JP7355645B2 - 補強材および補強構造 - Google Patents
補強材および補強構造 Download PDFInfo
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- JP7355645B2 JP7355645B2 JP2019239145A JP2019239145A JP7355645B2 JP 7355645 B2 JP7355645 B2 JP 7355645B2 JP 2019239145 A JP2019239145 A JP 2019239145A JP 2019239145 A JP2019239145 A JP 2019239145A JP 7355645 B2 JP7355645 B2 JP 7355645B2
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- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
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- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
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- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
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- DIHAURBCYGTGCV-UHFFFAOYSA-N xi-4,5-Dihydro-2,4(5)-dimethyl-1H-imidazole Chemical compound CC1CN=C(C)N1 DIHAURBCYGTGCV-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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Landscapes
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Description
図1に示す補強材1は、補強対象P(図2B参照)を補強するための部材である。補強対象Pとしては、例えば、アルミニウム板、ステンレス板、鉄板、銅板、亜鉛板、真鍮板などの金属パネルが挙げられる。なお、金属パネルは、例えば、自動車、鉄道車両、船舶、飛行機などの輸送機器、例えば、建築物などに使用できる。好ましくは、補強材1は、補強シートである。補強材1は、樹脂層2と、拘束層3とを備える。補強材1は、必要により、離型シート4を備える。
樹脂層2は、所定の厚みを有する。樹脂層2の厚み方向において、樹脂層2は、第1面S1と第2面S2とを有する。
熱硬化性樹脂は、可撓性エポキシ樹脂を含有する。可撓性エポキシ樹脂は、ビスフェノールA型エポキシ樹脂よりも高い可撓性を有する。好ましくは、可撓性エポキシ樹脂は、後述する芳香族系エポキシ樹脂よりも高い可撓性を有する。より好ましくは、可撓性エポキシ樹脂は、後述する他のエポキシ樹脂よりも高い可撓性を有する。
他のエポキシ樹脂としては、例えば、ビスフェノール型エポキシ樹脂(例えば、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、ビスフェノールS型エポキシ樹脂など)、ノボラック型エポキシ樹脂(例えば、フェノールノボラック型エポキシ樹脂、クレゾールノボラック型エポキシ樹脂など)、ナフタレン型エポキシ樹脂、ビフェニル型エポキシ樹脂などの芳香族系エポキシ樹脂、例えば、ジシクロ環型エポキシ樹脂、水素添加ビスフェノールA型エポキシ樹脂などの脂環式エポキシ樹脂、例えば、トリグリシジルイソシアヌレート、ヒダントインエポキシ樹脂、トリエポキシプロピルイソシアヌレート樹脂などの含窒素環エポキシ樹脂などが挙げられる。
ジエン系ゴムとしては、例えば、スチレン・ブタジエンゴム(SBR)、アクリロニトリル・ブタジエンゴム(NBR)、イソプレンゴム、ブタジエンゴムなどが挙げられる。好ましくは、NBRおよびポリブタジエンゴムの併用が挙げられる。
粘着付与樹脂は、樹脂層2に粘着性を付与する。
加硫剤は、加熱により、ジエン系ゴムを架橋(加硫)させる。
加硫促進剤は、加硫剤による加硫を促進させる。
熱硬化性樹脂硬化剤は、熱硬化性樹脂の硬化を促進させる。
発泡剤は、加熱により発泡する。樹脂層2が発泡剤を含有することにより、後述する補強層5の厚みを増大させて、補強部材11の強度を向上させることができる。
