CN102965843A - PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton and preparation method of PET fiber/teflon fiber composite sound absorbing cotton - Google Patents
PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton and preparation method of PET fiber/teflon fiber composite sound absorbing cotton Download PDFInfo
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- CN102965843A CN102965843A CN2012104781241A CN201210478124A CN102965843A CN 102965843 A CN102965843 A CN 102965843A CN 2012104781241 A CN2012104781241 A CN 2012104781241A CN 201210478124 A CN201210478124 A CN 201210478124A CN 102965843 A CN102965843 A CN 102965843A
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- 239000000835 fiber Substances 0.000 title claims abstract description 58
- 229920000742 Cotton Polymers 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims description 7
- 229920006303 teflon fiber Polymers 0.000 title abstract 4
- 239000002202 Polyethylene glycol Substances 0.000 title abstract 2
- 229920001223 polyethylene glycol Polymers 0.000 title abstract 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- 229920005669 high impact polystyrene Polymers 0.000 claims abstract description 7
- 239000004797 high-impact polystyrene Substances 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 claims abstract description 6
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims abstract description 4
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 4
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 4
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 claims abstract description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 4
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000008116 calcium stearate Substances 0.000 claims abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 16
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 235000006708 antioxidants Nutrition 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 235000010290 biphenyl Nutrition 0.000 claims description 2
- 239000004305 biphenyl Substances 0.000 claims description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 229920001155 polypropylene Polymers 0.000 abstract 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract 1
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 abstract 1
- 239000003508 Dilauryl thiodipropionate Substances 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 abstract 1
- 239000003995 emulsifying agent Substances 0.000 abstract 1
- 239000003063 flame retardant Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 229940057995 liquid paraffin Drugs 0.000 abstract 1
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NEHDRDVHPTWWFG-UHFFFAOYSA-N Dioctyl hexanedioate Chemical class CCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCC NEHDRDVHPTWWFG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Nonwoven Fabrics (AREA)
Abstract
The invention discloses PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton, which is prepared from the following ingredients in parts by weight: 70 to 80 parts of PET fibers, 40 to 50 parts of teflon fibers, 10 to 15 parts of emulsifying agents OP-30, 5 to 10 parts of peregal O-20, 80 to 100 parts of PP (propene polymer), 30 to 40 parts of HIPS (high impact polystyrene), 15 to 20 parts of activated clay, 10 to 15 parts of modified kieselguhr, 2 to 3 parts of stearic acid, 5 to 8 parts of dioctyl adipate, 4 to 6 parts of cresyl diphenyl phosphate, 2 to 3 parts of liquid paraffin, 1 to 2 parts of 3-aminopropyltrimethoxysilane, 2 to 3 parts of calcium stearate, 1 to 2 parts of barium stearate, 0.5 to 1.5 parts of anti-aging agents RD and 1 to 2 parts of antioxidants DLTP (dilauryl thiodipropionate). The sound absorbing cotton prepared by the invention has the advantages that the appearance evenness is good, the thickness is uniform, the hand feeling is soft, the product bonding degree is good, the tensile performance is high, the sound absorbing performance is excellent, the flame retardant effect is good, and the like.
Description
Technical field
The present invention relates to Nonwovens In Technology, be specifically related to a kind of PET fiber/polytetrafluoroethylene fibre composite sound-absorbing cotton and preparation method thereof.
Background technology
Noise is one of three large public hazards of modern society's contaminated environment, and noise directly affects people's healthy progress along with society, and people have proposed more and more higher requirement to the Noise Prevention and Treatment of contaminated environment.Acoustical cotton can be converted to the kinetic energy of the fine count fiber of acoustical cotton inside with the high-frequency noises vibrational energy that produces in the life, and changes into heat energy and disappear, and reaches the function of absorbing sound and lowering noise.Therefore acoustical cotton has good sound-absorbing, heat-insulation warm keeping performance, is widely used in vehicles interior trim fields such as construction material, automobiles.But existing acoustical cotton product with and manufacture method all have many deficiencies, main manifestations is: adopt original manually-operated, use the cutter buttress, productivity ratio is low; Do not carry out flame treatment; The product bond degree not, easily loose, tension intensity is poor etc.
