1894results about How to "Improve sound insulation" patented technology

According to the thin-layer sound absorption superstructure composite acoustic enclosure and the using method, the acoustic enclosure is composed of the cover plate, the conformal frame, the thin-layer sound absorption superstructures and the porous sound absorption materials, the variety of the thin-layer sound absorption superstructures is not limited to one, and the broadband noise reduction effect can be achieved through the parallel superposition design of the thin-layer sound absorption superstructures and the porous sound absorption materials. Wherein the thin-layer sound absorption superstructure can absorb noise in different frequency ranges of medium and low frequency bands, the porous sound absorption material can absorb noise in medium and high frequency bands, and the working bandwidth of the composite acoustic shield after parallel connection and superposition can cover the low, medium and high wide frequency bands. The thin-layer sound absorption superstructure composite acoustic shield further has the advantages of being high in space utilization rate, high in space adaptability, small in thickness, low in surface density and high in material replaceability. Compared with an existing sound insulation cover, on the premise that the thickness is small and the surface density is low, the working frequency band is wider, the sound insulation effect is better, and the sound insulation cover has wide application prospects in noise control of various mechanical and electrical products.

The utility model relates to the technical field of building materials, in particular to an assembly type PC wallboard structure which comprises two butt-joint openings symmetrically formed in the bottom end of a wallboard body, two clamping plates are symmetrically arranged in the butt-joint openings, sliding columns in sliding connection with the wallboard body are fixedly connected to the side walls of the two clamping plates, and the side walls of the two clamping plates are fixedly connected with the bottom end of the wallboard body. The top of the wallboard body is symmetrically and fixedly connected with one ends of two connecting columns. According to the wall board, the two T-shaped blocks on the top of the wall board body are inserted into the grooves in the bottom end of the other wall board body, when the T-shaped blocks abut against the inclined plane portions of the clamping plates in a sliding mode, the clamping plates can abut against the two sides by a certain distance, and then the clamping plates are rapidly reset under extrusion of the reset springs; the T-shaped block can be clamped and positioned through the two clamping plates, so that the T-shaped block can be limited through the butt joint opening in the bottom end of the wallboard body and the cover plate, the PC wallboard can be quickly assembled, and the assembling efficiency of the PC wallboard is improved.

The invention belongs to the technical field of diesel generating sets, and mainly discloses a silent diesel generating set used in a low-temperature environment. The problem that self-starting load is increased due to initial connection of an output shaft of a diesel engine and an input shaft of a generator is solved. Comprising a mounting base, the mounting base is provided with a sound insulation shell, the mounting base is fixedly connected with a diesel engine and a generator, an output shaft of the diesel engine is fixedly connected with a fixing column, the fixing column is in spline connection with a sliding shell, a limiting block is slidably connected in the sliding shell, and an input shaft of the generator is fixedly connected with a connecting column. And the connecting column is rotationally connected with a rotating disc. By moving the position of the sliding shell, the limiting block and the rotating disc are connected and matched, meanwhile, the mute working state of the device is guaranteed through the sound insulation shell, the purpose that the output shaft of the diesel engine and the input shaft of the generator are initially disconnected is achieved, preheating is conducted only by independently rotating the diesel engine, and the rotating load of the output shaft of the diesel engine is reduced; and additional abrasion of the diesel engine is avoided.

The utility model relates to a modular building connecting node easy to assemble, which comprises a plurality of modules needing to be assembled mutually and connecting components used for connecting the modules, a box type node connecting box is arranged on the splicing corner of each module, bolt holes and positioning holes are respectively arranged on the splicing surface of the node connecting box, and the bolt holes and the positioning holes are connected with the connecting components. The other face of the node connecting box is further provided with an operation opening penetrating through an inner cavity of the node connecting box. The connecting assembly comprises a connecting plate and a positioning insertion block, a bolt hole and a positioning hole are formed in the connecting plate, and the positioning insertion block is inserted into the positioning hole of the connecting plate; connecting assemblies are arranged between the mutually-spliced modules, the two ends of the positioning inserting blocks are embedded into positioning holes of the joint connecting boxes on the mutually-spliced modules respectively, and the connecting plates and the mutually-spliced modules are fixedly connected through high-strength bolts. The module has the advantages that the module is convenient to hoist and align and easy to assemble, the assembling efficiency of a modular building can be improved, and a good sound insulation effect can be achieved.

