antibacterial effect is guaranteed, the water absorption and water retention effects of the plant waste-based module soil are improved, and the plant waste-based module soil can be used as an excellent three-dimensional greening integral culture medium.

The present invention discloses a hydraulic cylinder with high buffering performance, which relates to the technical field of hydraulic cylinders and includes a reciprocating moving component, wherein the reciprocating moving component is used to drive the piston rod to move back and forth linearly. When the present invention is used, when the sealing piston is about to move to the end of the stroke, the buffer ring generates a thrust on the annular plate, causing the two nitrile rubber pads to be concave, and at the same time the return spring is squeezed and contracted. With the cooperation of the return spring and the nitrile rubber pad, the sealing piston is initially buffered. In addition, the connecting rod pushes the buffer plate to move inside the arc cover and gradually squeezes the polyurethane foam. The polyurethane foam has good buffering performance. The filled hydraulic oil generates viscous resistance. The squeezed hydraulic oil will enter the buffer chamber through the oil inlet chamber. With the cooperation of the polyurethane foam and the filled hydraulic oil, the sealing piston is buffered for the second time, so that the movement speed of the piston rod body is gradually reduced, and smooth deceleration and stopping are achieved.

The invention discloses a steam thermal insulation pipe which comprises a steam inner pipe, an inner-layer thermal insulation sleeve and an outer pipe, the steam inner pipe is coaxially sleeved with the inner-layer thermal insulation sleeve, and the space between the inner-layer thermal insulation sleeve and the outer pipe is filled with polyurethane foaming materials, so that a polyurethane foaming thermal insulation layer is formed between the inner-layer thermal insulation sleeve and the outer pipe; a plurality of temperature locking separation supporting rings distributed at equal intervals are coaxially arranged in the polyurethane foaming heat preservation layer, the temperature locking separation supporting rings are coaxially supported between the inner-layer heat preservation sleeve and the outer pipe, and the polyurethane foaming heat preservation layer is divided into a plurality of independent sections of foaming polyurethane heat preservation layers through the temperature locking separation supporting rings. And the problem of large-volume holes is avoided through step-by-step filling.

The invention provides a method for efficiently preparing regenerated polyether polyol by using a waste polyurethane material and polyurethane foam prepared from the waste polyurethane material, the method comprises the following steps: 1) crushing waste polyurethane foam, adding an alcoholysis agent and a catalyst, and carrying out a closed reaction in an inert gas atmosphere to obtain a mixed product; and 2) firstly adding a neutralizer into the mixed product to remove amines and urea, then adding an organic extractant, and extracting and separating to obtain the regenerated polyether polyol. The polyether polyol prepared by the method disclosed by the invention can be further used for synthesizing a rigid foam polyurethane material, demolding can be obviously improved, and the space for recycling waste foam is expanded.

The invention belongs to the technical field of foaming polyurethane, and provides a microsphere foaming polyurethane material, a base plate and a preparation method and application of the base plate, raw materials are prepared from a polyol component and an isocyanate component according to the proportion that the isocyanate index is 1.05-1.15; wherein the polyol component is prepared from the following components in parts by mass: 60 to 65 parts of polytetrahydrofuran polyol, 10 to 15 parts of poly trimethylene ether glycol, 6 to 8 parts of polypropylene oxide polyol A, 6 to 10 parts of polypropylene oxide polyol B, 4 to 6 parts of 1, 4-butanediol, 0.5 to 1.5 parts of trimethylolpropane, 0.3 to 0.5 part of a catalyst, 0.8 to 1.5 parts of a foam stabilizer, 0.5 to 0.7 part of a dispersing agent EFKA-4040 and 0.1 to 0.3 part of polyether modified polysiloxane BYK-333; 0.4 to 0.6 part of expansion microspheres and 0.1 to 0.3 part of water. According to the technical scheme, the problem that a polyurethane material in the prior art cannot have low compression set and excellent fatigue resistance at the same time is solved.

The utility model belongs to the technical field of waterproof board integrated fixing, and particularly relates to a rigid foam polyurethane and waterproof board integrated fixing structure and a construction tool thereof, and the rigid foam polyurethane and waterproof board integrated fixing structure comprises a waterproof board laid on the inner wall face of a tunnel; the I-shaped fixing clamp is arranged on the surface of the waterproof plate and used for controlling the spraying thickness of the rigid foam polyurethane layer; and the rigid foam polyurethane layer is sprayed on the surface of the waterproof plate and covers the I-shaped fixing clamp. The utility model has the advantages that the plastic I-shaped fixing clamp is welded on the outer side of the waterproof plate at the position of the hot melting gasket, and the adhesive force of the hot melting gasket shoot nail is fully utilized, so that the comprehensive bonding of the I-shaped fixing clamp, the rigid foam polyurethane and the waterproof plate is ensured, and the spraying thickness of the heat insulation layer is controlled by utilizing the height of the I-shaped fixing clamp; the void rate of the second lining is greatly reduced, the water temperature behind the lining in winter is kept stable, and the freeze injury prevention and control requirements are completely met.