Summary of the invention
The object of the invention provides the PET fiber that a kind of fire resistance is good, intensity is high and sound-absorbing effect is good/polytetrafluoroethylene fibre composite sound-absorbing cotton and preparation method thereof for the deficiencies in the prior art.
The technical solution used in the present invention is as follows:
A kind of PET fiber/polytetrafluoroethylene fibre composite sound-absorbing is cotton, is made by the raw material of following weight portion: PET fiber 70-80, polytetrafluoroethylene fibre 40-50, polyoxyethylene nonylphenol ether-30 10-15, paregal O-20 5-10, PP 80-100, HIPS30-40, atlapulgite 15-20, modification infusorial earth 10-15, stearic acid 2-3, dioctyl adipate 5-8, phosphate toluene diphenyl ester 4-6, atoleine 2-3,3-aminopropyl trimethoxysilane 1-2, calcium stearate 2-3, barium stearate 1-2, anti-aging agent RD 0.5-1.5, anti-oxidant DLTP 1-2.
Described modification infusorial earth is made by following method: dried diatomite is dropped in the ball mill, the graphite, the vermiculite power of 1-2%, the sepiolite powder of 2-3%, the precipitated calcium carbonate of 3-5%, the waterglass of 2-3% and the polyvinyl alcohol of 3-5% that add 20-30%, behind the ball milling 8-12h, at 1050-1150 ℃ of lower calcining 2-3h, pulverizing grinds to form 200-300 order powder and gets final product.
The preparation method of PET fiber/polytetrafluoroethylene fibre composite sound-absorbing cotton may further comprise the steps:
(1) PET fiber and polytetrafluoroethylene fibre adding cotton blender machine are mixed, for making fiber softening, reducing the friction between the fiber, prevent static, before later process, add polyoxyethylene nonylphenol ether-30, paregal O-20 uniform stirring with the cloud point shape, balance 20-24h, make fiber level and smooth, have good saturability, be convenient to combing;
(2) the mixed fiber of step (1) is delivered to be carded to the uniform fiber web of thickness in the carding machine, output speed 100-120m/min, output fiber net mass area ratio is 200-300g/m
2
(3) the remaining raw materials such as PP, HIPS, atlapulgite, modification infusorial earth, stearic acid, dioctyl adipate are sent into carried out even blend in the screw extruder, screw rod one district's temperature is controlled at 160-180 ℃, two district's temperature are controlled at 210-225 ℃, three district's temperature are controlled at 220-240 ℃, four district's temperature are controlled at 240-250 ℃, and five district's temperature are controlled at 245-260 ℃;
(4) the above-mentioned fused mass of extruding is dropped into behind fondant filter, measuring pump in the spray silk machine silk is sprayed on the fiber web two sides on the lapper, spray silk die head temperature is controlled at 240-250 ℃, receiving range is controlled at 25-30cm, the jet-stream wind that is heated by air heater when melting and spraying enters spray silk die head dynamic analysis of spinning is carried out slenderizing, the temperature of jet-stream wind is 150-165 ℃, and jet angle is controlled at 55-60 °;
(5) semi-finished product with cold wind cooling, roll extrusion typing cut into various required size specifications after embossing is processed, and namely get the acoustical cotton finished product.
Beneficial effect of the present invention:
The present invention makes voluminous powder by diatomite is carried out modification, can improve the sound-absorbing effect of acoustical cotton, the present invention is by adjusting and process modification prescription, added atlapulgite, acoustical cotton has been had certain strengthening action, the mechanical performances such as the tensile strength of raising acoustical cotton, shock resistance.The present invention adopts the melt-spraying spinning method, have that technique is simple, controllability good, production efficiency is high, and industrializing implementation is easy, can guarantee the characteristics such as stable and reliable product quality, prepared acoustical cotton has that the smooth appearance degree is good, even thickness, soft, the advantages such as the product bond degree is good, tensile property is strong, sound absorption qualities is good, good flame retardation effect.
