CN103570247B - A kind of centrifuging super glass wool and its preparation method - Google Patents
A kind of centrifuging super glass wool and its preparation method Download PDFInfo
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- CN103570247B CN103570247B CN201210259367.6A CN201210259367A CN103570247B CN 103570247 B CN103570247 B CN 103570247B CN 201210259367 A CN201210259367 A CN 201210259367A CN 103570247 B CN103570247 B CN 103570247B
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- glass wool
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- 239000011491 glass wool Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 16
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 15
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 15
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000009987 spinning Methods 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 239000006063 cullet Substances 0.000 claims description 9
- 239000006004 Quartz sand Substances 0.000 claims description 8
- 229910021538 borax Inorganic materials 0.000 claims description 8
- 239000010433 feldspar Substances 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 235000017550 sodium carbonate Nutrition 0.000 claims description 8
- 239000004328 sodium tetraborate Substances 0.000 claims description 8
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 8
- 229920000742 Cotton Polymers 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 206010016654 Fibrosis Diseases 0.000 abstract 1
- 210000002950 fibroblast Anatomy 0.000 abstract 1
- 230000004761 fibrosis Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Landscapes
- Glass Compositions (AREA)
Abstract
The present invention discloses a kind of centrifuging super glass wool, and this glass wool composition (mass percentage) is: 63.0��66.5%SiO2, 1.4��3.0%Al2O3, 5.5��7.5%CaO, 1.5��3.0%MgO, 0.4��1.3%K2O, 14.2��16.0%Na2O, 5.5��7.6%B2O3. Wherein Al2O3Content is 1.4��3.0%, can reduce the analysis crystalline substance tendency of glass metal, make fiber pliable and tough, impulse-free robustness and fracture; B2O3Content is 5.5��7.6%, can at the low glass metal viscosity of fibroblast temperature decrease of 1050 �� 10 DEG C, the easy refinement of fiber. Microglass fiber diameter 90% of the present invention is in normal distribution at 2��4 ��m, and staple length 92% is that normal distribution is at 2��3cm. The invention also discloses the preparation method of above-mentioned super glass wool, choose the satisfactory raw material of composition, raw material is dropped into kiln and is melting into transparent glass metal. Glass metal is imported spinning head, with the obtained super glass wool of the flow fibrosis of each spinning head 76 �� 2kg/h. Super glass wool thermal conductivity of the present invention is low, and layering is even, and sound-absorption and heat-insulation performance is good. This kind of material can make the cotton felt of the sound insulation and noise reduction in the plate of aircraft cabin, body of wall and the cotton felt of roofing sound-insulating and heat-insulating, warming plate and other sound-absorption and heat-insulation product.
Description
Technical field
The present invention relates to glass wool field, it is specifically related to a kind of centrifuging super glass wool field.
Background technology
Centrifuging glass wool coordinates other raw material high-temperature fusion to become glass metal dull and stereotyped for recovery glass cullet, and glass metal throws away a fiber in the centrifugal pan of high speed rotating, then becomes, through thermal-flame two drawing-offs, the inorganic cotton-like fiber that diameter is 1��8 ��m. Mutually intersecting due to microglass fiber and have certain elasticity, glass wool inside forms a lot of independent hole, and independent hole makes the approach of heat and transmission sound greatly increase, and therefore glass wool has the effect of sound-absorption and heat-insulation. Glass wool is widely used in the fields such as building sound insulation, wall thermal insulating, petrochemical pipe insulation and store battery glass fibre adsorptivity dividing plate. But, some special dimension is as very high to the performance requriements of glass wool in the sound-insulating and heat-insulating of aircraft, large-sized multifunction music hall, such as require that glass wool thermal conductivity and unit weight are enough low, cotton fibre is soft, impulse-free robustness and fracture, Fibre diameter and discrete length degree are little, and glass wool layered effect is good. But, the super glass wool performance that prior art is produced generally does not reach such requirement.
Chinese patent 101811824A (publication date is on August 25th, 2010) discloses the production method of a kind of super glass wool, and the glass wool that the method is produced consists of SiO264.5��66%, Al2O3With Fe2O3Sum is 2.6��2.9%, B2O3To be 4.8��5%, CaO and MgO sums be 10.6��11%, Na2O and K2O sum is 15.8��16%, it may also be useful to the method can produce the super glass wool that diameter is 2��5 ��m, but the weak point of the method is due to B2O3Content is lower, and fiber is difficult to refinement, requires very high to processing condition, and easily jagged, easy fracture, softness, and the super glass wool diameter produced not and discrete length degree are big for cotton fibre, can not present normal distribution. This just directly results in the requirement that this glass wool sound-absorption and heat-insulation performance cannot meet special dimension.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, the centrifuging super glass wool formula of a kind of improvement is provided, this glass wool formula is easy to make cotton fibre refinement, softness, impulse-free robustness and fracture, fiber fractionation is even, and Fibre diameter 90% is, and normal distribution is in 2��4 �� m, staple length 85% within the scope of 2��3cm, thus makes super glass wool excellent performance in normal distribution, can meet the requirement of special dimension sound-absorption and heat-insulation.
