323results about "Insulation improvement" patented technology

The invention relates to the technical field of material compositing, and discloses a polyurethane composite insulation board with a good flame retardant effect, which comprises the steps of fireproof surface layer pretreatment, flame retardant core layer preparation, reinforced substrate layer treatment, lamination molding and post-treatment, by designing a unique three-layer composite structure and adopting a multi-component synergistic flame retardant system, the flame retardant effect is good, and the flame retardant effect is good. The heat insulation board can form a multi-stage flame-retardant barrier when encountering high temperature and open fire, the flame spreading speed is slowed down, the overall fireproof safety of the material is improved, and the durability and stability of the flame-retardant effect are enhanced through the synergistic effect of all the functional layers; through surface modification treatment on the functional reinforcing phase, the interface bonding force between the functional reinforcing phase and a polyurethane matrix is improved, so that the flame retardant and the reinforcing phase are uniformly dispersed in the matrix, and the performance defect caused by agglomeration is avoided, thereby enhancing the mechanical strength and structural integrity of the material while keeping excellent thermal insulation performance.

The application provides a pressing equipment for processing insulation boards and a pressing method thereof, and relates to the field of board pressing. The equipment comprises a first box, a plurality of assemblies which are arrayed in the first box in parallel and contact with each other, and each assembly comprises a pressing plate base and four pressing plates corresponding to the top edges of the pressing plate base, wherein each pressing plate is rotationally connected to the corresponding top edge. An elastic member is arranged on each pressing plate base to support the pressing plate base in the first box. Two boards are sequentially placed in the first box, one of which is pressed on the top of part of the assemblies to form a groove, and the other board is placed in the groove and adheres to the board forming the groove. The rotation axes of the pressing plate bases and the pressing plates around the groove are higher than the two boards, so that the pressing plates not contacted by the adjacent pressing plates rotate downward and press against the top of the two boards.

The invention relates to the field of building heat insulation coatings, and discloses a high-efficiency long-life organosilicon aerogel building heat insulation coating and a preparation method thereof, the high-efficiency long-life organosilicon aerogel building heat insulation coating comprises the following components: an organosilicon resin matrix, a multi-stage heat insulation composite filler, a curing agent and an auxiliary agent; the multi-stage heat-insulation composite filler is prepared from hydrophobic modified nano silicon dioxide aerogel particles and hollow glass beads, the hydrophobic modified nano silicon dioxide aerogel particles are subjected to surface modification treatment through a silane coupling agent, and stable chemical bonding is formed between the hydrophobic modified nano silicon dioxide aerogel particles and an organic silicon resin matrix; therefore, a micro-scale and nano-scale continuous and stable multi-stage pore heat insulation network is constructed in the coating; the mass ratio of the hydrophobic modified nano silicon dioxide aerogel particles to the hollow glass beads is (1: 0.5)-(1: 2); the heat conductivity coefficient of the coating is not higher than 0.025 W / m.K. Compared with the prior art, the thermal insulation coating has the advantage that the problem that the thermal insulation coating in the prior art is difficult to give consideration to long-acting thermal insulation performance and durability is solved.

The invention relates to the technical field of heat insulation and preservation plates, and discloses an aerogel heat preservation composite plate which comprises a first glass fiber gridding cloth layer, an aerogel felt layer and a second glass fiber gridding cloth layer which are sequentially arranged in a stacked mode. The first glass fiber gridding cloth layer, the aerogel felt layer and the second glass fiber gridding cloth layer are sewn and connected through sewing threads, and a preparation method of the aerogel felt layer comprises the steps that firstly, cerium oxide is modified and grafted with a silane coupling agent, then graphene oxide and the silane coupling agent modified cerium oxide are dispersed with water, and the aerogel felt layer is obtained. Adding a liquid silicon compound into the mixture, adding a base catalyst to obtain sol, adsorbing the sol by using a porous reinforcing material, and then aging and drying to obtain the composite material. The aerogel insulation board is high in tensile strength and good in insulation effect.

