281results about How to "Improve sound insulation and noise reduction" patented technology

The invention discloses an injection-molded type sound-insulating pad heavy TPO (thermoplastic polyolefin) compound capable of meeting the automobile interior emission requirement as well as a preparation method of the compound. The sound-insulating pad TPO compound consists of 0-30wt% of PP (polypropylene), 12-30wt% of a thermoplastic elastomer, 1-5wt% of a polar monomer grafted olefin polymer, 0-1wt% of a special nucleating agent for PP, 1-2wt% of a processing aid and 53-85% of inorganic filler. The preparation method comprises steps as follows: the PP, the thermoplastic elastomer, the polar monomer grafted olefin polymer, the special nucleating agent for the PP and the processing aid are molten, mixed and dispersed in a twin-screw extruder, inorganic powder is added to the twin-screw extruder through a weight-loss type measuring scale in a side feeding manner, extrusion and granulation are performed, and the compound is obtained finally. The material has the characteristics of good sound-insulating and noise-reducing effect and low emission, the performance requirement for sound-insulating pad materials for automobiles is met, and injection molding of the heavy TPO material is realized.

The invention discloses a modified asphalt waterproof coating, a preparation method for the modified asphalt waterproof coating and a use method thereof and relates to the field of building materials. The problems of sound insulation and noise reduction of the waterproof coating film can be solved. The preparation method for the modified asphalt waterproof coating disclosed by the invention comprises the following steps: preparing the modified asphalt waterproof coating from a component A and a component B; mixing and uniformly stirring anion emulsified asphalt, polymer emulsion and slurry, thereby acquiring the component A; and uniformly mixing water with curing agent, thereby acquiring the component B, wherein the slurry is prepared according to the following steps: adding water, stabilizer, dispersing agent, wetting agent, de-foaming agent, fine powder and pH regulator into a dispersing device, dispersing for the first time, adding a silencing filling material soaked with a silane coupling agent solution after ending the dispersing for the first time, and then adding a thickening agent, dispersing for the second time and then ending the dispersing for the second time, thereby acquiring the slurry. The modified asphalt waterproof coating disclosed by the invention has excellent effects of sound insulation and noise reduction on the basis of excellent waterproof property.

The invention relates to a plant noise barrier, which comprises a bracket upright column (4), wherein one or more plant cultivation boxes (2) are fixed on the bracket upright column (4); a plurality of sound insulation fins (3) are arranged outside the plant cultivation boxes (2); and an inclined angle is formed between each sound insulation fin (3) and the horizontal plane. The plant noise barrier has the effects of beautifying roads, preventing visual fatigue and absorbing carbon dioxide and harmful gases, can insulate sound and reduce noise by coacting the sound insulation fins and complexoverlapped plant stems and leaves, greatly reduces automobile and other noise pollution, and has better sound insulation and noise reduction effects than the traditional single noise barrier. Moreover, because each sound insulation fin has a noise reduction structure and is more effective than a wall which insulates sound and reduces noise through plants singly, the defects that the wall hardly has sound insulation and noise reduction effects in the absence of plants are overcome.

The invention relates to a reinforced cement foaming board and a preparation method thereof. The reinforced cement foaming board comprises the following components in percentage by weight: 27.00-35.50% of water, 28.0-61.0% of Portland cement, 0-32.70% of coal ash at grade I or a mixture of coal ash and recycled filler, 0-2.00% of wollastonite powder, 0.10-0.30% of fiber, 0.37-0.65% of ammonium stearate, 1.00-2.00% of a mixture of 10 parts of calcium sulphate and 1 part of calcium formate, 0.10-0.20% of naphthalenesulfonate formaldehyde condensation compound, 0.90-1.20% of hydrogen peroxide and reinforcement net. The reinforced cement foaming board provided by the invention has the advantages of low apparent density, low heat conductivity coefficient, good noise reduction effect, high strength, no crack and shock resistance.

