CN108840574B - Glass composition for 5 ten thousand ton spun yarn tank furnace - Google Patents
Glass composition for 5 ten thousand ton spun yarn tank furnace Download PDFInfo
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- CN108840574B CN108840574B CN201811110131.XA CN201811110131A CN108840574B CN 108840574 B CN108840574 B CN 108840574B CN 201811110131 A CN201811110131 A CN 201811110131A CN 108840574 B CN108840574 B CN 108840574B
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- glass composition
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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
-
- 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
Abstract
The invention provides a glass composition for a 5 ten thousand ton spun yarn tank furnace, which comprises the following components in percentage by weight: siO 2 2 55.2‑64.5％、Al 2 O 3 4.5‑8.5％、Na 2 O 12.5‑16.2％、CaO 10.8‑15.8％、K 2 O 1.5‑5.5％、ZrO 0.30‑0.50％、MgO 0.15‑0.7％、Fe 2 O 3 0.18-0.68%, and the main components of the glass composition are perlite, pyrophyllite, quartz sand, calcite, potash feldspar, sodium oxide, calcium oxide and soda ash. The glass composition of the invention does not contain boron, fluorine and other components which damage the glass structure, achieves the balance of melting wire drawing and the physical and chemical properties of the fiber, and particularly greatly improves the acid resistance compared with other glass fibers.
Description
Technical Field
The invention relates to a glass composition, in particular to a glass composition for a 5 ten thousand ton spinning pool kiln, belonging to the field of special glass fiber.
Background
The glass fiber belongs to an inorganic fiber material, and has excellent performances of temperature resistance, corrosion resistance, high strength, low elongation and the like and lower price. After the technology for producing glass fiber by a large-scale tank furnace method breaks through, the production cost of the glass fiber is obviously reduced, so the application range and the application amount of the glass fiber are continuously expanded, and the glass fiber is widely applied to the industries of aerospace, automobiles, buildings, electronics, electrical, chemical industry, metallurgy, environmental protection, national defense and the like. The glass fiber reinforced organic polymer material can be used for preparing composite materials with excellent performance, and can also be used for reinforcing inorganic materials (such as cement) to obtain application in the fields of road, bridge construction and the like.
At present, the alkali-free glass fiber and the medium-alkali glass fiber are widely applied, the alkali-free glass fiber belongs to aluminoborosilicate glass fiber, the tensile strength and the electrical insulation performance of the glass fiber are good, and because the glass components contain a certain amount of boron and fluorine, the structural framework is loose and incomplete, the acid corrosion resistance is poor, and the composite material prepared by the glass fiber is easy to be corroded by acid in an acid environment, is peeled from a resin matrix and loses strength rapidly. The medium alkali glass fiber belongs to a soda-lime silicate component, has good chemical stability, cannot be used as an electrical insulating material due to high alkali content, and has relatively poor physical indexes such as tensile strength and the like.
Disclosure of Invention
Aiming at the problems of the existing alkali-free glass fiber and medium-alkali glass fiber, the glass composition of the 5 ten thousand ton spinning pool furnace with reasonable glass component design is provided. On the basis of keeping the high physical properties of the alkali-free glass fiber, the alkali-free glass fiber has the characteristics of acid resistance, low cost and the like of the medium-alkali glass fiber, and is easy to realize large-scale industrial production by a tank furnace method.
The purpose of the invention is realized by the following technical scheme:
a glass composition for a 5 ten thousand ton spun yarn tank furnace comprises the following steps:
(1) Conveying the mixture into a kiln for melting into molten glass;
(2) Drawing the molten glass into fibers, wherein the diameter of the fibers is less than or equal to 7 mu m;
the main components of the mixture are perlite, pyrophyllite, quartz sand, calcite, potash feldspar, sodium oxide, calcium oxide and soda ash; the fiber comprises the following components in percentage by weight: siO 2 2 ：55.2-64.5％、Al 2 O 3 ：4.5-8.5％、Na 2 O：12.5-16.2％、CaO：10.8-15.8％、K 2 O：1.5-5.5％、ZrO：0.30-0.50％、MgO：0.15-0.7％、Fe 2 O 3 ：0.18-0.68％。
Preferably, the conveying equipment in the step (1) is a pneumatic conveying system; the melting temperature in the kiln is 1300-1500 ℃.
Preferably, the melting mode in the step (1) is pure oxygen combustion, full electric melting or pure oxygen combustion electric melting.
Preferably, the drawing in the step (2) means that the molten glass is made into fibers through a bushing and a drawing machine.