The invention discloses a preparation method of a prefabricated autoclaved aerated concrete slab made of a solid-waste-based sulfur-aluminum-iron binding material. The preparation method comprises the following steps: preparing dry substances of the material; carrying out solid waste pretreatment by a mechanical ball milling method; adding ardealite, aluminum ash, coal gangue, fly ash, steel slag and carbide slag at the moment; calcining and directionally mineralizing after pretreatment; secondarily grinding the intermediate material; adding the secondarily ground intermediate material, cement, aluminum powder and water, and foaming; after the slurry is thickened, multi-frequency vibration is carried out in the pouring process; after pouring is completed, multi-temperature curing is conducted; after curing is completed, the highly-doped solid waste-based functional prefabricated autoclaved aerated concrete slab product is obtained. According to the autoclaved aerated concrete slab, dependence on natural resources is effectively reduced, meanwhile, carbon dioxide emission in the production process is reduced, and meanwhile, the compressive strength and the breaking strength of the autoclaved aerated concrete slab are improved; the service life of the material is prolonged; the preparation process is simplified, and the production difficulty and cost are reduced.

The utility model relates to the technical field of building waterproof materials, in particular to a fireproof PVC (polyvinyl chloride) coiled material which comprises a waterproof plastic laminating layer, the top surface of the waterproof plastic laminating layer is fixedly connected with a fastening frame, the fastening frame is made of a PE (polyethylene) protective film material, and a first sound insulation layer is arranged on the upper surface of the waterproof plastic laminating layer; the second sound insulation layer is mounted on the upper surface of the first sound insulation layer, a flame-retardant bonding layer is arranged on the top surface of the second sound insulation layer, and a top layer is arranged on the top surface of the flame-retardant bonding layer. The first sound insulation layer, the second sound insulation layer, the flame-retardant bonding layer and the top layer can be wrapped through the fastening frame, the overall protection effect is good, meanwhile, the fastening frame has the fastening effect, layer bodies can be tightly connected, the connecting effect is good, and the service life is long. And then through the design of attaching strips and fastening strips, the side walls of the first sound insulation layer, the second sound insulation layer, the flame-retardant bonding layer and the top layer can be clamped.

The utility model discloses an off-axis door assembly, a door frame of the off-axis door assembly and a door leaf of the off-axis door assembly, the off-axis door assembly comprises the door leaf, the door frame and an inflation and deflation component, the door leaf is hinged to the door frame, at least one of the door leaf and the door frame is provided with a first sealing component capable of being inflated and deflated, and the door frame is provided with a second sealing component capable of being inflated and deflated. The inflating and deflating component is connected with the first sealing component, the inflating and deflating component is configured to be capable of inflating or deflating the first sealing component, the first sealing component has a bulging state and a deflated state, and the first sealing component in the bulging state is used for sealing between the door leaf and the door frame. The off-axis door assembly is good in sealing performance, and therefore the off-axis door assembly can have the good sound insulation performance, the good heat insulation performance and the like.

The invention belongs to the technical field of court ground materials, and particularly relates to a ground material of a ground throw court and a preparation method thereof. The ground material of the ground throwing field comprises the anti-skid surface layer, the elastic buffer layer and the sound insulation layer from top to bottom, and has excellent sound insulation, impact resistance and wear resistance. The polyvinyl butyral bonded acrylic sound insulation felt and the jute fiber board are used as a sound insulation felt composite material to be laid on the surface of the base layer, so that the sound insulation effect of the ground of the ground throwing field is enhanced, boric acid and phenylboronic acid are compounded to react with siloxane, and reinforced gel prepared by adding a reinforcing material has excellent shear hardening and thermal stability, so that the sound insulation effect of the ground of the ground throwing field is improved. An elastic reinforcing material is prepared by compounding alkali-treated straw fibers and a reinforcing body prepared by compounding the alkali-treated straw fibers and a hydrophobically modified sponge framework, and has remarkable creep resistance and excellent impact hardenability, and the esterified straw fibers prepared by reacting the alkali-treated straw fibers with citric acid are used as a toughening agent to be added into wear-resistant elastic microspheres prepared by rubber, so that the wear-resistant performance of the wear-resistant elastic microspheres is greatly improved. The material has excellent wear resistance, light weight and aging resistance.

