256 results about "Acoustical insulator" patented technology

The invention discloses a self-adaptive noise reduction method for a positive pressure type air respirator based on airflow spectrum characteristics, and relates to the technical field of positive pressure type air respirators.The self-adaptive noise reduction method comprises the steps that a respirator air path pressure signal and an environment noise signal are synchronously collected through an airflow sensor and a microphone array; performing time-frequency analysis on the collected signals, and extracting airflow spectrum features; and establishing a mapping relation between the working state of the breathing machine and the noise spectrum based on the historical record according to the mapping relation between the working state of the breathing machine and the noise spectrum. Through real-time acquisition and analysis of airflow frequency spectrum characteristics, accurate identification of useful airflow signals and environmental noise signals, dynamic adjustment of noise reduction parameters, effective suppression of high-frequency noise and low-frequency vibration, and improvement of noise reduction effect, compared with a traditional fixed frequency band filtering or passive sound insulation material, the method can better cope with a non-stationary noise environment, and has good application prospects. The noise reduction strategy is adjusted in real time, clear auditory information is provided in a complex noise environment, and therefore the auditory perception ability of firemen is improved.

The invention relates to the technical field of material analysis, and discloses an intelligent raw material composition screening method and system based on a sound insulation material, and the method comprises the steps: collecting acoustic characteristic test data, microstructure data and chemical composition data of a candidate sound insulation material; performing frequency response curve decomposition on the acoustic characteristic test data to obtain a characteristic frequency band sound absorption coefficient, and constructing an acoustic impedance tensor of the sound insulation material to analyze the sound wave dissipation performance of the candidate sound insulation material; calculating the pore distribution entropy and connectivity index of the candidate sound insulation material to analyze the sound wave propagation retardation efficiency of the candidate sound insulation material; analyzing the molecular chain flexibility and interfacial compatibility of the candidate sound insulation material to evaluate the acoustic performance stability of the candidate sound insulation material for multi-component compounding; and screening a target material from the candidate sound insulation materials by using sound wave dissipation performance, sound wave propagation retardation efficiency and acoustic performance stability. The performance matching degree of the raw materials screened out of the sound insulation material in actual composite use can be improved.

The invention relates to a multi-layer sound absorption and insulation material and a preparation method thereof.The multi-layer sound absorption and insulation material comprises an inner micropore sound absorption layer, a vibration attenuation damping layer, a sound insulation plate layer, a main frame layer, a sound absorption material layer and an outer steel plate layer which are sequentially arranged from inside to outside, a plurality of hollow glass balls are evenly arranged in the main frame layer, and the sound absorption material layer is obtained by pressing multiple layers of composite sound materials; the composite acoustic material comprises the following raw materials in parts by weight: 10-15 parts of fibers, 4-8 parts of an adhesive, 3-8 parts of a foaming agent, 1-3 parts of a flame retardant, 10-20 parts of a plasticizer, 10-20 parts of resin, 1-3 parts of a lubricant, 5-10 parts of an organic sound absorber and 1-5 parts of an antioxidant. According to the sound absorption and insulation material, the inner micropore sound absorption layer, the vibration reduction damping layer, the sound insulation plate layer and other multi-layer structures are arranged from inside to outside, all the layers have a synergistic effect, sound wave propagation can be dealt with from multiple aspects, and the sound absorption and insulation material is suitable for various places with requirements for the acoustic environment, such as the fields of building sound insulation, industrial equipment noise reduction and the like.

The invention relates to the related technical field of building sound insulation materials, in particular to a building heat preservation and sound insulation wall which comprises a building wall body, a vertical main keel, a transverse auxiliary keel and a sound insulation board, the vertical main keel is fixed to the building wall body, and the transverse auxiliary keel is fixedly connected to the vertical main keel; a plurality of transverse auxiliary keels are arranged between the adjacent vertical main keels at equal intervals, the sound insulation plate is positioned and fixed on the transverse auxiliary keels, the sound insulation plate comprises a bottom plate layer, a sound insulation layer and a panel layer, the inner side face of the sound insulation layer is fixedly connected with the bottom plate layer, and the outer side face of the sound insulation layer is fixedly connected with the panel layer; the building heat preservation and sound insulation wall is formed by combining the building wall body, the vertical main keels, the transverse auxiliary keels and the sound insulation plate, the sound insulation plate is formed by combining the bottom plate layer, the sound insulation layer and the face plate layer, the sound insulation groove is formed in the sound insulation layer, and the sound absorption cotton is filled in the sound insulation groove, so that the overall strength of the sound insulation plate is guaranteed, and meanwhile the sound insulation effect is improved. And the overall sound insulation and heat preservation effects of the sound insulation plate can be fully ensured.

