JP3992163B2 - Curing agent molded body and anchor bolt fixing composition using the same - Google Patents

Curing agent molded body and anchor bolt fixing composition using the same Download PDF

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JP3992163B2
JP3992163B2 JP15385097A JP15385097A JP3992163B2 JP 3992163 B2 JP3992163 B2 JP 3992163B2 JP 15385097 A JP15385097 A JP 15385097A JP 15385097 A JP15385097 A JP 15385097A JP 3992163 B2 JP3992163 B2 JP 3992163B2
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curing agent
molded body
curing
resin
agent
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JPH111529A (en
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昌之 米谷
信広 武田
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Asahi Kasei Chemicals Corp
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Asahi Kasei Chemicals Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、ラジカル硬化性樹脂を硬化させるために用いる硬化剤成形体及びそれを用いたアンカーボルト用固着剤に関する。
【0002】
【従来の技術】
従来、ラジカル硬化性樹脂である不飽和ポリエステル樹脂、エポキシアクリレート樹脂、ポリエステルアクリレート樹脂等の重合開始剤には、有機過酸化物を主成分とする硬化剤が用いられている。これらの有機過酸化物は、使用目的、使用温度によって区分されて用いられており、低温、常温域においては、しばしば芳香族アミン類等の硬化促進剤と併用されている。
【0003】
有機過酸化物を硬化剤とするラジカル硬化性樹脂の用途は、耐食ライニング、金型成形、樹脂カプセルアンカー用の主剤等多岐に渡っている。樹脂カプセルアンカー用樹脂としては、不飽和ポリエステル樹脂、エポキシアクリレート樹脂が一般的である。
【0004】
樹脂カプセルアンカーは、アンカーボルトをコンクリート構造物や岩盤等に埋め込み設備等を設置する用途に用いられており、硬化可能な粘性液体樹脂と硬化剤の二成分又は骨材を加えた三成分を有し、アンカーボルトや鉄筋をハンマーで打ち込むタイプとハンマードリル等で回転・打撃を与えながら埋め込むタイプのものがある。
【0005】
アンカーボルトや鉄筋をハンマードリル等で回転・打撃を与えながら埋め込むタイプの樹脂カプセルアンカーには、破砕可能な筒状容器内に硬化可能な主剤、骨材及び内容器に封入された硬化剤を配した二重容器構造の樹脂カプセルアンカーが一般的である(特公昭62−37076号公報)。又、破砕可能な外容器と破砕可能な内容器とからなりその一方に粘性液体樹脂、他方に該粘性液体樹脂の硬化剤と骨材を充填してなるボルト固着用カートリッジにおいて、固体顆粒状の硬化剤と骨材が実質的に均一に混合されていることを特徴とするボルト固着用カートリッジ(特公平4−1160号公報)や粘性液体樹脂と粘性液体樹脂に混入される粒状骨材と、有機結合剤と希釈剤と過酸化物とが棒状に成形され、かつ該棒状成形物の全表面にわたって樹脂被覆層を有してなる硬化剤とを不透明な円筒状の管の中に充填し、不透明な円筒状の管の口元部に透明なプラスチックキャップを密嵌してなるボルト固定用固着剤が知られている(特公昭63−13000号公報)。
【0006】
【発明が解決しようとする課題】
ラジカル硬化型樹脂の硬化剤は液状、無機物或いは有機物で希釈した粉状、顆粒状のものが一般的である。これらの液状、粉状、顆粒状の硬化剤は、ラジカル硬化型樹脂と混合して金型や孔に流し込む用途においては、硬化剤が樹脂と短時間で均一に混合される。しかしながら、例えばこれらの硬化剤をアンカーボルト用固着剤として、一般的によく知られている二重容器構造の樹脂カプセルアンカーに用いた場合、硬化剤が細い内容器に充填されるため、硬化剤が充填しにくく作業性が非常に悪くなる欠点や容器内への充填時に硬化剤の微粉が飛散し作業環境が悪化したり、充填ホッパーや容器内での硬化剤のブリッジが発生し作業性が悪化するといった問題がある。
【0007】
特公昭63−13000号公報のボルト固定用固着剤は、上記の如き問題点を解決したものである。しかしながら、このボルト固定用固着剤は、硬化剤の成形体が棒状であるがため、カプセル製造時に粒状骨材と混合充填できず、棒状の硬化剤を装填したのち粒状骨材を充填しなければならないといった製造性の無駄や充填する粒状骨材が円筒状の管と棒状硬化剤の間隙でブリッジを起こし粒状骨材の沈降が悪くなるといった欠点が発生する。又、棒状硬化剤は、アンカーボルト埋め込み時にハンマードリルの回転、打撃でしばしば折れてしまい粘性液体樹脂との混合にムラが発生して、固着性能が大きくバラツキ、安定した高い固着性能が発揮できない問題も発生する。
【0008】
また仮に硬化剤だけを粒状に成形したとしても粒状の硬化剤と粒状の骨材を粘性液体樹脂に分散させる場合、製造時や製品の輸送時に硬化剤と骨材が分離し、硬化剤と粘性液体樹脂との混合にムラが発生する問題は生じる。更には製造時の硬化剤投入時にブリッジを起こし硬化剤投入量の不足が生じる。硬化剤は組成物全体に占める重量が少ないため、硬化剤だけがないまたは不足することを検知することは困難である。そのため施工時の硬化不良による固着性能が不足したりばらつくという問題も発生する。これらの問題を解決するため、骨材と硬化剤の粒径や製造方法に制限、工夫が必要となる。
【0009】
また、骨材として多くの場合、突起部の多い天然骨材が用いられるが、アンカーボルト固着剤組成物を収容する容器として合成樹脂フィルム等の薄い材料を用いた場合、骨材の突起部で容器を破り粘性液体樹脂が漏れる問題が発生するため、フィルムの厚みや材質に制限があった。
【0010】
