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High water vapor barrier type epoxy resin composition and application of same in lithium-ion power batteries

An epoxy resin and water vapor barrier technology, applied in epoxy resin glue, secondary battery, battery pack parts and other directions, can solve the problems of expensive curing agent, insufficient water vapor barrier property, and no mention of water vapor barrier property, etc. To achieve the effect of increasing the path and improving the water vapor barrier

Inactive Publication Date: 2019-07-26
FUJIAN CHANGDE PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this technology can significantly improve the barrier properties of the adhesive to oxygen, this technology does not mention the barrier properties to water vapor. In addition, because it involves the synthesis of curing agents, the curing agent is expensive, which is not conducive to large-scale promotion.
[0005] In view of the problem of insufficient water vapor barrier in the current epoxy resin structural bonding, it is of great application value and practical significance to develop an epoxy resin composition with high barrier property

Method used

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  • High water vapor barrier type epoxy resin composition and application of same in lithium-ion power batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 50g bisphenol A type epoxy resin, 16g epoxy-terminated nitrile rubber, 0.4g trifluorooctyl methacrylate, 3g organic montmorillonite, 0.1g 1000 mesh polyacrylamide powder, 30g fatty amine curing agent and 0.5 g of 2,4,6-tris(dimethylaminomethyl)phenol were uniformly mixed at a temperature of 25° C. to obtain a high water vapor barrier epoxy resin composition.

Embodiment 2

[0028] 10g bisphenol A type epoxy resin, 10g bisphenol F type epoxy resin, 5g polysulfide rubber, 58.5g silicon micropowder, 10g 2-ethylhexyl glycidyl ether, 0.1g heptadecanofluorodecyltriethoxy Silane, 5g of boron nitride nanosheets, 0.05g of 20000 mesh polyacrylamide powder, 3g of polyamide curing agent and 0.35g of K-54 are mixed uniformly at a temperature of 25°C to obtain a high water vapor barrier epoxy resin composition .

Embodiment 3

[0030] 40g novolac epoxy resin, 20g bisphenol S type epoxy resin, 8.9g glycidyl ester epoxy resin, 5g core-shell polymer, 5g nitrile rubber, 2.5g heptadecanofluorodecyltriethoxysilane, Mix 2.5g trifluorooctyl methacrylate, 0.1g layered double hydroxide, 1g 20000 mesh polyacrylamide powder, 10g alicyclic amine curing agent and 5g polythiol curing agent at a temperature of 100°C , to obtain a high water vapor barrier epoxy resin composition.

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PUM

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Abstract

The invention discloses a high water vapor barrier type epoxy resin composition. The high water vapor barrier type epoxy resin composition comprises, by weight, 20-60 parts of epoxy resin, 5-30 partsof a toughener, 0-60 parts of a packing, 0-15 parts of a diluting agent, 0.1-5 parts of a water vapor barrier, 0.1-5 parts of a layered nanomaterial, 0.05-1 part of polyacrylamide powder, 3-40 parts of an amine curing agent and 0-5 parts of a curing promoting agent. The composition not only has high toughness, high bonding strength and fatigue resistance, but also has high water vapor barrier, newrequirements of lightweight bonding and sealing of lithium-ion power batteries can be met, and important application value and practical significance are achieved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high water vapor barrier epoxy resin composition and its application in lithium-ion power batteries. Background technique [0002] Lithium-ion power battery is a key component of new energy vehicles, and its performance will have a significant impact on the application prospects of electric vehicles. Since the specific energy of power batteries is generally low at this stage, in order to prolong the use time of power batteries and reduce the number of charging, it is necessary to reduce the weight of vehicles, and the "weight loss" of power batteries will become the key to the lightweight of electric vehicles. [0003] The lightweight technology of lithium-ion power batteries is a complex system engineering, which requires lightweight design from all components of the battery pack, including the lightweight design of the aluminum alloy battery case. Since the lithium-ion batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04C09J11/08H01M2/08H01M10/0525H01M50/195
CPCC09J163/00C09J11/04C09J11/08H01M10/0525C08K2201/011C08K2003/385C08L2203/20H01M50/183C08L33/26C08K3/346C08K3/38C08K3/22C08K3/042Y02E60/10
Inventor 卓东贤项英凡吴立新吴培煌
Owner FUJIAN CHANGDE PLASTIC IND
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