41results about How to "Improve sound absorption and sound insulation" patented technology

A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.

A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.

The invention discloses an ecological sound-absorbing, sound-insulating and high-density fiberboard. The ecological sound-absorbing, sound-insulating and high-density fiberboard is characterized by being prepared from, by weight, 42-45 parts of crop straw, a proper amount of sodium hydroxide with the concentration of 2%, 2-2.5 parts of silane coupling agents kh450, 66-70 parts of ethyl alcohol with the concentration of 95%, 30-32 parts of wood scraps, 7-8 parts of waterborne polyurethane adhesives, 1.5-2 parts of emulsified paraffin, a proper amount of water, 4-6 parts of zeolite molecular sieves, 2.5-3.5 parts of graphene, 5-7 parts of houttuynia cordata, 3-4 parts of complete flax plants and 1-2 parts of epoxidized soybean oil. The surfaces of the crop straw, wood scraps and other components used are properly processed on the basis of a traditional process, and a large number of forest resources can be saved. Meanwhile, the treating agents comprise the zeolite molecular sieves and the like and are matched with natural plant fibers to generate multi-pore components, so that the sound absorbing and insulation effects are enhanced. The product strength is high, quality stability is good, and the use range is wide.

The invention belongs to the technical field of functional composite materials and discloses a three-dimensional crimped sheath-core composite fiber and nanofiber compound sound insulation material and a preparation method thereof. The compound sound insulation material comprises a composite fiber functional layer formed by a three-dimensional crimped sheath-core composite fiber layer and a nanofiber layer and surface protection layers on the upper and lower surfaces. The preparation method comprises the steps of firstly preparing the sheath-core composite fiber layer with a permanent 3D crimping structure; preparing the nanofiber layer by adopting an electrostatic spinning process; compounding the three-dimensional crimped sheath-core composite fiber layer and the nanofiber layer; and then compounding the surface protection layers on the surfaces to obtain the three-dimensional crimped sheath-core composite fiber and nanofiber compound sound insulation material. The obtained compound sound insulation material has excellent sound absorption and sound insulation properties, the absorption coefficient on a 500Hz sound source reaches over 0.3, and the absorption coefficient on a 1,000Hz sound source reaches over 0.6.

The invention discloses an environment-friendly raw bamboo reinforced light bamboo composite material and a processing method of the light bamboo composite material. The bamboo composite material is obtained by mixing a raw bamboo with a wood meal and a reinforced hollow-core particleboard through a polyurethane foamed adhesive. The processing method comprises the steps of removing water from the raw bamboo, drying, prolonging, mixing the adhesive with the wood meal, coating glue, combining, foaming and curing, stacking and trimming. Stand columns are obtained in a way that the bamboo composite materials are compounded by means of transverse cold pressing, then veneered, and finally sawed into required sizes. The light raw bamboo reinforced hollow-core particleboard composite material and the stand columns manufactured by the method are quite high in bending strength, longitudinal compressive strength, utilization rate of bamboo materials, sound-absorbing and sound-insulating performances, and heat preservation and heat insulation, so that the light bamboo composite material can be used as materials of bearing walls or beams and columns of woody buildings.

The invention relates to the industry of thermal insulation building materials, in particular to expanded glazed hollow bead and ceramsite composite thermal insulation sound-insulation lightweight concrete. The concrete is prepared from 3-25 parts of expanded glazed hollow beads, 15-40 parts of cement, 15-56 parts of ceramsite, 0.01-0.1 part of additive, 5-18 parts of fly ash, 0.1-0.5 part of fibers and 20-35 parts of water. Compared with the prior art, the thermal insulation sound-insulation lightweight concrete obtained through the technical scheme has the advantages of being capable of achieving thermal insulation, energy conservation, sound insulation and sound absorbing, high in strength, capable of reducing fire hazards and the like.

