CN102330871A - Vacuum heat insulation plate core material and manufacturing method thereof - Google Patents
Vacuum heat insulation plate core material and manufacturing method thereof Download PDFInfo
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- CN102330871A CN102330871A CN201110195148A CN201110195148A CN102330871A CN 102330871 A CN102330871 A CN 102330871A CN 201110195148 A CN201110195148 A CN 201110195148A CN 201110195148 A CN201110195148 A CN 201110195148A CN 102330871 A CN102330871 A CN 102330871A
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- glass fibre
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Abstract
The invention discloses a manufacturing method of a vacuum heat insulation plate core material, which specifically comprises the steps that: glass fiber cotton which is manufactured through a centrifugation method and a flame method is pulped, diluted, applied onto a mesh, dewatered and formed, rolled and formed, dewatered in vacuum negative pressure, dried, cooled and cut. According to the invention, the glass fiber cotton which is manufactured through the 30 percent centrifugation method and the glass fiber cotton which is manufactured through the 70 percent flame method serve as the raw material of the vacuum heat insulation plate core material, the heat transfer coefficient of the manufactured vacuum heat insulation plate core material is 0.0025W/m.k to 0.004 W/m.k, the heat insulation coefficient of the heat insulation plate is 0.0005 W/m.k higher than that of the vacuum heat insulation plate core material which adopts the glass fiber cotton manufactured through the 100 percent flame method as the raw material, so that the impact on the heat insulation effect is small, and the manufacturing cost of the vacuum heat insulation plate core material is greatly saved; and the thickness of the core material is 0.5mm to 8mm, and the thickness difference from that of the vacuum heat insulation plate core material which adopts the glass fiber cotton manufactured through the 100 percent flame method as the raw material is not big.
Description
Technical field
The present invention relates to a kind of core material of vacuum heat insulation plate and preparation method thereof, be specifically a kind of be the making method of raw material with the glass fibre cotton.
Background technique
At present, vacuum heat-insulating plate has applied in the every field, and it has satisfied customer requirement with the characteristic of energy-conservation, low-carbon (LC), environmental protection, safety.Can know through investigation and practical operation; Selecting for use with making method of the inner core of vacuum heat-insulating plate is very big to its each item performance impact; Core is generally selected porous media material for use, like aerogel, microvoid polyurethane, SiO 2 powder, asbestos fiber, glass fibre etc.The against vacuum insulated panel core material must possess following four specific characters: 1, under the high vacuum negative pressure state, vacuum heat-insulating plate is had supporting effect, prevent that vacuum heat-insulating plate from shrinking, caving in; 2, to reduce heat conducting generation as much as possible, prolong heat conducting path; 3, must possess open-celled structure, gas can be discharged with prestissimo under negative pressure state; 4, material need possess and prevents thermal-radiating performance.
At present because of different types of vacuum heat-insulating plate application is different, the selection of its core is difference to some extent also, requires to hinder good in thermal property for household electrical appliances insulation, building exterior wall heat preserving etc.; Thermal conductivity is low; The thermal conductivity of the exhausted plate of present most of vacuum is all between 0.01-0.02W/m.K, and core material of vacuum heat insulation plate is bulky, and thickness is generally between 1cm-5cm; After being used for household electrical appliances insulations, building exterior wall heat preserving, space capable of using and the insulation life-span of having reduced household electrical appliances, building are short.So, hope that the attenuation of vacuum insulation plate thickness, thermal conductivity reduce to household electrical appliances and building exterior wall heat preserving, reduce the cost of production of vacuum heat-insulating plate simultaneously, these are real to be the current problem that needs research.
Summary of the invention
Goal of the invention: the objective of the invention is in order to overcome the deficiency of existing technology, low core material of vacuum heat insulation plate such as a kind of cost that is used for household electrical appliances insulation, building exterior wall heat preserving etc. and preparation method thereof is provided.
Technological scheme: in order to solve the problems of the technologies described above, the invention provides a kind of is 3.5-5um by diameter, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, and the glass fibre cotton that length is produced for the 1-5mm flame method is mixed and made into; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%.