Another aspect of the invention is a 5-ten thousand ton glass composition for a spun yarn tank furnace, comprising the following components in parts by weight: siO 2 2 ：55.2-64.5％、Al 2 O 3 ：4.5-8.5％、Na 2 O：12.5-17.5％、CaO：10.8-15.8％、K 2 O：1.5-5.5％、ZrO：0.30-0.50％、MgO：0.15-0.7％、Fe 2 O 3 ：0.18-0.68％。
Preferably, the components and weight contents are as follows: siO 2 2 ：57.5-61.5％、Al 2 O 3 ：6.5-7.3％、Na 2 O：14.5-17.5％、CaO：13-15.5％、K 2 O：2.5-3.5％、ZrO：0.35-0.45％、MgO：0.2-0.6％、Fe 2 O 3 ：0.28-0.48％。
Preferably, the following components and weight contents are as follows: na (Na) 2 O：15.5-16.2％、CaO：13.5-14.5％、K 2 O：2.8-3.3％、ZrO：0.35-0.45％、MgO：0.38-0.48％、Fe 2 O 3 ：0.32-0.42％。
Preferably, the components and weight contents are as follows: siO 2 2 ：59.5％、Al 2 O 3 ：6.9％、Na 2 O：15.6％、CaO：13.9％、K 2 O：2.93％、ZrO：0.38％、MgO：0.42％、Fe 2 O 3 ：0.37％。
The glass composition raw materials of the invention are used for melting glass, and the glass can be melted in a kiln by adopting a pure oxygen combustion, full electric melting or pure oxygen combustion electric melting-assisting mode to form a homogeneous glass solution, thereby greatly reducing the melting cost. The kiln can be made of refractory materials with high temperature resistance and molten glass corrosion resistance, such as compact zirconium bricks, electric-melting mullite bricks and the like. When the glass fiber is prepared from the 5-ten-thousand-ton glass composition for the spun yarn tank furnace, a furnace passage with a refractory material compact zirconium brick, a corundum brick, an electric melting chromium zirconium corundum brick and mullite structure is adopted for one-step wire drawing production. Examples the non-illustrated techniques are referred to in the art.
The invention accurately regulates and controls SiO 2 、Al 2 O 3 、Na 2 The content ranges of the four main components of O and CaO optimize the internal structure of the glass fiber, ensure that the glass fiber has good mechanical property, corrosion resistance and formability, and overcome the problem of obtaining high-performance glass fiber under low production difficulty; simultaneously, proper amount of K is properly introduced through raw materials 2 O、MgO、Fe 2 O 3 The components further improve the forming operation of the glass fiber, reduce the forming operation difficulty and improve the mechanical property and the corrosion resistance of the glass fiber. The perlite fiber component does not contain boron, fluorine and harmful clarifying agents, the service life of the kiln refractory material is prolonged, and energy conservation, environmental protection and emission reduction are realized. Meanwhile, the glass fiber is easy to realize industrial production (the forming temperature is not more than 1230 ℃, the upper limit temperature of crystallization is lower than 1130 ℃, and the temperature interval of wire drawing forming operation is more than 70 ℃).
Detailed Description
In order to better illustrate the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below.
Example 1
The glass composition for the 5 ten thousand ton spun yarn tank furnace comprises the following main components in percentage by weight:
SiO 2 ：55.2％、Al 2 O 3 ：8.5％、Na 2 O：13.3％、CaO：15.8％、K 2 O：5.5％、ZrO：0.32％、MgO：0.70％、Fe 2 O 3 :0.68% and the others 0.02%.
According to the chemical composition of the above-mentioned formula, the proportioning demand of various raw materials is obtained by detection and calculation, and then the raw materials are accurately metered by a weighing system and uniformly mixed by a mixing system to prepare the batch. The batch materials are conveyed to a kiln front bin through a pneumatic conveying system, an automatic feeder is used for feeding materials, and the clear and homogenized molten glass is obtained by melting in a kiln with pure oxygen combustion at 1510 ℃. The melted glass liquid flows to a wire drawing channel and a wire drawing forming system to be directly drawn into special glass fiber, the temperature of a wire drawing bushing is 1210 ℃, and the diameter of the special glass fiber is 7 mu m +/-0.5 mu m.
Example 2
The glass composition for the 5 ten thousand ton spun yarn tank furnace comprises the following main components in percentage by weight:
SiO 2 ：64.5％、Al 2 O 3 ：5.5％、Na 2 O：14.3％、CaO：10.8％、K 2 O：3.0％、ZrO：0.50％、MgO：0.52％、Fe 2 O 3 :0.38% and the other 0.50%.
According to the chemical composition of the above-mentioned formula, the proportioning demand of various raw materials can be obtained by detection and calculation, and then the raw materials are accurately metered by a weighing system, and uniformly mixed by a mixing system to obtain the batch. The batch materials are conveyed to a front bin of the kiln through a pneumatic conveying system, an automatic feeder is used for feeding the batch materials, and the clear and homogenized molten glass is obtained by melting the batch materials at 1450 ℃ by using a pure oxygen combustion electric melting-assisted kiln. The melted glass liquid flows to a wire drawing channel and a wire drawing forming system to be directly drawn into special glass fiber, the temperature of a wire drawing bushing is 1230 ℃, and the diameter of the special glass fiber is 5 mu m +/-0.5 mu m.