本発明は、製品寿命が長く、取扱性、製造性に優れ、ラジカル硬化性樹脂を硬化させる硬化剤成形体及び高い固着性能を発揮し、硬化剤の不足やその未充填という問題もなく(仮にあってもそのことを検知しやすく品質管理が容易で)信頼性の高いアンカーボルト用固着剤組成物を提供することを目的とする。
【0011】
【課題を解決するための手段】
ラジカル硬化性樹脂を硬化させる硬化剤成形体において、硬化剤と骨材を一体とした成形体とすることで均一分散が可能となり、硬化剤とラジカル硬化性樹脂の混合性が良好となり、また硬化剤だけがないあるいは不足するという製品の品質管理上の問題も解決した。更に硬化剤成形体の表面被覆層を硬化剤と硬化反応するラジカル硬化型樹脂で形成させることで製造性に優れ且つ製品寿命が長くなり、固着強度のばらつきも小さいことを見いだし、本発明をなすに至った。
【0012】
すなわち、本発明は、
1.ラジカル硬化型樹脂及び硬化促進剤を含む主剤からなる粘性液体と、硬化促進剤を含むラジカル硬化性樹脂を硬化させる硬化剤と骨材からなる硬化剤成形体を混合し、該硬化剤成形体の表面近傍の前記ラジカル硬化型樹脂を該硬化剤成形体に含まれる硬化剤の作用によって硬化させて、該硬化剤成形体の硬化剤表面にラジカル硬化型樹脂からなる被覆層を形成させた表面被覆層を有する硬化剤成形体を主剤中に分散させてなる固着用組成物、
2.ラジカル硬化型樹脂及び硬化促進剤を含む主剤からなる粘性液体と、硬化促進剤を含むラジカル硬化性樹脂を硬化させる硬化剤と骨材からなる硬化剤成形体を混合し、該硬化剤成形体の表面近傍の前記ラジカル硬化型樹脂を該硬化剤成形体に含まれる硬化剤の作用によって硬化させて、該硬化剤成形体の硬化剤表面にラジカル硬化型樹脂からなる被覆層を形成させた表面被覆層を有する硬化剤成形体を主剤中に分散させてなる固着用組成物を破砕可能な容器に収容してなることを特徴とする樹脂カプセルアンカーである。
【0013】
本発明に使用される硬化剤成形体は、硬化剤と骨材とからなり、その硬化剤の表面に硬化したラジカル硬化型樹脂からなる被覆層を有するものである。その形状は、粒状、棒状、その他どのような形状でも良いが、製造性の点から粒状が好ましく、その粒径はアンカーボルト固着剤組成物として破砕可能な容器に収容すること、施工時のボルト孔壁間での破砕性等から1.0mm以上30mm以下であることが好ましく、2.0mm以上15mm以下が更に好ましい。
【0014】
また、本発明の硬化剤成形体の構成は、その表面に硬化したラジカル硬化性樹脂からなる被覆層を形成することが重要であり、すなわち、その表面に該被覆層を持てばよく、骨材と硬化剤の一体化の構成は特に問わない。例えば、骨材の表面の全体に硬化剤が付着したものだけでなく、骨材の表面の凹部など表面の一部に硬化剤が付着または充填したものでもよい。また、硬化剤の塊の表面に骨材が張り付いた構造のもの、硬化剤の塊の内部に複数個の骨材が埋まった構造のもの、などどのような構成でも良い。しかし、本発明においては、図1に模式的に示すように、骨材の表面の全体または凹部など骨材の表面の一部に硬化剤が付着した構成が、施工時の硬化剤の分散性、製造性、骨材と硬化剤の比率等の点から好ましい。突起を有する骨材を合成樹脂フィルム等の厚みの薄い材料の容器に収容した場合、容器を破り中身の樹脂が漏れ出る恐れがあるが、突起部の表面に硬化剤を付着させることにより突起部をなくせばこのような問題を生じない点からも好ましい。
【0015】
本発明に用いる骨材は、粒度の比較的大きい場合にはアンカーボルト施工時の回転、打撃等で破砕可能なものであればよく、一般的にはマグネシアクリンカー又はガラス、セラミック等の人工骨材や、硅石、石英等の天然石といった無機物質が使用されているが、硬質塩化ビニルのような硬質プラスチックといった有機物質でもよい。骨材の形状としては分散性、硬化剤との混合充填性等を考慮すると粒状のものが好ましい。又、骨材の粒径は、施工条件(穿孔径、アンカーボルトのサイズ等)により決定すればよいが、0.3mm以上30.0mm以下が好ましい。先に示した骨材の全体又は一部に硬化剤が付着した構造では0.5mm以上30mm以下が好ましく、0.8mm以上15mm以下が更に好ましい。
【0016】
骨材は、主剤に対し、たとえば10〜500重量%好ましくは50〜300重量%で使用することができる。
【0017】
本発明で言う硬化剤とは、キュメンパーオキサイド等のハイドロオキサイド類、ジクミルパーオキサイド等のジアルキルパーオキサイド類、過酸化ベンゾイル等のジアシルパーオキサイド類、メチルエチルケトンパーオキサイド等のケトンパーオキサイド類、ビス−(4−t−ブチルシクロヘキシル)パーオキシカーボネート等のオキシカーボネート類、1,1−ジ−t−ブチルパーオキシシクロヘキサノン等のパーオキシケタール類、t−ブチルパーオキシベンゾエート等のパーオキシエステル類等の有機過酸化物及び、これらの有機過酸化物をフタル酸ジシクロヘキシル等の有機物や、炭酸カルシウム、硫酸カルシウム等の無機物で希釈したものも含まれる。必要に応じて成形剤や界面活性剤等他の成分を添加しても良い。
【0018】
本発明の硬化剤は安全性を考慮すると、希釈剤で50%以下に希釈されたものが好ましく、常温硬化性や安全性を考慮すると有機過酸化物として過酸化ベンゾイルを希釈剤で希釈したものが好ましい。
【0019】
固着剤組成物として必要な硬化剤の量は、主剤樹脂を硬化させる事が出来れば特に制限されない。一般には2〜15重量%である。骨材と硬化剤の比率は、必要とする硬化剤量、後で形成される被覆層の厚み、固着剤組成物として使用する際の骨材の量等によって任意に設定できるが。硬化剤の付着の製造性、安定性等を考慮すると骨材/硬化剤比は体積比で20〜1500%が好ましく、更に好ましくは30〜800%である。
【0020】
被膜層を形成するラジカル硬化型樹脂としては特に限定されない。一般にエポキシアクリレート樹脂、ポリエステルアクリレート樹脂、アクリルウレタン樹脂、不飽和ポリエステル樹脂等に硬化促進剤を混合したものが用いられる。
【0021】
前記硬化剤成形体の成形方法については特に限定はされないが、例えば、1)湿状にした硬化剤を骨材の表面に塗布または噴霧し、乾燥する方法、2)粉状の硬化剤と骨材をまぜ、機械的な圧力を加えて成形する方法、3)粉状の硬化剤を水、成形剤で粘土状にし骨材に付着させた後乾燥する方法、4)成形剤と混合した硬化剤粉の上に骨材を転がし、硬化剤を付着させた後乾燥する方法、等がある。
【0022】
