CN115850975A - Heat conduction gel for filling battery and preparation process thereof - Google Patents
Heat conduction gel for filling battery and preparation process thereof Download PDFInfo
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Abstract
The invention relates to the technical field of heat conduction materials, in particular to the field of IPC 08L83, and further relates to a heat conduction gel for filling a battery and a preparation process thereof. The component A comprises the following raw materials: 30-80 parts of organic silicon A, 50-100 parts of heat-conducting filler and 10-30 parts of cross-linking agent by mass; the component B comprises the following raw materials: according to the mass parts, 30-80 parts of organic silicon B, 1-3 parts of catalyst and 10-30 parts of chain extender; the mass ratio of the component A to the component B is 1: (0.5-2). The mass ratio of the component A to the component B is 1: (0.5-2). The heat-conducting gel prepared by the invention has high heat-conducting property, self-viscosity, excellent weather resistance and excellent resilience.
Description
Technical Field
The invention relates to the technical field of heat conduction materials, in particular to the field of IPC 08L83, and further relates to a heat conduction gel for filling a battery and a preparation process thereof.
Background
At present, the electric automobile quickly becomes a hot spot of common attention of government departments, vehicle enterprises, consumers and researchers due to the advantages of zero pollution, zero emission, high energy utilization rate and the like in the use process. The thermal protection of the power battery is the same as the improvement of the battery capacity, and is a key and bottleneck problem which needs to be solved urgently in the rapid development process of the electric automobile. The over-high temperature of the power battery can reduce the capacity of the power battery, reduce the working efficiency and the working life, and also has the hidden troubles of combustion and explosion, so the temperature of the battery pack must be controlled within a safe range, and the temperature difference between the battery packs is reduced as much as possible to ensure the service life and the working efficiency of the battery.
At present, battery packs of new energy electric vehicles are all designed with heat dissipation systems, such as a circulating water cooling system, and a heat conduction silica gel sheet is usually selected between a battery core and the cooling system to form good contact with both sides to help to guide out heat; however, the heat conductivity coefficient and the heat resistance of the heat-conducting silica gel sheet are high, the preparation process is relatively complex, and the related application of the new energy electric automobile is difficult to meet.
Chinese patent CN 213816250U discloses a battery core heat dissipation module based on heat conduction gel, the heat conduction gel used is two-component low-density high-heat conduction gel, the main material is a mixture of silicon dioxide and heat conduction particles (aluminum nitride, aluminum oxide, boron nitride and the like), and the density of the mixture is lower than 2g/cm 3 The thermal conductivity coefficient is more than 2.0W/(K.m). The heat conducting gel adopted by the technical scheme has low heat conductivity coefficient, so that the heat conducting effect is not obvious. Chinese patent CN 111961255B discloses a heat-conducting gel and a preparation method thereof, wherein the heat-conducting gel comprises the following raw materials: 100 parts of organopolysiloxane containing at least two vinyl groups; 1090 parts of polyorganosiloxane having at least 2 silicon-bonded hydrogen atoms; 0.110 part of hydrosilylation catalyst; a hydrosilylation reaction inhibitor 0.10.5 parts; 5363 parts of metal hybrid heat-conducting filler 1001200; although the technical scheme can effectively improve the heat conductivity coefficient of the heat-conducting gel, the metal hybrid heat-conducting filler needs to be prepared by self, the steps for preparing the heat-conducting gel are slightly complicated, and the preparation method is used for preparing the heat-conducting gelThe weather resistance and the adhesive effect of the prepared thermally conductive gel are not mentioned.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a thermal conductive gel for filling a battery and a preparation process thereof, which can satisfy the requirement of a battery for high thermal conductivity, have excellent weather resistance and appropriate viscosity, and improve the applicability of the thermal conductive gel to the battery.
