CN104788016A - Preparation method of light glass fiber cotton felt for sound insulation and thermal insulation - Google Patents
Preparation method of light glass fiber cotton felt for sound insulation and thermal insulation Download PDFInfo
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- CN104788016A CN104788016A CN201510163561.8A CN201510163561A CN104788016A CN 104788016 A CN104788016 A CN 104788016A CN 201510163561 A CN201510163561 A CN 201510163561A CN 104788016 A CN104788016 A CN 104788016A
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- glass
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- cotton felt
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Abstract
The invention relates to a drawing method of glass fiber cotton felt, in particular to a preparation method of light glass fiber cotton felt for sound insulation and thermal insulation. At present, diameters of domestic centrifugal glass fibers are generally larger than 7 mu m and more slag ball impurities are contained. The smaller the fiber diameters are, the lower the thermal conductivity of centrifugal glass fiber products is, the higher the strength is and the better the product quality is, so that reduction of the diameters of the centrifugal glass fibers is of great importance. A glass raw material is molten into molten glass in a kiln at the temperature of 1300 DEG C-1700 DEG C, the molten glass flows into a centrifugal disc rotating at the high speed in a molten glass stream form after clarified and homogenized by a material channel at the temperature of 1100 DEG C-1300 DEG C, the molten glass is firstly drawn by high-speed and high-temperature vertical airstreams at the temperature of 1000 DEG C-1400 DEG C to form glassy-state fibers and then treated by cold airstreams at the low temperature of 5-30 DEG C to form centrifugal glass fibers with the diameters ranging from 1 mu m to 4 mu m, the preparation process controllability is good, the fibers are stable in diameter and free of slag ball impurities, the 1/3 frequency multiplication sound insulation performance of the glass cotton felt is as follows: the 1000 Hz sound loss is higher than or equal to 8 dB, and the thermal insulation performance is as follows: the thermal conductivity is in a range of 0.025-0.04 W/(m*K).
Description
Technical field
The present invention relates to a kind of preparation method of glass fibre cotton felt, especially relate to the preparation method of the heat insulation glass fibre cotton felt of a kind of light sound-proof.
Background technology
Centrifugal glass fibre refers to the industrial chemicals melting that mixes according to a certain ratio and after bushing drainage, by the glass fibre of centrifugal blast technique wire-drawing shape.High-temp liquid is after centrifugal blast technique wire drawing fibroblast, Fibre diameter is thin, internal fiber is fluffy staggered, and there is a large amount of micro-pores, have that thermal conductivity is low, sound absorbing capabilities good, coefficient of elasticity high, be widely used in electromechanics, metallurgy, oil, chemical industry, building and aerospace field.
US Patent No. 3696904 just proposed the method manufacturing fiber with centrifugation as far back as 1972.
Chinese patent CN103130410A discloses the fibroflocculent production method of a kind of centrifugally glass-wool.Centrifugally glass-wool described in this invention through selecting materials, prepare burden, send stove melting, centrifugal fibroblast obtains glass wool.
Chinese patent CN1087610A discloses the method and apparatus that a kind of mineral wool is produced and the mineral wool produced thus.Mineral wool described in this invention feeds the small hole injection of sedimentator melt on sedimentator peripheral wall by high-temperature fusant and be drawn as fiber in blast of hot air stream.
US Patent No. 2005/0086977A1 discloses producing apparatus of a kind of glass fibre and preparation method thereof.Glass fibre described in this invention prepares the centrifugal glass fibre of diameter 6.5 μm ~ 7.5 μm through raw materials melt high temp glass liquid, material road homogenizing, bushing drainage, centrifugal pan centrifugal drawing, burner secondary wire drawing fiber-forming process.
Document Platinum/rhodium Alloy Bushing for Drawing Glass Fibers in Centrifugal-spinneret-blowProcess (Precious Metals, 33 (2012) 66-70) propose, prepare in fiber process at centrifugal blast high temp glass liquid, sedimentator drawing process parameter plays a decisive role for the performance of centrifugal glass fibre quality and fibre product thereof.Centrifugal glass fibre diameter domestic at present generally more than 7 μm, and contains more slag ball impurity.Fibre diameter is thinner, and centrifugal glass fibre goods thermal conductivity is lower, and intensity is higher, and quality product is better, and therefore the refinement of centrifugal glass fibre diameter is most important.
