CN108383544A - Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance - Google Patents
Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance Download PDFInfo
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- CN108383544A CN108383544A CN201810329701.8A CN201810329701A CN108383544A CN 108383544 A CN108383544 A CN 108383544A CN 201810329701 A CN201810329701 A CN 201810329701A CN 108383544 A CN108383544 A CN 108383544A
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- Prior art keywords
- heat
- material composition
- barrier material
- insulating mattress
- heat insulating
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Fibers (AREA)
Abstract
The present invention disclose a kind of heat-barrier material composition, a kind of preparation method of heat insulating mattress, heat insulating mattress and the application heat insulating mattress made from the preparation method by the heat insulating mattress cooking appliance.Wherein, by weight percentage, the heat-barrier material composition includes fumed silica, and 20% 70%；High silica fiber, 2% 20%.Heat insulating mattress prepared by technical scheme of the present invention has the advantages that good heat-insulation effect, hydroscopicity are low and packing cost is low.
Description
Technical field
The present invention relates to heat-barrier material technical field, more particularly to a kind of heat-barrier material composition, a kind of system of heat insulating mattress
The cooking appliance of heat insulating mattress made from Preparation Method, the preparation method by the heat insulating mattress and the application heat insulating mattress.
Background technology
Currently, in order to reduce influence of the heat-generating disc to bottom case of electric ceramic heaters high temperature, it generally can be in bottom case, namely generate heat
Heat insulating mattress is arranged in the lower section of disk, wherein heat insulating mattress is typically to be passed through the side such as to be stirred, suppress, toast by a variety of refractory materials
Method machine-shaping obtains, however, in the preparation of heat insulating mattress, often because the selection of raw material is improper or ratio using formula
Example is improper, causes the heat insulating mattress thermal insulation effect prepared poor, and its hydroscopicity is excessively high, does not meet the proof voltage requirement of safety,
It needs to carry out damp-prrof packing during its transportation simultaneously, i.e. packing cost is higher.
Invention content
The main object of the present invention is to provide a kind of heat-barrier material composition, it is intended to can prepare good heat-insulation effect, inhale
The heat insulating mattress that wet rate is low and packing cost is low.
To achieve the above object, heat-barrier material composition proposed by the present invention includes vapor phase method two by weight percentage
Silica, 20%-70%；High silica fiber, 2%-20%.
Optionally, the specific surface area of the fumed silica is in 150-200m2Between/g.
Optionally, the diameter of the high silica fiber is between 10-13 μm, and length is between 6-12mm.
Optionally, by weight percentage, the heat-barrier material composition further includes aluminium silicate powder 10%-50%；With/
Or, the heat-barrier material composition further includes silicon carbide 10%-40%；And/or the heat-barrier material composition further includes auxiliary
Agent water 5%-40%.
Optionally, by weight percentage, the heat-barrier material composition further includes glass fibre 2%-20%.
Optionally, the weight percentage ranges of the fumed silica are 20-55%.
The invention also provides a kind of preparation methods of heat insulating mattress, and the preparation method comprises the following steps：It provides as above
The heat-barrier material composition；The fumed silica and the high silica fiber are mixed, mixed powder is obtained；To institute
It states mixed powder and carries out die casting processing, obtain the heat insulating mattress.
Optionally, the mixing fumed silica and when high silica fiber, further includes to the fumed silica
With the step of auxiliary agent is added in high silica fiber, to obtain the mixing sub-material, wherein the auxiliary agent is the silicon carbide, institute
State at least one of aluminium silicate powder and the glass fibre.
The invention also provides a kind of heat insulating mattress, the heat insulating mattress is obtained by above-mentioned preparation method.
The application also proposed a kind of cooking appliance, and the cooking appliance includes heat-generating disc and heat insulating mattress as described above,
The heat insulating mattress is set to the lower section of the heat-generating disc.