The specific embodiment
A kind of PET fiber/polytetrafluoroethylene fibre composite sound-absorbing is cotton, is made by the raw material of following weight portion: 78 parts of PET fibers, 42 parts of polytetrafluoroethylene fibres, polyoxyethylene nonylphenol ether-30 14 part, paregal O-20 8 part, 35 parts of 85 parts of PP, HIPS, 16 parts of atlapulgites, 15 parts of modification infusorial earths, 2.5 parts of stearic acid, 6 parts of dioctyl adipates, 5 parts of phosphate toluene diphenyl esters, 2 parts of atoleines, 1.5 parts of 3-aminopropyl trimethoxysilane, 2 parts of calcium stearates, 1.5 parts of barium stearates, 0.8 part of anti-aging agent RD, 1.5 parts of anti-oxidant DLTPs.
Wherein, described modification infusorial earth is made by following method: dried diatomite is dropped in the ball mill, add 28% graphite, 2% vermiculite power, 3% sepiolite powder, 4% precipitated calcium carbonate, 2.5% waterglass and 4% polyvinyl alcohol, behind the ball milling 10h, at 1150 ℃ of lower calcining 2h, pulverizing grinds to form 300 order powder and gets final product.
The preparation method of PET fiber/polytetrafluoroethylene fibre composite sound-absorbing cotton may further comprise the steps:
(1) PET fiber and polytetrafluoroethylene fibre adding cotton blender machine are mixed, for making fiber softening, reducing the friction between the fiber, prevent static, before later process, add polyoxyethylene nonylphenol ether-30, paregal O-20 uniform stirring with the cloud point shape, balance 22h, make fiber level and smooth, have good saturability, be convenient to combing;
(2) the mixed fiber of step (1) is delivered to be carded to the uniform fiber web of thickness in the carding machine, output speed 105m/min, output fiber net mass area ratio is 250g/m
2
(3) the remaining raw materials such as PP, HIPS, atlapulgite, modification infusorial earth, stearic acid, dioctyl adipate are sent into carried out even blend in the screw extruder, screw rod one district's temperature is controlled at 165 ℃, two district's temperature are controlled at 220 ℃, three district's temperature are controlled at 235 ℃, four district's temperature are controlled at 240 ℃, and five district's temperature are controlled at 250 ℃;
(4) the above-mentioned fused mass of extruding is dropped into behind fondant filter, measuring pump in the spray silk machine silk is sprayed on the fiber web two sides on the lapper, spray silk die head temperature is controlled at 245 ℃, receiving range is controlled at 25cm, the jet-stream wind that is heated by air heater when melting and spraying enters spray silk die head dynamic analysis of spinning is carried out slenderizing, the temperature of jet-stream wind is 160 ℃, jet velocity is 2400m/min, and jet angle is controlled at 57 °;
(5) semi-finished product with cold wind cooling, roll extrusion typing cut into various required size specifications after embossing is processed, and namely get the acoustical cotton finished product.
After tested, the distribution of fiber diameters of resulting materials is 1.6-1.8 μ m, and tearing strength is 548N/m, and the coefficient of heat conduction is 5.512W/ (m
2℃), oxygen index (OI) is 43%, noise reduction coefficient is 0.81.
Claims (3)
1. PET fiber/polytetrafluoroethylene fibre composite sound-absorbing is cotton, it is characterized in that, made by the raw material of following weight portion: PET fiber 70-80, polytetrafluoroethylene fibre 40-50, polyoxyethylene nonylphenol ether-30 10-15, paregal O-20 5-10, PP 80-100, HIPS 30-40, atlapulgite 15-20, modification infusorial earth 10-15, stearic acid 2-3, dioctyl adipate 5-8, phosphate toluene diphenyl ester 4-6, atoleine 2-3,3-aminopropyl trimethoxysilane 1-2, calcium stearate 2-3, barium stearate 1-2, anti-aging agent RD 0.5-1.5, anti-oxidant DLTP 1-2.