Because what adopt during centrifuge method is produced all is discarded cullet; Cost of material is low; The diameter 3.5-5um that produces simultaneously, the glass fibre cotton of length 5-20mm use the relative cost of manufacturing mechanism low, so the glass fibre cotton cost that obtains is low; Thereby adopt diameter 3.5-5um, the vacuum heat-insulating plate cost that the glass fibre cotton of length 5-20mm produces is low.
And the glass fibre cotton that adopts flame method to make, diameter is thin, and length is short, and the glass fibre cotton density that obtains is bigger, and the core material of vacuum heat insulation plate thermal conductivity of processing is lower, but the glass fibre cotton manufacturing cost that adopts flame method to produce is high.
The concrete steps that the invention also discloses a kind of this making method of manufacture method of core material of vacuum heat insulation plate are following:
(1) cut-off directly is 3.5-5um, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, the glass fibre cotton that length is produced for the 1-5mm flame method; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%;
(2) glass fibre cotton is added to send into after water stirs join stock tank dilution, diluted concentration is to 0.3-0.6%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
The slurry that (4) will hold in the stock tank is sent into breast box, adopts forming net to the glass fibre cotton moulding of dewatering then, processes glass fibre cotton core blank;
(5) adopt pressure roller to glass fibre core blank carry out vertically, lateral surfaces is smooth, simultaneously the thickness of glass fibre core blank adjusted, and makes glass fibre core blank thickness unanimity;
(6) the glass fibre core blank that will accomplish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 60%-70%;
(7) the glass fibre core blank that will remove the moisture of 60%-70% is then sent into baking and curing in the roasting chamber, and baking the temperature inside the box is controlled at 250-400 degree centigrade, and stoving time is 3-15 minute; After accomplishing, baking forms the whole plate of glass fibre core;
(8) then the whole plate of glass fibre core is cooled to normal temperature;
(9) according to customer requirement the whole plate of glass fibre core is carried out cutting, the glass fibre core of the standard that completes.
Glass fibre core blank thickness is 0.5-30mm in the step described in the present invention (5).Because making the glass fibre cotton of central layer employing is that diameter is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuge method is so glass fibre core blank optimum thickness is 0.5-8mm.
When (4) forming net dewaters to glass fibre cotton in the step described in the present invention, the speed of forming net be 2-5 rice/minute.Adopt in the glass fibre cotton core blank that this speed can effectively guarantee to produce through forming net glass fibre cotton density even; Integral thickness is even relatively; Do not occur high low situation on one side on one side, improved the core material of vacuum heat insulation plate end product quality of producing.
Beneficial effect: core material of vacuum heat insulation plate according to the invention has the following advantages:
1, the glass fibre cotton that glass fibre cotton that employing 30% centrifuge method is produced among the present invention and 70% flame method are produced is as the core material of vacuum heat insulation plate raw material; The core material of vacuum heat insulation plate thermal conductivity of producing is at 0.0025-0.004W/m.k; Its heat insulating coefficient with respect to the glass fibre cotton that adopts 100% flame method to produce be the core material of vacuum heat insulation plate of raw material high 0.0005 W/m.k; The heat insulation effect influence is little, the manufacture cost of but having practiced thrift core material of vacuum heat insulation plate greatly; And the thickness of core is 0.5-8mm, and thickness and the glass fibre cotton that adopts 100% flame method to produce are that the core material of vacuum heat insulation plate of raw material is more or less the same.
2, core material of vacuum heat insulation plate according to the invention has open-celled structure, can satisfy the quick exhaust performance that core material of vacuum heat insulation plate possesses.
3, that the glass fibre cotton that centrifuge method is produced among the present invention has is fire-retardant, sound-absorbing, characteristic nontoxic, environmental protection make the vacuum heat-insulating plate using scope of producing extensive.
4, process for integrally manufacturing of the present invention is simple, adapts to industrialized production.
Embodiment
Below in conjunction with specific embodiment; Further illustrate the present invention; Should understand these embodiments only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims to the modification of the various equivalent form of values of the present invention and limit.