Summary of the invention
Object of the present invention is intended to overcome the deficiencies in the prior art, provide the preparation method of the heat insulation glass fibre cotton felt of a kind of light sound-proof, it is thick that the method effectively can overcome centrifugal glass fibre diameter in prior art, the shortcomings such as slag ball foreign matter content is high, and can stable fibers production technique, in the glass fibre cotton felt produced, glass fiber diameter is low to moderate 1 ~ 4 μm, and fiber is normal distribution; Glass fiber blanket layer thickness is 10 ~ 100 μm, and unit weight is 5 ~ 12kg/m
3, binder content is 10% ~ 20%, and cotton felt incendivity is that A level is not fired; Glass fiber blanket hydrophobic nature>=98.5%, 80 DEG C of pyroprocessing are without destruction or bad smell release; Sound transmisson loss>=the 8dB of glass fiber blanket 1/3 octave component sound-proofing properties: 1000Hz, heat-proof quality: thermal conductivity is 0.025 ~ 0.04W/ (mK).
The technical scheme adopted for realizing object of the present invention is: the drawing process of a kind of lightweight normal distribution beta glass fibre cotton of the present invention, it is characterized in that frit is melt into glass metal in the kiln of 1300 DEG C ~ 1700 DEG C, glass metal is after 1100 ~ 1300 DEG CLiao road clarification and homogenization, flow in the centrifugal pan of high speed rotating with glass metal stream stock form, first form vitreous state fiber through 1000 DEG C ~ 1400 DEG C high-speed and high-temperature uprush wire drawings, 1 ~ 4 μm of centrifugal glass fibre is formed again through 5 ~ 30 DEG C of cold air stream subzero treatment, after spraying urea and cyanurotriamide modified phenolic resin adhesive, just the heat insulation glass fibre cotton felt of light sound-proof is formed through overcuring.
The present invention is to provide the preparation of the cotton felt of a kind of diameter 1 ~ 4 μm of centrifugal glass fibre, comprise following sequential steps:
(1) in kiln, molten component is SiO
260% ~ 66%, Al
2o
31% ~ 3.5%, CaO 4% ~ 10%, MgO 1% ~ 5%, K
2o 0.5% ~ 2%, Na
2o 15% ~ 18%, B
2o
34.5% ~ 9%, and CaO and MgO sum is 8% ~ 12%, K
2o and Na
2o sum is less than 17%, and melt temperature is 1300 DEG C ~ 1700 DEG C;
(2) above-mentioned glass metal is after the clarification and homogenization of 1100 ~ 1300 DEG C, punishment in advance road, flows out to flow burst form, and stream plume amount is 40kg/h ~ 280kg/h, and stream stock tip temperature is 1150 DEG C ~ 1000 DEG C;
(3) above-mentioned glass metal stream plume enters in the centrifugal pan of high speed rotating, centrifugal pan diameter is 50mm ~ 400mm, sidewall hole count is 2000 holes, hole ~ 16000, sidewall aperture is 0.4mm ~ 0.8mm, centrifugal pan temperature is 850 DEG C ~ 1000 DEG C, glass metal is gone out by sidewall hole centrifugal drying with the speed of 2400md/min ~ 3000rad/min by centrifugal pan, and now glass metal viscosity controller is 10
4pas ~ 10
5.5pas;
(4) the above-mentioned glass metal thrown away of high-speed and high-temperature uprush wire drawing is adopted, top gas flow temperature is 1000 DEG C ~ 1400 DEG C, and top gas velocity is 150m/s ~ 300m/s, carries after high-octane air-flow and glass metal meet, carry out energy exchange, make glass metal viscosity drop be low to moderate 10
18pas ~ 10
35pas;
(5) above-mentioned viscosity 10
1.8pas ~ 10
3.5the glass metal of pas, by high-speed and high-temperature air-flow stretched vertically, reaches glass melt always and softens viscosity 10
7.6pas, changes vitreous state fiber into.
(6) adopt the above-mentioned vitreous state fiber of cold air stream subzero treatment, gas flow temperature is 5 ~ 30 DEG C, and flow is 0.1 ~ 1.0Nm
3/ h, vitreous state fiber is not owing to reaching fragility solid state, and under cold air stream drawing-off, complete refinement setting, forms 1 ~ 4 μm of centrifugal glass fibre.
(7) ratio of the glass fibre cotton of formation evenly being sprayed Urea Urea, trimeric cyanamide, phenol and formaldehyde is: 1: (0.2 ~ 0.5): (2 ~ 3.1): the phenolic resin adhesive of (5 ~ 7.2).
(8) will spray the cotton felt having sizing agent, sending into curing oven, is under the condition of 180 ~ 210 DEG C in temperature, solidification 3 ~ 15min.
Effect: the present invention compared with prior art, has the following advantages:
(1) process controllability is good, steady quality, without slag ball impurity;
(2) centrifugal glass fibre diameter reaches 1 ~ 4 μm, fiber bending intensity and toughness high, fibrefelt thermal conductivity is low, high-temperature heat insulation excellent performance.
