4917 results about "Acoustic insulation" patented technology

A fibreboard, insulating, wall panel includes an integral air and vapor barrier of metal foil or metallized plastic film adhered to one surface of the panel. Panels are attached to a stud wall frame. Abutting panel joints are taped to provide a continuance vapor barrier. Increased thermal and acoustic insulation as well as structural integrity of the barrier is provided by the panel.

An insulation blanket is disclosed that contains fire-blocking materials for preventing rapid penetration of fire into an aircraft fuselage in case of a fire outside the aircraft. The insulation blanket contains at least one layer of fiberglass or other thermal-acoustic insulation material without fire-blocking properties, and one or more layers of fire-blocking material. The fire blocking material is wider than the thermal-acoustic insulation so that it may be folded against and attached to adjacent structural frame members of the fuselage. In the alternative, a thermal-acoustic insulation material is used that has fire-blocking properties instead of the separate layers of fire-blocking and thermal-acoustic insulation materials. A method for installing insulation blankets according to the present invention is disclosed, whereby a fire-blocking insulation portion of the blanket is folded against and attached to frame members of the aircraft using attachment posts or spring clips.

An improved acoustically and thermally insulating fire-retardant composite material suitable for use in structures such as buildings, appliances, and the interior passenger compartments and exterior components of automotive vehicles is provided. The material is comprised of at least one airlaid fibrous layer of controlled density and composition and incorporating suitable binding agents and additives as needed to meet expectations for noise abatement, fire-retardancy, and mildew resistance. Separately, an airlaid structure which provides a reduced, controlled airflow therethrough useful for acoustic insulation is provided, and which includes a woven or nonwoven scrim. A process for the production of the fire retardant nonwoven material is also provided.

A fire resistant and sound-attenuating lighting assembly adapted to be recessed or mounted behind a ceiling or other surface comprising a light fixture mounted on a plaster frame and adapted to emit light through an opening in the plaster frame and an insulating blanket deployed around the light fixture except for an opening in the light fixture through which light is emitted. In one embodiment, a shell attached to the plaster frame substantially surrounds the insulating blanket. Among other things, the fire-resistant lighting assembly is capable of sustaining fire barrier standards for a ceiling or other surface and maintains the acoustic insulation of the ceiling or other surface thereby reducing noise transmission.

This invention overcomes the disadvantages of the prior art by providing a power generating system particularly suitable for field use in remote locations, which is fuel-efficient, relatively quiet, tolerant of dust, capable of operating on low grade logistics and diesel-like fuels and capable of generating between 500 W and 2 KW of continuous electrical power. This generator employs a miniature internal combustion engine/generator (MICE) having a piston moving within a cylinder arranged for two-cycle operation, and an interconnected, axially arranged piston shaft that oscillates an alternator coil within a magnetic core. The piston shaft is opposed by a strong, multiple-helix spring. The cylinder head, in which the piston operates, is cooled by moving (electrically pumped) fluid in a cooling head, or by another heat-transfer mechanism. The MICE generator's intake arrangement includes a preheater heated by a heated fluid flow thereon. The MICE generator is vibration-isolated using a base that supports the MICE on a plurality of soft coil springs. The MICE generator is encased in an acoustic enclosure having a shell composed of sheet metal or another stiff material extending from the base plate and being covered by a top side. Holes in the enclosure top are covered by porous discs that allow exhaust gasses from the internal muffler to pass therethrough. The acoustic enclosure resides in a large, typically portable, external package enclosure.

A laminated glazing material with properties of acoustic insulation and mechanical strength. The laminated glazing material including two glass sheets and a single-ply intermediate layer of a thickness having the form of a polymer film. The thickness of the intermediate layer being defined as a function of a variable which is specific to the material, and which defines the critical energy value of the intermediate layer and is representative of the energy necessary for propagation of a crack initiated in the intermediate layer.

The object of the invention is to provide sound insulating members exhibiting both high vibration damping performance and high sound insulation performance, a vibration damping material for affording such members and a resin composition for forming the vibration damping material. The invention provides a first resin composition for vibration damping materials which contains 100 parts by weight of a chlorine-containing thermoplastic resin, and 20 to 200 parts by weight of a chlorinated paraffin having 12 to 16 carbon atoms on average. The thermoplastic resin contains preferably 20 to 70 wt. %, more preferably 30 to 70 wt. %, of chlorine. The chlorinated paraffin is preferably 30 to 70 wt. %, more preferably 35 to 65 wt. %, in chlorination degree.

The invention provides a sandwich structure, comprising a first interlayer, a second interlayer and a core located between the first interlayer and the second interlayer. The core is in a multilevel honeycomb structure. In the multilevel honeycomb structure, intersections of every two or three sides of a current-level honeycomb structure having cell-element side length L<0> are replaced with polygons with side length L<1> to form a next-level honeycomb structure, wherein L<1> is less than L<0>. The sandwich structure is light in weight, high in specific strength, high in energy absorption efficiency, good in thermal insulation and acoustic insulation, and high in multifunctional comprehensive performance; compared with the traditional honeycomb structures in in-plane (X-Y) and out-plane (Z) directions, the sandwich structure is evidently higher in various performances such as mechanical properties, mechanical strength, energy absorption efficiency and impact resistance; the higher the honeycomb level, the better the performances; thus, the honeycomb structure is of greater advantages in the engineering field than the traditional honeycomb structures.

