JP6473186B2 - 低温シーリング機能を備える硬化性エラストマー組成物 - Google Patents
低温シーリング機能を備える硬化性エラストマー組成物 Download PDFInfo
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- JP6473186B2 JP6473186B2 JP2017054863A JP2017054863A JP6473186B2 JP 6473186 B2 JP6473186 B2 JP 6473186B2 JP 2017054863 A JP2017054863 A JP 2017054863A JP 2017054863 A JP2017054863 A JP 2017054863A JP 6473186 B2 JP6473186 B2 JP 6473186B2
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- 239000004408 titanium dioxide Substances 0.000 description 1
- NMEPHPOFYLLFTK-UHFFFAOYSA-N trimethoxy(octyl)silane Chemical compound CCCCCCCC[Si](OC)(OC)OC NMEPHPOFYLLFTK-UHFFFAOYSA-N 0.000 description 1
- SEAZOECJMOZWTD-UHFFFAOYSA-N trimethoxy(oxiran-2-ylmethyl)silane Chemical compound CO[Si](OC)(OC)CC1CO1 SEAZOECJMOZWTD-UHFFFAOYSA-N 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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Description
多くのシーラント化学物質が、シーラント組成物における使用に適していると考えられる。これらの化学物質には、フルロエラストマー(fluroelastomer);EPDMおよび他の炭化水素;スチレンブロックエラストマー;C4およびC5モノマー、例えばイソプレンおよびイソブチレン;アクリレートおよびメタクリレート;アクリルエマルション;エチレンアクリレートエラストマー;官能化ポリアクリレート;シリル化アクリレート、シリコーン;シリル化ポリエーテル;シリル化ポリエステル;シリル化ポリアミド;ポリウレタン;シリル化ポリウレタン;プラスチゾルおよびポリ塩化ビニル;ポリスルフィドおよびポリチオエーテル;可撓性エポキシ;酢酸ビニル−エチレンラテックス;不飽和ポリエステル;ポリオレフィン、アミドおよびアセテート、例えばEVAが含まれる。非硬化性の化学物質、例えば樹脂油(例えばアマニ油)に基づくシーラントおよび歴青質シーラントも有用である。
硬化性のエラストマーシーラント組成物は、架橋性のエラストマーオリゴマーと反応するガラス質モノマーを含むことができる。ガラス質モノマーは、架橋性のエラストマーオリゴマーのガラス転移温度よりも高いガラス転移温度を有する。一般的に、ガラス質モノマーは20℃よりも高いガラス転移温度を有する。
硬化性のエラストマーシーラント組成物は、架橋性のエラストマーオリゴマーと反応するゴム状モノマーを含むことができる。ゴム状モノマーは、ガラス質モノマーのガラス転移温度よりも低いガラス転移温度を有する。一般的に、ゴム状モノマーは、20℃よりも低いガラス転移温度を有する。
硬化性のエラストマーシーラント組成物は、少なくとも一部を架橋し該組成物を硬化させる開始剤または架橋剤を含むことができる。
「DAROCUR」1173(2−ヒドロキシ−2−メチル−1−フェニル−1−プロパン)および4265(2,4,6−トリメチルベンゾイルジフェニル−ホスフィンオキシドおよび2−ヒドロキシ−2−メチル−1−フェニル−プロパン−1−オンの組合せ)が挙げられるが、これらに限定されない。また、可視光(例えば、青色光)に曝露することによって活性化される追加の光開始剤、例えば、dl−カンファーキノンおよび「IRGACURE」784DCも使用することができる。そのような追加の光開始剤の2つ以上の組合せも本発明の硬化性組成物で使用することができる。
硬化性のエラストマーシーラント組成物は、開始反応の速度を改良するために含むことができる。