The invention provides a heat-conducting gel for filling a battery, wherein a component A comprises the following raw materials: 30-80 parts of organic silicon A, 50-100 parts of heat-conducting filler and 10-30 parts of cross-linking agent by mass; the component B comprises the following raw materials: according to the mass parts, 30-80 parts of organic silicon B, 1-3 parts of catalyst and 10-30 parts of chain extender;
the mass ratio of the component A to the component B is 1: (0.5-2).
In some preferred embodiments, the silicone a is a vinyl-terminated silicone oil having a viscosity of 50 to 500mpa.s and a vinyl content of 0.4 to 1.2wt%.
Preferably, the vinyl-terminated silicone oil is at least one of double-terminated vinyl polydimethylsiloxane and single-terminated vinyl polydimethylsiloxane.
Preferably, the vinyl-terminated silicone oil is double-terminated vinyl polydimethylsiloxane.
Preferably, the viscosity of the double-end-capped vinyl polydimethylsiloxane is 200mPa.s, and the vinyl content is 0.62-0.72 wt%.
In some preferred embodiments, the silicone B is a vinyl-terminated silicone oil having a viscosity of 500 to 20000mpa.s and a vinyl content of 0.1 to 0.5wt%.
Preferably, the vinyl-terminated silicone oil is at least one of double-terminated vinyl polydimethylsiloxane and single-terminated vinyl polydimethylsiloxane.
Preferably, the vinyl-terminated silicone oil is double-terminated vinyl polydimethylsiloxane.
Preferably, the viscosity of the double-end-capped vinyl polydimethylsiloxane is 1000mPa.s, and the vinyl content is 0.30-0.34 wt%.
The applicant has unexpectedly found that by selecting a vinyl-terminated silicone oil having a viscosity of 50 to 500mpa.s and a vinyl content of 0.4 to 1.2wt% for use in combination with a vinyl-terminated silicone oil having a viscosity of 500 to 20000mpa.s and a vinyl content of 0.1 to 0.5wt%, and particularly selecting a double-terminated vinyl polydimethylsiloxane having a viscosity of 200mpa.s and a vinyl content of 0.62 to 0.72wt% and a double-terminated vinyl polydimethylsiloxane having a viscosity of 1000mpa.s and a vinyl content of 0.30 to 0.34wt%, the thermal conductivity and adhesion of the thermally conductive gel can be effectively improved. The applicant conjectures that on one hand, the conductive filler has better dispersibility in the double-end vinyl polydimethylsiloxane with the viscosity of 200mPa.s and the vinyl content of 0.62-0.72 wt%; on the other hand, the double-end vinyl polydimethylsiloxane with the viscosity of 200mPa.s and the vinyl content of 0.62-0.72 wt% is matched with the double-end vinyl polydimethylsiloxane with the viscosity of 1000mPa.s and the vinyl content of 0.30-0.34 wt%, so that the cross-linking density is moderate, and the colloid has good toughness.
In some preferred embodiments, the thermally conductive filler includes an electrically conductive filler a and an electrically conductive filler B.
Preferably, the heat conducting filler A is selected from one or more of alumina, quartz powder, magnesium oxide, zinc oxide, aluminum nitride, boron nitride and silicon carbide.
Preferably, the thermally conductive filler B is selected from one or more combinations of graphene, graphite, carbon fiber and carbon nanotube.
Preferably, the heat-conducting filler A is aluminum oxide and nano magnesium oxide, and the mass ratio of the aluminum oxide to the nano magnesium oxide is (1-2): 1.
Preferably, the alumina is a combination of spherical alumina and rhombic alumina, and the mass ratio of the spherical alumina to the rhombic alumina is (1-2): 1.
Preferably, the spherical alumina has a particle size of 2 to 45 μm.
Preferably, the diamond-shaped alumina has a particle size of 3 to 20 μm.
Preferably, the particle size of the nano magnesium oxide is 30-80 nm.
