CN104370450A - Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure - Google Patents
Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure Download PDFInfo
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- CN104370450A CN104370450A CN201310348905.3A CN201310348905A CN104370450A CN 104370450 A CN104370450 A CN 104370450A CN 201310348905 A CN201310348905 A CN 201310348905A CN 104370450 A CN104370450 A CN 104370450A
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- China
- Prior art keywords
- ultra
- glass fibre
- centrifugal glass
- fine
- fine centrifugal
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Classifications
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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
- C03B37/005—Manufacture of flakes
-
- 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
- C03B37/06—Manufacture of glass fibres or filaments by blasting or blowing molten glass, e.g. for making staple fibres
Abstract
The invention discloses a preparation method of a superfine centrifugal glass fiber dry-process core material with an ultra-layer structure. The dry-process core material is prepared by the following steps: taking superfine centrifugal glass fibers, which are prepared through a centrifugal blowing method, as the raw materials; and then subjecting the prepared superfine centrifugal glass fibers to annular air-flow cutting, negative-pressure wind attraction, deceleration in Venturi tube, fiber collecting, thermal pressurizing, and cutting so as to obtain the superfine centrifugal glass fiber dry-process core material with an ultra-layer structure. The production technology is simple, the preparation method can be easily applied to industrialization, and the heat conductivity coefficient of the core material can reach 0.015 W/(m.K)(20 DEG C).
Description
Technical field
The present invention relates to a kind of fiber glass core material, preparation method, be specifically related to a kind of super Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method.
Background technology
Vacuum heat-insulating plate is based on vacuum insulation principle, by improving vacuum tightness in plate to greatest extent and the material of filling porous low thermal conductivity and realize thermal insulation, being widely used in the fields such as refrigerator, refrigerator, thermal container, building heat preservation, is be incubated heat-insulating property best material at present.Vacuum heat-insulating plate is primarily of core, encapsulating film material and gas adsorption material composition, and wherein core is the supporter of vacuum heat-insulating plate, and having the features such as porosity is high, thermal conductivity is low, is the core texture of vacuum heat-insulating plate.Therefore the quality of core quality has become one of deciding factor of vacuum heat-insulating plate heat-insulating property.
Chinese patent CN102062277B discloses a kind of vacuum insulated panel produced from superfine glass wool with wet process and preparation method thereof.Core material of vacuum heat insulation plate described in this invention is wet superfine glass wool, and this core is through preparing wet superfine glass wool core by glass fibre making beating-cotton picking-hot pressing-cutting-drying.
Chinese patent CN201487481U discloses a kind of vacuum insulation panel.Vacuum insulation panel described in this invention adopts wet method super-fine glass fibre cotton to do core.
Chinese patent CN102330871A discloses a kind of core material of vacuum heat insulation plate and preparation method thereof.The glass fibre cotton that this patent adopts 30% centrifuging to produce and the glass fibre cotton that 70% flame method is produced as core material of vacuum heat insulation plate raw material, through making beating, dilution, online, the sizing of dehydration forming pressure roller, negative pressure of vacuum dehydration, dry, cooling, cutting prepares core material of vacuum heat insulation plate.
The domestic core based on glass fibre mostly adopts wet processing shaping at present, this technique and paper technology similar, all in an acidic solution fiber to be broken into slurry, then through collecting, dehydration, could be shaping after the series of processes such as dry.Process is complicated, lengthy and tedious, and production cost is high.
Chinese patent CN103058526A discloses a kind of glass wool for dry vacuum insulated panel core material and production method thereof.The patent provides the production method of the glass wool for dry vacuum insulated panel core material, but do not illustrate how to prepare dry method core.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provides a kind of super Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, use the method can prepare the dry method core that production process is simple, heat-proof quality is excellent.
The technical scheme adopted for realizing object of the present invention is: one of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that with ultra-fine centrifugal glass fibre for raw material.