成形剤としては、カルボキシメチルセルロース、メチルセルロース、グアーガム、ローカストビーンガム、ゼラチン、PVA(ポリビニルアルコール)、アラビアゴム、微結晶性セルロース、アミロース、アミロペクチンのデンプン類等が使用されるが、製造性、保形性の観点からカルボキシメチルセルロース、グアーガム、ローカストビーンガムのセルロース誘導体を使用することが好ましく、更に好ましくは、粒状成形体が硬くなり、取扱性に優れるアミロース、アミロペクチンのデンプン類である。成形剤/硬化剤の比は、例えば0〜20重量%、好ましくは1〜15重量%である。
【0023】
このようにして得られた粒状成形体の表面にラジカル硬化型樹脂からなる被覆層を形成する方法としては、1)硬化剤と硬化反応する硬化促進剤を含むラジカル硬化型樹脂に浸漬させる等の工程により表面をコーティングし、その時の硬化反応により被覆層を形成させる方法、2)成形体をラジカル硬化型樹脂及び硬化促進剤を含む主剤に入れ、その際の硬化反応により表面に樹脂被覆層を形成させる方法があるが、アンカーボルト用固着剤組成物として使用する場合、製造工程の簡素化、コスト等を考慮すると、2)の成形体を主剤に入れ、その際の硬化反応により表面に樹脂被覆層を形成させる方法がより好ましい。
【0024】
被覆層の厚みについては、硬化剤の活性部分を十分に保持できるのであれば薄いほど良いが、硬化剤の活性部分を保持するために硬化剤の厚み未満でなければならない。好ましくは0.2〜0.8mmである。
【0025】
なお、被覆層は、主にラジカル硬化型樹脂が硬化したものからなるが、その中には未反応の硬化剤や成形剤等が含まれていてもよい。
【0026】
硬化剤成形体の硬さについては、アンカーボルト固着剤としての施工時の機械攪拌で破砕可能であれば特に問題ないが、アンカーボルト固着剤組成物として主剤中に分散させる時の取扱い時における硬化性成形体の崩壊を防がなければならないことを考慮すると圧壊強度100gf/cm2以上が好ましいが、更に丈夫な被膜を形成して製品寿命をより長くするときには1kgf/cm2以上となることもある。
【0027】
本発明のアンカーボルト固着剤に使用されるラジカル硬化型樹脂は、エポキシアクリレート樹脂、ポリエステルアクリレート樹脂、アクリルウレタン樹脂、不飽和ポリエステル樹脂等である。又、ラジカル硬化型樹脂の中でも固着性能、低温硬化性、耐アルカリ性に優れるエポキシアクリレート樹脂、ポリエステルアクリレート樹脂を主成分として用いることがより好ましい。
【0028】
これらのラジカル硬化型樹脂には反応性単量体を混合して使用することができる。反応性単量体には、スチレンモノマー、メタクリル酸メチル、メタクリル酸エチル、エチレングリコールジメタアクリレート、シクロヘキシルフタレート、n−ブチルメタクリレート、2−ヒドロキシエチルメタクリレート、ベンジルメタクリレート、フェノキシエチルメタクリレート、ジエチレングリコールジメタアクリレート、トリエチレングリコールジメタアクリレート、1,4ブチレングリコールジメタアクリレート、トリメタアクリル酸トリメチロールプロパン、マレイン酸ジメチル、イソボルニルメタクリレート、ブタンジオールジメタクリレート、2−ヒドロキシエチルメタクリレート、2,2−ビス[4・(メタクリロキシ・ジエトキシ)]フェニルプロパン等がある。これらの反応性単量体は、ラジカル硬化型樹脂に対して0〜100重量%、好ましくは1〜60重量%で使用することができる。
【0029】
本発明に使用される硬化促進剤は、N,N−ジメチルアニリン、N,N−ジエチルアニリン、N,N−ジメチル−P−トルイジン、N,N−ジヒドロキシプロピル−P−トルイジン、N,N−ジヒドロキシエチル−P−トルイジン等の芳香族アニリン類、ナフテン酸コバルト等の金属石鹸類、バナジルアセチルアセトネート等のキレート化合物等がある。これらの硬化促進剤はラジカル硬化型樹脂に対しては例えば、0.2〜3重量%である。
【0030】
本発明の主剤の硬化時間は、固着剤の施工性と固着強度によって決まる。主剤の硬化時間が短いとアンカーボルト埋め込み中に樹脂が硬化して埋め込みができなくなり、又、逆に硬化時間が長いと低温施工時に樹脂が未硬化となり固着強度が発揮できなかったり、硬化性成形体を直接主剤中に投入することにより主剤により被覆層を形成させる場合、反応性単量体が硬化剤の被覆層を透過することにより反応性単量体と硬化剤成分が反応してしまい、硬化剤成分が失われ製品寿命が短くなる。このため、主剤の硬化時間を、硬化促進剤の添加量を調整して、JIS−K6901(常温硬化特性)の25℃で測定される最小硬化時間が60分以下にすると低温施工時に樹脂の未硬化がなくなるので好ましい。更に、固着強度を十分発揮させるには、2分以上45分以下がより好ましい。
【0031】
ラジカル硬化型樹脂及び硬化促進剤を含む主剤には、必要に応じて重合禁止剤、顔料、紫外線吸収剤、界面活性剤、増粘剤、充填剤、チクソトロピー化剤(微分シリカ等)、着色剤等を添加することができる。
【0032】
本発明で得られた固着剤組成物は、アンカーボルトを施工しようとする穿孔内へ該固着剤組成物を充填する前又は後に硬化性成形体を破砕させればよい。破砕方法としては、充填前であればミキサーを使用する方法が挙げられ、充填後であればアンカーボルトの回転、打撃を利用する方法が挙げられる。
【0033】
上述のアンカーボルト固着剤組成物は、そのまま穿孔内に流し込み前述のような機械攪拌を加えることにより施工してもよいが、破砕可能な容器に収容することにより、硬化剤/樹脂比、骨材/樹脂比等が一定に保たれ、よりバラツキの少ない安定した高い固着力を発揮することができる。破砕可能な容器とは、アンカーボルト施工時の回転、打撃等で破砕又は引き裂きが可能なもので、ラジカル硬化型樹脂及び硬化促進剤又は反応性単量体の浸透を遮断し逸散を防ぐことができるものであれば特に限定されないが、通常はガラス、合成樹脂、合成樹脂フィルム類、紙類等の材料からなる筒状のものが用いられる。
【0034】
本発明のアンカーボルト固着剤組成物製造方法としては、ラジカル硬化型樹脂及び硬化促進剤を含む主剤からなる粘性液体と、硬化剤と骨材からなる硬化性成形体を混合し、該硬化性成形体の表面近傍の前記ラジカル硬化型樹脂を該硬化性成形体に含まれる硬化剤の作用によって硬化させて、該硬化性成形体各個の硬化剤表面にラジカル硬化型樹脂からなる被覆層を形成し、ラジカル硬化型樹脂及び硬化促進剤を含む主剤に、表面被覆層を有する硬化性成形体を分散させることからなる製造方法である。
【0035】
【発明の実施の形態】
以下、本発明の実施例により詳細に説明する。
【0036】
実施例1
