JP3871046B2 - Method for curing one-component composite curable resin composition - Google Patents

Method for curing one-component composite curable resin composition Download PDF

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JP3871046B2
JP3871046B2 JP2002295185A JP2002295185A JP3871046B2 JP 3871046 B2 JP3871046 B2 JP 3871046B2 JP 2002295185 A JP2002295185 A JP 2002295185A JP 2002295185 A JP2002295185 A JP 2002295185A JP 3871046 B2 JP3871046 B2 JP 3871046B2
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component
curing
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JP2004131529A (en
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佳英 荒井
学 井上
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Three Bond Co Ltd
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Three Bond Co Ltd
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Description

【0001】
【発明の属する技術分野】
光照射により容易に仮固定ができ、加熱により完全硬化し、保存性が良く、耐久性のある一液性複合硬化型樹脂組成物の硬化方法に関するものである。
【0002】
【従来の技術】
従来からエポキシ樹脂は各種分野で多数使用されている。エポキシ樹脂には二液性と一液性が知られており、二液性は混合作業が必要であるが常温硬化が可能であり、一液性は混合の手間が無いが加熱する必要があるというそれぞれの特徴を保有している。工業的には加熱工程があっても、速硬化が可能である一液性エポキシ樹脂が使用されることが多い。
【0003】
しかし、一液性エポキシ樹脂は加熱して硬化に至るまでの段階でエポキシ樹脂の粘度が低下し、エポキシ樹脂がたれてしまうという問題があった。また、エポキシ樹脂は硬化前は液状であるので未硬化の状態では被着体を保持することはできないため、通常、被着体を被着状態に保持する治具などを使用して固定する。加熱工程ではこの治具まで一緒に加熱炉に入れる必要があり、冶具による熱損失も問題視する必要があった。
【0004】
一方、(メタ)アクリロイル基を含有するオリゴマーに光開始剤を配合した光硬化性樹脂は紫外線などのエネルギー線を照射することにより、きわめて短時間で樹脂が硬化するというものである。しかし、光硬化性樹脂は光が当たらない部分や樹脂に厚みがある場合の深部は硬化しない。よって、影部が生じる様な箇所への接着には使用できない場合がある。
【0005】
一液性エポキシ樹脂と光硬化性樹脂の両硬化性を混合したものであれば、接着剤を塗布し被着体を保持したあと、光を照射すれば部分的にでも光硬化性樹脂が硬化し被着形状に保持することができる。そのあと、加熱により樹脂全体を硬化させて、接着強度を強固なものにすれば良い。
【発明が解決しようとする課題】
しかし、アクリル系樹脂の光硬化性樹脂とエポキシ系樹脂の混合は室温での保存性が悪く、また、光硬化性も遅いものであり、十分な接着力を有するものはなかった。その理由はエポキシ樹脂を一液加熱硬化させるための必須成分である潜在性硬化剤がアクリル系樹脂と相溶させるとアクリル系樹脂の影響で硬化剤成分が徐々に分解して溶出してしまい、エポキシ樹脂と溶出した硬化剤成分が反応してしまうからである。ジヒドラジドや変性脂肪族アミンを使用するとこの現象が発生し保存中に増粘、ゲル化してしまう。さらに、光硬化性も徐々に低下してしまう。
【0006】
アクリル系樹脂と混合したときにアクリル系樹脂に侵されにくい、エポキシ樹脂の硬化剤としてはジシアンジアミン酸無水物が揚げられるが、これは加熱硬化時に必要な硬化温度が高く工業的に適さない。
【0007】
本発明が解決すべきことは、上記の問題点を解決した室温での保存性が非常に良く、粘度変化が少なく作業性に優れ、紫外線、可光線などの光を照射することで、容易に固化し被着体を固定することができ、その後、加熱硬化することにより十分な接着力を有する一液性複合硬化型樹脂組成物の硬化方法を提供することである。
【0008】
【課題を解決するための手段】
