CN105239363A - Nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof - Google Patents
Nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof Download PDFInfo
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- CN105239363A CN105239363A CN201510622534.2A CN201510622534A CN105239363A CN 105239363 A CN105239363 A CN 105239363A CN 201510622534 A CN201510622534 A CN 201510622534A CN 105239363 A CN105239363 A CN 105239363A
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- polyurethane
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Abstract
The present invention discloses a nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton, which is prepared from the following raw materials by weight: 10-15 parts of thermoplastic polyurethane, 30-40 parts of polypropylene, 3-5 parts of nanometer carbon fibers, 0.2-0.4 part of triethanolamine, 3-5 parts of acetyl tributyl citrate, 1-2 parts of polyethylene glycol monooleate, 0.5-1 part of sorbitol, 0.1-0.2 part of an antioxidant 1010, 0.5-1 part of polyvinylpyrrolidone, and 10-15 parts of a modified silica gel solution. The nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton of the present invention has characteristics of effective medium-low frequency noise absorbing control, good sound absorption, excellent mechanical property, high stability, excellent impact resistance, excellent high-temperature resistance, and wide application range.
Description
Technical field
The present invention relates to sound-absorbing material technical field, particularly relate to a kind of carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton and preparation method thereof.
Background technology
Along with the development of economy and urban construction, noise pollution is day by day serious, brings harmful effect to the daily life of people, study, reduces the harm that noise brings and becomes important topic.People make sound-absorbing material control noise, and make noise obtain isolated or weaken, wherein porous material has wider sound absorption frequency range, is widely used.The feature of sound-absorbing porous material is generally the sound absorbing capabilities that the sound absorbing capabilities of high-frequency band is better than low frequency frequency range, and during it intercepts, low frequency noise is more difficult.By changing material property, utilizing the viscoplasticity of material to be thermal dissipation by the Conversion of Energy of mechanical oscillation and acoustic vibration, reaching the function of vibration and noise reducing, be conducive to the absorption controlling medium and low frequency noise, improve the sound absorbing capabilities of sound-absorbing material, expand its range of application.Noise is present in various condition, such as needs the sports center such as indoor sport venue, fitness center of bearing high frequent impact, therefore also needs sound-absorbing material to have good impact resistance, ensure that it can stablize use.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of carbon nano-fiber-polyurethane-polypropylene elastic composite acoustical cotton, it is obtained by the raw material of following weight parts:
Thermoplastic polyurethane 10-15, polypropylene 30-40, carbon nano-fiber 3-5, triethanolamine 0.2-0.4, tributyl 2-acetylcitrate 3-5, polyethylene glycol monooleate 1-2, sorbierite 0.5-1, antioxidant 1010 0.1-0.2, polyvinylpyrrolidone 0.5-1, modified silica-gel solution 10-15;
Wherein modified silica-gel solution is made up of the raw material of following weight portion: benzene emulsion 1-2, sodium metasilicate 6-10, polyvinyl alcohol 1-2, sucrose 1-2, castor oil polyoxyethylene ether 0.1-0.2, dimethicone 0.5-1, water 80-100; Sodium metasilicate, sucrose, castor oil polyoxyethylene ether and dimethicone are added to the water to stir by the preparation method of modified silica-gel solution, with the sulfuric acid solution of 6-8%, pH is adjusted to 6-7, then under 80-85 DEG C of condition, add all the other raw materials stir 0.5-1h, leave standstill 0.5-1h after cooling, to obtain final product.
A preparation method for carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton, comprises the following steps:
(1) first by carbon nano-fiber, triethanolamine, polyethylene glycol monooleate in 60-80 DEG C, 600-1000r/min mixing 10-15min, add antioxidant 1010, tributyl 2-acetylcitrate, thermoplastic polyurethane and polypropylene 120-150 DEG C, 1500-2000r/min mixing 20-30min again, then to add in double screw extruder 220-260 DEG C and melt extrude granulation, obtain compound slice;
(2) by the compound slice in (1) by extruding from die head spinneret orifice under 220-240 DEG C of condition after screw extruder melting, drawing-off under 280-300 DEG C of hot air acting also becomes net on the reception device, obtain elastic composite cellucotton, receiving range is 15-20cm;
(3) water adding 20-30 times of weight after being mixed by all the other raw materials obtains maceration extract, then the elastic composite cellucotton in (2) is flooded 1-2h in maceration extract, finally dry process 3-5h under 160-180 DEG C of condition, namely obtains carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton after cooling.