骨材として粒径1.2mm〜3.4mm(平均粒径2.5mm)の珪石80gの表面に、硫酸カルシウムで40%の濃度に希釈された過酸化ベンゾイル100重量部、水25重量部、アミロペクチン10重量部からなる粘土状の硬化剤を塗布し、粒径2.0mm〜5.0mm(平均粒径3.5mm)の粒状に成形、乾燥した。このときの骨材/硬化剤の体積比は約60%である。これを、ビスフェノールA型エポキシ樹脂にメタクリル酸を付加したメタクリル型エポキシアクリレート樹脂65重量部、反応性単量体としてスチレンモノマー34重量部、硬化促進剤としてN,Nジメチルアニリン1重量部の割合で配合した樹脂(JIS−6901(常温硬化特性)の25℃で測定される最小硬化時間が約7分)の入ったビーカー(500cc、30℃)内へ浸漬し、スタラーにて30分攪拌し被覆層を形成させ、粒径2.1mm〜5.2mm(平均粒径3.7mm)の硬化性成形体100gを得た。このときの被膜層の膜厚は平均0.4mmであった。
【0037】
外径17.0mm肉厚0.7mm長さ120mmのガラス製容器内に前記粘性液状樹脂8.7g及び、前記硬化性成形体20gを充填し、開放部を閉止してカプセルを試作した。
【0038】
次にサイズ500×500×1000mm、圧縮強度210kg/cm2のコンクリートブロックに穿孔径19.0mm、穿孔長130mmの孔を穿孔し、ブロワーとナイロンブラシを用いて孔内清掃を行った後、上記のカプセルを該穿孔の中の挿入し、先端を45度にカットした外径16mmの全ネジボルトM16(材質SNB7)をハンマードリルに装着し、回転と打撃を与えながら、孔底まで埋め込み、1日の養生時間を置き固着強度を測定した。測定機器はアンカーボルト用引っ張り試験機ANSER−5−III(旭化成工業株式会社製)を用いて行った。硬化性成形体の生産性、硬化性成形体の取扱性、固着強度の結果を表1に示す。
【0039】
実施例2
骨材として粒径1.5mm〜3.0mm(平均粒径2.6mm)のマグネシアクリンカー130gを、硫酸カルシウムで40%の濃度に希釈された過酸化ベンゾイル100重量部、メチルセルロース0.1重量部、SBラテックス(固形分50%)4重量部からなるスラリー中に投入し、互いに付着しないようにしながら乾燥し、粒径2.0〜5.0mm(平均粒径3.6mm)の粒状に成形した。このときの骨材/硬化剤体積比は約60%であった。これを実施例1と同様に被覆層を形成し145gの硬化剤成形体とした。この被覆層の厚みは平均0.4mmであった。次に、この硬化性成形体を26g使用した以外は実施例2と同様の試験を行った。その時の結果を表1に示す。
【0040】
実施例3
実施例1と同じ粘性液体樹脂100gを300ccのポリエチレン製の容器に入れ、次に、この容器に実施例1と同じ硬化剤成形体を245g混合充填した。
【0041】
混合充填された固着剤を実施例1と同様の穿孔内に25cc充填し先端を45度にカットした外径16mmの全ネジボルトM16(材質SNB7)をハンマードリルに装着し、回転と打撃を与えながら、孔底まで埋め込んだ。その時の結果を結果を表1に示した。
【0042】
実施例4
粘性液体樹脂として、ビスフェノールA型エポキシ樹脂にメタクリル酸を付加したメタクリル型エポキシアクルレート樹脂55wt%、反応性単量体としてジエチレングリコールジメタクリレート45wt%、硬化促進剤としてN,N−ジヒドロキシプロピル−p−トルイジン1wt%の割合で配合した樹脂(JIS−6901(常温硬化特性)の25℃で測定される最小硬化時間が約13分)を用い、硬化剤成形体を予め粘性液体樹脂に投入し被覆層を形成することなく直接ガラス管内に投入した以外は、実施例1と同様の試験を行った。このときの被覆層の厚みは平均0.5mmであった。その時の結果を表1に示す。
【0043】
実施例5
破砕可能な容器として、肉厚100μ、長さ120mmのポリエチレン/ポリエステル/アルミ/ポリエチレンの4層構造からなるフィルムの側面及び底部をヒートシールし外径17.0mmの筒状にしたものに充填した以外は実施例1と同様の試験を行った。その時の結果を表1に示す。
【0044】
実施例6
硬化剤として、硫酸カルシウムで40%の濃度に希釈された過酸化ベンゾイル3gと、骨材として粒径0.5mm〜1.0mmのマグネシアクリンカー8gを加圧成形し直径7.0mm、長さ11cmの棒状に成形した。このときの骨材/硬化剤の体積比は180%であった。硬化剤成形体としてこの棒状成型体を2本用いたこと以外は実施例1と同様の試験を行った。このときの被覆層の厚みは平均0.3mmであった。その時の結果を表1に示す。
【0045】
実施例7
骨材として粒径0.3mm〜0.5mmの珪石を用い被覆層形成後の硬化剤成形体の粒径が0.5mm〜0.8mmである以外は実施例1と同様の試験を行った。このときの被覆層の厚みは0.3mmであった。その結果を表1に示す。
【0046】
比較例1
外径17mm、肉厚0.8mm、長さ130mmのフェノール樹脂からなる不透明の円筒状の管に実施例1に用いた樹脂と同一の樹脂を8.7g充填した。次に硬化剤として、硫酸カルシウムで40%濃度に希釈された過酸化ベンゾイル1.8gを長さ85mm,直径5mmの棒状に成形し表面を第1の被覆層として酢酸繊維素の被覆層、第2の被覆層としてエポキシ樹脂の被覆層を施したものを挿入した。次に骨材として粒径1.5〜3.0mm(平均粒径2.4mm)のマグネシアクリンカー24gを充填し開放部をポリエチレン製のキャップで閉止してカプセルを試作した以外は実施例1と同様の試験を行った。その時の固着強度の結果を表1に示す。
【0047】
【表1】

Figure 0003992163
【0048】
以上、表1から分かるように、硬化剤と骨材とからなる成形体であって、その表面が硬化剤と硬化反応するラジカル硬化形樹脂で硬化剤表面に被覆層を形成させた硬化剤成形体は、その製造性、取扱性に優れ、ラジカル重合性樹脂の硬化剤としての性能を充分に発揮できるものである。
【0049】
【発明の効果】
以上、詳細に説明したように、本発明に係る硬化剤成形体は、骨材と一体化され、かつ硬化剤表面が硬化剤と硬化反応するラジカル硬化型樹脂で被覆層が形成されているため、その製造性、取扱性に優れ、硬化剤としての機能を充分に発揮できる信頼性のあるものを提供することができる。
【図面の簡単な説明】
【図1】実施例1〜5,7の硬化剤成形体の概略説明図である。
【図2】実施例1、2、4、7の樹脂カプセルアンカーの概略説明図である。
【図3】実施例5の樹脂カプセルアンカーの概略説明図である。
【図4】比較例1の樹脂カプセルアンカーの概略説明図である。
【符号の説明】
1 骨材
2 硬化剤
3 被覆層
4 容器
5 樹脂
6 硬化剤成形体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a curing agent molded body used for curing a radical curable resin and an anchor bolt fixing agent using the same.
