CN102330475B - Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof - Google Patents

Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof Download PDF

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Publication number
CN102330475B
CN102330475B CN2011101951710A CN201110195171A CN102330475B CN 102330475 B CN102330475 B CN 102330475B CN 2011101951710 A CN2011101951710 A CN 2011101951710A CN 201110195171 A CN201110195171 A CN 201110195171A CN 102330475 B CN102330475 B CN 102330475B
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China
Prior art keywords
glass fibre
core
fibre core
performance
cotton
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CN2011101951710A
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Chinese (zh)
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CN102330475A (en
Inventor
周介明
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苏州维艾普新材料有限公司
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Publication of CN102330475A publication Critical patent/CN102330475A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/242Slab shaped vacuum insulation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/10Insulation, e.g. vacuum or aerogel insulation

Abstract

The invention discloses a method for manufacturing a vacuum insulation panel core material with high performance and low cost. The method comprises the following steps of: pulping glass fiber cotton which is produced by a centrifuge method; diluting; screening; performing dehydration molding; performing pressure roller sizing; performing vacuum negative pressure dehydration; drying; cooling; and cutting. In the manufacturing method, the glass fiber cotton which is completely produced by the centrifuge method is used as a raw material of the vacuum insulation panel core material with high performance and low cost, the coefficient of thermal conductivity of the produced vacuum insulation panel core is between 0.003 and 0.008 W/m.k, and the coefficient of heat insulation is greatly improved; the thickness of the panel core material is between 0.5 and 30 mm, and the thickness is thinner; and the glass fiber cotton with the diameter of 3.5 to 5 mu m and the length of 5 to 20 mm has low cost and low overall manufacturing cost, and the overall cost of the vacuum insulation panel is lowered.

