CN113149447A - Preparation method of sound-proof heat-insulation superfine glass wool fiber - Google Patents
Preparation method of sound-proof heat-insulation superfine glass wool fiber Download PDFInfo
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- CN113149447A CN113149447A CN202110426521.3A CN202110426521A CN113149447A CN 113149447 A CN113149447 A CN 113149447A CN 202110426521 A CN202110426521 A CN 202110426521A CN 113149447 A CN113149447 A CN 113149447A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention relates to the field of glass wool, and provides a preparation method of sound-proof and heat-insulating superfine glass wool fiber, which is prepared by a centrifugal fiber forming machine at a fiber forming temperature of 980-1000 ℃ and a centrifugal speed of 2600-; the raw materials comprise the following components in percentage by weight: 3-8% of fluorite; 7-12% of borax; 45-55% of quartz sand; 2-4% of dolomite; 30-40% of cullet; 2-4% of soda ash. The method has the advantages of simple process, high yield, uniform distribution of glass fibers and high fiber strength.
Description
Technical Field
The invention relates to the field of glass wool, in particular to a preparation method of sound-proof and heat-insulating superfine glass wool fibers.
Background
CN201210259367.6 discloses a centrifugal superfine glass wool, which comprises the following components in percentage by mass: 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% B2O 3. The content of Al2O3 is 1.4-3.0%, so that the crystallization tendency of molten glass can be reduced, and the fiber is flexible and free of burrs and breakage; the content of B2O3 is 5.5-7.6%, the viscosity of the glass melt can be reduced at the fiber forming temperature of 1050 +/-10 ℃, and the fiber is easy to refine. The diameter of 90% of the glass wool fibers is normally distributed at 2-4 mu m, and the length of 92% of the fibers is normally distributed at 2-3 cm. The invention also discloses a preparation method of the superfine glass wool, which comprises the steps of selecting raw materials with components meeting requirements, and putting the raw materials into a kiln to be melted into transparent glass liquid. And (3) introducing the glass liquid into a centrifugal head, and fiberizing at the flow rate of 76 +/-2 kg/h of each centrifugal head to prepare the superfine glass wool. The superfine glass wool has low heat conductivity coefficient, uniform layering and good sound and heat insulation performance. The material can be used for manufacturing sound-proof and noise-reduction cotton felts in aircraft deck boards, sound-proof and heat-insulation cotton felts for walls and roofs, heat-insulation boards and other sound-proof and heat-insulation products.
CN202010607185.8 discloses a method for producing superfine glass microfiber, comprising the following steps: weighing raw materials, pretreating quartz sand, feldspar powder, dolomite powder, calcite powder and fluorite powder, uniformly mixing with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch mixture, melting the batch mixture to obtain glass liquid, feeding the glass liquid into a centrifugal fiber forming machine, throwing the glass liquid out through a centrifugal head of the centrifugal fiber forming machine, and forming superfine glass microfiber under the action of blowing air flow. The invention can effectively improve the tensile strength of the glass microfiber, and the produced microfiber glass has the advantages of less slag balls and uniform fiber diameter, and is beneficial to improving the quality of microfiber glass wool.
CN202010059739.5 discloses a method for preparing environment-friendly superfine fiber glass wool, which comprises mixing the raw materials of cullet, borax, soda ash and feldspar according to the mass fraction, feeding the mixture into a kiln for melting, flowing to a bushing through a material channel, flowing out of the bushing, entering a centrifuge, throwing a large amount of glass thin flow from the lower side wall of the centrifuge under high-speed rotation, stretching again under high-temperature high-speed flame generated by a combustion chamber to form superfine fiber, spraying environment-friendly formaldehyde-free adhesive under the centrifuge, collecting cotton, and then curing and forming to produce the superfine fiber glass wool with the diameter of 2.5-4 mu m. The environment-friendly heat-insulation board has the advantages of environmental protection, green color, good heat-insulation effect, excellent sound insulation and noise reduction performance and wide application.