The invention discloses a needle-punched glass fiber aerogel sound-absorbing plate which comprises the following components: 30-50% of a silicon dioxide aerogel precursor, 20-40% of a needle-punched glass fiber felt, 1-3% of a silane coupling agent, 0.5-1% of a dispersing agent, 0.2-0.5% of a defoaming agent, 3-8% of reinforced fibers and 2-5% of a binder. Through needled glass fiber mat reinforcement, silane interface modification and normal-pressure drying processes, collaborative optimization of high strength (compressive strength is greater than 0.64 MPa), high sound absorption performance (sound absorption coefficient is greater than 0.8) and low heat conductivity coefficient (0.018) of the material is realized. The preparation process is simple, the cost is low, and the material is suitable for noise treatment in the fields of buildings, automobiles, aerospace and the like and has remarkable economic benefits and environmental benefits.

The utility model relates to a vacuum plate structure, which is applied to the technical field of vacuum plates and comprises an aluminum plastic film, a core material and a getter, the aluminum-plastic film is provided with two layers, namely an upper aluminum-plastic film layer and a lower aluminum-plastic film layer, and the upper aluminum-plastic film layer and the lower aluminum-plastic film layer are annularly sealed; the core material is filled between the upper aluminum-plastic film layer and the lower aluminum-plastic film layer, the getter is arranged between the upper aluminum-plastic film layer and the lower aluminum-plastic film layer, and the space between the upper aluminum-plastic film layer and the lower aluminum-plastic film layer is vacuumized; the aluminum-plastic film comprises a nylon protective layer, a first aluminum foil layer and a polyethylene PE layer which are sequentially stacked, and the polyethylene PE layer in the upper aluminum-plastic film layer and the lower aluminum-plastic film layer is arranged on the side close to the core material. The space between the upper aluminum plastic film layer and the lower aluminum plastic film layer is filled with the core material and the getter, and vacuumizing treatment is carried out, so that the sound insulation characteristic of the vacuum plate is improved; and the first aluminum foil layer in the aluminum-plastic film can improve the sound insulation index of high-frequency sound in the vacuum plate, reduce the air leakage rate and improve the durability of the vacuum plate.

The embodiment of the utility model relates to a wallboard with an interlocking structure, a layer structure comprises an inner layer board, an aerogel coating and a facing board, so that the sound insulation and heat preservation effects of the wallboard are ensured; wherein a plurality of bulges are arranged on the outer side of the inner-layer plate; a plurality of grooves matched with the protrusions are formed in the inner side of the facing plate, and mechanical occlusal force is formed through the protrusions and the grooves. When the wallboard is used, in the y-axis direction of the straight line where the transverse ribs are located and the z-axis direction of the straight line where the vertical ribs are located, the wallboard resists an in-plane load through the mechanical meshing force of the convex ribs, the friction force of an overlapping interface and the bonding force of the aerogel coating; in the x-axis direction perpendicular to the transverse ribs and the vertical ribs, the wallboard resists out-of-plane loads through the mechanical occlusal force of the protrusions and the friction force of the overlapping interface, and therefore a three-direction interlocking mechanism of an existing heterogeneous material layer is formed, the strength of the wall is guaranteed, and the wall is not prone to falling off.

The utility model relates to the technical field of aluminum bamboo wood veneers, in particular to a fireproof composite silencing aluminum bamboo wood veneer for a multimedia space, which comprises an aluminum honeycomb core layer arranged in an aluminum layer, silicon dioxide aerogel is filled in the aluminum honeycomb core layer, heat insulation and silencing can be achieved, and a graphene fireproof coating expands after meeting fire, so that the fireproof composite silencing aluminum bamboo wood veneer is formed. And finally, water vapor is blocked through the PET film to enter the bamboo base layer, and the fireproof, sound-proof and damp-proof functions are achieved at the same time.

This invention discloses a production and construction method for a multi-layer thermally broken composite steel-framed exterior wall panel, belonging to the field of prefabricated steel structure building technology. The method includes the following steps: S1, pre-pressing radiant cooling ceramic decorative panels and vacuum insulation panels into an integrated decorative and thermal insulation panel; S2, setting inner steel ribs within a C-shaped steel frame; S3, setting embedded connectors at the upper part of the steel ribs and embedded load-bearing components at the lower part; S4, laying steel mesh at the C-shaped steel frame; S5, setting a composite insulation board and FRP connectors within a double-layer steel wire mesh in the C-shaped steel frame; S6, setting clamping plate and hook-reinforcement connectors within the joints of the integrated decorative and thermal insulation panel; S7, laying fiberglass mesh in the upper layer of microporous lightweight concrete of the exterior wall panel; S8, welding the root reinforcing bars of the threaded sleeve to the inner steel ribs. The steel frame and steel mesh-reinforced microporous concrete composite structure provided by this invention achieves high rigidity, integrity, and easy connectivity of the exterior wall panel.

