JP2021021066A5 - - Google Patents

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JP2021021066A5
JP2021021066A5 JP2020125685A JP2020125685A JP2021021066A5 JP 2021021066 A5 JP2021021066 A5 JP 2021021066A5 JP 2020125685 A JP2020125685 A JP 2020125685A JP 2020125685 A JP2020125685 A JP 2020125685A JP 2021021066 A5 JP2021021066 A5 JP 2021021066A5
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Japan
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microporous membrane
polyolefin
membrane according
based microporous
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JP2020125685A
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JP2021021066A (en
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本発明の実施形態における特性の測定方法、および効果の評価方法は次の通りである。
ただし、本発明の実施態様は、これらの実施例に限定されるものではない。
なお、実施例1~7、13、15~17、19は参考例1~7、13、15~17、19に読み替えるものとする。
Methods for measuring properties and evaluating effects in the embodiments of the present invention are as follows.
However, embodiments of the present invention are not limited to these examples.
Examples 1 to 7, 13, 15 to 17, and 19 shall be read as Reference Examples 1 to 7, 13, 15 to 17, and 19.

Claims (7)

微多孔膜のFIB-SEM測定で得られる各断面像から作成された2.7μm角の三次元画像において、フィブリル本数が870本/μm以上2800本/μm以下であり、厚みが3μm以上14μm以下であり、熱機械分析装置(TMA)によるTD方向の最大収縮応力温度が143℃以上、かつ最大収縮応力が1.3MPa以下である、ポリオレフィン系微多孔膜。 In a three-dimensional image of 2.7 μm square created from each cross-sectional image obtained by FIB-SEM measurement of the microporous membrane, the number of fibrils is 870/μm 3 or more and 2800/μm 3 or less, the thickness is 3 μm or more and 14 μm or less, and the maximum shrinkage stress temperature in the TD direction by a thermomechanical analyzer (TMA) is 143° C. or more and the maximum shrinkage stress is 1.3 MPa or less. . フィブリル平均径が25nm以上60nm以下である、請求項1に記載のポリオレフィン系微多孔膜。 2. The polyolefin-based microporous membrane according to claim 1, having an average fibril diameter of 25 nm or more and 60 nm or less. フィブリル交差数が1350個/μm以上4400個/μm以下である、請求項1または2に記載のポリオレフィン系微多孔膜。 3. The polyolefin-based microporous membrane according to claim 1 or 2, wherein the number of fibril crossings is 1350/μm 3 or more and 4400/μm 3 or less. 突刺し強度が180gf以上700gf以下である、請求項1から請求項3のいずれか一項に記載のポリオレフィン系微多孔膜 The polyolefin-based microporous membrane according to any one of claims 1 to 3, having a puncture strength of 180 gf or more and 700 gf or less . 空孔率が35%以上50%以下である、請求項1から請求項のいずれか一項に記載のポリオレフィン系微多孔膜 The polyolefin microporous membrane according to any one of claims 1 to 4 , having a porosity of 35% or more and 50% or less . 請求項1から請求項のいずれか一項に記載のポリオレフィン系微多孔膜に、さらに耐熱性樹脂層を積層した、積層体。 A laminate obtained by laminating a heat-resistant resin layer on the polyolefin-based microporous membrane according to any one of claims 1 to 5 . 請求項1から請求項のいずれか一項に記載のポリオレフィン系微多孔膜、または請求項6に記載の積層体を備える、非水電解液二次電池。 A non-aqueous electrolyte secondary battery comprising the polyolefin microporous membrane according to any one of claims 1 to 5 or the laminate according to claim 6.
JP2020125685A 2019-07-25 2020-07-22 Polyolefin microporous film, laminate, and non-aqueous electrolyte secondary battery using the same Pending JP2021021066A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019137307 2019-07-25
JP2019137307 2019-07-25

Publications (2)

Publication Number Publication Date
JP2021021066A JP2021021066A (en) 2021-02-18
JP2021021066A5 true JP2021021066A5 (en) 2023-07-21

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JP2020125685A Pending JP2021021066A (en) 2019-07-25 2020-07-22 Polyolefin microporous film, laminate, and non-aqueous electrolyte secondary battery using the same

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