JP2021515082A - 接着剤組成物 - Google Patents
接着剤組成物 Download PDFInfo
- Publication number
- JP2021515082A JP2021515082A JP2020546131A JP2020546131A JP2021515082A JP 2021515082 A JP2021515082 A JP 2021515082A JP 2020546131 A JP2020546131 A JP 2020546131A JP 2020546131 A JP2020546131 A JP 2020546131A JP 2021515082 A JP2021515082 A JP 2021515082A
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- Prior art keywords
- adhesive
- weight
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- isocyanate
- Prior art date
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- KPADFPAILITQBG-UHFFFAOYSA-N non-4-ene Chemical compound CCCCC=CCCC KPADFPAILITQBG-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- VNTDZUDTQCZFKN-UHFFFAOYSA-L zinc 2,2-dimethyloctanoate Chemical compound [Zn++].CCCCCCC(C)(C)C([O-])=O.CCCCCCC(C)(C)C([O-])=O VNTDZUDTQCZFKN-UHFFFAOYSA-L 0.000 description 1
Classifications
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- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C08G18/2063—Heterocyclic amines; Salts thereof containing condensed heterocyclic rings having two nitrogen atoms in the condensed ring system
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- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
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- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/798—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing urethdione groups
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- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
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- C09J175/08—Polyurethanes from polyethers
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Abstract
Description
ポリイソシアネート化合物とポリオール化合物とを反応させることにより調製することができる。
Covestroから入手可能なDesmodur N3400は、ヘキサメチレンビスイソシアネートに基づく脂肪族ポリイソシアネートである。
Isonate M143は、官能基数が2.2であり40mPa−s粘度の粘度を有する液化MDIである。Isonate M143は、The Dow Chemical Company(Dow)から入手可能である。
Isonate M342は、Dowから入手可能な、官能基数が2であり580mPa−sの粘度を有するポリメリックMDIである。
VORANATE M220は、Dowから入手可能な、官能基数が2.7であり205mPa−sの粘度を有するポリメリックMDIである。
Metatin T713は、スズ系のジブチルスズメルカプチド触媒であり、ACIMAから入手可能である。
スズ系ジオクチルスズメルカプチド触媒であるジ−n−オクチルスズビス[イソオクチルメルカプトアセテート]。
POLYCAT SA−1/10は、フェノール性の対イオンを有する固体のDBU(1,8−ジアザビシクロ[5.4.0]ウンデク−7−エン)系の固体アミン触媒であり、ACIMAから入手可能である。
2,4,6−トリ(ジメチルアミノメチル)フェノールであるAncamine K54は、Air Productsから入手可能な第三級アミン活性化剤である。
Voranol 2000Lは、平均MWが1,000g/molでありOH価が約55mg KOH/gであるポリプロピレンホモポリマーであり、Dowから入手可能である。
Voranol CP4610は、平均MWが1,800g/molでありOH価が約35mg KOH/gである、グリセリンで開始されたエチレンオキシドに基づくプロポキシル化トリオールであり、Dowから入手可能である。
1,4ブタンジオールはArco Chemicalから入手可能であり、Schweizerhall Chemieにより販売されている。
Polestar 200Rは、約2マイクロメートル(μm)(90%>10μm)の平均粒径、8.5m2/gのBET表面、及び6.0〜6.5のpHを有する焼成カオリン(SiO255%、Al2O345%)である。Polestar 200RはIMERYSから入手可能である。
Aerosil R 202は、疎水性に修飾されたポリジメチルシロキサンで被覆されたヒュームドシリカであり、Evonik Industriesから入手可能である。
Printex 30は、Alzchemから供給されているカーボンブラックフィラーである。
Toyocat DB60は、第三級アミンと有機酸の塩に基づく触媒であり、Tosohから市販されている。
Vestinol 9は、100%のフタル酸ジイソノニルであり、T−715のプレポリマー技術において可塑剤として使用されており、Evonikから入手可能である。