The utility model relates to the technical field of foaming process, and provides a foaming mold which is used for forming polyurethane foam, a through hole is formed in the polyurethane foam, and the foaming mold comprises a fixed mold assembly, a fixed mold assembly and a movable mold assembly, the movable mold assembly movably abuts against the fixed mold assembly, a product cavity is formed by the movable mold assembly and the fixed mold assembly, and a second forming column is arranged on the movable mold assembly; one end of the first forming column abuts against one end of the second forming column and is used for forming a through hole; the abutting ends of the first forming column and / or the second forming column are provided with the hollowed-out parts, in the process of injecting a foaming agent and a base material, a mixture can flow into the hollowed-out parts, after forming, the mixture in the hollowed-out parts is separated from a product, and in the process of injecting the foaming agent and the base material next time, the mixture in the hollowed-out parts is left to play a role in soft sealing. Therefore, no flash is formed on the through hole after the product is formed, and an additional flash removing process does not need to be added, so that the production cost is reduced, and the working efficiency is improved at the same time.

The application discloses a kind of A2 grade hard foam polyurethane insulation board continuous processing equipment and its processing technology, belong to thermal insulation material processing technical field.Processing equipment includes polyurethane black material conveying device, polyurethane white material conveying device, high-pressure mixer, inorganic material conveying device, low-pressure mixer and pouring gun head, the output end of polyurethane black material conveying device and polyurethane white material conveying device are all communicated with the input end of high-pressure mixer, the output end of high-pressure mixer and inorganic material conveying device are all communicated with the input end of low-pressure mixer, the output end of low-pressure mixer is connected with the input end of pouring gun head, pouring gun head is installed on distributor, the upper side of pouring gun head is provided with upper coiled material, the lower side of pouring gun head is provided with lower coiled material.The A2 grade hard foam polyurethane insulation board continuous processing equipment and its processing technology of the application can solve the problem of inorganic filler settlement in pipeline after production stops, causing pipeline blockage.

The utility model belongs to the technical field of foaming, and particularly relates to a polyurethane foaming experiment device which comprises a foaming box, a base, a mixing barrel, a stirring rod and a monitoring system, the foaming box is of an open structure, and a top support is arranged at the opening and used for foaming polyurethane foam materials; the base is fixedly arranged on a top support of the foaming box and used for containing and heating foam materials. The mixing barrel is arranged in the base in a lifting manner and is used for adding different soaking materials; the stirring rod is nested in the material mixing barrel, and when the material mixing barrel rises, the stirring rod stirs the foam materials in the base; and the monitoring system is used for measuring various data in the polyurethane foaming process in real time. The polyurethane foaming experimental device disclosed by the utility model integrates batching, mixing, heating, injecting and foaming, is simple and convenient to operate, and can be used for measuring multiple items of data in the foaming process of foam materials.

The utility model discloses an indoor ski field racing track conversion construction structure which comprises a temporary conversion node, the temporary conversion node comprises a profile steel stand column, a flange is connected to the top of the profile steel stand column through a pin shaft, and a reinforced concrete beam column and a profile steel concrete beam column top are fixedly connected to the bottom of the profile steel stand column. The outer wall of the reinforced concrete beam column is fixedly connected with a rock wool composite board; the lower half part of the temporary transfer node is embedded in the snowway structural layer, the outer wall of the temporary transfer node is coated with a heat preservation layer, the upper side of the heat preservation layer is fixedly connected with a second leveling layer, and a mounting gap is formed between the upper half part of the temporary transfer node and the snowway structural layer at intervals; a waterproof layer and a protective layer are fixedly connected between the installation gap and the heat preservation layer, and foaming polyurethane is poured into an inner cavity of the profile steel stand column. The problem that when an indoor ski field has the requirement of irregularly holding sports events, a temporary structure conversion node needs to be reserved on a slide way, but a structure meeting the requirement does not exist at present is solved.

