113results about How to "Improve sound absorption" patented technology

The invention relates to the technical field of sound-absorbing materials, in particular to a foaming sound-absorbing material with a high aperture ratio structure and a preparation method and application thereof.The foaming sound-absorbing material comprises one or more of polylactic acid, poly (adipic acid) / butylene terephthalate and polyhydroxyalkanoate, the density of the foaming sound-absorbing material is 0.04-0.08 g / cm < 3 >, and the porosity of the foaming sound-absorbing material is 20-30%. The aperture ratio of the foaming sound absorption material is higher than 60%. According to the invention, the polymer foaming sound absorption material with high aperture ratio can be prepared without adding other fillers and assistants, the prepared foaming sound absorption material has the characteristics of high aperture ratio, small density and the like, and the foaming sound absorption material can realize efficient absorption of sound waves in a thickness range of 10 mm.

A sound-absorbing and sound-insulating module for a vehicle includes a perforated plate defining a plurality of apertures, a sound-absorbing material that is porous and disposed on the perforated plate, and a sound-insulating material disposed on the sound-absorbing material. The perforated plate, the sound absorbing material and the sound insulating material are sequentially combined. The diameter of the apertures, the number of apertures, and the distance between the apertures are determined based on the noise frequency band, thereby efficiently responding to various frequency bands of noise generated by one or more portions of a particular component of the vehicle.

The invention relates to the technical field of air conditioning equipment, in particular to an air treatment air cabinet. The air handling air cabinet comprises a shell, an air duct is arranged in the shell, and the air duct comprises an air return channel, a heat exchange channel and an air supply channel which are sequentially arranged in the air flow direction; the air return channel and the air supply channel are arranged side by side in parallel, so that the air channel is of a U-shaped structure. The heat exchanger comprises a filter module, a heat exchange module, a fan module and a silencing module. According to the embodiment of the invention, the air duct is arranged to be of the U-shaped structure, so that the flowing path of air in the air cabinet is more reasonable, the air flowing resistance is reduced to a certain extent, and the air treatment efficiency is improved. Due to the fact that the filtering module is mainly installed in the air return channel, the space occupied by the filtering module is sufficient, under the condition of the same air passing area, the filtering module can be thicker, the whole unfolded filtering area is larger, the service life is longer, and the replacement period of the filtering module is greatly prolonged.

The invention discloses a super wear-resistant mute felt material and a preparation method thereof. The felt material comprises the following preparation raw materials in percentage by mass: 30-70% of nylon fiber / bio-based polyamide fiber; 6-15% of graphene polyester fiber; 20-60% of polypropylene fiber; the thickness of the felt material ranges from 1 mm to 24 mm, and the gram weight ranges from 300 gsm to 2400 gsm. According to the invention, the material ratio is optimized, the performance advantages of each component material are fully exerted, the bio-based material and the environment-friendly finishing agent are selected, the influence on the environment is reduced, the interwoven structure and porosity among the fibers are improved by adjusting the physical characteristics of the fibers, such as thickness, length and cross section shape, the attraction coefficient can reach 0.72-0.81, and the mechanical properties of the fibers are improved. The felt has the advantages that the felt is high in wear resistance, can resist reciprocating wear for 200,000 times at most, can effectively control sound absorption, sound insulation balance and super wear resistance, is endowed with excellent waterproof, oil-proof and antifouling properties, can be applied to various occasions, and has a good application prospect.

The utility model discloses a nonmetal sound barrier unit plate which comprises a plurality of cement-based sound absorption panels arranged in parallel, a pouring inner mold is arranged on the back side face of each cement-based sound absorption panel, and a back cavity is defined by the pouring inner molds and the cement-based sound absorption panels. Concrete pouring structures are arranged on the periphery of each cement-based sound absorption panel and the pouring inner mold and the back side face of the pouring inner mold, the concrete pouring structures located on the back side face of the pouring inner mold form a back plate, and the concrete pouring structures located between the adjacent cement-based sound absorption panels and the pouring inner mold form joints. The concrete pouring structures located on the outermost peripheries of all the cement-based sound absorption panels and the pouring inner mold form side plates, and reinforcing steel bars are arranged in the side plates in the length direction and the height direction of the unit plates correspondingly. The nonmetal sound barrier unit plate has the advantages of being safe and reliable in structure and excellent in sound absorption and insulation performance and mechanical performance.