硬化性のエラストマーシーラント組成物は、所望により充填剤を含むことができる。有用な充填剤には、例えば、リトポン、ケイ酸ジルコニウム、水酸化物、例えば、水酸化カルシウム、水酸化アルミニウム、水酸化マグネシウム、水酸化鉄等、ケイソウ土、炭酸塩、例えば、炭酸ナトリウム、炭酸カリウム、炭酸カルシウム又は炭酸マグネシウム、酸化物、例えば亜鉛、マグネシウム、クロム、セリウム、ジルコニウムの酸化物および酸化アルミニウムが含まれる。カルシウムクレー、ヒュームドシリカ、シランまたはシラザンで表面処理されているシリカ(例えばEvonil Industriesから入手できるAEROSIL商品など)、アクリレートまたはメタクリレートで表面処理されているシリカ(例えばEvonil Industriesから入手できるAEROSIL R7200またはR711など)、沈降シリカ、未処理シリカ、グラファイト、合成繊維およびそれらの混合物が含まれる。充填剤を使用する場合、充填剤は、未硬化の組成物および硬化した反応生成物に所望の物理的特性を効果的にもたらす濃度で使用でき、一般的に、組成物の約0.1重量%〜約70重量%の濃度で使用される。
硬化性のエラストマーシーラント組成物は、所望により酸化防止剤を含むことができる。有用な酸化防止剤には、Chiba Specialty Chemicals からIRGANOXの商品名で商業的に入手できるものが含まれる。酸化防止剤を使用する場合、硬化性組成物の約0.1〜約15重量%、例えば、約0.3〜約1重量%の量で使用される。
硬化性のエラストマーシーラント組成物は、反応改良剤を含むことができる。反応改良剤は、硬化性のエラストマーシーラント組成物の反応速度を増加または減少させる材料である。例えば、キノン(例えば、ヒドロキノン、モノメチルエーテルヒドロキノン(MEHQ)、ナフトキノンおよびアントラキノンなど)を、硬化性のエラストマーシーラント組成物でフリーラジカルを捕捉するために含むことができ、それによって、組成物の反応を遅くし、保存期間を延長する。反応改良剤を使用する場合、反応改良剤は硬化性組成物の約0.1〜約15重量%の範囲で使用できる。
硬化性のエラストマーシーラント組成物は、相溶性であり当業者に既知の1種以上の接着促進剤を含むことができる。有用な商業的に入手可能な接着促進剤の例には、オクチルトリメトキシシラン(Chemtura社から商品名A-137として入手できる)、グリシジルトリメトキシシラン(Chemtura社から商品名A-187として入手できる)、メタクリルオキシプロピルトリメトキシシラン(Chemtura社から商品名A−174で市販されている)、ビニルトリメトキシシラン、テトラエトキシシランおよびその部分的な縮合生成物、およびそれらの組み合わせが含まれる。接着促進剤が使用される場合、接着促進剤は硬化性組成物の約0.1〜約15重量%の範囲で使用できる。
硬化性のエラストマーシーラント組成物は、未硬化の組成物のレオロジー的特性を改良するために所望によりチキソトロピック剤を所望により含むことができる。有用なチキソトロピック剤の例には、例えば、シリカ、例えば、溶融シリカおよびヒュームドシリカなどが含まれ、それらの表面の化学的性質を変えるために処理してもよく、未処理であってもよい。実質的に、強化溶融シリカ、沈降シリカ、ヒュームドシリカまたは表面処理シリカを使用できる。
硬化性のエラストマーシーラント組成物は、透明であってもよく、半透明であってもよい。ある用途おいては、着色した組成物は、施される組成物の検査を可能とするために有益である。着色剤は、例えば顔料または染料であってもよく、目的とする用途に対して望ましい色をもたらすことができる。着色剤の例には、二酸化チタン、C.I. Pigment Blue 28, C.I. Pigment Yellow 53、およびフタロシアニンブルーBNが含まれる。ある用途において、紫外線照射の下で適用される組成物の検査を可能とするために、蛍光染料を添加できる。着色剤は、検査を買おうとするのに十分な量で存在する。着色剤が存在する場合、約0.002重量%以上の量で望ましく添加される。最大量は、原価を考慮して選択され、および組成物の硬化を邪魔しない量で選択される。より望ましくは、染料は、組成物の総量に基づき約0.002重量%〜約1.0重量%の量で存在する。
硬化性のエラストマーシーラント組成物は、代表的に、以下のものを含有できる:
約50〜99重量%の架橋性のエラストマーオリゴマー;
約1〜30重量%のガラス質モノマー;
約0〜30重量%のゴム状モノマー;
約0.01〜10重量%の開始剤または架橋剤;
約0〜5重量%の触媒;
約0〜70重量%の充填剤;
約0〜15重量%の酸化防止剤;
約0〜15重量%の反応改良剤;
約0〜15重量%の接着促進剤;
約0〜70重量%のレオロジー改良剤;
約0〜1.0重量%の着色剤。
引張強度 ASTMD412−98A
弾性率 ASTMD412−98A
伸び率 ASTMD412−98A
圧縮セットA ASTM D395。サンプルを、試験前に圧縮していない状態で室温まで冷却した。
圧縮セットB ASTM D395の改良。サンプルを、試験前に圧縮した状態で室温まで冷却した。
ガラス転移温度 Tg 示差走査熱量測定法(DSC)
1)予混合調製:開始剤、酸化防止剤、反応改良剤を含む全液体を充填する。固形分が残存しなくなるまで撹拌する。
2)予混合物にエラストマーオリゴマーを充填する。均質になるまで撹拌する。
3)充填剤を添加し、均質になるまで撹拌する。
