13results about How to "Improve sound insulation performance" patented technology

The utility model discloses an aluminum-plastic co-extrusion building system door and window which is composed of an outer frame, a mullion and a glass sash. Glass is arranged between the upper transverse frame and the middle transverse frame and between the lower transverse frame and the middle transverse frame; the upper transverse frame, the middle transverse frame and the lower transverse frame are each composed of an outer profile assembly and an inner profile assembly. The outer profile assembly comprises an outer plate and an outer profile; the outer plate is connected with the outer profile through a first heat preservation and insulation structure. The outer plate and the outer profile are connected through the first heat insulation structure, the outer profile and the inner profile body are connected through the second heat insulation structure, multiple heat resistance barriers are formed, the first heat preservation layers co-extruded on the two sides are matched, a heat conduction path is effectively blocked, and the door and window profile has good heat preservation and heat insulation performance; in addition, heat insulation type aluminum-plastic co-extrusion systematic doors and windows with different K values or U values are constructed by combining the outer sectional material, the sealing structure and different inner sectional material bodies.

This utility model discloses a prefabricated soundproof ceiling system, including several hangers connected to the building floor slab. The lower ends of the hangers are connected to main keel hangers via adjusting components. The lower ends of the main keel hangers are inserted into the main keel. The main keel is connected to secondary keels via several secondary keel hangers. The lower ends of the secondary keels are connected to several soundproof ceiling panels. Each secondary keel hanger includes a hook-shaped connecting part I connected to the main keel and a sheet-shaped connecting part II connected to the secondary keel. The upper end of the secondary keel is provided with a connecting groove adapted to the connecting part II. This application solves the problems of low installation efficiency and poor sound insulation effect in existing soundproof ceiling systems, improves construction quality, enhances construction efficiency, and improves the sound insulation performance of the ceiling.

The application provides a nail-free interior sound insulation wall and a mounting method thereof, and belongs to the technical field of interior sound insulation walls.The nail-free interior sound insulation wall comprises a pre-assembled part, a top keel frame, a bottom support frame, a middle wall body support frame and a sound insulation assembly.The pre-assembled part is pre-assembled at the top position of the space where the interior sound insulation wall is located, and the long axis direction of the pre-assembled part is the same as the mounting direction of the interior sound insulation wall.The top keel frame is fixedly connected with the pre-assembled part, the bottom support frame is arranged at the corresponding bottom position of the top keel frame, the middle wall body support frame is fixedly arranged between the top keel frame and the bottom support frame, and the middle wall body support frame, the top keel frame and the bottom support frame jointly form the frame structure of the interior sound insulation wall.The nail-free interior sound insulation wall and the mounting method thereof can solve the problems of the existing nail-free interior sound insulation wall, such as complex mounting structure, low adjustability and the ability to only adapt to walls with the same structure.

The utility model provides a multi-layer sandwich structure light-weight high sound insulation board which comprises a first sandwich structure, a second sandwich structure, a third sandwich structure and a fourth sandwich structure, the first sandwich structure comprises a first sandwich structure face plate, a first sandwich structure back plate and a first sandwich structure core material, and the first sandwich structure core material is located between the first sandwich structure face plate and the first sandwich structure back plate; the second sandwich structure back plate is connected with the first sandwich structure back plate through reinforcing ribs to form a second sandwich structure; a reinforcing rib gap between the first sandwich structure back plate and the second sandwich structure back plate is filled with the sound absorption and heat insulation layer; and the acoustic super-structure layer is embedded in the sound absorption and heat insulation layer and is composed of periodic local resonance units. According to the light high-sound-insulation board with the multi-layer sandwich structure, the sound insulation performance is improved, meanwhile, the weight of the whole structure is reduced, light weight is achieved, and the light high-sound-insulation board has the excellent comprehensive performance of good rigidity, heat insulation, heat preservation and the like.