The invention discloses a preparation and a construction process for a bottom-coating used for a mineral cotton ceiling floor. The bottom-coating used for the mineral cotton ceiling floor is a liquid-type layer material. The construction process comprises five procedures of testing substrate plates, spraying and coating the bottom-coating, high-temperature baking, re-spraying bottom-coating and re-baking at high temperature. The bottom-coating used for the mineral cotton ceiling floor has the advantages of strong stereoscopic feeling, strong decoration, excellent fireproof and moisture-proof function, reinforcing the tensile strength of the plate, mildew resistance, reducing noise, long service life, yellowing resistance, low VOC, convenient construction, etc. The bottom-coating used for the mineral cotton ceiling floor is matched with the mineral cotton ceiling floor, has unique stereoscopic feeling, can change the visible effect of the room space and is applicable to the decoration of the ceiling decorative surfaces of various top-grade buildings.

The invention discloses a high-strength composite corrugated fiber foam cement heat insulation material. Aiming at the defects that organic materials such as polyphenyl, extruded sheet and polyurethane, belonging to petroleum extractant, are complicated in structure, easy to age, inflammable, easy to crack, easy to seep and are short in service life, and inorganic materials such as a foam cement heat insulation board cannot reach the use strength of a wall body, the invention designs the high-strength composite corrugated fiber foam cement heat insulation material. The heat insulation material comprises corrugated fiber cement heat insulation material, composite foam cement heat insulation material, a fixed connecting support component, and concave-convex or male-female connecting mortise and tenon joints. The design purposes of meeting the use strength of a building outer wall and reducing the cost are realized by utilizing the performances of low heat conductivity coefficient, non-inflammability, high compression resistance and breaking strength of the foam cement, foamed ceramics and corrugated fiber cement plate and a pouring extrusion and foam technique. The high-strength composite corrugated fiber foam cement heat insulation material has the characteristics that the performances of heat preservation and insulation, non-inflammability and fireproofing, sound insulation and noise reduction, lightweight earthquake and acid rain resistance can be improved, and the material has the advantages on performance that the structure is simple, the material is saved, the mounting and dismounting are convenient, the construction efficiency is high, the service life is long, the cost is low, the material can be used as a finished wall body and recycled, and is energy-saving and environmental-protection.

The invention discloses PVC (polyvinyl chloride) double-side compound sound-proof felt and a preparation method of the felt. The PVC double-side compound sound-proof felt is in an A-B-A layered structure; the A-B-A layered structure comprises a PVC heavy layer, and fiber punched felt compounded on the upper surface and the lower surface of the PVC heavy layer. The novel PVC sound-proof felt adoptsa compound structure; a sound-proof component for an air conditioner compressor can be conveniently arranged and quickly mounted; the sound-proof felt can achieve the best sound-proof, noise reduction, damping and shock absorption effects; in addition, the sound-proof felt further has effects of effectively protecting harnesses and copper pipes against oscillation wear and removing abnormal sloshing sound; and the sound-proof felt is environment-friendly and stable in performance. The preparation method is simple, and adopts hot-melt rolling compounding, and the product is free from lamination and has good practicability.

The invention discloses a rubber aggregate concrete which is prepared by mixing cement, water, fly ash, gravel, sand, rubber aggregate, a polycarboxylic acid high efficiency water reducing agent and an organosiloxane defoaming agent by a common concrete mixing method. The weight ratio of water to cement is 0.40-0.5. The rubber aggregate is modified by anhydrous ethanol. The modification process comprises the following steps: (1) immersing rubber aggregate in anhydrous ethanol for 23-25 hours, and filtering; (2) cleaning the immersed rubber aggregate granule surface with tap water; and (3) drying the cleaned rubber aggregate at 60-70 DEG C. The rubber aggregate concrete overcomes the defect of reduction of the concrete strength and uniformity after the rubber is added in the traditional concrete, ensures the concrete to have the strength and uniformity characteristics of the traditional concrete on the premise of ensuring favorable elastic damping, noise reduction, sound insulation, ductility and toughness of the ensure, and further promotes the recycling of the waste rubber.

