JP6477473B2 - 湿気硬化性組成物 - Google Patents
湿気硬化性組成物 Download PDFInfo
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- JP6477473B2 JP6477473B2 JP2015529482A JP2015529482A JP6477473B2 JP 6477473 B2 JP6477473 B2 JP 6477473B2 JP 2015529482 A JP2015529482 A JP 2015529482A JP 2015529482 A JP2015529482 A JP 2015529482A JP 6477473 B2 JP6477473 B2 JP 6477473B2
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- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 125000005425 toluyl group Chemical group 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- ZESXUEKAXSBANL-UHFFFAOYSA-N trifluoromethyl prop-2-enoate Chemical compound FC(F)(F)OC(=O)C=C ZESXUEKAXSBANL-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L43/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium or a metal; Compositions of derivatives of such polymers
- C08L43/04—Homopolymers or copolymers of monomers containing silicon
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- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
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- C09J143/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Adhesives based on derivatives of such polymers
- C09J143/04—Homopolymers or copolymers of monomers containing silicon
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- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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- C09K3/00—Materials not provided for elsewhere
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- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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Description
(B)成分:一般式1のポリジメチルシロキサン
(C)成分:シリケート
(D)成分:硬化触媒。
[実施例1〜4、比較例1〜11]
実施例1〜4、比較例1〜11の湿気硬化性組成物を調製するために下記成分を準備した。(以下、湿気硬化性組成物を単に、組成物と呼ぶ。)
(A)成分:主鎖が(メタ)アクリルモノマーの重合体であり分子内に加水分解性シリル基を有するオリゴマー
・両末端に2のトリメトキシシリル基を有する(すなわち、両末端に1ずつのトリメトキシシリル基を有する)ポリアクリル重合体(XMAP(登録商標) OR110S 株式会社カネカ製)
(B)成分:一般式1のポリジメチルシロキサン
・無変性ポリジメチルシロキサン(動粘度(25℃):100mm2/s)(KF96−100cs 信越化学工業株式会社製)(一般式1において、R1=メチル基、R2=メチル基)
・側鎖型エポキシ変性ポリジメチルシロキサン(動粘度(25℃):1500mm2/s)(官能基当量:350g/mol)(KF−101 信越化学工業株式会社製)(一般式1において、R1=メチル基、R2=エポキシ基を有する有機基、ただし、両末端のR2はメチル基)
・両末端エポキシ変性ポリジメチルシロキサン(動粘度(25℃):15mm2/s)(官能基当量:490g/mol)(KF−105 信越化学工業株式会社製)(一般式1において、m=0、R1=メチル基、R2=エポキシ基を有する有機基)
(B’)成分:(B)成分以外のポリジメチルシロキサン
・側鎖型アミン変性ポリジメチルシロキサン(動粘度(25℃):110mm2/s)(官能基当量:5000g/mol)(KF−865 信越化学工業株式会社製)
・両末端型アミン変性ポリジメチルシロキサン(動粘度(25℃):90mm2/s)(官能基当量:2200g/mol)(KF−8012 信越化学工業株式会社製)
・側鎖型メルカプト変性ポリジメチルシロキサン(動粘度(25℃):200mm2/s)(官能基当量:1900g/mol)(KF−2001 信越化学工業株式会社製)
・側鎖型ハイドロジェン変性ポリジメチルシロキサン(動粘度(25℃):20mm2/s)(官能基当量:60g/mol)(KF−99 信越化学工業株式会社製)
