134results about How to "Reduced sound insulation" patented technology

The invention relates to an aerogel composite board and a preparation method thereof. The composite board comprises a panel, a bottom board, and skeletons which are positioned between the panel and the bottom board and are crossed to form a plurality of cavities. The preparation method comprises the steps of coating a binding agent at one side of the bottom board so as to bind the skeletons with the bottom board; filling the cavities of the skeletons with silica aerogel; coating a binding agent at one side of the panel and binding with the skeletons filled with the silica aerogel. The aerogel composite board and the preparation method thereof have the advantage that the mechanical strengths of the panel, the bottom board and the whole composite board are improved by adopting a structure of enabling the skeletons as a center and compounding boards up and down; the coefficient of thermal conductivity of is reduced to 0.010-0.020 (W/m.k) through the aerogel evenly distributed in the cavities of the skeletons, so that the composite board is superior to various heat-insulating materials, and is next only to a vacuum insulating board; The application range of the composite board application scope is widespread, such as industry, the external walls of buildings, interior decoration, traffic transportation vehicles and ships.

The invention relates to a method for producing energy-saving baked bricks by comprehensively using papermaking sludge and pulverized fuel ash or furnace bottom slag. The method for producing energy-saving baked bricks is characterized in that 5 to 30 parts of biological sludge, 5 to 30 parts of deinked sludge, 1 to 5 parts of white mud from alkali recovery, 5 to 25 parts of pulverized fuel ash or furnace bottom slag, and 50 to 70 parts of shale are mixed by weight; the mixture is extruded and molded before the mixture is cut into adobe; the adobe is put in a ring kiln; after the adobe is dried, the dried adobe is burnt for four to eight hours at the temperature of 900 to 1050 DEG C, thus getting the finished product. The method for producing energy-saving baked bricks has the advantages that all of the solid wastes produced by papermaking plants such as papermaking sludge, pulverized fuel ash or furnace bottom slag are effectively used for producing energy-saving baked bricks having excellent performance; the bricks have the characteristics of light weight, sound insulation, heat insulation, thermal insulation and radioactivity indices lower than national standard, and applicability for building energy-saving buildings. In addition, the method for producing energy-saving backed bricks have the advantages of short production cycle, low manufacturing cost, simple process, energy conservation, soil conservation, and small exhaust emission of SO2, and clean production.

A light hollow block with polystyrene granule and its production are disclosed. The block consists of polystyrene granule, bluestone powder, fly ash, cement, slag, sand, waterproofing agent and binder. The process is carried out by adding water into the batching, mixing, adding hollow block into primary shaper, vibrating, pressurizing in block mould, forming and drying. Its advantages include high strength, low density, good thermal-insulating and sound-absorbing performances.

The invention discloses a heat-insulation sound-insulation light-weight high-strength aerated concrete building block and a producing method thereof. The building block is made from special concrete materials by molding, pouring and curing; the the special concrete materials include the following components in percentage by weight: 25-30 parts of cement, 26-31 parts of coal ash, 15-25 parts of ceramsite, 5-8 parts of expanded perlite, 18-25 parts of fresh water and 2-3 parts of cement foaming agent; and the green body of the aerated concrete building block is prepared by the steps of preparation of slurry, preparation of aerated concrete pouring material, pre-solidification molding of a pouring gland, pretreatment after pre-solidification molding, steam heating solidification and maintenance and removal of the die. A foam-slurry mixing device is used for mixing foams with primary slurry to form entraining slurry, the density of the entraining slurry is controlled by adjusting the input quantity of foams, and ceramisite and expanded perlite are added regularly and quantitatively to obtain the pouring material; furthermore, pouring is completed in the stirring state, therefore, the strength of the produced product is equivalent to that of the existing products, but the sound-insulation, heat-insulation and density performance indexes are prior to those of the existing products, and the dispersion is small.

The invention discloses a lightweight high-strength composite block and a production method thereof. The block comprises the following raw materials, by weight, 10-80 parts of building gesso, 10-30 parts of Portland cement, 10-40 parts of coal ash, and 0.1-1.5 parts of borax. The production method of the block comprises the following steps: 1, preparing the raw materials according to above weightparts; 2, using the raw materials according to a case that 500-1100kg of the raw materials are used in 1m<3> of a container, and adding water under fully stirring to obtain a slip until the weight of1m<3> of the slip reaches 1.6-1.65t; and 3, casting the slip into a mold, curing, demolding, and maintaining for 10-12h at 50-95DEG C. The block of the invention has the advantages of good sound and thermal insulation performance, good processability after molding, high strength, good water resistance, good freeze resistance and good permeability resistance.

