CN104500924B - A kind of vacuum heat-insulating plate and manufacture method thereof - Google Patents
A kind of vacuum heat-insulating plate and manufacture method thereof Download PDFInfo
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- CN104500924B CN104500924B CN201510002541.2A CN201510002541A CN104500924B CN 104500924 B CN104500924 B CN 104500924B CN 201510002541 A CN201510002541 A CN 201510002541A CN 104500924 B CN104500924 B CN 104500924B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
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Abstract
A kind of vacuum thermal insulation plate and preparation method thereof, described vacuum heat-insulating plate includes core and high-gas resistance composite membrane, is one or more layers at described core, and at least a part of which one layer is made up of centrifugal cotton.Vacuum heat-insulation plate effect of heat insulation of the present invention is more preferable, under equal thermal conductivity factor, can reach lower thickness, reduce cost, stop the dust harm to environment, and environment protecting is more preferable.
Description
Technical field
The invention belongs to building field, particularly relate to a kind of vacuum thermal insulation plate and manufacture method thereof, belong to E04B field.
Background technology
Existing vacuum thermal insulation plate is mainly constituted with internal insulated core material by being cladded with high resistant air film, and insulated core material typically uses the combinations such as conventional insulation material, glass fibre and aeroge to make, and shortcoming is that material cost is high, energy consumption height, not environmentally.
Summary of the invention
For the shortcoming of currently available technology, it is an object of the invention to provide a kind of vacuum thermal insulation plate and preparation method thereof, solve existing market product material cost high, the shortcoming that energy consumption is high.
To achieve these goals, technical scheme is as follows: a kind of vacuum heat-insulating plate, including core and high-gas resistance composite membrane, is one or more layers at described core, and at least a part of which one layer is made up of centrifugal cotton.
Preferably, wherein core can be divided into top regions, middle layer region, district of lower floor, and middle layer region is centrifugal cotton.
Preferably, its core is one layer.
Preferably, top regions and/or district of lower floor are made up of one or more in superfine glass cotton fiber plate, aluminosilicate fiberboard, centrifugally glass-wool plate, rock cotton board, textile fabric plate, waste paper pulpboard.
A kind of method manufacturing foregoing vacuum heat-insulating plate, comprises the steps:
(1) soak
Choose a certain amount of centrifugal cotton, centrifugal cotton is soaked in an acidic solution；
(2) slurry is formed
After soaking certain time, from acid solution, take out centrifugal cotton, put in pond with slurry, add water and be diluted, form slurry；
(3) dehydration forms blank core
Slurry is carried out dehydration forming, forms blank core；
(4) smooth
Use pressure roller, blank core surfaces is processed flat smooth；
(5) dry
Blank core is sent into drying in oven, is cooled to room temperature standby；
(6) cutting
The core dried is cut by dimensional requirement, is then combined with each other formation core material of vacuum heat insulation plate separately as core material of vacuum heat insulation plate or with other layers；
(7) core that step (6) is formed is put into put into high-gas resistance compound membrane bag, then by the way of vacuumizing, obtain vacuum heat-insulating plate.
Preferably, the pH value that in described step (1), the acid solution of configuration is is 2～5.
Preferably, the pH value that in described step (1), the acid solution of configuration is is 2.5-3.5.
Preferably, in described step (1), the soak time of centrifugal cotton is 8～45min, and temperature is 300 ~ 450 DEG C.
Preferably, in described step (2), the concentration of dilution is 0.3～1%.
Preferably, described acid solution is one or more in sulfuric acid or hydrochloric acid or phosphoric acid.
Compared with prior art, the vacuum thermal insulation core of the present invention has the advantage that
1) using centrifugal cotton as the core of vacuum heat-insulating plate, performance is high, and adiabatic coefficent has had large increase, makes the thickness of vacuum heat-insulating plate be substantially reduced.This cost of material is low, and vacuum heat-insulating plate overall cost reduces.Centrifugal cotton has fire-retardant, sound absorption function, can meet the requirement of asepsis environment-protecting.
2) core is divided into multilayer, i.e. adds the intensity of core, the replaceability of core can be increased again, i.e. when a certain layer of core is damaged, remainder layer can repeat again with.
3) provide the preparation method of a kind of centrifugal cotton core, with it, the core being especially suitable for vacuum heat-insulating plate can be produced, thus reduce the cost of vacuum heat-insulating plate.
Detailed description of the invention
A kind of vacuum heat-insulating plate, including core and high-gas resistance composite membrane, is one or more layers at described core, and at least a part of which one layer is made up of centrifugal cotton.
Preferably, wherein core can be divided into top regions, middle layer region, district of lower floor, and middle layer region is centrifugal cotton.
Preferably, its core is one layer, and thickness is 2mm.Core herein only arranges one layer, shows that core is made up of centrifugal cotton.
