CN101787198A - Composite heat-insulating material and preparation method and device for the preparation method - Google Patents
Composite heat-insulating material and preparation method and device for the preparation method Download PDFInfo
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- CN101787198A CN101787198A CN201010028122A CN201010028122A CN101787198A CN 101787198 A CN101787198 A CN 101787198A CN 201010028122 A CN201010028122 A CN 201010028122A CN 201010028122 A CN201010028122 A CN 201010028122A CN 101787198 A CN101787198 A CN 101787198A
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Abstract
The invention relates to a composite heat-insulating material, comprising the following ingredients by weight percent: 50-60% of HCFC141b conjugate polyether, 1-5% of aluminum powder, and 35-45% of powder A, wherein the powder A comprises 400-mesh powder A and 600-meshes powder A, accounting for 15-20% and 80-85% of the total weight of the powder A by weight percent; and the powder A is one of mica powder, expanded perlite powder, asbestos powder or rock wool powder. Based on existing general polyurethane foaming technology, HCFC141b conjugate polyether is compressed by a polyurethane spraying machine to spray and foam, and another micro-powder heat-insulating material (e. g. aluminum powder box A powder) is filled in the foamed HCFC141b conjugate polyether material, so that pore space of the foaming body is filled by the micro-powder heat-insulating material to improve density greatly, so that the resistance is increased in convection heat transfer process, thereby realizing better heat insulation and heat preservation effect.
Description
Technical field
The present invention relates to the technical field of heat-insulation material and preparation thereof, be specifically related to a kind of composite insulation material and the preparation method of solar water heater water tank insulation and device of realizing this preparation method of can be used for.
Background technology
For insulation, prior art adopts low vacuum (102～105pa) heat preserving methods or pile up the formula heat preserving method with lagging material usually to the insulation of about 0 ℃～150 ℃ of low temperature, if adopt the insulation of lagging material accumulation formula, then heat insulation effect depends on selecting for use of lagging material and ulking thickness.With regard to industry, all adopt the polyurethane foam insulation such as solar water heater water tank, heat insulation effect depends on foaming density (porosity) and ulking thickness, receptor material self reason density can only change in certain scope, as too much raising density, must increase the container material die, and solar water heater water tank material wall thickness is all between 0.5～0.6 millimeter, thermal insulation layer unit weight is generally at 27～29kg/m
2, depth of foam is about 50～60 millimeters, and uses nearly 20 years.
Known heat transfer, adiabatic process are with thermal conduction, convection current, and radiation mode carries out, and material itself is depended in thermal conduction, are 0.035～0.04W/m as the polyurethane material thermal conductivity
2K, convection current, radiative transfer depend on piles up the material porosity, the two all depends on the ulking thickness and the temperature difference density (aperture is large and small), such as not having perfect black body with regard to the radiative transfer occurring in nature, but perfect black body can be made with manual method, be called " perfect black body model ", be called for short by " black matrix model ".On a hollow body wall, open an aperture, being mapped to ray on the aperture enters in the hollow body and is repeatedly absorbed, reflects, the last ray that reflects again via aperture also is very faint, can ignore, at this moment the specific absorption of aperture approaches 1, can obviously find out after doubly amplifying by N with regard to polyurethane foaming body it constitute with discontinuous a lot of micropores and between the Kong Yukong by it is perforation behind N the hole.Simultaneously can assert that also the polyurethane foam body heat transferring is based on transmission of heat by convection.
In traditional socio-economic development pattern, economic growth is to be prerequisite with the mass consumption energy, and the energy-saving insulating technique between 0～100 ℃ does not cause the attention that people are enough at all for a long time.Used (envrionment temperature nearly 20 years such as the insulation of solar water heater water tank, its temperature difference of water temperature is at 50 ℃～60 ℃ in the water tank, temperature reduces by 12 ℃～15 ℃ in 12 hours water tanks) still using, energy supply and demand is particularly thorny, impel people to study, inquire into, yet improve one to two order of magnitude on the solar water container thermal-insulating scheme that uses at present, the technology of not seeking higher more smart renewal is not all right at all.
Summary of the invention
In view of above-mentioned weak point, the object of the present invention is to provide a kind of thermal conductivity little, the composite insulation material of high insulating effect and preparation method and the device of realizing this preparation method.