The utility model discloses an environment-friendly decorative heat-insulation fireproof composite board which comprises a positioning board, a connecting board is arranged on one side of the positioning board, an aerogel heat-insulation layer is arranged on the inner side of the connecting board, the aerogel heat-insulation layer and the connecting board are bonded through a bonding layer, an outer base board is arranged on the outer surface of the connecting board, and a heat-insulation layer is arranged on the outer base board. The outer surface of the positioning plate located on one side of the connecting plate is coated with an expansion type fireproof coating, a honeycomb plate is arranged on the other side of the positioning plate, a calcium silicate fireproof layer is arranged at the upper end of the inner side of the honeycomb plate, a polyester fiber layer is arranged at the lower end of the inner side of the honeycomb plate, and an inner base plate is arranged at one end of the honeycomb plate. Hydrophobic coatings are arranged on the outer surfaces of the inner base plate and the outer base plate, clamping plates are evenly arranged at the two ends of the connecting plate, and the clamping plates are connected with the positioning plates through connecting grooves. The heat insulation and fireproof effects of the composite board are improved.

The utility model relates to energy storage equipment, in particular to a fireproof composite board and an energy storage cabinet, the fireproof composite board comprises a board body and a fireproof composite structure, the fireproof composite structure is arranged in an interlayer cavity of the board body, and the fireproof composite structure comprises a flame impact resistant layer and at least two heat insulation layers. The thermal insulation layers are stacked on the flame impact resistant layer layer by layer, gaps are pressed between the adjacent thermal insulation layers, each thermal insulation layer comprises a plurality of aerogel thermal insulation sheets which are arranged in a spliced mode, the flame impact resistant layer and the thermal insulation layers made of the aerogel materials are combined with the board body for use, and the fireproof performance and the thermal insulation performance of the board are effectively improved. And the device is suitable for equipment with high fire endurance requirements such as energy storage cabinets.

The utility model relates to the technical field of color steel plate splicing, and discloses a splicing structure of a color steel sandwich plate, which comprises two color steel plates, the left side of one of the color steel plates is fixedly connected with a positioning component for mounting the other color steel plate, the top end of the left side of one of the color steel plates is fixedly connected with a plurality of connecting blocks, and the connecting blocks are fixedly connected with the top end of the right side of the other color steel plate. A clamping groove is formed in the bottom of the left side of the connecting block, a plurality of mounting shells are fixedly connected to the interior of the right side of the other color steel plate, a connecting plate is fixedly connected to the bottom end of the interior of each mounting shell, a supporting plate is fixedly connected to the top of each connecting plate, and a limiting groove is formed in the top of each supporting plate. According to the utility model, the engineering project can be delivered and used more quickly, the time cost is reduced, the working efficiency can be improved by quick splicing, more workload can be completed within limited time, the flexibility of the construction process can be enhanced, and field changes can be coped with in time.

The utility model discloses a polypropylene frame nanometer thermal insulation board, which comprises a thermal insulation board body, the outer end of the thermal insulation board body is fixedly connected with an MPP reinforced frame, the thermal insulation board body comprises a protective layer, an electromagnetic shielding layer, a thermal insulation layer, a sound absorption damping layer, a fireproof blocking layer and a lining layer, the protective layer is attached to the electromagnetic shielding layer, and the lining layer is attached to the thermal insulation layer. A traditional silica gel frame is replaced by the MPP frame, a multi-layer functional structure is integrated, the comprehensive performance and the application range of the nanometer heat insulation plate are remarkably improved, the fire endurance breaks through 1.5 hours through double protection of the flame-retardant MPP surface layer and the ceramic coating, leap-type improvement is achieved compared with 0.5 hour of the silica gel frame, and the service life of the nanometer heat insulation plate is prolonged. The aerogel core layer is embedded into the MPP reinforcing ribs, so that the heat insulation and bearing capacity structure is optimized, and the physical performance of the heat insulation plate is improved to a great extent.

