CN104747862A - VIP core material with glass fiber sheets and gas phase SiO2 - Google Patents

VIP core material with glass fiber sheets and gas phase SiO2 Download PDF

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Publication number
CN104747862A
CN104747862A CN201310739096.9A CN201310739096A CN104747862A CN 104747862 A CN104747862 A CN 104747862A CN 201310739096 A CN201310739096 A CN 201310739096A CN 104747862 A CN104747862 A CN 104747862A
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CN
China
Prior art keywords
core
gas phase
vip
plate
phase sio
Prior art date
Application number
CN201310739096.9A
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Chinese (zh)
Other versions
CN104747862B (en
Inventor
糜玥崎
杨烨
朱生荣
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常州山由帝武节能新材料制造有限公司
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Priority to CN201310739096.9A priority Critical patent/CN104747862B/en
Publication of CN104747862A publication Critical patent/CN104747862A/en
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Publication of CN104747862B publication Critical patent/CN104747862B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/02Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/028Composition or method of fixing a thermally insulating material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments

Abstract

The invention relates to a vacuum heat insulation board core material with a heat conduction coefficient ranging from 3.0 mW/(m K) to 4.0 mW/(m K) and with the service life not less than 30 years. The vacuum heat insulation board core material comprises a middle core material formed by a plurality of layers of laminated glass fiber sheets, and a gas phase SiO2 board is arranged on the upper end face and/or the lower end face of the middle core material in a covering manner; or the periphery of the middle core material is coated with a gas phase SiO2 powder layer; after the core material is made to VIP, due to mixed use of the gas phase SiO2 powder layer or a board and a glass fiber board, and the diameter of the gas phase SiO2 powder layer or the diameter of a gap in the board is in the nanoscale, surplus air or gradual seeping air in the VIP can be prevented from flowing in the thickness direction of the core material, so that heat conduction is avoided, that is, the isolation effect in the thickness direction is achieved. According to the core material, stability and VIP comprehensive performance of the VIP core material are conveniently kept, and the core material is mainly characterized in that after the SiO2 board is added, the integrality and mechanical strength of the VIP can be greatly improved, and the VIP is not prone to deforming.

