CN104695053A - Preparation method of fireproof fibers - Google Patents
Preparation method of fireproof fibers Download PDFInfo
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- CN104695053A CN104695053A CN201310653648.4A CN201310653648A CN104695053A CN 104695053 A CN104695053 A CN 104695053A CN 201310653648 A CN201310653648 A CN 201310653648A CN 104695053 A CN104695053 A CN 104695053A
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- spinning
- slurrying
- pva
- pvb
- sio
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Abstract
The invention relates to a preparation method of fireproof fibers and belongs to the field of spinning. A mixed solution of PVA and PVB as additive is spun by a melt spinning method so that additive volatilization is effectively improved and fiber surface roughness is reduced. Through use of an excess amount of silicon oxide, raw material granularity is reduced and a production cost is reduced.
Description
Technical field
The present invention relates to a kind of preparation method of refractory fibre, belong to spinning field.
Background technology
Mullite fiber is a kind of refractory material of high-quality, it has features such as expanding evenly, thermal shock resistance is fabulous, load softening point is high, high-temerature creep value is little, hardness is large, resistance to chemical corrosion is good, and its weaving techniques mainly comprises sol-gal process, polymerization, melt blending spin processes etc.When carrying out melt blending weaving mullite fiber, the additive of use often volatilizees at a lower temperature, makes the fiber surface of gained coarse, affects the performance of mullite fiber.
Summary of the invention
The object of this invention is to provide a kind of preparation method of refractory fibre, the mullite fiber utilizing the method to prepare has that surface roughness is low, fire-resistant, tensile strength high.
A preparation method for refractory fibre, comprises slurrying, spinning and heat treated step, and the step of described slurrying is: by Al
2o
3with SiO
2material powder in molar ratio 3:2.05 ~ 2.25 is dissolved in mixed solution, stirs,
Wherein, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 1 μm ~ 100 μm; Described mixed solution is the solution that PVA, PVB and diluent form, and wherein PVA and PVB accounts for the weight ratio of 10 ~ 35%, PVA and PVB of mixed solution gross weight is 1:2 ~ 10.
The preferred described pulping stage of preparation method of refractory fibre of the present invention is: by Al
2o
3with SiO
2material powder in molar ratio 3:2.12 ~ 2.20 is dissolved in solution, stirs.
In the step of the preferred described slurrying of preparation method of refractory fibre of the present invention, described Al
2o
3with SiO
2the average grain diameter of material powder all at 10 μm ~ 50 μm, preferably 10 μm ~ 25 μm further.
In the step of the preferred described slurrying of preparation method of refractory fibre of the present invention, PVA and PVB accounts for 15 ~ 20% of mixed solution gross weight.
In the step of the preferred described slurrying of preparation method of refractory fibre of the present invention, the weight ratio of PVA and PVB is 1:3 ~ 5.
The preferred described diluent of preparation method of refractory fibre of the present invention is ethanol or propyl alcohol.
The preferred described spinning process of preparation method of refractory fibre of the present invention is: slurrying gained slurries are placed in device for spinning, are heated to 100 DEG C ~ 200 DEG C, and insulation 0.5 ~ 1h, carries out spinning with the speed of 20 ~ 400m/min subsequently, obtain precursor.
The preferred described heat treatment step of preparation method of refractory fibre of the present invention is that spinning gained precursor is warming up to 1460 DEG C ~ 1550 DEG C under vacuum, process 0.5 ~ 10h.
The present invention's preferred technical scheme is:
A preparation method for refractory fibre, comprises slurrying, spinning and heat treated step,
1. slurrying: by Al
2o
3with SiO
2material powder in molar ratio 3:2.05 ~ 2.25 is dissolved in mixed solution, stirs,
Wherein, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 1 μm ~ 100 μm; Described mixed solution is the solution that PVA, PVB and diluent form, and wherein PVA and PVB accounts for the weight ratio of 10 ~ 35%, PVA and PVB of mixed solution gross weight is 1:2 ~ 10;
2. spinning: slurrying gained slurries are placed in device for spinning, is heated to 100 DEG C ~ 200 DEG C, and insulation 0.5 ~ 1h, carries out spinning with the speed of 20 ~ 400m/min subsequently, obtain precursor.
3. heat treatment: spinning gained precursor is warming up to 1460 DEG C ~ 1550 DEG C under vacuum, process 0.5 ~ 10h.
The invention has the beneficial effects as follows: the preparation method of refractory fibre of the present invention, the method with the mixed solution of PVA and PVB for additive, adopt melt spinning method to carry out spinning, effectively improve the volatilization situation of additive, reduce the surface roughness of gained fiber.Meanwhile, due to the pulp furnish having selected silica excessive, raw materials used granularity is declined, has saved production cost.
Detailed description of the invention
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
1. slurrying: by Al
2o
3with SiO
2material powder in molar ratio 3:2.05 is dissolved in mixed solution, stirs,
Wherein, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 20 μm; Described mixed solution is the solution that PVA, PVB and ethanol form, and wherein PVA and PVB accounts for the weight ratio of 17%, PVA and PVB of mixed solution gross weight is 1:2;
2. spinning: slurrying gained slurries are placed in device for spinning, are heated to 120 DEG C, insulation 1h, carries out spinning with the speed of 50m/min subsequently, obtains precursor.
