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.

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 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 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 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.

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 a composite wall body of a building external wall and a construction method of the composite wall body. The composite wall body comprises an external hanging plate used as theouter lateral face of the wall body and an inner lateral plate used as the inner lateral face of the wall body. The external hanging plate is fixed to a keel through hanging connecting components. The inner lateral plate is fixed to a stand column. A heat preservation layer is arranged between the external hanging plate and the inner lateral plate in a filling mode. The keel and the stand columnare arranged in the heat preservation layer. The distance between the external hanging plate and the keel can be adjusted. The composite wall body has the effect of facilitating construction.

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 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 a preparation method of a foamed aluminum sound-absorbing and sound-insulating composite material. The method comprises the following steps: cutting pure aluminum ingots into aluminum blocks, putting them into crucibles, raising the temperature to 700°C-740°C and melting them to obtain aluminum melts; agent, then add basalt chopped fibers with 3-5% of the mass of the aluminum melt, stir evenly, then add the foaming agent titanium hydride, keep warm for 1-2 minutes after stirring; cool until the foamed aluminum is solidified and formed, and finally get the foamed aluminum sound-absorbing and sound-insulating composite material. The invention only needs to foam the industrial pure aluminum melt once through the melt foaming method to obtain fiber closures with good sound absorption and sound insulation performance, wide size range, high strength, low density, good flame retardancy and high weather resistance. Cellular aluminum foam composite.