Description

There is glass fibre sheet and gas phase SiO 2the VIP core of layer
Technical field
The present invention relates to a kind of VIP(vacuum heat-insulating plate) core, the VIP applying this core and heat insulating decorative board, be specifically related to a kind of by glass sheet material and SiO 2bisque or SiO 2the core material of vacuum heat insulation plate of plate laminated forming, it is applicable to the fields such as household electrical appliances insulation, Cold Chain Logistics, building heat preservation.
Background technique
Vacuum heat-insulating plate (i.e. VIP is the abbreviation of English Vacuum Insulation Panel) has applied in every field, and it meets customer requirement with the characteristic of energy-conservation, low-carbon (LC), environmental protection, safety.
In the working life of VIP, refer to that the gas slowly infiltrated in VIP increases gradually, think when plate internal pressure is consistent with the external world and lost efficacy.
For the VIP adopting glass fibre to make core, its working life is generally 10-15, and thermal conductivity is generally at 3.0mW/(mK) below; For employing gas phase SiO 2make the VIP of core, its working life is generally 50-70, and thermal conductivity is generally at 4.0-5.0mW/(mK) below; The VIP internal pressure requirement≤1Pa of glass core, and adopt gas phase SiO 2the VIP internal pressure of core can meet the demands at below 100Pa.How in conjunction with the advantage of the two, providing the VIP plate that a kind of thermal conductivity is lower, working life is longer, is the technical barrier that related domain will solve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of thermal conductivity and is in 3.0-4.0mW/(mK) between, the VIP core being no less than 30 years working life and preparation method thereof.
For solving the problems of the technologies described above, the invention provides a kind of core material of vacuum heat insulation plate, it comprises: the middle core that multilayer laminated glass fibre sheet is formed, and upper-end surface and/or the lower end surface of middle core are coated with gas phase SiO 2plate, or the periphery of described middle core is coated with gas phase SiO 2bisque.
After this core is made VIP, due to gas phase SiO 2bisque or plate and glass mat used in combination, and gas phase SiO 2aperture diameter in bisque or plate is nanometer, so can prevent the surplus air in VIP or the air that infiltrates gradually from conducting heat in the flowing of core thickness direction, namely play partition effect at thickness direction, be beneficial to and keep the stability of the thermal conductivity of VIP core and VIP combination property (mainly to add SiO 2the integrity of the VIP that can significantly improve after plate and mechanical strength, make VIP not yielding), make the thermal conductivity of the VIP utilizing this core to make be in 3.0-4.0mW/(mK) between; In addition, SiO 2be beneficial to absorbed air and water vapour (namely can absorb the gas slowly infiltrated), and then guarantee that the thermal conductivity of VIP plate remains on lower value and long-term stability, and then make be no less than 30 years the working life of VIP, and the gas phase SiO in VIP 2content is higher, and its working life is longer.
Alternatively, described middle core middle berth is provided with at least one deck gas phase SiO 2bisque or gas phase SiO 2plate.Specifically between adjacent two layers glass fibre sheet, or between adjacent glass fibre sheet and glass fiber mat, the gas phase SiO that at least one deck 1-15mm is thick is set 2bisque or gas phase SiO 2plate.Multi-layer vapor SiO 2bisque or plate can prevent the surplus air in VIP or the air that infiltrates gradually from conducting heat in the flowing of core thickness direction, namely play partition effect at thickness direction, improve heat-insulating property further.
Glass fibre sheet is the glass fibre sheet (i.e. short chopping sheet material) adopting wet paper manufacturing method shaping, or the glass fiber mat (i.e. dry method glass cotton piece material) adopting dry method non-woven fabrics craft shaping, or the sheet material that glass fibre sheet is formed with the lamination of glass fiber mat (namely mixing glass sheet material).
Alternatively, the upper-end surface of described middle core is coated with gas phase SiO 2bisque or gas phase SiO 2plate, the lower end surface of middle core and surrounding side wrap have superfine glass fiber cotton piece material; Or, by coated for middle core entirety superfine glass fiber cotton piece material; Fiber diameter in described superfine glass fiber cotton piece material is 1-4um, length is 1-5mm.
Described superfine glass fiber cotton piece material employing wet paper manufacturing method is shaping or dry method non-woven fabrics craft is shaping, gas phase SiO 2plate adopts gas phase SiO 2, SiC powder and some inorfils be compressing after stirring.
Apply the VIP of above-mentioned core material of vacuum heat insulation plate, described core is located in an encapsulating film bag, vacuumizes rear sealing.
Apply a heat insulating decorative board of above-mentioned VIP, be characterized in: be connected with triple ply in the both sides of this VIP or plate moulded by wood.This heat insulating decorative board, can be applicable to the decorative heat preservation of indoor and outdoor wall; Wherein, can spray coated paint arbitrarily on triple ply, be beneficial to individual decoration.
Technique effect of the present invention:
(1), this core is made VIP after, due to gas phase SiO 2bisque or plate and glass mat used in combination, and gas phase SiO 2aperture diameter in bisque or plate is nanometer, so can prevent the surplus air in VIP or the air that infiltrates gradually from conducting heat in the flowing of core thickness direction, namely play partition effect at thickness direction, be beneficial to and keep the stability of the thermal conductivity of VIP core and VIP combination property (mainly to add SiO 2the integrity of the VIP that can significantly improve after plate and mechanical strength, make VIP in use not yielding or distortion less), make the thermal conductivity of the VIP utilizing this core to make be in 3.0-4.0mW/(mK) between; In addition, SiO 2be beneficial to absorbed air and water vapour, and then guarantee that the thermal conductivity of VIP plate remains on lower value and long-term stability, and then make to be no less than 30 years the working life of VIP (being much better than to adopt glass fibre to make the VIP of core), and the gas phase SiO in VIP 2content is higher, and its working life is longer; In addition, relative to adopting SiO merely 2the central layer that plate is made, by gas phase SiO 2bisque or plate and glass mat used in combination, can very low cost, and reason is gas phase SiO 2cost generally higher than glass fibre.
