CN110317578A - Phase-change thermal storage silica gel, preparation method and applications - Google Patents
Phase-change thermal storage silica gel, preparation method and applications Download PDFInfo
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Abstract
Phase-change thermal storage silica gel, each component including following parts by weight: 20~70 parts of silica gel and modified 10~68 parts of heat absorption powders of phase transformation powder, contain suitable modified phase transformation powder, thus have excellent heat absorption and thermal storage performance, enthalpy of phase change reaches 15-200J/g, specific heat capacity has been more than 2.0J/gK, meet the demand of battery and capacitor to heat absorption and thermal storage performance, modified phase transformation powder has the function of heat-absorbing energy-accumulating, since phase transformation enthalpy is big, heating is slow, silica gel can absorb more heats, the heat that heat generating spot in battery and capacitor generates is quickly transferred in phase-change thermal storage silica gel, so that heat generating spot cooling is faster, the technical problem of battery and the fever of capacitor field can be well solved；And after phase transformation is powder-modified, phase transformation powder enters in micropore to be lockked securely, makes it under the high temperature conditions, will not from micropore separate out, solve the problems, such as that phase-change thermal storage silica gel is fuel-displaced, the stability and duration of heat accumulation are 4-5 times of similar product in the market.
Description
Technical field
The present invention relates to heat accumulation silica gel and preparation method thereof technical field more particularly to phase-change thermal storage silica gel, preparation method
And its application.
Background technique
With the miniaturization and lightweight of electronic product, it is desirable to which it greatly improves integrated level, and integrated level is higher, and heat dissipation is asked
Topic is also more serious.Gather to form hot spot so having heat in order to prevent, it is necessary to rapidly by the transfer of the heat of hot spot or
It stores, after product miniaturization, inner space is more narrow, generallys use the silica gel that Heat Conduction Material shifts heat
Shell, and current silica gel shell does not have heat storage function, reaches heat saturation soon, cannot achieve the lasting transfer of heat
And storage；
It is constituted for example, the lithium battery group of large capacity is combined the lithium battery monomer to link together by numerous warps in series and parallel, lithium
Battery pack can generate a large amount of thermal energy during charging and discharging, how these thermal energy are transmitted to silica gel heat sink material as soon as possible
On, so that lithium battery is reduced rapidly temperature；
Equally, capacitor, which works long hours, is easy to produce largely, and capacitor is more, generates heat more severe, how these thermal energy is use up
It is fast to be transmitted on silica gel heat sink material and urgent need to resolve point problem in industry.
However, the phenomenon of leakage, phase-change material separate out from matrix, on the one hand meeting can occur at high temperature for phase-change material
Cause the subsequent difficulty that molding is mixed to improve, on the other hand, after phase-change material separate out, phase-change thermal storage silicon can be made
The performance sharp fall of glue, influences its thermal storage performance.
Therefore, it is badly in need of providing a kind of phase-change thermal storage silica gel, preparation method and application, so as to solve the deficiencies in the prior art.
Summary of the invention
An object of the present invention is to provide a kind of phase-change thermal storage silica gel, so as to solve the deficiencies in the prior art.
Another object of the present invention is to provide the preparation methods of above-mentioned phase-change thermal storage silica gel.
Another object of the present invention is to provide the application of above-mentioned phase-change thermal storage silica gel.
To achieve the above object, the present invention adopts the following technical scheme that:
Phase-change thermal storage silica gel, each component including following parts by weight, 20~70 parts of silica gel and modified phase transformation powder 10~68
Part.
Preferably, the modified phase transformation raw powder's production technology is as follows: phase transformation powder being heated and is melted, then in fusing
Modifying agent is added in phase transformation powder, additive amount weight ratio is the 2%~40% of phase transformation powder, and powder is in water-bath or oil bath after mixing
Then shaker vibration is used in middle heat preservation, then use oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, obtain
The modification phase transformation powder.
Preferably, the phase transformation powder in paraffins, fatty acid, PE wax and polyethylene glycol any one or it is several
The combination of kind.
