8153results about How to "Improve sound insulation" patented technology

The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

The invention discloses composite ecological cement produced by using reproducible biomass combustion wastes, industrial residues and the like as main raw materials (the utilization ratio of the biomass combustion wastes and the industrial residues is over 80 percent). The novel gelling material namely the composite ecological cement is combined with other environment-friendly materials such as a paper honeycomb panel and the like to compound and manufacture a novel environment-friendly building product, such as a novel super-lightweight high-strength inner wall composite partition plate (having a dead weight of about 19 kilograms per square meter) special for novel high-rise and multi-layer frame constructions, a 65 percent self-heat preservation lightweight high-strength outer wall partition plate, an outer wall heat preservation and decoration integrative plate, a novel composite wood building block, a novel composite baking-free brick, novel bubble concrete and the like; and all the products are detected by a national level building material detection institution, reach a related product quality standard, are manufactured in factory by using specified machinery, are mounted and manufactured on site and are efficient and economical. The composite ecological cement uses various reproducible resources and various reclaimable wastes to the utmost extent, protects the environment, saves energy, reduces discharge and the overall comprehensive engineering manufacturing cost, and has important economic and social benefits.

The invention comprises connector for a pair of opposed spaced concrete forming panels. The connector comprises an elongate spacer member having flanges formed thereon intermediate a central portion thereof and each opposite end thereof. A portion of at least one end of the spacer member is sized and shaped to selectively engage an elongate panel bracing member. A composite insulated concrete form and a method of using the insulated concrete form are also disclosed.

A blender has novel sound-dampening enclosure system that is selectively and conveniently attached to and detached from a blender, or retro-fitted to a blender, utilizing a bottom wall portion for engaging a blender jar base in a fixed manner. Another aspect of the blender includes a simplified control logic using a minimal number of input buttons and using user-prompts.

A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.

The fuel injection device provides a particularly effective sound-decoupling construction. The fuel injection device has at least one fuel injection valve, a receptacle bore for the fuel injection valve in a cylinder head, and a fuel distributor line having a fitting in which the fuel injection valve is placed in partially overlapping fashion. A connecting element is situated in the receptacle bore such that the fuel injection valve is held in the connecting element such that the fuel injection valve and the connecting element are held so that they do not contact any surfaces or walls of the receptacle bore of the cylinder head that do not run axially parallel to the fuel injection valve. For this purpose, the connecting element is attached immediately on the fitting of the fuel distributor line.

The fuel injection valve is particularly well-suited for use in fuel injection systems of mixture-compressing externally ignited internal combustion engines.

It is an object of the present invention to provide an interlayer film for a laminated glass excellent in a sound-insulating property, which is preferably usable for a head up display and the like wherein a driver can look at the front view and an instrument display simultaneously without requiring to look down, and to provide a laminated glass.

The present invention is directed to interlayer film for a laminated glass, which comprises at least a pair of protection layers and a sound-insulating layer sandwiched between the pair of the protection layers, and which has a wedge shape as a cross-sectional shape, a wedge angle θ of 0.1 to 0.7 mrad, the maximum thickness of 2000 μm or thinner, and the minimum thickness of 400 μm or thicker, the minimum thickness of the sound-insulating layer being 20 μm or thicker.

The invention relates to porous concrete and a preparation method thereof, in particular to novel nano porous concrete which is prepared by taking thixotropic colloid as a template agent to form a uniform-water-phase three-dimensional network nano porous structure and adding cementing materials, fine aggregate, coarse aggregate, an admixture and an additive. The nano porous concrete has the characteristics of being light, high in strength and low in heat conductivity, can be prefabricated into bricks, building blocks, plates, and assembly type stairs, wallboards, balcony slabs and roof panel parts in a factory, can be also cast on a construction site, and further can be prepared into mortar, thereby having remarkable practical significance on promotion of development of housing industrialization and green building concrete material in our country.

The invention discloses a thermoplastic light compound plate and the manufacturing method, characterized in that it comprises acupuncture fiber carpet dipped in double faced foam of thermoplastic glue liquid and thermoplastic glue liquid layer coated on the surface, the density of compound plate is 0.35-0.90g/cm3, the weight of fiber scattered in bunchiness is 15-45% of acupuncture fiber carpet. The merit of invention is very remarkable. Special super long fiber and bunchiness fiber with certain proportion are maintained in the material so that the mechanical performance of material can be improved. In addition, the material is provided with foam structure, very good effect of heat and sound insulation. The invention is also provided with environmental protection and recovery.