The utility model relates to the technical field of insulation boards, in particular to a composite insulation board insulation system. According to the technical scheme, the wall comprises a wall body, and a bonding mortar layer is arranged on one side of the wall body; the heat preservation assembly is arranged on the outer side of the adhesive mortar layer and used for heat insulation, and an anti-crack mortar layer is arranged on the outer side of the heat preservation assembly. According to the utility model, the clamping strip is inserted into the clamping groove through the insertion opening, and the sealing glue is filled in the clamping strip; a connecting layer adhesive enters the clamping grooves through the through holes to seal gaps between the first heat insulation plate and the second heat insulation plate and the vacuum heat insulation plate, it can be ensured that the vacuum heat insulation plate is compounded between the first heat insulation plate and the second heat insulation plate in a sealed mode, a sealed cavity is formed, air leakage and virtual adhesion caused by the gaps existing in compounding are avoided, and the service life of the vacuum heat insulation plate is prolonged. The heat preservation effect and the mechanical effect are improved.

The utility model discloses a kind of composite outer formworks with high anti-bending load performance, it is related to building thermal insulation material technical field, including vacuum insulation board and the cladding thermal insulation slurry coated in the outside of vacuum insulation board, glass fiber mesh is equipped in the cladding thermal insulation slurry of vacuum insulation board side, steel wire mesh is equipped in the cladding thermal insulation slurry of vacuum insulation board other side, the glass fiber mesh and steel wire mesh are all with vacuum insulation board surface parallel arrangement is set, the utility model is set by glass fiber mesh and steel wire mesh in the cladding thermal insulation slurry of vacuum insulation board front and back two sides respectively, can effectively improve the impact resistance and the bending performance of this composite outer formwork, reduce the breakage rate of composite outer formwork in transportation and construction process, improve the service life of this composite outer formwork simultaneously.

The invention relates to the technical field of plates, in particular to an artificial board with a heat insulation function, which comprises two groups of base materials, the two groups of base materials are stacked, a bonding layer is arranged between the two groups of stacked base materials, a protective layer is sleeved above the two groups of stacked base materials, and heat insulation layers are embedded in the two groups of base materials. Hidden assembling assemblies are arranged on the two sides of the base materials and used for assembling and fixing the two base materials. The heat-insulating artificial board has the beneficial effects that the embedding grooves are formed in the top surfaces of the base plate and the clamping plate and are filled with the first heat-insulating filler layer and the second heat-insulating filler layer respectively, and two heat-insulating cavities are formed in the artificial board. The cavity between the base plate and the clamping plate is filled with the first heat insulation packing layer, the cavity between the clamping plate and the sleeve plate is filled with the second heat insulation packing layer, and the multi-layer heat insulation structure effectively reduces heat conduction paths and greatly reduces the heat transfer speed.

The invention discloses a manufacturing process of a vacuum insulated panel with a low vacuum degree enhanced in a structure. The manufacturing process comprises the following steps: carrying out compression pretreatment on a core body; laying surface-coated fiber cloth on the upper surface and the lower surface of the core body subjected to compression pretreatment, and implanting web wires according to preset density through a web wire machine to form a plurality of reinforced web wires penetrating through the thickness direction of the core body; a barrier layer is arranged, covers the upper surface and the lower surface of the core body and is fixedly connected with the belly wire exposed out of the core body, so that a reinforcing structure for resisting compression and stretching in the direction perpendicular to the surface of the core body is formed in the core body; vacuumizing the core body with the barrier layer until the core body is in a low-vacuum state with absolute pressure of 1000 Pa to 10000 Pa, and performing airtight sealing to obtain the vacuum insulated panel; wherein the barrier layer is configured to be a structural layer capable of realizing airtight packaging. Therefore, the core body has the capability of actively resisting pressure before being packaged, the'bulge 'failure caused by the collapse of the core body structure is fundamentally avoided, and the durability of the product is improved by an order of magnitude.