Accompanying drawing explanation
Fig. 1 is the photo of diameter of the present invention 1 ~ 4 μm of centrifugal glass fibre cotton.
Fig. 2 is the stereoscan photograph of diameter of the present invention 1 ~ 4 μm of centrifugal glass fibre cotton.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
Embodiment 1
By dull and stereotyped for raw material glass cullet 600kg, feldspar 60kg, soda ash 25kg, rhombspar 60kg, after calcite 10kg, BORAX PENTAHYDRATE-99.9 MIN 150kg mixing, homogenizing, add melting in 1450 DEG C of kilns, obtain high temp glass liquid, glass metal composition is: SiO
262.5%, Al
2o
33.2%, CaO6.21%, MgO2.16%, K
2o1.2%, Na
2o15.3%, B
2o
37.42%.High temp glass liquid is after the clarification and homogenization of 1150 DEG C, punishment in advance road, and flow in the centrifugal pan of high speed rotating to flow burst form, stream plume amount is 210kg/h, stream stock tip temperature is 1080 DEG C, and centrifugal pan diameter is 300mm, and sidewall hole count is 9800 holes, sidewall aperture is 0.7mm, and centrifugal pan temperature is 890 DEG C.Glass metal is gone out by sidewall hole centrifugal drying with the speed of 2600rad/min by centrifugal pan, and now glass metal viscosity controller is 10
5pas.Adopt high-speed and high-temperature uprush wire drawing glass metal, carry after high-octane air-flow and glass metal meet, carrying out energy exchange top gas flow temperature is 1300 DEG C, and top gas velocity is 240m/s, make glass metal viscosity drop be low to moderate 10
2pas, glass metal is by the refinement of high-speed and high-temperature air-flow stretched vertically simultaneously, and viscosity is by 10
2pas rises to glass melt and softens viscosity 10
7.6pas, changes vitreous state fiber into.Cold air stream subzero treatment vitreous state fiber, make the complete refinement setting of vitreous state fiber, cold air stream temperature is 25 DEG C, and flow is 0.6Nm
3/ h, form 1 ~ 4 μm of centrifugal glass fibre, average fibre diameter is 3.4 μm, the ratio that the glass fibre cotton formed evenly sprays Urea Urea, trimeric cyanamide, phenol and formaldehyde is: after the phenolic resin adhesive of 1: 0.2: 2: 5, then by cotton felt, sends into curing oven, be under the condition of 180 DEG C in temperature, solidification 15min, now glue content is 19%, and hydrophobicity performance reaches 98.7%.
Embodiment 2
By dull and stereotyped for raw material glass cullet 220kg, quartz sand 340kg, feldspar 60kg, soda ash 70kg, rhombspar 70kg, after calcite 8kg, BORAX PENTAHYDRATE-99.9 MIN 160kg mixing, homogenizing, add melting in 1490 DEG C of kilns, obtain high temp glass liquid, glass metal composition is: SiO
266.5%, Al
2o
31.7%, CaO 6.45%, MgO, 2.86%, K
2o 0.76%, Na
2o 15.6%, B
2o
37.82%.High temp glass liquid is after the clarification and homogenization of 1180 DEG C, punishment in advance road, flow in the centrifugal pan of high speed rotating to flow stock form, stream plume amount is 160kg/h, stream stock tip temperature is 1090 DEG C, centrifugal pan diameter is 200mm, sidewall hole count is 7600 holes, and sidewall aperture is 0.65mm, and centrifugal pan temperature is 870 DEG C.Glass metal is gone out by sidewall hole centrifugal drying with the speed of 2800rad/min by centrifugal pan, and now glass metal viscosity controller is 10
4.5pas.Adopt high-speed and high-temperature uprush wire drawing glass metal, carry after high-octane air-flow and glass metal meet, carrying out energy exchange top gas flow temperature is 1250 DEG C, and top gas velocity is 250m/s, make glass metal viscosity drop be low to moderate 10
2.5pas, glass metal is by the refinement of high-speed and high-temperature air-flow stretched vertically simultaneously, and viscosity is by 10
35pas rises to glass melt and softens viscosity 10
7.6pas, changes vitreous state fiber into.Cold air stream subzero treatment vitreous state fiber, make the complete refinement setting of vitreous state fiber, cold air stream temperature is 20 DEG C, and flow is 0.4Nm
3/ h, form 1 ~ 4 μm of centrifugal glass fibre, average fibre diameter is 2.8 μm, the ratio that the glass fibre cotton formed evenly sprays Urea Urea, trimeric cyanamide, phenol and formaldehyde is: the phenolic resin adhesive of 1: 0.5: 3.1: 7.2, cotton is sent into curing oven, is under the condition of 210 DEG C in temperature, solidification 3min, now glue content is 15%, and hydrophobicity performance reaches 99.5%.