Technical scheme of the present invention, by using the heat-barrier material composition of fumed silica and high silica fiber,
It can be prepared into heat insulating mattress according to a certain percentage, since fumed silica has preferable heat insulation, high silica fiber
With preferable heat-resisting quantity, therefore the heat insulating mattress that thus prepared by heat-barrier material composition has preferable thermal insulation effect, so as to
To save electric energy；In addition, high silica fiber can also reduce the hydroscopicity of heat insulating mattress, so that the product meets the resistance to electricity of safety
Pressure request, meanwhile, damp-prrof packing of the product in transportational process is also can avoid, to reduce packing cost.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
The every other embodiment that logical technical staff is obtained without creative efforts belongs to what the present invention protected
Range.
In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, will be understood that this technical side when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of heat-barrier material composition, and by weight percentage, which includes gas phase
Method silica, 20%-70%；High silica fiber, 2%-20%.
Fumed silica is a kind of transparent heat-insulated material of nanoporous, have high porosity, small average pore size, greatly
Specific surface area, low-density and lower thermal conductivity namely heat insulation are preferable；High silica fiber is a kind of high temperature resistant inorganic
Fiber, thermal conductivity is relatively low, and the thermal insulation effect of heat insulating mattress can be improved after addition, in addition, high silica fiber can also drop after being added
Its low hydroscopicity, but usage amount is suitable, can influence the structure of heat insulating mattress too much.
Accordingly, it is to be understood that, technical scheme of the present invention, by using fumed silica and high silica fiber
Heat-barrier material composition can be prepared into heat insulating mattress according to a certain percentage, since fumed silica is with preferable heat-insulated
Effect, high silica fiber has preferable heat-resisting quantity, therefore the heat insulating mattress that thus prepared by heat-barrier material composition has preferably
Thermal insulation effect, so as to save electric energy；In addition, high silica fiber can also reduce the hydroscopicity of heat insulating mattress, so that the production
Product meet the proof voltage requirement of safety, meanwhile, damp-prrof packing of the product in transportational process is also can avoid, to reduce packet
Dress up this.
Preferably, the specific surface area of fumed silica is in 150-200m2Between/g.
Preferably, the diameter of high silica fiber is between 10-13 μm, and length is between 6-12mm.
By weight percentage, heat-barrier material composition further includes aluminium silicate powder 10%-50%；Aluminium silicate powder also have compared with
Good thermal insulation heat resistance, can further improve the heat resistance of heat insulating mattress.
Heat-barrier material composition further includes silicon carbide 10%-40%；Silicon carbide is a kind of infrared light screening agent, is had preferable
Thermal insulation performance, in addition, the heat insulating mattress for preparing after silicon carbide, which is added, also has preferable appearance.
Heat-barrier material composition further includes adjuvant water 5%-40%.During preparing heat insulating mattress, it can be added certain
The adjuvant water of amount.
By weight percentage, the heat-barrier material composition further includes glass fibre 2%-20%.Glass fibre also has
There is stronger heat resistance, and mechanical strength is higher, the thermal insulation effect and intensity of the heat insulating mattress of preparation are can further improve after addition.
In addition, the cost of glass fibre is lower than the cost of high silica fiber, it is usually added into the mixing of high silica fiber and glass fibre
Object.
Preferably, the diameter range of glass fibre is between 10-13 μm, and length is between 6-12mm.
Preferably, the weight percentage ranges of fumed silica are 20-55%.This proportioning prepare heat insulating mattress every
Temp effect is more preferable.
The present invention also proposes that a kind of preparation method of heat insulating mattress, the preparation method include the following steps：
Heat-barrier material composition is provided, by weight percentage, which includes fumed silica,
20%-70%；High silica fiber, 2%-20%；
Fumed silica and high silica fiber are mixed, mixed powder is obtained；
Die casting processing is carried out to mixed powder, obtains heat insulating mattress.
Specifically, first, corresponding fumed silica and high silica fiber are weighed according to constant weight percentage；So
It is added into agitator tank successively afterwards, and is stirred 20-25 minutes under room temperature, keeps its mixing abundant, to obtain mixed powder；
Finally, mixed powder is put into the specific mold of heat insulating mattress, and using the hydraulic press of 60T-100T ranges in 25MPa-50MPa
Pressure limit, mixed powder is cast into heat insulating mattress under the time range of 0.1s-4s.Since the heat-barrier material composition has
Preferable thermal insulation effect and lower hydroscopicity, the then heat insulating mattress being prepared also have preferable thermal insulation effect and lower suction
Wet rate.