This invention relates to a space-grade vacuum insulation panel and its preparation method, belonging to the field of materials technology. It involves selecting specific components and proportions of various organosilanes and mixing them, then drying them at atmospheric pressure to obtain an aerogel core material. The specific surface area of ​​the fiber-reinforced aerogel composite core material is effectively controlled to reach 280–600 m². 2 A micro-nanoporous aerogel core material with a pore size ranging from 30 to 500 nm was obtained, and subsequently used to fabricate a long-life vacuum insulation panel. This atmospheric pressure drying method eliminates the need for chemical modification and low-surface-tension solvent replacement of the aerogel surface. The micro-nanoporous aerogel structure can be directly obtained through high-temperature heating, which facilitates the removal of gas from the aerogel pores during the vacuuming process of the vacuum insulation panel. This reduces the impact of residual gas on the lifespan of the vacuum insulation panel and solves the existing problem of incompatibility between thermal insulation performance and long lifespan in vacuum insulation panels.

The invention discloses a vacuum heat insulation anchoring system with a breathing micro-channel and a cap broken bridge structure and a construction method, and relates to the technical field of building energy conservation and outer wall heat preservation, in particular to the vacuum heat insulation anchoring system with the breathing micro-channel and the cap broken bridge structure and the construction method. The device comprises a vacuum heat insulation unit, an anchoring assembly and an edge broken bridge heat insulation strip. The vacuum heat insulation unit is a vacuum heat insulation plate, and packaging flange edges extending outwards are arranged on the periphery of the vacuum heat insulation unit. The anchoring assemblies are arranged at the abutted seams between the adjacent vacuum heat insulation units and used for pressing and fixing the packaging flange edges. The edge broken bridge heat insulation strip is arranged on the outer side of the packaging flange edge and the outer side of the anchoring assembly and covers the packaging flange edge and the anchoring assembly. The back face of the vacuum heat insulation unit is of a flat structure, and a micro-gap cavity ranging from 3 mm to 5 mm is formed between the vacuum heat insulation unit and the base layer wall by means of the thickness of the structural adhesive. The anchoring assemblies are arranged at the abutted seams of the vacuum heat insulation units, the outer sides of the anchoring assemblies are covered with the edge broken bridge heat insulation strips, meanwhile, the moisture removal micro-gap cavities are formed through the structural adhesive, it is guaranteed that the vacuum heat insulation plates are reliably fixed, meanwhile, an anchoring heat bridge is effectively blocked, and moisture removal of the wall is achieved; therefore, the overall heat insulation performance and the use reliability of the external wall insulation system are improved.

Provided is a vacuum adiabatic body. The vacuum adiabatic body includes a supporting unit configured to maintain an inner vacuum space part and a pipeline disposed in the vacuum space part. A pipeline is spaced apart form a third space by the supporting unit, and movement of the pipeline in a horizontal direction is restricted by the supporting unit. According to an embodiment, a heat exchange pipeline through which a refrigerant flows may be stably supported by an interaction between the spacing member and the support unit.

The invention discloses a polyurethane flame-retardant sound-insulation composite board with a multi-layer structure and a preparation method thereof, and belongs to the technical field of composite boards, nickel nitrate is used as a nickel source, ferric nitrate is used as an iron source, nickel ferrite powder is obtained through a solvothermal method and a high-temperature calcination method, the nickel ferrite powder is compounded with graphene oxide to obtain composite aerogel powder, the surface of the composite aerogel powder is coated with polydopamine, and the flame-retardant sound-insulation composite board with the multi-layer structure is obtained. The enhanced aerogel powder is obtained; the preparation method comprises the following steps: preparing functional rigid polyurethane foam from polyether polyol, polymethylene polyphenyl polyisocyanate, enhanced aerogel powder, ammonium polyphosphate, magnesium hydroxide and a foaming aid through a one-step foaming method, putting the functional rigid polyurethane foam as a core layer between an aluminum-magnesium-manganese alloy color steel plate and a porous sound insulation plate, and carrying out hot-pressing compounding, so as to obtain the aluminum-magnesium-manganese alloy color steel plate / porous sound insulation plate. The polyurethane flame-retardant sound-insulation composite board with the multi-layer structure is obtained; and comprehensive improvement of flame retardance, sound insulation, heat insulation, electromagnetic shielding and dimensional stability is realized.