2. PET fiber according to claim 1/polytetrafluoroethylene fibre composite sound-absorbing is cotton, it is characterized in that, described modification infusorial earth is made by following method: dried diatomite is dropped in the ball mill, the graphite, the vermiculite power of 1-2%, the sepiolite powder of 2-3%, the precipitated calcium carbonate of 3-5%, the waterglass of 2-3% and the polyvinyl alcohol of 3-5% that add 20-30%, behind the ball milling 8-12h, at 1050-1150 ℃ of lower calcining 2-3h, pulverizing grinds to form 200-300 order powder and gets final product.
3. the preparation method of PET fiber as claimed in claim 1/polytetrafluoroethylene fibre composite sound-absorbing cotton is characterized in that may further comprise the steps:
(1) PET fiber and polytetrafluoroethylene fibre adding cotton blender machine are mixed, for making fiber softening, reducing the friction between the fiber, prevent static, before later process, add polyoxyethylene nonylphenol ether-30, paregal O-20 uniform stirring with the cloud point shape, balance 20-24h, make fiber level and smooth, have good saturability, be convenient to combing;
(2) the mixed fiber of step (1) is delivered to be carded to the uniform fiber web of thickness in the carding machine, output speed 100-120m/min, output fiber net mass area ratio is 200-300g/m
2
(3) the remaining raw materials such as PP, HIPS, atlapulgite, modification infusorial earth, stearic acid, dioctyl adipate are sent into carried out even blend in the screw extruder, screw rod one district's temperature is controlled at 160-180 ℃, two district's temperature are controlled at 210-225 ℃, three district's temperature are controlled at 220-240 ℃, four district's temperature are controlled at 240-250 ℃, and five district's temperature are controlled at 245-260 ℃;
(4) the above-mentioned fused mass of extruding is dropped into behind fondant filter, measuring pump in the spray silk machine silk is sprayed on the fiber web two sides on the lapper, spray silk die head temperature is controlled at 240-250 ℃, receiving range is controlled at 25-30cm, the jet-stream wind that is heated by air heater when melting and spraying enters spray silk die head dynamic analysis of spinning is carried out slenderizing, the temperature of jet-stream wind is 150-165 ℃, and jet angle is controlled at 55-60 °;
(5) semi-finished product with cold wind cooling, roll extrusion typing cut into various required size specifications after embossing is processed, and namely get the acoustical cotton finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104781241A CN102965843A (en) | 2012-11-22 | 2012-11-22 | PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton and preparation method of PET fiber/teflon fiber composite sound absorbing cotton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104781241A CN102965843A (en) | 2012-11-22 | 2012-11-22 | PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton and preparation method of PET fiber/teflon fiber composite sound absorbing cotton |
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| Publication Number | Publication Date |
|---|---|
| CN102965843A true CN102965843A (en) | 2013-03-13 |
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|---|---|---|---|
| CN2012104781241A Pending CN102965843A (en) | 2012-11-22 | 2012-11-22 | PET (polyethylene glycol terephthalate) fiber/teflon fiber composite sound absorbing cotton and preparation method of PET fiber/teflon fiber composite sound absorbing cotton |
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| CN (1) | CN102965843A (en) |
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| CN103696138A (en) * | 2013-11-26 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Insulated non-woven fabric sound-absorbing cotton and preparation method thereof |
| CN103696131A (en) * | 2013-11-25 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Flame-retardant sound-absorbing cotton and preparation method thereof |
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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 |
| CN103757821A (en) * | 2013-11-27 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | Nano pearl powder modified isotactic polypropylene non-woven fabric and preparation method thereof |
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