CN104712883A - Vacuum insulated panel with straw as core material - Google Patents
Vacuum insulated panel with straw as core material Download PDFInfo
- Publication number
- CN104712883A CN104712883A CN201310687179.8A CN201310687179A CN104712883A CN 104712883 A CN104712883 A CN 104712883A CN 201310687179 A CN201310687179 A CN 201310687179A CN 104712883 A CN104712883 A CN 104712883A
- Authority
- CN
- China
- Prior art keywords
- insulating plate
- vacuum heat
- straw
- barrier layer
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a vacuum insulated panel with straw as a core material. The heat conductivity coefficient ranges from 2.5 mW/m*K to 5.5 mW/m*K, and the density ranges from 120 kg/m<3> to 220 kg/m<3>. The vacuum insulated panel is composed of an outer barrier layer, an inner barrier layer, a straw heat preserving core layer, getter and a drying agent. The straw heat preserving core layer is one or two or three of rice straw, wheat straw, reed rods or corn stalks. The naturally-stacked density of the heat preserving core layer ranges from 30 kg/m<3> to 150 kg/m<3>, the length of a straw unit ranges from 5 mm to 100 mm, the porosity ranges from 75% to 93%, and the moisture content ranges from 0.05% to 5%. The outer barrier layer is a composite film formed by bonding fiber cloth, an aluminum foil, a PET film, a PA film and a PE film through a binder or a composite film formed by bonding an aluminum foil, a PET film and a PE film through a binder. The inner barrier layer is composed of a plastic film, a glass fiber net and a non-woven fabric. According to the vacuum insulated panel, the straw serves as the core material, the price is low, the technology is simple, the heat preserving performance is superior, the low-carbon and energy-saving effects are obvious, the waste material is changed into a thing of value, the economical benefits are remarkable, and the straw is an environmentally-friendly heat preserving material; the vacuum insulated panel can be applied to the heat preserving fields such as buildings, pipelines, refrigerators, refrigeration houses and water heaters.
Description
Technical field
The present invention relates to field of thermal insulation, is a kind of vacuum heat-insulating plate, particularly relates to the vacuum heat-insulating plate that a kind of stalk is core.
Background technique
The current whole world is faced with energy crisis, and energy-saving and emission-reduction have become the focus that the whole world is paid close attention to, and the exploitation of new energy, new technology and new material is imperative.Vacuum heat-insulating plate is as a kind of heat insulating material, and thermal conductivity is low, and thickness is thin, reduces energy consumption in fields such as refrigerator, freezer, Medical heat-preserving box, buildings, and improving Economy has huge development potentiality.
Application number is disclose a kind of vacuum heat-insulating plate in the Chinese patent of 200420053407.2, comprise shell and be arranged on the adiabatic core in vacuum casting, described core comprises aerosil and glass fibre, glass fibre is interwoven between aerosil, described shell is stacked bag or hard metal or glass plate, after this thermoinsulation material vacuum forming, hardness is large, not easily broken, processes and uses more flexible.
Application number is disclose a kind of vacuum heat-insulating plate in the Chinese patent of 201120085194.1, comprise vacuum heat-insulating plate body, the material of described vacuum heat-insulating plate body is ultra-fine fibre glass, be provided with aluminium foil barrier bag outside vacuum heat-insulating plate body, barrier bag side is provided with sealing, and the advantage of this patent is that insulation layer thickness is thin, volume is little, quality is light, sealability is strong, full pressure period is long, add actual volume, improve haul distance, decrease freight charges, be applicable to the product that power conservation requirement is high.
But be that the vacuum heat-insulating plate production environment of core is severe with glass fibre, a large amount of micron-sized glass fibre easily by workman's suction body, damages and hidden danger human body; On the other hand, existing vacuum heat-insulating plate cost is high, fetch long price, limits vacuum heat-insulating plate promotion and application in the whole society; Vacuum heat-insulating plate simultaneously in market all can add the chemical synthetic material that can not degrade in preparation process, and a large amount of glass wools can cause serious pollution to environment after discarding.
Based on the thought of " environmental friendliness; turn waste into wealth ", consider that agricultural crop straw production is large, wide material sources, can regenerate, low price, be one of main agricultural solid residue, if stalk is utilized effectively, a kind of rich in natural resources will be become, therefore, explore a kind of cheap, preparation is simple, low-carbon energy-saving, environmental friendliness have again excellent thermal insulation property concurrently take stalk as the vacuum heat-insulating plate of core is the focus that we will study from now on.
Summary of the invention
The present invention is intended to the deficiency overcoming the research of existing thermal insulating material, provides a kind of vacuum heat-insulating plate.This kind vacuum heat-insulating plate is cheap, preparation is simple, low-carbon energy-saving, environmental friendliness, excellent thermal insulation performance, can be applied to the various field of thermal insulation such as building, pipeline, refrigerator, freezer, water heater, is the best thermal insulating material making zero energy consumption building.