The utility model relates to a folding shed structure which comprises a plurality of edge covering clamping pieces and a folding shed body. Wherein the vestibule shed body comprises a plurality of vestibule shed rings, and each vestibule shed ring comprises an outer shed cloth layer, a middle shed cloth layer and an inner shed cloth layer; the outer-layer shed cloth and the middle-layer shed cloth are connected and combined to form a first cavity, the inner-layer shed cloth and the middle-layer shed cloth are connected and combined to form a second cavity, and the overlapping positions of the ends of the middle-layer shed cloth and the outer-layer shed cloth of the adjacent folding shed rings are clamped and connected through edge-covering clamping pieces. According to the folding shed structure, on the premise that the sound insulation performance is improved, the space requirement for installation of the folding shed is reduced, the total weight of the folding shed structure is reduced, the development requirements for compact space and light weight of the folding shed structure are met, meanwhile, the outer-layer folding shed ring plays a role in shielding the sewing lap joint position of the inner folding shed ring, and good rainproof and airtight performance is achieved.

The sound absorption body is characterized in that the sound absorption body comprises a light source, a flexible cover plate and at least one sound absorption body back cavity, a channel connected with the outside of the sound absorption body back cavity is formed in the sound absorption body back cavity, the flexible cover plate can cover the opening area of the channel, the flexible cover plate comprises a CNT-Nafion / PE double-layer driver, and the CNT-Nafion / PE double-layer driver is connected with the light source. The light of the light source can drive the CNT-Nafion / PE double-layer driver to deform and enable the channel to be opened or partially opened. According to the invention, the light-actuated CNT-Nafion / PE double-layer driver is used as a flexible panel, the light-actuated CNT-Nafion / PE double-layer driver can cover the opening area of the surface of the channel in a non-illumination state, the driver is deformed after illumination, and the opening of the channel is exposed, so that the sound absorption frequency band of the back cavity of the sound absorber can be adjusted.

The invention relates to the technical field of ceramic silica gel foam aerogel preparation, and discloses a ceramic silica gel foam aerogel sheet and a preparation method thereof. Comprising the following raw materials in parts by weight: 10-30 parts of aerogel powder, 10-30 parts of glass powder, 10-30 parts of one or a mixture of calcium silicate / mica powder / kaolin / wollastonite, 20-30 parts of aluminum hydroxide, 30-50 parts of hydroxyl silicone oil, 100 parts of organosiloxane, 0.1-0.5 part of a catalyst, 20-30 parts of hydrogen-containing silicone oil and 1-5 parts of color paste, the aerogel is silicon dioxide aerogel powder, the density is 1.5 MG / ML, the pore diameter is 10-50 NM, and the pore diameter is 10-50 NM. The glass powder is low-melting-point ceramic powder, and the particle size of the glass powder is 1-20 UM. The preparation method is simple, the process is easy to control, and the quality is stable. The prepared silica gel foam aerogel internally contains a uniform closed pore structure, so that the thermal insulation and sound insulation effects are greatly improved; the rebound resilience is good, and the gap filling effect of a current aerogel product is improved.

The invention relates to the technical field of energy conservation and environmental protection, and particularly discloses a preparation method of heat-insulating hydrophobic wood, which comprises the following steps: S1, mixing a silicon source and acid as raw materials to prepare silica sol, then adding an alkaline solution to prepare gel, and aging; s2, mashing the aged gel, adding hexamethyldisiloxane and hydrochloric acid for hydrophobic modification, cooling and standing after modification, discharging modified waste liquid at the lower layer, and filtering and drying a gel solution at the upper layer to obtain modified silicon dioxide aerogel powder; and S3, the modified silicon dioxide aerogel powder obtained in the S2 is added into ethyl alcohol to be evenly mixed, the dried wood is added for vacuum impregnation, drying is conducted after impregnation is completed, and the heat-insulation hydrophobic wood is obtained. The wood obtained through the method has good heat insulation and hydrophobic performance, and the size stability and mechanical performance of the wood can be effectively enhanced.