(2), in composite core material of the present invention, upper-end surface and/or the lower end surface of middle core are coated with gas phase SiO 2plate, or the periphery of described middle core is coated with gas phase SiO 2bisque.Gas phase SiO 2bisque or plate are made up of powders material, there is not sharp object, not easily poke VIP film bag, so avoid the risk that VIP film bag is punctured on the whole.Also superfine glass fiber cotton piece material can be set in the side of middle core, or by coated for middle core entirety superfine glass fiber cotton piece material, the diameter of fiber due to superfine glass fiber cotton own is little, length is short, fiber is softer, be not easy to puncture film bag (namely avoiding the situation that diameter of the prior art is 6-13um, length is 4-20mm glass fibre easily punctures aluminizer bag), so applicable aluminizer and foil laminated film are produced; Which avoid short chopping core or dry method Chopped Strand Mat core is large-area contacts with film bag, effectively prevent the risk of fiber puncture film bag.Core of the present invention can be suitable for polytype film material and produce VIP, and breaches the restriction that thick diameter core can only use foil laminated film to produce, and the VIP plate of actual demand produced by composite core material film material of can arranging in pairs or groups arbitrarily;
(3), short chopping core of the prior art and dry method Chopped Strand Mat core all more fluffy, in order to promote short chopping and dry method Chopped Strand Mat core performance, Bond can be reduced in process of production as far as possible, so short chopping core and dry method Chopped Strand Mat core easily cause central layer damaged in process of production, short chopping is dropped, not easily pack and affect the sealing of sealing package sack, the phenomenons such as finished surface out-of-flatness, and adopt the superfine glass fiber bale of cotton to wrap up in the middle of the bottom surface of middle core or overall parcel can effectively to address these problems after core, and SiO can be solved 2bisque or SiO 2sheet material leaks the unfavorable factor that powder brings, and guarantees the reliability that sack seals.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the VIP core in embodiment 1, and it adopts gas phase SiO 2bisque or the coated middle core of plate, middle core comprises at least one deck gas phase SiO 2bisque or plate;
Fig. 2 is the cross-sectional view of the VIP core in embodiment 2, and it adopts core in the middle of superfine glass fiber cotton piece material integral coating, and middle core comprises at least one deck gas phase SiO 2bisque or plate;
Fig. 3 is the cross-sectional view of the VIP in embodiment 2, and it adopts bottom surface and the surrounding side of core in the middle of superfine glass fiber cotton piece material integral coating, adopts SiO 2the end face of core in the middle of bisque or plate cover, middle core comprises at least one deck gas phase SiO 2bisque or plate.
Embodiment
Below in conjunction with instantiation, the present invention is described in further detail.
Embodiment 1
As Fig. 1, the core material of vacuum heat insulation plate of this example comprises by the shaping glass fibre sheet 2(of the employing wet paper manufacturing method of 10-30 layer and short chopping sheet material), or the glass fiber mat (i.e. dry method glass cotton piece material) adopting dry method non-woven fabrics craft shaping, or the sheet material that glass fibre sheet is formed with the lamination of glass fiber mat (namely mixing glass sheet material) and 2-10 layer gas phase SiO 2the middle core of bisque or the alternately laminated formation of plate 1; Gas phase SiO is coated with respectively in these upper and lower both sides of middle core 2bisque or gas phase SiO 2plate.
Described gas phase SiO 2plate adopts gas phase SiO 2, SiC powder and some inorfils be compressing after stirring.
The diameter forming the glass fibre of described glass fiber mat is 4-20um, length is 4-15mm.
Described glass fibre sheet adopts the glass chopped silk that diameter is 6-13um, length is the production of 4-20mm fiber elongation method shaping.
Glass fibre layer distributed, major part and top surface being parallel in described glass fibre sheet, glass fibre random distribution in isoplanar, the thickness of this sheet material is even, vacuumize with the gap being beneficial to reducing adjacent fiber, simultaneously because heat conducts heat along the length direction of glass fibre mostly, therefore the top surface being parallel of its most of glass fibre and this glass fiber mat is distributed, heat can be prevented in thickness direction transmission.
Most of glass fibre in described glass fiber mat and the top surface being parallel of this glass fiber mat distribute, and vacuumize with the gap being beneficial to reducing adjacent fiber; In addition, because heat conducts heat along the length direction of glass fibre mostly, therefore the top surface being parallel of its most of glass fibre and this glass fiber mat is distributed, heat can be prevented in thickness direction transmission.
The thermal conductivity of the VIP that the core referred to by this embodiment is made is 3.0-4.0mW/m.k, is no less than 30 years working life.
And adopt the VIP internal pressure of the present embodiment core at more than 1Pa, do not affect the performance of VIP, gas phase SiO 2content is higher, and the permitted value of VIP internal pressure is higher, generally can meet the demands at below 20-50Pa, and design parameter obtains by experiment.
Embodiment 2
As Fig. 2, the core material of vacuum heat insulation plate of this example comprises by the shaping glass fibre sheet 2(of the employing wet paper manufacturing method of multilayer and short chopping core) and 2-5 layer gas phase SiO 2the middle core of bisque or the alternately laminated formation of plate 1; Wrapped up by superfine glass fiber cotton piece material 3 in this middle core entirety, the fiber diameter in superfine glass fiber cotton piece material 3 is 1-4um, length is 1-5mm, and the thermal conductivity of the VIP be made up of this core is 3.0-4.0mW/m.k, is no less than 30 years working life.
As a kind of variable mode of execution, described middle core is located in the bag be made up of above-mentioned superfine glass fiber cotton piece material, or the edge of the described middle core of above-mentioned superfine glass fiber cotton piece material parcel.
Embodiment 3
As Fig. 3, the core material of vacuum heat insulation plate of this example comprises by the shaping glass fibre sheet 2(of the employing wet paper manufacturing method of 10-30 layer and short chopping core) and 2-10 layer gas phase SiO 2the middle core of bisque or the alternately laminated formation of plate 1; SiO is coated with respectively in the both sides up and down of this middle core 2plate 1 and superfine glass fiber cotton piece material 3, four sides of coated middle core while of this superfine glass fiber cotton piece material 3; Fiber diameter in described superfine glass fiber cotton piece material 3 is 1-4um, length is 1-5mm, and the thermal conductivity of the vacuum heat-insulating plate be made up of this core is 3.0-4.0mW/m.k, is no less than 30 years working life.
Described glass fibre sheet is 6-13um by adopting diameter, and length is that the glass chopped silk that 4-20mm fiber elongation method is produced is shaping through wet paper manufacturing method.