The invention provides a vacuum heat-insulating board which comprises an upper heat-insulating board and a lower heat-insulating board, wherein the peripheries of the upper heat-insulating board and the lower heat-insulating board are welded together through using a welding flux, a closed vacuum layer is formed between the upper heat-insulating board and the lower heat-insulating board, the upper heat-insulating board and the lower heat-insulating board are flattened heat-insulating boards or convex-sided heat-insulating boards, and the convex side of each convex-sided heat-insulating board faces outwards. The production method of the vacuum heat-insulating board provided by the invention is simple in process, and the prepared vacuum heat-insulating board overcomes the defects of the existing heat-insulating board, so that the tightness of a vacuum layer of the vacuum heat-insulating board can be effectively guaranteed, the service life of the vacuum heat-insulating board is prolonged, and the strength and heat insulation, sound insulation and fire prevention properties of the vacuum heat-insulating board can be increased.

The invention discloses low-density composite foaming cement and a preparation method thereof, relating to a light building material. The foaming cement is prepared by adopting a normal-temperature foaming technology, and comprises the following components in parts by weight: 100 parts of cement, 10-50 parts of active admixture, 1-5 parts of redispersible emulsion powder, 1-4 parts of water repellent, 0.5-1.5 parts of cellulose ether, 0.3-0.7 parts of reinforced fiber, 0.2-0.5 parts of foam stabilizer, 3-8 parts of foaming agent and 50-80 parts of water. The method comprises the following preparation steps of: proportionally mixing and stirring the cement, active admixture, redispersible emulsion powder, water repellent, cellulose ether, reinforced fiber, foam stabilizer, and water into cement slurry; adding the foaming agent; and stirring, molding by casting and naturally curing. The foaming cement disclosed by the invention has the advantages of low volume weight, small heat conducting coefficient, small shrinkage ratio, high intensity, integration of heat preservation, sound insulation, fire prevention and low carbon, simple and convenient production preparation process and easiness in controlling.

An absorption muffler includes a metallic exhaust pipe including a plurality of perforations, a polymeric housing carried by the exhaust pipe and enclosing the plurality of perforations, and including axially opposed ends. Thermal insulation is carried radially between the exhaust pipe and the polymeric housing and axially between the axially opposed ends inclusive thereof. Acoustic insulation is carried between the thermal insulation and the polymeric housing.

The invention discloses a formula of a ceramic aggregate aerated concrete brick and a method for making the concrete brick. The compositions in portion by weight of the concrete brick are: 12 to 26 portions of cement, 26 to 46 portions of fly ash, 16 to 28 portions of ceramic aggregate, 2 to 6 portions of slag, 2 to 6 portions of cinder, 16 to 26 portions of water and 2 portions of addition agent, wherein the concrete matters in percentage by weight of the addition agent are: 10 to 18 percent of aluminum powder (a foaming agent), 20 to 45 percent of polycarboxylate (a water reducing agent), 15 to 35 percent of 1122 fly ash excitant and 20 to 50 percent of coagulant hardening accelerator in which calcium chloride and sodium sulfate compounds respectively occupies 50 percent. The concrete steps for making the ceramic aggregate aerated concrete brick are as follows: raw materials are weighed; the weighed raw materials are placed in a stirring machine to carry out stirring and mixing in advance; an addition agent is added in the stirring machine to carry out full stirring; a brick die is prepared, and stirred raw materials are cast in the brick die; initial set and forming are carried out; stripping is carried out; a water-proofing agent is sprinkled on a stripped brick; and natural curing is carried out. Moreover, the obtained brick has light dead weight, low density, high strength, low water absorption rate and excellent sound insulation performance and heat-shielding performance.

The invention discloses a construction method for an interior partition wall. The construction of the partition wall is characterized by comprising the following steps: erecting templates at both sides of a wall body, and fixing the templates by using outside removable keels; and then casting light aggregate concrete or manufactured-in-place aerated concrete in the templates so as to cast the wall body into an complete whole, wherein the permanent templates can be made of thistle boards, plastic boards, cement boards or insulation boards; the casting of the light aggregate concrete is transferred by a booster pump; and the casting of the concrete can be started from the lower part, middle part or the upper part of the wall body until the concrete is spread all over the whole wall body. The wall body constructed by using the method meets the requirements of light weight, sound insulation and heat insulation for the traditional partition wall, and simultaneously, the common quality problems of plastering, wall surface cracking and poor earthquake resistance in the construction of the traditional partition wall are avoided or reduced because of the one-piece casting. Meanwhile, by erecting the permanent templates in the construction of the wall body, the molded wall surface is smooth and level, and the floated coat construction is omitted, thereby greatly raising the construction speed of the wall body, and lowering the construction cost.