CN201910606689.5 discloses a preparation method of a high-heat-insulation microfiber glass wool heat-insulation material, belonging to the technical field of glass wool materials. The invention adopts a centrifugal blowing method to prepare the raw materials into molten glass, then the high-temperature molten glass flows through the bushing plate along the material channel to form continuous and stable molten glass flow, the flow vertically and freely falls down and enters a centrifuge with a large number of small holes on the side wall, under the action of centrifugal force, the glass liquid is thrown out from the pores to form a plurality of thin streams to form primary fibers, the primary fibers are drafted by high-temperature high-speed airflow generated by an annular combustion chamber at the outer side of the centrifuge to form secondary fibers to obtain microfiber glass wool, the prepared microfiber glass wool is flocculent in appearance, white and soft, smooth in hand feeling and good in heat preservation and insulation effects, the diameter of the fibers of the glass wool is thinner, the lower the heat conductivity coefficient is, the better heat preservation and insulation performance is achieved, and the fiber diameter is reduced under the traction of high-temperature and high-speed annular airflow, so that the heat preservation and insulation performance of the cotton fiber can be effectively improved.
Wherein, the yield of CN201210259367.6 is not more than 2000 Kg/day; CN202010607185.8, if high-quality glass wool fiber is to be produced, ball milling and ultraviolet irradiation treatment are needed, the treatment process is too complex;
CN201910606689.5 the glass fiber produced by the method is less than 1 μm, and the glass fiber does not belong to the same type of product as the product of the invention, so the proposal is not used for reference. The diameter of the glass fiber stream thrown out of the centrifugal hole of CN201910606689.5 reaches 10-30 μm, and the glass fiber stream can be formed only by secondary stretching with high-speed gas.
In view of the above, the technical problems solved by the present invention are: the purpose of producing superfine heat-insulating glass wool fibers is achieved by adjusting the formula.
Disclosure of Invention
The invention aims to provide a preparation method of sound-proof heat-insulation superfine glass wool fiber, which has the advantages of simple process, high yield, uniform distribution of glass fiber and high fiber strength.
In order to realize the purpose, the invention provides a preparation method of sound-proof and heat-insulating superfine glass wool fiber, which is prepared by a centrifugal fiber forming machine at the fiber forming temperature of 980-1000 ℃ and the centrifugal speed of 2600-;
the raw materials comprise the following components in percentage by weight:
3 to 8 percent of fluorite
7 to 12 percent of borax
45-55% of quartz sand
2 to 4 percent of dolomite
30 to 40 percent of cullet
2-4% of soda ash.
In the preparation method of the sound-proof heat-insulation superfine glass wool fiber, the raw materials comprise the following components in percentage by weight:
4 to 6 percent of fluorite
8 to 11 percent of borax
48 to 52 percent of quartz sand
3 percent of dolomite
30 to 32 percent of cullet
3 percent of soda ash.
In the above method for preparing sound-insulating and heat-insulating ultrafine glass wool fiber, the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, and the number of the micropores is 20000 +/-1000.
In the above-mentioned method for producing a sound-and heat-insulating ultra-fine glass wool fiber, the daily throughput of the single micro-pores is 0.3 kg.
In the preparation method of the sound-insulation and heat-insulation superfine glass wool fiber, in a combustion chamber outside a centrifugal head, the fiber thrown out by the centrifugal head is molded under the action of air flow to obtain the superfine glass wool fiber.
In the preparation method of the sound-insulating and heat-insulating superfine glass wool fiber, the temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
Advantageous effects
The raw materials of the invention comprise fluorite, borax, quartz sand, dolomite, cullet and soda ash, and the functions of the raw materials are as follows: quartz sand: the main component is quartz, and the main incorporation is silica. Silica functions to improve the hardness, mechanical strength, chemical stability, thermal stability and ultraviolet light transmittance of the glass. Dolomite: the glass is a double salt of calcium carbonate and magnesium carbonate, and magnesium oxide is mainly introduced, so that the glass frit property can be improved, and the glass crystallization tendency can be reduced. Glass cullet: the production of glass fiber mainly aims at reducing cost, saving energy and reducing consumption, and the alkali metal oxide component in the common silicate glass is the ideal component of the glass fiber. Soda ash: the main component is sodium carbonate, and sodium oxide is mainly introduced in glass production, so that the viscosity of glass can be reduced, the glass is easy to melt, and the glass is a better fluxing agent for the glass. Borax: boron oxide is mainly introduced, the boron oxide can reduce the expansion coefficient of the glass, improve the thermal stability and the chemical stability of the glass, and simultaneously, the boron oxide can also play a role of a fluxing agent to accelerate the clarification of the glass and reduce the crystallization capacity of the glass. Fluorite: mainly acting as a fluxing agent and a clarifying agent.