[0002]
[Prior art]
Conventionally, as a polymerization initiator such as an unsaturated polyester resin, an epoxy acrylate resin, or a polyester acrylate resin, which is a radical curable resin, a curing agent mainly composed of an organic peroxide has been used. These organic peroxides are used by being classified according to the purpose of use and the temperature of use, and are often used in combination with a curing accelerator such as aromatic amines at low temperatures and normal temperatures.
[0003]
Applications of radical curable resins using an organic peroxide as a curing agent are diverse, such as corrosion resistant lining, mold molding, and main agents for resin capsule anchors. As the resin capsule anchor resin, unsaturated polyester resin and epoxy acrylate resin are generally used.
[0004]
Resin capsule anchors are used in applications where anchor bolts are embedded in concrete structures, bedrock, etc., and have three components with the addition of a curable viscous liquid resin and a curing agent, or an aggregate. In addition, there are a type in which anchor bolts and reinforcing bars are driven with a hammer and a type in which the bolts are embedded while being rotated and hit with a hammer drill or the like.
[0005]
The resin capsule anchor of the type that embeds anchor bolts and rebars while rotating and hitting them with a hammer drill or the like is provided with a main agent that can be hardened in a crushable cylindrical container, an aggregate, and a hardening agent enclosed in the inner container. A resin container anchor having a double container structure is generally used (Japanese Patent Publication No. 62-37076). Further, in a bolt fixing cartridge comprising a crushable outer container and a crushable inner container, one of which is filled with a viscous liquid resin and the other is filled with a curing agent and aggregate of the viscous liquid resin. A bolt fixing cartridge (Japanese Patent Publication No. 4160) and a granular aggregate mixed in the viscous liquid resin and the viscous liquid resin, wherein the hardener and the aggregate are mixed substantially uniformly, An organic binder, a diluent and a peroxide are molded into a rod shape, and a curing agent having a resin coating layer over the entire surface of the rod shaped product is filled into an opaque cylindrical tube, There is known a fixing agent for fixing bolts in which a transparent plastic cap is tightly fitted to the mouth of an opaque cylindrical tube (Japanese Patent Publication No. 63-13000).
[0006]
[Problems to be solved by the invention]
The curing agent for the radical curable resin is generally liquid, powdered or granular diluted with an inorganic or organic material. These liquid, powdery and granular curing agents are mixed with a radical curable resin and poured into a mold or a hole, and the curing agent is uniformly mixed with the resin in a short time. However, for example, when these hardeners are used as anchor bolt fixing agents for resin capsule anchors having a well-known double container structure, the hardener is filled in a thin inner container. However, it is difficult to fill, and the workability is very poor.When filling into the container, the hardener powder is scattered and the working environment is deteriorated. There is a problem of getting worse.
[0007]
The fixing agent for bolt fixing disclosed in Japanese Patent Publication No. 63-13000 solves the above-mentioned problems. However, this fixing agent for bolt fixing cannot be mixed and filled with granular aggregates at the time of capsule production because the molded body of the curing agent is rod-shaped, and it must be filled with the granular aggregate after loading the rod-shaped curing agent. There are disadvantages such as waste of manufacturability such as failure to occur, and the granular aggregate to be filled causes a bridge in the gap between the cylindrical tube and the rod-shaped hardener, resulting in poor sedimentation of the granular aggregate. In addition, the rod-shaped hardener often breaks when rotating or hitting with a hammer drill when embedding anchor bolts, resulting in uneven mixing with the viscous liquid resin, resulting in a large variation in fixing performance and the inability to exhibit stable and high fixing performance. Also occurs.
[0008]
Even if only the hardener is molded into a granular form, if the hardener and granular aggregate are dispersed in a viscous liquid resin, the hardener and the aggregate will be separated during manufacturing or product transportation, and the hardener and the viscosity will be separated. There arises a problem of unevenness in mixing with the liquid resin. Furthermore, a bridging occurs when the hardener is added during production, resulting in a shortage of the hardener input. Since the curing agent has a small weight in the entire composition, it is difficult to detect the absence or lack of only the curing agent. For this reason, there is a problem that the fixing performance is insufficient or varies due to poor curing during construction. In order to solve these problems, it is necessary to limit and devise the particle size and manufacturing method of the aggregate and the curing agent.
[0009]
In many cases, natural aggregate with many protrusions is used as the aggregate, but when a thin material such as a synthetic resin film is used as a container for storing the anchor bolt fixing agent composition, Since the problem that the viscous liquid resin leaks by breaking the container, the thickness and material of the film are limited.
[0010]
The present invention has a long product life, excellent handleability and manufacturability, exhibits a curing agent molded body that cures a radically curable resin, and high fixing performance, and there is no problem of insufficient or unfilled curing agent (provisionally It is an object of the present invention to provide an anchor bolt composition for anchor bolts that is easy to detect even if it is present and is easy to quality control).
[0011]
[Means for Solving the Problems]
In the curing agent molded body that cures the radical curable resin, it is possible to disperse uniformly by forming the molded body in which the curing agent and the aggregate are integrated, and the mixing property of the curing agent and the radical curable resin is improved and the curing is performed. The product quality control problem of lacking or lacking chemicals was also solved. Furthermore, it is found that the surface coating layer of the curing agent molded body is formed of a radical curable resin that cures and reacts with the curing agent, so that it is excellent in manufacturability, the product life is prolonged, and the variation in fixing strength is small. It came to.
[0012]
That is, the present invention
1. A viscous liquid composed of a main agent containing a radical curable resin and a curing accelerator, a curing agent that cures a radical curable resin containing a curing accelerator, and a curing agent molded body composed of aggregate are mixed, and the curing agent molded body Surface coating in which the radical curable resin in the vicinity of the surface is cured by the action of a curing agent contained in the curing agent molded body to form a coating layer made of a radical curable resin on the curing agent surface of the curing agent molded body A fixing composition comprising a hardener molded body having a layer dispersed in a main agent,
2. A viscous liquid composed of a main agent containing a radical curable resin and a curing accelerator, a curing agent that cures a radical curable resin containing a curing accelerator, and a curing agent molded body composed of aggregate are mixed, and the curing agent molded body Surface coating in which the radical curable resin in the vicinity of the surface is cured by the action of a curing agent contained in the curing agent molded body to form a coating layer made of a radical curable resin on the curing agent surface of the curing agent molded body A resin capsule anchor comprising a fixing composition obtained by dispersing a hardener molded body having a layer in a main ingredient in a container that can be crushed.
[0013]
The hardening | curing agent molded object used for this invention consists of a hardening | curing agent and an aggregate, and has a coating layer which consists of the radical curable resin hardened | cured on the surface of the hardening | curing agent. The shape may be granular, rod-shaped, or any other shape, but granular is preferable from the viewpoint of manufacturability, and the particle size is accommodated in a container that can be crushed as an anchor bolt fixing agent composition, and the bolt at the time of construction It is preferable that it is 1.0 mm or more and 30 mm or less from the crushability between hole walls, etc., and 2.0 mm or more and 15 mm or less are still more preferable.