Disclosed herein is a technique for further improving the quietness in a vehicle cabin while reducing an increase in the weight of a motor vehicle. A noise reduction member, arranged in a fender inner space defined between a fender panel serving as an exterior panel for a motor vehicle and an inner fender forming a wheelhouse, includes a pair of wall portions which are made of a foamed material and arranged to be spaced apart from each other.

The invention relates to sound-absorbing insulation cotton and a preparation method thereof and a preparation method of a sound-absorbing insulation mat. The sound-absorbing insulation cotton comprises a top layer, a bottom layer and a plurality of middle layers, wherein the top layer, the plurality of middle layers and the bottom layer are sequentially stacked from top to bottom; the top layer and the bottom layer are PP grid cloth; and the plurality of middle layers are prepared by mixing PP fibers and PET fibers. Compared with the prior art, the sound-absorbing insulation cotton has the advantages of being light in mass, high in sound insulation and sound absorption capabilities, high in decorative property and convenient to construct.

The invention discloses light and environment-friendly leveling putty, which is prepared by mixing the following components in part by weight: 20 to 25 parts of cement, 3 to 5 parts of hydrated lime, 10 to 15 parts of light aggregate, 60 to 65 parts of waste stone powder of fineness of 25 to 100 meshes and 1 part of antibacterial and mildewproof composite assistant, wherein the light aggregate is inorganic vitreous hollow microporous material of which the fineness is lower than 100 meshes; and each kilogram of the antibacterial and mildewproof composite assistant is prepared by mixing 0.4 kilogram of antibacterial and mildewproof component, 0.1 kilogram of water-retaining agent, 0.3 kilogram of redispersible polymer powder and 0.2 kilogram of air entraining agent. The waste stone powder made of building waste can be recycled, so the comprehensive utilization of building waste can be promoted and the economic, ecological and social benefit can be improved. The putty is light and improved in cracking resistance; being well compatible with a basic layer, the putty makes the leveling easy and can improve the construction efficiency and construction effect; and the putty is more suitable for molded and mechanical construction and can make the construction process simple and reduce construction price per unit square meter. The light and environment-friendly leveling putty also has the functions of reducing growth of mould and bacteria and is suitable for all indoor decorative surface leveling and polishing projects.

The invention belongs to the technical field of functional materials, and discloses a composite sound insulation material comprising cellulose fibers and nanofibers and a preparation method of the composite sound insulation material. The composite sound insulation material is obtained by compounding a composite fiber layer composed of natural cellulose fibers and nanofibers. The nanofibers are prepared by electrospinning. According to the invention, by combining the nanoscale fibers and the natural cellulose fibers, which are obtained through the electrospinning, the sound insulation performance of the composite material is improved; by use of the natural cellulous fibers and the biodegradable polymer, the environmentally-friendly concept is satisfied; and the composite sound insulation material and the preparation method thereof have bright application prospects.

The invention discloses an environment-friendly sound-insulating interior building material. The environment-friendly sound-insulating interior building material comprises the following raw materials in parts by weight: 5-7 parts of polyvinyl acetate, 6-10 parts of polyvinyl alcohol, 4-8 parts of silica sol, 7-9 parts of a water-soluble polyurethane solution, 4-6 parts of nanometer carbon black, 15-17 parts of sound-insulating fiber, 10-16 parts of broken glass powder, 8-14 parts of glass microbeads, 5-9 parts of enhanced oxide, 7-9 parts of calcium carbonate powder, 8-12 parts of a compound flame-retardant additive, 25-35 parts of a mineral filler and 2-6 parts of a sterilizing additive. The environment-friendly sound-insulating interior building material has relatively good worm-proof, sterilizing, sound-absorbing and sound-insulating performance, and has relatively strong advantages in aspects of the uniformity, the breathability, the tensile strength, the elastic recovery rate and the heat-insulating function; meanwhile, the environment-friendly sound-insulating interior building material uses safe and reliable components as raw materials, is free of environment pollution, relatively low in cost and concise in process, and has a relatively high practical value and a good application prospect.