The invention relates to the technical field of sound insulation materials, in particular to an automobile sound insulation pad and a preparation method thereof. An automobile sound insulation pad comprises a sound insulation layer and a sound absorption layer, and the sound insulation layer comprises 10-20 parts of first TPU particles, 10-20 parts of second TPU particles, 70-120 parts of filler, 1-2 parts of a coupling agent, 5-10 parts of a plasticizer, 2-5 parts of carbon black, 1-2 parts of an antioxidant and 1-2 parts of a lubricant; the density of the first TPU particles is 1.2-1.3 g / cm < 3 >, and the hardness is 50-60 SHD; the density of the second TPU particles is 1.2-1.3 g / cm < 3 >, and the hardness is 60-80 SHA; the sound absorption layer is a PU foaming layer. The PU is similar to the TPU in structure and can be directly foamed on the TPU, pretreatment steps such as flame treatment and plasma treatment are not needed, and the treatment process is simple. The obtained sound insulation pad is made of the same material (polyurethane) and can be integrally recycled, so that resource waste and environmental pollution are reduced.

The invention relates to the field of sound insulation materials, in particular to an environment-friendly automobile interior sound insulation material and a preparation method thereof. An environment-friendly automobile interior sound insulation material comprises a mass layer and a sound absorption layer, the mass layer is made of PET and PP composite non-woven fabric, and the weight of the mass layer is 1500-1700 g / m; the sound absorption layer is made of PET non-woven fabric, and the weight of the sound absorption layer is 400-500 g / m. The mass layer is made of PET and PP composite non-woven fabric, the weight reaches 1500-1700 g / m, and by means of the high surface density and composite structure, transmission of low and medium frequency noise of an engine, a road surface and the like can be effectively blocked; the sound absorption layer is a PET non-woven fabric of 400-500 g / m, the porous structure of the sound absorption layer can absorb medium-high frequency noise, and full-band sound insulation is achieved through combination of the quality layer and the sound absorption layer.

The utility model relates to the field of wooden doors, and discloses a combined wooden door which comprises a bottom plate, second rectangular grooves are formed in the two symmetrical ends of the top of the bottom plate, a face plate and a back plate are arranged on the two sides of the top of the bottom plate respectively, clamping strips are fixed to the two symmetrical side walls of the face plate and the two symmetrical side walls of the back plate, and a plurality of partition plates are fixed to the inner side wall of the back plate at equal intervals. Noise reduction cotton is fixed to the tops of the partition plates, a top plate is arranged at the top of the panel, first rectangular grooves are formed in the two symmetrical ends of the top of the top plate, and a fixing assembly used for fixing the panel and the back plate is arranged at the top of the bottom plate. The wooden door adopts a modular design and is formed by splicing a plurality of components, so that the wooden door is convenient to transport and install, when the wooden door is locally damaged, only the damaged components need to be replaced, the whole wooden door does not need to be replaced, resources are saved, the use cost is reduced, and the practicability is improved; the sound insulation material silencing cotton is added between the face plate and the back plate, noise is effectively isolated, and the sound insulation effect is improved.

The utility model discloses an environment-friendly sound insulation composite board which comprises a sound insulation composite board body, a sealing assembly is connected to the outer portion of the sound insulation composite board body, and an assembling assembly is connected to the outer end of the sealing assembly. The triangular inclined faces are used for reflecting sound waves and reducing the transmission direction of sound, so that the purpose of improving the sound insulation effect is achieved, more sound energy can be absorbed through the honeycomb-shaped hole-shaped structure, the transmission of the sound is reduced, the noise insulation effect is further improved, the main sound insulation board is formed by splicing multiple layers of environment-friendly sound insulation materials, and the sound insulation effect is improved. According to the sound insulation board, the influence on the environment can be reduced while noise is absorbed, the sound insulation board is more environmentally friendly, and the problem that the noise insulation effect is difficult to improve due to the fact that a sound insulation board in a comparative patent is of a rectangular structure, and the noise is difficult to efficiently isolate through the special shape of the sound insulation board is solved.