Example 3
The glass composition for the 5-ten-thousand-ton spun yarn tank furnace comprises the following main components in parts by weight:
preferably, the components and weight contents are as follows: siO 2 2 ：59.5％、Al 2 O 3 ：6.9％、Na 2 O：15.6％、CaO：13.9％、K 2 O：2.93％、ZrO：0.38％、MgO：0.42％、Fe 2 O 3 ：0.37％。
According to the chemical composition of the above-mentioned formula, the proportioning demand of various raw materials is obtained by detection and calculation, and then the raw materials are accurately metered by a weighing system and uniformly mixed by a mixing system to prepare the batch. The batch materials are conveyed to a front bin of a kiln through a pneumatic conveying system, the batch materials are fed by an automatic feeder, and the batch materials are melted by a kiln which is burnt by pure oxygen at 1550 ℃ to obtain the clarified and homogenized molten glass. The melted glass liquid flows to a wire drawing channel and a wire drawing forming system to be directly drawn into special glass fiber, the temperature of a wire drawing bushing is 1180 ℃, and the diameter of the special glass fiber is 3 mu m +/-0.5 mu m.
The product properties of examples 1 to 3 were as follows:
| basic properties of fiber | Example 1 | Example 2 | Example 3 |
| Density (g/cm) 3 ) | 2.48 | 2.48 | 2.48 |
| Softening Point (. Degree. C.) | 756 | 756 | 756 |
| Fiber diameter (μm) | 7 | 5 | 3 |
| Tensile Strength (MPa) | 3500 | 4015 | 4070 |
| Elongation at Break (%) | 4.92 | 4.65 | 4.65 |
| Coefficient of thermal expansion | 5.4 | 5.4 | 5.4 |
| Modulus of elasticity (GPa) | 73 | 73 | 73 |
| Strength Retention after acid (%) | ≥90 | ≥90 | ≥90 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. The glass composition for the 5-ten-thousand-ton spun yarn tank furnace is characterized by comprising the following steps of:
(1) Conveying the mixture into a kiln to be melted into molten glass;
(2) Drawing the glass liquid into fibers, wherein the diameters of the fibers are 3 micrometers +/-0.5 micrometers;
the main components of the mixture are perlite, pyrophyllite, quartz sand, calcite, potash feldspar, sodium oxide, calcium oxide and sodium carbonate; the fiber comprises the following components in percentage by weight: siO 2 2 ：59.5％、Al 2 O 3 ：6.9％、Na 2 O：15.6％、CaO：13.9％、K 2 O：2.93％、ZrO：0.38％、MgO：0.42％、Fe 2 O 3 ：0.37％；
According to the chemical composition of each formula listed above, the proportioning demand of each raw material is obtained through detection and calculation, and after the proportioning demand is accurately measured by a weighing system, the raw materials are uniformly mixed by a mixing system to prepare a batch mixture; the batch materials are conveyed to a front bin of a kiln through a pneumatic conveying system, an automatic feeder is used for feeding the batch materials, and the batch materials are melted by a kiln which is burnt by pure oxygen at 1550 ℃ to obtain clarified and homogenized molten glass; the melted glass liquid flows to a wire drawing channel and a wire drawing forming system to be directly drawn into special glass fiber, and the temperature of the wire drawing bushing plate is 1180 ℃.
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| CN201811110131.XA CN108840574B (en) | 2018-09-21 | 2018-09-21 | Glass composition for 5 ten thousand ton spun yarn tank furnace |
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| CN112174537A (en) * | 2020-10-26 | 2021-01-05 | 浙江鸿盛环保科技集团有限公司 | Acid-resistant glass fiber composition, acid-resistant glass fiber and preparation method thereof |
| CN113896425B (en) * | 2021-11-10 | 2023-01-24 | 泰安顺茂新材料技术有限公司 | Erosion resistant glass compositions and fibers thereof |
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| US7829490B2 (en) * | 2006-12-14 | 2010-11-09 | Ppg Industries Ohio, Inc. | Low dielectric glass and fiber glass for electronic applications |
| US9556059B2 (en) * | 2009-08-03 | 2017-01-31 | Hong Li | Glass compositions and fibers made therefrom |
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| CN101687691A (en) * | 2007-05-23 | 2010-03-31 | 欧洲圣戈班技术结构公司 | Glass yarns suitable for reinforcing organic and/or inorganic materials |
| CN101215079A (en) * | 2008-01-02 | 2008-07-09 | 襄樊汇尔杰玻璃纤维有限责任公司 | Method for producing alkali-proof glass fiber |
| CN102173594A (en) * | 2011-02-14 | 2011-09-07 | 重庆国际复合材料有限公司 | Boron-free fluorine-free glass fiber composition |
| CN102390934A (en) * | 2011-08-10 | 2012-03-28 | 巨石集团有限公司 | Glass fiber compound |
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