The invention relates to a sealing strip and an automobile, and the sealing strip comprises a sealing part and an acoustic metamaterial structure; the sealing part forms an accommodating cavity; the acoustic metamaterial structure is arranged in the accommodating cavity; the acoustic metamaterial structure comprises a cavity structure and an acoustic metamaterial unit arranged on one side of the cavity structure; wherein the cavity structure is provided with a resonant cavity, and the resonant cavity is provided with a first opening close to the acoustic metamaterial unit; the acoustic metamaterial unit comprises a film and a mass block, the film blocks the first opening of the resonant cavity, and the mass block is arranged on the side, away from the resonant cavity, of the film. The sound insulation and noise reduction capacity of the sealing strip is high.

The invention discloses a composite heat-conducting and sound-absorbing material as well as a preparation method and application thereof. The composite heat-conducting and sound-absorbing material comprises a porous matrix, a sound-absorbing material filled in pores of the porous matrix, and heat-conducting aerogel formed in the pores of the porous matrix, gaps between the porous matrix and the sound-absorbing materials and / or gaps between the sound-absorbing materials are filled with the heat-conducting aerogel, and the heat-conducting aerogel and the sound-absorbing materials are interwoven to form a three-dimensional net-shaped structure. The porous matrix is filled with the sound absorbing material, the aerogel is formed in situ between the porous matrix and the sound absorbing material, the three-dimensional network structure formed by interweaving the aerogel can effectively fix the sound absorbing material and prevent the sound absorbing material from falling off under the condition that a binder is not used, meanwhile, the specific surface area of the product can be increased through introduction of the aerogel, and the sound absorbing effect is improved. The sound absorption effect of the product is further improved; in addition, the heat conduction aerogel with the three-dimensional network structure can improve the heat conduction capability of the product, so that the product has a good application prospect in electronic devices with sound absorption and heat dissipation requirements, such as loudspeakers and the like.

The utility model discloses an antibacterial automobile carpet sound insulation pad which comprises a carpet sound insulation pad body, carpet burrs are arranged at the upper end of the carpet sound insulation pad body, porous silica gel is installed on the outer wall of the carpet sound insulation pad body, a copper sheet and a zinc sheet are installed on the surface of the porous silica gel, and a rubber suction cup is connected to the bottom of the carpet sound insulation pad body. A wear-resistant layer A is arranged on the outer layer of the carpet sound insulation pad main body, a bamboo fiber layer A is connected to one side of the wear-resistant layer A, a sound insulation cotton layer A is connected to one side of the bamboo fiber layer A, a carpet base layer is connected to the bottom of the sound insulation cotton layer A, a sound insulation cotton layer B is arranged on one side of the carpet base layer, a bamboo fiber layer B is connected to one side of the sound insulation cotton layer B, and a wear-resistant layer B is connected to the bottom of the bamboo fiber layer B; according to the carpet sound insulation pad, the unique design of the carpet sound insulation pad body enables noise in an automobile to be obviously reduced. Due to the arrangement of carpet burrs, the attractiveness of the carpet is improved, and meanwhile the comfort level of passengers is improved.

The invention relates to a multilayer special-shaped section sound absorption material and a preparation method thereof. The multilayer special-shaped section sound absorption material comprises a special-shaped layer, a bottom layer and a plurality of supporting assemblies evenly distributed between the special-shaped layer and the bottom layer. The supporting assemblies, the special-shaped layer and the bottom layer define a cavity. The special-shaped layer is of a multi-layer laminated structure, and the multiple layers are independently selected from any one of a linear layer, a circular layer and a pentagram-shaped layer and are different from one another; wherein the cross section of fibers used by the straight-line-shaped layer is straight-line-shaped; the cross section of the fiber used by the circular layer is circular; and the section of the fiber used by the pentagram-shaped layer is pentagram-shaped. When sound waves penetrate through the special-shaped layer, the sound waves can be reflected back and forth and spread among the linear layer, the circular layer and the pentagram-shaped layer of the special-shaped layer, and therefore sound energy can be further consumed, and the multilayer special-shaped section sound absorption material has good sound absorption performance.