Another technical problem that the present invention to be solved is to provide the preparation method of a kind of above-mentioned super glass wool, comprises the step of following order:
(1) every 1000kg raw material is selected and is reclaimed dull and stereotyped glass cullet 230��270kg, quartz sand 250��290kg, feldspar 110��140kg, Wingdale 14��30kg, rhombspar 50��80kg, soda ash 95��110kg, BORAX PENTAHYDRATE-99.9 MIN 120��140kg;
The dull and stereotyped glass cullet of the recovery wherein chosen require that main component content is as follows: 72%��SiO2�� 73%, 8%��CaO��9%, 4%��MgO��5%, 14%��Na2O+K2O��15%;
The quartz sand wherein chosen requires that main component content is as follows: 97.5%��SiO2�� 99%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 0.9%��Al2O3�� 1.0%;
The feldspar wherein chosen requires that main component content is as follows: 70.0%��SiO2�� 71.0%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 16.0%��Al2O3�� 18.0%;
The limestone requirement main component content wherein chosen is as follows: 55.0%��CaO��56.5%, 0.8%��MgO��1.0%;
The rhombspar wherein chosen requires that main component content is as follows: 30.5%��CaO��32.0%, 20.0%��MgO��22.0%;
The soda ash wherein chosen requires that main component content is as follows: 55.0%��Na2O��56.5%;
The BORAX PENTAHYDRATE-99.9 MIN wherein chosen requires that main component content is as follows: 21.0%��Na2O��22.5%, 48.0%��B2O3�� 49.0%;
(2) after raw material Homogeneous phase mixing, kiln will be dropped into, it is melting into the glass metal of homogeneous transparent;
(3) glass metal is imported spinning head from bushing, with the obtained centrifuging super glass wool of the flow of each spinning head 76 �� 2kg/h.
Embodiment
Below in conjunction with specific examples, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application's claims and is limited by those skilled in the art.
Embodiment 1
(1) every 1000kg raw material is selected and is reclaimed dull and stereotyped glass cullet 242kg, quartz sand 276kg, feldspar 127kg, Wingdale 16kg, rhombspar 59kg, soda ash 106kg, BORAX PENTAHYDRATE-99.9 MIN 131kg;
The dull and stereotyped glass cullet of the recovery wherein chosen require that main component content is as follows: 72%��SiO2�� 73%, 8%��CaO��9%, 4%��MgO��5%, 14%��Na2O+K2O��15%;
The quartz sand wherein chosen requires that main component content is as follows: 97.5%��SiO2�� 99%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 0.9%��Al2O3�� 1.0%.
The feldspar wherein chosen requires that main component content is as follows: 70.0%��SiO2�� 71.0%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 16.0%��Al2O3�� 18.0%.
The limestone requirement main component content wherein chosen is as follows: 55.0%��CaO��56.5%, 0.8%��MgO��1.0%.
The rhombspar wherein chosen requires that main component content is as follows: 30.5%��CaO��32.0%, 20.0%��MgO��22.0%.
The soda ash wherein chosen requires that main component content is as follows: 55.0%��Na2O��56.5%.
The BORAX PENTAHYDRATE-99.9 MIN wherein chosen requires that main component content is as follows: 21.0%��Na2O��22.5%, 48.0%��B2O3�� 49.0%.
(2) after raw material Homogeneous phase mixing, kiln will be dropped into, it is melting into the glass metal of homogeneous transparent.
(3) glass metal is imported spinning head from bushing, with the obtained centrifuging super glass wool of the low flow of each spinning head 76 �� 2kg/h.
Embodiment 2
(1) every 1000kg raw material is selected and is reclaimed dull and stereotyped glass cullet 248kg, quartz sand 270kg, feldspar 120kg, Wingdale 15kg, rhombspar 60kg, soda ash 108, BORAX PENTAHYDRATE-99.9 MIN 133kg;
The dull and stereotyped glass cullet of the recovery wherein chosen require that main component content is as follows: 72%��SiO2�� 73%, 8%��CaO��9%, 4%��MgO��5%, 14%��Na2O+K2O��15%;
The quartz sand wherein chosen requires that main component content is as follows: 97.5%��SiO2�� 99%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 0.9%��Al2O3�� 1.0%.
The feldspar wherein chosen requires that main component content is as follows: 70.0%��SiO2�� 71.0%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 16.0%��Al2O3�� 18.0%.
The limestone requirement main component content wherein chosen is as follows: 55.0%��CaO��56.5%, 0.8%��MgO��1.0%.
The rhombspar wherein chosen requires that main component content is as follows: 30.5%��CaO��32.0%, 20.0%��MgO��22.0%.
The soda ash wherein chosen requires that main component content is as follows: 55.0%��Na2O��56.5%.