The applicant unexpectedly finds that the heat-conducting property and the weather resistance of the heat-conducting gel can be effectively improved by selecting the spherical and rhombic aluminum oxide and nano magnesium oxide to act together. The applicant guesses that the spherical alumina with the grain diameter of 2-45 mu m, the rhombohedral alumina with the grain diameter of 3-20 mu m and the nano magnesia with the grain diameter of 30-80 nm can improve the stacking density among the fillers on one hand, thereby improving the heat conductivity coefficient; on the other hand, the rhombic aluminum oxide is added into the system, so that the heat conductivity coefficient is improved, the phenomena of slippage and cracking of the heat-conducting gel under high and low temperature impact are greatly improved, and the excellent weather resistance is endowed to the heat-conducting gel.
Preferably, the conductive filler B is a carbon nanotube.
Preferably, the mass ratio of the conductive filler A to the carbon nanotubes is 1 (1-2).
The applicant unexpectedly finds that when the conductive filler B is added into a system and the mass ratio of the conductive filler A to the carbon nano tubes is controlled to be 1 (1-2), the heat conduction performance of the system can be further improved, the heat conduction gel with higher heat conduction performance is obtained under the condition of reducing the carbon fiber filling amount, and the preparation cost of the high heat conduction gel is reduced.
In some preferred embodiments, the cross-linking agent is a pendant hydrogen-containing silicone oil; the viscosity of the side chain hydrogen-containing silicone oil is 50-200mPa.s, and the hydrogen content is 0.08-0.29 wt%.
Preferably, the viscosity of the side chain hydrogen-containing silicone oil is 60-80mPa.s, and the hydrogen content is 0.18 +/-0.01 wt%; the applicant unexpectedly finds that the side chain hydrogen-containing silicone oil with the viscosity of 50-200mPa.s and the hydrogen content of 0.08-0.29 wt%, especially the side chain hydrogen-containing silicone oil with the viscosity of 60-80mPa.s and the hydrogen content of 0.18 +/-0.01 wt%, is introduced into the system, and the side chain hydrogen-containing silicone oil reacts with the double-end vinyl polydimethylsiloxane in the system to have a proper crosslinking degree, so that the viscosity and the flexibility of the heat-conducting gel are effectively improved; when the hydrogen content is too low, the addition reaction activity is too low, the crosslinking reaction is insufficient, and the strength of the heat-conducting gel is very poor; however, when the hydrogen content is high to a certain extent, the crosslinking points are too dense, resulting in poor toughness of the thermal conductive gel, which is characterized by hardness and brittleness, and low strength of the thermal conductive gel.
In some preferred embodiments, the catalyst is a hydrosilylation catalyst (PC) series, model number PC-52, manufactured by Shanghai Miyaxing chemical Tech, inc.
In some preferred embodiments, the chain extender is selected from at least one of hydrogen-terminated silicone oil, amino silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, and alcoholic hydroxyl-modified silicone oil.
Preferably, the chain extender is a hydrogen terminated silicone oil.
Preferably, the hydrogen-terminated silicone oil is selected from at least one of single-ended hydrogen-containing silicone oil and double-ended hydrogen-containing silicone oil.
Preferably, the hydrogen-terminated silicone oil is double-ended hydrogen-containing silicone oil.
Preferably, the viscosity of the hydrogen-containing silicone oil with double ends is 15-200mPa.s, and the hydrogen content is 0.02-0.15 wt%.
