JP6433651B2 - 接着剤、接着剤付部材及び部材間の接続方法 - Google Patents
接着剤、接着剤付部材及び部材間の接続方法 Download PDFInfo
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Description
本実施形態に係る液状組成物は、(a)放射線重合性官能基を有しない熱硬化性樹脂、(b)硬化剤と、(c)放射線重合性官能基及び熱硬化性官能基を有する第1の重合性化合物と、(d)放射線重合性官能基を有し、熱硬化性官能基を有しない第2の重合性化合物と、(e)熱膨張性カプセルと、を含有する。
(a)成分としては、放射線重合性官能基を有しない熱硬化性樹脂であれば特に限定されないが、例えば、エポキシ樹脂又はシアネートエステル樹脂を挙げることができる。
(b)成分は、(a)成分である熱硬化性樹脂の種類により選択することができる。
(c)成分としては、放射線重合性官能基及び熱硬化性官能基を、それぞれ1つ以上有する重合性化合物であれば、特に限定されない。(c)成分を含むことにより、(a)成分又は(b)成分との相溶性を向上することができ、かつ、形成される接着剤層の接着力を高めることができる。
(d)成分としては、放射線重合性官能基を少なくとも1つ有し、熱硬化性官能基を有しない重合性化合物であれば、特に限定されない。(d)成分は、1種を単独で用いても2種以上を混合して用いてもよい。
(e)成分として、膨張剤である低沸点化合物を熱可塑性樹脂で包み込んだ熱膨張性マイクロカプセルを用いることができる。熱膨張性マイクロカプセルは、加熱されると、殻(シェル)を構成する熱可塑性樹脂が軟化すると共に、内包されている膨張剤がガス化するため蒸気圧が上昇して殻が押し広げられ、膨張する。
本実施形態に係る液状組成物は、放射線照射による(c)成分及び(d)成分の反応を促進する観点から、光重合開始剤を更に含有してもよい。
図1は、本実施形態に係る部材間の接合方法を模式的に示す断面図である。
まず、図1の(a)に示すように、液状組成物を被着体である第1の部材2に塗布して、接着剤層1を形成した後、該接着剤層1に放射線を照射して半固化させた接着剤付部材を準備する。
次に、図1の(b)に示すように、上記半固化した接着剤層1の上方に、別の被着体である第2の部材4を配置した後、半固化した接着剤層1を加熱する。
加熱後、図1の(c)に示すように、加熱により半固化した接着剤層1が膨張して固化した接合層10が形成されて、第1の部材2と第2の部材4とが間隙を埋めることで、第1の部材2と第2の部材4とが接合される。硬化後の強固な接着強度を確保する観点では、半固化した接着剤層1の加熱後の厚み方向の膨張倍率は、5倍以下が好ましく、3倍以下がより好ましい。
各成分を表1に示す配合量(質量部)でそれぞれ混合して、液状組成物を調製した。なお、表1に示す成分は、以下のとおりである。
YDPN−638(フェノールノボラック型エポキシ樹脂、新日鉄住金化学株式会社製)
TACTIX742(エポキシ樹脂、Huntsman製)
BT−2160RX(シアネートエステル樹脂、三菱ガス化学株式会社製)
(b)成分:硬化剤
CG1200G(ジシアンジアミド、Air Products製)
2P4MHZ−PW(イミダゾール誘導体、四国化成工業株式会社製)
2MA−OK−PW(イミダゾール誘導体、四国化成工業株式会社製)
ナフテン酸亜鉛(和光純薬工業株式会社製)
(c)成分:第1の重合性化合物
GMA(グリシジルメタクリレート、三菱レイヨン株式会社製)
(d)成分:第2の重合性化合物
FA513M(ジシクロペンタニルメタクリレート、日立化成株式会社製)
(e)成分:熱膨張性カプセル
FN100SS(松本油脂製薬株式会社製)
FN100M(松本油脂製薬株式会社製)
(f)成分:光重合開始剤
Irgacure819(BASF製)
Irgacure184(BASF製)
(g)成分:コアシェルポリマー粒子
AC3355(アイカ工業株式会社製)
(h)成分:炭酸カルシウム粉末
ホワイトンSB赤(白石カルシウム株式会社製)
(i)成分:酸化防止剤
Irganox1010(BASF製)
(j)成分:微細シリカ
RX200(日本アエロジル株式会社製)
TS720(Cabot社製)
半固化した接着剤層のタック性を、以下の手順で測定した。
まず、上記照射条件で0.5mm厚に半固化した接着剤層を形成したものを4枚積層した厚み約2mmの試験片を作製した。次いで、25mm径のParallel Plateに試験片を挟み込み、試料温度25℃、測定周波数1Hzにおけるせん断貯蔵弾性率を、Rheometrics社製のRDA−IIを用いて測定した。貯蔵弾性率1000kPaを越える試料に対しては、試料を丸めて直径約8mm×高さ約10mmの円柱状の試験片を作製し、7.9mm径のParallel Plateに挟み込み、同様の条件下で測定した。結果を表2に示す。
25×100×1.6mm(厚み)の冷間圧延鋼板を接着面積が幅25mm×長さ10mmとなるように、金属線スペーサーを介して半固化した接着剤層の上方に配置(クリップで加圧保持)した試験片を作製した。この試験片を、誘導加熱装置(アロニクス株式会社製、HOTSHOT2)で平均昇温速度16.7℃/分で25℃から150℃に加熱した後、150℃オーブンに20分間放置して、接着剤層を硬化(固化)させることで、評価用試験片を作製した。スペーサーの厚みは、半固化した接着剤層の厚みに対し、1.5倍〜9倍となる間隙を設けるように変更した。例えば、表2中の「1.5倍」とは、スペーサーの厚みが、半固化した接着剤層の厚みの1.5倍であることを意味する。
Claims (6)
- 放射線重合性官能基を有しない熱硬化性樹脂と、
硬化剤と、
放射線重合性官能基及び熱硬化性官能基を有する第1の重合性化合物と、
放射線重合性官能基を有し、熱硬化性官能基を有しない第2の重合性化合物と、
熱膨張性カプセルと、
を含有する液状組成物を第1の部材表面に塗布して、接着剤層を形成する工程と、
前記接着剤層に放射線を照射して、前記接着剤層を半固化する工程と、
前記第1の部材表面と対向するように、前記半固化した接着剤層の上方に第2の部材を配置する工程と、
加熱により前記半固化した接着剤層が膨張して固化し、前記第1の部材と前記第2の部材とを接合する工程と、を有し、
前記半固化した接着剤層のせん断貯蔵弾性率が、25℃、1Hzで100kPa以上10,000kPa以下である、