Described one surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that the step comprising following order:
(1) centrifugal injection method is adopted to prepare ultra-fine centrifugal glass fibre;
(2) the above-mentioned ultra-fine centrifugal glass fibre of annular steam cutting is adopted;
(3) the ultra-fine centrifugal glass fibre after utilizing negative pressure wind to attract cutting;
(4), after the ultra-fine centrifugal glass fibre after cutting being passed into Venturi tube, namely fiber is laid on cotton collecting machine becomes super Rotating fields ultra-fine centrifugal glass fibre dry method core.
One of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that described centrifugal injection method each spinning head glass metal stream plume amount is 30kg/h ~ 180kg/h, prepare the ultra-fine centrifugal glass fibre of 2 ~ 4 μm with the glass metal stream stock of low discharge.
One of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, and it is characterized in that described annular steam cutting angle is 30 ~ 75 °, flow is 0.1 ~ 0.8Nm
3/ h.
One of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that described negative pressure wind frequency is 20 ~ 50Hz.
One of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that in described Venturi tube, aperture is 130mm ~ 400mm, lower aperture is 650mm ~ 8000mm, length is 1200mm ~ 12000mm, and under Venturi tube, aperture is 3 ~ 50 with the ratio in upper aperture.
One of the present invention surpasses Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, it is characterized in that the speed of descending slowly and lightly when ultra-fine centrifugal glass fibre leaves Venturi tube is 1 ~ 15m/s.
Beneficial effect
The beneficial effect that the present invention compared with prior art has is: the method production technique is simple, be easy to industrialization, and the core Fibre diameter of preparation is 2 ~ 4 μm, length-to-diameter ratio is 1000 ~ 4000, core interlayer is super Rotating fields, close to parallel arrangement between each layer, core thermal conductivity can reach 0.015W/ (mK) (20 DEG C) ~ 0.03W/ (mK) (20 DEG C).
Accompanying drawing explanation
Fig. 1 is that the present invention surpasses Rotating fields beta glass fibre dry method core preparation process schematic diagram.
Number in the figure 30 is glass metal, and 40 is centrifugal pan, and 50 is annular steam, and 60 is Venturi tube, and 70 is cotton collecting machine, and 80 is negative pressure wind, and 31 is centrifugal glass fibre, and 32 is super leafing heart glass fibre cotton.
Embodiment
Below in conjunction with specific examples, 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.
Embodiment 1
A kind of super Rotating fields ultra-fine centrifugal glass fibre dry method core.It is cotton with flow to be that the centrifugal injection method of 120kg/h prepares ultra-fine centrifugal glass fibre, and this average fibre diameter is 3.2 μm.Ultra-fine centrifugal glass fibre is in dropping process, and the annular steam cutting beta glass fibre below spinning head, air-flow cutting angle is 45 °, and air flow rate is 0.3Nm
3/ h, Fiber Aspect Ratio is 2500.The cotton attraction due to wire drawing drawing-off wind, self gravitation and negative pressure wind (30Hz) of cut centrifugal glass fibre, descend slowly and lightly on cotton collecting machine downwards through Venturi tube, wherein in Venturi tube, aperture is 250mm, lower aperture is 1000mm, length is 3000mm, and the glass fibre cotton speed of descending slowly and lightly is 3.2m/s.Core is through hot pressing with after cutting, and core thermal conductivity is 0.025W/ (mK) (20 DEG C), and the heat conductivity of vacuum insulation panel of preparation is 0.0025W/ (mK).
Embodiment 2
A kind of super Rotating fields ultra-fine centrifugal glass fibre dry method core.It is cotton with flow to be that the centrifugal injection method of 80kg/h prepares ultra-fine centrifugal glass fibre, and this average fibre diameter is 2.8 μm.Ultra-fine centrifugal glass fibre is in dropping process, and the annular steam cutting beta glass fibre below spinning head, air-flow cutting angle is 45 °, and air flow rate is 0.5Nm
3/ h, Fiber Aspect Ratio is 2000.The cotton attraction due to wire drawing drawing-off wind, self gravitation and negative pressure wind (45Hz) of cut centrifugal glass fibre, descend slowly and lightly on cotton collecting machine downwards through Venturi tube, wherein in Venturi tube, aperture is 250mm, lower aperture is 1500mm, length is 3500mm, and the glass fibre cotton speed of descending slowly and lightly is 2.8m/s.Core is through hot pressing with after cutting, and core thermal conductivity is 0.02W/ (mK) (20 DEG C), and the heat conductivity of vacuum insulation panel of preparation is 0.002W/ (mK).