Through the matching of the raw materials, the centrifugal head with the aperture of 0.6mm can output glass fiber liquid at a high flow rate, the single-day yield can reach more than 6t, the fiber diameter and length distribution are more uniform, the monofilament strength is high, and the glass wool product prepared by the centrifugal head has good integral strength.
Detailed Description
The invention will now be further described with reference to the following examples, which are not to be construed as limiting the invention in any way, and any limited number of modifications which can be made within the scope of the claims of the invention are still within the scope of the claims of the invention.
In order to explain the technical contents of the present invention in detail, the following description is further made in conjunction with the embodiments.
Example 1
The sound-proof heat-insulation superfine glass wool fiber comprises the following raw materials:
fluorite 3%
Borax 7%
50 percent of quartz sand
3 percent of dolomite
34 percent of cullet
3 percent of soda ash.
The preparation process comprises the following steps: the fused raw materials are prepared by a centrifugal fiber forming machine at the fiber forming temperature of 980-1000 ℃ and the centrifugal speed of 2600-; the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, the number of the micropores is 20000 +/-1000, the daily treatment capacity of a single micropore is 0.3kg, and in a combustion chamber at the outer side of the centrifugal head, fibers thrown away by the centrifugal head are molded under the action of airflow to obtain the superfine glass wool fibers.
The temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
And finally, settling, spraying an adhesive, dropping on a cotton collecting net, and curing and forming to obtain a platy glass wool product.
Example 2
The sound-proof heat-insulation superfine glass wool fiber comprises the following raw materials:
fluorite 4%
8 percent of borax
50 percent of quartz sand
3 percent of dolomite
32 percent of cullet
3 percent of soda ash.
The preparation process comprises the following steps: the fused raw materials are prepared by a centrifugal fiber forming machine at the fiber forming temperature of 980-1000 ℃ and the centrifugal speed of 2600-; the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, the number of the micropores is 20000 +/-1000, the daily treatment capacity of a single micropore is 0.3kg, and in a combustion chamber at the outer side of the centrifugal head, fibers thrown away by the centrifugal head are molded under the action of airflow to obtain the superfine glass wool fibers.
The temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
And finally, settling, spraying an adhesive, dropping on a cotton collecting net, and curing and forming to obtain a platy glass wool product.
Example 3
The sound-proof heat-insulation superfine glass wool fiber comprises the following raw materials:
fluorite 6%
Borax 9%
49 percent of quartz sand
3 percent of dolomite
30 percent of cullet
3 percent of soda ash.
The preparation process comprises the following steps: the fused raw materials are prepared by a centrifugal fiber forming machine at the fiber forming temperature of 980-1000 ℃ and the centrifugal speed of 2600-; the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, the number of the micropores is 20000 +/-1000, the daily treatment capacity of a single micropore is 0.3kg, and in a combustion chamber at the outer side of the centrifugal head, fibers thrown away by the centrifugal head are molded under the action of airflow to obtain the superfine glass wool fibers.
The temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
And finally, settling, spraying an adhesive, dropping on a cotton collecting net, and curing and forming to obtain a platy glass wool product.
Example 4
The sound-proof heat-insulation superfine glass wool fiber comprises the following raw materials:
8 percent of fluorite
8 percent of borax
48 percent of quartz sand
3 percent of dolomite
30 percent of cullet
3 percent of soda ash.
The preparation process comprises the following steps: the fused raw materials are prepared by a centrifugal fiber forming machine at the fiber forming temperature of 980-1000 ℃ and the centrifugal speed of 2600-; the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, the number of the micropores is 20000 +/-1000, the daily treatment capacity of a single micropore is 0.3kg, and in a combustion chamber at the outer side of the centrifugal head, fibers thrown away by the centrifugal head are molded under the action of airflow to obtain the superfine glass wool fibers.
The temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
And finally, settling, spraying an adhesive, dropping on a cotton collecting net, and curing and forming to obtain a platy glass wool product.
Comparative example
Referring to example 3, the difference lies in the formulation changes, which are specified below:
1.2 percent of fluorite
7.8 percent of borax
49 percent of quartz sand
10 percent of dolomite
29 percent of cullet
3 percent of soda ash.
Performance detection
The performance detection mainly relates to the following performance detections:
1. fiber diameter distribution;
2. testing the tensile strength; filling the sample preparation mold with the sample prepared in the embodiment, and placing the sample preparation mold in a vacuum drying oven at 60 ℃ for 24 hours to remove water; repeating the above steps until the reactant fills the mold after the water is removed; reacting in a muffle furnace at 200 ℃ for 5 minutes, cooling, demolding and measuring
The performance test results are as follows:
in examples 1 to 4, 90% or more of the fiber diameters were normally distributed in the diameter range of 2 to 4 μm, and in comparative example 1, only about 78% of the fibers were distributed in the diameter range, and the uniformity of the diameters was not good. The non-uniform diameter distribution resulted in a variation in fiber length, and examples 1 to 4 were also significantly superior to comparative example 1 in terms of fiber length distribution uniformity.
The tensile strength test results for each example are as follows:
| example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | |
| Tensile strength psi | 45 | 39 | 41 | 37 | 32 |
The examples presented herein are only implementations selected according to a combination of all possible examples. The appended claims should not be limited to the description of the embodiments of the invention. Where numerical ranges are used in the claims, including sub-ranges therein, variations in these ranges are also intended to be covered by the appended claims.
Claims (6)
1. A preparation method of sound-proof and heat-insulation superfine glass cotton fiber is characterized in that the fiber is prepared by a centrifugal fiber forming machine at a centrifugal speed of 2600-;
the raw materials comprise the following components in percentage by weight:
3 to 8 percent of fluorite
7 to 12 percent of borax
45-55% of quartz sand
2 to 4 percent of dolomite
30 to 40 percent of cullet
2-4% of soda ash.
2. The method for preparing the sound-proof and heat-insulating superfine glass wool fiber according to claim 1, wherein the raw materials comprise the following components in percentage by weight:
4 to 6 percent of fluorite
8 to 11 percent of borax
48-52% of quartz sand
3 percent of dolomite
30 to 32 percent of cullet
3 percent of soda ash.
3. The method for preparing sound and heat insulating superfine glass wool fiber according to claim 1, wherein the diameter of the micropores of the centrifugal head of the centrifugal fiberizer is 0.6mm, and the number of the micropores is 20000 +/-1000.
4. The method for preparing an acoustic and thermal insulating ultrafine glass wool fiber according to claim 3, wherein the daily treatment amount of the individual micropores is 0.3 kg.
5. The method for preparing sound-proof and heat-insulating superfine glass wool fiber as claimed in claim 1, wherein the superfine glass wool fiber is obtained by molding the fiber thrown from the centrifugal head under the action of air flow in a combustion chamber outside the centrifugal head.
6. The method for preparing the sound-proof and heat-insulation superfine glass wool fiber according to claim 5, wherein the temperature of the combustion chamber is 1390-1400 ℃, the flow rate of natural gas in the combustion chamber is 60-70 cubic meters per hour, and the air flow rate is 700-800 cubic meters per hour.
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| CN202110426521.3A CN113149447A (en) | 2021-04-20 | 2021-04-20 | Preparation method of sound-proof heat-insulation superfine glass wool fiber |
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| CN202110426521.3A CN113149447A (en) | 2021-04-20 | 2021-04-20 | Preparation method of sound-proof heat-insulation superfine glass wool fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570237A (en) * | 2012-07-31 | 2014-02-12 | 苏州维艾普新材料有限公司 | Low-temperature centrifugation method for preparing superfine glass wool |
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2021
- 2021-04-20 CN CN202110426521.3A patent/CN113149447A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570237A (en) * | 2012-07-31 | 2014-02-12 | 苏州维艾普新材料有限公司 | Low-temperature centrifugation method for preparing superfine glass wool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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: 20210723 |
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