JP5869104B2 - セメントベースの基礎構造体のための改良されたポリマー組成物 - Google Patents
セメントベースの基礎構造体のための改良されたポリマー組成物 Download PDFInfo
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- JP5869104B2 JP5869104B2 JP2014509284A JP2014509284A JP5869104B2 JP 5869104 B2 JP5869104 B2 JP 5869104B2 JP 2014509284 A JP2014509284 A JP 2014509284A JP 2014509284 A JP2014509284 A JP 2014509284A JP 5869104 B2 JP5869104 B2 JP 5869104B2
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Description
市販の袋入り乾燥コンクリートミックス(Ready-Mix)を、4000psi袋入り混合物に適用される取扱説明書に従ってきれいな水と混合し、一連の12インチの円形コンクリートスラブを成型した。次いで、均質なコンクリート混合物を、ゴム製基板上に置いた高さ3.5インチのスチール製フレームで形成された型に流し込んだ。これは3リフトで行い、各リフトは振動させ、締め固めした後、仕上げ鏝(smooth trowel)で仕上げた。48時間以内にフレームを外し、試料スラブを28日間養生した。次いで固形分100%のエポキシ(3層コーティング)を、3.5インチの側面と、頂面及び底面の縁部2インチに塗布し、試料スラブの頂面及び底面の中央に直径9.75インチのコンクリート露出領域を残した。これを7日間養生した。次いで試料を、メチルアクリレート10重量%及び塩化ビニリデン90重量%を含有する第一共重合体と、ブチルアクリレート5重量%、アクリロニトリル5重量%、及び塩化ビニリデン90重量%を含有する第二共重合体との混合物を固形分として22重量%含有する充分な量の水性混合物でコーティングし、コーティング1層につき14m2当たり2.8ポンドの固体コーティングを、1時間あけて2層設けた。水性組成物のpHは2であった。4時間後、試料を試験機に入れ、水蒸気を所望量まで増加させた。
比較のために、各共重合体を別個に用いて事例1に記載した試験を行った。これら試験の結果を下記表2に示す。結果から、どちらの共重合体も、単独で使用した場合には、本発明の共重合体混合物が達成した望ましい特性を有するコーティングは形成できないことがわかった。VC/メチルアクリレートのコーティングは、施したコンクリートに対して実質的に付着性を示さなかった。さらに、得られたVC/メチルアクリレートコーティングは、脆弱で、軽い衝撃力で粉々に粉砕した。よってVC/メチルアクリレートのコーティングは、本発明が達成する水分ブロック性能及び付着性を付与するのに適切なコーティングを形成できない。結果からはさらに、VC/ブチルアクリレート共重合体を単独で使用した場合には、水分ブロック性能が低い(試験値が3.0を超えるものは不合格)コーティングが形成され、硬化したコーティングには全体に微小クラックが入り、コーティングのセメント基礎構造表面への浸透は4ミル未満であることがわかった。
塩化ビニリデン/メチルアクリレート共重合体と塩化ビニリデン/ブチルアクリレート共重合体との30:70混合物を固形分として40重量%含有する水分散液について、ASTM D4060-10 (テーバー摩耗試験機による有機コーティングの耐摩耗性標準試験方法:Standard Test Method for Abrasion Resistance of Organic Coating by Taber Abraser)に規定される試験方法によって耐摩耗性を、ASTM C1315-11の試験方法に従って耐酸/アルカリ性を、それぞれ試験した。13×9×0.5インチ(330×229×13mm)の白色セメントモルタル製テストパネル四枚を、ASTM D1734-07「コーティング試験用セメント質パネル製造の標準的技法:Standard Practice for Making Cementitious Panels for Testing Coatings」に従って作製した。パネルは金鏝で仕上げ、2枚のパネルには30:70混合物の水分散液をスプレーコーティングし、0.85平方フィート0.26m2当たり12.7mlのコーティングを設けた。コーティングは、フレッシュモルタル打設約3時間後に湿潤条件下でパネルに塗布した。四枚のパネルは全て華氏73±2度(摂氏23±3度)、相対湿度(RH)50±2%で放置して養生した。2日間の養生後、テーバー試験及び酸/アルカリ試験のために、パネルから4×4インチ(17×17mm)の試験片を切り取った。
各三枚の試料の試験結果を下記表3及び4に示す。
Claims (16)