4)真空にしてサンプルを脱気する。気泡を含まない材料を貯蔵容器内に充填する。
Claims (14)
- Tgを有する架橋性のエラストマーオリゴマー;
該エラストマーオリゴマーのTgより高いTgを有するモノマー、または該エラストマーオリゴマーのTgより高い組合せ平均Tgを有するモノマーの組合せ;
開始剤または架橋剤;ならびに
触媒;充填剤;酸化防止剤;反応改良剤;接着促進剤;希釈剤および着色剤のうちの所望による少なくとも1種;
から調製される架橋性シーラント組成物であって、
該組成物の硬化反応生成物は、該モノマーを用いずに上記のように調製した組成物と比べて、該硬化反応生成物のTgよりも高い温度にてより高いシーリング力を保持し、
該架橋性のエラストマーオリゴマーは、その骨格がポリイソブチレンであり、両末端に(メタ)アクリレート部分を有し;
該モノマーは、ステアリルアクリレート、トリメチルシクロヘキシルメタクリレート、イソボルニルメタクリレート、イソボルニルアクリレート、ジシクロペンタニルメタクリレート、ジシクロペンタニルアクリレート、イソオクチルアクリレート、イソデシルアクリレート、イソデシルメタクリレート、およびn−ラウリルメタクリレートからなるグループから選択される、単一官能性アクリレートモノマーまたは単一官能性メタクリレートモノマーであり、そして
該モノマーに対する該架橋性のエラストマーオリゴマーの比が、75:25〜95:5(質量比)である、
該架橋性シーラント組成物。 - 該架橋性のエラストマーオリゴマーが反応性部分の間に間隔を有し、オリゴマーにエラストマー特性をもたらす、請求項1に記載の組成物。
- 該架橋性のエラストマーオリゴマーがテレケリックの、(メタ)アクリレート末端化ポリイソブチレンである、請求項1に記載の組成物。
- 該モノマーが該架橋性のエラストマーオリゴマーと反応する、請求項1に記載の組成物。
- 該硬化反応生成物が、DSCによって示される1次および2次熱力学転移を有さない、請求項1に記載の組成物。
- 該モノマーが、ステアリルアクリレート、トリメチルシクロヘキシルメタクリレート、イソボルニルメタクリレート、イソボルニルアクリレート、ジシクロペンタニルメタクリレートおよびジシクロペンタニルアクリレートからなる群から選択される少なくとも1種である、請求項1に記載の組成物。
- 請求項1に記載の架橋性のシーラント組成物を使用すること、
を含む、硬化エラストマーシーラントの低温シーリング力を増加させる方法。 - チャンバーに流体連結している第1の所定のシーリング表面、
該第1のシーリング表面と並べられ、チャンバーに流体連結している第2の所定のシーリング表面、
該第1および第2の所定のシーリング表面の間に配置され、チャンバーをシーリングする請求項1の組成物の硬化反応生成物、
を含む、チャンバーを定める部品。 - 該第1のシーリング表面と該第2のシーリング表面が、相互に関連して動かない、請求項8に記載の部品。
- 反応生成物が第1および第2のシーリング表面のうちの1方とのみ接着接合する、請求項8に記載の部品。
- 該反応生成物が該第1および第2のシーリング表面の両方と接着接合する、請求項8に記載の部品。
- 該反応生成物が液体射出成形されるか、シーリング表面に成形される請求項8に記載の部品。
- 請求項1に記載の架橋性シーラント組成物を調製すること、
該組成物を第1の所定のシーリング表面上に供給すること、
該第1の所定のシーリング表面および供給した組成物と、第2の所定のシーリング表面とを位置合わせすること、および
該供給した組成物を、硬化することを含む、
液体ガスケット組成物としての請求項1に記載の架橋性シーラント組成物の使用方法。 - 該組成物を、該第1および第2のシーリング表面と接触させながら硬化させる、請求項13に記載の方法。
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US10005919B2 (en) | 2018-06-26 |
US20130287980A1 (en) | 2013-10-31 |
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JP2014517857A (ja) | 2014-07-24 |
US20150210882A1 (en) | 2015-07-30 |
KR20140045929A (ko) | 2014-04-17 |
ES2808700T3 (es) | 2021-03-01 |
CN103492504A (zh) | 2014-01-01 |
EP2702112A2 (en) | 2014-03-05 |
KR102092287B1 (ko) | 2020-03-23 |
WO2012149091A2 (en) | 2012-11-01 |
EP2702112A4 (en) | 2015-01-21 |
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