For the problems referred to above, the invention provides the vacuum heat-insulating plate that a kind of stalk is core, thermal conductivity is 2.5 ~ 5.5mW/mK, it is characterized in that described vacuum heat-insulating plate is made up of outer barrier layer, inner barrier layer, stalk heat preservation core layer and getter, siccative.
Vacuum heat-insulating plate density is 120 ~ 220kg/m
3.
Vacuum heat-insulating plate air pressure inside is 0.1 ~ 100Pa.
Outer barrier layer is the composite membrane bondd through Bond by fibre cloth, aluminium foil, PET film, PA film and PE film or the composite membrane bondd through Bond by aluminium foil, PET film and PE film, and outer barrier layer grammes per square metre is less than 45g/m
2.
Inner barrier layer is plastic film, glass-fiber-fabric, nonwovens, directly contacts with core.
Outer barrier layer is coated with liquid silastic, polyurethane, PE film.
Stalk heat preservation core layer be in rice straw, straw, reed rod, cornstalk any one, the combination of two or three.
Heat preservation core layer natural deposited dry density is 30 ~ 150kg/m
3, stalk element length is 5 ~ 100mm, and porosity ratio is 75 ~ 93%, and moisture content is 0.05 ~ 5%.
Described getter is porous sintered type getter or non-metallic getters, as active carbon etc., siccative is neutrophil granule siccative, as the calcium chloride etc. of calcium sulfate, aluminium oxide, melting, getter and siccative are dispersed in heat preservation core layer, concentrate certain being placed in heat preservation core layer.
Major advantage of the present invention is: 1. this kind of vacuum heat-insulating plate adopts stalk as core raw material, cheap, remarkable in economical benefits; 2. do not add unnecessary chemical additives and other raw materials in preparation process, technique is simple; 3. excellent thermal insulation performance, low-carbon energy-saving successful; 4. turning waste into wealth, is a kind of eco-friendly thermal insulating material; 5. there is good mechanical property, durability and resistance to cracking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and wherein 10 is outer barrier layer, and 20 is inner barrier layer, and 30 is heat preservation core layer, and 40 is getter and siccative.
Embodiment
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims and limited.
Embodiment 1
A kind of vacuum heat-insulating plate, comprise outer barrier layer, inner barrier layer, stalk heat preservation core layer and getter, siccative, its thermal conductivity is 3.9mW/mK, and density is 130kg/m
3.Heat preservation core layer is 54kg/m by natural packing state lower density
3straw composition, straw element length is 20mm, and porosity ratio is 82%, and moisture content is 5%.Outer barrier layer is the composite membrane bondd through Bond by aluminium foil, PET film and PE film, and inner barrier layer is nonwovens, and vacuum heat-insulating plate air pressure inside is 10Pa, has active carbon getter and calcium sulfate particle siccative to be dispersed in heat preservation core layer in barrier layer.
Embodiment 2
A kind of vacuum heat-insulating plate, comprise outer barrier layer, inner barrier layer, stalk heat preservation core layer and getter, siccative, its thermal conductivity is 5mW/mK, and density is 200kg/m
3.Heat preservation core layer is 100kg/m by natural packing state lower density
3rice straw composition, rice straw element length is 60mm, and porosity ratio is 75%, and moisture content is 1.6%.Outer barrier layer is the composite membrane bondd through Bond by fibre cloth, aluminium foil, PET film, PA film and PE film, and inner barrier layer is glass-fiber-fabric, and vacuum heat-insulating plate air pressure inside is 0.1Pa.Active carbon getter and alumina particle siccative is had to concentrate certain being placed in heat preservation core layer in barrier layer.
Above are only two embodiments of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading the scope of protection of the invention.In every case be the content not departing from technical solution of the present invention, any type of simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. stalk is a vacuum heat-insulating plate for core, and thermal conductivity is 2.5 ~ 5.5mW/mK, it is characterized in that described vacuum heat-insulating plate is made up of outer barrier layer, inner barrier layer, stalk heat preservation core layer and getter, siccative.
2. vacuum heat-insulating plate according to claim 1, is characterized in that described vacuum heat-insulating plate density is 120 ~ 220kg/m
3.
3. vacuum heat-insulating plate according to claim 1, is characterized in that described vacuum heat-insulating plate air pressure inside is 0.1 ~ 100Pa.
4. vacuum heat-insulating plate according to claim 1, is characterized in that described outer barrier layer is the composite membrane bondd through Bond by fibre cloth, aluminium foil, PET film, PA film and PE film.