In some preferred embodiments, the mass ratio of the silicone a, the silicone B, and the double-ended hydrogen-containing silicone oil is (3 to 5): (3-5): 1. the applicant unexpectedly found that a hydrogen-containing silicone oil at both ends with a viscosity of 15 to 200mpa.s and a hydrogen content of 0.02 to 0.15wt% is selected in the system, and the mass ratio of silicone a, silicone B and hydrogen-containing silicone oil at both ends is controlled to be (3 to 5): (3-5): 1, the hardness of the heat-conducting gel can be improved, and the softness and resilience performance of the heat-conducting gel can be improved. The applicant guesses that because the reactivity of the double-end hydrogen-containing silicone oil is higher than that of the cross-linking agent with active hydrogen positioned on the side chain, in the curing process, the organosilicon A and the organosilicon B preferentially carry out chain extension reaction with the chain extender and then carry out cross-linking reaction with the side chain hydrogen-containing silicone oil, and the cross-linking density formed by the vinyl-terminated silicone oil and the double-end hydrogen-containing silicone oil is moderate under the mass ratio, so that the softness and resilience of the heat-conducting gel are improved.
The invention also provides a preparation process of the heat-conducting gel for filling the battery, which comprises the following steps:
(1) Uniformly mixing the organic silicon A, the heat-conducting filler and the cross-linking agent according to the mass parts to obtain a component A;
(2) Uniformly mixing the organic silicon B, the catalyst and the chain extender in parts by mass to obtain a component B;
(3) And uniformly mixing the component A and the component B according to the mass ratio to obtain the heat-conducting gel for filling the battery.
Has the advantages that:
1. the invention selects the vinyl terminated silicone oil with the viscosity of 50-500mPa.s and the vinyl content of 0.4-1.2 wt% to be matched with the vinyl terminated silicone oil with the viscosity of 500-20000mPa mPa.s and the vinyl content of 0.1-0.5 wt% for use, so that the conductive filler has good dispersibility, moderate crosslinking density and good colloid toughness; the thermal conductivity and the adhesive force of the heat-conducting gel can be effectively improved.
2. According to the invention, spherical and rhombic aluminum oxide and nano-magnesium oxide are selected to act together, so that the packing density of the filler is improved, and the heat conductivity coefficient of the filler is improved; the heat conductivity coefficient is improved, the phenomena of slippage and cracking of the heat-conducting gel under high and low temperature impact are greatly improved, and the heat-conducting gel is endowed with excellent weather resistance.
3. According to the invention, the carbon nano tube is added into the system, and the mass ratio of the heat-conducting filler A to the carbon nano tube is controlled to be 1 (1-2), so that the heat-conducting gel with higher heat-conducting property is obtained under the condition of reducing the filling amount of the carbon fiber, and the preparation cost of the high heat-conducting gel is reduced.
4. In the system, the side chain hydrogen-containing silicone oil with the viscosity of 50-200mPa.s and the hydrogen content of 0.08-0.29 wt% reacts with the double-end vinyl polydimethylsiloxane in the system to form proper crosslinking degree, so that the viscosity and the flexibility of the heat-conducting gel are effectively improved.
5. In the system, double-end hydrogen-containing silicone oil with the viscosity of 15-200mPa.s and the hydrogen content of 0.02-0.15 wt% is selected, and the mass ratio of the organosilicon A to the organosilicon B to the double-end hydrogen-containing silicone oil is controlled to be (3-5): (3-5): 1, the hardness of the heat-conducting gel can be improved, and the softness and resilience performance of the heat-conducting gel can be improved.
Detailed Description
Example 1
Embodiment 1 provides a heat conductive gel for battery filling, wherein the component a comprises the following raw materials in parts by mass: 60 parts of organic silicon A, 80 parts of heat-conducting filler and 20 parts of cross-linking agent in parts by mass; the component B comprises the following raw materials: 60 parts of organic silicon B, 2 parts of catalyst and 20 parts of chain extender in parts by mass;
the mass ratio of the component A to the component B is 1: (0.5-2).
The mass ratio of the component A to the component B is 1:1.
the organic silicon A is double-end vinyl polydimethylsiloxane, the viscosity is 200mPa.s, the vinyl content is 0.62-0.72 wt%, and the organic silicon A is purchased from Shenzhen Lida creative technology Co., ltd, and has the model of MSK RF-200A.