すなわち、本発明は(a)1分子中に1つ以上のエポキシ基を有する化合物;100重量部、(b)2,4−ジアミノ−6−[2’−メチルイミダゾール−(1’)]−エチル−s−トリアジンイソシアヌル酸付加物;5〜20重量部、(c)一分子中に不飽和二重結合を有する化合物;25〜85重量部、(d)光照射によりラジカルを発生させる化合物;(c)成分100重量部に対し0.01〜10重量部、からなる一液性複合硬化型樹脂組成物を被着体に塗布し、光照射により被着体を固定し、次いで加熱することにより樹脂全体を硬化させることを特徴とする硬化方法である。
【0009】
以下、本発明を詳細に説明する。本発明の(a)成分は1分子中に1つ以上のエポキシ基を有するエポキシ樹脂であり、例えばビスフェノールAとエピクロルヒドリンから誘導されるジグリシジルエーテル、及びその誘導体、ビスフェノールFとエピクロルヒドリンから誘導されるジグリシジルエーテル、及びその誘導体等の所謂エピービス型液状エポキシ樹脂、多価アルコールとエピクロルヒドリンから誘導されるジグリシジルエーテル、多塩基酸とエピクロルヒドリンから誘導されるグリシジルエステル、及びその誘導体、水添ビスフェノールAとエピクロルヒドリンから誘導されるグリシジルエーテル、3,4−エポキシ−6−メチルシクロヘキシルメチル−3,4−エポキシ−6−メチルシクロヘキサンカルボキシレート、ビニルシクロヘキセンオキサイド、ビス(3,4−エポキシ−6−メチルシクロヘキシルメチル)アジペート等の脂肪族環状エポキシ、及びその誘導体、5,5’−ジメチルヒダントイン型エポキシ樹脂、トリグリシジルイソシアヌレート、イソブチレンから誘導される置換型エポキシなどがある。市販されている製品としては例えばジャパンエポキシレジン製のエピコート828、807、大日本インキ工業株式会社製のエピクロン830、835LV等が挙げられる。(a)成分は1種で用いても良いし2種以上を混合して使用しても良い。
【0010】
本発明で使用される(b)成分は、2,4−ジアミノ−6−2’−メチルイミダゾール−(1’)−エチル−s−トリアジンイソシアヌル酸付加物である。この化合物はいわゆるイミダゾール化合物であり加熱により(a)成分を硬化させる成分である。通常のイミダゾール化合物は後記する(c)成分と混合すると(a)成分を硬化させる成分が溶出してしまうが、本発明の化合物を使用するとそれがない。(b)成分の添加量は(a)成分100重量部に対し、5〜20重量部である。5重量部より少ないと加熱により充分硬化させることができない。また、20重量部より多いと経済的に不利である。
【0011】
本発明で使用される(c)一分子中に不飽和二重結合を有する化合物はラジカル重合可能な化合物である。不飽和二重結合はビニル基などエチレン性二重結合であれば特に限定されないが、好ましくは、(メタ)アクリロイルオキシ基であり、分子の末端または側鎖に該基を有する化合物が適当である。具体的な化合物としては、2−ヒドロキシエチル(メタ)アクリレート、2−ヒドロキシプロピル(メタ)アクリレート、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、ジシクロペンテニル(メタ)アクリレート、ジシクロペンテニルオキシメチル(メタ)アクリレート、(メタ)アクリル酸、シクロヘキシル(メタ)アクリレート、テトラヒドロフルフリル(メタ)アクリレート、2−エチルヘキシル(メタ)アクリレート、メトキシカルボニルメチル(メタ)アクリレート、エトキシカルボニルメチル(メタ)アクリレート、アシッドホスホオキシエチル(メタ)アクリレート、イソボロニル(メタ)アクリレート、水添ジシクロペンタジエニルジ(メタ)アクリレート、ジペンタエリスルトールペンタ(メタ)アクリレート、ジペンタエリスリトールヘキサアクリレート、ネオペンチルグリコールジ(メタ)アクリレート、フェニルオキシエチル(メタ)アクリレート等の(メタ)アクリロイルオキシ基を有する化合物が上げられ、また、これ以外の化合物としては、酢酸ビニル、メチルビニルエーテル、スチレン、ビニルトルエン等が上げられる。また、本発明の(A)ラジカル重合性ビニル化合物は、前記したビニル化合物の1種または2種以上を混合して用いることができる。
【0012】
さらに、前記以外の(A)成分としては、両末端に(メタ)アクリロイル基を有するポリウレタン、両末端に(メタ)アクリロイル基を有するビスフェノールA、両末端に(メタ)アクリロイル基を有するポリブタジエンなどの両末端に不飽和二重結合を有するオリゴマーを使用することができ、これらの化合物と前記の不飽和二重結合を有するモノマーとを併用することにより、接着剤組成物の硬化物の柔軟性や耐熱性等の特性を広範囲にわたって調整できる。
【0013】
(c)成分は(a)成分100重量部に対して25〜85重量部である。25重量部より少ないと光照射による固化度合いが低くなり、85重量部より多いと接着強度が低くなり、耐久性が落ち、接着剤としての機能が低くなる。
【0014】