The embodiment of the invention discloses a diatomite ecological board and a preparation method thereof. The diatomite ecological board comprises the following raw materials in parts by weight: 20 to60 parts of polyvinyl chloride resin; 9 to 55 parts of calcite powder; 3-30 parts of diatomite, 5 to 37 parts of a granulation material; 5 to 10 parts of zeolite powder; 3 to 10 parts of shell powder;3 to 10 parts of acicular wollastonite powder; 3 to 10 parts of antimonous oxide; 1 to 5 parts of nano titanium dioxide, 3 to 10 parts of tourmaline powder, 1.5 to 6 parts of a foaming regulator, 0.04 to 1.5 parts of an ammonia-free white foaming agent, 0.07 to 0.6 part of oxidized polyethylene wax, 0.03 to 0.3 part of polyethylene wax, 0.1 to 2.5 parts of a calcium-zinc stabilizer and 0.07 to 1.5 parts of 60 lubricant. Meanwhile, the diatomite ecological board has the characteristics of formaldehyde purification performance, negative oxygen ion release performance, mold prevention performance, B1-grade flame retardance, contains no lead, chromium, cadmium or mercury heavy metals, and has electrostatic resistance.

The invention discloses an organosilane crosslinked polyethylene power cable material with sound absorption and sound insulation functions. The material is characterized by being made of the following raw materials by weight: 60 to 70 parts of high-density polyethylene, 30 to 40 parts of medium-density polyethylene, 14 to 17 parts of nylon 6, 11 to 14 parts of acrylic fibers, 10 to 15 parts of vermiculite, 30 to 40 parts of polyurethane emulsion, 14 to 20 parts of vinyltriethoxvsilane, 13 to 18 parts of StronWi powder, 1.4 to 2.8 parts of antimonous oxide, 2 to 4 parts of sodium antimonate, 0.1 to 0.3 part of an antioxidant 1010, 0.2 to 0.4 part of vinyl benzene, 0.3 to 0.5 part of dibutyltin dilaurate, 2.1 to 3.5 parts of dioctyl phthalate, 3 to 5 parts of isopropyl palmitate and a proper amount of water. According to the invention, the addition of modified acrylic fibers improves tear resistance of the power cable material; the addition of vermiculite with pores of different sizes as a filler can improve sound absorption and sound insulation properties of the power cable material; meanwhile, the organosilane crosslinked polyethylene power cable material provided by the invention is low in smoke and free of halogen, does not release poisonous and harmful gas, is safe and environment friendly, has excellent properties like thermal aging resistance, oil resistance and wear resistance and has broad application prospects.

The woody material surface processing method is to scraping of the loose and soft layer or, preferably, to brush the surface layer with wire brush to form uneven pattern reflecting the timber grain pattern including concave parts in the hard texture parts and convex parts in the loose texture parts. Thus processed timber has stereo feeling and relief pattern effect, excellent antiskid performance, high paint adhering performance and raised sound absorbing and isolating function.

The invention relates to a non-woven fabric material, in particular to an anti-static inflaming retarding non-woven fabric material for sound absorbing cotton. The non-woven fabric material is composed of, by weight, 100 parts of isotatic polypropylene, 12-15 parts of return polypropylene, 1-2 parts of cerium oxide, 2-3 parts of sodium silicate, 12-15 parts of chlorcosane, 2-3 parts of silicon dioxide, 10-12 parts of peach pits, 6-9 parts of activated carbon, 2-3 parts of scutellariabaicalensis, 1-2 parts of liquorice, 1-2 parts of orange peels, 2-3 parts of eclipta and 4-5 parts of additives. The non-woven fabric material comprises the chlorcosane, the silicon dioxide, the activated carbon, Chinese herbal medicine plant fibers and other raw materials, the non-woven fabric material has the good properties of sound absorption, noise reduction, static electricity resistance and inflaming retarding, in addition, the return polypropylene is reused, production cost is lowered, and resource waste is avoided. After a plurality of layers of non-woven fabric materials are stacked, the sound absorbing cotton can be made, the process is simple, and the application prospect is wide.