Description

High-performance and low-cost core material of vacuum heat insulation plate and preparation method thereof
Technical field
The present invention relates to a kind of high-performance and low-cost 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 technology
At present, vacuum heat-insulating plate has applied in the various fields, and it has satisfied the requirement of client to type material with excellent specific properties such as energy-conservation, low-carbon (LC), environmental protection, safety.In order to obtain above-mentioned every characteristic, selecting for use with making method of the inner core of vacuum heat-insulating plate is very big to its influence, and core is generally selected porous media material for use, as aerogel, microvoid polyurethane, SiO 2 powder, mineral wool cotton, 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 role, 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 utmost dispatch under negative pressure state; 4, material need possess and prevents thermal-radiating performance.
At present core material of vacuum heat insulation plate is because the selection of material and making method different, the field of the vacuum heat-insulating plate utilization that different cores produces is also different, for being used for locker room's insulation, building exterior wall heat preservings etc. require the thermal resistance performance good, the material that thermal conductivity is low, the thermal conductivity of the exhausted plate of present most of vacuum is but all between 0.01-0.02W/m.K, and core material of vacuum heat insulation plate is bulky, thickness is generally between 1cm-5cm, be used for locker room's insulation, behind the building exterior wall heat preserving, under equal volume, not only dwindled the inside usable floor area of locker room and building, and made the insulation lost of life.For locker room and external wall, wish that the vacuum heat-insulating plate cost of use further reduces when dwindling the vacuum insulation plate thickness, lowering thermal conductivity in addition.
Summary of the invention
Goal of the invention: the objective of the invention is in order to overcome the deficiencies in the prior art, a kind of low core material of vacuum heat insulation plate of costs such as locker room's insulation, building exterior wall heat preserving and preparation method thereof that is used for is provided.
Technical scheme: in order to solve the problems of the technologies described above, the invention provides a kind of high-performance and low-cost core material of vacuum heat insulation plate, it is 3.5-5um by diameter, and the glass fibre cotton that length is produced for the 5-20mm centrifuging is made.Because what adopt during centrifuging is produced all is the depleted glass cullet, raw materials cost is low, produce diameter 3.5-5um simultaneously, the relative cost of using during the glass fibre cotton of length 5-20mm of production unit is low, so the glass fibre cotton cost that obtains is low, thereby the vacuum heat-insulating plate cost that adopts this glass fibre cotton to produce is also just very low.
The invention also discloses a kind of making method of high-performance and low-cost core material of vacuum heat insulation plate, the concrete steps of this making method are as follows:
(1) cut-off directly is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuging;
(2) glass fibre cotton is added send into after water stirs and join stock tank dilution, weaker concn is to 0.3%-1%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
(4) slurry that will hold in the stock tank is sent into head box, adopts forming net to the glass fibre cotton moulding of dewatering then, makes 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 finish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 50%-65%;
(7) the glass fibre core blank that will remove the moisture of 50%-65% is sent into baking and curing in the baking box, and baking the temperature inside the box is controlled at 300-450 degree centigrade, and storing time is 5-15 minute; After finishing, baking forms the whole plate of glass fibre core;
(8) 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).The glass fibre cotton of making the central layer employing is that diameter is 3.5-5um, and length is the glass fibre cotton that the 5-20mm centrifuging is produced, and glass fibre core blank optimum thickness is 0.5-30mm.
When (4) forming net dewatered to glass fibre cotton in the step described in the present invention, the speed of forming net was 5-8m/min.Adopt in the glass fibre cotton core blank that this speed can effectively guarantee to produce by 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 final product quality of producing.
The glass fibre cotton that centrifuging is produced among the present invention is to be main raw material to reclaim glass cullet, is equipped with feldspar, rhombspar, soda ash, borax, forms glass metal through high-temperature fusion, disperses the glass fibre cotton that stretches and form by the whizzer that runs up then.
Beneficial effect: kitchen of the present invention pad has the following advantages:
1, the glass fibre cotton that adopts the production of 100% centrifuging among the present invention is as high-performance and low-cost core material of vacuum heat insulation plate raw material, and the core material of vacuum heat insulation plate thermal conductivity of producing is at 0.003-0.008W/m.k, and coefficient of heat insulation improves greatly; And the thickness of core is 0.5-30mm, and it is thinner that thickness also becomes; While diameter 3.5-5um, the glass fibre cotton raw materials cost of length 5-20mm is low, and overall cost is low, has reduced the whole cost of vacuum heat-insulating plate.
2, adopt glass fibre cotton that 100% centrifuging produces as high-performance and low-cost core material of vacuum heat insulation plate raw material among the present invention, thereby make core have open-celled structure, can satisfy the quick exhaust performance that core material of vacuum heat insulation plate possesses.
3, adopt the glass fibre cotton of 100% centrifuging production as high-performance and low-cost core material of vacuum heat insulation plate raw material among the present invention, its Fibre diameter is thin, and surface-area is big, has reduced the ratio of vertical fibers, prolong the heat conducting path of solid, thereby lowered the thermal conductivity of core greatly;
4, the glass fibre cotton that centrifuging is produced among the present invention has fire-retardant, sound-absorbing, characteristic nontoxic, environmental protection makes the vacuum heat-insulating plate use range of producing very extensive.
5, integral production method technology of the present invention is simple, can adapt to the suitability for industrialized production requirement.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, these embodiment only are used to the present invention is described and are not used in and limit the scope of the invention, 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
A kind of high-performance and low-cost manufacture method of core material of vacuum heat insulation plate, concrete steps are as follows:
(1) cut-off directly is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuging;
(2) glass fibre cotton is added send into after water stirs and join stock tank dilution, weaker concn to 0.35%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
(4) slurry that will hold in the stock tank is sent into head box, adopts forming net to the glass fibre cotton moulding of dewatering then, makes glass fibre cotton core blank; When forming net dewatered to glass fibre cotton in this step, the speed of forming net was 5m/min;
(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 glass fibre core blank thickness is adjusted into 4.6mm;
(6) the glass fibre core blank of complete shaping is put into the moisture removal of the environment of negative pressure of vacuum, made glass fibre core blank water content be controlled at 50% glass fibre core blank 50%;
(7) the glass fibre core blank that will remove 50% moisture is then sent into baking and curing in the baking box, and baking the temperature inside the box is controlled at 350 degrees centigrade, and storing time is 8 minutes; After finishing, 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 vacuum glass cotton core material finished product of 5mm X 5mm.
Embodiment 2
A kind of high-performance and low-cost manufacture method of core material of vacuum heat insulation plate, concrete steps are as follows:
(1) cut-off directly is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuging;
(2) glass fibre cotton is added send into after water stirs and join stock tank dilution, weaker concn to 0.3%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
(4) slurry that will hold in the stock tank is sent into head box, adopts forming net to the glass fibre cotton moulding of dewatering then, makes glass fibre cotton core blank; When forming net dewatered to glass fibre cotton in this step, the speed of forming net was 8m/min;
(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 will make glass fibre core blank thickness be adjusted into 25mm;
(6) the glass fibre core blank of complete shaping is put into the moisture removal of the environment of negative pressure of vacuum, made glass fibre core blank water content be controlled at 45% glass fibre core blank 55%;
(7) the glass fibre core blank that will remove 55% moisture is then sent into baking and curing in the baking box, and baking the temperature inside the box is controlled at 400 degrees centigrade, and storing time is 10 minutes; After finishing, baking forms the whole plate of glass fibre core;
(8) 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 vacuum glass cotton core material finished product of 8mm X 5mm.
Embodiment 3
A kind of high-performance and low-cost manufacture method of core material of vacuum heat insulation plate, concrete steps are as follows:
(1) cut-off directly is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuging;
(2) glass fibre cotton is added send into after water stirs and join stock tank dilution, weaker concn to 0.6%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
(4) slurry that will hold in the stock tank is sent into head box, adopts forming net to the glass fibre cotton moulding of dewatering then, makes glass fibre cotton core blank; When forming net dewatered to glass fibre cotton in this step, the speed of forming net was 6m/min;
(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 glass fibre core blank thickness is adjusted into 9.1mm;
(6) the glass fibre core blank that will finish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 65%, makes glass fibre core blank water content be controlled at 35%;
(7) the glass fibre core blank that will remove 65% moisture is sent into baking and curing in the baking box, and baking the temperature inside the box is controlled at 450 degrees centigrade, and storing time is 15 minutes; After finishing, baking forms the whole plate of glass fibre core;
(8) 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 vacuum glass cotton core material finished product of 10mm X10mm.

