JP7493347B2 - 熱膨張性、且つ熱硬化性の接着シート - Google Patents
熱膨張性、且つ熱硬化性の接着シート Download PDFInfo
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- JP7493347B2 JP7493347B2 JP2020021585A JP2020021585A JP7493347B2 JP 7493347 B2 JP7493347 B2 JP 7493347B2 JP 2020021585 A JP2020021585 A JP 2020021585A JP 2020021585 A JP2020021585 A JP 2020021585A JP 7493347 B2 JP7493347 B2 JP 7493347B2
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Landscapes
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- Laminated Bodies (AREA)
Description
エポキシ樹脂としてNPPN442(NANYA社製)を65℃のオーブンで事前に加熱して軟化させた。225mlのガラス容器に、当該樹脂48.5グラム、エポキシ樹脂として0.49グラムのYSLV-80XY(新日鉄住金化学社製)、溶媒として35グラムのメチルエチルケトン(MEK)(和光純薬工業社製)を加え、全ての樹脂をMEKに溶解させた。強靭化剤(コアシェルタフナー)として3.5グラムのBTA-731(ダウ・ケミカル社製)、硬化剤として8.07グラムのDICYANEX1400F(エボニック ジャパン社製)、レオロジー剤として4.2グラムのナノシリカUltrabond(キャボット ジャパン社製)、熱可塑性樹脂として14グラムのYP-50EK35(新日鉄住金化学社製)、シランカップリング剤として0.28グラムのOFS-6040(東レ・ダウコーニング社製)、第1の粒子として6グラムのFN-100SSD(松本油脂製薬社製)、及び硬化促進剤として0.65グラムの2MZA-PW(四国化成工業社製)をガラス容器に加え、約一時間、ホモジナイザーを用いて分散させて、接着材溶液Aを得た。
図3の表に示す条件を変更した点以外は、実施例1と同様である。
接着材部の中に第2の粒子を含まないものを比較例1とした。また、比較例1は、接着材透過層としての紙も有さなかった。第2の粒子が3.5μmのJ5Pとしたものを比較例2とした。なお、比較例3として、両面に紙を有し、接着材部の中に第2の粒子を有しないものを準備した。
実施例と比較例で作製したシートについて、以下の手順でブロッキングテストを行った。
・サンプルサイズ 25mm×25mm
・同一組成のサンプルを2枚重ね、更に2枚のサンプルをSUS304板(100mm×50mm、厚さ1mm、重さ40g)で挟み、上に500gの重りを載せた
・40℃に設定されたオーブン内にサンプルを4.5日間放置した
・サンプルをオーブンから取り出し、重りを外し、室温で1時間以上放置した
・SUS304板を取り除き、2枚重ねのサンプルを注意深く引き剥がし、貼り付き状態を観察した
・貼り付き状態を観察し、下記の基準にしたがって評価した
評価1 サンプルの面同士の貼り付き
評価2 サンプルの面に軽度な貼りつき
評価3 サンプルの端面部分に軽度な貼り付き
評価4 サンプルの端面部分に微小な貼り付き
評価5 貼り付き全く無し
実施例と比較例で作製したシートについて、以下の手順でせん断接着力テストを行った。
・サンプルサイズ 12.5mm×25mm
・MEKで表面清浄した2枚のSPCCサブストレートを準備し、1枚のSPCCサブストレートの上にタックフリー状態のサンプル、及び厚さ0.3mmのスペーサを置き、さらにもう1枚のSPCCサブストレートをサンプル及びスペーサの上に置いた
・クランプを利用して2枚のサブストレートの間隔を固定した
・サンプルを180℃に設定されたオーブン内に30分放置し、サンプルを加熱した
・クランプを取り除き、5mm/分のせん断引張速度でせん断接着力テストを行った
Claims (10)
- 熱膨張性、且つ熱硬化性の接着シートであって、
基材と、
前記基材の少なくとも一方の面に設けられる第1の層と、を備え、
前記第1の層は、
熱膨張性の第1の粒子を有する接着材部と、
前記第1の粒子とは異なる材質の第2の粒子と、を備え、
前記第2の粒子は、前記第1の粒子に比して大きく、
前記第2の粒子の一部は、前記接着材部の表面から突出して、前記接着材部が膨張する前段階に前記接着材部の前記表面を被接着部材から離間させ、加熱時に前記接着材部の熱膨張が生じて前記接着材部が前記第2の粒子間の隙間から溢れ出して、前記接着材部の前記表面を前記被接着部材に対して露出させる、接着シート。 - 前記第2の粒子は、前記接着材部の厚みよりも大きい、請求項1に記載の接着シート。
- 前記第2の粒子は、球状の形状を有する、請求項1又は2に記載の接着シート。
- 前記第2の粒子は、有機材料として、架橋(メタ)アクリル酸エステル共重合体、架橋ポリスチレン、架橋ウレタン、架橋シリコーン、またはナイロンによって形成される、請求項1~3の何れか一項に記載の接着シート。