The organic silicon B is double-end vinyl polydimethylsiloxane, the viscosity is 1000mPa.s, the vinyl content is 0.30-0.34 wt%, and the organosilicon B is purchased from Shenzhen Lida creative technology Co., ltd, and has the model of MSK RF-1000A.
The heat-conducting filler comprises a heat-conducting filler A and a heat-conducting filler B; the heat-conducting filler A is alumina and nano-magnesia, and the mass ratio is 1.3:1; the alumina is a combination of spherical alumina and rhombic alumina, and the mass ratio of the spherical alumina to the rhombic alumina is 1.5:1.
the spherical alumina has an average particle size of 5 μm, and is purchased from bovas nanotechnology (ningbo) limited, model number: brofos-Al 2 O 3 -Q05。
The diamond-shaped alumina has an average particle size of 4.7 +/-0.5 mu m, and is purchased from tin-free mesomorphic materials science and technology Limited company, model number: TWA5.
The particle size of the nano magnesium oxide is 40nm, and the nano magnesium oxide is purchased from Shanghai Moghai Nscience and technology Co., ltd, and has the following model: MG-MgO-40.
The heat-conducting filler B is a carbon nano tube, is purchased from Jiangsu Xiancheng nano material science and technology Limited company, and has the model number: 100225.
the cross-linking agent is side chain hydrogen-containing silicone oil; the viscosity of the side chain hydrogen-containing silicone oil is 60-80mPa.s, the hydrogen content is 0.18 +/-0.01 wt%, and the side chain hydrogen-containing silicone oil is purchased from Ningbo Runghe high-new material science and technology company with the model number: RH-H33.
The catalyst is a hydrosilylation catalyst (PC) series produced by Shanghai Zhongzixing chemical technology Co., ltd, and the model is PC-52.
The chain extender is hydrogen-containing silicone oil with double ends; the viscosity of the double-end hydrogen-containing silicone oil is 60mPa.s, the hydrogen content is 0.05wt%, and the double-end hydrogen-containing silicone oil is purchased from Jinnuoder supply chain Limited company in Shenzhen city, model number DL-H-50.
A preparation process of a heat conducting gel for filling a battery comprises the following steps:
(1) Uniformly mixing double-end vinyl polydimethylsiloxane with the viscosity of 200mPa.s and the vinyl content of 0.62-0.72 wt%, nano magnesium oxide, spherical alumina, rhombic alumina, a carbon nano tube and side chain hydrogen-containing silicone oil in parts by mass to obtain a component A;
(2) Uniformly mixing double-end vinyl polydimethylsiloxane with viscosity of 1000mPa.s and vinyl content of 0.30-0.34 wt%, a hydrosilylation catalyst and double-end hydrogen-containing silicone oil in parts by mass to obtain a component B;
(3) And uniformly mixing the component A and the component B according to the mass ratio to obtain the heat-conducting gel for filling the battery.
Example 2
Example 2 provides a heat conductive gel for battery filling, the component a comprising the following raw materials: according to the mass parts, 70 parts of organic silicon A, 70 parts of heat-conducting filler and 25 parts of cross-linking agent; the component B comprises the following raw materials: according to the mass parts, 70 parts of organic silicon B, 2 parts of catalyst and 30 parts of chain extender;
the mass ratio of the component A to the component B is 1:1.
the organic silicon A is double-end vinyl polydimethylsiloxane, the viscosity is 200mPa.s, the vinyl content is 0.62-0.72 wt%, and the organic silicon A is purchased from Shenzhen Lida creative technology Co., ltd, and has the model of MSK RF-200A.
The organic silicon A is double-end vinyl polydimethylsiloxane, the viscosity is 1000mPa.s, the vinyl content is 0.30-0.34 wt%, and the organosilicon is purchased from Shenzhen Lida creative technology Co., ltd, and the model is MSK RF-1000A.
