CN102977527A - Nano dolomite powder modified composite sound absorbing material and preparation method thereof - Google Patents
Nano dolomite powder modified composite sound absorbing material and preparation method thereof Download PDFInfo
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- CN102977527A CN102977527A CN2012104775467A CN201210477546A CN102977527A CN 102977527 A CN102977527 A CN 102977527A CN 2012104775467 A CN2012104775467 A CN 2012104775467A CN 201210477546 A CN201210477546 A CN 201210477546A CN 102977527 A CN102977527 A CN 102977527A
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Abstract
The invention discloses a nano dolomite powder modified composite sound absorbing material. The material is prepared from the following raw materials in parts by weight: 100-120 parts of barite powder, 50-60 parts of ceramsite, 40-50 parts of nano dolomite powder, 80-90 parts of vinyl acetate-acrylic emulsion, 55-65 parts of modified tree ashes, 15-20 parts of aluminium hydroxide, 20-30 parts of ceramic fibers, 10-20 parts of nanocarbon, 20-30 parts of EVA (ethylene-vinyl acetate copolymer), 15-20 parts of CPE (chlorinated polyethylene), 5-10 parts of SBR (styrene butadiene rubber), 5-8 parts of dioctyl maleate, 4-6 parts of decabromodiphenyl ether, 1-2 parts of dimethyl di(isooctyl thioglycolate) tin and 2-3 parts of zinc stearate. The material has the beneficial effects that the problem of developing and researching the sound absorbing material urgently is solved and the novel sound absorbing material which meets the requirements, can stand the tests of harsh environments and has the advantages of high tensile strength, high elongation, high breaking strength, good sound absorbing effect and the like is prepared.
Description
Technical field
The present invention relates to composite sound-absorbing material of a kind of nano-dolomite powder modification and preparation method thereof, belong to investigation of materials and production technical field.
Background technology
Along with the development of industrial production, communications and transportation, urban architecture, and the increase of the density of population, the increasing of home amenity (sound equipment, air-conditioning, televisor etc.), neighbourhood noise is day by day serious, and it has become large public hazards of polluting the human society environment.Noise not only can affect hearing, but also people's cardiovascular systems, neural system, endocrine system had a negative impact.
Existing sound absorbent material also has compound, but the compound performance index excellence of inorganic material and organic materials is less.See on the whole, China's sound absorbent material industry product working ability is not enough, in the research and development of high-end sound absorbent material with produce and exist larger gap compared with developed countries, as: all kinds vehicles (passenger vehicle, subway, high ferro), especially in recent years the demand of the sound absorbent material such as manned spacecraft, also lack with the market-construction industry of product maximum and to be connected, lack market awareness and building products working ability.Therefore, be badly in need of at present that research and development are a kind of can to stand the harsh and unforgiving environments test, have the tensile strength height, elongation is high, breaking tenacity is high, sound-absorbing effect good and the sound-absorbing material of the advantage such as low cost of manufacture.
Summary of the invention
The object of the invention is to, composite sound-absorbing material of a kind of nano-dolomite powder modification and preparation method thereof is provided, solves the prescription of matrix material, reduce the production cost that adopts single kind or plurality of raw materials, improve simultaneously the tensile strength of sound-absorbing effect and the material of material, elongation, breaking tenacity.Be used for the spray silk and make acoustical cotton.
The technical solution used in the present invention is as follows:
The composite sound-absorbing material of a kind of nano-dolomite powder modification, it is characterized in that its raw material by following weight part is made: ground barium sulfate 100-120, haydite 50-60, nano-dolomite powder 40-50, acrylate and vinyl acetate emulsion 80-90, modification trees ashes 55-65, aluminium hydroxide 15-20, ceramic fiber 20-30, nano-sized carbon 10-20, EVA 20-30, CPE 15-20, SBR 5-10, dioctyl maleate 5-8, decabromodiphynly oxide 4-6, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 1-2, Zinic stearas 2-3.
Described modification trees ashes are made by following methods: use first 10-15% salt acid soak trees ashes 3-4h, deionized water wash is clean, soak 3-4h with the 10-12% sodium hydroxide solution again, extremely neutral with deionized water wash again, oven dry, add and be equivalent to the sodium lignosulfonate of trees ashes weight 2-3%, the Union carbide A-162 of 1-2%, the epoxidation tri-glyceride of 2-3%, the ceramics powder of 3-5%, high speed 1200-1500r/min stirs 20-30min, and the ovendry power breakdown mill becomes ultrafine powder to get final product.
