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Thermoplastic elastomer composition for battery pack protective member

A technology for thermoplastic elastomers and protective components, which is applied to battery pack components, large-size batteries/battery packs, small-size batteries/battery packs, etc., to achieve excellent flexibility and excellent thermal conductivity

Inactive Publication Date: 2017-12-01
RIKEN TECHNOS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not a thermally conductive elastomer composition that satisfies the strict requirements of the protective parts of battery packs, especially lithium-ion secondary batteries.

Method used

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  • Thermoplastic elastomer composition for battery pack protective member
  • Thermoplastic elastomer composition for battery pack protective member
  • Thermoplastic elastomer composition for battery pack protective member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～32、 comparative example 1～12

[0104]Using a 20-L capacity pressurized kneader, melt-kneading was carried out at a discharge temperature of 175° C. for the compounds having the compounding ratios shown in any one of Tables 1 to 7. Under the condition that the set temperature of the mold is 210° C., the obtained composition is thermally cut to obtain pellets. Next, using the obtained pellets, using a heating and pressing machine, hot pressing was carried out at a temperature of 220° C., a preheating time of 3 minutes, and a pressurization time of 3 minutes. Under cold pressing, a 1mm thick tablet is obtained. And obtain 2mm, 3mm, 6mm thick compressed tablets respectively according to the same method. The manufacturability of the above process was evaluated according to the following criteria. Furthermore, the following tests (3) to (8) were performed. The results are shown in any one of Tables 1-7.

[0105] (1) Manufacturability

[0106] ◯: There is no particular problem, and each tablet having a good t...

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Abstract

The purpose of the present invention is to provide a thermoplastic elastomer composition that shows outstanding flexibility over a wide temperature range from normal temperatures to low temperatures, has rank V-0 flame retardancy in a UL94 vertical flame test without the use of halogen-based flame retardants, has outstanding thermal conductivity, electrical insulation performance, and electrolysis resistance, and can be suitably used as a protective member for a soft battery pack. The present invention provides a thermoplastic elastomer composition for a battery pack protective member, the composition containing: 100 parts by mass of a resin composition that comprises (a) 20-80% by mass of a hydrogen additive that is a copolymer of an aromatic vinyl compound and a conjugated diene compound and (b) 80-20% by mass of a non-aromatic rubber softener, with the total of (a) and (b) being 100% by mass; (c) 0.1-10 parts by mass of a modified resin; and (d) 250-400 parts by mass of magnesium hydroxide.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer composition. In more detail, it relates to a product that exhibits excellent flexibility in a wide temperature range from normal temperature to low temperature, and is excellent in flame retardancy, thermal conductivity, electrical insulation, and electrolyte resistance, and can be suitably used as a protective part of a battery pack. thermoplastic elastomer composition. Background technique [0002] Conventionally, vulcanized rubber has been used as a member that is soft and requires rubber elasticity. However, from the viewpoint of environmental issues such as inability to recycle materials, the whole trend is toward replacement with thermoplastic elastomers. Conventionally known thermoplastic elastomer compositions using hydrogenated products of styrene-based thermoplastic elastomers such as styrene-butadiene block copolymer (SBS) and styrene-isoprene block copolymer (SIS) (for example, P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02C08K3/22C08K3/26C08K3/34C08K3/38C08L9/06C08L15/00C08L53/02H01M50/121H01M50/133H01M50/134H01M50/136H01M50/143
CPCC08L53/025C08L2201/02C08L2205/025C08L2205/03C08L2205/035C08K2003/2224C08K3/013Y02E60/10H01M50/133H01M50/121H01M50/136H01M50/143H01M50/134C08K2003/2217C08L51/06C08K2003/267C08L23/10C08L23/0807C08K3/22C08K3/26C08K3/34C08K3/38C08L9/06C08L15/00C08K2003/385C08K2201/001H01M50/116C08K5/01C08L53/02
Inventor 坂元克司
Owner RIKEN TECHNOS CORP
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