The invention relates to a method for preparing a gelling sound insulation material by foaming and mineralizing alkali-activated magnesium slag, and belongs to the technical field of resource utilization of industrial solid wastes. The preparation method comprises the following steps: mixing magnesium slag, water, an alkali activator, a functional activator, a foam stabilizer and a foaming agent to obtain homogeneous slurry, pouring, curing and forming, and demolding; and after demolding is finished, carrying out mineralization reaction to obtain the gelling sound insulation material. After alkali excitation and foaming treatment, the prepared gelling sound insulation material has certain strength and stability, the highest strength can reach 24.41 MPa, the sound insulation amount can reach 87.41 dB under the frequency of 6500 Hz, the sound absorption coefficient is 0.89, and excellent physical properties are shown. The method is simple in preparation process, mild in condition and easy to industrialize. According to the method, a new way, a new method and a new shortcut are discussed for fixing the carbon dioxide while the available way of the magnesium slag is expanded, and the purpose of treating waste with waste is achieved.

The invention relates to a sound insulation parameter optimization method and device, equipment, a medium and a program product, and relates to the technical field of data processing. The method at least solves the technical problems that in the prior art, the optimization effect on sound insulation parameters of a vehicle is poor, and the efficiency of determining the sound insulation parameters of the vehicle is low, and comprises the steps that multiple sets of first parameter values of the sound insulation material are determined based on at least one type of parameter of the sound insulation material of the vehicle and the first parameter range of each type of parameter; determining a whole vehicle acoustic performance parameter corresponding to each group of first parameter values in the plurality of groups of first parameter values, wherein the whole vehicle acoustic performance parameter is used for indicating the sound insulation performance of the vehicle; on the basis of the multiple sets of first parameter values and the whole vehicle acoustic performance parameters corresponding to each set of first parameter values, first optimization parameter values of at least one type of parameters are determined, the first optimization parameter values are parameter values which are determined on the basis of an agent model and enable the sound insulation performance of the vehicle to be optimal, and the agent model is obtained on the basis of the multiple sets of first parameter values.

The invention relates to a sound insulation and noise reduction composite material and a preparation method and application thereof, and belongs to the technical field of sound insulation materials. The sound insulation and noise reduction composite material comprises a first polyvinyl chloride layer, a second polyvinyl chloride layer, a silicone rubber sound absorption layer and a butyl damping layer which are sequentially arranged in an attached mode. The center lines of the through holes in the first polyvinyl chloride layer coincide with the center lines of the through holes in the second polyvinyl chloride layer, it can be ensured that the through holes in the first polyvinyl chloride layer and the second polyvinyl chloride layer are combined to form a shape similar to a horn mouth, sound is gradually weakened, and the effects of sound insulation and decoration are achieved; the silicone rubber sound-absorbing layer is an elastic body, so that the transmission of upstairs and downstairs collision sound can be further reduced; the butyl damping layer can block the transmission of collision sound upstairs and downstairs, and the butyl material has certain adhesiveness and can be adhered to a floor and other parts needing noise reduction, so that positioning is convenient.

The invention discloses a sound insulation adhesive film and a preparation method and application thereof, and relates to the field of sound insulation materials. The sound insulation adhesive film comprises the following components in parts by weight: 90-100 parts of matrix resin; 23-30 parts of a plasticizer; 5-10 parts of a grafting agent; the grafting agent is selected from isocyanate uracil dimer; the mass content of hydroxyl in the matrix resin is 18-21% in percentage by weight, so that the vibration energy absorption capacity of the sound insulation adhesive film can be remarkably improved, the sound insulation effect is improved, and the impact resistance of the sound insulation adhesive film is improved.