The invention provides a safe refuge for families. The safe refuge is arranged in a building and comprises an anti-explosion wall, an anti-explosion door, an anti-explosion ceiling and an anti-explosion bottom plate, wherein the anti-explosion door is arranged on one side of the anti-explosion wall; the anti-explosion ceiling is positioned on the top of the anti-explosion wall; the anti-explosion bottom plate is positioned on the bottom of the anti-explosion wall; and the anti-explosion wall, the anti-explosion door, the anti-explosion ceiling and the anti-explosion bottom plate form closed space. The safe refuge for the families can simultaneously defend or partially defend the following damage events: earthquake disasters, occasional terrorist attacks (light weapon and explosion of a small amount of explosives), violent burglary, 'nuclear radiation weapons' and even nuclear explosion.

The invention provides a sound barrier for highways. The sound barrier comprises a plurality of uprights and sound barrier units disposed between the uprights, the uprights are of an H-shaped structure and the tops of the uprights are in an arc shape. Inserting slots are formed in both sides of the uprights, the sound barrier unit is disposed between the two corresponding uprights, the left end ofthe corresponding sound barrier unit is connected into the right inserting slot of the left upright in a clamped mode and is in flexible connection with nuts through a plurality of bolts; and the right end of the sound barrier unit is connected into the left inserting slot of the right upright and is in flexible connection with nuts through a plurality of bolts. The construction difficulty is reduced, transportation is convenient, during installing, the uprights are firstly installed on a foundation, then a lower composite sound insulation board, a middle layer composite sound insulation board and a top layer composite sound insulation board of the corresponding sound barrier unit are sequentially installed between the two uprights, and the lower composite sound insulation board, the middle layer composite sound insulation board and the top layer composite sound insulation are spliced to each another; and connection is stable by cooperate splicing of grooves and protrusions, and noiseabsorption and sound insulation are combined to realize a good effect of sound reduction and sound insulation.

The indoor decoration health material is used in wall and ceiling in living room, office, bed room, dinning room, stand, reading room and book stack room. The decoration health material for living room and office includes cordate houttuynia, wild chrysanthemum flower and cubeba fruit; that for bed room includes common valeriana, grassleaved sweetflag and cubeba fruit; that for dinning room includes fennel seed, nutagrass flatsedge rhizome, dried orange peel, clove and cubeba fruit; and that for stand, reading room and book stack room includes rue, climbing groundsel and cubeba fruit. The indoor decoration health material of the present invention can ensure indoor air quality and release matter beneficial to human health continuously.

The invention provides an intelligent building with good sound insulation and noise reduction effects, and relates to the technical field of intelligent buildings. The intelligent building with the good sound insulation and noise reduction effects comprises a lift car, wherein sound-absorbing cottons are fixedly arranged on two sides of an inner wall of the lift car; sound insulation devices are fixedly arranged on two sides of the lift car; a door header is fixedly arranged on the top part of the lift car; an installation support is fixedly arranged on the top part of the door header; and a fan is fixedly arranged on the top part of the installation support. According to the intelligent building with the good sound insulation and noise reduction effects, the sound-absorbing cottons are fixedly arranged on the two sides of the inner wall of the lift car and can absorb noise produced during the operation of the lift car, meanwhile, through the cooperation of the sound insulation device,a sound-absorbing box, sound-absorbing covers and a sound insulation plate, the sound-absorbing covers can absorb the noise produced during the operation of the lift car into the sound-absorbing box,and meanwhile, the sound insulation plate can block and absorb for eliminating the noise, so that a box-type lift of the intelligent building has the good sound insulation and noise reduction effects, and is favorable for improving the riding experience of people.

