CN103090157B - A kind of vacuum heat-insulating plate and preparation method thereof - Google Patents
A kind of vacuum heat-insulating plate and preparation method thereof Download PDFInfo
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- CN103090157B CN103090157B CN201310045779.4A CN201310045779A CN103090157B CN 103090157 B CN103090157 B CN 103090157B CN 201310045779 A CN201310045779 A CN 201310045779A CN 103090157 B CN103090157 B CN 103090157B
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Abstract
The invention discloses a kind of vacuum heat-insulating plate used for building exterior wall, described vacuum heat-insulating plate comprises high-isolation film bag and is wrapped in heat insulation core material wherein, and described heat insulation core material comprises basalt fibre.Vacuum heat insulating plate structure of the present invention is simple, cost is low, energy-conserving and environment-protective, safety, fire prevention, good heat insulating.The invention also discloses a kind of preparation method of described vacuum heat-insulating plate, comprising: the preparation of (1) material; (2) compressing; (3) dry; (4) encapsulate.The invention solves the persistent problem of the bag that rises of traditional vacuum thermal shield, gas leakage, core decay, degree of vacuum, overcome pulverulent materials such as adopting silica simultaneously and fill the defect of making sheet difficulty with fiber composite, preparation method is simple to operation, time saving and energy saving.
Description
Technical field
The present invention relates to a kind of warming plate, particularly relate to a kind of vacuum heat-insulating plate for external wall and preparation method thereof.
Background technique
The heat-insulation system of the inorganic material such as organic board and rock wool, foam cement, foamed glass such as styrofoam, extrusion molding benzene plate, hard polyurethane foam plate, phenolic board is mainly adopted in existing outer wall heat preservation system, there is certain defect in these systems, such as frpf poor thermal insulation property, the fire prevention of insulation is poor.At present, a kind of vacuum insulation plate technique obtains application, and this technology is primarily of gas barrier film, blocking materials, getter part composition, obtained by vacuumizing, but the defects such as the endurance because of the bag that easily rises, gas leakage, core decay, degree of vacuum is poor, its application is restricted.In production with in using for a long time, some has a small amount of permeable gas leak phenomenon generation to gas barrier film, and traditional core can slowly expand at this moment, affects heat insulation effect, so must add getter, but after adding getter, effect is still not good.Need arrange infrared reflecting layer on packing material surface, its objective is the approach from intrinsic block heat-radiation heat-dissipating, thus make its heat-insulating property better, preparation method is complicated, and cost is high, wastes time and energy.
Summary of the invention
The technical problem to be solved in the present invention is the persistent problem of the bag that rises of vacuum heat-insulating plate, gas leakage, core decay, degree of vacuum, overcomes pulverulent materials such as adopting silica simultaneously and fills the defect of making sheet difficulty with fiber composite.
The invention provides that a kind of structure is simple, cost is low, energy-conserving and environment-protective, safety, fire prevention, good heat insulating and the easy vacuum heat-insulating plate of preparation method.
The invention provides a kind of vacuum heat-insulating plate, comprise outer field high-isolation film bag and inner heat insulation core material, described heat insulation core material is tightly wrapped in wherein by described high-isolation film bag, and described heat insulation core material comprises basalt fibre, and the thickness of described heat insulation core material is 10 ~ 80mm.
Vacuum heat-insulating plate of the present invention, fiber diameter≤9 μm of wherein said basalt fibre, length is 1 ~ 100mm, water content≤1%, size content≤0.2%, described immersion agent mainly contains epoxy polyester and silane, is all shaping chemical product, and Main Function is the mechanical bonding force of reinforcing fiber and interlaminar resin.
Vacuum heat-insulating plate of the present invention, wherein said basalt fibre serviceability temperature is between-260 ~ 650 DEG C.
Vacuum heat-insulating plate of the present invention, the basalt fibre felt that wherein said heat insulation core material is made up of described basalt fibre or the compacting of basalt fibre plate form.
Vacuum heat-insulating plate of the present invention, the thickness of wherein said basalt fibre felt or wad is 5 ~ 30mm, and unit weight is 3 ~ 20kg/m
2.
Vacuum heat-insulating plate of the present invention, wherein said high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag, and thickness is 3-12 μm.
A preparation method for described vacuum heat-insulating plate, comprises the steps:
(1) basalt fibre or basalt fibre felt or basalt fibre plate selection and cut out;
(2) by basalt fibre or basalt fibre felt or basalt fibre plate compressing on trigger squeeze, obtain heat insulation core material;
(3) dry;
(4) heat insulation core material after drying is loaded in high-isolation film bag, utilize vacuum pump set to extract air in described high-isolation film bag, seal, obtain product.