The utility model discloses a fireproof acoustic board not easy to fall off, and relates to the technical field of acoustic boards, the fireproof acoustic board comprises a frame body, the interior of the frame body is of a hollow structure, cover plates are arranged on the two sides of the frame body, and a polyester fiber board, a foam board, a silencing board and a waterproof impermeable board are sequentially arranged in the frame body; a decorative layer is arranged on one side of the frame body, and the frame body is connected with the cover plate through bolts. The fireproof acoustic board is reasonable and reliable in structure, installation of various laminates is achieved through the frame body, it can be guaranteed that after the acoustic board is used for a long time, the laminates cannot fall off due to failure of the bonding strength, durability of the acoustic board is guaranteed, and meanwhile the fireproof acoustic board is not prone to falling off. The fireproof performance of the acoustic board can be improved through the arrangement of the fireproof coating, when a fire occurs, the coating can effectively prevent flame from spreading, the acoustic board is safer and more reliable when the fire occurs, and therefore the building structure and personnel safety are protected.

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.

This utility model provides a composite perforated wood-plastic composite sound-absorbing wall panel, relating to the technical field of building materials. The composite perforated wood-plastic composite sound-absorbing wall panel comprises, from top to bottom, a veneer layer, a wood-plastic composite layer, and a sound-absorbing layer. The veneer layer has evenly distributed through-holes, and the wood-plastic composite layer has sound-absorbing grooves. The through-holes and sound-absorbing grooves are interconnected, and the sound-absorbing grooves are dovetail grooves. The total thickness of the wall panel is ≤19mm. This utility model achieves a significant improvement in the sound absorption performance of the composite wall panel by designing through-holes in the veneer layer, designing sound-absorbing grooves communicating with the through-holes in the wood-plastic composite layer (designing the sound-absorbing grooves in the dovetail groove form), and then designing a sound-absorbing layer on the bottom surface of the wood-plastic composite layer. The sound absorption principle of this utility model is: using the Helmholtz resonance principle, combined with the oblique wall reflection of the dovetail groove and the excellent sound absorption performance of the wood-plastic composite material itself, to achieve a synergistic effect and significantly improve the sound absorption performance of the composite wall panel.

This utility model discloses a petal-shaped sound-absorbing lamp, relating to the field of architectural decoration technology. It includes a lamp body and a sound-absorbing component. The sound-absorbing component is mounted on the lamp body and comprises a mounting frame and sound-absorbing blades. The mounting frame has slots around its circumference, and the sound-absorbing blades are connected to the mounting frame via these slots. All sound-absorbing blades are angled clockwise. A power cord perforation is located in the center of the mounting frame. By using a petal-shaped sound-absorbing component and a wire rope perforation along the circumference of the power cord perforation on the mounting frame, the surface area of ​​the sound-absorbing component is increased several times compared to traditional one-piece sound-absorbing components, significantly improving the lamp's sound absorption effect. Furthermore, the sound-absorbing blades of the component are installed using a plug-in method, allowing for easy adjustment of the surface area of ​​the sound-absorbing panels according to actual needs, enabling adjustment of noise reduction strength to meet different usage requirements and scenarios.

The invention discloses a preparation method of a wide-temperature-range high-damping metal hollow sphere / polyurethane damping composite material, and relates to a preparation method of a damping composite material. The method comprises the following steps: 1, carrying out surface modification on metal hollow spheres; and 2, preparing the polymer. Compared with pure polyurethane, the prepared wide-temperature-range high-damping metal hollow sphere / polyurethane damping composite material has the advantages that the damping performance is greatly improved, the temperature range is widened, the excellent damping performance and acoustic performance are achieved, the preparation process is simple, the stability is high, and the composite material is suitable for large-area pouring and complex-shape base materials; wide application prospects are realized in the fields of ships, aerospace, vehicles, building materials and the like; after the surface-modified metal hollow spheres are compounded with polyurethane, the damping performance can be greatly improved, the temperature range is widened, the loss factor is increased from 0.45 to 0.85, and the effective temperature range is widened from 59.9 DEG C to 100 DEG C or above.

The application discloses a staggered and stacked wave-shaped sound barrier with a multilayer composite sound absorption structure and relates to the technical field of sound absorption equipment. The technical scheme is as follows: the sound barrier comprises an I-shaped stand column and a multilayer sound absorption assembly, the multilayer sound absorption assembly is arranged on one side of the I-shaped stand column, the multilayer sound absorption assembly is used for absorbing noise, the multilayer sound absorption assembly comprises a bottom plate, a side plate, an outer sound absorption plate and an inner sound absorption plate, recesses one and two are formed in the top surface of the bottom plate, recesses three and four are formed in the inner side of the side plate, the multilayer sound absorption assembly and the clamping and replacing assembly are used, the multilayer staggered sound absorption structure and the air layer can be used for more sufficient sound absorption, the inner sound absorption plate can be prevented from being blocked, and noise can be fully absorbed and reduced from multiple angles.