- 前記第1の層は、前記基材の前記一方の面に設けられ、
前記基材の他方の面には、第2の層が設けられ、
前記第2の層は、
前記接着材部と、
前記接着材部の表面に設けられており、前記第1の粒子の熱膨張時に接着組成物が透過可能な接着材透過層と、を備える、請求項1~4の何れか一項に記載の接着シート。 - 前記接着材透過層は、そのガラス転移温度が、前記接着材部を構成する接着組成物の硬化開始温度よりも高い材料によって形成されている、請求項5に記載の接着シート。
- 前記接着材透過層は、不織布である、請求項5又は6に記載の接着シート。
- 前記第1の層は、前記基材の前記一方の面に設けられ、
前記基材の他方の面には、20℃での粘着性を有する第3の層が設けられている、請求項1~4の何れか一項に記載の接着シート。 - 前記第1の粒子の粒径は、50μmより小さい、請求項1~8の何れか一項に記載の接着シート。
- 前記第2の粒子の粒径は、10μmより大きい、請求項1~9の何れか一項に記載の接着シート。
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JP2020021585A JP7493347B2 (ja) | 2020-02-12 | 2020-02-12 | 熱膨張性、且つ熱硬化性の接着シート |
CN202180013968.6A CN115135695A (zh) | 2020-02-12 | 2021-01-26 | 可热膨胀和热固性粘合剂片材 |
PCT/IB2021/050597 WO2021161118A1 (en) | 2020-02-12 | 2021-01-26 | Thermally expandable and thermosetting adhesive sheet |
EP21753040.1A EP4103638A4 (en) | 2020-02-12 | 2021-01-26 | THERMALLY EXPANDABLE AND HEAT CURING ADHESIVE FILM |
US17/759,895 US20230131701A1 (en) | 2020-02-12 | 2021-01-26 | Thermally expandable and thermosetting adhesive sheet |
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JP5063016B2 (ja) * | 2006-03-23 | 2012-10-31 | リンテック株式会社 | 粘着シート及び剥離シート |
EP2298843A1 (en) * | 2007-10-19 | 2011-03-23 | Nitto Europe N.V | An adhesive tape |
US20110223394A1 (en) * | 2008-12-04 | 2011-09-15 | Nitto Denko Corporation | Double-faced pressure-sensitive adhesive tape for solar cell modules |
EP2733728A1 (en) * | 2011-07-15 | 2014-05-21 | Nitto Denko Corporation | Method for manufacturing electronic component and adhesive sheet used in method for manufacturing electronic component |
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- 2021-01-26 WO PCT/IB2021/050597 patent/WO2021161118A1/en unknown
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JP2007106963A (ja) | 2005-10-17 | 2007-04-26 | Three Bond Co Ltd | 加熱膨張性シート状接着剤組成物 |
JP2013023559A (ja) | 2011-07-20 | 2013-02-04 | Three M Innovative Properties Co | 熱硬化性熱膨張性接着シートおよびその製造方法 |
JP2013104044A (ja) | 2011-11-16 | 2013-05-30 | Three M Innovative Properties Co | 熱膨張性接着シートおよびその製造方法 |
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JP2021127371A (ja) | 2021-09-02 |
WO2021161118A1 (en) | 2021-08-19 |
CN115135695A (zh) | 2022-09-30 |
EP4103638A1 (en) | 2022-12-21 |
US20230131701A1 (en) | 2023-04-27 |
EP4103638A4 (en) | 2024-03-20 |
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