The preparation method of vacuum heat-insulating plate of the present invention, wherein, the compression strength in compressing process described in step (2) is 200-250kPa, and the heat insulation core material unit weight after compressing is 50 ~ 250kg/m
2.
The preparation method of vacuum heat-insulating plate of the present invention, wherein, adopts in step (3) vacuum drier to dry, degree of vacuum at below 1000Pa, and the endurance must not be less than 10 minutes.
The preparation method of vacuum heat-insulating plate of the present invention, wherein, described in step (4), packaging method is: care should be used to loads in order to avoid destroy its integrity, install between the interlayer first basalt fibre of oven dry being loaded described high-isolation film bag two films, at hot-seal, place seals, first seal three limits, finally vacuumize post heat-seal last; Keep sealing for more than 10 minutes be less than the condition of 1Pa in degree of vacuum under, heat-sealing temperature is 100 ~ 190 DEG C, and the heat-sealing time is 2s ~ 20s, heat-sealing pressure is 1kg/cm
2~ 7kg/cm
2.
Vacuum heat-insulating plate difference from prior art of the present invention is that vacuum heat-insulating plate of the present invention comprises high-isolation film bag and is wrapped in heat insulation core material wherein, described heat insulation core material comprises basalt fibre (also claiming volcanic rock fibre), and described basalt fibre is by SiO
2(keeping chemical stability and the mechanical strength of fiber), AL
2o
3(raising thermostability), CaO(improve corrosion resistance), TiO
2(improve waterproof and corrosion resistance) composition, itself have that heat-resisting quantity is good, anti-oxidant, good, the incompressible intensity of radioresistance, thermal acoustic insulation, filterability and shear strength high, be adapted to various environment under the excellent properties such as to use; Basalt fibre has unique not stratified crisscross reticular structure, and anti-drawing strength is high, high insulating effect; Basalt fibre have energy-efficient, fire prevention, security of system advantages of higher.
The present invention adopts vacuum structure, block its heat transfer path, thus reach the object of insulation, if adopt other any materials, because it is medium, all the time effect of heat transfer is had, only have when thickness reaches certain value, just can reach the thermal insulation property required by us, vacuum is adopted then to solve this problem, so adopt vacuum heat-preserving to greatly reduce the thickness of thermal insulating material, thus saved material and space and reached energy-conservation object, the excellent thermal insulation performance of core basalt fibre, thermal conductivity is about 0.036.
Preparation method of the present invention is simple to operation, time saving and energy saving, solves the pulverulent materials such as silica and fills the defect of making sheet difficulty with fiber composite; The general adsorbent that all within it adds of traditional preparation method is with the permanence of retainer degree of vacuum, and heat insulation core material of the present invention adopts the stability of basalt fibre and the feature of low water absorption, under the prerequisite not adding getter, solve the problem such as endurance difference of the bag that rises of traditional vacuum thermal shield, gas leakage, core decay, degree of vacuum; Traditional preparation method need arrange infrared reflecting layer on packing material surface, its objective is the approach from intrinsic block heat-radiation heat-dissipating, thus make its heat-insulating property better, and the employing of this product is basalt fibre, itself there is radiation-resistant performance, the aluminium foil fiber composite vacuum heat-insulation bag simultaneously adopted also has the function of antiradiation, so do not need additionally to add infrared reflecting layer again.
Below in conjunction with accompanying drawing, vacuum heat-insulating plate of the present invention and preparation method thereof is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum heat-insulating plate of the present invention.
Embodiment
As shown in Figure 1, vacuum heat-insulating plate of the present invention comprises high-isolation film bag and heat insulation core material 1, and described high-isolation film bag is preferably aluminium foil fiber composite vacuum heat-insulation bag 2.Described heat insulation core material 1 comprises basalt fibre, basalt fibre has unique not stratified crisscross reticular structure, anti-drawing strength is high, heat insulation effect, does not need to add getter in addition, and in Long-Time Service, some has a small amount of air and moisture enters to gas barrier film, other heat insulation core materials 1 can slowly expand, have impact on heat insulation effect, so must add getter, but effect is still not good.The basalt fibre that the present invention adopts is because of the Nomenclature Composition and Structure of Complexes of its uniqueness, above-mentioned phenomenon can not be there is, solve the bag that rises of traditional vacuum thermal shield, gas leakage, core decay, degree of vacuum endurance difference etc. problem, have energy-efficient, fire prevention, security of system advantages of higher.