Known intermediate foils for compound glasses with improved sound insulation consist of several layers or special materials which cannot be further processed in conventional plants. The aim of the present invention is to provide an intermediate foil for compound glasses with improved sound insulation, whereby said foil consists of one layer as far as possible and is based upon PVB. Said intermediate foil allows for an improved sound insulation of the compound glasses in room temperature and has essentially unchanged working properties, whereby said compound glasses are produced from the intermediate foil. To resolve the aim of the invention, an intermediate foil is provided which contains: 50 to 80 wt. % PVB (partially acetalised polyvinyl alcohol), 20 to 50 wt. % of a softener mixture containing 30 to 70 wt. %, calculated as a portion of the softener mixture, of one or more polyalkylene glycoles of the group consisting of polyalkylene glykoles of the general formula HO—(R—O)n-H with R=alkylene and n>5, block copolymers made of ethylene- and propylene glycole of the general formula HO—(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-H with n>2, m>3 and (n+m)<25, derivatives of block copolymers made of ethylene- and propylene glycole of the general formula R1O—(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-H or HO—(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-R1 with n>2, m>3 and (n+m)<25 and R1 as the organic radical, derivatives of polyalkylene glycols of the general formula R1-O—(R2-O)n-H with R2=alkylene and n>2, wherein the hydrogen of one of the two terminal hydroxygroups of the polyalkylene glycol is replaced by an organic Rest R1, derivatives of polyalkylene glycols of the general formula R1-O—(R2-O)n-R3 with R2=alkylene and n>5, wherein the hydrogen of the two terminal hydroxygroups of the polyalkylene glycol is replaced by an organic Rest R1 or R3.

The invention discloses general purpose Portland cement based ultra-light physical foamed concrete which is characterized by being prepared by mixing, forming and maintaining the following components in percentage by weight: 20-70% of general purpose Portland cement, 0-40% of a type A admixture or/and 0-40% of a type B admixture, 0.5-4% of a type C additive, 0.3-2% of a foaming agent, 0-1% of a water reducing agent, 0-4% of fibers and 25-60% of water. The general purpose Portland cement based ultra-light physical foamed concrete disclosed by the invention has the characteristics of ultra-low dry density, low thermal conductivity, relatively high strength, wide raw material source, low cost, simple preparation process, easy maintenance process selection and the like, is suitable to serve as an earthquake-proof and energy-absorbing material, a lightweight cushion course and a catalyst carrier material in a thermal insulation project, a floor heating project and a back filling project, and is particularly suitable for a building exterior wall external thermal insulation system, a roof thermal insulation system, a composite thermal insulation wall body and a buffer energy absorbing system.

The invention discloses a gravel-shaped attapulgite fireproof ceramsite. The key points of the technical scheme are as follows: the gravel-shaped attapulgite fireproof ceramsite is composed of high-viscosity attapulgite clay powder, attapulgite clay tailing powder, granulated blast furnace slag powder, iron tailing powder, coal gangue powder, bauxite tailing powder and diatomite tailing powder. After ingredients of the gravel-shaped attapulgite fireproof ceramsite are mixed, granulated, baked, cooled, crushed and screened, the obtained product is packaged to obtain the gravel-shaped attapulgite fireproof ceramsite. The gravel-shaped attapulgite fireproof ceramsite is a grain with an irregular shape and the grain is internally provided with a plurality of small air holes; and the gravel-shaped attapulgite fireproof ceramsite is the fireproof ceramsite which has the advantages of light weight, strong compressive strength, low coefficient of heat conductivity, high refractoriness, stablechemical performance, and good corrosion resistance and heat-preservation and sound-proof effects. The gravel-shaped attapulgite fireproof ceramsite can be produced by comprehensively utilizing a plurality of types of the tailings, so that the gravel-shaped attapulgite fireproof ceramsite is good for improving the resource utilization rate, changing wastes to valuable things, and protecting the environment; and the gravel-shaped attapulgite fireproof ceramsite is applicable to producing fireproof ceramsite concrete and heat-preservation and sound-proof materials.