This invention discloses a meltblown material with antibacterial and sound-insulating properties, its preparation method, and its application, relating to the field of meltblown fabric production technology. By adjusting the spinning equipment, the angle θ between the spinneret and the condensing screen, the vertical distance L between them, and other process parameters, the fiber packing pattern and packing density can be altered to obtain a meltblown material with a three-dimensional structure. This increases the specific surface area of ​​the meltblown material, effectively improving its sound absorption and heat insulation effects under the same resistance conditions, and also exhibiting good antibacterial properties. Furthermore, it improves the uniformity of the transverse fibers in the meltblown fabric, reduces the difference in mechanical properties between the transverse and longitudinal directions, increases the fiber bonding strength during the meltblowing process, and thus increases the mechanical strength of the meltblown material. This effectively mitigates the problem of decreased sound absorption efficiency in the obtained meltblown material, and the resulting meltblown material has high bulkiness.

The utility model relates to the technical field of aerated bricks, in particular to a regenerative porous sound-absorbing and heat-insulating aerated brick which comprises a regenerative plate base body, the center of the end face of the tail end of the regeneration plate base body is provided with a positioning square groove, the outer side of the regeneration plate base body is coated with a heat insulation layer, the outer side of the heat insulation layer is coated with a functional layer, the outer side of the functional layer is coated with a sound guide layer, the outer side of the sound guide layer is coated with a protective layer, and the outer side of the protective layer is coated with a waterproof layer. A combined square groove is formed in the inner wall of the tail end of the protective layer, and a blocking layer is installed in the tail end of the protective layer. The regenerated plate base body is mainly composed of building waste, the utilization rate of regenerated materials is improved, meanwhile, the whole aerated brick is composed of a multi-layer structure, the strength of the whole aerated brick is improved, stability of whole forming can be improved according to combination of the plugging layers, and stability of combined positioning is improved through the positioning blocks and the limiting square blocks arranged on the plugging layers.

The utility model discloses a waterproof slotted curtain wall structure which comprises an inner keel, an outer keel and a plurality of outer keels, the inner keel comprises a plurality of first vertical keels installed on the outer vertical face of a building structure and a plurality of first transverse keels connected between every two adjacent first vertical keels; the heat preservation base plate is laid on the outer side of the inner keel; the waterproof layer comprises a polyurethane layer, a fireproof mortar layer and a waterproof roll layer, wherein the polyurethane layer is coated on the side, away from the inner keel, of the heat preservation base plate, the fireproof mortar layer is coated on the outer side of the polyurethane layer, and the waterproof roll layer is laid on the outer side of the fireproof mortar layer. The outer keel comprises a plurality of second vertical keels and a plurality of second transverse keels, the second vertical keels are connected to the heat preservation base plate through cantilever rods, and the second transverse keels are installed on the second vertical keels through fasteners; the metal curtain wall plate comprises a plurality of unit plates, the unit plates are installed on the second transverse keel through supports, and an abutted seam is formed between every two adjacent unit plates. The problem that an existing slotted metal curtain wall system is insufficient in waterproof performance is solved.

The invention relates to the technical field of macromolecular polyurethane foaming materials, and mainly relates to a preparation method of environment-friendly combined polyether for a polyurethane foaming material, the environment-friendly combined polyether comprises the following components in parts by weight: 10-18 parts of starch-based low polyether and the balance of polyether polyol, and the total weight is 100 parts. The preparation method of the environment-friendly combined polyether comprises the following steps: drying treatment, pretreatment, catalyst addition, initiator polyol addition, esterification reaction, grafting reaction, viscosity adjustment and mixing. The starch-based low-polyether is prepared by taking common and cheap corn starch as a main component, and the starch-based low-polyether is mixed with polyether polyol to form the environment-friendly combined polyether for the polyurethane foaming material, so that the aims of taking the starch-derived polyether as a raw material and improving the environment friendliness of the polyurethane foaming material are fulfilled, and the production cost is low.

The utility model provides a kind of road noise barrier based on sound-absorbing material, including barrier support assembly and barrier body, barrier support assembly includes the barrier support post of pair arrangement, and the sliding slot upper end of barrier support post is connected with buffer sliding block, and one barrier hanging pole is connected between buffer sliding block, barrier hanging pole is connected with barrier assembly support by hinged link, and barrier assembly support is connected with barrier body by bolt.The utility model in barrier body is converted into heat energy dissipation by the sound hole hole of sound hole board body, and the sound-absorbing micropore on microporous attraction cloth layer is based on micro-perforated plate theory, and the sound-absorbing coefficient is excellent in full frequency band, especially in low frequency part, further improve sound-absorbing effect, significantly improve the sound-absorbing performance of low frequency band by sound-absorbing cotton layer, and the porous structure of sound-absorbing cotton layer effectively insulates internal air convection and heat radiation, significantly reduce heat loss, while large aperture area absorbs and reflects sound wave, effectively reduce noise.