Embodiment 1
A kind of vacuum heat-insulating plate, comprise high-isolation film bag and be wrapped in heat insulation core material 1 wherein, described heat insulation core material 1 comprises basalt fibre, the fiber diameter of described basalt fibre 8 ~ 9 μm, length is 90 ~ 100mm, water content is 1%, and size content is 0.2%, and serviceability temperature is between-260 ~ 650 DEG C.Described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag 2, and thickness is 3 μm.
The preparation method of described vacuum heat-insulating plate, comprises the steps:
(1) basalt fibre of above-mentioned specification is selected;
(2) basalt fibre is compressing on trigger squeeze, compression strength is 200kPa, and heat insulation core material 1 thickness after compressing is 10mm, and unit weight is 50kg/m
2;
(3) adopt vacuum drier to dry, bake out temperature is 220 DEG C, and degree of vacuum is 1000Pa, continues 10 minutes;
(4) heat insulation core material 1 after drying is loaded in aluminium foil fiber composite vacuum heat-insulation bag 2, utilize vacuum pump set to extract air in described aluminium foil fiber composite vacuum heat-insulation bag 2, seal, obtain product;
Described encapsulation process is specially: install between the interlayer first heat insulation core material 1 of oven dry being loaded aluminium foil fiber composite vacuum heat-insulation bag 2 two films, seal, first seal three limits, finally vacuumize post heat-seal last at hot-seal place 3; Described heat seal process is carried out under degree of vacuum is the condition of 1Pa, and keeps 10 minutes, and heat-sealing temperature is 100 DEG C, and the heat-sealing time is 2s, and heat-sealing pressure is 1kg/cm
2.
Embodiment 2
A kind of vacuum heat-insulating plate, comprise high-isolation film bag and be wrapped in heat insulation core material 1 wherein, described heat insulation core material 1 comprises basalt fibre, the fiber diameter of described basalt fibre 7 ~ 8 μm, length is 70 ~ 80mm, water content is 0.9%, and size content is 0.1%, and serviceability temperature is between-260 ~ 650 DEG C.Described heat insulation core material 1 is the basalt fibre felt that described basalt fibre is made, and thickness is 30mm, and unit weight is 20kg/m
2.Described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag 2, and thickness is 12 μm.
The preparation method of described vacuum heat-insulating plate, comprises the steps:
(1) select the basalt fibre felt of above-mentioned size and specification, when needing, carry out suitable cutting out;
(2) by compressing on trigger squeeze for the basalt fibre felt cut out, compression strength is 250kPa, and heat insulation core material 1 thickness after compressing is 60mm, and unit weight is 200kg/m
2;
(3) adopt vacuum drier to dry, bake out temperature is 500 DEG C, and degree of vacuum is 800Pa, and the endurance is 20 minutes;
(4) heat insulation core material 1 after drying is loaded in aluminium foil fiber composite vacuum heat-insulation bag 2, utilize vacuum pump set to extract air in described aluminium foil fiber composite vacuum heat-insulation bag 2, seal, obtain product;
Described encapsulation process is specially: install between the interlayer first heat insulation core material 1 of oven dry being loaded aluminium foil fiber composite vacuum heat-insulation bag 2 two films, seal, first seal three limits, finally vacuumize post heat-seal last at hot-seal place 3; Described heat seal process is carried out under degree of vacuum is the condition of 0.8Pa, and keeps 20 minutes, and heat-sealing temperature is 190 DEG C, and the heat-sealing time is 20s, and heat-sealing pressure is 7kg/cm
2.
Embodiment 3
A kind of vacuum heat-insulating plate, comprise high-isolation film bag and be wrapped in heat insulation core material 1 wherein, described heat insulation core material 1 comprises basalt fibre, the fiber diameter of described basalt fibre 5 ~ 6 μm, length is 55 ~ 75mm, water content is 0.5%, and size content is 0.15%, and serviceability temperature is between-260 ~ 650 DEG C.Described heat insulation core material 1 is the basalt fibre plate that described basalt fibre is made, and thickness is 20mm, and unit weight is 15kg/m
2.Described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag 2, and thickness is 10 μm.