[0014]
Further, in the constitution of the curing agent molded body of the present invention, it is important to form a coating layer made of a cured radical curable resin on its surface, that is, the coating layer only needs to be provided on its surface. There is no particular limitation on the integrated structure of the curing agent. For example, not only the surface of the aggregate with the hardening agent attached but also the surface of the aggregate such as the concave portion of the surface with the hardening agent attached or filled may be used. Further, any structure may be used, such as a structure in which an aggregate is attached to the surface of the hardener lump or a structure in which a plurality of aggregates are buried inside the hardener lump. However, in the present invention, as schematically shown in FIG. 1, the configuration in which the curing agent adheres to the entire surface of the aggregate or a part of the surface of the aggregate such as the concave portion has a dispersibility of the curing agent during construction. From the viewpoints of manufacturability, the ratio of aggregate and curing agent, and the like. If aggregates with protrusions are contained in a thin material container such as a synthetic resin film, the container may be broken and the resin in the contents may leak, but the protrusions can be formed by attaching a curing agent to the surface of the protrusions. It is also preferable from the point of not causing such a problem.
[0015]
The aggregate used in the present invention may be any aggregate that can be crushed by rotation, striking, etc. when anchor bolts are applied when the particle size is relatively large, and is generally an artificial aggregate such as magnesia clinker or glass or ceramic. In addition, inorganic materials such as natural stones such as meteorites and quartz are used, but organic materials such as hard plastics such as hard vinyl chloride may be used. The shape of the aggregate is preferably a granular shape in consideration of dispersibility, mixing and filling with a curing agent, and the like. In addition, the particle size of the aggregate may be determined according to the construction conditions (for example, the diameter of the drill holes and the size of the anchor bolt), but is preferably 0.3 mm or more and 30.0 mm or less. In the structure in which the hardener is attached to the whole or a part of the aggregate shown above, 0.5 mm to 30 mm is preferable, and 0.8 mm to 15 mm is more preferable.
[0016]
The aggregate can be used, for example, in an amount of 10 to 500% by weight, preferably 50 to 300% by weight, based on the main agent.
[0017]
Curing agents referred to in the present invention include hydroxides such as cumene peroxide, dialkyl peroxides such as dicumyl peroxide, diacyl peroxides such as benzoyl peroxide, ketone peroxides such as methyl ethyl ketone peroxide, bis -Oxycarbonates such as (4-t-butylcyclohexyl) peroxycarbonate, peroxyketals such as 1,1-di-t-butylperoxycyclohexanone, peroxyesters such as t-butylperoxybenzoate, etc. And those obtained by diluting these organic peroxides with organic substances such as dicyclohexyl phthalate and inorganic substances such as calcium carbonate and calcium sulfate. You may add other components, such as a shaping | molding agent and surfactant, as needed.
[0018]
In consideration of safety, the curing agent of the present invention is preferably diluted to 50% or less with a diluent. In consideration of room temperature curability and safety, benzoyl peroxide is diluted with a diluent as an organic peroxide. Is preferred.
[0019]
The amount of the curing agent necessary as the fixing agent composition is not particularly limited as long as the main resin can be cured. Generally, it is 2 to 15% by weight. The ratio between the aggregate and the curing agent can be arbitrarily set depending on the amount of the curing agent required, the thickness of the coating layer to be formed later, the amount of aggregate when used as the fixing agent composition, and the like. Considering manufacturability and stability of adhesion of the curing agent, the aggregate / curing agent ratio is preferably 20 to 1500% by volume, more preferably 30 to 800%.
[0020]
It does not specifically limit as radical curable resin which forms a film layer. In general, an epoxy acrylate resin, a polyester acrylate resin, an acrylic urethane resin, an unsaturated polyester resin or the like mixed with a curing accelerator is used.
[0021]
There is no particular limitation on the molding method of the curing agent molded body. For example, 1) a method of applying or spraying a moistened curing agent on the surface of the aggregate and drying, 2) a powdery curing agent and bone A method of molding by mixing mechanical materials and applying mechanical pressure, 3) A method of drying a powdery curing agent after making it clay with water and a molding agent, and adhering it to an aggregate. 4) Curing mixed with a molding agent. There is a method of rolling the aggregate on the powder and drying it after attaching the curing agent.
[0022]
As the molding agent, carboxymethylcellulose, methylcellulose, guar gum, locust bean gum, gelatin, PVA (polyvinyl alcohol), gum arabic, microcrystalline cellulose, amylose, amylopectin starch, etc. are used. From the viewpoint of properties, it is preferable to use cellulose derivatives of carboxymethyl cellulose, guar gum, and locust bean gum, and more preferable are starches of amylose and amylopectin which are hard in the granular molded body and excellent in handleability. The ratio of molding agent / curing agent is, for example, 0 to 20% by weight, preferably 1 to 15% by weight.
[0023]
As a method for forming a coating layer made of a radical curable resin on the surface of the granular molded body thus obtained, 1) immersion in a radical curable resin containing a curing accelerator that undergoes a curing reaction with a curing agent, etc. A method of coating a surface by a process and forming a coating layer by a curing reaction at that time. 2) A molded body is put in a main agent containing a radical curable resin and a curing accelerator, and a resin coating layer is formed on the surface by a curing reaction at that time. There is a method of forming, but when used as a fixing agent composition for anchor bolts, considering the simplification of the manufacturing process, cost, etc., the molded product of 2) is put into the main agent, and the resin is applied to the surface by the curing reaction at that time. A method of forming a coating layer is more preferable.
[0024]
The thickness of the coating layer is preferably as thin as it can sufficiently hold the active part of the curing agent, but must be less than the thickness of the curing agent in order to hold the active part of the curing agent. Preferably it is 0.2-0.8 mm.
[0025]
In addition, although a coating layer consists of what hardened | cured radical curing type resin mainly, the unreacted hardening | curing agent, molding agent, etc. may be contained in it.
[0026]
As for the hardness of the hardener molded body, there is no problem as long as it can be crushed by mechanical stirring at the time of construction as an anchor bolt fixing agent, but curing at the time of handling when dispersed in the main agent as an anchor bolt fixing agent composition. Considering that it is necessary to prevent the collapse of the molded product, a crushing strength of 100 gf / cm 2 or more is preferable. However, when a more durable coating is formed to extend the product life, it may be 1 kgf / cm 2 or more. is there.
[0027]
The radical curable resin used for the anchor bolt fixing agent of the present invention is an epoxy acrylate resin, a polyester acrylate resin, an acrylic urethane resin, an unsaturated polyester resin, or the like. Among radical curable resins, it is more preferable to use an epoxy acrylate resin or a polyester acrylate resin, which is excellent in fixing performance, low temperature curability, and alkali resistance, as a main component.