Voranol 280は、ヒドロキシル価が280であり、官能基数が7であり、MWが400g/molであり、EWが200である、スクロースで開始されたオキシプロピレン−オキシエチレンポリオールである。VORANOL 280はDowから入手可能である。
VORAFORCETM 5300は、Dowから入手可能な、RTMプロセスにおいて炭素繊維強化複合材(CFRP)部品を製造するためのDowの樹脂グレードである。
BETAWIPETM 4800は、Dow Automotive Systemsから入手可能な溶剤系接着促進剤である。
長さ30cm〜50cmの接着剤ビーズを手作業でポリエチレン箔の上に押し出した。2Kポリウレタン接着剤の手作業による塗布は、例えば、直径8ミリメートル(mm)又は10mm、24段の混合エレメント、最低6barの塗布圧力のスタティックミキサーユニットが取り付けられたKroegerTS 400などのダブルカートリッジアプリケーターガンから行った。塗布した接着剤ビーズを、接着剤が木製のスパチュラの木の表面に貼りつかなくなるまで、木製のスパチュラで連続的に押し付ける。測定された時間を、接着剤の「オープンタイム」として定義する。
2K PU接着剤の反応性は、直径20mm、プレート間隔設定1mmの平行プレートを使用した振動モードでのレオロジーによって測定する。反応性の測定は、0.062%の一定の変形で10ヘルツ(Hz)で行う。複素粘度を時間に対してプロットし、粘度の勾配が30°を超えて変化する時を「反応性」とみなす。
せん断強度測定は、例えば、FHM 8606.00.00又は8606.04.00取り付け装置を有するせん断強度装置Zwick1435などの適切なせん断強度測定装置でDIN EN 1465(2009年7月)に従って行った。eコーティングされた基材は、100mm×25mm×0.8mmの寸法のeコーティングされた鋼製パネルであるCathoguard 500であった。eコーティングされた基材を、BETACLEANTM 3350(ヘプタン)洗浄溶剤溶液で洗浄した。接着剤塗布前の洗浄後の溶剤のフラッシュオフ時間は5分であった。CFRP基材は、100mm×45mm×2.2mmの寸法を有するDowからのVORAFORCETMグレードのパネル(CFRP VORAFORCETM 5300)であった。CFRP基材は、洗浄又は機械的前処理なしで研磨又は使用した。研磨を行う場合には、均一な光学的外観が得られるまで、濡れたCFRPパネル上で320の研磨パッドを使用して、研磨を手作業で行った。パネルは引き続いて80℃で8時間乾燥される。重ねせん断試験片のために、10mm×25mm×1.5mmの接着剤結合寸法を使用した。重ねせん断試験片は、23℃/50%r.h.で1時間の硬化時間後に、又はそれぞれ以下に説明する熱促進硬化プロセスの後に試験した。
熱促進硬化では、KTL−KTLの重ねせん断試験片の組立体などのeコーティングされた鋼基材(KTL)の組立体を、組み立て後にIR硬化装置の中に入れる。この試験に有用な重ねせん断試験片としては、炭素繊維強化プラスチック(CFRP)の組立体、CFRP−CFRP組立体、又はCFRP−eコーティングされた鋼の組立体も挙げることができる。
引張試験は、DIN527−2(2012年6月)に記載の試験に従って、室温で7日間硬化させた厚さ2mmの試験片(Dogbones 5Aと呼ぶ)を使用して行った。
以下の表Iは、比較例A〜D及び実施例1〜8の処方並びに接着剤組成物を試験した後の性能データの結果を表している。比較例A〜D及び実施例1〜8の接着剤組成物のオープンタイムは、上述したレオロジー反応性試験により測定した。重ねせん断強度は、eコーティングされた鋼基材を用いて、1時間及び7日間の室温で測定した。重ねせん断(「1h−重ねせん断」)強度は、15mm×25mm×1.5mmの接着寸法を有するeコーティングされた鋼基材で測定した。引張試験は、上述したDogbones 5A試験サンプルで行った。様々な接着剤を使用してDogbones 5Aサンプルで行った試験の結果を表Iに示す。実験室でのせん断IR熱硬化実験は、180秒の加熱サイクルで、45mm×15×1.5mmの接着寸法を有するCFK基材(Dowから入手可能)を用いて行った。引張特性は、厚さ2mmの試験片で測定した。
Claims (10)
- (a)
(ai)少なくとも1種の第1のポリイソシアネート化合物と、
(aii)約2.3以上の官能基数を有する少なくとも1種の第2のポリイソシアネート化合物と、
を含む少なくとも1種のイソシアネート成分;及び
(b)少なくとも1種のポリオール成分;
を含有する接着剤組成物。 - 前記少なくとも1種の第2のポリイソシアネート化合物が約2.7の官能基数を有する、請求項1に記載の組成物。
- 前記少なくとも1種の第2のポリイソシアネート化合物がポリメリックメチレンジフェニルイソシアネートである、請求項1に記載の組成物。
- 少なくとも1種の触媒を更に含み、前記少なくとも1種の触媒が少なくとも1種のスズ含有有機触媒である、請求項1に記載の組成物。
- 少なくとも1種のフィラーを更に含み、前記少なくとも1種のフィラーが、無機フィラー粒子、金属粒子、熱硬化性ポリマー粒子、熱可塑性粒子、カーボンブラック、炭素粒子、及びこれらの混合物からなる群から選択される、請求項1に記載の組成物。
- 前記少なくとも1種のイソシアネート成分(a)が約0.01重量パーセント〜約60重量パーセントの濃度で前記組成物中に存在し、前記少なくとも1種のポリオール成分(b)が約0.1重量パーセント〜約20重量パーセントの濃度で前記組成物中に存在する、請求項1に記載の組成物。
- 8分より長いオープンタイム;23℃、相対湿度50%で1時間後に約1.0メガパスカルを超える重ねせん断強度;及び約150パーセントを超える破断点伸びを有する、請求項1に記載の組成物。
- 2成分形ポリウレタン接着剤を含む、請求項1に記載の組成物。
- 3成分ポリウレタン接着剤組成物を調製するプロセスであって、
(a)
(ai)少なくとも1種の第1のポリイソシアネート化合物と、(aii)約2.3以上の官能基数を有する少なくとも1種の第2のポリイソシアネート化合物と、を含む少なくとも1種のイソシアネート成分;及び
(b)少なくとも1種のポリオール成分;
を混合することを含む、2成分形ポリウレタン接着剤組成物の調製方法。 - (I)少なくとも第1の基材を請求項1に記載の接着剤組成物と接触させること;
(II)前記少なくとも第1の基材上に存在する前記接着剤組成物に前記少なくとも第2の基材を接触させること;及び
(III)約5℃〜約80℃の温度で前記少なくとも第1と第2の基材を前記接着剤組成物と共に硬化させること;
を含む、少なくとも第1の基材を少なくとも第2の基材に接着させる方法。
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