The preparation method of described vacuum heat-insulating plate, comprises the steps:
(1) select the basalt fibre plate of above-mentioned size and specification, when needing, carry out suitable cutting out;
(2) by compressing on trigger squeeze for the basalt fibre plate cut out, compression strength is 220kPa, and heat insulation core material 1 thickness after compressing is 80mm, and unit weight is 250kg/m
2;
(3) adopt vacuum drier to dry, bake out temperature is 300 DEG C, and degree of vacuum is 900Pa, continues 30 minutes;
(4) heat insulation core material 1 after drying is loaded in aluminium foil fiber composite vacuum heat-insulation bag 2, utilize vacuum pump set to extract air in described aluminium foil fiber composite vacuum heat-insulation bag 2, seal, obtain product;
Described encapsulation process is specially: install between the interlayer first heat insulation core material 1 of oven dry being loaded aluminium foil fiber composite vacuum heat-insulation bag 2 two films, seal, first seal three limits, finally vacuumize post heat-seal last at hot-seal place 3; Described heat seal process is carried out under degree of vacuum is the condition of 0.9Pa, and keeps 30 minutes, and heat-sealing temperature is 150 DEG C, and the heat-sealing time is 10s, and heat-sealing pressure is 5kg/cm
2.
Embodiment 4
A kind of vacuum heat-insulating plate, comprise high-isolation film bag and be wrapped in heat insulation core material 1 wherein, described heat insulation core material 1 comprises basalt fibre, the fiber diameter of described basalt fibre 3 ~ 4 μm, length is 20 ~ 30mm, water content is 0.4%, and size content is 0.05%, and serviceability temperature is between-260 ~ 650 DEG C.Described heat insulation core material 1 is the basalt fibre felt that described basalt fibre is made, and thickness is 15mm, and unit weight is 11kg/m
2.Described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag 2, and thickness is 5 μm.
The preparation method of described vacuum heat-insulating plate, comprises the steps:
(1) select the basalt fibre felt of above-mentioned size and specification, when needing, carry out suitable cutting out;
(2) by compressing on trigger squeeze for the basalt fibre felt cut out, compression strength is 210kPa, and heat insulation core material 1 thickness after compressing is 45mm, and unit weight is 180kg/m
2;
(3) adopt vacuum drier to dry, bake out temperature is 400 DEG C, and degree of vacuum is 500Pa, and the endurance is 25 minutes;
(4) heat insulation core material 1 after drying is loaded in aluminium foil fiber composite vacuum heat-insulation bag 2, utilize vacuum pump set to extract air in described aluminium foil fiber composite vacuum heat-insulation bag 2, seal, obtain product;
Described encapsulation process is specially: install between the interlayer first heat insulation core material 1 of oven dry being loaded aluminium foil fiber composite vacuum heat-insulation bag 2 two films, seal, first seal three limits, finally vacuumize post heat-seal last at hot-seal place 3; Described heat seal process is carried out under degree of vacuum is the condition of 0.4Pa, and keeps 40 minutes, and heat-sealing temperature is 120 DEG C, and the heat-sealing time is 8s, and heat-sealing pressure is 4kg/cm
2.
Embodiment 5
A kind of vacuum heat-insulating plate, comprise high-isolation film bag and be wrapped in heat insulation core material 1 wherein, described heat insulation core material 1 comprises basalt fibre, the fiber diameter of described basalt fibre 1 ~ 5 μm, length is 1 ~ 10mm, water content is 0.6%, and size content is 0.16%, and serviceability temperature is between-260 ~ 650 DEG C.Described heat insulation core material 1 is the basalt fibre plate that described basalt fibre is made, and thickness is 10mm, and unit weight is 8kg/m
2.Described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag 2, and thickness is 8 μm.