The utility model discloses a glass curtain wall with a high-strength connecting structure, which belongs to the technical field of glass curtain walls, and is technically characterized by comprising a curtain wall main body, and the curtain wall main body is of a three-layer stacking structure through an arranged butt joint stable mounting mechanism. The transparent sound insulation film for sound insulation is arranged at the joint of the inner-layer curtain wall body and the outer-layer curtain wall body, so that the sound insulation performance of the glass curtain wall is improved, meanwhile, the butt-joint stable installation mechanism also prevents external dust and water from entering a butt-joint installation gap, installation sealing protection of the glass curtain wall is achieved, and the service life of the glass curtain wall is prolonged. In addition, the overall installation stability of the curtain wall is correspondingly achieved through the butt joint stable installation mechanism, the supporting strength and rigidity of the glass curtain wall in use are remarkably improved, the stability is high, vibration and pressure can be buffered and dispersed through the arranged pressure-resistant buffering mechanism, pressure-resistant protection of the glass curtain wall is achieved, the pressure-resistant and anti-seismic performance is high, and the service life of the glass curtain wall is prolonged. The connecting structure has the advantages of good connecting stability and high strength.

The invention relates to the field of composite plates, and discloses a production process for producing a waste spinning composite plate by using waste clothes, the waste spinning composite plate comprises waste clothes, waste polyvinyl chloride, high density polyethylene, modified lignin, modified composite particles, an antioxidant, a heat stabilizer and a lubricant; the modified lignin is prepared by reacting DOPO with 2-octenyl succinic anhydride and then grafting with lignin; the modified composite particles are prepared by depositing mesoporous silica on the surface of aluminum hydroxide coated ammonium polyphosphate by utilizing a pore forming agent and tetraethyl orthosilicate and modifying through a fluorine-containing copolymer. Fibers in waste clothes are molten into an organic material and extruded into a plate, and the mechanical strength of the plate is improved by utilizing the strength of the fibers; in addition, due to the addition of the modified lignin and the modified composite particles, the board is endowed with excellent flame retardance, water resistance, ultraviolet yellowing resistance and mechanical properties.

The invention belongs to the technical field of automobiles, particularly relates to a composite material automobile sound insulation carpet, a preparation method and application, and provides the following scheme aiming at the problems of poor sound insulation effect and low temperature resistance in the prior art: the sound insulation carpet comprises a surface layer, a middle layer bonded at the bottom of the surface layer and an anti-skid layer bonded at the bottom of the middle layer, the middle layer comprises a honeycomb structure layer and a rubber plate layer adhered to the top and the bottom of the honeycomb structure layer; the middle layer comprises the following components in parts by weight: 35-45 parts of polypropylene resin, 20-30 parts of polycarbonate, 10-20 parts of modified starch, 5-15 parts of modified montmorillonite, 5-15 parts of stereopolylactic acid fibers and 5-10 parts of an additive, the middle layer adopts a honeycomb structure layer, and countless sound insulation cavities can be formed in the middle layer, so that the sound insulation effect is improved; the surface layer, the middle layer and the anti-skid layer are combined, and reinforcing materials are added inside, so that the low-temperature resistance of the carpet can be improved.

The invention discloses an assembled self-insulating recycled concrete block wall and a construction method thereof, wherein the wall comprises a beam-column system, a structural layer and a decorative layer; the decorative layer is fitted with one side of the structural layer; the beam-column system comprises an upper side beam, a lower side beam, a left column and a right column; the structural layer is a multi-layer masonry, and the multi-layer masonry comprises several layers of walls built by main blocks, a layer of walls built by secondary blocks, and end blocks; a left column and a right column are respectively arranged at both ends of the lower side beam; the structural layer is built on the lower side beam and is located between the left column and the right column; an upper side beam is arranged at the top of the structural layer; a first notch and a first convexity are respectively arranged on the outer sides of the left column and the right column; a second convexity is arranged at the top of the upper side beam, and a second notch is arranged at the bottom of the lower side beam. By arranging a special connector to connect the structural layer and the decorative layer, the assembly is convenient and the splicing efficiency can be greatly improved.

The utility model discloses a door leaf magnetic attraction sealing assembly and a door leaf assembly, which comprise a magnetic attraction metal fixing piece, a magnetic attraction sealing piece and a magnetic attraction sealing piece, the door leaf magnetic attraction sealing piece comprises a magnetic attraction piece positioning part, a buffering wrapping sleeve and a door leaf magnetic attraction strip, the door leaf magnetic attraction strip is wrapped with the buffering wrapping sleeve, the buffering wrapping sleeve is fixed to the magnetic attraction piece positioning part, and the magnetic attraction piece positioning part is inserted into the clamping groove. The door leaf magnetic attraction sealing piece is wrapped by the magnetic attraction metal fixing piece, the overall stability is improved, the door leaf magnetic attraction sealing piece cannot deform or crack after being impacted for a long time, and the door leaf magnetic attraction strip is wrapped by the soft buffering wrapping sleeve and the hard magnetic attraction piece positioning part. The magnetic attraction piece positioning part and the magnetic attraction metal fixing piece can be fixed through super glue, and the buffering wrapping sleeve is matched with the door pocket magnetic attraction sealing piece, so that the experience feeling of a customer during use is guaranteed, certain buffering force is obtained when the door leaf is closed and collides with the door pocket, and the sound of a door is reduced.