The invention provides an automobile front wall inner sound insulation pad and a preparation method and application thereof. The automobile front wall inner sound insulation pad comprises a sound insulation cotton layer, a heavy coating, a pedal cushion block and a PU foaming layer which are sequentially arranged in a stacked mode, and the preparation method comprises the following steps of dryingand pressing to form the sound insulation cotton layer for use; drying, adsorbing and forming the heavy coating, adhering the heavy coating to the pedal cushion block, then foaming, adhering the heavy coating to the pressed and formed sound insulation cotton layer, and finally cutting to obtain the automobile front wall inner sound insulation pad. The sound insulation cotton layer, the heavy coating, the pedal cushion block and the PU foaming layer are structurally adopted to solve the problem of single structure, the overall sound absorption and insulation performance is improved, meanwhile,the pedal cushion block is pre-buried during foaming, the sound insulation performance is further improved while supporting is achieved, and wide application prospects are achieved.

The invention discloses an environment-friendly light building sound insulating material which is prepared from the following raw materials in parts by weight: 10-20 parts of coal ash, 5-12 parts of coal gangue powder, 5-10 parts of asbestos wool, 7-15 parts of hollow ceramic microspheres, 5-7 parts of a thermoplastic phenol resin, 2-6 parts of an ethylene-propylene-diene monomer, 5-9 parts of a PVC resin, 5-11 parts of polyethylene, 1-4 parts of a plasticizer, 1-3 parts of an adhesive, 2-5 parts of a waterproof agent, 6-10 parts of nano carbon black, 9-11 parts of a polystyrene foam plastic and 0.3-0.6 part of a foaming agent. The hollow ceramic microspheres of the material have reflection and scattering functions on sound waves, so that noise can be effectively reduced; in addition, dueto addition of the asbestos wool, the thermoplastic phenol resin, the ethylene-propylene-diene monomer, the PVC resin, the polyethylene and the polystyrene foam plastic, the sound wave reflection andscattering properties can be further improved, so that the building sound insulating material is light in weight, convenient to mount, good in environment protection effect, applicable to buildings and the like, long lasting in noise reduction effect and free of indoor environment pollution.

The present invention discloses an environmental protection flame-retardant decoration sound-absorbing material, which comprises the following raw materials by weight: 30-40 parts of an adhesive, 15-25 parts of sound absorbing fiber, 10-20 parts of broken glass powder, 8-14 parts of fly ash, 5-10 parts of a metal oxide, 7-9 parts of modified calcium carbonate powder, 8-12 parts of a flame retardant additive, 25-35 parts of mineral filler, and 2-6 parts of a bactericidal additive. The environmental protection flame-retardant decoration sound-absorbing material of the invention has functions of good sound absorption, good sound insulation, excellent uniformity, excellent gas permeability, excellent tensile strength, excellent resilience rate, excellent thermal insulation and excellent sterilization function, is the widely promoted decoration sound-absorbing material, can be used as the sound-absorbing barrier in high-speed highway, railway, airport, rooms and urban overhead roads, can further be used as public building sound-absorbing decoration materials, and further has advantages of safe and reliable raw material components, no environment pollution, low cost, simple process, high practical value and good application prospects.

The invention relates to sound absorption cotton, in particular to a piece of inexpensive nonwoven fabric sound absorption cotton containing rice hulls. The inexpensive nonwoven fabric sound absorption cotton containing the rice hulls is composed of a top surface layer, a back surface layer and a fiber cotton layer clamped between the top surface layer and the back surface layer, wherein the top surface layer and the back surface layer are made of nonwoven fabric material, and the nonwoven fabric material is prepared by performing a melt blowing method on raw materials of, based on the following weight part ratio, 100 parts of isotatic polypropylene, 1-2 parts of zinc chloride, 2-3 parts of silica sol, 1-2 parts of white emulsion, 10-12 parts of dioctyl phthalate, 3-4 parts of chlorinated polyethylene, 1-2 parts of sodium abietate, 10-12 parts of the rice hulls, 2-3 parts of creeping oxalis, 1-2 parts of dayflower, 2-3 parts of garden balsam stems, 1-2 parts of red peony roots and 4-5 parts of accessory ingredients. The inexpensive nonwoven fabric sound absorption cotton uses the nonwoven fabric as outer layer material, has the advantages of protecting environment and being safe, preventing dust and water, resisting heat and retarding flame, absorbing sound and reducing noise and the like, is suitable for sound insulation in various environmental conditions, and low in production cost, and has popularization and application value.