The BORAX PENTAHYDRATE-99.9 MIN wherein chosen requires that main component content is as follows: 21.0%��Na2O��22.5%, 48.0%��B2O3�� 49.0%.
(2) after raw material Homogeneous phase mixing, kiln will be dropped into, it is melting into the glass metal of homogeneous transparent.
(3) glass metal is imported spinning head from bushing, with the obtained centrifuging super glass wool of the low flow of each spinning head 76 �� 2kg/h.
Above are only the single embodiment of the present invention, but the design of the present invention design is not limited thereto, all changes utilizing this design that the present invention carries out unsubstantiality, all should belong to the behavior invading the scope of protection of the invention. In every case being the content not departing from technical solution of the present invention, any type of simple modification, equivalent variations and the remodeling above embodiment done according to the technical spirit of the present invention, still belongs to the protection domain of technical solution of the present invention.
Claims (1)
1. a centrifuging super glass wool, it is characterized in that described microglass fiber diameter 90% is that normal distribution is in 2��4 �� m, microglass fiber length 85% is that normal distribution is within the scope of 2��3cm, fiber is pliable and tough, impulse-free robustness and fracture, and its composition mass percentage is: 63.0��66.5%SiO2, 1.4��3.0%Al2O3, 5.5��7.5%CaO, 1.5��3.0%MgO, 0.4��1.3%K2O, 14.2��16.0%Na2O, 5.5��7.6%B2O3; Preparing this centrifuging super glass wool, its method is:
(1) every 1000Kg raw material is selected and is reclaimed dull and stereotyped glass cullet 230��270Kg, quartz sand 250��290Kg, feldspar 110��140Kg, Wingdale 14��30Kg, rhombspar 50��80Kg, soda ash 95��110Kg, BORAX PENTAHYDRATE-99.9 MIN 120��140Kg;
The dull and stereotyped glass cullet of the recovery wherein chosen require main component content: 72%��SiO2�� 73%, 8%��CaO��9%, 4%��MgO��5%, 14%��Na2O+K2O��15%;
The quartz sand wherein chosen requires main component content: 97.5%��SiO2�� 99%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 0.9%��Al2O3�� 1.0%;
The feldspar wherein chosen requires main component content: 70.0%��SiO2�� 71.0%, 0.8%��CaO��1.0%, 0.9%��MgO��1.0%, 16.0%��Al2O3�� 18.0%;
The limestone requirement main component content wherein chosen: 55.0%��CaO��56.5%, 0.8%��MgO��1.0%;
The rhombspar wherein chosen requires main component content: 30.5%��CaO��32.0%, 20.0%��MgO��22.0%;
The soda ash wherein chosen requires main component content: 55.0%��Na2O��56.5%;
The BORAX PENTAHYDRATE-99.9 MIN wherein chosen requires main component content: 21.0%��Na2O��22.5%, 48.0%��B2O3�� 49.0%;
(2) after raw material Homogeneous phase mixing, kiln will be dropped into, it is melting into the glass metal of homogeneous transparent;
(3) glass metal is imported spinning head from bushing, with the obtained centrifuging super glass wool of the flow of each spinning head 76 �� 2Kg/h.
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| CN103570247B true CN103570247B (en) | 2016-06-08 |
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| CN111285610B (en) * | 2020-02-18 | 2021-04-06 | 紫罗兰家纺科技股份有限公司 | Ultra-fine glass wool based on standing wave treatment and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093066A (en) * | 1989-08-11 | 1994-10-05 | 伊索福圣戈班公司 | Heat insulation and/or the sound insulation goods that contain the glass fibre that in Physiological Medium, decomposes |
| WO1998057901A1 (en) * | 1997-06-17 | 1998-12-23 | Johns Manville International, Inc. | Glass compositions for high thermal insulation efficiency glass fibers |
| CN101857394A (en) * | 2010-05-11 | 2010-10-13 | 太仓宏大方圆电气有限公司 | Production method of superfine glass wool product |
| CN102399056A (en) * | 2011-05-24 | 2012-04-04 | 苏州维艾普新材料有限公司 | Production method for ultrafine ultralight glass heat insulation wool |
-
2012
- 2012-07-24 CN CN201210259367.6A patent/CN103570247B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093066A (en) * | 1989-08-11 | 1994-10-05 | 伊索福圣戈班公司 | Heat insulation and/or the sound insulation goods that contain the glass fibre that in Physiological Medium, decomposes |
| WO1998057901A1 (en) * | 1997-06-17 | 1998-12-23 | Johns Manville International, Inc. | Glass compositions for high thermal insulation efficiency glass fibers |
| CN101857394A (en) * | 2010-05-11 | 2010-10-13 | 太仓宏大方圆电气有限公司 | Production method of superfine glass wool product |
| CN102399056A (en) * | 2011-05-24 | 2012-04-04 | 苏州维艾普新材料有限公司 | Production method for ultrafine ultralight glass heat insulation wool |
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