部材間の接合方法。 - 前記熱硬化性樹脂が、エポキシ樹脂又はシアネートエステル樹脂である、請求項1に記載の方法。
- 放射線重合性官能基を有しない熱硬化性樹脂と、
硬化剤と、
放射線重合性官能基及び熱硬化性官能基を有する第1の重合性化合物と、
放射線重合性官能基を有し、熱硬化性官能基を有しない第2の重合性化合物と、
熱膨張性カプセルと、
を含有する液状組成物を含み、
放射線を照射して半固化した場合に、せん断貯蔵弾性率が、25℃、1Hzで100kPa以上10,000kPa以下となる、
間隙の充填に用いられる接着剤。 - 前記熱硬化性樹脂が、エポキシ樹脂又はシアネートエステル樹脂である、請求項3に記載の接着剤。
- 放射線重合性官能基を有しない熱硬化性樹脂と、
硬化剤と、
放射線重合性官能基及び熱硬化性官能基を有する第1の重合性化合物と、
放射線重合性官能基を有し、熱硬化性官能基を有しない第2の重合性化合物と、
熱膨張性カプセルと、
を含有し、放射線の照射により半固化されており、かつ、せん断貯蔵弾性率が、25℃、1Hzで100kPa以上10,000kPa以下である、接着剤層を備える、接着剤付部材。 - 前記熱硬化性樹脂が、エポキシ樹脂又はシアネートエステル樹脂である、請求項5に記載の接着剤付部材。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2013241148A JP6433651B2 (ja) | 2013-11-21 | 2013-11-21 | 接着剤、接着剤付部材及び部材間の接続方法 |
EP14809227.3A EP3071611B1 (en) | 2013-11-21 | 2014-11-20 | Adhesive, adhesive-backed member, and method for connecting between members |
BR112016011647A BR112016011647A2 (pt) | 2013-11-21 | 2014-11-20 | Adesivo, membro com face adesiva, e método para conexão entre membros |
CN201480063272.4A CN105745236B (zh) | 2013-11-21 | 2014-11-20 | 粘合剂、带粘合剂背衬的构件以及用于构件之间连接的方法 |
US15/037,690 US20160298008A1 (en) | 2013-11-21 | 2014-11-20 | Adhesive, adhesive-backed member, and method for connecting between members |
KR1020167015932A KR20160088349A (ko) | 2013-11-21 | 2014-11-20 | 접착제, 접착제-배킹된 부재, 및 부재들 사이를 결합하기 위한 방법 |
PCT/US2014/066556 WO2015077419A1 (en) | 2013-11-21 | 2014-11-20 | Adhesive, adhesive-backed member, and method for connecting between members |
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CN105062377A (zh) * | 2015-09-01 | 2015-11-18 | 京东方科技集团股份有限公司 | 封框胶及其固化方法 |
WO2017040883A1 (en) | 2015-09-04 | 2017-03-09 | Carbon, Inc. | Cyanate ester dual cure resins for additive manufacturing |
JP6845226B2 (ja) * | 2015-09-09 | 2021-03-17 | カーボン,インコーポレイテッド | 積層造形用エポキシ二重硬化樹脂 |
US10647873B2 (en) | 2015-10-30 | 2020-05-12 | Carbon, Inc. | Dual cure article of manufacture with portions of differing solubility |
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- 2013-11-21 JP JP2013241148A patent/JP6433651B2/ja not_active Expired - Fee Related
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- 2014-11-20 KR KR1020167015932A patent/KR20160088349A/ko not_active Application Discontinuation
- 2014-11-20 BR BR112016011647A patent/BR112016011647A2/pt not_active Application Discontinuation
- 2014-11-20 WO PCT/US2014/066556 patent/WO2015077419A1/en active Application Filing
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KR20160088349A (ko) | 2016-07-25 |
EP3071611A1 (en) | 2016-09-28 |
CN105745236A (zh) | 2016-07-06 |
JP2015101607A (ja) | 2015-06-04 |
CN105745236B (zh) | 2020-07-31 |
EP3071611B1 (en) | 2021-03-31 |
BR112016011647A2 (pt) | 2017-08-08 |
US20160298008A1 (en) | 2016-10-13 |
WO2015077419A1 (en) | 2015-05-28 |
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