CN103663955A - Ultrafine silicon dioxide glass fiber and preparation method thereof - Google Patents
Ultrafine silicon dioxide glass fiber and preparation method thereof Download PDFInfo
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- CN103663955A CN103663955A CN201210288060.9A CN201210288060A CN103663955A CN 103663955 A CN103663955 A CN 103663955A CN 201210288060 A CN201210288060 A CN 201210288060A CN 103663955 A CN103663955 A CN 103663955A
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- powder
- silicon dioxide
- glass fibre
- raw material
- dioxide glass
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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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/32—Doped silica-based glasses containing metals containing aluminium
Abstract
The invention discloses an ultrafine silicon dioxide glass fiber and a preparation method thereof. The ultrafine silicon dioxide glass fiber is prepared by the steps of: by taking Si powder as a raw material and a certain amount of Al powder as a reaction accelerant, performing vacuum ball milling and activation on the raw material, igniting the accelerant by an electrified tungsten wire coil in an atmosphere environment and performing spontaneous active combustion on Si/Al powder. The method has the advantages of simple raw material, low cost, low energy consumption, no pollution and the like, and is conductive to development of national energy conservation and emission reduction Twelfth Five-Year plan career.
Description
Technical field
The present invention relates to a kind of glass fibre and preparation method thereof, especially relate to a kind of superfine silicon dioxide glass fibre and preparation method thereof.
Background technology
Glass fibre is a kind of ceramic of excellent performance, SiO
2(silicon-dioxide) is the main body that it forms skeleton, and it is with silicon-oxy tetrahedron [SiO
4] structure form irregular contiguous network structure.There is good insulating, thermotolerance is strong, erosion resistance good, physical strength advantages of higher, is widely used in electromechanics, metallurgy, oil, chemical industry, building and aerospace field as the enhancing toughening material in heat-preservation and sound-absorption material, electrically insulating material and matrix material.
Japanese Patent JP137688/95 discloses a kind of glass fibre of low-k.The described glass fibre of this invention through electric furnace melting at batching, 1500 ℃～1550 ℃, prepare sheet glass, sheet glass and at 1300 ℃～1400 ℃ lower-glass fibers, manufacture the techniques such as melting in stoves, spinning and be prepared from.
Chinese patent CN 100564294C discloses a kind of production method of alkali resistant glass fibre.This invention is pulverized and mixed quartz sand, saltpetre, calcite, zircon sand, soda ash, fluorite rear and stirs, send in melting pool and found, after clarification, homogenizing, flow in operating pool, in the platinum bushing plate in 800～2400 holes, flow out, surface applies one deck macromolecule emulsion again, is finally wound around and is prepared into glass fibre.
Chinese patent CN 101811824B discloses a kind of production method of super glass wool.The method is by raw material weighing, mixing such as glass cullet, feldspar, rhombspar, soda ash, boraxs, and compound is founded, obtain even, pure, transparent glass metal, then glass metal is imported to whizzer fibre equipment obtain super glass wool, Fibre diameter is within the scope of 2 μ m～4 μ m.
Current glass fibre both domestic and external is all that to take glass sphere or discarded glass be basic raw material, then adds other industrial chemicals, through technique manufactures such as batching, high temperature melting, clarification, homogenizing, wire drawings, forms.Glass fiber industry is a high energy consumption industry, and energy expenditure occupies 30%～45% of glass fibre production cost, and especially glass fiber kiln and molten bath energy consumption, accounted for most of energy expenditure.Meanwhile, in glass fibre production process, produce 1400 ℃ of above high temperature, simultaneously with waste gas, waste water, the waste residue of some amount, cause certain environment to pollute.
Summary of the invention
Object of the present invention is intended to overcome the deficiencies in the prior art, a kind of superfine silicon dioxide glass fibre and preparation method thereof is provided, use the method can prepare the beta glass fibre that diameter reaches 0.5 μ m, and energy consumption is low in preparation process, without environmental pollutions such as waste gas, waste water, waste residues.