In order to reach above-mentioned wood, the present invention adopted following technical scheme:
A kind of composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
A powder 35%-45%:
Described by weight percentage A powder comprises and accounts for its total amount:
400 order A powder 15%-20%
600 order A powder 80%-85%
Described A powder is selected from a kind of in mica powder, swelling perlite powder, asbestos powder or the rock wool.
In the component of above-mentioned composite insulation material, the HCFC141b combined polyether is the finished product that adopts Luoyang, Changzhou Wujin heat insulating material factory to produce.
Be used to prepare the device of composite insulation material, this device includes the polyurethane coating machine, and the venturi-type jet-type feeder that is installed at polyurethane coating machine spray gun jet hole.
The method for preparing composite insulation material, this preparation method comprises: the HCFC141b combined polyether of said ratio component is entered pressure expansion operation in the polyurethane coating machine, the operation that the A powder and the aluminium powder of said ratio component entered venturi-type jet-type feeder, each aforementioned component thorough mixing is droplet-like from the ejection of venturi-type jet-type feeder spray jet, coagulation forming.
The present invention is according to existing current polyurethane foam technology, be to foam by compression of polyurethane coating machine and injection with the HCFC141b combined polyether, the liquid foam material that high-velocity jet goes out is just given and is adopted jet current principle venturi-type jet-type feeder introducing another kind insulation powder to become possibility.
The present invention has adopted the jet apparatus of custom-designed band Venturi meter, promptly locate to connect powder bucket at " the larynx neck " of Venturi meter, be configured to venturi-type jet-type feeder, the liquid that its high-velocity jet that enters Venturi meter goes out (liquid behind the HCFC141b combined polyether pressure expansion) sucks powder automatically and mixes at the Venturi meter expansion section of venturi-type jet-type feeder.
Principle of the present invention is: in the thermal insulation material that can foam, dash and fill out another kind of micro mist attitude thermal insulation material, filling the foam hole, greatly improve density, make in the transmission of heat by convection process, resistance increases, thus its adiabatic heat insulating effect is better.
Beneficial effect of the present invention is: thermal conductivity of the present invention is little, high insulating effect, and cost of manufacture is low.
Description of drawings
Fig. 1 prepares apparatus structure synoptic diagram of the present invention.
Fig. 2 venturi-type jet-type feeder structural representation.
Among the figure: 1. polyurethane coating machine spray gun nozzle; 2. venturi-type jet-type feeder; 1.1. opening for feed; 2.1 powder bucket; 2.2. Venturi meter; 2.3. Venturi meter expansion section; 2.4. spray jet.
Embodiment
Further specify the present invention below by embodiment and Comparative Examples:
Embodiment 1
A kind of composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
Mica powder 35%-45%;
Described by weight percentage mica powder comprises and accounts for its total amount:
400 order mica powder 15%-20%
600 order mica powder 80%-85%
The opening for feed 1.1 of HCFC141b combined polyether from the polyurethane coating machine of said ratio component added, carry out the pressure expansion operation, simultaneously with the powder bucket 2.1 of the venturi-type jet-type feeder 2 of packing into behind the mica powder of said ratio component and the aluminium powder thorough mixing, the liquid (liquid behind the HCFC141b combined polyether pressure expansion) that go out from polyurethane coating machine spray gun nozzle 1 high-velocity jet this moment enters in the Venturi meter 2.2 of venturi-type jet-type feeder 2, suck mica powder and al powder mixt in the venturi-type jet-type feeder powder bucket 2.1 simultaneously in the Venturi meter 2.2, micro mist attitude mica powder and al powder mixt are dashed evenly and fully to be filled in the HCFC141b combined polyether of foaming, each aforementioned component is droplet-like from 2.4 ejections of venturi-type jet-type feeder spray jet at Venturi meter expansion section 2.3 thorough mixing of venturi-type jet-type feeder, the final set moulding obtains composite insulation material.
Embodiment 2
A kind of composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
Swelling perlite powder 35%-45%;
Described by weight percentage mica powder comprises and accounts for its total amount:
400 order swelling perlite powder 15%-20%
600 order swelling perlite powder 80%-85%
Preparation technology is identical with the foregoing description 1 preparation technology.
Embodiment 3
A kind of composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
Asbestos powder 35%-45%;
Described by weight percentage mica powder comprises and accounts for its total amount:
400 order asbestos powder 15%-20%
600 order asbestos powder 80%-85%
Preparation technology is identical with the foregoing description 1 preparation technology.