Below be only in conjunction with specific embodiments, 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 those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims and limited.
Claims (9)
1. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof, it is characterized in that clarifying the melten glass liquid after homogenizing with low discharge stream stock form flow in the centrifugal pan of high speed rotating centrifugal throw away after, first form vitreous state fiber through the wire drawing of high-speed and high-temperature uprush, 1 ~ 4 μm of centrifugal glass fibre cotton is formed again through cold air stream subzero treatment, after spraying urea and cyanurotriamide modified phenolic resin adhesive, just form the heat insulation glass fibre cotton felt of light sound-proof through overcuring.
2. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, is characterized in that melten glass liquid component prescription is: SiO
260% ~ 66%, Al
2o
31% ~ 3.5%, CaO4% ~ 10%, MgO1% ~ 5%, K
2o0.5% ~ 2%, Na
2o15% ~ 18%, B
2o
34.5% ~ 9%, and CaO and MgO sum is 8% ~ 12%, K
2o and Na
2o sum is less than 17%.
3. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that melten glass liquid is after clarification and homogenization, flow out with low discharge stream stock form, stream plume amount is 40kg/h ~ 280kg/h, and stream stock tip temperature is 1150 DEG C ~ 1000 DEG C.
4. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that centrifugal pan diameter is 50mm ~ 400mm, sidewall hole count is 2000 holes, hole ~ 16000, sidewall aperture is 0.4mm ~ 0.8mm, centrifugal pan temperature is 850 DEG C ~ 1000 DEG C, glass metal is gone out by sidewall hole centrifugal drying with the speed of 2400rad/min ~ 3000rad/min by centrifugal pan, and now glass metal viscosity controller is 10
4pas ~ 10
55pas.
5. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that high-speed and high-temperature uprush top gas flow temperature is 1000 DEG C ~ 1400 DEG C, top gas velocity is 150m/s ~ 300m/s, carry after high-octane air-flow and glass metal meet, carry out energy exchange, make glass metal viscosity drop be low to moderate 10
1.8pas ~ 10
3.5pas.
6. viscosity 10 according to claim 5
18pas ~ 10
35the glass metal of pas, is characterized in that this glass metal is by high-speed and high-temperature air-flow stretched vertically, reaches glass melt always and softens viscosity 10
76pas, changes vitreous state fiber into.
7. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that cold air stream gas flow temperature is 5 ~ 30 DEG C, flow is 0.1 ~ 1.0Nm
3/ h.
8. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that described solidification value is 180 ~ 210 DEG C, set time is 3 ~ 15min.
9. the preparation method of the heat insulation glass fibre cotton felt of light sound-proof according to claim 1, it is characterized in that, in described urea and cyanurotriamide modified phenolic resin adhesive, the ratio of urea, trimeric cyanamide, phenol and formaldehyde is: 1: (0.2 ~ 0.5): (2 ~ 3.1): (5 ~ 7.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163561.8A CN104788016A (en) | 2015-04-09 | 2015-04-09 | Preparation method of light glass fiber cotton felt for sound insulation and thermal insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163561.8A CN104788016A (en) | 2015-04-09 | 2015-04-09 | Preparation method of light glass fiber cotton felt for sound insulation and thermal insulation |
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| Publication Number | Publication Date |
|---|---|
| CN104788016A true CN104788016A (en) | 2015-07-22 |
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Cited By (5)
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| CN106630651A (en) * | 2016-12-26 | 2017-05-10 | 苏州维艾普新材料股份有限公司 | Glass fiber for preparing vacuum insulated panel core material |
| CN109956708A (en) * | 2019-04-15 | 2019-07-02 | 宣汉正原微玻纤有限公司 | A kind of dedicated sound insulation of aviation, heat-protecting glass fibrous composite and preparation method thereof |
| CN114031300A (en) * | 2021-12-14 | 2022-02-11 | 重庆纤维研究设计院股份有限公司 | Glass for glass fiber, and method for producing glass fiber |
| CN114956583A (en) * | 2022-05-19 | 2022-08-30 | 宣汉正原微玻纤有限公司 | Novel dry-process glass fiber vacuum insulation panel core material and preparation method thereof |
| CN115536281A (en) * | 2022-11-01 | 2022-12-30 | 大圆节能材料股份有限公司 | Preparation method of glass liquid for glass wool production |
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Application publication date: 20150722 |