Claims (3)

1. high-performance and low-cost manufacture method of core material of vacuum heat insulation plate, it is characterized in that: described high-performance and low-cost core material of vacuum heat insulation plate is 3.5-5um by diameter, the glass fibre cotton that length is produced for the 5-20mm centrifuging is made;
The concrete steps of this making method are as follows:
(1) cut-off directly is 3.5-5um, the glass fibre cotton that length is produced for the 5-20mm centrifuging;
(2) glass fibre cotton is added send into after water stirs and join stock tank dilution, weaker concn is to 0.3-1%;
(3) will dilute good glass fibre cotton slurries sends into and holds stock tank;
(4) slurry that will hold in the stock tank is sent into head 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 finish shaping is put into the moisture removal of the environment of negative pressure of vacuum with glass fibre core blank 50%-65%;
(7) the glass fibre core blank that will remove the moisture of 50%-65% is then sent into baking and curing in the baking box, and baking the temperature inside the box is controlled at 300-450 degree centigrade, and storing time is 5-15 minute; After finishing, 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.
2. a kind of high-performance and low-cost manufacture method of core material of vacuum heat insulation plate according to claim 1 is characterized in that: glass fibre core blank thickness is 0.5-30mm in the described step (5).
3. a kind of high-performance and low-cost manufacture method of core material of vacuum heat insulation plate according to claim 1 is characterized in that: when (4) forming net dewatered to glass fibre cotton in the described step, the speed of forming net was 5-8m/min.
CN2011101951710A 2011-07-13 2011-07-13 Vacuum insulation panel core material with high performance and low cost and manufacturing method thereof CN102330475B (en)

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Application Number Priority Date Filing Date Title
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CN102330475B true CN102330475B (en) 2013-07-31

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CN102628538A (en) * 2012-03-30 2012-08-08 周介明 Layered vacuum insulation board core material and preparation method thereof
CN102720919A (en) * 2012-06-08 2012-10-10 青岛科瑞新型环保材料有限公司 Vacuum insulated panel core and production 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
CN103542234A (en) * 2012-07-16 2014-01-29 苏州维艾普新材料有限公司 Dry method extra-fine glass wool vacuum insulated panel core material and preparation method thereof
CN103572644A (en) * 2012-07-24 2014-02-12 苏州维艾普新材料有限公司 Multi-component fibre hybrid composite material felt and preparation method thereof
CN102809022B (en) * 2012-08-24 2014-03-19 安徽科瑞克保温材料有限公司 Manufacturing method of heat insulating plate core material
CN102808352B (en) * 2012-08-24 2014-08-20 安徽科瑞克保温材料有限公司 Method for preparing glass wool core
CN103669616B (en) * 2012-09-14 2016-07-13 苏州维艾普新材料股份有限公司 Inorganic compounding core that a kind of glass fibre cotton and glass dust mix and preparation method
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
CN104368264A (en) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 Magnetic stirrer for slurry proportioning pool
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
CN104373765A (en) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 Device and method for manufacturing double-layer vacuum heat-insulation plate cores
CN104370450A (en) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 Preparation method of superfine centrifugal glass fiber dry-process core material with ultra-layer structure
CN103422584B (en) * 2013-08-21 2016-01-20 陈秀凯 Ventilative sliver heat sealing is utilized to make the method for vacuum thermal insulation plate
CN103742757B (en) * 2013-09-11 2016-02-24 太仓派欧技术咨询服务有限公司 Preparing apparatus of a kind of glass fibre core slurry and preparation method thereof
CN104291772B (en) * 2014-08-12 2017-04-26 南京航空航天大学 Fly ash doped glass fiber core material and preparation method thereof
CN105060725B (en) * 2015-08-20 2016-08-24 重庆再升科技股份有限公司 A kind of passive room plate and its preparation method and application

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