3. heat treatment: spinning gained precursor is warming up to 1550 DEG C under vacuum, process 3h.
Gained fiber is even, surface smoothing, and diameter is 30 μm.
Embodiment 2
1. slurrying: by Al
2o
3with SiO
2material powder in molar ratio 3:2.2 is dissolved in mixed solution, stirs,
Wherein, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 50 μm; Described mixed solution is the solution that PVA, PVB and propyl alcohol form, and wherein PVA and PVB accounts for the weight ratio of 30%, PVA and PVB of mixed solution gross weight is 1:10;
2. spinning: slurrying gained slurries are placed in device for spinning, are heated to 120 DEG C, insulation 1h, carries out spinning with the speed of 50m/min subsequently, obtains precursor.
3. heat treatment: spinning gained precursor is warming up to 1530 DEG C under vacuum, process 3h.
Gained fiber is even, surface smoothing, and diameter is 35 μm.
Claims (9)
1. a preparation method for refractory fibre, comprises slurrying, spinning and heat treated step, it is characterized in that: the step of described slurrying is: by Al
2o
3with SiO
2material powder in molar ratio 3:2.05 ~ 2.25 is dissolved in mixed solution, stirs,
Wherein, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 1 μm ~ 100 μm; Described mixed solution is the solution that PVA, PVB and diluent form, and wherein PVA and PVB accounts for the weight ratio of 10 ~ 35%, PVA and PVB of mixed solution gross weight is 1:2 ~ 10.
2. method according to claim 1, is characterized in that: described pulping stage is: by Al
2o
3with SiO
2material powder in molar ratio 3:2.12 ~ 2.20 is dissolved in solution, stirs.
3. method according to claim 1, is characterized in that: in the step of described slurrying, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 10 μm ~ 50 μm.
4. method according to claim 3, is characterized in that: in the step of described slurrying, described Al
2o
3with SiO
2the average grain diameter of material powder is all at 10 μm ~ 25 μm.
5. method according to claim 1, is characterized in that: in the step of described slurrying, and PVA and PVB accounts for 15 ~ 20% of mixed solution gross weight.
6. method according to claim 1, is characterized in that: in the step of described slurrying, and the weight ratio of PVA and PVB is 1:3 ~ 5.
7. method according to claim 1, is characterized in that: described diluent is ethanol or propyl alcohol.
8. method according to claim 1, is characterized in that: described spinning process is: slurrying gained slurries are placed in device for spinning, is heated to 100 DEG C ~ 200 DEG C, and insulation 0.5 ~ 1h, carries out spinning with the speed of 20 ~ 400m/min subsequently, obtain precursor.
9. method according to claim 1, is characterized in that: described heat treatment step is, spinning gained precursor is warming up to 1460 DEG C ~ 1550 DEG C under vacuum, process 0.5 ~ 10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653648.4A CN104695053A (en) | 2013-12-05 | 2013-12-05 | Preparation method of fireproof fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653648.4A CN104695053A (en) | 2013-12-05 | 2013-12-05 | Preparation method of fireproof fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104695053A true CN104695053A (en) | 2015-06-10 |
Family
ID=53342579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653648.4A Pending CN104695053A (en) | 2013-12-05 | 2013-12-05 | Preparation method of fireproof fibers |
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| CN (1) | CN104695053A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435835A (en) * | 2016-08-30 | 2017-02-22 | 江苏南山冶金机械制造有限公司 | Preparing method of refractory fiber used for high-temperature furnace roller |
| CN107177904A (en) * | 2017-05-17 | 2017-09-19 | 长兴县煤山工业炉料有限公司 | A kind of wear-resisting aluminosilicate refractory fiber |
| CN107190363A (en) * | 2017-05-17 | 2017-09-22 | 长兴县煤山工业炉料有限公司 | A kind of aluminosilicate refractory fiber of high intensity |
| CN109516765A (en) * | 2017-09-19 | 2019-03-26 | 宜兴市远洋船舶材料有限公司 | A kind of ceramic wool |
-
2013
- 2013-12-05 CN CN201310653648.4A patent/CN104695053A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435835A (en) * | 2016-08-30 | 2017-02-22 | 江苏南山冶金机械制造有限公司 | Preparing method of refractory fiber used for high-temperature furnace roller |
| CN107177904A (en) * | 2017-05-17 | 2017-09-19 | 长兴县煤山工业炉料有限公司 | A kind of wear-resisting aluminosilicate refractory fiber |
| CN107190363A (en) * | 2017-05-17 | 2017-09-22 | 长兴县煤山工业炉料有限公司 | A kind of aluminosilicate refractory fiber of high intensity |
| CN109516765A (en) * | 2017-09-19 | 2019-03-26 | 宜兴市远洋船舶材料有限公司 | A kind of ceramic wool |
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Application publication date: 20150610 |