Preferably, the modifying agent is any in expanded graphite, nanometer titanium dioxide silicon powder and hollow microsphere powder
One or several kinds of combinations.
It preferably, further include 10~30 parts of fire retardant, the fire retardant is selected from phosphorus flame retardant, nitrogenated flame retardant and hydrogen-oxygen
Change any one in aluminium or several combinations.
It preferably, further include 1~20 part of conduction powder, the conduction powder is in aluminium oxide, boron nitride and aluminium nitride
Any one or several combinations.
It preferably, further include graphite, carbon nanotube and/or 1~20 part of graphene.
Preferably, the alkane carbon atom number of the paraffins is between 10-60.
The preparation method of phase-change thermal storage silica gel, includes the following steps, weighs each component according to formula,
Step 1, mixing mixing: by silica gel and modified 0.5~3h of phase transformation powder mixing mixing；
Step 2 squeezes out or is pressed and molded acquisition phase-change thermal storage silica gel.
The application of phase-change thermal storage silica gel, the phase-change thermal storage silica gel can be used for battery and capacitor.
Compared with prior art, phase-change thermal storage silica gel of the invention has the advantages that phase-change thermal storage of the invention
Silica gel, containing suitable modified phase transformation powder, enthalpy of phase change reaches 15-200J/g, and specific heat capacity has been more than 2.0J/gK, meets
The demand of battery and capacitor to heat absorption and thermal storage performance, modified phase transformation powder has the function of heat-absorbing energy-accumulating, since phase transformation enthalpy is big,
Heating is slow, and silica gel can absorb more heats, and the heat that the heat generating spot in battery and capacitor generates is quickly transferred to phase
Become in heat accumulation silica gel, so that heat generating spot cooling is faster, the technical problem of battery and the fever of capacitor field can be well solved；More
Importantly, phase transformation powder passes through modifier modification, modifying agent is bigger serface, the powder containing micropore, it is mixed it
Afterwards, specific surface area is increased, powder contains a large amount of micropore, and phase transformation powder enters in micropore to be lockked securely, makes it in height
Under the conditions of temperature, will not from micropore separate out, solve the problems, such as that phase-change thermal storage silica gel is fuel-displaced, not only improve only below at
The operability of type technique, it is often more important that, it can guarantee significantly it under the high temperature conditions, keep the steady of thermal storage performance for a long time
Fixed, with similar product phase transformation, the stability and duration of heat accumulation are 4-5 times of similar product in the market, even if making for a long time
With thermal storage performance decline is no more than 2-3%.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated, this is presently preferred embodiments of the present invention.
Embodiment 1
Phase-change thermal storage silica gel, each component including following parts by weight: 20 parts of silica gel and modified 10 parts of phase transformation powder；
The modified phase transformation raw powder's production technology is as follows: paraffins being heated and are melted, then in the paraffins of fusing
Expanded graphite is added, additive amount weight ratio is the 2% of paraffins, and powder is kept the temperature in water-bath or oil bath after mixing, then with vibration
Dynamic sieve vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase transformation
Powder.
Embodiment 2
Phase-change thermal storage silica gel, each component including following parts by weight: 70 parts of silica gel and modified 68 parts of phase transformation powder.
The modified phase transformation raw powder's production technology is as follows: 50 carbon atom paraffins being heated and are melted, then in fusing
Nanometer titanium dioxide silicon powder is added in 50 carbon atom paraffins, additive amount weight ratio is the 40% of 50 carbon atom paraffins, mixing
Powder is kept the temperature in water-bath or oil bath afterwards, then uses shaker vibration 4h or more, then uses oil-Absorbing Sheets oil suction, then with ball mill or
Sand mill grinds powder, obtains the modification phase transformation powder.
Embodiment 3
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel and modified 30 parts of phase transformation powder.