This invention discloses a sound insulation panel and its multi-tiered Helmholtz acoustic metamaterial resonant structure and design method, achieving broadband sound insulation, enriching the product's application scenarios, and optimizing the structural design to achieve easier processing and reduced costs. The multi-tiered Helmholtz acoustic metamaterial resonant structure includes at least two stages of thin-film-Helmholtz resonant structures arranged sequentially along the sound wave incident direction, and a homogeneous plate for fixing the last stage of the thin-film-Helmholtz resonant structure. Each stage of the thin-film-Helmholtz resonant structure includes a thin film and a plate arranged sequentially along the sound wave incident direction, with the opposite surfaces of the thin film and the plate sealed together. A first through-hole and a second through-hole are coaxially arranged sequentially along the sound wave incident direction on the plate. The second through-hole communicates with the first through-hole to form the resonant cavity of the thin-film-Helmholtz resonant structure, and the size of the second through-hole is larger than that of the first through-hole. The first and second through-holes of each stage of the thin-film-Helmholtz resonant structure have a stepped shape with gradually increasing opening size in the sound wave incident direction.

The invention relates to the technical field of polyurethane styrofoam, and particularly discloses a sound insulation polyurethane styrofoam for floors and a preparation method thereof.The styrofoam A component comprises a PCL-PTMG-MDI block copolymer, silane modified beta-polyvinylidene fluoride, bis-hydroxyethyl disulfide, zinc acetylacetonate, carboxylated multi-walled carbon nanotubes and acetylene black; the polystyrene foam component B is prepared from PTMEG polyether polyol, polyethylene glycol adipate polyol, flame-retardant polyether polyol, epoxy resin coated fly ash floating beads, silane modified basalt fibers, hydroxyethylated PVB fibers, tetrahydroxypropyl ethylenediamine, a microcapsule foaming agent, a foam stabilizer, a fumed silica thixotropic agent and an organic bismuth catalyst, and during use, the component A and the component B are mixed to form the flame-retardant polyurethane foam. The sound insulation polyurethane foaming glue for the floor is obtained.

The invention discloses a manufacturing method of a thin-film acoustic metamaterial composite sound insulation board, relates to the technical field of noise control, and aims to solve the problems that an existing thin-film acoustic metamaterial sound insulation board is narrow in sound insulation frequency band, core components are prone to damage, the structure is unstable, the machining precision is low, and the process adaptability is poor. The sound insulation plate comprises a porous sound absorption plate, a micro-perforated plate, a reinforcing grating and a protective layer, the reinforcing grating is of a frame type structure, the porous sound absorption plate is mounted in the reinforcing grating in a filling manner, the porosity of the porous sound absorption plate is linearly decreased from outside to inside, and the micro-perforated plate and the protective layer are sequentially mounted on the outer surface of the reinforcing grating filled with the porous sound absorption plate; the base plate comprises protective layers, clamping plates and a resonance film set, the resonance film set is composed of 2-3 layers of sound insulation films, an elastic damping layer is arranged between every two adjacent sound insulation films, the resonance film set is arranged between the two clamping plates, and the protective layers are arranged on the outer walls of the two clamping plates; the base layer plate is arranged between the two layers of sound insulation plates which are symmetrical in structure, and the reinforcing grating filled with the multi-hole sound absorption plates is connected with the protective layer of the base layer plate. 20-1600Hz broadband efficient sound insulation is realized, the structure is stable and durable, the product consistency is good, the weight is light, and the construction is easy.

The invention discloses a polyethylene fiber reinforced concrete material for a light sound barrier plate and a preparation method of the polyethylene fiber reinforced concrete material, and relates to the field of fabricated buildings. The method comprises the following steps: firstly, preparing swelling grafted rubber particles and modified polyethylene fibers, and melting and coating to obtain polyethylene fiber coated rubber particles; stirring the raw materials such as Portland cement, slag powder and the like at a gradient rotating speed to prepare a concrete base material, adding the polyethylene fiber coated rubber particles into the base material in batches, and performing stirring and vacuum defoaming to obtain the concrete material. The problems that traditional sound barrier plate concrete is large in dead weight and poor in tensile, anti-cracking and sound insulation effects, the interface bonding force between waste tire rubber particles and a concrete matrix is weak, and polyethylene fibers are prone to agglomeration are solved, the prepared concrete material has the light weight and the excellent mechanical property and sound insulation effect, and resource utilization of waste tires is achieved.