拘束層3は、樹脂層2の第1面S1の上に配置される。拘束層3は、後述する補強層5を拘束する。拘束層3が補強層5を拘束することにより、補強層5の靭性が、向上する。拘束層3は、樹脂層2の厚み方向において、所定の厚みを有する。
離型シート4は、樹脂層2の第2面S2の上に配置される。離型シート4は、樹脂層2の第2面S2の上に配置された状態で、樹脂層2を保護する。離型シート4は、樹脂層2から剥離可能である。離型シート4としては、例えば、公知の離型紙などを用いることができる。
次に、補強材1による補強対象Pの補強方法について説明する。
この補強材1によれば、図1に示す樹脂層2が、特定の軟化温度と特定の臭素価とを有する粘着付与樹脂を含有する。
実施例1
以下の材料(1)から(8)を混合して樹脂組成物を調製した。
可撓性エポキシ樹脂(ダイマー酸変性エポキシ樹脂、エポキシ当量600~700g/eq、三菱ケミカル社製、「jER872」)70質量部
水素添加ビスフェノールA型エポキシ樹脂(エポキシ当量215g/eq、ADEKA社製、「EP-4080E」)30質量部
(2)ジエン系ゴム
ポリブタジエンジエン系ゴム(旭化成ケミカルズ社製、「タフデン2003」)40質量部
アクリロニトリルブタジエンジエン系ゴム(日本ゼオン社製、「Nipol 1052J」)10質量部
(3)粘着付与樹脂
脂肪族芳香族共重合系石油樹脂(東ソー社製、「ペトロタック90HM」)50質量部
なお、「ペトロタック90HM」は、表1中において、「90HM」と記載される。
硫黄12質量部(鶴見化学工業社製、「金華印微粉硫黄」)
(5)加硫促進剤
チアゾール系加硫促進剤6質量部(大内新興化学社製、「ノクセラーDM」)
(6)熱硬化性樹脂硬化剤
ジシアンジアミド(日本カーバイド鉱業社製)3質量部
(7)発泡剤
4,4’-オキシビス(ベンゼンスルホニルヒドラジド)(OBSH)2.5質量部(永和化成工業社製、「ネオセルボンN#1000S」)
(8)充填材
重質炭酸カルシウム50質量部(丸尾カルシウム社製)
実施例2、3、比較例1~3
粘着付与樹脂を表1に記載の粘着付与樹脂に変えた以外は、実施例1と同様にして、補強材を得た。
各実施例および各比較例の補強材から、ベルト状の試験片を切り出した。試験片の幅(試験片の長手方向と直交する方向の長さ)は、25mmであった。試験片から離型紙を剥がして、5℃雰囲気下で、2kgのローラにより、鋼板に圧着した。試験片を鋼板に圧着してから30分後に、5℃雰囲気下で、引張圧縮試験機テクノグラフTG-5KN(ミネベアミツミ社製)を用いて、90°ピール試験(引張速度300mm/分)により、粘着力(N/25mm)を測定した。結果を表1に示す。
各実施例および各比較例の補強材を、離型紙を剥がして、補強対象としての冷間圧延鋼板(日本テストパネル社製、SPCC-SD、幅:25mm、長さ:150mm、厚さ0.8mm)の全面に、20℃雰囲気下で貼った。
2 樹脂層
3 拘束層
5 補強層
10 補強構造
11 補強部材
P 補強対象
Claims (8)
- 熱硬化性樹脂と、ジエン系ゴムと、粘着付与樹脂と、加硫剤とを含有する樹脂層と、
前記樹脂層の上に配置された拘束層と
を備え、
前記熱硬化性樹脂は、エポキシ当量が300g/eq以上である可撓性エポキシ樹脂を含有し、
前記粘着付与樹脂の軟化温度は、75℃以上、100℃以下であり、
前記粘着付与樹脂の臭素価は、30gBr2/100g以上であることを特徴とする、補強材。 - 前記粘着付与樹脂が、脂肪族単量体に由来する構造単位と芳香族単量体に由来する構造単位とを含有する脂肪族芳香族共重合系石油樹脂であることを特徴とする、請求項1に記載の補強材。
- 脂肪族単量体に由来する構造単位と芳香族単量体に由来する構造単位との合計に対する前記脂肪族単量体に由来する構造単位の割合が、50質量%よりも高いことを特徴とする、請求項2に記載の補強材。
- 前記可撓性エポキシ樹脂は、ダイマー酸変性エポキシ樹脂である、請求項1~3のいずれか一項に記載の補強材。
- 前記熱硬化性樹脂は、前記熱硬化性樹脂100質量部中に、50質量部以上の前記可撓性エポキシ樹脂を含有する、請求項1~4のいずれか一項に記載の補強材。
- 前記樹脂層は、前記熱硬化性樹脂100質量部に対して、20質量部以上の前記粘着付与樹脂を含有する、請求項1~5のいずれか一項に記載の補強材。
- 前記樹脂層は、前記熱硬化性樹脂100質量部に対して、10質量部以上の前記ジエン系ゴムを含有する、請求項1~6のいずれか一項に記載の補強材。
- 補強対象と、前記補強対象を補強する補強部材とを備え、
前記補強部材は、
請求項1に記載の前記樹脂層の硬化物からなる補強層であって、前記補強対象の上に配置された補強層と、
請求項1に記載の前記拘束層であって、前記補強層の上に配置された前記拘束層と