The utility model discloses an MPP electric power pipe cutting device which comprises a base, a noise reduction shell is fixedly installed at the upper end of the base, a sealing door plate is movably installed at the inner end of the noise reduction shell, a first sound insulation pad is fixedly installed at the outer end of the sealing door plate, and the first sound insulation pad is fixedly installed at the inner end of the noise reduction shell. Sound insulation cotton is fixedly mounted at the inner end of the noise reduction shell, the servo motor is driven by the electric push rod to ascend and descend, the servo motor drives the cutting blade to rotate so that the MPP electric power pipe can be cut conveniently, noise can be generated easily in the cutting process, and the sound insulation effect of the noise reduction shell can be improved conveniently through the sound insulation cotton. The first sound insulation pad facilitates sound insulation of the sealing door plate, the second sound insulation pad facilitates sealing and sound insulation of the MPP power tube placement groove, sound leakage can be prevented, the noise reduction effect is achieved, the perspective glass can check the internal cutting condition of the noise reduction shell, and the third sound insulation pad facilitates sealing and sound insulation of the perspective glass. And a start-stop button facilitates cutting operation.

The invention relates to the technical field of engineering machinery, and discloses an assembly type mobile operation platform with an intelligent early warning function, which comprises two parallel steel rails, the lower parts of the steel rails are fixedly connected to a structural floor, the upper parts of the steel rails are movably connected to a rail-mounted beam through rollers, the rollers are arranged on the two sides of the rail-mounted beam, and the steel rails are connected to the structural floor. Two parallel main beams are arranged above the rail-mounted beam, stand columns are fixedly connected to the rail-mounted beam, cameras and audible and visual alarms are arranged on the stand columns, the cameras are externally connected with an intelligent video analysis system, the main beams are fixedly connected with secondary beams through high-strength bolts, a steel plate is arranged above the secondary beams, and a protective sound insulation screen is arranged above the steel plate. Safety behaviors of workers are standardized, high-altitude falling accidents are avoided, noise pollution of a construction site is relieved, vibration of the working platform during starting and stopping is relieved, and health and safety of the workers are guaranteed.

The utility model belongs to the technical field of noise reduction barriers, and particularly relates to a sound barrier with a multistage noise reduction structure, which comprises a sound barrier plate, a noise reduction device is arranged in the sound barrier plate, and a splicing device is arranged on the right side of the sound barrier plate. According to the sound barrier with the multi-stage noise reduction structure, noise waves are absorbed and converted into kinetic energy through the noise reduction springs, noise is reduced, noise is further absorbed through noise reduction cotton on the inner wall of the noise reduction pipe, and the noise reduction effect is improved; meanwhile, an extension spring is compressed, then a splicing block on the other sound barrier plate is inserted into a splicing groove in the right side of the first sound barrier plate, then an insertion rod is loosened, the extension spring is reset under the self-elasticity effect, and therefore the insertion rod is pulled to be inserted into an insertion hole in the splicing block, and installation of the two sound barrier plates is completed rapidly; and the installation efficiency is improved.

The invention relates to the field of earmuff products, in particular to a high-flexibility attached earmuff and a preparation method thereof. The high-flexibility attached earmuff structurally comprises an outer protection layer located at the top, a sound absorption layer located in the middle and a flexible layer located at the bottom. The flexible layer is prepared from the following raw materials in parts by mass: 30 to 40 parts of polyether polyol, 20 to 30 parts of polyisocyanate, 5 to 10 parts of a foaming agent, 1 to 2 parts of a catalyst, 1 to 2 parts of a stabilizer, 3 to 5 parts of a flame retardant, 1 to 2 parts of an antioxidant and 5 to 15 parts of a filling agent. The earmuff product prepared by the invention not only has an excellent sound insulation effect, but also can effectively ensure that the earmuff product has good moisture resistance, water resistance, aging resistance, mechanical quality and other properties, and is especially suitable for environments requiring long-time wearing, such as the fields of music production, industrial operation and the like.