The heat conducting filler comprises an electric conducting filler A and an electric conducting filler B; the heat-conducting filler A is alumina and nano-magnesia, and the mass ratio is 1.3:1; the alumina is a combination of spherical alumina and rhombic alumina, and the mass ratio of the spherical alumina to the rhombic alumina is 1.5:1.
the spherical alumina has an average particle size of 5 μm, and is available from bovas nanotechnology (Ningbo) Inc., type: brofos-Al 2 O 3 -Q05。
The diamond-shaped alumina has an average particle size of 4.7 +/-0.5 mu m, and is purchased from tin-free mesomorphic materials science and technology Limited company, model number: TWA5.
The particle size of the nano magnesium oxide is 40nm, and the nano magnesium oxide is purchased from Shanghai Moghai Nscience and technology Co., ltd, and has the following model: MG-MgO-40.
The heat-conducting filler B is a carbon nano tube, which is purchased from Jiangsu Xiancheng nano material science and technology company Limited and has the model number: 100225.
the cross-linking agent is side chain hydrogen-containing silicone oil; the viscosity of the side chain hydrogen-containing silicone oil is 60-80mPa.s, the hydrogen content is 0.18 +/-0.01 wt%, and the side chain hydrogen-containing silicone oil is purchased from Ningbo Runghe high-new material science and technology company with the model number: RH-H33.
The catalyst is a hydrosilylation catalyst (PC) series produced by Shanghai Zhongzixing chemical technology Co., ltd, and the model is PC-52.
The chain extender is hydrogen-containing silicone oil with double ends; the viscosity of the double-end hydrogen-containing silicone oil is 60mPa.s, the hydrogen content is 0.05wt%, and the double-end hydrogen-containing silicone oil is purchased from Jinnuoder supply chain Limited company in Shenzhen city, model number DL-H-50.
A preparation process of a heat conducting gel for filling a battery comprises the following steps:
(1) Uniformly mixing double-end vinyl polydimethylsiloxane with the viscosity of 200mPa.s and the vinyl content of 0.62-0.72 wt%, nano magnesium oxide, spherical alumina, rhombic alumina, a carbon nano tube and side chain hydrogen-containing silicone oil in parts by mass to obtain a component A;
(2) Uniformly mixing double-end vinyl polydimethylsiloxane with viscosity of 1000mPa.s and vinyl content of 0.30-0.34 wt%, a hydrosilylation catalyst and double-end hydrogen-containing silicone oil in parts by mass to obtain a component B;
(3) And uniformly mixing the component A and the component B according to the mass ratio to obtain the heat-conducting gel for filling the battery.
Example 3
Example 3 provides a thermally conductive gel for battery filling, which is the same as example 1, except that the silicone a is double-terminated vinyl polydimethylsiloxane having a viscosity of 1000mpa.s and a vinyl content of 0.30 to 0.34wt%, and is purchased from shenzhen, dynasty ltd, model number MSK RF-1000A.
Example 4
Example 4 provides a thermally conductive gel for battery filling, which is similar to example 1, except that the alumina is spherical alumina.
Example 5
Example 5 provides a thermally conductive gel for battery filling, which is the same as example 1 except that 30 parts by mass of the chain extender is used.
Example 6
Example 6 provides a heat-conductive gel for battery filling, which is the same as example 1 except that the side-chain hydrogen-containing silicone oil has a viscosity of 10 to 20mpa.s and a hydrogen content of 0.35 ± 0.02wt%, and is purchased from ningbo rynghe gaoxin scientific & ltd., model number: RH-H536.
Performance test
1. Coefficient of thermal conductivity: the results are reported in Table 1 with reference to ASTM D5470.
2. Surface tackiness: the results are reported in Table 1, with reference to the GB// T31125 standard.
3. Weather resistance: the thermal conductive gel was tested for 1000 hours at-40 ℃ to 60 ℃ using a temperature cycle apparatus to evaluate the weatherability (cracking, slipping) of the thermal conductive gel, and the results are reported in table 1.