The application discloses a kind of overburden separation zone reinforcement method of deformation sensitive structure goaf, including determining the boundary size and vertical height of overburden separation zone of goaf;Determine the boundary of blasting treatment of overburden separation zone of goaf;Design the amount of directional blasting explosive and the distance between explosive and the top of overburden separation zone, so that the rock and soil around explosive on the boundary of deformation sensitive structure foundation influence boundary is formed by directional blasting Throw pile;After the hole of hole drilling along the original blasthole distribution boundary to the original overburden separation zone bottom elevation and inject water reaction foaming polyurethane to form flow-plastic viscous liquid, flow-plastic viscous liquid rapidly diffuses along the upper and lower boundary of overburden separation zone and the interstice between original broken overburden separation zone accumulation block and forms blocking boundary;Deep grouting method is used to reinforce the cavity in blocking area.This method aims to reduce the disturbance of blasting on the upper soil layer and deformation sensitive structure, reduce the consumption of slurry, save engineering cost, and improve the treatment effect of goaf site.

The invention relates to the technical field of cable manufacturing, and discloses a tensile extrusion-resistant watertight cable and a preparation method thereof. The method comprises the following steps: (1) placing a conductor in a tubular strander, and carrying out gluing treatment and stranding treatment to obtain an intermediate I; (2) performing insulation extrusion treatment on the intermediate I to obtain an intermediate II; (3) carrying out stranded wire core assembly processing on the intermediate II to obtain a cable core; (4) performing first extrusion treatment on the cable core to obtain an intermediate III; (5) winding PBO fiber on the inner sheath of the intermediate III to obtain an intermediate IV; and (6) carrying out second extrusion treatment on the intermediate IV. The middle of the cable is filled with ultra-high molecular weight polyethylene, the tensile layer is made of PBO, the cable is not affected by temperature during extrusion and can provide super-strong tensile strength, the inner sheath is made of chemical foaming polyurethane, and provided chlorosulfonated polyethylene rubber improves flame retardance, improves tensile strength and improves the retention rate of elongation after thermal aging.

The utility model relates to a full-glass curtain wall structure which comprises tempered glass, stainless steel channel steel, a glass curtain wall body, a glass curtain wall body and a glass curtain wall body. The rubber pads are cushioned on the upper side and the lower side of the tempered glass; the foam rod is filled between the flange of the stainless steel channel steel and the tempered glass, grooves are formed in the two ends of the foam rod, the foam rod is divided into multiple sections and is filled at intervals, and foaming polyurethane is injected into the intervals to fill the space between the foam rod and the rubber pad, so that the foaming polyurethane is combined with the grooves; the first cement mortar leveling layer is laid on the concrete structure bottom plate and the angle steel located on the concrete structure bottom plate; one side of the suspended ceiling is propped against the end part of the flange of the stainless steel channel above; and the sealant is filled along the foam rod and is used for sealing a gap between the cement mortar leveling layer and the tempered glass and a gap between the suspended ceiling and the tempered glass. The foam rod structure is not prone to loosening, and the sealing performance, the anti-leakage function and the service life can be guaranteed.

To provide a non-foam polyurethane resin which prevents drip without using a flame retardant and a drip prevention agent, and is excellent in flame retardancy.SOLUTION: A non-foam polyurethane resin is obtained while containing at least polyol (A), polyisocyanate (B) and a polymerization initiator (C) as raw materials, wherein a part or all of the polyol (A) is polyester polyol (A-1) obtained by esterification reaction of a polyhydric alcohol component and a polyhydric carboxylic acid component, a polyhydric carboxylic acid having a double bond as a carboxylic acid component used in the polyester polyol (A-1) is contained in the polyester polyol (A-1) so as to have double bond concentration of 3 to 16 mass%, and a foaming agent is not contained.SELECTED DRAWING: None

The invention relates to conductive hydrophilic flexible foam polyurethane as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing polyether glycol, diisocyanate and a tin catalyst to form a prepolymer, and then adding a foaming agent to obtain hydrophilic flexible foam polyurethane; (2) immersing the hydrophilic flexible foam polyurethane into the polyelectrolyte raw material solution, taking out and drying to obtain conductive hydrophilic flexible foam polyurethane; the polyelectrolyte raw material solution in the step (2) comprises a vinyl nitrogen heterocyclic compound, an acrylic acid compound, an initiator, an amine catalyst and water. Compared with the prior art, the conductive hydrophilic flexible foam polyurethane material prepared by the preparation method disclosed by the invention has good hydrophilicity and mechanical properties, introduces electrochemical response characteristics to the material, and can be used for preparing a sweat environment strain sensor with good strain responsiveness and humidity sensitivity.