Embodiment
A kind of core material of vacuum heat insulation plate, it is 3.5-5um by diameter, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, and the glass fibre cotton that length is produced for the 1-5mm flame method is mixed and made into; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%.
A kind of manufacture method of core material of vacuum heat insulation plate, concrete steps are following:
(1) cut-off directly is 3.5-5um, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, the glass fibre cotton that length is produced for the 1-5mm flame method; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%;
(2) glass fibre cotton is added to send into after water stirs join stock tank dilution, diluted concentration to 0.4%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
The slurry that (4) will hold in the stock tank is sent into breast box, adopts forming net to the glass fibre cotton moulding of dewatering then, processes glass fibre cotton core blank; When forming net dewatered to glass fibre cotton in this step, the speed of forming net was 2 meters/minute;
(5) adopt the twice pressure roller to glass fibre core blank increase the weight of to compress into row vertically, lateral surfaces is smooth, simultaneously the thickness of glass fibre core blank adjusted, and makes glass fibre core blank thickness be adjusted into 3mm;
(6) the glass fibre core blank that will accomplish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 60%, makes glass fibre core blank water content be controlled at 40%;
(7) the glass fibre core blank that will remove 60% moisture is then sent into baking and curing in the roasting chamber, and baking the temperature inside the box is controlled at 350 degrees centigrade, and stoving time is 8 minutes; After accomplishing, baking forms the whole plate of glass fibre core;
(8) then the whole plate of glass fibre core is cooled to normal temperature;
(9) according to customer requirement the whole plate of glass fibre core is carried out cutting, cut into the square core material of vacuum heat insulation plate finished product of 5mm X 5mm.
Claims (4)
1. core material of vacuum heat insulation plate, it is characterized in that: it is 3.5-5um by diameter, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, and length is mixed and made into for the glass fibre cotton of 1-5mm flame method production; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%.
2. manufacture method of core material of vacuum heat insulation plate, it is characterized in that: the concrete steps of this making method are following:
(1) cut-off directly is 3.5-5um, and glass fibre cotton and diameter that length is produced for the 5-20mm centrifuge method are 1.5-2.5um, the glass fibre cotton that length is produced for the 1-5mm flame method; The glass fibre cotton that said flame method is produced accounts for 70%, and the glass fibre cotton that said centrifuge method is produced accounts for 30%;
(2) glass fibre cotton is added to send into after water stirs join stock tank dilution, diluted concentration is to 0.3-0.6%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
The slurry that (4) will hold in the stock tank is sent into breast box, adopts forming net to the glass fibre cotton moulding of dewatering, glass fibre cotton core blank then;
(5) adopt pressure roller to glass fibre core blank carry out vertically, lateral surfaces is smooth, simultaneously the thickness of glass fibre core blank adjusted, and makes glass fibre core blank thickness unanimity;
(6) the glass fibre core blank that will accomplish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 60%-70%;
(7) the glass fibre core blank that will remove the moisture of 50%-65% is then sent into baking and curing in the roasting chamber, and baking the temperature inside the box is controlled at 250-400 degree centigrade, and stoving time is 3-15 minute; After accomplishing, baking forms the whole plate of glass fibre core;
(8) then the whole plate of glass fibre core is cooled to normal temperature;
(9) according to customer requirement the whole plate of glass fibre core is carried out cutting, the glass fibre core of the standard that completes.
3. a kind of manufacture method of core material of vacuum heat insulation plate according to claim 2 is characterized in that: glass fibre core blank thickness is 0.5-8mm in the said step (5).
4. a kind of manufacture method of core material of vacuum heat insulation plate according to claim 2 is characterized in that: when (4) forming net dewaters to glass fibre cotton in the said step, the speed of forming net be 2-5 rice/minute.