The invention provides a high-strength sound-insulation fireproof composite board, and relates to the technical field of composite boards. The frame body is of an H-shaped structure, and aerogel is arranged at the two ends of the inner side of the frame body; the frame body is provided with the sound insulation plates, the sound insulation plates are symmetrically arranged at the two ends of the inner side of the frame body, noise sound waves penetrate through the fireproof plates and then are reflected and refracted multiple times in the spiral sound absorption holes, the sound wave propagation path is effectively disturbed, the efficient sound absorption characteristic of aerogel is matched, and a multi-stage attenuation mechanism for noise of different frequency bands such as high frequency and low frequency is formed. Compared with a traditional single-material sound insulation mode, the composite structure breaks through the bottleneck of sound insulation performance, can meet the noise reduction requirements in complex noise environments such as building decoration and industrial factory buildings, and solves the problems that a traditional board mostly depends on a single sound insulation material to achieve the noise reduction function, systematic acoustic structure design and the material synergistic effect are lacked, and the noise reduction effect is poor. The noise reduction requirements in complex noise environments such as high frequency, low frequency and the like are difficult to meet.

A fan acoustic casing system may include one or more casing sidewalls configured to at least partially define a cavity configured to receive the one or more fans. A casing sidewall may be configured to rotate between an open position or a closed position via a rotation mechanism, where one or more surfaces of the one or more casing sidewalls may be coupled to one or more acoustic insulation pads formed of one or more acoustic insulation materials to reduce vibrational noise. The system may include one or more sidewall fastening members configured to couple a casing sidewall to an additional casing sidewall. The system may include a mounting assembly including one or more mounting members configured to removably couple the fan casing assembly to a panel of a cabinet.

The utility model relates to the field of noise reduction equipment, specifically disclose a sound attenuation room of reducing noise, including a plurality of by the sound attenuation room main part of inner panel and outer panel, the sound attenuation room main part is connected each other through the connecting structure to form a casing with the cavity, the sound attenuation room main part adopts integrated structure, constitutes by the wallboard of Q235A material, ceiling and access door, and ceiling can be individually detached, the sound attenuation room is filled with fire -resistant sound attenuation cotton, and the fire -retardant sound attenuation cotton is cut even neat and tightly wrapped in the wallboard, the utility model provides a sound attenuation room of reducing noise, through the connecting design of optimization air duct and wallboard, reasonable layout equipment, adopt sound insulation material and set up sound attenuation device etc.

To provide a lightweight material exhibiting an excellent sound insulating effect.SOLUTION: A sound insulating material 1 comprising a resin composition 2 in which cellulose nanofibers 3 are dispersed is used.SELECTED DRAWING: Figure 1

The present invention relates to the field of building construction technology, specifically to a decorative panel for building decoration, comprising a base plate, a surface of the base plate provided with a sound insulation component, and a surface of the base plate provided with an assembly component; the beneficial effect is: the decorative panel for building decoration and the cutting equipment proposed by the present invention can facilitate workers to install multiple decorative panels with each other through the mutual cooperation between the base plate, protrusions, grooves, sound insulation sponge layer, first glue, fireproof layer, second glue, surface protection layer and other structures, so that they are pieced together into a whole, and can be in a parallel and stable state, reducing the probability of deviation between adjacent panels during installation, and at the same time can facilitate workers to carry out installation work without the need for workers to carefully carry out docking between the two, and at the same time use sound insulation materials to improve the sound insulation effect during use, avoiding affecting the normal rest of neighbors.

The utility model discloses a magnetorheological sound insulation cotton damping with anti -interference structure relates to sound insulation material technical field, including sound insulation cotton layer and anti -interference structure layer. The composite electromagnetic shielding layer of the magnetorheological sound insulation cotton damping with anti -interference structure outermost layer is alternately woven composite by nanometer copper net and graphene film, can be all -round shielding to electromagnetic interference, creates stable electromagnetic environment for the inside magnetorheological liquid filling cavity, effectively avoids the outside electromagnetic signal interference magnetorheological liquid response to the magnetic field, guarantees its rheological characteristic stable play, the three -dimensional shock attenuation layer of inner layer adopts the even arrangement of hexagonal honeycomb -like elastic rubber film and viscoelastic damping block, and is matched with interval distribution's shock attenuation spring and shock attenuation rubber block, can form multistage shock attenuation system, effectively absorbs and buffers mechanical vibration, greatly reduced the influence of outside vibration to sound insulation cotton layer and magnetorheological liquid filling cavity, has improved the reliability of product under complex vibration environment significantly.