A car door structure comprises a door inner panel 11, an interior door trim 12 and a noise insulation sheet 20. The interior door trim 12 is installed in the interior side of the door inner panel 11. The noise insulation sheet 20 is provided between the door inner panel 11 and the door trim 12, where it is hung down from the upper side to the lower side of the door inner panel like a curtain. The noise insulation sheet 20 is fixed to either the door inner panel 11 or the door trim 12. The noise insulation sheet 20 is provided at about an upper half or a lower half of the door inner panel 11, or it is provided at a central part of the door inner panel 11 while dividing approximately into three sections in a vertical direction or a horizontal direction.

The present invention discloses an antimony oxide compound flame-retardant PVC soft composite material and a preparation method thereof. The composite material includes the following materials: PVC (SG-3), a plasticizer, antimony trioxide, ammonium molybdate, montmorillonite, a calcium zinc stabilizer, EVA, epoxy soybean oil, a coupling agent and a dispersing agent. The preparation process of the product is as below: modifying antimony trioxide; mixing the modified antimony trioxide with ammonium molybdate, montmorillonite and EVA; screening the mixture by a vibrating centrifugal screening machine; and drying the screened powder and conducting waterproof packaging. The product of the invention has efficient flame retardant and smoke suppression performance, limiting oxygen index up to 31.6%, elongation at break of 210% and Shore hardness as low as 17, can be used as a direct added raw material for PVC product, or be added as a modification additive, and can also be used as soft fireproof materials, such as PVC leather and protective decoration materials.

A prefabricated spiral pnenolic aldehyde thermal insulation pipe and a manufacturing method thereof, a thermal insulation pipe is related. A prefabricated spiral pnenolic aldehyde thermal insulation pipe which has good heat preservation, insulation and sound isolation effect, is difficult in burning, no smoke in open flame, nontoxic, difficult in water absorption, not constringency, not deformation, good in machinery intensity, low in heat conductivity coefficient, no harm for human body, and broad in application and a method which is simple in technics, forming in one time, low in cost and can continuously or intermittently produce the prefabricated spiral pnenolic aldehyde thermal insulation pipe are provided. The thermal insulation pipe is a three layer composite pipe and is disposed with an inner pipe, an outer pipe and an intermediate pipe. The step is that: mixing formaldehyde-phenol resin, combustion inhibitor, modifying agent, and surfactants with proportion as A material; mixing firming agent and aerating powder as B material, opening a drying tunnel and heating it to predetermined temperature, starting a tube machine and a high-pressure foam maker, pouring A material and B material into the spiral pipe after mixing them with high pressure, pouring the material while making pipe, the pipe after being poured with foaming materials will be heated in the drying tunnel to foam, the one time form can be achieved, cutting after the foam body solidified and piling code by an automatic code putting machine.

The invention discloses a preparation method of vacuum glass. The method comprises the steps of (1) placing two pieces of plain glass with same size into a tempering furnace for tempering or placing into a bending and tempering furnace for bending and tempering so as to obtain plain or curved tempered glass; (2) adopting a chemical corrosion way or a laser etching way for setting support objects arranged in a dot matrix way on the surface of one piece of tempered glass; (3) placing the other piece of tempered glass on the support objects, and aligning the tempered glass at the tempered glass provided with the support objects in the step (2); (4) filling an edging material around a gap between the two pieces of tempered glass, quickly heating and curing the edging material and accomplishing sealing side parts of the two pieces of tempered glass; (5) pumping air between the two pieces of tempered glass through an air pumping hole so as to form a vacuum chamber between the two pieces of tempered glass, and quickly sealing the air pumping hole through an infrared heating or laser radiation way so as to accomplish the preparation of the vacuum glass. The movement of the support objects during a subsequent processing process is avoided, the requirement on temperature resistance of the material is reduced, and the noise is reduced.