本発明で使用される(d)成分は光照射により活性ラジカル種を発生させて(a)成分を重合させるものである。光とは可視光線、紫外線のどちらでもよい。(d)成分としては適宜公知の光重合触媒を用いうるが、具体例としてはアセトフェノン、プロピオフェノン、ベンゾフェノン、キサントール、フルオレイン、ベンズアルデヒド、アンスラキノン、トリフェニルアミン、カルバゾール、3 −メチルアセトフェノン、4−メチルアセトフェノン、3−ペンチルアセトフェノン、4−メトキシアセトフェノン、3−ブロモアセトフェノン、2,2−ジエトキシアセトフェノン、p−ジアセチルベンゼン、3−メトキシベンゾフェノン、2,4,6−トリメチルベンゾフェノン、オリゴ(2−ヒドロキシー2−メチルー1−(4−(1−メチルビニル)フェニル)プロパノン)、4−アリルアセトフェノン、カンファーキノン、2,4,6−トリメチルベンゾイルジフェニルフォスフィンオキサイド、4−メチルベンゾフェノン、4−クロロ−4’−ベンジルベンゾフェノン、2−ヒドロキシ−2−メチルー1−フェニルー1−プロパノン、3−クロロキサントーン、3,9−ジクロロキサントーン、3−クロロ−8−ノニルキサントーン、ベンゾイル、ベンゾイルメチルエーテル、ベンゾインブチルエーテル、ビス(4−ジメチルアミノフェニル)ケトン、ベンジルメトキシケタール、2−クロロチオキサントーン、o−メチルベンゾエート、ベンジルジメチルケタール、メチルベンゾイルホーメートなどがあげられる。
【0015】
なお(d)成分の添加量は系を僅かに光感応化するだけで良いので、この(c)成分100重量部の割合に対し0.01〜10重量部の範囲にすれば良いが、一般には0.1〜5重量部の範囲とすることが好ましい。また、光照射によりラジカルを発生させる化合物だけでなく、熱重合開始剤やレゾックス重合開始剤などを併用して、熱重合、レドックス重合性能などを付加することができる。
【0016】
本発明の組成物は必須成分として上記成分からなるが、更に必要に応じて、硬化前の流れ特性を改善するチキソトロピック剤、硬化後のゴム状弾性体に必要な機械的性質を付与する充填材、密着性を向上させるための密着付与剤などを添加できる。またエポキシ基やアクリロイル基などの重合を阻害する重合禁止剤、金属イオンなどを捕らえる金属イオン捕捉剤、老化防止剤、着色剤なども添加することができる。
【0017】
【発明の実施の形態】
【実施例】
表1 に記載の各成分を混合して組成物を調製した。表中の略名は以下の通りである。
エピコート828:ビスフェノールA型エポキシ樹脂( ジャパンエポキシレジン社製)
イミダゾール1:2,4−ジアミノ−6−2’−メチルイミダゾール−(1’)−エチル−s−トリアジンイソシアヌル酸付加物
イミダゾール2:2−フェニル−4,5−ジヒドロキシメチルイミダゾール
イミダゾール3:1−ベンジル−2−メチルイミダゾール
エポキシアクリレート:ビスフェノールA型、粘度10000( mPa・s/ ℃)
ウレタンアクリレート: 両末端アクリロイル基のポリウレタン、粘度20000(mPa・s/ ℃ )
イルガキュアー#184:1−ヒドロキシ−シクロヘキシル−フェニル−ケトン
【0018】
調製された各種組成物を以下の試験を行った。
保存性試験:組成物を遮光された茶色ポリエステル容器に密封し、40℃で14日保存した。増粘したものやゲル状物ができているものは×、変化無いものは○とした。
【0019】
光硬化性:各組成物を25mm×100mm×3mmの透明ガラステストピース板に塗布しJIS−K−6861に準じてテストピースを貼り合わせた。紫外線1000mJ/cmを照射して貼り合わせたガラスピースを3kgで引っ張り、保持されていれば○、保持されていなければ×とした。
【0020】
加熱硬化性:組成物を直径30mm深さ10mmのアルミ製容器に5mm高まで各組成物を満たし、120℃×1時間加熱した。指触により硬化していれば○、液状態部分があれば×とした。
【0021】
接着力:光硬化性試験と同じテストピースを作成し、紫外線1000mJ/cmを照射した後、120℃×1時間加熱した。JIS−K−6861に基づき、引っ張り速度10mm/minの条件で引っ張り強度を測定した。20kgf/cm2以上のものは○、それ以下は×とした。
【0022】
【表1】

Figure 0003871046
【0023】
【発明の効果】
本発明は室温での保存性が非常に良く、粘度変化が少なく作業性に優れ、紫外線、可光線などの光を照射することで、容易に固化し被着体を固定することができ、その後、加熱硬化することにより十分な接着力を有する一液性複合硬化組成物の硬化方法である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for curing a one-component composite curable resin composition that can be temporarily fixed by light irradiation, is completely cured by heating, has good storage stability, and is durable.