5. vacuum heat-insulating plate according to claim 1, is characterized in that described outer barrier layer is the composite membrane bondd through Bond by aluminium foil, PET film and PE film.
6. vacuum heat-insulating plate according to claim 1, is characterized in that described inner barrier layer is plastic film, glass-fiber-fabric, nonwovens, directly contacts with core.
7. vacuum heat-insulating plate according to claim 1, is characterized in that described outer barrier layer is coated with liquid silastic, polyurethane, PE film.
8. vacuum heat-insulating plate according to claim 1, it is characterized in that described stalk heat preservation core layer be in rice straw, straw, reed rod, cornstalk any one, the combination of two or three.
9. the vacuum heat-insulating plate according to claim 1 and 8, is characterized in that described heat preservation core layer natural deposited dry density is 30 ~ 150kg/m
3, stalk element length is 5 ~ 100mm, and porosity ratio is 75 ~ 93%, and moisture content is 0.05 ~ 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687179.8A CN104712883A (en) | 2013-12-13 | 2013-12-13 | Vacuum insulated panel with straw as core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687179.8A CN104712883A (en) | 2013-12-13 | 2013-12-13 | Vacuum insulated panel with straw as core material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712883A true CN104712883A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310687179.8A Pending CN104712883A (en) | 2013-12-13 | 2013-12-13 | Vacuum insulated panel with straw as core material |
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| Country | Link |
|---|---|
| CN (1) | CN104712883A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352881A (en) * | 2015-12-18 | 2016-02-24 | 青岛科瑞新型环保材料有限公司 | Vacuum insulation panel and aging test system thereof |
| CN105570620A (en) * | 2016-01-19 | 2016-05-11 | 南京航空航天大学 | High-temperature-resistant cold-insulation double-faced composite vacuum heat-insulating board |
| CN108086505A (en) * | 2018-01-25 | 2018-05-29 | 安徽百特新材料科技有限公司 | A kind of novel vacuum heat-insulating board |
| TWI659177B (en) * | 2017-07-25 | 2019-05-11 | 日商三菱電機股份有限公司 | Vacuum insulation material, insulation box and manufacturing method of vacuum insulation material |
| CN110002837A (en) * | 2019-04-26 | 2019-07-12 | 陈亚国 | Biology base fiber composite plate and preparation method thereof |
| CN110549701A (en) * | 2019-08-29 | 2019-12-10 | 苏州宏久航空防热材料科技有限公司 | Puncture-resistant vacuum insulation panel for building |
| CN112610806A (en) * | 2020-12-22 | 2021-04-06 | 上海海事大学 | Vacuum insulation panel adopting waste cotton fibers as core materials and preparation method thereof |
| CN112747194A (en) * | 2020-12-25 | 2021-05-04 | 福建赛特冷链科技有限公司 | Sealed ring type 3D vacuum insulated panel and heat-insulating container |
-
2013
- 2013-12-13 CN CN201310687179.8A patent/CN104712883A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352881A (en) * | 2015-12-18 | 2016-02-24 | 青岛科瑞新型环保材料有限公司 | Vacuum insulation panel and aging test system thereof |
| CN105352881B (en) * | 2015-12-18 | 2019-03-15 | 青岛科瑞新型环保材料集团有限公司 | A kind of vacuum heat-insulating plate and its aging testing system |
| CN105570620A (en) * | 2016-01-19 | 2016-05-11 | 南京航空航天大学 | High-temperature-resistant cold-insulation double-faced composite vacuum heat-insulating board |
| TWI659177B (en) * | 2017-07-25 | 2019-05-11 | 日商三菱電機股份有限公司 | Vacuum insulation material, insulation box and manufacturing method of vacuum insulation material |
| CN108086505A (en) * | 2018-01-25 | 2018-05-29 | 安徽百特新材料科技有限公司 | A kind of novel vacuum heat-insulating board |
| CN110002837A (en) * | 2019-04-26 | 2019-07-12 | 陈亚国 | Biology base fiber composite plate and preparation method thereof |
| CN110002837B (en) * | 2019-04-26 | 2021-06-25 | 陈亚国 | Bio-based fiber composite board and preparation method thereof |
| CN110549701A (en) * | 2019-08-29 | 2019-12-10 | 苏州宏久航空防热材料科技有限公司 | Puncture-resistant vacuum insulation panel for building |
| CN112610806A (en) * | 2020-12-22 | 2021-04-06 | 上海海事大学 | Vacuum insulation panel adopting waste cotton fibers as core materials and preparation method thereof |
| CN112747194A (en) * | 2020-12-25 | 2021-05-04 | 福建赛特冷链科技有限公司 | Sealed ring type 3D vacuum insulated panel and heat-insulating container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |
|
| WD01 | Invention patent application deemed withdrawn after publication |