Preferably, further include to the fumed silica and height when mixing fumed silica and high silica fiber
The step of auxiliary agent is added in silica fiber, to obtain mixing sub-material, wherein auxiliary agent is aluminium silicate powder, silicon carbide and glass fibre
At least one of.
Specifically, corresponding auxiliary agent is weighed according to constant weight percentage respectively, and is added to fills vapor phase method two successively
In the agitator tank of silica and high silica fiber, and be stirred for being uniformly mixed and obtain mixed powder, and repeat subsequent step with
Prepare heat insulating mattress.The addition of auxiliary agent can further improve the thermal insulation effect of heat insulating mattress and reduce its hydroscopicity, so that system
Standby heat insulating mattress meets the proof voltage requirement of safety.In addition, the especially addition of silicon carbide and/or aluminium silicate powder, can improve
The intensity of heat insulating mattress.
The present invention also proposes a kind of heat insulating mattress, which obtained by above-mentioned preparation method.
The present invention also proposes a kind of cooking appliance, which includes heat-generating disc and heat insulating mattress as described above, heat-insulated
Pad is set on the lower section of heat-generating disc.The cooking appliance can be electric ceramic heaters, health-promotion kettle, electromagnetic oven etc..
Heat insulating mattress of the present invention and preparation method thereof is specifically described below by way of specific embodiment.
Embodiment 1
Each raw material is formulated as follows by weight percentage：
Fumed silica, 90%；
High silica fiber, 10%；
In the present embodiment, the specific surface area of fumed silica is 200m2/g；A diameter of 12 μm of high silica fiber；
Length is 10mm, a diameter of 12 μm of glass fibre；Length is 10mm.
Each raw material is added into agitator tank successively, and is stirred 20 minutes under room temperature, keeps its mixing abundant, is mixed
Powder.It should be noted that in whipping process, adjuvant water 13% can be added.Then, mixed powder input heat insulating mattress is special
In fixed mold, and using the hydraulic press of 60T in the pressure of 25MPa, 3s time by mixed powder die casting, you can obtain heat-insulated
Pad.
Embodiment 2
Each raw material is formulated as follows by weight percentage：
Fumed silica, 40%；
High silica fiber, 2%；
Aluminium silicate powder, 24%；
Silicon carbide, 32%；
Glass fibre, 2%.
In the present embodiment, the specific surface area of fumed silica is 200m2/g；A diameter of 12 μm of high silica fiber；
Length is 10mm, a diameter of 12 μm of glass fibre；Length is 10mm.
Each raw material is added into agitator tank successively, and is stirred 20 minutes under room temperature, keeps its mixing abundant, is mixed
Powder.It should be noted that in whipping process, adjuvant water 13% can be added.Then, mixed powder input heat insulating mattress is special
In fixed mold, and using the hydraulic press of 60T in the pressure of 25MPa, 3s time by mixed powder die casting, you can obtain heat-insulated
Pad.
Embodiment 3
Each raw material is formulated as follows by weight percentage：
Fumed silica, 35%；
High silica fiber, 2%；
Aluminium silicate powder, 30%；
Silicon carbide, 30%；
Glass fibre, 3%.
In the present embodiment, the specific surface area of fumed silica is 200m2/g；A diameter of 12 μm of high silica fiber；
Length is 10mm, a diameter of 12 μm of glass fibre；Length is 10mm.
Each raw material is added into agitator tank successively, and is stirred 20 minutes under room temperature, keeps its mixing abundant, is mixed
Powder.It should be noted that in whipping process, adjuvant water 15% can be added.Then, mixed powder input heat insulating mattress is special
In fixed mold, and using the hydraulic press of 60T in the pressure of 25MPa, 2.5s time by mixed powder die casting, you can obtain every
Heat pad.
Embodiment 4
Each raw material is formulated as follows by weight percentage：
Fumed silica, 45%；
High silica fiber, 3%；
Aluminium silicate powder, 21%；
Silicon carbide, 27%；
Glass fibre, 4%.