The invention discloses a rapid processing device for sound-insulating holes of a sound-insulating board, which comprises a drilling frame. Both sides of the bottom of the drilling frame are fixedly connected with supporting legs, and the bottom of the supporting legs is fixedly connected with a base. The drilling The bottom of the left side of the frame is fixedly connected with the first support plate, and the top of the first support plate is fixedly connected with the sound insulation board body, and the right end of the sound insulation board body passes through the inner cavity of the drilling frame and extends to the right side of the drilling frame. The present invention can utilize a plurality of drilling rods to pair the sound insulation board body Drilling treatment can be carried out, and the temperature of the punched part can be cooled in time, and the impurities of the plate can be removed in time, which greatly improves the processing efficiency of the sound insulation board body, improves the quality of the sound insulation hole and the sound insulation effect, and then gives the sound insulation board processing Enterprises bring huge economic benefits.

The invention provides a compressor comprising a base, a compressor shell body, a compression assembly and a sound insulation assembly. The sound insulation assembly is arranged on the base and at least one surface of the compressor shell body and comprises laminating layers and sound absorbing layers, wherein each laminating layer comprises foaming sub-layers and non foaming sub layers, and the sound absorbing layers are arranged on the lower surfaces of the laminating layers. The compressor has a good sound insulation effect.

The invention discloses a water conservancy retaining wall project; the strength of a concrete wall is reinforced by a basalt braiding layer, the connection area of a keel and a concrete pouring layer is increased by arranging fixed racks on the keel, and a reinforcing rib arranged between the fixed racks can form a triangular support structure with the keel, thus reinforcing the whole solidness of a building curtain wall. Foaming cement is used as a buffering layer, which can reinforce firmness of the connection between an outer all board and the keel. As a lot of bubbles exist in the foaming cement, the buffering layer also has the effects on relieving the whole quality of the wall and insulating sound besides plays a role in buffering; through the design of using a concrete reinforced body as a foundation main body and supported and fixed by piles and support posts, the good carrying capacity of the foundation is ensured. The whole foundation is designed to be with a big end up, thus improving the gravity position of the foundation. The water conservancy retaining wall project is high in structural intensity, good in impact resistance, elegant in appearance and convenient to build.

A car door structure, which includes a door inner protection panel 11 , an inner door lining 12 and a sound insulation board 20 . The inner door liner 12 is installed inside the door inner panel 11 . The sound insulation panel 20 is provided between the door inner panel 11 and the door liner 12 , wherein the sound insulation panel hangs like a door curtain from the upper side of the door inner panel to the lower side thereof. The sound insulation panel 20 is fixed to both the door inner panel 11 and the door liner 12 . The sound insulation panel 20 is arranged on the upper half or the lower half of the door inner panel 11, or when the door inner panel 11 is divided into three parts in the vertical or horizontal direction, it is arranged on the door inner panel Middle part of 11.

The invention discloses a compressor anti-knock noise reduction box convenient to mount. The box comprises a base and a sound-proof box. The upper end of the base is connected with the sound-proof boxthrough a flange, the lower portion of the sound-proof box is provided with a mounting block, the mounting block is connected with the base, a fixing block is arranged in the middle of the upper endof the base, the side face of the fixing block is connected with a fixing rod through a pin shaft, in the use process of the compressor anti-knock noise reduction box convenient to mount, the fixing rod can rotate around the pin shaft, an assembling rod is arranged and moves in a sliding groove in the fixing rod through a sliding block, through the adjusting structure, a compressor can be conveniently mounted, the assembling efficiency is improved, production time is saved, a ball base and balls are arranged, the fixing rod can more portably rotate, time and labor are saved, the sound-proof box formed through bonding of a sound-proof plate, an asbestos fiber layer, a sound absorbing cotton layer and a honeycomb sound absorbing core layer has the good sound insulation effect, and can reducethe noise, and a damping spring is arranged to have the good damping effect on the compressor.

The invention discloses a composite material for a high-speed railway top board. The composite material comprises an outer aluminum plate, a reinforced composite material and an inner aluminum plate,wherein the reinforced composite material is arranged between the outer aluminum plate and the inner aluminum plate, the reinforced composite material includes a surface reinforcing material and a core material, the surface reinforcing material includes a sound-insulating flame-retardant layer, a prepreg layer, an impact-resistant layer, a strength layer, and a rigid structural layer, and the corematerial is a honeycomb core material. The structural design of the material is reasonable, and the selected novel reinforced composite material not only reduces the weight of a vehicle body, reducesenergy consumption, increases the impact resistance and sound insulation and flame retardant performance of the high-speed railway top board, and enhances the safety and comfort performance of a high-speed railway.