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Hollow microsphere powder is added, additive amount weight ratio is the 20% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing, then
With shaker vibration 4h or more, oil-Absorbing Sheets oil suction is then used, then grinds powder with ball mill or sand mill, obtains the modification
Phase transformation powder.
Embodiment 4
Phase-change thermal storage silica gel, each component including following parts by weight: 60 parts of silica gel and modified 50 parts of phase transformation powder；
The modified phase transformation raw powder's production technology is as follows: PE wax being heated and is melted, is then added in the PE wax of fusing
Nanometer titanium dioxide silicon powder, additive amount weight ratio are the 10% of PE wax, and powder is kept the temperature in water-bath or oil bath after mixing, is then used
Shaker vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase
Become powder.
Embodiment 5
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel and modified 30 parts of phase transformation powder；
The modified phase transformation raw powder's production technology is as follows: polyethylene glycol being heated and is melted, then in the poly- second two of fusing
Expanded graphite is added in alcohol, additive amount weight ratio is the 5% of polyethylene glycol, and powder is kept the temperature in water-bath or oil bath after mixing, so
Shaker vibration 4h or more is used afterwards, is then used oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, is obtained described change
Property phase transformation powder.
Embodiment 6
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 30 parts of phase transformation powder, the resistance of nitrogen system
10 parts of agent of combustion；
The modified phase transformation raw powder's production technology is as follows: heating paraffin being melted, is then added in the paraffin of fusing
Nanometer titanium dioxide silicon powder, additive amount weight ratio are the 12% of paraffin, and powder is kept the temperature in water-bath or oil bath after mixing, is then used
Shaker vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase
Become powder.
Embodiment 7
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 20 parts of phase transformation powder, the resistance of nitrogen system
10 parts of agent of combustion；
The modified phase transformation raw powder's production technology is as follows: 10 carbon atom paraffins being heated and are melted, then in fusing
Hollow microsphere powder is added in 10 carbon atom paraffins, additive amount weight ratio is the 40% of 10 carbon atom paraffins, powder after mixing
Body is kept the temperature in water-bath or oil bath, then uses shaker vibration 4h or more, then uses oil-Absorbing Sheets oil suction, then with ball mill or sand milling
Machine grinds powder, obtains the modification phase transformation powder.
Embodiment 8
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 30 parts of phase transformation powder, the resistance of phosphorus system
10 parts of agent of combustion；
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Nanometer titanium dioxide silicon powder is added, additive amount weight ratio is the 16% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing,
Then use shaker vibration 4h or more, then use oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, obtain described in
Modified phase transformation powder.
Embodiment 9
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 30 parts of phase transformation powder, the resistance of phosphorus system
Fire 10 parts of agent, 18 parts of carbon nanotube；
The modified phase transformation raw powder's production technology is as follows: heating paraffin being melted, is then added in the paraffin of fusing
Nanometer titanium dioxide silicon powder, additive amount weight ratio are the 22% of paraffin, and powder is kept the temperature in water-bath or oil bath after mixing, is then used
Shaker vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase
Become powder.
Embodiment 10
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 30 parts of phase transformation powder, the resistance of phosphorus system
Fire 10 parts of agent, 18 parts of aluminium oxide；
The modified phase transformation raw powder's production technology is as follows: 20 carbon atom paraffins being heated and are melted, then in fusing
Hollow microsphere powder is added in 20 carbon atom paraffins, additive amount weight ratio is the 6% of 20 carbon atom paraffins, powder after mixing
It is kept the temperature in water-bath or oil bath, then uses shaker vibration 4h or more, then use oil-Absorbing Sheets oil suction, then with ball mill or sand mill
Powder is ground, the modification phase transformation powder is obtained.
Embodiment 11
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silica gel, modified 30 parts of phase transformation powder, the resistance of phosphorus system
Fire 10 parts of agent, 18 parts of carbon nanotube；
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Nanometer titanium dioxide silicon powder is added, additive amount weight ratio is the 40% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing,
Then use shaker vibration 4h or more, then use oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, obtain described in
Modified phase transformation powder.