The invention relates to the field of material science, and in particular, relates to a sound insulation and noise reduction composite material and a preparation method thereof. The sound insulation and noise reduction composite material comprises a base plate, a top plate and a sandwich layer located between the base plate and the top plate, wherein the sandwich layer is provided with a negativePoisson's ratio unit; the negative Poisson's ratio unit is mainly formed by alternately stacking and bonding a first negative Poisson's ratio unit and a second negative Poisson's ratio unit made of two different materials and having concave hexagonal structures. The sound insulation composite material has the negative Poisson's ratio unit, the sound insulation and noise reduction performance of the material can be improved, meanwhile, the shear modulus, the fracture resistance, the resilience toughness and the load resistance of the material are improved, and the application range of the material is greatly expanded.

The invention belongs to the technical field of aluminum profiles, and particularly relates to an L-shaped edge sealing aluminum profile. The L-shaped edge sealing aluminum profile comprises a fixed bottom plate and a side baffle. The side baffle is fixed to the side of the fixed bottom plate. The L-shaped edge sealing aluminum profile is characterized in that a damping cavity is formed in the fixed bottom plate, and a sandwich layer is inserted into the damping cavity; the sandwich layer adopts a closed-hole foam aluminum material, one end of the sandwich layer is uniformly provided with a plurality of inserting cavities, and inserting cross beams are arranged in the plurality of inserting cavities; the other end of the sandwich layer is uniformly provided with a plurality of inserting blocks, and the inserting blocks are made of foam aluminum materials; the plurality of inserting blocks are correspondingly inserted into the plurality of inserting cavities, sliding clamping grooves are formed in the two sides of the plurality of inserting blocks, and the sliding clamping grooves are in sliding inserting fit with the inserting cross beams; and a stepped hole is formed in the lateral side of the fixed bottom plate; threaded holes are formed in the plurality of inserting cavities; fixing bolts are connected in the threaded holes in a threaded manner; and the rigidity and firmnessof the splicing positions of spliced edge sealing aluminum profiles are improved, and the overall weight of the edge sealing aluminum profiles is reduced.

The invention relates to a polyurethane sound insulation coating and a production process thereof, belonging to the technical field of preparation of sound insulation materials. The production process comprises the following steps: 1, mixing polyester diol, isocyanate, epoxy resin and dibutyltin dilaurate according to a formula ratio, carrying out heating to 75-90 DEG C, and performing stirring for a reaction for 1-2 hours to obtain a polyurethane prepolymer; and 2, adding N-methyl pyrrolidone into the polyurethane prepolymer, carrying out stirring and reacting for 20-60 minutes, adding triethylamine and water, conducting heating to 70-90 DEG C, performing stirring for 2-3 hours, then adding modified hollow glass beads, aminated tetrapod-like zinc oxide whiskers, a defoaming agent and a coalescing agent, and carrying out stirring and reacting at 70-80 DEG C for 1-2 hours to obtain the polyurethane sound insulation coating. According to the invention, by adding the modified hollow glass beads and the modified tetrapod-like zinc oxide whiskers, the polyurethane coating is endowed with excellent sound insulation and noise reduction performance, and the problems that an existing floor in a building of a community is poor in sound insulation effect and tedious in construction are solved.

The invention discloses a straddle type monorail vehicle body. The straddle type monorail vehicle body comprises a bottom skeleton and apron board structures connected with the bottom skeleton. The apron board structures extend from one end of the vehicle body to the other end of the vehicle body, each apron board structure comprises an upper-layer apron board and a lower-layer apron board, and the tops of the upper-layer apron boards are connected with the skeleton in a rotating mode so that the upper-layer apron boards can be overturned outwards. The apron board structures wrap the two sides of the vehicle body skeleton as a whole, noise of the vehicle body is offset in the apron board structures wrapping the whole skeleton, in this way, a good sound insulation and noise reduction effect is achieved, and the whole vehicle body forms a complete shell; in addition, the upper layer and lower layer separation mode meets the requirements for appearance uniformity and continuity of the apron board structures extending from one end to the other end, guarantees connection with the outer side wall of the vehicle body and lowers manufacturing difficulty. The overall height of the vehicle body can be reduced in maintenance by disassembling the lower layers, so that the workshop requirement and operating difficulty are lowered. The upper-layer apron boards can be overturned, so that maintenance is facilitated for technicians.