Preferably, centrifugal cotton average diameter is 2～4 μm.
Preferably, top regions and/or district of lower floor are made up of one or more in superfine glass cotton fiber plate, aluminosilicate fiberboard, centrifugally glass-wool plate, rock cotton board, textile fabric plate, waste paper pulpboard.
A kind of method manufacturing foregoing vacuum heat-insulating plate, comprises the steps:
(1) soak
Choose a certain amount of centrifugal cotton, centrifugal cotton is soaked in an acidic solution；
Soak with remove cellucotton produce in impurity, to obtain pure centrifugal cotton, strengthen centrifugal cotton chemical stability；
(2) slurry is formed
After soaking certain time, from acid solution, take out centrifugal cotton, put in pond with slurry, add water and be diluted, form slurry；
(3) dehydration forms blank core
Slurry is carried out dehydration forming, forms blank core；
(4) smooth
Use pressure roller, blank core surfaces is processed flat smooth；
(5) dry
Blank core is sent into drying in oven, is cooled to room temperature standby；
(6) cutting
The core dried is cut by dimensional requirement, is then combined with each other formation core material of vacuum heat insulation plate separately as core material of vacuum heat insulation plate or with other layers；
(7) core that step (6) is formed is put into put into high-gas resistance compound membrane bag, then by the way of vacuumizing, obtain vacuum heat-insulating plate.
In step (6), if core is one layer, then directly the core of drying is put in the high-gas resistance compound membrane bag of step (7), if core is multilayer, then according to the number of plies of core, core heap is folded, or bond by the way of binding agent bonds, form core material of vacuum heat insulation plate, then core material of vacuum heat insulation plate is put in the high-gas resistance compound membrane bag of step (7).
Preferably, the dehydration in step (3), take slurry is sent into flow box, then use forming net to its dehydration forming, form blank core.
Preferably, the speed of forming net is 5-8m/min.
Preferably, the pH value that in described step (1), the acid solution of configuration is is 2～5.
Preferably, the pH value that in described step (1), the acid solution of configuration is is 2.5-3.5, and the impurity contained by basic removing, the space making centrifugal cotton is unimpeded.
It is further preferred that the pH value that in stating step (1), the acid solution of configuration is is 2.8-3.2, thoroughly remove impurities, strengthen the chemical stability of centrifugal cotton.
Preferably, in described step (1), the soak time of centrifugal cotton is 8～45min, and temperature is 300 ~ 450 DEG C.
As preferably, soak time is 15～35min, and temperature is 350 ~ 400 DEG C.
As preferably, soak time is 22～28min, and temperature is 370 ~ 380 DEG C.
In this soak time and temperature range, it is ensured that thoroughly remove the impurity in fiber, and fully strengthen the chemical stability of centrifugal cotton.
Preferably, in described step (2), the concentration of dilution of acid is 0.3～1.2%, and this quantity is concentration in the slurry after residual acid dilute with water forms slurry in fiber.Preferably, for 0.5-0.8%.Under this concentration, it is ensured that will not be re-introduced into impurity during being diluted with water as slurry, the performance of fiber will not change again, does not have too much acid and remain in fiberboard after manufactured Board.
Preferably, described acid solution is one or more in sulfuric acid or hydrochloric acid or phosphoric acid.
As preferably, solution takes the mixture of sulfuric acid and hydrochloric acid, and wherein sulfuric acid volume ratio is 60-80%, and hydrochloric acid is 20-40%.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. the method manufacturing vacuum heat-insulating plate, described vacuum heat-insulating plate includes core and high-gas resistance composite membrane, is one or more layers at described core, and at least a part of which one layer is made up of centrifugal cotton；
It is characterized in that comprising the steps:
(1) soak
Choose a certain amount of centrifugal cotton, centrifugal cotton is soaked in an acidic solution；
(2) slurry is formed
After soaking certain time, from acid solution, take out centrifugal cotton, put in pond with slurry, add water and be diluted, form slurry；
(3) dehydration forms blank core
Slurry is carried out dehydration forming, forms blank core；
(4) smooth
Use pressure roller, blank core surfaces is processed flat smooth；
(5) dry
Blank core is sent into drying in oven, is cooled to room temperature standby；
(6) cutting
The core dried is cut by dimensional requirement, is then combined with each other formation core material of vacuum heat insulation plate separately as core material of vacuum heat insulation plate or with other layers；
(7) core that step (6) is formed is put into put into high-gas resistance compound membrane bag, then by the way of vacuumizing, obtain vacuum heat-insulating plate.
The method of manufacture vacuum heat-insulating plate the most according to claim 1, wherein core can be divided into top regions, middle layer region, district of lower floor, and middle layer region is centrifugal cotton.