Embodiment 4
A kind of composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
Rock wool 35%-45%;
Described by weight percentage mica powder comprises and accounts for its total amount:
400 order rock wool 15%-20%
600 order rock wool 80%-85%
Preparation technology is identical with the foregoing description 1 preparation technology.
To be used to prepare solar water heater water tank by the composite insulation material that above-mentioned prescription and preparation technology obtain, its solar water heater water tank comparative test result under the same conditions is as follows:
Test method adopts GB/T18708-2002 " determining of thermal storage water tank's heat waste ", and standard code is: heat waste factor≤22W/ (m
3.K)
1. under the normal condition, answer thermal storage water tank's polyurethane foaming body ulking thickness 55mm, accumulation horizon unit weight 29kg/m
3, survey to such an extent that the heat waste factor is≤22W/ (m
3.K)
2. adopt embodiment 1, survey to such an extent that the heat waste factor is≤8.2W/ (m
3.K)
3. adopt embodiment 2, survey to such an extent that the heat waste factor is≤8.7W/ (m
3.K)
4. adopt embodiment 3, survey to such an extent that the heat waste factor is≤8.9W/ (m
3.K)
5. adopt embodiment 4, survey to such an extent that the heat waste factor is≤9.3W/ (m
3.K)
Adopt embodiment 1-4, cost decline 30%-45%.
Among the present invention, aluminium powder, mica powder have extremely strong reflex action to infrared rays, other material filling the foam hole, greatly improve density, make in the transmission of heat by convection process, resistance increases.
When this composite insulation material is used for the test of real life attemperater, the water temperature temperature difference is between 50 ℃～60 ℃ in envrionment temperature and the water tank, went through 48 hours, water temperature is only fallen about 10 ℃ in the water tank, make the heat insulation effect of protosun energy water-heater water tank improve 2-3 order of magnitude multiple, and on thermal insulation material, opened up a brand-new research direction.
Claims (4)
1. composite insulation material, this composite insulation material is composed of the following components by weight percentage:
HCFC141b combined polyether 50%-60%
Aluminium powder 1%-5%
A powder 35%-45%;
Described by weight percentage A powder comprises and accounts for its total amount:
400 order A powder 15%-20%
600 order A powder 80%-85%.
2. composite insulation material according to claim 1 is characterized in that, described A powder is selected from a kind of in mica powder, swelling perlite powder, asbestos powder or the rock wool.
3. be used to prepare the device of the described composite insulation material of claim 1, it is characterized in that: this device includes the polyurethane coating machine, and the venturi-type jet-type feeder that is installed at polyurethane coating machine spray gun jet hole.
4. the method for preparing the described composite insulation material of claim 1, it is characterized in that, this preparation method comprises: the HCFC141b combined polyether of the described proportioning component of claim 1 is entered pressure expansion operation in the polyurethane coating machine as claimed in claim 3, the operation that the A powder and the aluminium powder of the described proportioning component of claim 1 entered venturi-type jet-type feeder as claimed in claim 3, each aforementioned component thorough mixing is droplet-like from the ejection of venturi-type jet-type feeder spray jet, coagulation forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010028122A CN101787198A (en) | 2010-01-19 | 2010-01-19 | Composite heat-insulating material and preparation method and device for the preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010028122A CN101787198A (en) | 2010-01-19 | 2010-01-19 | Composite heat-insulating material and preparation method and device for the preparation method |
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| CN101787198A true CN101787198A (en) | 2010-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672415A (en) * | 2015-02-09 | 2015-06-03 | 查晓雄 | Polyurethane-rock wool insulating and fireproof material and preparation method thereof |
| CN111559043A (en) * | 2020-06-02 | 2020-08-21 | 镇江中化聚氨酯工业设备有限公司 | Multi-component foaming machine system for sandwich board production line |
-
2010
- 2010-01-19 CN CN201010028122A patent/CN101787198A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672415A (en) * | 2015-02-09 | 2015-06-03 | 查晓雄 | Polyurethane-rock wool insulating and fireproof material and preparation method thereof |
| CN111559043A (en) * | 2020-06-02 | 2020-08-21 | 镇江中化聚氨酯工业设备有限公司 | Multi-component foaming machine system for sandwich board production line |
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Application publication date: 20100728 |