(C)成分:シリケート
・エチルポリシリケート(エチルシリケート40 コルコート株式会社製)(一般式2において、n=5、R1=エチル基)
(D)成分:硬化触媒
・ジブチル錫ビスアセチルアセトナート(ネオスタンU−220H 日東化成株式会社製)
(E)成分:アミノ基を有するシラン系カップリング剤
・3−アミノプロピルトリメトキシシラン(KBM−903 信越化学工業株式会社製)
その他の成分
・メチルトリメトキシシシラン(KBM−13 信越化学工業株式会社製)
・炭酸カルシウム充填剤(ソフトン1800 備北粉化工業株式会社製)
・オクチルシラン処理ヒュームドシリカ(アエロジルR805 日本アエロジル株式会社製)
(A)成分、(B)成分(比較例の場合は(B’)成分)、(C)成分、(E)成分、およびその他の成分を秤量して均一になる様に撹拌機にて脱泡しながら1時間撹拌した。その後、(D)成分を添加して、脱泡しながら30分撹拌した。詳細な調製量は表1に従い、数値は全て質量部で表記する。
容器内に5mm以上の厚さに組成物を注入した後、25℃で50%RH雰囲気下にて24時間放置した。表面の硬化物を引き剥がして厚さを測定した。その結果を「深部硬化性(mm)」とした。深部硬化性は2.0mm以上あることが好ましい。表2において、「未硬化」とは全く硬化しなかった場合であり、「−」とは硬化物内部が発泡したために計測が不可能であった場合を示す。
組成物を直径50mm×高さ5mm以上の容器に充填して、25℃で50%RH雰囲気下にて7日間放置して硬化物を作製した。デュロメーター硬さ試験機(JIS−A)を用いて加圧10Nで硬度計を押し当てて硬度の最大値を、「硬度(単位無し)」として測定した。詳細は、JIS K 6249:2003に準ずる。組成物が未硬化または硬化物内部に発泡が有る場合は、測定ができないため「−」と表記する。
組成物を厚さ2mmの板状に塗布して、25℃で50%RH雰囲気下にて7日間放置して硬化物を作製した。板状の硬化物からダンベル5号の形状のテストピースを切り出した。テストピースに基線間距離を25mmとして、引張試験機により500mm/minで引っ張り、ダンベル形状のテストピースが破断するまでの基線間距離を測定して、(破断時基線間距離−初期基線間距離)/初期基線間距離×100から計算して、「伸び率(%)」を測定すると共に、ダンベルの最大強度から「引張強さ(MPa)」を計算した。詳細は、JIS K 6249:2003に準ずる。組成物が未硬化または硬化物内部に発泡が有る場合は、測定ができないため「−」と表記する。
アルミニウム製の幅25mm×長さ100mm×厚さ1mmの部材を用いて、10mm×25mmの接着面積(クリアランス1mm)で組成物により2枚の部材を貼り合わせて固定した。25℃で50%RH雰囲気にて7日間放置して組成物を硬化してテストピースを作製した。引張試験機により50mm/minで引っ張り、最大強度から「引張剪断接着力(MPa)」を計算した。詳細は、JIS K 6249:2003に準ずる。組成物が未硬化または硬化物内部に発泡が有る場合は、測定ができないため「−」と表記する。
上記の引張剪断接着力測定におけるテストピースを引っ張って引張剪断接着力を測定した後、接着面の状態を目視で確認することで確認を行った。接着面に泡が有る場合は「有り」とし、泡が無い場合は「無し」とする。当該泡は硬化時に発生したものと考えられ、接着またはシールにおける組成物の特性が低下させないためには、泡が無いことが好ましい。
発泡確認、ショアーA硬度測定、引張強さ測定、伸び率測定、引張剪断接着力測定について初期測定後、別のテストピースをギアオイルに浸漬し、160℃×240時間放置した。取り出し後、室温まで戻ったテストピースからオイルを拭き取り測定を行った。初期と試験後を変化および変化率としてまとめた。発泡確認については、耐久試験後に発泡が確認されなかった場合は「○」で、確認された場合は「×」で、「変化」を表記する。一方、ショアーA硬度測定、引張強さ測定、伸び率測定、引張剪断接着力測定については、(耐久試験後の測定値−初期の測定値)/初期の測定値×100の計算式で計算を行い、「変化率(%)」を算出した。変化率は±100%の範囲に入ることが好ましい。組成物が未硬化または初期の段階で発泡が有る場合は、測定ができないため「−」と表記する。
Claims (8)
- (A)〜(D)成分を含み、(A)成分100質量部に対して(C)成分を0.5〜5.0質量部含む湿気硬化性組成物。
(A)成分:主鎖が(メタ)アクリルモノマーの重合体であり分子内に加水分解性シリル基を有するオリゴマー
(B)成分:下記の一般式1のポリジアルキルシロキサン
(nは1以上の整数、mは0以上の整数であり、R1はそれぞれ独立してメチル基、エチル基、プロピル基のいずれかを示し、R2はそれぞれ独立してR1またはエポキシ基を有する有機基を示す。)
(C)成分:下記の一般式2のシリケート
(nは1〜10の整数で、R 1 はそれぞれ独立してメチル基、エチル基およびプロピル基のいずれかを示す。)
(D)成分:硬化触媒 - (E)成分として、アミノ基を有するシラン系カップリング剤をさらに含む請求項1に記載の湿気硬化性組成物。
- 前記(A)成分が、主鎖の両末端に加水分解性シリル基を1ずつ有するオリゴマーである請求項1または2に記載の湿気硬化性組成物。
- 前記(D)成分が、有機錫触媒である請求項1〜3のいずれかに記載の湿気硬化性組成物。
- 前記(D)成分が、有機チタン触媒である請求項1〜3のいずれかに記載の湿気硬化性組成物。
- 請求項1〜5のいずれかに記載の湿気硬化性組成物からなる接着剤。
- 請求項1〜5のいずれかに記載の湿気硬化性組成物からなるシール剤。
- 請求項1〜5のいずれかに記載の湿気硬化性組成物からなるポッティング剤。
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