The invention relates to the technical field of honeycomb plates, and discloses a decoration soundproof environment-friendly honeycomb aluminum plate which comprises a mounting plate and a honeycomb core, a round seat is mounted in the honeycomb core, a sound absorption chamber is arranged in the middle of the round seat, round holes are formed in the outer surface of the sound absorption chamber, and an abutting mechanism is arranged in the bottom end of the round seat; and the abutting mechanism comprises an abutting rod located at the bottom end of the interior of the round base, and a round hole is formed in the outer surface of the sound absorption chamber. By arranging the round seats, the sound absorption chamber and the round holes, a proper number of round seats can be mounted in the honeycomb core according to the specific requirements of operators, when sound waves are transmitted through the honeycomb core, the sound waves impact the outer surfaces of the round seats and the sound absorption chamber, the transmission path and characteristics of the sound waves are changed, and then sound wave energy is consumed; and in addition, the multiple sound absorption balls are arranged, sound waves are further absorbed, and therefore the sound insulation performance of the whole honeycomb plate is enhanced.

The invention belongs to the technical field of novel fabricated buildings, and particularly relates to a method for forming an outer wall by multiple layers of wallboards and a steel structure, a plurality of wallboards which are mutually inserted are included, an outer wall layer is formed by pouring ceramsite and concrete, and an inner wall layer is made of aerated concrete; the assembling modules are formed by the C-shaped steel and the wallboards capable of being assembled, the connecting strength and stability between the wallboards are greatly improved during construction, the wallboards are installed on the H-shaped steel frame through laser ranging, radar positioning, a mechanical arm and the like, and a rigid and hard outer wall is built; the wallboard can be hoisted and inserted into the H-shaped steel structure at a time after the ground and the C-shaped steel are combined into a large panel, the multi-layer wallboard is of a double-layer new material structure or a sandwich new material structure, the whole wallboard is of a lightweight design, the overall weight of the wall is reduced, meanwhile, the excellent strength is achieved, and the wall bodies are assembled conveniently and rapidly.

The invention relates to a sound-proof and fireproof integrated assembly type partition wall keel which comprises decorative plates, fireproof and sound-proof rock wool plates and damping cores, every two adjacent decorative plates are connected through a connecting piece, transverse keels are installed on the inner sides of the decorative plates in the horizontal direction, and vertical keels are installed on the inner sides of the decorative plates in the vertical direction. The two fireproof sound insulation rock wool boards are installed in an inner cavity formed between the transverse keels and the vertical keels, the sound insulation boards are installed between the two fireproof sound insulation rock wool boards, the damping core is installed between the front vertical keel and the rear vertical keel, and the damping core tensions the front vertical keel and the rear vertical keel and further tensions the left sound insulation board and the right sound insulation board. According to the decorative wallboard, all the components are tensioned or pressed through the damping core, the components can be integrally assembled together, and the sound insulation and noise reduction performance of a product is greatly improved.

The invention discloses a soft high-density flame-retardant composite rubber and plastic buffer foam plate, and relates to the technical field of flame-retardant composite rubber and plastic buffer foam plates, the soft high-density flame-retardant composite rubber and plastic buffer foam plate comprises a rubber and plastic plate, a plurality of trapezoidal blocks are fixedly connected to the upper end of the rubber and plastic plate at equal intervals, positioning blocks are fixedly connected to the lower end of the rubber and plastic plate at equal intervals, and the positioning blocks are clamped to the inner sides of grooves formed in the upper end of a polyurethane coating at equal intervals; through the grooves between the rubber and plastic plate and the polyurethane coating, the density of the flame-retardant composite rubber and plastic buffer foam plate is increased conveniently, the stability between the outer layers of the flame-retardant composite rubber and plastic buffer foam plate is improved, the anti-falling function of the flame-retardant composite rubber and plastic buffer foam plate is further achieved, and through cooperation of the flame-retardant plate and the flame retardant grooves, the flame-retardant composite rubber and plastic buffer foam plate is prevented from falling off. The flame retardant can be conveniently added to enhance the flame-retardant capability of the composite rubber-plastic buffer foam plate, the flame retardance of the flame-retardant composite rubber-plastic buffer foam plate is improved, the spontaneous combustion prevention capability of the flame-retardant composite rubber-plastic buffer foam plate is further realized, and finally the problem that fire disasters are caused due to the fact that the environment temperature is too high and rubber and plastic are prone to fire is solved.

