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Explosion-proof gasket material for lithium battery and preparation method thereof

A lithium battery and gasket technology, applied in the field of lithium battery explosion-proof gasket material and its preparation, can solve the problem of poor mechanical properties such as tensile strength and tear strength, performance stability needs to be further improved, oil resistance, solvent resistance performance It can achieve the effect of excellent hydrophobicity, low preparation cost and good comprehensive performance

Active Publication Date: 2020-08-07
深圳市增长点科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its mechanical properties such as tensile strength and tear resistance are poor, and its physical and mechanical properties are not as good as most synthetic rubbers at room temperature, and general silicone rubber has poor oil and solvent resistance, and its long-term performance stability needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An explosion-proof gasket material for lithium batteries, characterized in that it comprises the following parts by weight of raw materials: 10 parts of fluorinated phosphazene rubber, 5 parts of polydiphenyl silicoboroxane, and 80 parts of vinyl-terminated fluorosilicone rubber , 1 part of azobisisobutyronitrile, 0.5 part of phosphorus pentoxide, 10 parts of vinyl modified thermal conductive filler, silane coupling agent KH5502 parts, 2-(2-[(3-ethyl-5-methyl- 3 parts of 2(3H)-benzothiazolinylidene)methyl]-1-butenyl)-1-(3-sulfonic acid)naphtho[1,2-d]oxazolhydroxide inner salt -1 part of adamantanediol monoacrylate and 1 part of 1-allyl-2-(trifluoromethyl)-1H-benzo[D]imidazole.

[0032] The preparation method of the vinyl-modified thermally conductive filler includes the following steps: adding the thermally conductive filler and vinyl triethoxy silane to ethanol, stirring and reacting at 30°C for 4 hours, and then rotating and evaporating the solvent to obtain vinyl Modif...

Embodiment 2

[0036] An explosion-proof gasket material for lithium batteries, which is characterized in that it comprises the following parts by weight of raw materials: 11 parts of fluorinated phosphazene rubber, 6 parts of polydiphenyl silicoboroxane, and 85 parts of vinyl-terminated fluorosilicone rubber , 1.5 parts of azobisisoheptonitrile, 0.7 parts of phosphorus pentoxide, 12 parts of vinyl modified thermal conductive filler, 2.5 parts of silane coupling agent KH5602.5 parts, 2-(2-[(3-ethyl-5-methyl -2-(3H)-benzothiazolidine)methyl]-1-butenyl)-1-(3-sulfonic acid)naphtho[1,2-d]oxazolidinium inner salt 4 parts , 1.5 parts of 3-adamantanediol monoacrylate, 1.5 parts of 1-allyl-2-(trifluoromethyl)-1H-benzo[D]imidazole.

[0037] The preparation method of the vinyl-modified thermally conductive filler includes the following steps: adding the thermally conductive filler and bis(triethoxysilyl)ethylene to methanol, stirring and reacting at 35°C for 5 hours, and then rotating and evaporating the...

Embodiment 3

[0041] An explosion-proof gasket material for lithium batteries, characterized in that it comprises the following parts by weight of raw materials: 13 parts of fluorinated phosphazene rubber, 8 parts of polydiphenyl silicoboroxane, and 90 parts of vinyl-terminated fluorosilicone rubber , 2 parts of azobisisobutyronitrile, 1 part of phosphorus pentoxide, 15 parts of vinyl modified thermally conductive filler, 3.5 parts of silane coupling agent KH5703.5 parts, 2-(2-[(3-ethyl-5-methyl 2-(3H)-benzothiazolidine)methyl]-1-butenyl)-1-(3-sulfonic acid)naphtho[1,2-d]oxazolidinium inner salt 4.5 parts, 1 , 2 parts of 3-adamantanediol monoacrylate, 2 parts of 1-allyl-2-(trifluoromethyl)-1H-benzo[D]imidazole.

[0042] The preparation method of the vinyl-modified thermally conductive filler includes the following steps: adding the thermally conductive filler and vinyl trimethoxysilane to ethylene glycol, stirring and reacting at 40°C for 5.5 hours, and then rotating and evaporating the solven...

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Abstract

The invention discloses an explosion-proof gasket material for a lithium battery. The explosion-proof gasket material for the lithium battery is characterized in that the gasket material is prepared from the following raw materials in parts by weight, 10-15 parts of fluorinated phosphazene rubber, 5-10 parts of polydiphenyl borosilazane, 80-100 parts of vinyl-terminated fluorinated silicone rubber, 1-3 parts of initiator, 0.5-1.5 parts of phosphorus pentoxide, 10-20 parts of vinyl modified heat-conducting filler, 2-5 parts of coupling agent, 3-6 parts of 2-(2-[(3-ethyl-5-methyl-2(3H)-benzothiazolyl)methyl]-1-butenyl)-1-(3-sulfoacid)naphtho-[1, 2-d]azole oxyhydrogen inner salt, 1-3 parts of 1, 3-adamantanediol monoacrylate and 1-3 parts of 1-allyl-2-(trifluoromethyl)-1H-benzo[D]imidazole. The invention also discloses a preparation method of the explosion-proof gasket material for a lithium battery. The explosion-proof gasket material for a lithium battery disclosed by the invention is good in comprehensive performance and heat-conducting property, good in flame-retardant insulation effect, excellent in tensile strength, tearing strength and other mechanical properties, high in performance stability and long in service life.

Description

Technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery explosion-proof gasket material and a preparation method thereof. Background technique [0002] With the rapid development of economy, mankind is facing severe challenges from energy crisis and environmental pollution. Countries in the world are constantly seeking cleaner and environmentally friendly green energy. Among them, lithium batteries are widely used in mobile phones, portable computers, cameras, etc. due to their high energy density, high voltage, long cycle life, low self-discharge rate, no memory effect, stable discharge voltage, fast charge and discharge, and environmental protection. The field of electronic products such as cameras, and the application field is still expanding, has become the main choice for sustainable power batteries, and is known as the ideal power source in the 21st century. [0003] With the gradual development of new ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08L85/02C08L85/04C08K9/06C08K3/04C08K3/34C08K3/38C08K5/3447C08K11/00C08K13/08
CPCC08L83/08C08L2201/02C08L2201/08C08L2203/20C08L2205/03C08L85/02C08L85/04C08K9/06C08K3/04C08K3/34C08K3/38C08K5/3447C08K11/005C08K13/08
Inventor 陶健君
Owner 深圳市增长点科技有限公司
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