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| CN201110195148A CN102330871A (en) | 2011-07-13 | 2011-07-13 | Vacuum heat insulation plate core material and manufacturing method thereof |
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| CN201110195148A CN102330871A (en) | 2011-07-13 | 2011-07-13 | Vacuum heat insulation plate core material and manufacturing method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620114A (en) * | 2012-04-10 | 2012-08-01 | 陈照峰 | Microstructure bird nest-similar vacuum insulated panel core material and preparation method for vacuum insulated panel core |
| CN102720920A (en) * | 2012-06-08 | 2012-10-10 | 青岛科瑞新型环保材料有限公司 | Vacuum insulation board core material and manufacture method of vacuum insulation board core material |
| CN102809022A (en) * | 2012-08-24 | 2012-12-05 | 安徽科瑞克保温材料有限公司 | Manufacturing method of heat insulating plate core material |
| CN103114502A (en) * | 2013-01-25 | 2013-05-22 | 重庆再升科技股份有限公司 | Method for preparing high-grade low-temperature bottle insulating paper |
| CN103196007A (en) * | 2013-04-03 | 2013-07-10 | 常州山由帝武节能新材料制造有限公司 | Vacuum insulated panel core material and manufacturing method thereof |
| CN103542229A (en) * | 2012-07-16 | 2014-01-29 | 苏州维艾普新材料有限公司 | Inorganic composite core material for vacuum insulation panel and manufacturing method thereof |
| CN104132220A (en) * | 2014-08-18 | 2014-11-05 | 李载润 | Vacuum insulation panel for active absorbent and manufacturing method for vacuum insulation panel |
| CN104295860A (en) * | 2014-08-18 | 2015-01-21 | 李载润 | Vacuum thermal insulation panel of etching glass fiber |
| CN110792879A (en) * | 2019-09-26 | 2020-02-14 | 安徽百特新材料科技有限公司 | Vacuum heat-insulating plate without fear of surface damage and processing technology |
| CN110792880A (en) * | 2019-09-26 | 2020-02-14 | 安徽百特新材料科技有限公司 | Vacuum heat insulation plate with mounting holes and without fear of surface damage and processing technology |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102620114A (en) * | 2012-04-10 | 2012-08-01 | 陈照峰 | Microstructure bird nest-similar vacuum insulated panel core material and preparation method for vacuum insulated panel core |
| CN102720920A (en) * | 2012-06-08 | 2012-10-10 | 青岛科瑞新型环保材料有限公司 | Vacuum insulation board core material and manufacture method of vacuum insulation board core material |
| CN103542229A (en) * | 2012-07-16 | 2014-01-29 | 苏州维艾普新材料有限公司 | Inorganic composite core material for vacuum insulation panel and manufacturing method thereof |
| CN102809022A (en) * | 2012-08-24 | 2012-12-05 | 安徽科瑞克保温材料有限公司 | Manufacturing method of heat insulating plate core material |
| CN103114502A (en) * | 2013-01-25 | 2013-05-22 | 重庆再升科技股份有限公司 | Method for preparing high-grade low-temperature bottle insulating paper |
| CN103114502B (en) * | 2013-01-25 | 2016-01-20 | 重庆再升科技股份有限公司 | A kind of preparation method of high-grade low-temperature bottle sheathing paper |
| CN103196007A (en) * | 2013-04-03 | 2013-07-10 | 常州山由帝武节能新材料制造有限公司 | Vacuum insulated panel core material and manufacturing method thereof |
| CN104132220A (en) * | 2014-08-18 | 2014-11-05 | 李载润 | Vacuum insulation panel for active absorbent and manufacturing method for vacuum insulation panel |
| CN104295860A (en) * | 2014-08-18 | 2015-01-21 | 李载润 | Vacuum thermal insulation panel of etching glass fiber |
| CN110792879A (en) * | 2019-09-26 | 2020-02-14 | 安徽百特新材料科技有限公司 | Vacuum heat-insulating plate without fear of surface damage and processing technology |
| CN110792880A (en) * | 2019-09-26 | 2020-02-14 | 安徽百特新材料科技有限公司 | Vacuum heat insulation plate with mounting holes and without fear of surface damage and processing technology |
| CN110792879B (en) * | 2019-09-26 | 2021-01-26 | 安徽百特新材料科技有限公司 | Processing technology of vacuum heat insulation plate without fear of surface damage |
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Application publication date: 20120125 |