The preparation method of described vacuum heat-insulating plate, comprises the steps:
(1) select the basalt fibre plate of above-mentioned size and specification, when needing, carry out suitable cutting out;
(2) by compressing on trigger squeeze for the basalt fibre plate cut out, compression strength is 240kPa, and heat insulation core material 1 thickness after compressing is 30mm, and unit weight is 100kg/m
2;
(3) adopt vacuum drier to dry, bake out temperature is 350 DEG C, and degree of vacuum, at 600Pa, continues 15 minutes;
(4) heat insulation core material 1 after drying is loaded in aluminium foil fiber composite vacuum heat-insulation bag 2, utilize vacuum pump set to extract air in described aluminium foil fiber composite vacuum heat-insulation bag 2, seal, obtain product;
Described encapsulation process is specially: install between the interlayer first heat insulation core material 1 of oven dry being loaded aluminium foil fiber composite vacuum heat-insulation bag 2 two films, seal, first seal three limits, finally vacuumize post heat-seal last at hot-seal place 3; Described heat seal process is carried out under degree of vacuum is the condition of 0.7Pa, and keeps 1 hour, and wherein, heat-sealing temperature is 180 DEG C, and the heat-sealing time is 16s, and heat-sealing pressure is 6kg/cm
2.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technological scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (6)
1. a vacuum heat-insulating plate, it is characterized in that: comprise outer field high-isolation film bag and inner heat insulation core material, described heat insulation core material is tightly wrapped in wherein by described high-isolation film bag, and described heat insulation core material comprises basalt fibre, and the thickness of described heat insulation core material is 10 ~ 80mm;
The preparation method of described vacuum heat-insulating plate comprises the steps:
(1) basalt fibre selection and cut out;
(2) basalt fibre is compressing on trigger squeeze, obtain heat insulation core material;
(3) dry;
(4) heat insulation core material after drying is loaded in high-isolation film bag, utilize vacuum pump set to extract air in described high-isolation film bag, seal, obtain product;
Compression strength in compressing process described in step (2) is 200-250kPa, and the heat insulation core material unit weight after compressing is 50 ~ 250kg/ ㎡;
Adopt in step (3) vacuum drier to dry, temperature 220-500 DEG C, degree of vacuum at below 1000Pa, and the endurance must not be less than 10 minutes;
Described in step (4), heat-sealing method is: first loaded by the basalt fibre of oven dry between described high-isolation film bag two thin film sandwich and install, at hot-seal, place seals, and first seals three limits, finally vacuumizes post heat-seal last; Seal be less than the condition of 1Pa in degree of vacuum under, and keep more than 10 minutes, heat-sealing temperature is 100 ~ 190 DEG C, and the heat-sealing time is 2s ~ 20s, and heat-sealing pressure is 1kg/cm
2~ 7kg/cm
2.
2. vacuum heat-insulating plate according to claim 1, is characterized in that: fiber diameter≤9 μm of described basalt fibre, and length is 1 ~ 100mm, water content≤1%, size content≤0.2%.
3. vacuum heat-insulating plate according to claim 2, is characterized in that: described basalt fibre serviceability temperature is between-260 ~ 650 DEG C.
4. the vacuum heat-insulating plate according to claim 1 or 2 or 3, is characterized in that: the basalt fibre felt that described heat insulation core material is made up of described basalt fibre or the compacting of basalt fibre plate form.
5. vacuum heat-insulating plate according to claim 4, is characterized in that: the thickness of described basalt fibre felt or wad is 5 ~ 30mm, and unit weight is 3 ~ 20kg/ ㎡.
6. vacuum heat-insulating plate according to claim 5, is characterized in that: described high-isolation film bag is aluminium foil fiber composite vacuum heat-insulation bag, and thickness is 3-12 μm.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103353046A (en) * | 2013-06-08 | 2013-10-16 | 广西壮族自治区特种设备监督检验院 | Flexible vacuum heat-insulating quilt |
| CN104369921A (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 measuring internal pressure of bag during packaging of vacuum insulated panel |
| CN104373766A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Heat-sealing method of vacuum insulating plate barrier film for household appliances |
| CN103672302B (en) * | 2013-12-06 | 2016-03-23 | 陈明秦 | Boundless vacuum heat-insulating plate and preparation method thereof |
| CN104406009A (en) * | 2014-09-17 | 2015-03-11 | 安徽吉曜玻璃微纤有限公司 | Dry vacuum insulated panel and production method thereof |
| CN105570617A (en) * | 2014-09-29 | 2016-05-11 | 福建赛特新材股份有限公司 | Manufacturing method of vacuum insulation board |
| CN108223972A (en) * | 2018-01-25 | 2018-06-29 | 安徽百特新材料科技有限公司 | A kind of preparation method of novel vacuum heat-insulating board |
| JPWO2019150478A1 (en) * | 2018-01-31 | 2020-11-19 | 三菱電機株式会社 | Vacuum heat insulating material and heat insulating box |
| CN111188521A (en) * | 2020-03-30 | 2020-05-22 | 中国科学院西北生态环境资源研究院 | Snow storage method |
| CN111519777A (en) * | 2020-05-11 | 2020-08-11 | 滁州银兴新材料科技有限公司 | Processing technology and installation technology of vacuum heat insulation plate |
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