- ハロゲン化ビニリデン由来の単量体単位とC1−C2アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第一共重合体であって、前記C1−C2アルキルアクリレート由来の単量体単位が、前記第一共重合体の5〜40重量%存在する少なくとも一つの第一共重合体と、ハロゲン化ビニリデン由来の単量体単位とC4−C5アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第二共重合体であって、前記C4−C5アルキルアクリレート由来の単量体単位が、前記第二共重合体の3〜40重量%存在する少なくとも一つの第二共重合体との水性混合物からなり、前記第一共重合体と前記第二共重合体とは重量比で90:10〜10:90であり、第一及び第二共重合体合わせて前記水性混合物の10〜50重量%をなし、前記水性混合物のpHが1.5〜3.5である、水性混合物からなる組成物。
- 前記第一共重合体は、C1−C2アルキルアクリレート由来の単量体単位を5〜15重量%含み、前記第二共重合体は、C4−C5アルキルアクリレート由来の単量体単位を3〜10重量%含む、請求項1に記載の組成物。
- 前記第一共重合体は、メチルアクリレート及び塩化ビニリデンの単量体単位を含む第一共重合体を含み、前記第二共重合体は、ブチルアクリレート及び塩化ビニリデンの単量体単位を含む、請求項1又は2に記載の組成物。
- 前記第一共重合体と前記第二共重合体とは重量比で90:10〜60:40であり、第一及び第二共重合体合わせて前記水性混合物の10〜30重量%をなす、請求項1又は2に記載の組成物。
- 前記第一共重合体と前記第二共重合体とは重量比で50:50〜10:90であり、第一及び第二共重合体合わせて前記水性混合物の25〜50重量%をなす、請求項1又は2に記載の組成物。
- 前記第一共重合体と前記第二共重合体とは重量比で30:70〜35:65である、請求項5に記載の組成物。
- コンクリート構造体表面からの水蒸気放出を抑制し、該コンクリート表面とそこに設けた被膜との間の界面付着性を強化する方法であって、該方法は、ハロゲン化ビニリデン由来の単量体単位とC1−C2アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第一共重合体であって、前記C1−C2アルキルアクリレート由来の単量体単位が、前記第一共重合体の5〜40重量%存在する少なくとも一つの第一共重合体と、ハロゲン化ビニリデン由来の単量体単位とC4−C5アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第二共重合体であって、前記C4−C5アルキルアクリレート由来の単量体単位が、前記第二共重合体の3〜40重量%存在する少なくとも一つの第二共重合体との水性混合物であって、前記第一共重合体と前記第二共重合体とは重量比で90:10〜10:90であり、第一及び第二共重合体合わせて前記水性混合物の10〜50重量%をなし、前記水性混合物のpHが1.5〜3.5である水性混合物をコンクリート表面に施す工程を含み、前記水性混合物は前記表面に実質的に均等に施され、コンクリート構造体の自由表面14m2当たり共重合体混合物0.4〜4kgを含有するコーティングを設ける、コンクリート構造体表面から水蒸気放出を抑制し、該コンクリート表面とそこに設けた被膜との間の界面付着性を強化する方法。
- 前記前記第一共重合体は、C1−C2アルキルアクリレート由来の単量体単位を5〜15重量%含み、前記第二共重合体は、C4−C5アルキルアクリレート由来の単量体単位を3〜10重量%含む、請求項7に記載の方法。
- 前記第一共重合体は、メチルアクリレートと塩化ビニリデンとの共重合体を含み、前記第二共重合体は、ブチルアクリレートと塩化ビニリデンとの共重合体を含む、請求項7又は8に記載の方法。
- 前記第一共重合体と前記第二共重合体とは重量比で90:10〜60:40であり、第一及び第二共重合体合わせて前記水性混合物の10〜30重量%をなし、前記水性混合物は前記表面に実質的に均等に施され、コンクリート構造体の自由表面14m2当たり共重合体混合物0.4〜2.3kgを設ける、請求項7又は8に記載の方法。
- 前記水性混合物は、複数回に分けて施される、請求項10に記載の方法。
- 前記第一共重合体と前記第二共重合体とは重量比で50:50〜10:90であり、第一及び第二共重合体合わせて前記水性混合物の25〜50重量%をなし、前記水性混合物は前記表面に実質的に均等に施され、コンクリート構造体の自由表面14m2当たり共重合体混合物1.8〜4kgを設ける、請求項7又は8に記載の方法。
- 前記第一共重合体と前記第二共重合体とは重量比で30:70〜35:65であり、前記水性混合物は一回で施される、請求項12に記載の方法。