を備えることを特徴とする、補強構造。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019239145A JP7355645B2 (ja) | 2019-12-27 | 2019-12-27 | 補強材および補強構造 |
CN202080090354.3A CN114845869A (zh) | 2019-12-27 | 2020-10-15 | 增强材料和增强结构 |
PCT/JP2020/038961 WO2021131259A1 (ja) | 2019-12-27 | 2020-10-15 | 補強材および補強構造 |
US17/788,643 US20230035852A1 (en) | 2019-12-27 | 2020-10-15 | Reinforcing material and reinforcing structure |
EP20905285.1A EP4082767A4 (en) | 2019-12-27 | 2020-10-15 | REINFORCEMENT MATERIAL AND REINFORCEMENT STRUCTURE |
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JP2007160917A (ja) | 2005-11-17 | 2007-06-28 | Nitto Denko Corp | 鋼板補強シート |
JP2008030257A (ja) | 2006-07-27 | 2008-02-14 | Nippon Tokushu Toryo Co Ltd | 制振性能付与型鋼板補強材 |
JP2009039909A (ja) | 2007-08-07 | 2009-02-26 | Toyota Motor Corp | 多層型鋼板補強材 |
JP2009161659A (ja) | 2008-01-07 | 2009-07-23 | Nitto Denko Corp | 制振補強組成物、制振補強材、および薄板の制振補強方法 |
JP2012076279A (ja) | 2010-09-30 | 2012-04-19 | Nitto Denko Corp | 金属板の補強方法および補強構造 |
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JPH10140125A (ja) * | 1996-11-11 | 1998-05-26 | Nissan Motor Co Ltd | パネル用剛性補強材 |
JP2004189764A (ja) * | 2002-12-06 | 2004-07-08 | Idemitsu Petrochem Co Ltd | 石油樹脂及び水素添加石油樹脂の製造方法 |
JP3725894B2 (ja) | 2003-07-04 | 2005-12-14 | 日東電工株式会社 | 鋼板補強シート |
JP2010275488A (ja) * | 2009-05-29 | 2010-12-09 | Inoac Corp | 太陽電池素子封止材 |
JP2012056112A (ja) * | 2010-09-06 | 2012-03-22 | Nitto Denko Corp | 補強シートおよび補強方法 |
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JP2007160917A (ja) | 2005-11-17 | 2007-06-28 | Nitto Denko Corp | 鋼板補強シート |
JP2008030257A (ja) | 2006-07-27 | 2008-02-14 | Nippon Tokushu Toryo Co Ltd | 制振性能付与型鋼板補強材 |
JP2009039909A (ja) | 2007-08-07 | 2009-02-26 | Toyota Motor Corp | 多層型鋼板補強材 |
JP2009161659A (ja) | 2008-01-07 | 2009-07-23 | Nitto Denko Corp | 制振補強組成物、制振補強材、および薄板の制振補強方法 |
JP2012076279A (ja) | 2010-09-30 | 2012-04-19 | Nitto Denko Corp | 金属板の補強方法および補強構造 |
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EP4082767A1 (en) | 2022-11-02 |
JP2021107126A (ja) | 2021-07-29 |
EP4082767A4 (en) | 2024-02-07 |
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