[0028]
These radical curable resins can be used by mixing with reactive monomers. Reactive monomers include styrene monomer, methyl methacrylate, ethyl methacrylate, ethylene glycol dimethacrylate, cyclohexyl phthalate, n-butyl methacrylate, 2-hydroxyethyl methacrylate, benzyl methacrylate, phenoxyethyl methacrylate, diethylene glycol dimethacrylate , Triethylene glycol dimethacrylate, 1,4 butylene glycol dimethacrylate, trimethylolpropane trimethacrylate, dimethyl maleate, isobornyl methacrylate, butanediol dimethacrylate, 2-hydroxyethyl methacrylate, 2,2-bis [4 · (methacryloxy · diethoxy)] phenylpropane and the like. These reactive monomers can be used in an amount of 0 to 100% by weight, preferably 1 to 60% by weight, based on the radical curable resin.
[0029]
The curing accelerator used in the present invention is N, N-dimethylaniline, N, N-diethylaniline, N, N-dimethyl-P-toluidine, N, N-dihydroxypropyl-P-toluidine, N, N- Examples include aromatic anilines such as dihydroxyethyl-P-toluidine, metal soaps such as cobalt naphthenate, and chelate compounds such as vanadyl acetylacetonate. These hardening accelerators are 0.2-3 weight% with respect to radical curable resin, for example.
[0030]
The curing time of the main agent of the present invention is determined by the workability and fixing strength of the fixing agent. If the curing time of the main agent is short, the resin will harden during anchor bolt embedding and cannot be embedded. Conversely, if the curing time is long, the resin will be uncured during low-temperature construction and the fixing strength may not be exhibited. When forming the coating layer with the main agent by directly injecting the body into the main agent, the reactive monomer and the curing agent component react by passing through the coating layer of the curing agent, The hardener component is lost and the product life is shortened. For this reason, if the minimum curing time measured at 25 ° C of JIS-K6901 (room temperature curing characteristics) is adjusted to 60 minutes or less by adjusting the addition amount of the curing accelerator, the curing time of the main agent is not increased during low temperature construction. This is preferable because there is no curing. Furthermore, in order to sufficiently exhibit the fixing strength, it is more preferably 2 minutes or longer and 45 minutes or shorter.
[0031]
Main ingredients including radical curable resins and curing accelerators include polymerization inhibitors, pigments, UV absorbers, surfactants, thickeners, fillers, thixotropic agents (differential silica, etc.) and colorants as necessary. Etc. can be added.
[0032]
The fixing composition obtained in the present invention may be obtained by crushing the curable molded product before or after filling the fixing bolt composition into the perforations to be anchored. Examples of the crushing method include a method using a mixer before filling, and a method using rotation and hitting of an anchor bolt after filling.
[0033]
The anchor bolt fixing agent composition described above may be applied as it is by pouring it into the perforation and adding mechanical stirring as described above. / The resin ratio and the like are kept constant, and a stable and high fixing force with less variation can be exhibited. Crushable containers are those that can be crushed or torn by rotation, hammering, etc., when anchor bolts are installed, blocking the penetration of radical curable resins and curing accelerators or reactive monomers to prevent dissipation. Although it will not specifically limit if it can be used, Usually, the cylindrical thing which consists of materials, such as glass, a synthetic resin, synthetic resin films, papers, is used.
[0034]
As the method for producing an anchor bolt fixing agent composition of the present invention, a viscous liquid composed of a main agent containing a radical curable resin and a curing accelerator is mixed with a curable molded body composed of a curing agent and an aggregate, and the curable molding is performed. The radical curable resin in the vicinity of the surface of the body is cured by the action of a curing agent contained in the curable molded body to form a coating layer made of a radical curable resin on the surface of each curing agent of the curable molded body. And a production method comprising dispersing a curable molded article having a surface coating layer in a main agent containing a radical curable resin and a curing accelerator.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the present invention will be described in detail below.
[0036]
Example 1
100 parts by weight of benzoyl peroxide diluted to a concentration of 40% with calcium sulfate, 25 parts by weight of water, on the surface of 80 g of silica stone having a particle diameter of 1.2 mm to 3.4 mm (average particle diameter of 2.5 mm) as an aggregate A clay-like curing agent composed of 10 parts by weight of amylopectin was applied, formed into particles having a particle size of 2.0 mm to 5.0 mm (average particle size of 3.5 mm), and dried. At this time, the volume ratio of the aggregate / hardening agent is about 60%. This was 65 parts by weight of methacrylic epoxy acrylate resin obtained by adding methacrylic acid to bisphenol A type epoxy resin, 34 parts by weight of styrene monomer as a reactive monomer, and 1 part by weight of N, N dimethylaniline as a curing accelerator. Immerse it in a beaker (500 cc, 30 ° C.) containing the blended resin (JIS-6901 (room temperature curing property), minimum curing time measured at 25 ° C. of about 7 minutes), stir with a stirrer for 30 minutes to coat A layer was formed to obtain 100 g of a curable molded body having a particle size of 2.1 mm to 5.2 mm (average particle size of 3.7 mm). The film thickness of the coating layer at this time was an average of 0.4 mm.
[0037]
A glass container having an outer diameter of 17.0 mm, a thickness of 0.7 mm, and a length of 120 mm was filled with 8.7 g of the viscous liquid resin and 20 g of the curable molded body, and the open portion was closed to produce a capsule.
[0038]
Next, after drilling holes with a drilling diameter of 19.0 mm and a drilling length of 130 mm in a concrete block of size 500 × 500 × 1000 mm and compressive strength of 210 kg / cm 2 , the inside of the hole was cleaned using a blower and a nylon brush. 1 mm of the outer diameter 16mm outer diameter screw bolt M16 (material SNB7) with the tip cut at 45 degrees is attached to the hammer drill, and it is embedded to the bottom of the hole while rotating and hitting. The fixing strength was measured by setting the curing time. The measuring instrument was an anchor bolt tensile tester ANSER-5-III (Asahi Kasei Kogyo Co., Ltd.). Table 1 shows the results of the productivity of the curable molded product, the handleability of the curable molded product, and the fixing strength.
[0039]
Example 2
100 parts by weight of benzoyl peroxide diluted with calcium sulfate to a concentration of 40%, 0.1 part by weight of methylcellulose, 130 g of magnesia clinker having a particle diameter of 1.5 mm to 3.0 mm (average particle diameter of 2.6 mm) as an aggregate , SB latex (50% solid content) is put into a slurry consisting of 4 parts by weight, dried while not sticking to each other, and molded into particles with a particle size of 2.0 to 5.0 mm (average particle size 3.6 mm) did. The aggregate / hardener volume ratio at this time was about 60%. A coating layer was formed in the same manner as in Example 1 to obtain a 145 g hardener molded body. The coating layer had an average thickness of 0.4 mm. Next, the same test as in Example 2 was performed except that 26 g of this curable molded body was used. The results at that time are shown in Table 1.