The invention discloses light thermal insulation soundproof damping floor mortar, which is prepared by mixing the following components in percentage by mass: 30 to 40 percent of cement, 0 to 28 percent of coarse elastic rubber aggregate, 5 to 50 percent of fine elastic rubber aggregate, 5 to 15 percent of inorganic vitrified microsphere aggregate, 0.5 to 3 percent of redispersible emulsion powder, 0.05 to 0.15 percent of cellulose ether, 0.02 to 0.06 percent of 6mm fiber and 0.05 to 0.1 percent of hectorite aid. Inorganic silicate is taken as a binding material, so the light thermal insulation soundproof damping floor mortar has good compatibility with cement mortar and a concrete base, is firmly bound, avoids a hollowing phenomenon, is suitable for various base conditions, has a leveling function under the condition of poor evenness, is easy and convenient to construct, and can be scraped after being added with water and uniformly stirred; the whole soundproof layer is a whole, sound bridges are greatly reduced, the compression strength is moderate, the deformation hardly occurs, and the load of a building cannot be increased greatly; and the light thermal insulation soundproof damping floor mortar has low coefficient of heat conductivity, makes floors soundproof, and has the thermal insulation effect.

The invention discloses a flexible thermal-insulating decorative material for an internal wall and a producing method for the flexible thermal-insulating decorative material. The flexible thermal-insulating decorative material is composed of a flexible inner decorative layer, an adhesive layer and a flexible foamed heat-insulating layer. The invention also provides a method for producing the flexible thermal-insulating decorative material. The flexible thermal-insulating decorative material for the internal wall has the advantages of low energy consumption, good benefit, simple construction and large market, and integrates thermal insulation, damp prevention, mold prevention, sound insulation and decoration; the combination of a flexible foamed heat-insulating material and a flexible decorative material for the internal wall to form the unique decorative material for the internal wall is a great breakthrough for emission reduction and energy conservation of a wall body; and the flexible thermal-insulating decorative material for the internal wall is particularly applicable to energy-saving reconstruction of old buildings.

A sound-proof wall made of FRP in the form of a sound-proof wall panel that comprises a core and skin members made of FRP positioned on both sides of the core and whose weight per nit area is within the range of 10-60 kg/m<2>; and a method of producing the same. This sound-proof wall, though light in weight, has a superior sound insulation property and will never corrode because it is made of FRP. Further, it has a high degree of freedom of engineering design including sound-proof property, design, and shape, capable of producing a desired sound-proof wall with case. Further, since it has a high specific strength, it is possible to attain a drastic weight reduction while retaining the necessary strength, and facilitate working, shorten construction time, and reduce construction cost.

The invention discloses a baking-free and steaming-free brick, a baking-free and steaming-free building block and a preparation method thereof. The brick and the building block comprise the following components in percentage by weight: 5 to 40 percent of calcined magnesia, 1 to 25 percent of industrial waste slag, 4 to 35 percent of conditioner solution, 0 to 30 percent of reinforcing and thickening agent, 5 to 85 percent of aggregate, 0.01 to 8 percent of waterproof admixture and 0 to 0.5 percent of water reducing agent. The brick and the building block have the advantages of normal-temperature curing reaction, quick condensation and hardening, high strength, heat insulation, sound insulation, flame resistance and freezing resistance; the water resistance is improved, the service life of the product is prolonged, and meanwhile, the defects of moisture absorption, halogenation and scumming of the product are overcome; recycle and comprehensive utilization of solid wastes are promoted, and environmental pollution can be reduced; and the volume weight of the product can be lightened, the transportation energy consumption can be reduced, the thermal resistance can be improved, and the heat insulation performance can be improved. The brick and the building block have no toxicity, no smell, no radioactivity, no harm to human body and no environmental pollution, and have the characteristics of cleanliness and environmental friendliness; and clay is not adopted so that the tilled land resources can be effectively protected.

The invention relates to an unburned and non-autoclaved caustic calcined dolomite brick and building block, which comprises the following components in part by weight: 5 to 40 parts of caustic calcined dolomite powder, 4 to 35 parts of conditioner solution, 5 to 85 parts of aggregate, 0.01 to 8 parts of water-resistant admixture, 1 to 50 parts of industrial residues, 1 to 30 parts of reinforcing and thickening agent and 0.01 to 0.5 part of water reducing agent. The unburned and non-autoclaved caustic calcined dolomite brick and building block has the advantages of greatly utilizing the industrial residues and agricultural wastes, saving resources and energy and not producing emissions of waste gas, wastewater and the industrial residues, along with freeness of burning, vapor-free or autoclaving-free maintenance, high normal temperature reaction and curing speed, strong strength, high water resistance, no absorption of moisture and separation of halide, no scumming, resistance to frost, acoustic insulation, thermal insulation, heat preservation, fire retardance and the like.