Claims (6)

1. a core material of vacuum heat insulation plate, is characterized in that comprising: the middle core that multilayer laminated glass fibre sheet is formed, and upper-end surface and/or the lower end surface of this middle core are coated with gas phase SiO 2plate, or the periphery of described middle core is coated with gas phase SiO 2bisque or gas phase SiO 2plate.
2. core material of vacuum heat insulation plate as claimed in claim 1, is characterized in that: described middle core middle berth is provided with at least one deck gas phase SiO 2bisque or gas phase SiO 2plate.
3. a core material of vacuum heat insulation plate, is characterized in that comprising: the middle core that multilayer laminated glass fibre sheet is formed, and the upper-end surface of this middle core is coated with gas phase SiO 2bisque or gas phase SiO 2plate, the lower end surface of middle core and surrounding side wrap have superfine glass fiber cotton piece material;
Or, by coated for middle core entirety superfine glass fiber cotton piece material.
4. core material of vacuum heat insulation plate as claimed in claim 3, is characterized in that: described middle core middle berth is provided with at least one deck gas phase SiO 2bisque or gas phase SiO 2plate.
5. the VIP applying the core described in the claims 1 or 3 and make.
6. apply a heat insulating decorative board of the VIP described in the claims 5, it is characterized in that: be connected with triple ply in the both sides of this VIP or plate moulded by wood.
CN201310739096.9A 2013-12-27 2013-12-27 VIP core material with glass fiber sheets and gas phase SiO2 CN104747862B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106926529A (en) * 2015-12-30 2017-07-07 福建赛特新材股份有限公司 Core and its production method and vacuum heat-insulating plate that a kind of vacuum heat-insulating plate is used
CN106926520A (en) * 2015-12-30 2017-07-07 福建赛特新材股份有限公司 Inside core and its production method and vacuum heat-insulating plate that vacuum heat-insulating plate is used
CN107387944A (en) * 2017-06-28 2017-11-24 高彦峰 A kind of environment-friendly type vacuum insulation panel
CN108383488A (en) * 2018-04-01 2018-08-10 中鸿纳米纤维技术丹阳有限公司 A kind of silica aerogel reinforcing fiber based on fiberglass fiber

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CN201944491U (en) * 2011-03-10 2011-08-24 苏州维艾普新材料有限公司 High performance vacuum insulated panel with compound core material
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106926529A (en) * 2015-12-30 2017-07-07 福建赛特新材股份有限公司 Core and its production method and vacuum heat-insulating plate that a kind of vacuum heat-insulating plate is used
CN106926520A (en) * 2015-12-30 2017-07-07 福建赛特新材股份有限公司 Inside core and its production method and vacuum heat-insulating plate that vacuum heat-insulating plate is used
CN107387944A (en) * 2017-06-28 2017-11-24 高彦峰 A kind of environment-friendly type vacuum insulation panel
CN107387944B (en) * 2017-06-28 2020-01-10 高彦峰 Environment-friendly vacuum insulation board
CN108383488A (en) * 2018-04-01 2018-08-10 中鸿纳米纤维技术丹阳有限公司 A kind of silica aerogel reinforcing fiber based on fiberglass fiber

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