[0040]
Example 3
100 g of the same viscous liquid resin as in Example 1 was placed in a 300 cc polyethylene container, and then 245 g of the same curing agent molded body as in Example 1 was mixed and filled in this container.
[0041]
While fixing the mixed filling agent into the same drilling as in Example 1, 25 cc, and attaching a 16 mm outer diameter screw bolt M16 (material SNB7) whose tip is cut at 45 degrees to a hammer drill while rotating and hitting. It was embedded to the bottom of the hole. The results at that time are shown in Table 1.
[0042]
Example 4
As a viscous liquid resin, 55 wt% of methacrylic epoxy acrylate resin obtained by adding methacrylic acid to bisphenol A type epoxy resin, 45 wt% of diethylene glycol dimethacrylate as a reactive monomer, N, N-dihydroxypropyl-p- as a curing accelerator Using resin (JIS-6901 (room temperature curing property) minimum curing time measured at 25 ° C. of about 13 minutes) blended at a rate of 1 wt% toluidine, the curing agent molded body is put into a viscous liquid resin in advance. The same test as in Example 1 was performed except that the glass tube was directly put into the glass tube without forming. The thickness of the coating layer at this time was an average of 0.5 mm. The results at that time are shown in Table 1.
[0043]
Example 5
As a crushable container, the side and bottom of a 4-layer structure of polyethylene / polyester / aluminum / polyethylene having a thickness of 100 μm and a length of 120 mm were heat sealed and filled into a cylindrical shape having an outer diameter of 17.0 mm. Except for this, the same test as in Example 1 was performed. The results at that time are shown in Table 1.
[0044]
Example 6
As a curing agent, 3 g of benzoyl peroxide diluted to a concentration of 40% with calcium sulfate and 8 g of magnesia clinker having a particle size of 0.5 mm to 1.0 mm as an aggregate are pressure-molded and have a diameter of 7.0 mm and a length of 11 cm. It was formed into a rod shape. The volume ratio of the aggregate / hardening agent at this time was 180%. The same test as in Example 1 was performed except that two of these rod-shaped molded bodies were used as the curing agent molded body. The thickness of the coating layer at this time was an average of 0.3 mm. The results at that time are shown in Table 1.
[0045]
Example 7
The same test as in Example 1 was performed except that silica stone having a particle size of 0.3 mm to 0.5 mm was used as the aggregate and the particle size of the hardener molded body after the coating layer was formed was 0.5 mm to 0.8 mm. . The thickness of the coating layer at this time was 0.3 mm. The results are shown in Table 1.
[0046]
Comparative Example 1
An opaque cylindrical tube made of phenol resin having an outer diameter of 17 mm, a wall thickness of 0.8 mm, and a length of 130 mm was filled with 8.7 g of the same resin as that used in Example 1. Next, 1.8 g of benzoyl peroxide diluted with calcium sulfate to a concentration of 40% as a curing agent was formed into a rod shape having a length of 85 mm and a diameter of 5 mm, and the surface was used as a first coating layer. As the second coating layer, an epoxy resin coating layer was inserted. Next, Example 1 was used except that 24 g of magnesia clinker having a particle size of 1.5 to 3.0 mm (average particle size of 2.4 mm) was filled as an aggregate and the open part was closed with a polyethylene cap to produce a capsule. A similar test was conducted. The results of the fixing strength at that time are shown in Table 1.
[0047]
[Table 1]
Figure 0003992163
[0048]
As described above, as can be seen from Table 1, a molded product comprising a curing agent and an aggregate, the surface of which is a radical curing resin that undergoes a curing reaction with the curing agent, and a coating layer is formed on the surface of the curing agent. The body is excellent in manufacturability and handleability, and can sufficiently exhibit the performance as a curing agent for a radical polymerizable resin.
[0049]
【The invention's effect】
As described above in detail, the hardener molded body according to the present invention has a coating layer formed of a radical curable resin that is integrated with an aggregate and the hardener surface reacts with the hardener. Thus, it is possible to provide a reliable product that is excellent in manufacturability and handleability and that can sufficiently exhibit its function as a curing agent.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic explanatory diagram of curing agent molded bodies of Examples 1 to 5 and 7.
FIG. 2 is a schematic explanatory view of resin capsule anchors of Examples 1, 2, 4, and 7.
3 is a schematic explanatory diagram of a resin capsule anchor of Example 5. FIG.
4 is a schematic explanatory view of a resin capsule anchor of Comparative Example 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Aggregate 2 Hardener 3 Coating layer 4 Container 5 Resin 6 Hardener molding

Claims (2)

ラジカル硬化型樹脂及び硬化促進剤を含む主剤からなる粘性液体と、硬化促進剤を含むラジカル硬化性樹脂を硬化させる硬化剤と骨材からなる硬化剤成形体を混合し、該硬化剤成形体の表面近傍の前記ラジカル硬化型樹脂を該硬化剤成形体に含まれる硬化剤の作用によって硬化させて、該硬化剤成形体の硬化剤表面にラジカル硬化型樹脂からなる被覆層を形成させた表面被覆層を有する硬化剤成形体を主剤中に分散させてなるアンカーボルト固着用組成物。 A viscous liquid composed of a main agent containing a radical curable resin and a curing accelerator, a curing agent that cures a radical curable resin containing a curing accelerator, and a curing agent molded body composed of aggregate are mixed, and the curing agent molded body Surface coating in which the radical curable resin in the vicinity of the surface is cured by the action of a curing agent contained in the curing agent molded body to form a coating layer made of a radical curable resin on the curing agent surface of the curing agent molded body An anchor bolt fixing composition comprising a hardener molded body having a layer dispersed in a main agent . ラジカル硬化型樹脂及び硬化促進剤を含む主剤からなる粘性液体と、硬化促進剤を含むラジカル硬化性樹脂を硬化させる硬化剤と骨材からなる硬化剤成形体を混合し、該硬化剤成形体の表面近傍の前記ラジカル硬化型樹脂を該硬化剤成形体に含まれる硬化剤の作用によって硬化させて、該硬化剤成形体の硬化剤表面にラジカル硬化型樹脂からなる被覆層を形成させた表面被覆層を有する硬化剤成形体を主剤中に分散させてなる固着用組成物を破砕可能な容器に収容してなることを特徴とする樹脂カプセルアンカー。 A viscous liquid composed of a main agent containing a radical curable resin and a curing accelerator, a curing agent that cures a radical curable resin containing a curing accelerator, and a curing agent molded body composed of aggregate are mixed, and the curing agent molded body Surface coating in which the radical curable resin in the vicinity of the surface is cured by the action of a curing agent contained in the curing agent molded body to form a coating layer made of a radical curable resin on the curing agent surface of the curing agent molded body A resin capsule anchor comprising a fixing composition obtained by dispersing a hardener molded body having a layer in a main agent in a container that can be crushed.
JP15385097A 1997-06-11 1997-06-11 Curing agent molded body and anchor bolt fixing composition using the same Expired - Lifetime JP3992163B2 (en)

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