- 未養生若しくは養生不完全なコンクリート構造体からの水分損失を抑制する方法であって、該方法は、ハロゲン化ビニリデン由来の単量体単位とC1−C2アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第一共重合体であって、前記C1−C2アルキルアクリレート由来の単量体単位が、前記第一共重合体の5〜40重量%存在する少なくとも一つの第一共重合体と、ハロゲン化ビニリデン由来の単量体単位とC4−C5アルキルアクリレート由来の単量体単位とを含む少なくとも一つの第二共重合体であって、前記C4−C5アルキルアクリレート由来の単量体単位が、前記第二共重合体の3〜40重量%存在する少なくとも一つの第二共重合体との水性混合物であって、前記第一共重合体と前記第二共重合体とは重量比で90:10〜10:90であり、第一及び第二共重合体合わせて前記水性混合物の10〜50重量%をなし、前記水性混合物のpHが1.5〜3.5である水性混合物をコンクリート表面に施す工程を含み、前記水性混合物は前記表面に実質的に均等に施され、コンクリート構造体の自由表面14m2当たり共重合体混合物0.4〜4kgを含有するコーティングを設ける、未養生若しくは養生不完全なコンクリート構造体からの水分損失を抑制する方法。
- 前記第一共重合体と前記第二共重合体とは重量比で50:50〜10:90である、請求項14に記載の方法。
- 前記第一共重合体と前記第二共重合体とは重量比で35:65〜10:90であり、前記第一共重合体は、メチルアクリレート及び塩化ビニリデン由来の単量体単位を含み、前記第二共重合体は、ブチルアクリレート及び塩化ビニリデン由来の単量体単位を含む、請求項14に記載の方法。
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JPH06116531A (ja) * | 1992-10-06 | 1994-04-26 | Dainichi Kasei Kk | 水系塗膜防水材用フッ素系重合体含有水系上塗り塗料 |
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JP2001011363A (ja) * | 1999-06-29 | 2001-01-16 | Asahi Chem Ind Co Ltd | 建築用ボード防湿用ラテックス |
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PL1802684T3 (pl) * | 2004-10-12 | 2013-06-28 | Dow Global Technologies Llc | Zmiękczacz w polimerze akrylan alkilu-chlorek winylu |
CN101186666A (zh) * | 2007-11-19 | 2008-05-28 | 上海氯碱化工股份有限公司 | 制备聚偏二氯乙烯与丙烯酸酯类共聚胶乳的方法 |
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AU2012251125B2 (en) | 2016-03-10 |
CN103502003B (zh) | 2016-03-09 |
BR112013028265B1 (pt) | 2021-06-08 |
MX336849B (es) | 2016-02-03 |
CN105884957A (zh) | 2016-08-24 |
JP2014519530A (ja) | 2014-08-14 |
EP2704905B1 (en) | 2018-12-26 |
ES2714300T3 (es) | 2019-05-28 |
WO2012150967A1 (en) | 2012-11-08 |
CA2833603C (en) | 2019-08-27 |
US20140044879A1 (en) | 2014-02-13 |
MX2013012772A (es) | 2014-03-27 |
BR112013028265A2 (pt) | 2017-06-27 |
IL228975A0 (en) | 2013-12-31 |
SG194650A1 (en) | 2013-12-30 |
US8940371B2 (en) | 2015-01-27 |
AU2012251125A8 (en) | 2013-12-12 |
NZ616835A (en) | 2015-09-25 |
CZ2013954A3 (cs) | 2014-04-09 |
ZA201308195B (en) | 2014-08-27 |
CL2013003158A1 (es) | 2014-07-11 |
IL228975A (en) | 2017-02-28 |
CZ308662B6 (cs) | 2021-02-03 |
US20150232684A1 (en) | 2015-08-20 |
US9574102B2 (en) | 2017-02-21 |
CA2833603A1 (en) | 2012-11-08 |
CN103502003A (zh) | 2014-01-08 |
GEP201606520B (en) | 2016-08-10 |
EP2704905A4 (en) | 2014-10-01 |
EP2704905A1 (en) | 2014-03-12 |
CN105884957B (zh) | 2019-06-11 |
AU2012251125A1 (en) | 2013-11-07 |
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