In the present embodiment, the specific surface area of fumed silica is 200m2/g；A diameter of 12 μm of high silica fiber；
Length is 10mm, a diameter of 12 μm of glass fibre；Length is 10mm.
Each raw material is added into agitator tank successively, and is stirred 20 minutes under room temperature, keeps its mixing abundant, is mixed
Powder.It should be noted that in whipping process, adjuvant water 15% can be added.Then, mixed powder input heat insulating mattress is special
In fixed mold, and using the hydraulic press of 60T in the pressure of 25MPa, 3s time by mixed powder die casting, you can obtain heat-insulated
Pad.
Embodiment 5
Each raw material is formulated as follows by weight percentage：
Fumed silica, 50%；
High silica fiber, 3%；
Aluminium silicate powder, 20%；
Silicon carbide, 22%；
Glass fibre, 5%.
In the present embodiment, the specific surface area of fumed silica is 200m2/g；A diameter of 12 μm of high silica fiber；
Length is 10mm, a diameter of 12 μm of glass fibre；Length is 10mm.
Each raw material is added into agitator tank successively, and is stirred 20 minutes under room temperature, keeps its mixing abundant, is mixed
Powder.It should be noted that in whipping process, adjuvant water 17% can be added.Then, mixed powder input heat insulating mattress is special
In fixed mold, and using the hydraulic press of 60T in the pressure of 25MPa, 2s time by mixed powder die casting, you can obtain heat-insulated
Pad.
Furthermore, it is necessary to which explanation, (hair is installed to the bottom case of electric ceramic heaters to the heat insulating mattress that embodiment 1 to 4 is prepared
The lower section of hot plate) to be assembled into electric ceramic heaters, and electric ceramic heaters are tested for the property.
First, thermal insulation test is carried out to the electric ceramic heaters, i.e., electric ceramic heaters are switched on after sixty minutes, tested and record heat insulating mattress and is straight
Temperature value at diameter a quarter.
Secondly, hydroscopicity test is carried out to the electric ceramic heaters, i.e., weighed to the heat insulating mattress after progress thermal insulation test, then by it
It is 25 DEG C to be put into temperature, in the climatic chamber that humidity is 93%, takes out after 48 hours and weighs again, and record its gain in weight
Data.
Again, safety high voltage dielectric test is carried out to the electric ceramic heaters, i.e., when debugging voltage is 300V, uses test equipment
Its registration record that leaks electricity is tested, when then debugging voltage value to 1250V, is tested using test equipment and records its electric leakage and shown
Number.
Above-mentioned test data is counted, and is recorded in table 1.Similarly, thermal insulation test also is carried out to traditional heat insulating mattress, led to
Test is crossed it is found that traditional heat-insulated electric ceramic heaters that are padded on are switched on after sixty minutes, temperature is 287 DEG C；Hydroscopicity survey is also carried out simultaneously
Examination, by test it is found that traditional heat insulating mattress gain in weight is 11.8g；Safety high voltage dielectric test is also carried out simultaneously, passes through survey
It is found that when test voltage is 300V, leakage current is shown as 3.84mA for examination, when test voltage is adjusted to 1250V or more, because
Leakage current can not show registration more than test equipment upper limit 10.5mA itself.
It can be seen from Table 1 that in five kinds of embodiments, the present invention is heat-insulated to be padded on electric ceramic heaters booting after sixty minutes, thermal insulation
Raising with obvious effects；It is tested by hydroscopicity, in five kinds of embodiments, the gain in weight of heat insulating mattress of the present invention is intended to than traditional
(11.8g) is much lower namely its hydroscopicity is substantially reduced；In five kinds of embodiments, heat insulating mattress of the present invention meets the resistance to electricity of safety
Pressure request, and its high voltage performance significantly improves.Also, the heat insulating mattress appearance that embodiment 1 to 5 is prepared is good.