Above are only single embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading the scope of protection of the invention.In every case be the content not departing from technical solution of the present invention, any type of simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (8)
1. a super Rotating fields ultra-fine centrifugal glass fibre dry method core preparation method, is characterized in that with ultra-fine centrifugal glass fibre for raw material.
2. a super Rotating fields ultra-fine centrifugal glass fibre dry method core, is characterized in that the step comprising following order:
(1) centrifugal injection method is adopted to prepare ultra-fine centrifugal glass fibre;
(2) the above-mentioned ultra-fine centrifugal glass fibre of annular steam cutting is adopted;
(3) the ultra-fine centrifugal glass fibre after utilizing negative pressure wind vertically downward to attract cutting;
(4), after the ultra-fine centrifugal glass fibre after cutting enters Venturi tube, ultra-fine centrifugal glass fibre is laid in cotton collecting machine;
(5) namely the ultra-fine centrifugal glass fibre be laid on cotton collecting machine becomes super Rotating fields ultra-fine centrifugal glass fibre dry method core through hot pressing, cutting process.
3. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, is characterized in that centrifugal injection method each spinning head glass metal stream plume amount is 30kg/h ~ 180kg/h.
4. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, is characterized in that the ultra-fine centrifugal glass fibre diameter prepared is 2 μm ~ 4 μm.
5. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, it is characterized in that annular steam cutting angle is 30 ~ 75 °, flow is 0.1 ~ 0.8Nm
3/ h.
6. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, is characterized in that negative pressure wind frequency is 20 ~ 50Hz.
7. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, it is characterized in that in Venturi tube, aperture is 130mm ~ 400mm, lower aperture is 650mm ~ 8000mm, and length is 1200mm ~ 12000mm, and under Venturi tube, aperture is 3 ~ 50 with the ratio in upper aperture.
8. super Rotating fields according to claim 2 ultra-fine centrifugal glass fibre dry method core, is characterized in that the speed of descending slowly and lightly when ultra-fine centrifugal glass fibre leaves Venturi tube is 1 ~ 15m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348905.3A CN104370450A (en) | 2013-08-12 | 2013-08-12 | Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348905.3A CN104370450A (en) | 2013-08-12 | 2013-08-12 | Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure |
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| Publication Number | Publication Date |
|---|---|
| CN104370450A true CN104370450A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310348905.3A Pending CN104370450A (en) | 2013-08-12 | 2013-08-12 | Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877911A (en) * | 1972-09-13 | 1975-04-15 | Owens Corning Fiberglass Corp | Method and apparatus for producing fibers |
| CN101857394A (en) * | 2010-05-11 | 2010-10-13 | 太仓宏大方圆电气有限公司 | Production method of superfine glass wool product |
| CN102330475A (en) * | 2011-07-13 | 2012-01-25 | 苏州维艾普新材料有限公司 | Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof |
| CN103058526A (en) * | 2013-01-11 | 2013-04-24 | 成都瀚江新型建筑材料有限公司 | Glass wool for dry vacuum insulated panel core material and production method thereof |
-
2013
- 2013-08-12 CN CN201310348905.3A patent/CN104370450A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877911A (en) * | 1972-09-13 | 1975-04-15 | Owens Corning Fiberglass Corp | Method and apparatus for producing fibers |
| CN101857394A (en) * | 2010-05-11 | 2010-10-13 | 太仓宏大方圆电气有限公司 | Production method of superfine glass wool product |
| CN102330475A (en) * | 2011-07-13 | 2012-01-25 | 苏州维艾普新材料有限公司 | Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof |
| CN103058526A (en) * | 2013-01-11 | 2013-04-24 | 成都瀚江新型建筑材料有限公司 | Glass wool for dry vacuum insulated panel core material and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 曲通馨等: "《绝热材料与绝热工程实用手册》", 31 July 1998, 中国建材工业出版社 * |
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Application publication date: 20150225 |