Embodiment 12
Phase-change thermal storage silica gel, each component including following parts by weight: 55 parts of silica gel, modified 33 parts of phase transformation powder, hydroxide
15 parts of aluminium, 8 parts of boron nitride；
The modified phase transformation raw powder's production technology is as follows: heating paraffin being melted, is then added in the paraffin of fusing
Nano expanded graphite, additive amount weight ratio are the 30% of paraffin, and powder is kept the temperature in water-bath or oil bath after mixing, then with vibration
Sieve vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase transformation powder
Body.
Embodiment 13
Phase-change thermal storage silica gel, each component including following parts by weight: 55 parts of silica gel, modified 33 parts of phase transformation powder, hydroxide
15 parts of aluminium, 8 parts of graphene；
The modified phase transformation raw powder's production technology is as follows: 20 carbon atom paraffins being heated and are melted, then in fusing
Nanometer titanium dioxide silicon powder is added in 20 carbon atom paraffins, additive amount weight ratio is the 28% of 20 carbon atom paraffins, mixing
Powder is kept the temperature in water-bath or oil bath afterwards, then uses shaker vibration 4h or more, then uses oil-Absorbing Sheets oil suction, then with ball mill or
Sand mill grinds powder, obtains the modification phase transformation powder.
Embodiment 14
Phase-change thermal storage silica gel, each component including following parts by weight: 55 parts of silica gel, modified 33 parts of phase transformation powder, hydroxide
15 parts of aluminium, 8 parts of graphite；
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Nanometer titanium dioxide silicon powder is added, additive amount weight ratio is the 38% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing,
Then use shaker vibration 4h or more, then use oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, obtain described in
Modified phase transformation powder.
Embodiment 15
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silicon rubber, modified 30 parts of phase transformation powder, phosphorus system
10 parts of fire retardant, 18 parts of carbon nanotube；
The modified phase transformation raw powder's production technology is as follows: heating paraffin being melted, is then added in the paraffin of fusing
Expanded graphite, additive amount weight ratio are the 8% of paraffin, and powder is kept the temperature in water-bath or oil bath after mixing, is then shaken with vibrating screen
Dynamic 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase transformation powder.
Embodiment 16
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silicon rubber, modified 30 parts of phase transformation powder, phosphorus system
10 parts of fire retardant, 18 parts of carbon nanotube；
The modified phase transformation raw powder's production technology is as follows: 20 carbon atom paraffins being heated and are melted, then in fusing
Hollow microsphere powder is added in 20 carbon atom paraffins, additive amount weight ratio is the 18% of 20 carbon atom paraffins, powder after mixing
Body is kept the temperature in water-bath or oil bath, then uses shaker vibration 4h or more, then uses oil-Absorbing Sheets oil suction, then with ball mill or sand milling
Machine grinds powder, obtains the modification phase transformation powder.
Embodiment 17
Phase-change thermal storage silica gel, each component including following parts by weight: 40 parts of silicon rubber, modified 30 parts of phase transformation powder, phosphorus system
10 parts of fire retardant, 18 parts of carbon nanotube；
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Nanometer titanium dioxide silicon powder is added, additive amount weight ratio is the 30% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing,
Then use shaker vibration 4h or more, then use oil-Absorbing Sheets oil suction, then grind powder with ball mill or sand mill, obtain described in
Modified phase transformation powder.
Embodiment 18
Phase-change thermal storage silica gel, each component including following parts by weight: 55 parts of silicon rubber, modified 33 parts of phase transformation powder, hydrogen-oxygen
Change 15 parts of aluminium, 8 parts of boron nitride；
The modified phase transformation raw powder's production technology is as follows: heating paraffin being melted, is then added in the paraffin of fusing
Hollow microsphere powder, additive amount weight ratio are the 28% of paraffin, and powder is kept the temperature in water-bath or oil bath after mixing, then with vibration
Sieve vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase transformation powder
Body.