The method of manufacture vacuum heat-insulating plate the most according to claim 1, its core is one layer.
The method of manufacture vacuum heat-insulating plate the most according to claim 2, it is characterized in that, top regions and/or district of lower floor are made up of one or more in superfine glass cotton fiber plate, aluminosilicate fiberboard, centrifugally glass-wool plate, rock cotton board, textile fabric plate, waste paper pulpboard.
Method the most according to claim 1, it is characterised in that: the pH value that in described step (1), the acid solution of configuration is is 2～5.
Method the most according to claim 5, it is characterised in that: the pH value that in described step (1), the acid solution of configuration is is 2.5-3.5.
Method the most according to claim 1, it is characterised in that: in described step (2), the concentration of dilution is 0.5～0.8%.
Method the most according to claim 1, it is characterised in that: described acid solution is one or more in sulfuric acid or hydrochloric acid or phosphoric acid.
Method the most according to claim 1, it is characterised in that: in described step (1), the soak time of centrifugal cotton is 8～45min.
Method the most according to claim 9, it is characterised in that: in described step (1), the soak time of centrifugal cotton is 22-28min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510002541.2A CN104500924B (en) | 2015-01-06 | 2015-01-06 | A kind of vacuum heat-insulating plate and manufacture method thereof |
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| CN201510002541.2A CN104500924B (en) | 2015-01-06 | 2015-01-06 | A kind of vacuum heat-insulating plate and manufacture method thereof |
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| CN104500924A CN104500924A (en) | 2015-04-08 |
| CN104500924B true CN104500924B (en) | 2016-09-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105650891B (en) * | 2015-04-28 | 2018-01-09 | 山东大学 | A kind of solar heat-preservation system of heat-insulating shield insulation |
| CN105155703A (en) * | 2015-09-22 | 2015-12-16 | 苏州维艾普新材料股份有限公司 | Preparation method of STP core materials |
| CN106884356A (en) * | 2017-02-15 | 2017-06-23 | 合肥华凌股份有限公司 | Core manufacture method, core and vacuum heat-insulating plate |
| CN115556440B (en) * | 2021-07-02 | 2024-01-05 | 青岛海尔电冰箱有限公司 | Acid treatment process of core material and vacuum insulation panel with acid treated core material |
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| CN202466870U (en) * | 2012-02-16 | 2012-10-03 | 昆山蓝胜建材有限公司 | Ultra-thin vacuum heat-isolation heat-insulation plate |
| CN102776808A (en) * | 2012-08-14 | 2012-11-14 | 苏州维艾普新材料有限公司 | Preparation method of arc vacuum thermal insulation plate core materials |
| CN202544156U (en) * | 2012-04-28 | 2012-11-21 | 青岛国创能源科技有限公司 | Novel insulation board |
| CN103807569A (en) * | 2012-11-12 | 2014-05-21 | 苏州维艾普新材料有限公司 | Ultra-thin laminated vacuum heat insulation plate core material and preparation method thereof |
| CN104373761A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Method of producing vacuum insulating plates from soaked centrifugal glass wool |
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2015
- 2015-01-06 CN CN201510002541.2A patent/CN104500924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202466870U (en) * | 2012-02-16 | 2012-10-03 | 昆山蓝胜建材有限公司 | Ultra-thin vacuum heat-isolation heat-insulation plate |
| CN202544156U (en) * | 2012-04-28 | 2012-11-21 | 青岛国创能源科技有限公司 | Novel insulation board |
| CN102776808A (en) * | 2012-08-14 | 2012-11-14 | 苏州维艾普新材料有限公司 | Preparation method of arc vacuum thermal insulation plate core materials |
| CN103807569A (en) * | 2012-11-12 | 2014-05-21 | 苏州维艾普新材料有限公司 | Ultra-thin laminated vacuum heat insulation plate core material and preparation method thereof |
| CN104373761A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Method of producing vacuum insulating plates from soaked centrifugal glass wool |
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Address after: 266112 Shandong City, Chengyang District, Qingdao, the streets of the streets of the Wangjiazhuang neighborhood of the community on the north side of the 500 meters Patentee after: Qingdao Kerui new environmental protection materials Group Co. Ltd. Address before: 266112 Shandong City, Chengyang District, Qingdao, the streets of the streets of the Wangjiazhuang neighborhood of the community on the north side of the 500 meters Patentee before: Qingdao Creek New Environmental Materials Co., Ltd. |
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Denomination of invention: Vacuum insulation panel and manufacture method thereof Effective date of registration: 20191217 Granted publication date: 20160907 Pledgee: Qingdao Datong Huixin Private Capital Management Co., Ltd Pledgor: Qingdao Kerui new environmental protection materials Group Co. Ltd. Registration number: Y2019370010045 |