CN102964760B - Calcined bauxite modified composite sound absorbing material and preparation method thereof - Google Patents
Calcined bauxite modified composite sound absorbing material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a calcined bauxite modified composite sound absorbing material which is prepared from the following raw materials in parts by weight: 100-120 parts of barite powder, 50-60 parts of haydite, 40-50 parts of calcined bauxite, 80-90 parts of pure acrylic emulsion, 55-65 parts of modified wood ash, 15-20 parts of antimony trioxide, 20-30 parts of aluminum silicate fiber, 10-20 parts of nano carbon, 20-30 parts of EVA (ethylene vinyl-acetate copolymer), 15-20 parts of CPE (chlorinated polyethylene), 5-10 parts of EMDP (2-ethyl-5-methyl-3,3-diphenyl-1-pyrroline), 5-8 parts of dioctyl adipate, 4-6 parts of ammonium polyphosphate, 2-3 parts of zinc stearate and 1-2 parts of tribasic lead sulfate. According to the invention, the existing urgent sound absorbing material development problem is solved; and a novel sound absorbing material which meets the requirements, can be adapted to severe environments and has the advantages of high tensile strength, high extension percentage, high breaking strength, good sound absorbing effect and the like can be prepared.
Description
Technical field
The present invention relates to a kind of composite sound-absorbing material calcining bauxitic clay 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, increasing of home amenity (sound equipment, air-conditioning, televisor etc.), neighbourhood noise is day by day serious, and it has become the large public hazards polluting human society environment.Noise not only can affect hearing, but also has a negative impact to the cardiovascular systems of people, neural system, endocrine system.
Existing sound absorbent material also has compound, but the performance index excellence of inorganic material and organic materials compound is less.See on the whole, China's sound absorbent material industry product working ability is not enough, the research and development and production of high-end sound absorbent material also exist larger gap compared with developed countries, as: all kinds vehicles (passenger vehicle, subway, high ferro), especially the demand of the sound absorbent material such as manned spacecraft in recent years, market-the construction industry maximum with product also lacks and is connected, and lacks market awareness and building products working ability.Therefore, be badly in need of at present research and development one and can stand harsh and unforgiving environments test, have that tensile strength is high, elongation is high, breaking tenacity is high, sound-absorbing effect is good and the sound-absorbing material of the advantages such as low cost of manufacture.
Summary of the invention
The object of the invention is to, a kind of composite sound-absorbing material calcining bauxitic clay modification and preparation method thereof is provided, solve the formula of matrix material, reduce the production cost adopting single or plurality of raw materials, improve the sound-absorbing effect of material and the tensile strength of material simultaneously, elongation, breaking tenacity, make acoustical cotton for spraying silk.
The technical solution used in the present invention is as follows:
Calcine a composite sound-absorbing material for bauxitic clay modification, it is made up of the raw material of following weight part: ground barium sulfate 100-120, haydite 50-60, calcining bauxitic clay 40-50, pure-acrylic emulsion 80-90, modification tree ash 55-65, antimonous oxide 15-20, aluminum silicate fiber 20-30, nano-sized carbon 10-20, EVA 20-30, CPE 15-20, EMDP 5-10, Octyl adipate 5-8, ammonium polyphosphate 4-6, Zinic stearas 2-3, lead sulfate tribasic 1-2.
Described modification tree ash is obtained by following methods: first use 10-15% salt acid soak tree ash 3-4h, deionized water wash is clean, 3-4h is soaked again with 10-12% sodium hydroxide solution, extremely neutral with deionized water wash again, dry, add the sodium lignosulfonate, the Union carbide A-162 of 1-2%, the epoxidation tri-glyceride of 2-3%, the ceramics powder of 3-5% that are equivalent to tree ash weight 2-3%, high speed 1200-1500r/min stirs 20-30min, and ovendry power breakdown mill becomes ultrafine powder.