Embodiment 19
Phase-change thermal storage rubber, each component including following parts by weight: 55 parts of silicon rubber, modified 33 parts of phase transformation powder, hydrogen-oxygen
Change 15 parts of aluminium, 8 parts of boron nitride；
The modified phase transformation raw powder's production technology is as follows: 20 carbon atom paraffins being heated and are melted, then in fusing
Nanometer titanium dioxide silicon powder is added in 20 carbon atom paraffins, additive amount weight ratio is the 36% of 20 carbon atom paraffins, mixing
Powder is kept the temperature in water-bath or oil bath afterwards, then uses shaker vibration 4h or more, then uses oil-Absorbing Sheets oil suction, then with ball mill or
Sand mill grinds powder, obtains the modification phase transformation powder.
Embodiment 20
Phase-change thermal storage rubber, each component including following parts by weight: 55 parts of silicon rubber, modified 33 parts of phase transformation powder, hydrogen-oxygen
Change 15 parts of aluminium, 8 parts of boron nitride；
The modified phase transformation raw powder's production technology is as follows: fatty acid being heated and is melted, then in the fatty acid of fusing
Expanded graphite is added, additive amount weight ratio is the 12% of fatty acid, and powder is kept the temperature in water-bath or oil bath after mixing, then with vibration
Dynamic sieve vibration 4h or more then uses oil-Absorbing Sheets oil suction, then grinds powder with ball mill or sand mill, obtains the modification phase transformation
Powder.
Embodiment 21
The preparation method of above-mentioned phase-change thermal storage silica gel, includes the following steps, weighs each component according to formula,
Step 1, mixing mixing: by silica gel and modified 0.5~3h of phase transformation powder mixing mixing；
Step 2 squeezes out or is pressed and molded acquisition phase-change thermal storage silica gel.
Embodiment 22
The application of phase-change thermal storage silica gel described in embodiment 1-20, the phase-change thermal storage silica gel can be used for battery and electricity
Hold.
The field of batteries that is applied to of phase-change thermal storage silica gel described in embodiment 1-12 has carried out performance test, and indices are surveyed
Test result is as shown in table 1, and test performance is following (0.1mm) under identical environment temperature:
Table 1
The field of batteries that is applied to of phase-change thermal storage silica gel described in embodiment 13-33 has carried out performance test, indices
Test result is as shown in table 2, and test performance is following (0.1mm) under identical environment temperature:
Table 2
The phase-change thermal storage silica gel of Application Example 1-10 is applied to battery core, is applied to battery core with silica gel without phase-change, 30A is put
Electric 1500mAH, discharge time about 90min carry out test comparison, as a result as indicated at 3:
Table 3
Above-mentioned battery core test result finds out that temperature when phase-change material can significantly reduce battery core work, cooling averagely can reach
13 DEG C or so；
By the data of table 1- table 3 it is found that the enthalpy of phase change (J/g) about 15~200 of phase-change thermal storage silica gel of the invention, endothermic value
It is high；Phase transition temperature (DEG C) 28~85；Specific heat capacity (J/ (gK)) >=2.0；Specific gravity (g/cc) has reached 0.9~1.6, and when modification
When the additive amount of phase transformation powder increases, specific heat capacity, enthalpy of phase change are also increased with it, and have higher enthalpy of phase change and bigger specific heat
Hold, heat absorption and thermal storage performance are also more excellent, can be illustrated with this, the collocation application of modified phase transformation powder, so that silica gel has
Surprising heat absorption enthalpy and specific heat capacity, and all other performance indicators also enhance therewith, have unexpected enhancing
Effect is found by test, and with the increase of modified phase transformation powder additional amount, specific heat capacity is also increased with it, but when modified phase
When the amount that change powder is added is excessive, silica gel difficult forming, and also mechanical performance also decreases, therefore, modified phase transformation powder
Parts by weight of the ratio preferably no more than silica gel.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. phase-change thermal storage silica gel, which is characterized in that each component including following parts by weight:
20~70 parts of silica gel and modified 10~68 parts of phase transformation powder.