4. Tensile strength and elongation at break: the results are reported in Table 1 with reference to the GB/T528-2009 standard.
5. 100% deformation rebound: the compression mechanical properties were measured using a TMS-PRO texture analyzer and the results are reported in Table 1.
Test results
Table 1:
Claims (10)
1. the heat-conducting gel for filling the battery is characterized in that the component A comprises the following raw materials: 30-80 parts of organic silicon A, 50-100 parts of heat-conducting filler and 10-30 parts of cross-linking agent by mass; the component B comprises the following raw materials: according to the mass parts, 30-80 parts of organic silicon B, 1-3 parts of catalyst and 10-30 parts of chain extender;
the mass ratio of the component A to the component B is 1: (0.5-2).
2. The heat conductive gel for battery filling according to claim 1, wherein the silicone a is a vinyl-terminated silicone oil having a viscosity of 50 to 500mpa.s and a vinyl content of 0.4 to 1.2wt%.
3. The heat conductive gel for battery filling according to claim 1, wherein the silicone B is a vinyl-terminated silicone oil having a viscosity of 1000 to 20000mPa.s and a vinyl content of 0.1 to 0.5wt%.
4. The heat conductive gel for battery filling according to claim 1, wherein the heat conductive filler comprises an electrically conductive filler a and an electrically conductive filler B;
the heat-conducting filler A is selected from one or more of aluminum oxide, quartz powder, magnesium oxide, zinc oxide, aluminum nitride, boron nitride and silicon carbide;
the heat conducting filler B is selected from one or more of graphene, graphite, carbon fiber and carbon nano tube.
5. The heat conductive gel for battery filling according to claim 4, wherein the alumina is a combination of spherical alumina and rhombohedral alumina in a mass ratio of (1-2): 1.
6. The heat conductive gel for battery filling according to claim 5, wherein the spherical alumina has a particle diameter of 2 to 45 μm; the grain size of the rhombic alumina is 3-20 mu m.
7. The heat conductive gel for battery filling according to claim 1, wherein the crosslinking agent is a side chain hydrogen-containing silicone oil; the viscosity of the side chain hydrogen-containing silicone oil is 50-200mPa.s, and the hydrogen content is 0.08-0.29 wt%.
8. The heat conductive gel for battery filling according to claim 1, wherein the chain extender is at least one selected from the group consisting of hydrogen-terminated silicone oil, amino silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, and alcoholic hydroxyl-modified silicone oil.
9. The heat conductive gel for battery filling according to claim 1, wherein the viscosity of the hydrogen-terminated silicone oil is 15 to 200mpa.s, and the hydrogen content is 0.02 to 0.15wt%.
10. A process for preparing a heat conductive gel for battery filling according to any one of claims 1 to 9, comprising the steps of:
(1) Uniformly mixing the organic silicon A, the heat-conducting filler and the cross-linking agent according to the mass parts to obtain a component A;
(2) Uniformly mixing the organic silicon B, the catalyst and the chain extender in parts by mass to obtain a component B;
(3) And uniformly mixing the component A and the component B according to the mass ratio to obtain the heat-conducting gel for filling the battery.
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| CN113563851A (en) * | 2021-07-20 | 2021-10-29 | 深圳先进电子材料国际创新研究院 | In-situ modified low-viscosity high-performance heat-conducting gel and preparation method and application thereof |
| CN114031944A (en) * | 2021-12-01 | 2022-02-11 | 深圳先进电子材料国际创新研究院 | Low-hysteresis heat-conducting gel and preparation method thereof |
| CN114316603A (en) * | 2021-12-31 | 2022-04-12 | 江苏中迪新材料技术有限公司 | Orientable low-dielectric heat-conducting wave-absorbing gel and preparation method and application thereof |
| CN114716934A (en) * | 2022-02-21 | 2022-07-08 | 常州威斯双联科技有限公司 | Heat-conducting shielding composite material and preparation method thereof |
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