The utility model relates to the technical field of prefabricated wallboards, in particular to an assembly type building sound insulation and heat insulation prefabricated wallboard which comprises a prefabricated wallboard body, a first assembly block is fixedly connected to the bottom of the outer side of the prefabricated wallboard body, and a second assembly block is fixedly connected to the top of the outer side of the prefabricated wallboard body. A sliding groove is formed in the middle of the outer side of the prefabricated wallboard body, the prefabricated wallboard body is slidably connected with a movable connecting block through the sliding groove, and pouring grooves are formed in the two sides of the prefabricated wallboard body. The prefabricated wallboard has the advantages that the first assembly block and the second assembly block are respectively arranged at the bottom and the top of the prefabricated wallboard body, so that a gap between the upper part and the lower part of the wallboard can be covered by the assembly blocks when the prefabricated wallboard body is butted with each other; the step of smearing concrete between the prefabricated wallboards is omitted, so that the adaptation degree between the prefabricated wallboard bodies is improved, and the situation that gaps between the wallboards affect the poor sound insulation and heat insulation effects of the prefabricated wallboards is avoided.

The invention relates to the technical field of textiles, and discloses a preparation process of a light-weight environment-friendly automotive trim non-woven fabric. According to the process, three layers of fiber components including regenerated polyester, bio-based polyester and natural fibers are prepared; a sandwich structure is constructed by adopting multi-guide-bar parallel net forming, online electrostatic spinning is performed on a bio-based microporous membrane between layers, and low-melting-point hot melt adhesive powder is applied; and after needling reinforcement and gradient hot air curing are conducted, far infrared preheating is combined with a cold pressing mold for hot punching forming. While the gram weight is reduced, the sound absorption coefficient is improved, and the sound absorption material has excellent flame retardance, self-cleaning performance and full-life-cycle closed-loop recycling capacity.

The utility model relates to the technical field of range hoods, and provides a mute plate and a range hood. The mute plate comprises a perforated plate, a plurality of small holes are formed in the surface of one side of the perforated plate, a plurality of cavities which are not communicated with one another are formed in the inner side of the perforated plate, the small holes are communicated with the cavities to form a plurality of Helmholtz resonant cavities, and at least two Helmholtz resonant cavities are different. According to the mute plate provided by the utility model, the plurality of different Helmholtz resonant cavities are connected in parallel, so that noise with different frequencies generated by the range hood can be effectively absorbed and reduced, and a better sound absorption effect is realized. Therefore, the interference of noise to the living environment can be reduced, the living comfort is improved, and the hearing health of the user can be protected.

The invention discloses a centripetal porous aerogel and a preparation method and application thereof. The centripetal porous aerogel comprises a polymer matrix framework and polysiloxane deposited on the polymer matrix framework, wherein the polymer matrix framework is obtained by esterification reaction of bacterial cellulose and polycarboxylic acid, and the centripetal porous aerogel has a centripetal porous structure. The centripetal porous aerogel provided by the invention has a centripetal porous structure, which can give the material low density, negative Poisson's ratio characteristics, excellent sound absorption and noise reduction performance, excellent thermal insulation performance and efficient oil-water separation ability, and the porous sound-absorbing and thermal-insulating aerogel can be widely used in sound-absorbing materials, thermal insulation materials, and oil-water separation materials.

The invention discloses a copper-based powder metallurgy friction material containing composite iron powder and a preparation method of the copper-based powder metallurgy friction material. The friction material is prepared from, by weight, 45%-60% of electrolytic copper powder, 10%-20% of the composite iron powder, 10%-15% of granular graphite, 1%-5% of barite, 3%-6% of tungsten oxide, 2%-4% of high-carbon ferrochrome, 2%-4% of silicon dioxide and 1%-2% of porous zirconium carbide ceramic. Compared with the prior art, the friction material has the positive effects that the iron powder prepared by two different processes is added into the friction material, and optimal granularity matching is carried out, so that the strength and the hardness of the material are improved, and meanwhile, the noise generated in the braking process is effectively reduced. According to the invention, the porous zirconium carbide ceramic is added into the friction material, so that the heat resistance of a brake pad can be improved, the stability of a friction coefficient is ensured, and vibration and noise during braking are reduced.