A powder coating containing aerogel particles and a method for preparing the same relates to a powder coating and a preparation method, which solves the problem that the existing heat insulating composite material containing aerogel is not suitable for making thinner heat insulation material and spraying insulation layer on the component surface, and the aqueous coating has high water content, long construction period and low heat insulation property. The coating of the invention is prepared by 5-80 percent of aerogel particles and 20-95 percent of powderedd resin by volume percentage, and the method includes the following steps: firstly, aerogel, resin and additive are mixed by volume percentage; secondly, the mixed materials are delivered into a melting-extruder melt and extrude; thirdly, the extrudate is pressed into thin sections; fourthly, the thin sections are ground into small pieces by roller machine; fifthly, the small pieces are conveyed into an air staged milling equipment to grind, so as to obtain the powder coating. The powder coating containing aerogel of the invention has advantages of environmental protection, clearness, economy, high efficiency, and good heat insulation property, sound insulation property and surface hydrophobicity.

A retaining member in plastic, suited for retaining at least one line on a support, includes a basic body with a mounting area for mounting on the support and retaining area projecting from at least one side of the mounting area with at least one line seating for at least one line, and a resilient contact area projecting from the side of the mounting area that requires to be placed on the support.

The invention discloses an elastic membrane-type low-frequency sound insulation metamaterial structure which comprises two frames and a silicone rubber elastic membrane arranged between the two frames. A plurality of mass blocks are pasted on one side of the silicone rubber elastic membrane, and the mass blocks are separated with one another through the frames. The elastic membrane-type low-frequency sound insulation metamaterial structure solves the problems that a traditional sound insulation material is poor in low-frequency sound insulation performance, large in thickness, heavy in mass and the like and meets the five requirements of low-frequency sound insulation, wherein the five requirements include the low-frequency sound insulation requirement for noise below 500 Hz, the broadband requirement, the requirement for low structural thickness and low weight, and the requirement of easy design processing and low processing difficulty. The elastic membrane-type low-frequency sound insulation metamaterial structure has excellent low-frequency sound insulation performance, can effectively isolate low-frequency noise ranging from 200 Hz to 500 Hz, and can be applied to various carrying tools such as planes, automobiles, trains and ships and various types of building decoration. A brand new sound insulation solution is provided for creating low-noise working and living environments.

The invention relates to the field of products of sound insulation material, solves the problems in the prior art that the sound insulation material is poor in sound insulation effect, is incomprehensive in high and low frequency sound insulation, causes pollution and is easy to age, and provides an efficient sound insulation material and a manufacturing method thereof. The efficient sound insulation material includes a sound insulation layer, a sound absorption layer, and a bubble layer, wherein the bubble layer is located between the sound insulation layer and the sound absorption layer. The sound absorption layer is made of a sound insulation compound, and the sound insulation compound is prepared by raw materials of the following substances: a thermoplastic resin, inorganic fillers, and a foaming agent, wherein the inorganic fillers account for 15-80wt%, the foaming agent accounts for 5-15wt%, and the rest is the thermoplastic resin. In the efficient sound insulation material, the fillers with different particle diameters correspond to sound waves of different wave bands or frequencies, and thus consumption of sound energy of different frequencies is relatively comprehensive, and the sound insulation effect is good, so the sound insulation material is suitable for popularization and application.

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.

A custom in-ear headset. The headset includes a housing having a proximate housing portion and a distant housing portion. The distant housing portion is shaped and sized to fit inside an ear canal of a user. The headset includes a miniature speaker that is acoustically coupled to a sound outlet in the distant portion of the housing for conveying sound pressure to an ear canal of the user. The headset further includes any one or more of: (a) a microphone with a sound inlet in the proximate housing portion, (b) a bone conduction microphone arranged in the distant housing portion, or (c) a microphone with a sound inlet in the distant housing portion. The headset further includes at least one ridge projecting from and circumscribing the distant housing portion.

The present invention discloses a concrete cement foaming insulation brick, taking a concrete perforated brick as a main body. The concrete perforated brick is injected with a cement foam material, so that the cement foam material and the concrete perforated brick are fully combined. By adjusting the formulation and improving the process, the present invention makes full use of industrial wastes such as fly ash and coal gangue, does not need autoclaved curing, and is small in investment and simple in process. The foaming brick produced by the present invention has excellent heat insulation and sound insulation properties, and is high in strength, good in impact resistance, low in moisture absorption, light in weight, compression resistant, good in weather resistance, environmental-friendly and energy-saving, and non-toxic. The brick has great market space and development prospects in the application field of building energy efficiency.