The invention provides a sandwich heat preservation floor slab and a forming method thereof and a prefabricated slab for the sandwich heat preservation floor slab, and belongs to the field of heat preservation composite floor slabs, the sandwich heat preservation floor slab at least comprises two prefabricated slabs, the two prefabricated slabs are closely spliced and laid on a structural beam to achieve support-free, and a bottom plate part, to be poured, of the floor slab is formed. The prefabricated plate comprises prefabricated bottom plate layers and heat preservation layers, the heat preservation layers are formed on the prefabricated bottom plate layers, plate edges of the adjacent prefabricated bottom plate layers are closely spliced to form splicing seams, connecting grooves are formed in the positions, close to the splicing seams, of the heat preservation layers, notches of the connecting grooves in the adjacent heat preservation layers are opposite, and lap joint pieces are arranged in the connecting grooves of the adjacent heat preservation layers in a lap joint mode. A cast-in-place layer is formed on the heat preservation layer in a pouring mode, the cast-in-place layer at least covers the lap joint pieces, and the connecting grooves are filled with the cast-in-place layer to form a three-layer sandwich structure with the prefabricated bottom plate layer, the heat preservation layer and the cast-in-place layer.

The invention relates to the field of building materials, in particular to a template-free multi-layer composite structure self-heat-preservation sound-insulation light inner wall which comprises a light foam concrete layer, a heat-preservation sound-insulation layer, a waterproof layer and a decorative layer. The light foam concrete layer is composed of cement, fly ash, hydrogen peroxide, polyphenyl particles, glass fibers, crushed crude pearlite, vermiculite powder, calcium stearate, expanded graphite, magnesium aluminum hydroxide, magnesium calcium lignosulphonate, ammonium molybdate pentaerythritol ester and titanate melamine salt. According to the contrast test, the construction efficiency, the light weight effect, the heat preservation performance, the sound insulation performance, the waterproof performance and the like of the building interior wall are remarkably superior to those of a traditional interior wall technology, and the building interior wall has wide application prospects and market value.

The utility model relates to a sound insulation and noise reduction aluminum alloy window, which belongs to the technical field of aluminum alloy windows and comprises an aluminum alloy frame and two aluminum alloy window bodies. A plurality of springs are arranged on the upper portion in the aluminum alloy frame, the upper ends of the springs are fixed in the aluminum alloy frame, the lower ends of the springs are fixedly connected with a supporting plate, and the lower end of the supporting plate is connected with a sliding rail used for fixing the aluminum alloy window body and enabling the upper portion of the aluminum alloy window body to slide. An arc-shaped sliding groove matched with the aluminum alloy window body is formed in the lower portion of the interior of the aluminum alloy frame. Sliding grooves matched with the sliding rails are formed in the top end of the aluminum alloy window body, and a plurality of steel ball rollers are fixedly mounted at the bottom end of the aluminum alloy window body; a telescopic first sound insulation cotton strip is arranged in the inner window body at the joint of the two aluminum alloy window bodies. The aluminum alloy window body can be conveniently installed in the aluminum alloy frame through the telescopic effect of the spring, the sliding rail is tightly attached to the sliding groove of the aluminum alloy window body through the gravity effect of the supporting plate and the sliding rail, and the influence of noise on residents is reduced.

The utility model discloses an assembly type sound insulation prefabricated wallboard, including spacing subassembly, plugging subassembly, sound insulation prefabricated wallboard body, fixing mechanism and second hanging ring, the sound insulation prefabricated wallboard body is provided in the inner cavity of spacing subassembly, the number of sound insulation prefabricated wallboard body is three, the plugging subassembly is provided in the right side of spacing subassembly, and the fixing mechanism is provided in the right side of spacing subassembly. The fixing mechanism is arranged at the bottom of the front face of the limiting assembly, the limiting assembly comprises a mounting frame and a buffer plate, the buffer plate is arranged on the left side of an inner cavity of the mounting frame, and the plugging assembly comprises a fixing rod, a first sliding groove and a clamping groove. The assembly type sound insulation prefabricated wallboard has the advantages of being good in fixing effect and convenient to assemble, and solves the problems that in the prior art, when an assembly type sound insulation prefabricated wallboard is assembled and spliced, the connecting positions of boards are generally fixed through bolts and pressing strips, so that the fixing effect is poor, meanwhile, the strength of the boards is prone to being damaged, and the cost is low. And gaps are not matched with each other.