This utility model provides an aluminum profile structure for an assembly line with a silent guide rail, comprising: an aluminum profile body with rounded edges at the corners; a first mounting area and a second mounting area respectively located on the upper and lower parts of the aluminum profile body; protective baffles and a first sound-absorbing part on both sides of the top of the first mounting area to reduce noise generated by friction during contact. The aluminum profile structure for an assembly line with a silent guide rail provided by this utility model features rounded edges for enhanced safety; modular partitioning of the aluminum profile body into a first and second mounting area; and a silent guide rail assembly that works in conjunction with the first and second sound-absorbing parts to ensure smooth operation and prevent deviation. Simultaneously, multi-frequency noise reduction is achieved through elastic deformation and sound wave scattering, enhancing the sound absorption effect. Weight-reducing holes reduce weight while maintaining strength; and the first and second accessory mounting slots support external device expansion, forming a lightweight, low-noise, and highly adaptable silent assembly line system.

The utility model relates to a multi-layer composite sound-absorbing board, and discloses a multi-layer composite sound-absorbing board which is provided with a double-layer sound-absorbing core board, and sound-absorbing frequency range is expanded and sound-absorbing effect is improved through different shapes, sizes, densities and arrangement modes of sound-absorbing micropores on the double-layer sound-absorbing core board. The utility model discloses a sound-absorbing composite board which is characterized by comprising a first sound-absorbing micropore, a first sound-absorbing core board, a second sound-absorbing core board, a sound-absorbing mat, a sound-absorbing frame, a connecting groove, a second sound-absorbing micropore and a connecting lock catch, the sound-absorbing mat is arranged in the sound-absorbing frame, the connecting groove is formed in the side face of the sound-absorbing frame, the second sound-absorbing core board is arranged in the sound-absorbing frame and located on the sound-absorbing mat, and the connecting lock catch is arranged on the second sound-absorbing micropore. The first sound-absorbing core plate is arranged in the sound-absorbing frame and located on the second sound-absorbing core plate, the second sound-absorbing core plate is provided with second sound-absorbing micropores, the first sound-absorbing core plate is arranged in the sound-absorbing frame and located on the second sound-absorbing core plate, the first sound-absorbing core plate is provided with first sound-absorbing micropores, and the side face of the first sound-absorbing core plate is provided with connecting lock catches corresponding to the connecting grooves.

This utility model relates to the field of honeycomb panels, and more particularly to a fireproof and soundproof honeycomb panel for curtain walls. It includes a fixed frame and a honeycomb core. From top to bottom, a top plate, a first partition, a second partition, and the honeycomb core are sequentially installed on the inner wall of the fixed frame. The top plate has several through holes arranged in an equidistant array at its upper and lower ends. The first partition has several first slots arranged in an equidistant array at its upper and lower ends, with the through holes communicating with the first slots. Second slots are formed on the inner walls of each of the first slots. The second partition has several grooves arranged in an equidistant array at its upper and lower ends, each groove containing cotton blocks. Mesh plates are fixed to both the upper and lower ends of the second partition. This utility model achieves sound absorption and heat insulation effects through the added partition structure. It reduces the sound waves entering the through holes by rebounding, and the cotton blocks reduce heat transfer, thereby improving the sound absorption and fire resistance of the honeycomb panel and meeting the basic requirements of curtain walls.

The utility model relates to the technical field of sound insulation boards, in particular to a building sound insulation board which comprises a multi-layer composite sound insulation board, and the multi-layer composite sound insulation board is sequentially provided with a first aluminum alloy board, sound absorption foam, a second aluminum alloy board and a gypsum board in an abutting mode from inside to outside. Sound-absorbing foam is adaptively embedded in a side baffle A on the periphery of the outer side of the first aluminum alloy plate, the outer side of the sound-absorbing foam is adaptively embedded in a side baffle B of the second aluminum alloy plate, an angle bead B and an angle bead A are integrally arranged on the top faces of the side baffle B and the side baffle A respectively, and a plurality of sliding blocks are adaptively embedded in any two pairs of opposite angle bead B and angle bead A bodies. The sliding blocks fix the sound absorption foam by locking the first aluminum alloy plate and the second aluminum alloy plate. The multi-layer composite sound insulation board is convenient to construct and good in sound insulation effect.