The composite sound-absorbing material preparation method of nano-dolomite powder modification is characterized in that may further comprise the steps:
(1) ground barium sulfate, haydite, nano-dolomite powder is dry except moisture respectively, drying temperature is 110-120 ℃, be 2-3h time of drying, by pressing afterwards formulation ratio ground barium sulfate, haydite, nano-dolomite powder, aluminium hydroxide, acrylate and vinyl acetate emulsion are added in the high-speed mixer, speed with 500-800rpm under 150-160 ℃ mixes 3-5min, add modification trees ashes again and continue blend 5-8min, it is stand-by that material is cooled to normal temperature;
(2) EVA, SBR, CPE, dioctyl maleate, decabromodiphynly oxide, dimethyl dimercapto 2-ethyl hexyl ethanoate tin, Zinic stearas being added Mixers with Multi-direction Movement carries out just mixed, just mixed 4-6min, then enter high-speed mixer, add nano-sized carbon, ceramic fiber, speed with 1500-2000rpm under 105-110 ℃ stirs 2-5min, and it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) is made adds twin screw mixings forcing machine to be processed, and requires 180-280 ℃ of Temperature Setting scope according to product index, then with the material input granulator granulation of extruding, namely gets the composite sound-absorbing material.
Beneficial effect of the present invention is as follows:
The present invention passes through formula adjustment and process modification, utilize the inorganic powders such as modification trees ashes clad nano ground dolomite, ground barium sulfate, thereby improve sound-absorbing effect and the intensity of sound absorbent material, solved well the contradiction that sound absorbent material intensity and sound absorption qualities can not get both.The invention solves the research and development problem of present anxious sound absorbent material, produced the harsh and unforgiving environments that can stand that satisfies the demands and tested, have the sound-absorbing material of the advantages such as tensile strength height, elongation is high, breaking tenacity is high, sound-absorbing effect is good.Owing to adopted the inorganic material of larger proportion, therefore reduced production cost, because the intensity of inorganic material is higher, improved the mechanical property of material simultaneously.
Embodiment
The composite sound-absorbing material of a kind of nano-dolomite powder modification, its raw material by following weight part is made: 115 parts of ground barium sulfates, 50 parts of haydites, 45 parts in nano-dolomite powder, 80 parts of acrylate and vinyl acetate emulsions, 60 parts in modification trees ashes, 16 parts in aluminium hydroxide, 24 parts of ceramic fibers, 16 parts of nano-sized carbon, 15 parts of 28 parts of EVA, CPE, 8 parts of SBR, 6 parts of dioctyl maleates, 5 parts of decabromodiphynly oxides, 1.5 parts in dimethyl dimercapto 2-ethyl hexyl ethanoate tin, 2 parts of Zinic stearass.
Wherein, described modification trees ashes are made by following methods: use first 12% salt acid soak trees ashes 4h, deionized water wash is clean, soak 4h with 12% sodium hydroxide solution again, extremely neutral with deionized water wash again, oven dry adds and is equivalent to the sodium lignosulfonate of trees ashes weight 3%, 2% Union carbide A-162,3% epoxidation tri-glyceride, 5% ceramics powder, high speed 1500r/min stirs 20min, and the ovendry power breakdown mill becomes ultrafine powder to get final product.
The composite sound-absorbing material preparation method of nano-dolomite powder modification may further comprise the steps:
(1) ground barium sulfate, haydite, nano-dolomite powder is dry except moisture respectively, drying temperature is 110 ℃, be 3h time of drying, by pressing afterwards formulation ratio ground barium sulfate, haydite, nano-dolomite powder, aluminium hydroxide, acrylate and vinyl acetate emulsion are added in the high-speed mixer, speed with 800rpm under 155 ℃ mixes 4min, add modification trees ashes again and continue blend 6min, it is stand-by that material is cooled to normal temperature;
(2) EVA, SBR, CPE, dioctyl maleate, decabromodiphynly oxide, dimethyl dimercapto 2-ethyl hexyl ethanoate tin, Zinic stearas being added Mixers with Multi-direction Movement carries out just mixed, just mixed 5min, then enter high-speed mixer, add nano-sized carbon, ceramic fiber, speed with 1700rpm under 110 ℃ stirs 3min, and it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) is made adds twin screw mixings forcing machine to be processed, and requiring Temperature Setting according to product index is 260 ℃, then with the material input granulator granulation of extruding, namely gets the composite sound-absorbing material.