Advantage of the present invention is:
The present invention is by blended for the materials such as polyurethane, polypropylene and Nano Silver and obtain elastic composite cellucotton by melt-blown process, there is loose structure and viscoplasticity, effectively can absorb noise, acoustic energy is dissipated, improve effect of its vibration and noise reducing, supported porous compound silica gel material in cellucotton is made by dipping modified silica-gel solution, acoustical cotton is made to have abundant pore structure, effectively can control the absorption of medium and low frequency noise, sound absorbing capabilities is good, good mechanical performance, and stability is high, and there is excellent shock resistance and resistance to elevated temperatures, have wide range of applications.
Detailed description of the invention
A kind of carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton, it is obtained by the raw material of following weight parts:
Thermoplastic polyurethane 10, polypropylene 30, carbon nano-fiber 3, triethanolamine 0.2, tributyl 2-acetylcitrate 3, polyethylene glycol monooleate 1, sorbierite 0.5, antioxidant 1010 0.1, polyvinylpyrrolidone 0.5, modified silica-gel solution 10;
Wherein modified silica-gel solution is made up of the raw material of following weight portion: benzene emulsion 1, sodium metasilicate 6, polyvinyl alcohol 1, sucrose 1, castor oil polyoxyethylene ether 0.1, dimethicone 0.5, water 80; Sodium metasilicate, sucrose, castor oil polyoxyethylene ether and dimethicone are added to the water to stir by the preparation method of modified silica-gel solution, with the sulfuric acid solution of 6%, pH is adjusted to 6, then under 80 DEG C of conditions, add all the other raw materials stir 0.5h, leave standstill 0.5h after cooling, to obtain final product.
A preparation method for carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton, comprises the following steps:
(1) first by carbon nano-fiber, triethanolamine, polyethylene glycol monooleate in 60 DEG C, 600r/min mixing 10min, add antioxidant 1010, tributyl 2-acetylcitrate, thermoplastic polyurethane and polypropylene 120 DEG C, 1500r/min mixing 20min again, then to add in double screw extruder 220-260 DEG C and melt extrude granulation, obtain compound slice;
(2) by the compound slice in (1) by extruding from die head spinneret orifice under 220 DEG C of conditions after screw extruder melting, drawing-off under 280 DEG C of hot air actings also becomes net on the reception device, obtain elastic composite cellucotton, receiving range is 15cm;
(3) water adding 20 times of weight after being mixed by all the other raw materials obtains maceration extract, then the elastic composite cellucotton in (2) is flooded 1h in maceration extract, finally dry process 3h under 160 DEG C of conditions, namely obtains carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton after cooling.
The sound absorbing capabilities of above-mentioned obtained acoustical cotton (10mm is thick) is as follows:
| Frequency/HZ | 500 | 1000 | 1500 | 2000 | 2500 |
| Acoustic absorptivity | 0.35 | 0.71 | 0.83 | 0.90 | 0.94 |
Claims (2)
1. carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton, is characterized in that, it is obtained by the raw material of following weight parts:
Thermoplastic polyurethane 10-15, polypropylene 30-40, carbon nano-fiber 3-5, triethanolamine 0.2-0.4, tributyl 2-acetylcitrate 3-5, polyethylene glycol monooleate 1-2, sorbierite 0.5-1, antioxidant 1010 0.1-0.2, polyvinylpyrrolidone 0.5-1, modified silica-gel solution 10-15;
Described modified silica-gel solution is made up of the raw material of following weight portion: benzene emulsion 1-2, sodium metasilicate 6-10, polyvinyl alcohol 1-2, sucrose 1-2, castor oil polyoxyethylene ether 0.1-0.2, dimethicone 0.5-1, water 80-100; Sodium metasilicate, sucrose, castor oil polyoxyethylene ether and dimethicone are added to the water to stir by the preparation method of modified silica-gel solution, with the sulfuric acid solution of 6-8%, pH is adjusted to 6-7, then under 80-85 DEG C of condition, add all the other raw materials stir 0.5-1h, leave standstill 0.5-1h after cooling, to obtain final product.