The utility model discloses a film laminating mechanism for processing a vacuum insulated panel, which comprises a base, a reel is arranged at the upper end of one side of the base, a film laminating material is arranged outside the reel, a convex seat is arranged on the surface of the base, a film laminating compression roller is arranged on the inner side surface of the convex seat, a motor is fixed on the outer surface of the convex seat, and the motor is connected with the film laminating compression roller. A driving shaft of the motor is fixed to the end face of the film covering pressing roller, a plate body is placed on the inner side surface of the base, a supporting plate is fixedly connected to the upper surface of a protruding seat of the base, an air cylinder is fixedly connected to the upper surface of the supporting plate, and a cutting blade is fixedly connected to the end face of a pushing rod of the air cylinder. An electric push cylinder is fixed to the surface of the outer side of the base, a pushing strip is fixed to the end face of a pushing rod of the electric push cylinder, the positioning strip capable of being positioned and a positioning wheel structure are adopted, the positioning distance can be adjusted so that the device can be attached to and supported on the side face of a plate body, a motor drives a film covering pressing roller to conduct extrusion conveying, film covering can be conducted while conveying is conducted, efficiency is high, and the mechanism is simple. The cost is low.

The invention relates to a graded pressure relief vacuumizing method and device for an aluminum foil-coated nano insulation board, and the method specifically comprises the steps: S1, placing an aluminum foil vacuum bag with a built-in nano insulation board in a vacuumizing device, and enabling a bag opening to be positioned at a heat sealing station of the vacuumizing device; s2, the aluminum foil vacuum bag is covered with a silica gel plate; s3, a vacuumizing device is started, and the interior of the aluminum foil vacuum bag is vacuumized; micro-amplitude vibration is applied to the area where the first air cavity and the second air cavity are located in the vacuumizing process; s4, after vacuumizing reaches the preset vacuum degree, a hot sealing strip is driven to conduct hot pressing sealing on the bag opening; and S5, after heat sealing is completed, the whole silica gel plate conducts pressure maintaining and cooling on the bag body. The method has the following advantages that warping, dislocation or wrinkling of the bag opening area is avoided, the exhaust smoothness, closing stability and heat sealing strength of the bag opening area are guaranteed, and the vacuum heat insulation packaging performance of the metal-based aluminum foil bag opening is remarkably improved.

The application discloses a preparation method of a laminated flame-retardant high-molecular composite waterproof roll material, belongs to the technical field of waterproof roll materials, and comprises the following steps: preparing a phase change fiber film through electrostatic spinning, depositing and coating magnesium hydroxide in situ and homogenizing to obtain homogenized fibers, mixing the homogenized fibers with carboxymethyl cellulose / polyacrylamide to obtain phase change fiber aerogel powder; modifying the surface of ammonium polyphosphate wrapped with silicon through amination, then compounding nano zinc oxide through electrostatic self-assembly to obtain a composite flame retardant, and then preparing a multifunctional composite core layer through melt blending, open mill plasticizing and mold pressing by using polyvinyl chloride resin, phase change fiber aerogel powder, the composite flame retardant and other additives, and finally hot-pressing the core layer and a polypropylene non-woven fabric layer to obtain the laminated flame-retardant high-molecular composite waterproof roll material, so that waterproof, flame-retardant and heat-insulating multifunctional integration is realized.

The utility model relates to the technical field of PC (Poly Carbonate) sunlight plates, in particular to a multi-layer composite heat insulation type PC sunlight plate. According to the technical scheme, a surrounding plate is arranged on the periphery of a shell, a supporting block is installed in the shell, supporting plates are installed on the two sides of the supporting block, aerogel heat insulation films are installed on the two sides of the supporting plates, and a honeycomb plate is installed between the shell and the supporting block; the supporting block is a pyramid, a separation chamber is formed in the supporting block, and the supporting plate is located between the supporting block and the honeycomb plate. Through the structures such as the supporting block, the honeycomb plate and the through holes, reasonable guiding and heat exchange of cold and hot air flow are achieved, the indoor temperature can be adjusted, the indoor environment comfort degree is improved, and energy consumption is reduced.