Foamable polyurethane compositions are provided which comprise a specific polymeric methylene diphenyl diisocyanate (pMDI) component. The foamable polyurethane compositions make polyurethane foams having excellent thermal insulation properties and reaction-to-fire performance. The foamable polyurethane compositions and polyurethane foams are particularly useful for application of thermal insulation in the field. Methods for making and applying the foamable polyurethane compositions and polyurethane foams are also provided.

The utility model relates to the technical field of curtain walls, in particular to an ultra-low energy consumption unit curtain wall node which comprises an upper cross beam and a lower cross beam, through openings are formed in the positions, right opposite to hollow glass, of the upper cross beam and the lower cross beam, rigid foam polyurethane is filled in the through openings, the upper cross beam and the lower cross beam are partially matched in an inserted connection mode, and a first sealing rubber strip is pressed in a fit clearance. The opposite faces of the upper cross beam and the lower cross beam define a first channel and a second channel which are separated by the inserting and matching position, the first sealing rubber strip extends into the first channel, and a second sealing rubber strip and a third sealing rubber strip which are used for pressing the first sealing rubber strip and blocking the first channel are arranged in the first channel. The rigid foam polyurethane is located between the second sealing rubber strip and the third sealing rubber strip. The mode of pouring and filling the rigid foam polyurethane is adopted, so that the rigid foam polyurethane and the aluminum alloy profile are integrally formed, the situation that the heat transfer efficiency is reduced due to direct contact of the hollow glass and the aluminum alloy profile is avoided, water leakage and air leakage can be reduced or even avoided, and energy consumption can be reduced.

The invention belongs to the field of thermal insulation materials, and particularly relates to a preparation method of an all-water-blown polyurethane thermal insulation material for an environment-friendly ultrathin freezer, which comprises the following steps: adding nickel nitrate hexahydrate, trimesic acid and polyvinylpyrrolidone into a mixed solvent of DMF (Dimethyl Formamide) and water, reacting under a vacuum condition, cleaning and drying to obtain the all-water-blown polyurethane thermal insulation material for the environment-friendly ultrathin freezer. The spherical nickel-based MOF material is obtained; calcining the obtained spherical nickel-based MOFs material in a nitrogen environment, and naturally cooling to obtain a spherical porous derived carbon material; mixing polyol, water, resin, triethanolamine and the obtained spherical porous derived carbon material, and performing ultrasonic dispersion to form a component A; stannous octoate and isocyanate are mixed to form a component B; and mixing the component A and the component B to obtain the target product. The environment is not polluted, the heat preservation performance is improved, meanwhile, the compression strength can be improved, and core burning and cracking are not likely to happen.

The application relates to the technical field of architectural design, in particular to a metal texture slope roof suitable for tropical storm and typhoon areas, which comprises, from bottom to top, a reinforced concrete roof panel, a mortar layer, a three-layer waterproof layer, an isolation layer, a concrete protective layer and a silver gray paint layer; the three-layer waterproof layer comprises a polyurethane waterproof paint layer, an elastomer modified bitumen waterproof roll material and a hard foam polyurethane spraying layer. Reinforced anchor rings, reinforced meshes and cold-drawn steel wire meshes are all arranged in the concrete layer and have no direct contact with the atmosphere, so that corrosion and loss of effectiveness are avoided, and roof corrosion prevention is effectively realized; through the design of the three-layer waterproof layer, waterproof effect is effectively achieved, and heat preservation effect is simultaneously achieved; the metal texture slope roof suitable for tropical storm and typhoon areas is designed in the aspects of material selection, construction technology and combination reliability to adapt to tropical storm and typhoon areas, so that the requirements of roof structure on wind lifting resistance, waterproofness and corrosion resistance are met.

The utility model discloses an underground heat preservation pool which comprises a reinforced concrete groove body, a water bucket is placed in the reinforced concrete groove body, a foaming polyurethane layer is filled between the inner side wall of the reinforced concrete groove body and the outer side wall of the water bucket, and a groove opening of the reinforced concrete groove body is further fixedly connected with a matched cover plate. A through hole matched with a bucket opening of the bucket is formed in the center of the cover plate, and the bucket opening of the bucket extends into the through hole. According to the structure, the space between the reinforced concrete groove body and the water bucket is filled with the foaming polyurethane, so that a good heat insulation layer is arranged between the water bucket and the reinforced concrete groove body, and the water bucket becomes a heat insulation water bucket with good heat insulation performance.