Detect index: sound absorption coefficient 1.22, tensile strength 1415kPa, elongation 56%, breaking tenacity 5247N/m.4369 yuan/tons of costs.
Claims (3)
1. the composite sound-absorbing material of nano-dolomite powder modification, it is characterized in that its raw material by following weight part is made: ground barium sulfate 100-120, haydite 50-60, nano-dolomite powder 40-50, acrylate and vinyl acetate emulsion 80-90, modification trees ashes 55-65, aluminium hydroxide 15-20, ceramic fiber 20-30, nano-sized carbon 10-20, EVA 20-30, CPE 15-20, SBR 5-10, dioctyl maleate 5-8, decabromodiphynly oxide 4-6, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 1-2, Zinic stearas 2-3.
2. the composite sound-absorbing material of nano-dolomite powder according to claim 1 modification, it is characterized in that, described modification trees ashes are made by following methods: use first 10-15% salt acid soak trees ashes 3-4h, deionized water wash is clean, soak 3-4h with the 10-12% sodium hydroxide solution again, extremely neutral with deionized water wash again, oven dry, add the sodium lignosulfonate that is equivalent to trees ashes weight 2-3%, the Union carbide A-162 of 1-2%, the epoxidation tri-glyceride of 2-3%, the ceramics powder of 3-5%, high speed 1200-1500r/min stirs 20-30min, and the ovendry power breakdown mill becomes ultrafine powder to get final product.
3. the composite sound-absorbing material preparation method of a nano-dolomite powder as claimed in claim 1 modification is characterized in that may further comprise the steps:
(1) ground barium sulfate, haydite, nano-dolomite powder is dry except moisture respectively, drying temperature is 110-120 ℃, be 2-3h time of drying, by pressing afterwards formulation ratio ground barium sulfate, haydite, nano-dolomite powder, aluminium hydroxide, acrylate and vinyl acetate emulsion are added in the high-speed mixer, speed with 500-800rpm under 150-160 ℃ mixes 3-5min, add modification trees ashes again and continue blend 5-8min, it is stand-by that material is cooled to normal temperature;
(2) EVA, SBR, CPE, dioctyl maleate, decabromodiphynly oxide, dimethyl dimercapto 2-ethyl hexyl ethanoate tin, Zinic stearas being added Mixers with Multi-direction Movement carries out just mixed, just mixed 4-6min, then enter high-speed mixer, add nano-sized carbon, ceramic fiber, speed with 1500-2000rpm under 105-110 ℃ stirs 2-5min, and it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) is made adds twin screw mixings forcing machine to be processed, and requires 180-280 ℃ of Temperature Setting scope according to product index, then with the material input granulator granulation of extruding, namely gets the composite sound-absorbing material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2530526A (en) * | 2014-09-25 | 2016-03-30 | Amril Ag | Styrene-butadiene rubber (SBR)-CNT filled masterbatch |
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| US5013405A (en) * | 1987-01-12 | 1991-05-07 | Usg Interiors, Inc. | Method of making a low density frothed mineral wool |
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| CN1759139A (en) * | 2003-03-12 | 2006-04-12 | 佩特里特公司 | Structural and other composite materials and methods for making same |
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| GB2530526A (en) * | 2014-09-25 | 2016-03-30 | Amril Ag | Styrene-butadiene rubber (SBR)-CNT filled masterbatch |
| GB2530526B (en) * | 2014-09-25 | 2017-02-08 | Amril Ag | Styrene-butadiene rubber (SBR)-CNT filled masterbatch |
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Owner name: YANTAI HUANQIU AUTO-PARTS CO., LTD. Free format text: FORMER OWNER: WUHU YUEFEI NEW SOUND-ABSORBING MATERIAL CO., LTD. Effective date: 20150429 |
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Effective date of registration: 20150429 Address after: 264000 Jilin Road, Qixia economic and Technological Development Zone, Yantai, Shandong, Zhejiang Patentee after: Yantai globe Beijing Great Automotive Components Company Limited Address before: 241009 No. 6, Jinshan Road, hi tech Industrial Development Zone, Yijiang District, Anhui, Wuhu Patentee before: Wuhu Yuefei New Acoustic Material Co., Ltd. |
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