CN105239360A - Rosin/polyurethane/polypropylene elastic composite sound absorbing cotton, and preparation method thereof - Google Patents
Rosin/polyurethane/polypropylene elastic composite sound absorbing cotton, and preparation method thereof Download PDFInfo
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- CN105239360A CN105239360A CN201510618497.8A CN201510618497A CN105239360A CN 105239360 A CN105239360 A CN 105239360A CN 201510618497 A CN201510618497 A CN 201510618497A CN 105239360 A CN105239360 A CN 105239360A
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- rosin
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Abstract
The invention discloses a rosin/polyurethane/polypropylene elastic composite sound absorbing cotton. The rosin/polyurethane/polypropylene elastic composite sound absorbing cotton is prepared from, by weight, 10 to 15 parts of thermoplastic polyurethane, 30 to 40 parts of polypropylene, 3 to 5 parts of rosin, 1 to 2 parts of liquid paraffin, 1 to 2 parts of hydroxyethyl cellulose, 3 to 5 parts of acetyl tributyl citrate, 3 to 5 parts of nano-montmorillonite, 0.5 to 1 part of calcium stearoyl lactylate, 0.1 to 0.2 part of anti-oxidant 1010, 0.3 to 0.5 part of sodium polyacrylate, and 10 to 15 parts of a modified silica gel solution. The rosin/polyurethane/polypropylene elastic composite sound absorbing cotton is capable of controlling absorbing on low and medium frequency noise effectively; sound absorption properties are excellent; mechanical properties are excellent; stability is high; the rosin/polyurethane/polypropylene elastic composite sound absorbing cotton possesses excellent toughness and softness, and is convenient for construction; and application range is wide.
Description
Technical field
The present invention relates to sound-absorbing material technical field, particularly relate to a kind of rosin/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.Meanwhile, sound-absorbing material should have good pliability, constructability, promotes its serviceability.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of rosin/polyurethane/polypropylene elastic composite acoustical cotton and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of rosin/polyurethane/polypropylene elastic composite acoustical cotton, it is obtained by the raw material of following weight parts:
Thermoplastic polyurethane 10-15, polypropylene 30-40, rosin 3-5, atoleine 1-2, hydroxyethylcellulose 1-2, tributyl 2-acetylcitrate 3-5, nano imvite 3-5, CSL 0.5-1, antioxidant 1010 0.1-0.2, Sodium Polyacrylate 0.3-0.5, 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 rosin/polyurethane/polypropylene elastic composite acoustical cotton, comprises the following steps:
(1) first by nano imvite, CSL, atoleine in 60-80 DEG C, 600-1000r/min mixing 10-15min, add tributyl 2-acetylcitrate, antioxidant 1010, rosin, 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 rosin/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 rosin 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, stability is high, and there is good toughness and flexibility, be easy to construction, have wide range of applications.
Detailed description of the invention
A kind of rosin/polyurethane/polypropylene elastic composite acoustical cotton, it is obtained by the raw material of following weight parts:
Thermoplastic polyurethane 10, polypropylene 30, rosin 3, atoleine 1, hydroxyethylcellulose 1, tributyl 2-acetylcitrate 3, nano imvite 3, CSL 0.5, antioxidant 1010 0.1, Sodium Polyacrylate 0.3, 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 rosin/polyurethane/polypropylene elastic composite acoustical cotton, comprises the following steps:
(1) first by nano imvite, CSL, atoleine in 60 DEG C, 600r/min mixing 10min, add tributyl 2-acetylcitrate, antioxidant 1010, rosin, 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 rosin/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 | 0.34 | 0.70 | 0.87 | 0.90 | 0.93 |
Claims (2)
1. rosin/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, rosin 3-5, atoleine 1-2, hydroxyethylcellulose 1-2, tributyl 2-acetylcitrate 3-5, nano imvite 3-5, CSL 0.5-1, antioxidant 1010 0.1-0.2, Sodium Polyacrylate 0.3-0.5, 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 rosin/polyurethane/polypropylene elastic composite acoustical cotton according to claim 1, is characterized in that, comprise the following steps:
(1) first by nano imvite, CSL, atoleine in 60-80 DEG C, 600-1000r/min mixing 10-15min, add tributyl 2-acetylcitrate, antioxidant 1010, rosin, 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 rosin/polyurethane/polypropylene elastic composite acoustical cotton after cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618497.8A CN105239360A (en) | 2015-09-24 | 2015-09-24 | Rosin/polyurethane/polypropylene elastic composite sound absorbing cotton, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618497.8A CN105239360A (en) | 2015-09-24 | 2015-09-24 | Rosin/polyurethane/polypropylene elastic composite sound absorbing cotton, and preparation method thereof |
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| CN105239360A true CN105239360A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510618497.8A Pending CN105239360A (en) | 2015-09-24 | 2015-09-24 | Rosin/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 |
|---|---|---|---|---|
| CN105986364A (en) * | 2016-01-26 | 2016-10-05 | 芜湖环瑞汽车内饰件有限公司 | High-tenacity high-weatherability sound absorbing cotton and preparation method thereof |
| CN114274621A (en) * | 2021-12-24 | 2022-04-05 | 湖北天运消音防振新材料有限公司 | High-filtration-grade melt-blown fabric bi-component cotton and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103757819A (en) * | 2013-11-25 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | High-density polyethylene sound-absorbing cotton and preparation method thereof |
| CN104357951A (en) * | 2014-10-15 | 2015-02-18 | 安徽颍元农业科技股份有限公司 | Cotton fiber for heat-insulating and sound-absorbing materials for buildings and producing method of cotton fiber |
| CN104562700A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Zirconia-polyurethane composite emulsion coated polypropylene nonwoven sound-absorbing material for automotive trim |
| 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 CN201510618497.8A patent/CN105239360A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757819A (en) * | 2013-11-25 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | High-density polyethylene sound-absorbing cotton and preparation method thereof |
| CN104357951A (en) * | 2014-10-15 | 2015-02-18 | 安徽颍元农业科技股份有限公司 | Cotton fiber for heat-insulating and sound-absorbing materials for buildings and producing method of cotton fiber |
| CN104562700A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Zirconia-polyurethane composite emulsion coated polypropylene nonwoven sound-absorbing material for automotive trim |
| 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 |
|---|---|---|---|---|
| CN105986364A (en) * | 2016-01-26 | 2016-10-05 | 芜湖环瑞汽车内饰件有限公司 | High-tenacity high-weatherability sound absorbing cotton and preparation method thereof |
| CN114274621A (en) * | 2021-12-24 | 2022-04-05 | 湖北天运消音防振新材料有限公司 | High-filtration-grade melt-blown fabric bi-component cotton and preparation method thereof |
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Application publication date: 20160113 |