The utility model relates to noise control technical field discloses a sound insulation door, the sound insulation door includes the door frame (1) of no threshold and the door leaf (3) of opposite opening through the hinge (2) installation to the door frame (1) on, the contact surface of door frame (1) with door leaf (3) and the contact surface of two door leaf (3) are all formed with the ladder structure for installing multiple sealing members, and the bottom of door leaf (3) is equipped with the sealable seal strip (6). The sound insulation door is smooth, and the sealing performance is good, and the service life is long.

The embodiment of the application discloses a kind of acoustic logging sound insulation methods based on phononic crystal.The method comprises: according to the instrument wave main frequency range of the instrument to be sound insulated, the band gap constraint condition of sound insulation body is set;Determine the material attribute and scattering body filling rate value range of sound insulation body, according to the reference size parameter and band gap constraint condition of the instrument to be sound insulated, the lattice constant value range of sound insulation body is determined;According to the lattice constant value range and scattering body filling rate value range, construct two-dimensional parameter space grid matrix;According to material attribute, establish finite element energy band solver;Characteristic solution is carried out using finite element energy band solver, and the band gap characteristics of each matrix element is obtained;According to reference size parameter and the matrix element that satisfies preset band gap screening condition and the band gap bandwidth of the largest band gap characteristics, sound insulation body is designed;Sound wave logging sound insulation processing is carried out to the instrument to be sound insulated using the sound insulation body after design, high-efficiency sound insulation is realized, and the data quality of sound wave logging is improved.

The utility model discloses a composite shock absorption sound insulation board structure of ship relates to sound insulation board technical field. The utility model discloses a glass fiber reinforced polymer backboard is provided with foamed aluminum board in the top, and the top of foamed aluminum board is provided with the metal panel, the top of glass fiber reinforced polymer backboard is provided with the dismounting mechanism, and the dismounting mechanism includes the first threaded hole of being set up in the top of foamed aluminum board, and the second threaded hole of being set up in the top of metal panel. The utility model discloses a dismounting mechanism and threaded hole cooperation are set up, realized the quick dismounting and replacement of metal panel, avoided the corrosion risk of integral type board material, significantly improved maintenance efficiency and reduced the replacement cost, through positioning mechanism and the card slot structure, realized the accurate alignment and installation between multiple sound insulation boards, reduced the dependence on manual auxiliary positioning, improved installation accuracy and construction efficiency.

The utility model discloses a multi-band directional sound insulation front wall pad, relates to the technical field of automobile appliances, and comprises an outer noise reduction layer, a broadband sound insulation layer, a sound absorption resonance layer and an adhesive layer, the adhesive layer is fixedly connected to the top surface of the outer noise reduction layer, the broadband sound insulation layer is fixedly connected to the bottom surface of the outer noise reduction layer, and the sound absorption resonance layer is fixedly connected to the bottom surface of the broadband sound insulation layer. The outer noise reduction layer is used as the first layer in contact with an engine compartment, the high elasticity and flexibility of the outer noise reduction layer can absorb idling vibration of an engine, solid sound transmission is reduced, the noise reduction effect is good, the noise reduction effect is good, and the noise reduction effect is good. The matched critical frequency of the aluminum plate is damaged through the corrugated surface of the double-layer corrugated aluminum alloy plate, medium-high frequency band sound insulation troughs are avoided, gaps between the aluminum plates are prevented from being filled with damping glue, vibration of the aluminum plates is restrained, secondary noise radiation generated by vibration is reduced, and the overall sound insulation performance is improved.