2. the preparation method of a kind of carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton according to claim 1, is characterized in that, comprise the following steps:
(1) first by carbon nano-fiber, triethanolamine, polyethylene glycol monooleate in 60-80 DEG C, 600-1000r/min mixing 10-15min, add antioxidant 1010, tributyl 2-acetylcitrate, thermoplastic polyurethane and polypropylene 120-150 DEG C, 1500-2000r/min mixing 20-30min again, then to add in double screw extruder 220-260 DEG C and melt extrude granulation, obtain compound slice;
(2) by the compound slice in (1) by extruding from die head spinneret orifice under 220-240 DEG C of condition after screw extruder melting, drawing-off under 280-300 DEG C of hot air acting also becomes net on the reception device, obtain elastic composite cellucotton, receiving range is 15-20cm;
(3) water adding 20-30 times of weight after being mixed by all the other raw materials obtains maceration extract, then the elastic composite cellucotton in (2) is flooded 1-2h in maceration extract, finally dry process 3-5h under 160-180 DEG C of condition, namely obtains carbon nano-fiber/polyurethane/polypropylene elastic composite acoustical cotton after cooling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510622534.2A CN105239363A (en) | 2015-09-24 | 2015-09-24 | Nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
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| CN201510622534.2A CN105239363A (en) | 2015-09-24 | 2015-09-24 | Nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
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| CN201510622534.2A Pending CN105239363A (en) | 2015-09-24 | 2015-09-24 | Nanometer carbon fiber/polyurethane/polypropylene elastic composite sound-absorbing cotton and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506857A (en) * | 2016-01-26 | 2016-04-20 | 芜湖环瑞汽车内饰件有限公司 | Acoustic wool with high impact resistance and preparation method thereof |
| CN116815349A (en) * | 2023-05-25 | 2023-09-29 | 武汉轩楷材料科技有限公司 | High-elasticity automobile sound absorbing cotton and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696126A (en) * | 2013-11-25 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Sound-absorbing cotton with mosquito avoiding function and preparation method thereof |
| CN103710872A (en) * | 2013-11-25 | 2014-04-09 | 芜湖跃飞新型吸音材料股份有限公司 | Nonwoven cloth sound absorbing cotton containing wood sawdust |
| CN103710863A (en) * | 2013-11-25 | 2014-04-09 | 芜湖跃飞新型吸音材料股份有限公司 | Natural-clay-containing light nonwoven material for sound absorbing cotton |
| CN103963402A (en) * | 2014-04-23 | 2014-08-06 | 安徽依采妮纤维材料科技有限公司 | Isotactic polypropylene fiber/PET (Polyethylene Terephthalate) fiber composite non-woven fabric sound absorbing cotton |
| CN104553172A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Activated carbon-EVA composite emulsion coated polypropylene-based non-woven sound absorbing material for automobile interior decoration |
-
2015
- 2015-09-24 CN CN201510622534.2A patent/CN105239363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696126A (en) * | 2013-11-25 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Sound-absorbing cotton with mosquito avoiding function and preparation method thereof |
| CN103710872A (en) * | 2013-11-25 | 2014-04-09 | 芜湖跃飞新型吸音材料股份有限公司 | Nonwoven cloth sound absorbing cotton containing wood sawdust |
| CN103710863A (en) * | 2013-11-25 | 2014-04-09 | 芜湖跃飞新型吸音材料股份有限公司 | Natural-clay-containing light nonwoven material for sound absorbing cotton |
| CN103963402A (en) * | 2014-04-23 | 2014-08-06 | 安徽依采妮纤维材料科技有限公司 | Isotactic polypropylene fiber/PET (Polyethylene Terephthalate) fiber composite non-woven fabric sound absorbing cotton |
| CN104553172A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Activated carbon-EVA composite emulsion coated polypropylene-based non-woven sound absorbing material for automobile interior decoration |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506857A (en) * | 2016-01-26 | 2016-04-20 | 芜湖环瑞汽车内饰件有限公司 | Acoustic wool with high impact resistance and preparation method thereof |
| CN116815349A (en) * | 2023-05-25 | 2023-09-29 | 武汉轩楷材料科技有限公司 | High-elasticity automobile sound absorbing cotton and preparation method thereof |
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Application publication date: 20160113 |
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