It should be understood that can be seen that by embodiment 1 to 5, by adjusting each component in heat-barrier material composition ratio and
Dosage can be prepared that thermal insulation effect is preferable, hydroscopicity is relatively low and meet the heat insulating mattress of the proof voltage requirement of safety, and by
The various performances of the more traditional electric ceramic heaters of electric ceramic heaters of this heat insulating mattress assembling will be got well, that is, the thermal insulation effect of the heat insulating mattress of the present invention
Fruit and safety performance are remarkably improved and its hydroscopicity is significantly reduced.
In addition, the ingredient of heat-barrier material composition of the present invention meets ROHS authentication requestings.Heat insulating mattress of the present invention also have compared with
Big intensity, service life is also more traditional to be grown；The manufacturing cost of the heat insulating mattress is relatively low simultaneously.
1 each embodiment heat insulating mattress the performance test results table of table
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (10)
1. a kind of heat-barrier material composition, which is characterized in that by weight percentage, the heat-barrier material composition includes：
Fumed silica, 20%-70%；
High silica fiber, 2%-20%.
2. heat-barrier material composition as described in claim 1, which is characterized in that the specific surface area of the fumed silica
In 150-200m2Between/g.
3. heat-barrier material composition as described in claim 1, which is characterized in that the diameter of the high silica fiber is in 10-13 μ
Between m, length is between 6-12mm.
4. heat-barrier material composition as described in claim 1, which is characterized in that by weight percentage, the heat-barrier material
Composition further includes aluminium silicate powder 10%-50%；And/or the heat-barrier material composition further includes silicon carbide 10%-40%；
And/or the heat-barrier material composition further includes adjuvant water 5%-40%.
5. heat-barrier material composition as described in claim 1, which is characterized in that by weight percentage, the heat-barrier material
Composition further includes glass fibre 2%-20%.
6. the heat-barrier material composition as described in any one of claim 1 to 5, which is characterized in that the vapor phase method titanium dioxide
The weight percentage ranges of silicon are 20-55%.
7. a kind of preparation method of heat insulating mattress, which is characterized in that the preparation method comprises the following steps：
Such as heat-barrier material composition according to any one of claims 1 to 6 is provided；
The fumed silica and the high silica fiber are mixed, mixed powder is obtained；
Die casting processing is carried out to the mixed powder, obtains the heat insulating mattress.
8. the preparation method of heat insulating mattress as claimed in claim 7, which is characterized in that the mixing fumed silica and height
Further include the steps that the addition auxiliary agent into the fumed silica and high silica fiber when silica fiber, it is described mixed to obtain
Close sub-material, wherein the auxiliary agent is at least one of the silicon carbide, the aluminium silicate powder and described glass fibre.
9. a kind of heat insulating mattress, which is characterized in that the heat insulating mattress is by the preparation method as described in any one of claim 7 to 8
It obtains.
10. a kind of cooking appliance, the cooking appliance includes heat-generating disc and heat insulating mattress as claimed in claim 9, described heat-insulated
Pad is set on the lower section of the heat-generating disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329701.8A CN108383544A (en) | 2018-04-11 | 2018-04-11 | Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329701.8A CN108383544A (en) | 2018-04-11 | 2018-04-11 | Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance |
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| CN108383544A true CN108383544A (en) | 2018-08-10 |
Family
ID=63072820
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| CN201810329701.8A Pending CN108383544A (en) | 2018-04-11 | 2018-04-11 | Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance |
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| WO2020034647A1 (en) * | 2018-08-14 | 2020-02-20 | 广东美的厨房电器制造有限公司 | Heat insulation material and cooking device |
| CN112266228A (en) * | 2020-10-30 | 2021-01-26 | 深圳市鑫富达电器有限公司 | Heat insulation material composition, heat insulation pad, preparation method of heat insulation pad and cooking appliance |
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| WO2020034647A1 (en) * | 2018-08-14 | 2020-02-20 | 广东美的厨房电器制造有限公司 | Heat insulation material and cooking device |
| CN112266228A (en) * | 2020-10-30 | 2021-01-26 | 深圳市鑫富达电器有限公司 | Heat insulation material composition, heat insulation pad, preparation method of heat insulation pad and cooking appliance |
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Application publication date: 20180810 |