The invention provides a production line for sound absorption door sheets. The production line for sound absorption door sheets comprises squeezing feeding devices, a conveying device, an upper-plate butt joint device and a door sheet pressing device. Each squeezing feeding device comprises a tank body internally provided with a heating pipe, wherein an outlet of the tank body is connected with a feed inlet of a spiral conveyor. The number of the squeezing feeding devices is at least two, and the squeezing feeding devices are arranged side by side. The conveying device is arranged below the squeezing feeding devices. The upper-plate butt joint device comprises rails fixed to a crossbeam, sliding blocks moving along the rails and electric hoists connected to the sliding blocks, and a row of conveying rollers is arranged below the electric hoists. The door sheet pressing device comprises hydraulic cylinders fixed to the crossbeam, piston rods of the hydraulic cylinders are connected with a pressurization plate, and an operation platform is arranged below the pressurization plate. By means of the production line for sound absorption door sheets, sound insulation materials stuffed in door bodies can form gradients, the sound insulation and absorption effects are enhanced, stress uniformity of door sheets is guaranteed, and the strength of door bodies is improved.

The invention discloses three-component sound-absorbing cotton and a preparation method thereof, and belongs to the technical field of sound-absorbing materials. The three-component sound-absorbing cotton comprises three components, wherein an upper surface layer (1), a first adhesive layer (2) a middle layer (3), a second adhesive layer (4) and a lower surface layer (5) are sequentially arrangedin a stacked mode from top to bottom. The middle layer (3) is made of polyurethane porous foam materials, the upper surface layer (1) and the lower surface layer (5) are both made of mixed fibers of polyethylene glycol terephthalate fibers and polypropylene fibers, and the first adhesive layer (2) and the second adhesive layer (4) are both made of adhesives. The invention further discloses the preparation method of the three-component sound-absorbing cotton. The three-component sound-absorbing cotton is of a three-layer structure, has excellent sound-absorbing and sound-insulating effects, andis small in overall surface density.

Disclosed herein is a technique for further improving the quietness in a vehicle cabin while reducing an increase in the weight of a motor vehicle. A noise reduction member, arranged in a fender inner space defined between a fender panel serving as an exterior panel for a motor vehicle and an inner fender forming a wheelhouse, includes a pair of wall portions which are made of a foamed material and arranged to be spaced apart from each other.

The invention provides an environment-friendly printing process without noise pollution, and relates to the technical field of printing. The steps are as follows: preparation of a sound absorbing panel, preparation of an adhesive, preparation of a sound absorbing cover, and printing. The invention overcomes the deficiencies of the prior art, and the noise generated by the printing is reflected andweakened by a large number of different sound absorbing chambers by the sound absorbing cover, effectively reducing noise pollution, and lubricating a printing roller shaft by lubricating oil, thereby reducing the noise generation from the root, and preventing the staff from working under the noise for a long time and thus damaging the hearing, green and environmental protection is realized, andthe printing effect is good.

The invention discloses a one-way sound-absorbing wall filling material, which belongs to the field of noise reduction and environmental protection. The one-way sound-absorbing wall filling material can be arranged by a plurality of conch-shaped two-way sound tubes, and the sound can be reduced from the inside to the outside. It is conducted from the thick end to the thin end, and the inner diameter of the thin end is larger, which can play a better sound amplification effect. At the same time, from the outside to the inside, the sound is conducted from the thin end to the thick end, so that the sound passes through many times. The inner wall of the thin end and the thick end is reflected to achieve an effective noise reduction effect. At the same time, with the function of the semi-sound insulation board, it can achieve the effect of different sound insulation between indoor and outdoor, thereby effectively improving the application range of this sound insulation material, so that people in the room can be protected from the outside world. At the same time as the noise is disturbed, people outside can detect the movement in the room in time, thereby improving the rest quality of people indoors, and at the same time reducing certain safety hazards.