The invention discloses a sound insulation composite aluminum plate for a curtain wall and a preparation method thereof. The composite aluminum plate comprises an upper aluminum plate,a core layer, and a lower aluminum plate from top to bottom; the upper aluminum plate and the lower aluminum plate are connected around the core layer in a closed manner; the upper end and the lower end of the core layer are bonded through macromolecule bonding films, a layer of PET composite film is laid on the outer layer of the upper aluminum plate; the PET composite film is further coated with a PVDF fluorocarbon layer, the core layer comprises an upper nonmetal composite layer, a honeycomb layer and a lower nonmetal composite layer from top to bottom, the honeycomb layer is fixedly connected with the upper aluminum plate and the lower aluminum plate, and the aluminum plate has the advantages that the sound insulation effect is excellent, and the service life of the totally-closed aluminum plate is longer.

The invention discloses an environment-friendly rubber sound-insulating building material, which comprises the following raw materials in parts by weight: 50-60 parts of isoprene rubber, 20-30 parts of fluorosilicone rubber, 3-5 parts of heat stabilizer, and 0.5-0.9 parts of crosslinking agent , 5-9 parts of rare earth oxide filler, 4-8 parts of glass microspheres, 3-5 parts of vulcanizing agent PDM, 2-4 parts of silane coupling agent, 6-10 parts of ore powder. The sound-insulating building material of the present invention has excellent sound-insulating performance and good waterproof effect, is more compact in structure than traditional non-woven materials, has superior sound-insulating and noise-reducing effects, has good mechanical properties, and has strong weather resistance; meanwhile, the preparation method of the present invention , the material cost is low, the raw material is easy to obtain, and the process is simple, easy to operate and realize industrial production, and has high practical value and good application prospect.

The invention relates to a reflective heat-insulating energy-saving brick, which comprises a hollow brick body or a hollow block body provided with a plurality of through holes, each of which is a rectangular hole, and the rectangular holes of the hollow brick body or hollow block body are at least A layer of reflective heat insulating material is provided on the inner wall facing the outer wall or on the rib wall separating the through holes. The reflective heat preservation and heat insulation energy-saving brick of the present invention applies heat preservation and heat insulation principles to the interior of hollow bricks or hollow blocks. The reflective heat preservation and heat insulation energy-saving brick has no exposed flammable materials, which not only improves heat preservation and heat insulation Performance, but also improve the fire effect.

The invention discloses a suspended quakeproof sound-proof isolating layer structure which comprises a keel frame, rock wool layers, a bamboo clamping plate, a reinforced concrete layer and a plurality of quakeproof cushion blocks, wherein the quakeproof cushion blocks are uniformly distributed at intervals; the keel frame is fixed at the side parts of the quakeproof cushion blocks in a clamping manner; each rock wool layer is paved between every two adjacent quakeproof cushion blocks and in gaps of the keel frame; the top surfaces of the quakeproof cushion blocks, the top surface of the keel frame and the top surfaces of the rock wool layers are flush, and are combined to form a tiled surface; the bamboo clamping plate is horizontally paved on the surface of the tiled surface; the reinforced concrete layer is fixedly arranged on the top surface of the bamboo clamping plate. The invention further discloses a quakeproof sound-proof floor slab construction method adopting the suspended quakeproof sound-proof isolating layer structure. According to the invention, a damping action on sound waves can be achieved, and good sound-proof and quakeproof effects are achieved.

The invention relates to a transformer iron core and a production method thereof. A polyurethane foam layer formed by curing reaction of polyurethane foaming agents is coated on the outer surface of the iron core; by the polyurethane foam layer, sounds, generated by vibration caused by magnetostriction, of the iron core can be reduced, and sounds generated by transformer coils can be absorbed, so that transformer noise is reduced; the polyurethane foaming agents are coated on the iron core after foaming to form the compact polyurethane foam layer attached on the iron core, and the polyurethane foam layer is not prone to shedding and durable, so that input cost is reduced.