For realizing the technical scheme of object employing of the present invention, be: a kind of superfine silicon dioxide glass fibre is provided, it is characterized in that this superfine silicon dioxide glass fibre is to take Si powder as raw material, take Al powder as reaction promotor, raw material is after the activation of vacuum ball milling, under atmospheric environment, with the tungsten filament coil promotor of igniting of energising, by the constitutive activity burning of Si/Al powder, prepare a kind of superfine silicon dioxide glass fibre.
Described superfine silicon dioxide glass fibre, is characterized in that this Fibre diameter is 0.5 μ m～5 μ m, the SiO in fiber
2content is not less than 95%.
Described Si powder, is characterized in that Si powder particles size is not less than 200 orders, preferred 800 orders, and purity is not less than 99%, and preferably 99.99%.
Described Al powder, is characterized in that Al powder is as the reacting movable agent of Si powder, and its particle size is not less than 300 orders, preferred 625 orders, and purity is not less than 99%, and preferably 99.99%.
The distance of described tungsten filament coil and mixed powder is 0mm～1mm, and Heating temperature is 1250 ℃～1350 ℃.
The invention also discloses a kind of preparation method of above-mentioned superfine silicon dioxide glass fibre, it is characterized in that comprising the step of following order:
(1) get a part of pure Si powder raw material vacuum ball milling 2～4h in ball mill, material ball ratio is 1:(6～10), with this, reduce feed particles size, increase raw material active;
(2) by Al powder: the mass ratio of Si powder is 1:(5～20) proportioning, Al powder is mixed with Si powder, and in ball mill vacuum ball milling 2～4h, material ball ratio is 1:(6～10), with this, reduce feed particles size, increase raw material active;
(3) get the pure Si powder described in 85%～95% step 1 and insert in crystal vessel, the remaining Si/Al mixed powder described in step 2 that measures covers above pure Si powder;
(4) tungsten filament coil is placed in to above-mentioned crystal vessel powder top, and to tungsten filament coil energising igniting, temperature is controlled at 1250 ℃～1350 ℃;
(5) combustion reactions of powder is triggered, and spontaneous combustion in atmospheric environment, along with burning wave propagation, is prepared superfine silicon dioxide glass fibre.
Effect: the present invention compared with prior art, has the following advantages:
(1) this preparation method is usingd Si powder as main raw material, then the Al powder that is aided with some amount prepares superfine silicon dioxide glass fibre as reaction promotor, has raw material simple, the advantage that cost is low;
(2) this preparation method heats the preparation that can realize superfine silicon dioxide glass fibre by tungsten filament coil, has replaced the kiln wire drawing preparation method of traditional high energy consumption, has the advantages such as method is simple, energy consumption is low, pollution-free.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of the superfine silicon dioxide glass fibre of embodiment 1 preparation.
Fig. 2 is the energy spectrogram of the superfine silicon dioxide fiberglass surfacing of embodiment 1 preparation.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims to the modification of the various equivalent form of values of the present invention and limit.
embodiment 1
(purity > 99.9% to get 500gSi powder, 300 orders) vacuum ball milling 3h in ball mill, material ball ratio is 1:8, by 5gAl powder, (purity > 99.9%, 300 orders) (purity > 99.9% with 50gSi powder, 300 orders) mix, and in ball mill vacuum ball milling 3h, material ball ratio is 1:8.The pure Si powder of getting after 360g ball milling is inserted in crystal vessel, the Si/Al mixed powder of getting again after 40g ball milling covers above pure Si powder, then tungsten filament coil is placed in to the powder top of above-mentioned crystal vessel, and to tungsten filament coil energising igniting, temperature is controlled at 1330 ℃, the combustion reactions of powder is triggered, spontaneous combustion in atmospheric environment, along with burning wave propagation, prepares superfine silicon dioxide glass fibre, Fibre diameter is within the scope of 1 μ m～5 μ m, and mean diameter is 3 μ m.
embodiment 2
(purity > 99.9% to get 300gSi powder, 800 orders) vacuum ball milling 2h in ball mill, material ball ratio is 1:6, by 5gAl powder, (purity > 99.9%, 625 orders) (purity > 99.9% with 40gSi powder, 800 orders) mix, and in ball mill vacuum ball milling 2h, material ball ratio is 1:6.The pure Si powder of getting after 270g ball milling is inserted in crystal vessel, the Si/Al mixed powder of getting again after 30g ball milling covers above pure Si powder, then tungsten filament coil is placed in to the powder top of above-mentioned crystal vessel, and to tungsten filament coil energising igniting, temperature is controlled at 1300 ℃, the combustion reactions of powder is triggered, spontaneous combustion in atmospheric environment, prepare superfine silicon dioxide glass fibre, Fibre diameter is within the scope of 0.5 μ m～5 μ m, and mean diameter is 1.6 μ m.