This invention belongs to the field of building materials technology, specifically disclosing a sound-absorbing porous foamed concrete composite board and its preparation method. Using foamed concrete as the substrate of the composite board effectively solves the problem of poor environmental performance of traditional sound insulation materials. Compared with materials such as polystyrene and sound-absorbing rock wool, it does not require a large amount of energy for preparation and can utilize recycled raw materials. It does not produce toxic powder after aging, reducing harm to the air environment and human health, while also avoiding the flammability hazards of traditional materials. The closed-cell sound insulation layer's sealed pores can block direct sound wave penetration, achieving basic sound insulation. The sound-absorbing pores of the porous sound-absorbing layer, combined with the interconnected channels, introduce incident sound waves into the interior. Energy is dissipated through reflection and friction within the channels, forming a dual protection of "sound absorption and sound insulation." This solves the core problem of poor sound insulation performance of traditional concrete and compensates for the short lifespan of traditional sound insulation materials, extending the overall service life of the board.

The invention discloses a sound insulation and noise reduction decorative sheet, which comprises a soft marine phase structure and an island phase structure, wherein the soft marine phase structure takes 2-carbon, 3-carbon, 4-carbon and n-carbon elastomer / resin / rubber as a base material; the island phase structure takes natural or synthetic inorganic / organic filler or a mixture of the natural or synthetic inorganic / organic filler; the island phase structure filler is distributed and filled in the marine facies structure in different structural shapes, and a microstructure which reflects and absorbs sound waves for multiple times is formed between the island phase structure filler and the marine facies structure layer. The sound insulation coiled material has the beneficial effects that energy in noise is absorbed and converted into heat energy by utilizing the viscous damping effect of a soft high polymer material in the marine phase on sound waves, and the sound waves are reflected by a hard structure in the island phase, so that the noise is reflected and absorbed for multiple times in the micro island structure of the sound insulation coiled material, and the noise reduction effect is achieved; the problem that a traditional polyurethane sound insulation material needs to reach the thickness of 3-5 cm to achieve a good sound insulation effect is solved, and when the thickness is reduced to 2.5 mm, the good sound insulation effect can be achieved without causing space loss.

The utility model discloses a keel with a high sound insulation effect, which relates to the technical field of keels and comprises a keel frame, the keel frame is S-shaped and is symmetrically provided with two groups of rock wool, an installation space is reserved between the two groups of rock wool, and a fire-resistant gypsum board is arranged on the keel frame. The three sets of fire-resistant gypsum boards are located on the two sides and the middle of the keel frame respectively, the middle of the keel frame is provided with a sound insulation felt, and by arranging the sound insulation felt, when the keel with the high sound insulation effect is used, the sound insulation felt is arranged in the space between the two sets of rock wool and located in the middle of the keel frame; the sound insulation felt can effectively prevent sound from spreading, can absorb sound wave energy in the air, and reduces the possibility that the sound penetrates into other areas or rooms, so that the problems that a single partition plate material is poor in sound insulation effect, and sound spreading and penetrating can be caused due to lack of sound insulation materials are effectively solved.

The invention provides a noise reduction air source heat pump which comprises a movable frame, an air source heat pump body and a sound insulation cover are arranged on the movable frame, the air source heat pump body is located in the sound insulation cover, the top of the air source heat pump body penetrates out of the sound insulation cover, first noise reduction holes are evenly formed in the inner side face of the sound insulation cover, and a sound insulation space is formed in the sound insulation cover. The sound insulation space is filled with sound insulation cotton. Compared with the prior art, the noise reduction device has the following beneficial effects that the semicircular sound insulation cover, the I-shaped sound inlet barrel and the combined noise reduction piece of the cross frame are arranged in the air inlet and outlet frame, and multiple times of refraction and attenuation of sound waves are achieved through the multiple layers of noise reduction holes, namely, the second noise reduction hole, the third noise reduction hole and the fourth noise reduction hole; the sound wave propagation path can be prolonged through the structure of the I-shaped sound inlet barrel, the sound wave energy is further segmented through the cross frame, multi-stage filtering of airflow noise and equipment operation noise is achieved in cooperation with the sound insulation material, the noise reduction effect of the air inlet and outlet channel is greatly improved, and finally the noise reduction function of the air source heat pump is achieved.