2. phase-change thermal storage silica gel according to claim 1, it is characterised in that: the modified phase transformation raw powder's production technology is such as
Under: phase transformation powder is heated and is melted, modifying agent is then added in the phase transformation powder of fusing, additive amount weight ratio is phase transformation powder
2%~40%, powder is kept the temperature in water-bath or oil bath after mixing, then use shaker vibration, then use oil-Absorbing Sheets oil suction, then
Powder is ground with ball mill or sand mill, obtains the modification phase transformation powder.
3. phase-change thermal storage silica gel according to claim 2, it is characterised in that: the phase transformation powder is selected from paraffins, fat
Any one in acid, PE wax and polyethylene glycol or several combinations.
4. phase-change thermal storage silica gel according to claim 2, it is characterised in that: the modifying agent is selected from expanded graphite, nanometer
Any one in fine silica powder and hollow microsphere powder or several combinations.
5. phase-change thermal storage silica gel according to claim 1-4, it is characterised in that: it further include fire retardant 10~30
Part, any one or several combination of the fire retardant in phosphorus flame retardant, nitrogenated flame retardant and aluminium hydroxide.
6. phase-change thermal storage silica gel according to claim 5, which is characterized in that it further include 1~20 part of conduction powder, it is described to lead
Hot powder is selected from any one or several combinations of aluminium oxide, boron nitride and aluminium nitride.
7. phase-change thermal storage silica gel according to claim 5, which is characterized in that further include graphite, carbon nanotube and/or graphite
1~20 part of alkene.
8. phase-change thermal storage silica gel according to claim 3, it is characterised in that: the alkane carbon atom number of the paraffins between
Between 10-60.
9. the preparation method of phase-change thermal storage silica gel according to claim 1-4, which is characterized in that including following step
Suddenly, each component is weighed according to formula,
Step 1, mixing mixing: by silica gel and modified 0.5~3h of phase transformation powder mixing mixing；
Step 2 squeezes out or is pressed and molded acquisition phase-change thermal storage silica gel.
10. the application of phase-change thermal storage silica gel according to claim 1-8, which is characterized in that the phase transformation storage
Hot silica gel can be used for battery and capacitor.
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| PCT/CN2019/109614 WO2021000439A1 (en) | 2019-07-03 | 2019-09-30 | Phase-change heat storage silica gel, preparation method therefor, and application thereof |
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| CN112048909A (en) * | 2020-09-08 | 2020-12-08 | 惠州华盛家庭用品有限公司 | Constant-temperature cotton and preparation process thereof |
| WO2021000432A1 (en) * | 2019-07-03 | 2021-01-07 | 张立强 | Phase change heat storage rubber, preparation method and application thereof |
| CN113534534A (en) * | 2021-07-08 | 2021-10-22 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
| WO2023077430A1 (en) * | 2021-11-03 | 2023-05-11 | 青岛科技大学 | High thermal-conductivity phase-change organic silicon rubber, and preparation method therefor and use thereof |
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| WO2021000432A1 (en) * | 2019-07-03 | 2021-01-07 | 张立强 | Phase change heat storage rubber, preparation method and application thereof |
| CN111234730A (en) * | 2020-03-14 | 2020-06-05 | 广东力王新材料有限公司 | Phase-change powder secondary adsorption method based on metal oxide |
| CN112048909A (en) * | 2020-09-08 | 2020-12-08 | 惠州华盛家庭用品有限公司 | Constant-temperature cotton and preparation process thereof |
| CN113534534A (en) * | 2021-07-08 | 2021-10-22 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
| CN113534534B (en) * | 2021-07-08 | 2024-01-05 | 深圳亿成光电科技有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
| WO2023077430A1 (en) * | 2021-11-03 | 2023-05-11 | 青岛科技大学 | High thermal-conductivity phase-change organic silicon rubber, and preparation method therefor and use thereof |
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| WO2021000439A1 (en) | 2021-01-07 |
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