The invention relates to a bismaleimide modified calcium carbonate filler with the functions of sound absorption and sound isolation. The filler is prepared from the following raw materials in parts by weight: 200 parts of calcium carbonate powder, 4 to 5 parts of acrylic ester rubber powder, 1 to 2 parts of quartz powder, 1 to 2 parts of spraying carbon black, 80 to 100 parts of hydrogen peroxide, 8 to 10 parts of peroxidase, 6 to 8 parts of polyethylene glycol octylphenol ether, 200 to 250 parts of dimethylformamide, 1 to 2 parts of 5-hydroxylevulinic acid, 2 to 3 parts of 4,4-diphenylmethane bimaleimide, 2 to 3 parts of ethyl malonate, 0.5 to 1 part of catalysts, 1 to 2 parts of hexadecyl trimethyl ammonium bromide, 1 to 2 parts of titanium dioxide, 2 to 3 parts of dimethyl octyltin mercaptide, 2 to 3 parts of sodium lignin sulfonate, 2 to 3 parts of hydroxyl silicone oil and a proper amount of acetone and de-ionized water. The filler has the advantages that the added acrylic ester rubber powder, the quartz powder and the spraying carbon black are used in a matched way, so that the functions of damping vibration attenuation, sound absorption and sound isolation of calcium carbonate are greatly enhanced.

The invention relates to improved two-component sound-absorbing cotton. The improved two-component sound-absorbing cotton sequentially comprises a sound-absorbing layer I, a sound-isolating layer I, asound-absorbing layer II and a sound-isolating layer ii, wherein the adjacent layers are connected by adhesive layers; the sound-absorbing layer I and the sound-absorbing layer II are both mixed layers prepared by melting ultrafine polypropylene fiber and staple PET fiber, wherein weight ratio of the ultrafine polypropylene fiber to the staple PET fiber is 3 to 8; thickness ratio of the sound-absorbing layer I to the sound-isolating layer I to the sound-absorbing layer II to the sound-isolating layer II is (2-3) to 0.4 to 1 to 0.3; and U-shaped sound-absorbing holes are arranged inside the sound-absorbing layer I while 7-shaped sound-absorbing holes are arranged inside the sound-absorbing layer II. The improved two-component sound-absorbing cotton is light in mass, good in sound-isolatingand sound-absorbing effects, environmentally friendly and excellent in pulling performance.

The invention provides a heat-storage, energy-saving and sound-insulation building material, and relates to the technical field of building materials. The heat-storage, energy-saving and sound-insulation building material comprises the following components in parts by weight: 25-30 parts of phase change cement, 20-25 parts of ceramic powder, 5-12 parts of expanded perlite, 3-5 parts of volcanic ash, 1-2 parts of slaked lime, 5-8 parts of recycled asphalt, 15-20 parts of rock wool, 5-10 parts of alkaline leaching bagasse pulp fibers, 3-5 parts of an inorganic phase change heat storage material, 1-2 parts of multi-walled carbon nanotubes, 5-10 parts of building wastes, 5-10 parts of old textile fibers, 3-5 parts of bamboo fibers, 3-5 parts of paraffin and 10-15 parts of polyurethane resin. Various waste resources are used and more environmentally friendly, the finished product can achieve organic and inorganic phase change heat storage, heat can be dissipated in a one-way mode in cooperation with the heat insulation performance of rock wool, the heat storage and heat release efficiency is improved, a hole structure is arranged in the finished product, the sound absorption and insulation capacity can be improved, and the whole product further has excellent strength, toughness, water resistance and flame retardant performance.