The present invention relates to a partition wall structure, which is used for partitioning steel structure building space. The partition wall structure comprises: a keel layer, the keel layer comprises a first keel and a second keel, the first keel is arranged parallel to one side of the second keel, a first filling layer and a second filling layer are arranged in the skeletons of the first keel and the second keel respectively, a first fireproof layer is arranged on the side of the first keel away from the second keel, and a second fireproof layer is arranged on the side of the second keel away from the first keel, and a steel structure component passes through and is connected to the first fireproof layer, the first keel, the second keel and the second fireproof layer. The keel layer comprises the first keel and the second keel arranged in a staggered manner, so that the sound insulation of the partition wall structure is enhanced, the filling layer can be filled with functional materials such as thermal insulation materials and sound insulation materials, so that the partition wall structure has functions such as thermal insulation and sound insulation, and the setting of the fireproof layer makes the partition wall structure have fireproof and flame retardant functions.

The utility model relates to the technical field of operating rooms, and in particular to a soundproof wall of a modular operating room, which solves the problem in the prior art that when filling the soundproof material, it is not convenient to extrude it thoroughly, which makes the density of the soundproof board insufficient, thereby greatly reducing the sound insulation effect. A soundproof wall of a modular operating room includes a frame, the inner side of the frame is slidably connected to an extrusion plate, and the top of the frame is detachably connected to a top plate, the four corners of the extrusion plate are provided with threaded rods, and the sides of the frame close to the four threaded rods are fixedly connected to side plates, and the threaded rods pass through the side plates through threaded grooves. The method proposed in the utility model, by rotating two threaded rods at the same time, through the rotational cooperation of the threaded rods and the threaded grooves, the extrusion plate extrude the soundproof material, so that the soundproof material is compacted, thereby making the soundproof material more compact, improving the sound insulation effect, and having high practicality.

The present application relates to sound insulation equipment technical field, more specifically, it relates to a kind of full-closed sound barrier based on building energy-saving sound insulation material board, comprising: building energy-saving sound insulation material board, door type steel frame structure and self-starting smoke outlet structure;Building energy-saving sound insulation material board is equipped with multiple, multiple building energy-saving sound insulation material board is respectively installed in the side and top of door type steel frame structure;Self-starting smoke outlet structure is closed and installed in the normally closed smoke outlet of door type steel frame structure;When the fire occurs in the full-closed sound barrier and produces a lot of smoke, self-starting smoke outlet structure removes the plugging of normally closed smoke outlet.The present application uses building energy-saving sound insulation material board and door type steel frame structure to cooperate as enclosure structure, effectively reduce traffic noise;Self-starting smoke outlet structure is also installed, effectively ensure the use safety under emergency state.

The invention discloses a door and window sound insulation curtain and belongs to the field of sound insulation materials. Butyl rubber sound insulation felts are connected to the upper side and the lower side of the sound insulation cotton, and the sides, away from the sound insulation cotton, of the butyl rubber sound insulation felts are connected with oxford cloth. Preferably, the sound insulation cotton, the butyl rubber sound insulation felt and the oxford fabric are sewn in a thread mode. Multiple materials are compounded to synergistically resist sound waves, and the sound insulation effect is better than that of a traditional product; and the material is easy to obtain, the cost is controllable, the volume production is easy, and the anti-layering anti-sticking fabric is suitable for families, offices, hospitals and other places, and the use cost is reduced.

The invention discloses a fabricated building energy-saving sound insulation material wall, and relates to the technical field of fabricated building walls. The wall comprises a wall body, a cavity is formed in the wall body, a damping device is arranged on the back face of the wall body, an assembling device is arranged at the bottom of the wall body, a foaming agent filling device is arranged on the right side of the wall body, and a dehumidification device is arranged on the front face of the wall body. Through the arrangement of the damping device, the side wall stabilizing rod, the sliding block, the stretching plate, the damping sleeve, the fixing block, the connecting rod and the hinged sliding block are matched with the attaching plate, and in the wall carrying process, the side wall stabilizing rod can balance the left stress and the right stress; and the stretching plate is driven by the damping sleeve to balance the stress applied left and right again, and the stress caused by external impact or vibration is dispersed and absorbed, so that the pressure borne by the wall body is reduced, the risk of structural damage is reduced, and the overall durability and safety of the wall body are improved.

A ceiling tile system capable of mitigating radio-frequency and acoustic waves from passing therethrough including a set of conductive grid bars; and a set of ceiling tiles each having a layer of conductive material and a layer of acoustic insulation.