The preparation method of the composite sound-absorbing material of calcining bauxitic clay modification, comprises the following steps:
(1) ground barium sulfate, haydite, calcining bauxitic clay is dry except moisture respectively, drying temperature is 110-120 DEG C, time of drying is 2-3h, by formulation ratio, ground barium sulfate, haydite, calcining bauxitic clay, antimonous oxide, pure-acrylic emulsion are added in high-speed mixer by rear, speed with 500-800rpm at 150-160 DEG C is uniformly mixed 3-5min, add modification tree ash again and continue blended 5-8min, it is stand-by that material is cooled to normal temperature;
(2) EVA, EMDP, CPE, Octyl adipate, ammonium polyphosphate, Zinic stearas, lead sulfate tribasic are added Mixers with Multi-direction Movement and carry out just mixed, just mixed 4-6min, then high-speed mixer is entered, add nano-sized carbon, aluminum silicate fiber, at 105-110 DEG C, stir 2-5min with the speed of 1500-2000rpm, it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) obtain is added twin screw mixing extruders to process, require temperature setting range 180-280 DEG C according to product index, the material then will extruded drops into granulator granulation, obtains 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 the coated calcining bauxitic clay of modification tree ash, ground barium sulfate, thus improve the sound-absorbing effect of sound absorbent material and intensity, solve the contradiction that sound absorbent material intensity and sound absorption qualities can not get both well.The invention solves the research and development problem of current anxious sound absorbent material, produced the harsh and unforgiving environments that can stand satisfied the demands and tested, there is the sound-absorbing material of the advantages such as tensile strength is high, elongation is high, breaking tenacity is high, sound-absorbing effect is good.Owing to have employed the inorganic material of larger proportion, because this reducing production cost, simultaneously because the intensity of inorganic material is higher, improve the mechanical property of material.
Embodiment
Calcine a composite sound-absorbing material for bauxitic clay modification, it is made up of the raw material of following weight part: ground barium sulfate 105 parts, haydite 56 parts, calcining bauxitic clay 45 parts, pure-acrylic emulsion 84 parts, modification tree ash 56 parts, antimonous oxide 16 parts, aluminum silicate fiber 20 parts, nano-sized carbon 15 parts, EVA 25 parts, CPE 18 parts, EMDP 8 parts, Octyl adipate 6 parts, ammonium polyphosphate 5 parts, Zinic stearas 2 parts, lead sulfate tribasic 1.5 parts.
Wherein, described modification tree ash is obtained by following methods: first use 15% salt acid soak tree ash 3h, deionized water wash is clean, 3h is soaked again with 12% sodium hydroxide solution, again with deionized water wash to neutral, dry, add be equivalent to tree ash weight 2% sodium lignosulfonate, 1.5% Union carbide A-162, the epoxidation tri-glyceride of 2%, the ceramics powder of 4%, high speed 1200r/min stirs 30min, and ovendry power breakdown mill becomes ultrafine powder.
The preparation method of the composite sound-absorbing material of calcining bauxitic clay modification, comprises the following steps:
(1) ground barium sulfate, haydite, calcining bauxitic clay is dry except moisture respectively, drying temperature is 115 DEG C, time of drying is 2h, by formulation ratio, ground barium sulfate, haydite, calcining bauxitic clay, antimonous oxide, pure-acrylic emulsion are added in high-speed mixer by rear, speed with 600rpm at 155 DEG C is uniformly mixed 5min, add modification tree ash again and continue blended 6min, it is stand-by that material is cooled to normal temperature;
(2) EVA, EMDP, CPE, Octyl adipate, ammonium polyphosphate, Zinic stearas, lead sulfate tribasic are added Mixers with Multi-direction Movement and carry out just mixed, just mixed 5min, then high-speed mixer is entered, add nano-sized carbon, aluminum silicate fiber, at 108 DEG C, stir 3min with the speed of 1800rpm, it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) obtain is added twin screw mixing extruders to process, require that temperature is set as 220 DEG C according to product index, the material then will extruded drops into granulator granulation, obtains composite sound-absorbing material.