Above are only single embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading the scope of protection of the invention.In every case be the content that does not depart from technical solution of the present invention, any type of simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (6)
1. a superfine silicon dioxide glass fibre, it is characterized in that this superfine silicon dioxide glass fibre is to take Si powder as raw material, take Al powder as reaction promotor, raw material is after the activation of vacuum ball milling, under atmospheric environment, with the tungsten filament coil promotor of igniting of energising, by the constitutive activity burning of Si/Al powder, prepare a kind of superfine silicon dioxide glass fibre.
2. according to the superfine silicon dioxide glass fibre described in claims 1, it is characterized in that this Fibre diameter is 0.5 μ m～5 μ m, the SiO in fiber
2content is not less than 95%.
3. according to the Si powder described in claims 1, it is characterized in that Si powder particles size is not less than 200 orders, preferred 800 orders, purity is not less than 99%, and preferably 99.99%.
4. according to the Al powder described in claims 1, it is characterized in that Al powder is as the reacting movable agent of Si powder, its particle size is not less than 300 orders, preferred 625 orders, and purity is not less than 99%, and preferably 99.99%.
5. the distance according to the tungsten filament coil described in claims 1 and mixed powder is 0mm～1mm, and Heating temperature is 1250 ℃～1350 ℃.
6. a preparation method for superfine silicon dioxide glass fibre, is characterized in that comprising the step of following order:
(1) get a part of pure Si powder raw material vacuum ball milling 2～4h in ball mill, material ball ratio is 1:(6～10), with this, reduce feed particles size, increase raw material active;
(2) by Al powder: the mass ratio of Si powder is 1:(5～20) proportioning, Al powder is mixed with Si powder, and in ball mill vacuum ball milling 2～4h, material ball ratio is 1:(6～10), with this, reduce feed particles size, increase raw material active;
(3) get the pure Si powder described in 85%～95% step 1 and insert in crystal vessel, the remaining Si/Al mixed powder described in step 2 that measures covers above pure Si powder;
(4) tungsten filament coil is placed in to above-mentioned crystal vessel powder top, and to tungsten filament coil energising igniting, temperature is controlled at 1250 ℃～1350 ℃;
(5) combustion reactions of powder is triggered, and spontaneous combustion in atmospheric environment, along with burning wave propagation, is prepared superfine silicon dioxide glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288060.9A CN103663955A (en) | 2012-09-14 | 2012-09-14 | Ultrafine silicon dioxide glass fiber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288060.9A CN103663955A (en) | 2012-09-14 | 2012-09-14 | Ultrafine silicon dioxide glass fiber and preparation method thereof |
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| CN103663955A true CN103663955A (en) | 2014-03-26 |
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| CN201210288060.9A Pending CN103663955A (en) | 2012-09-14 | 2012-09-14 | Ultrafine silicon dioxide glass fiber and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2167986Y (en) * | 1993-06-22 | 1994-06-08 | 武汉工业大学 | Self-overgrowth high-temp. material-synthetizing device |
| CN102502664A (en) * | 2011-11-11 | 2012-06-20 | 武汉大学 | Synthetic method of SiO2 nano fibrous bundle array |
-
2012
- 2012-09-14 CN CN201210288060.9A patent/CN103663955A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2167986Y (en) * | 1993-06-22 | 1994-06-08 | 武汉工业大学 | Self-overgrowth high-temp. material-synthetizing device |
| CN102502664A (en) * | 2011-11-11 | 2012-06-20 | 武汉大学 | Synthetic method of SiO2 nano fibrous bundle array |
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Application publication date: 20140326 |