The application relates to the technical field of building insulation boards, and discloses a building insulation board and a grid cloth wrapping equipment. The building insulation board comprises a base plate, a sticking layer connected with the base plate, an energy storage layer connected with the sticking layer, a main insulation layer connected with the energy storage layer, a buffer layer connected with the main insulation layer, and a protective layer connected with the buffer layer. A plurality of convex point textures are arranged in the protective layer, and the thickness of the convex point textures is 0.1-0.3 mm. The buffer layer comprises at least two layers of structures, namely a first protective layer and a second protective layer. The first protective layer wraps the second protective layer, and the density of the first protective layer is greater than that of the second protective layer. The convex point textures are arranged on the surface of the insulation board. The buffer layer with the gradient structure can reduce the overall gravity on the basis of ensuring the protection capability. The filled silicon dioxide aerogel can solve the problem of insulation failure of a traditional vacuum board after damage.

The utility model relates to the technical field of composite boards, in particular to a multi-layer composite insulating board which comprises a board body, the board body comprises two insulating layers, two connecting layers and a base layer, a vacuum cavity is formed in the base layer and has a sound insulation function, and a plurality of reinforcing boards are evenly arranged in the vacuum cavity and have a sound insulation function. A triangular columnar cavity is formed between every two adjacent reinforcing plates, stability is achieved, the structural strength of the plate body is enhanced, the service life of the plate body is prolonged, the insulating layers are fixedly installed on the two sides of the base layer through the connecting layers, and the insulating layers are made of asbestos materials and have good insulating performance. The surface layer made of rubber is adhered to the side, away from the connecting layer, of the insulating layer, the rubber has an insulating effect, the insulating performance of the plate body is enhanced, the four corners of the insulating layer, the connecting layer and the base layer are fixedly connected through screws, further reinforcement is achieved, it is guaranteed that all the layers are connected tightly, and falling and falling apart are prevented.

The invention relates to a preparation method of a phenolic aldehyde coated silicon oxide aerogel plate, which comprises the following steps: preparing phenolic aldehyde reticular aerogel from resorcinol, formaldehyde, an organic solvent, 3-aminopropyltriethoxysilane and a columnar array template, and compounding the phenolic aldehyde reticular aerogel as a base material with silicon oxide aerogel. The silicon oxide aerogel is coated with phenolic aldehyde, so that the problem that the mechanical property of the silicon oxide aerogel is insufficient is solved. And compared with the traditional fibrofelt-reinforced silicon oxide aerogel, the phenolic aldehyde-coated silicon oxide aerogel has lower heat conduction familiarity and more excellent heat preservation and heat insulation effects. Wide application prospects are realized in the fields of building heat insulation, new energy automobile battery heat protection and the like.

The invention provides a vacuum insulation board, a preparation method thereof and refrigeration equipment. The vacuum insulation board comprises a first membrane material, a second membrane material and a plurality of supporting core materials, and the first membrane material and the second membrane material are oppositely arranged; the first membrane material is provided with a plurality of first grooves which are recessed in the direction away from the second membrane material, the second membrane material is connected with the peripheries of the first grooves in a sealed mode to form a plurality of vacuum cavities, a supporting core material is arranged in each vacuum cavity, and the two opposite ends of each supporting core material abut against the first membrane material and the second membrane material respectively. According to the vacuum heat preservation plate, gas convective heat transfer and gas heat conduction can be eliminated, so that the heat conductivity coefficient of the vacuum heat preservation plate is reduced, and the heat insulation and heat preservation performance of the vacuum heat preservation plate is effectively improved.

The utility model discloses a vacuum insulated panel, including honeycomb core, fibrofelt, getter and barrier membrane, honeycomb fibrofelt sandwich structure is formed by respectively setting the fibrofelt on the both sides of honeycomb core thickness direction, and the barrier membrane is set up around honeycomb fibrofelt sandwich structure and wraps it, and getter is set up between fibrofelt and barrier membrane. The vacuum insulated panel disclosed by the utility model is simple in structure, the vacuum insulated panel can be formed only by attaching the fiber felts to the two sides of the honeycomb core in the thickness direction, placing the getter on the surfaces of the fiber felts, wrapping the sandwich structure of the honeycomb fiber felts through the barrier film and vacuumizing, and the vacuum insulated panel is simple in preparation process, low in cost and high in practicability. The complexity of the preparation process of the vacuum insulation panel can be reduced; the density of the honeycomb core is far lower than that of the fiber felt, so that the weight reduction effect is achieved, and the weight reduction effect is achieved compared with the whole use of the fiber felt; the honeycomb core and the fiber felt are used as porous materials, so that the heat conductivity coefficient can be reduced, and excellent heat insulation performance is achieved.