Testing index: sound absorption coefficient 1.25, tensile strength 1458kPa, elongation 52%, breaking tenacity 5143N/m.Cost 4479 yuan/ton.
Claims (1)
1. calcine a preparation method for the composite sound-absorbing material of bauxitic clay modification, it is characterized in that, composite sound-absorbing material is made up of the raw material of following weight part:
Ground barium sulfate 100-120, haydite 50-60, calcining bauxitic clay 40-50, pure-acrylic emulsion 80-90, modification tree ash 55-65, antimonous oxide 15-20, aluminum silicate fiber 20-30, nano-sized carbon 10-20, EVA 20-30, CPE 15-20, EMDP 5-10, Octyl adipate 5-8, ammonium polyphosphate 4-6, Zinic stearas 2-3, lead sulfate tribasic 1-2; Described modification tree ash is obtained by following methods: first use 10-15% salt acid soak tree ash 3-4h, deionized water wash is clean, 3-4h is soaked again with 10-12% sodium hydroxide solution, extremely neutral with deionized water wash again, dry, add the sodium lignosulfonate, the Union carbide A-162 of 1-2%, the epoxidation tri-glyceride of 2-3%, the ceramics powder of 3-5% that are equivalent to tree ash weight 2-3%, high speed 1200-1500r/min stirs 20-30min, and ovendry power breakdown mill becomes ultrafine powder;
The preparation method of this composite sound-absorbing material comprises the following steps:
(1) ground barium sulfate, haydite, calcining bauxitic clay is dry except moisture respectively, drying temperature is 110-120 DEG C, time of drying is 2-3h, by formulation ratio, ground barium sulfate, haydite, calcining bauxitic clay, antimonous oxide, pure-acrylic emulsion are added in high-speed mixer by rear, speed with 500-800rpm at 150-160 DEG C is uniformly mixed 3-5min, add modification tree ash again and continue blended 5-8min, it is stand-by that material is cooled to normal temperature;
(2) EVA, EMDP, CPE, Octyl adipate, ammonium polyphosphate, Zinic stearas, lead sulfate tribasic are added Mixers with Multi-direction Movement and carry out just mixed, just mixed 4-6min, then high-speed mixer is entered, add nano-sized carbon, aluminum silicate fiber, at 105-110 DEG C, stir 2-5min with the speed of 1500-2000rpm, it is stand-by that material is cooled to normal temperature;
(3) material that above-mentioned steps (1) and step (2) obtain is added twin screw mixing extruders to process, require temperature setting range 180-280 DEG C according to product index, the material then will extruded drops into granulator granulation, obtains composite sound-absorbing material.
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| CN103710868A (en) * | 2013-11-25 | 2014-04-09 | 芜湖跃飞新型吸音材料股份有限公司 | Healthcare sound absorption cotton made of traditional Chinese medicine and method for manufacturing healthcare sound absorption cotton |
| CN103696137A (en) * | 2013-11-26 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Environment-friendly flame-retardant noise-absorbing cotton and preparation method thereof |
| CN107216588A (en) * | 2017-07-19 | 2017-09-29 | 合肥广民建材有限公司 | A kind of new sound-absorbing material for building and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114336A (en) * | 1994-06-21 | 1996-01-03 | 中国石油化工总公司石油化工科学研究院 | Sound-insulation vibration-proof paint |
| CN1346814A (en) * | 2001-09-29 | 2002-05-01 | 曾令可 | Sound-absorbing material for subway and its preparing process |
| CN102452825A (en) * | 2010-10-22 | 2012-05-16 | 王永涛 | Fireproof sound-insulation thermal insulation brick |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114336A (en) * | 1994-06-21 | 1996-01-03 | 中国石油化工总公司石油化工科学研究院 | Sound-insulation vibration-proof paint |
| CN1346814A (en) * | 2001-09-29 | 2002-05-01 | 曾令可 | Sound-absorbing material for subway and its preparing process |
| CN102452825A (en) * | 2010-10-22 | 2012-05-16 | 王永涛 | Fireproof sound-insulation thermal insulation brick |
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