[0002]
[Prior art]
Conventionally, many epoxy resins have been used in various fields. Epoxy resins are known to be two-component and one-component. Two-component requires mixing, but can be cured at room temperature. One-component does not require mixing, but needs to be heated. Each of these features is possessed. Industrially, a one-component epoxy resin that can be quickly cured even when there is a heating step is often used.
[0003]
However, the one-pack type epoxy resin has a problem that the viscosity of the epoxy resin is lowered in the stage from heating to curing, and the epoxy resin is dripped. In addition, since the epoxy resin is in a liquid state before being cured, the adherend cannot be held in an uncured state. Therefore, the epoxy resin is usually fixed using a jig or the like that holds the adherend in an adherent state. In the heating process, it was necessary to put this jig together in a heating furnace, and it was necessary to consider heat loss due to the jig.
[0004]
On the other hand, a photocurable resin in which a photoinitiator is blended with an oligomer containing a (meth) acryloyl group is cured in an extremely short time by irradiating energy rays such as ultraviolet rays. However, the photocurable resin is not cured at a portion where the light does not hit or a deep portion when the resin is thick. Therefore, it may not be used for bonding to places where shadows occur.
[0005]
If both one-component epoxy resin and photo-curing resin are mixed, the adhesive is applied and the adherend is held, and then the photo-curing resin is partially cured if irradiated with light. And can be held in a deposited shape. Thereafter, the entire resin may be cured by heating to increase the adhesive strength.
[Problems to be solved by the invention]
However, mixing of the acrylic resin photo-curing resin and the epoxy resin has poor storage stability at room temperature and slow photo-curing properties, and none has sufficient adhesive strength. The reason is that when the latent curing agent, which is an essential component for heat curing the epoxy resin in one liquid, is compatible with the acrylic resin, the curing agent component gradually decomposes and elutes under the influence of the acrylic resin, This is because the epoxy resin and the eluted curing agent component react with each other. When dihydrazide or modified aliphatic amine is used, this phenomenon occurs and the viscosity increases and gels during storage. Furthermore, photocurability will also fall gradually.
[0006]
Dicyandiamine acid anhydride is used as a curing agent for epoxy resins that are not easily attacked by acrylic resins when mixed with acrylic resins, but this is not industrially suitable due to the high curing temperature required for heat curing. .
[0007]
What the present invention should solve is that storage stability at room temperature that solves the above problems is very good, there is little change in viscosity, excellent workability, and it is easy to irradiate light such as ultraviolet rays and light rays. An object of the present invention is to provide a method for curing a one-component composite curable resin composition that can be solidified and fix an adherend and then has a sufficient adhesive force by heat curing.
[0008]
[Means for Solving the Problems]
That is, the present invention relates to (a) a compound having one or more epoxy groups in one molecule; 100 parts by weight, (b) 2,4-diamino-6- [2′-methylimidazole- (1 ′)] — Ethyl-s-triazine isocyanuric acid adduct; 5 to 20 parts by weight, (c) a compound having an unsaturated double bond in one molecule; 25 to 85 parts by weight, (d) a compound capable of generating a radical upon irradiation with light; (C) Applying a one-component composite curable resin composition comprising 0.01 to 10 parts by weight to 100 parts by weight of the component , fixing the adherend by light irradiation, and then heating. Is a curing method characterized by curing the entire resin .
[0009]
Hereinafter, the present invention will be described in detail. The component (a) of the present invention is an epoxy resin having one or more epoxy groups in one molecule, for example, diglycidyl ether derived from bisphenol A and epichlorohydrin, and derivatives thereof, bisphenol F and epichlorohydrin. Diglycidyl ether and so-called epibis liquid epoxy resins such as derivatives thereof, diglycidyl ether derived from polyhydric alcohol and epichlorohydrin, glycidyl ester derived from polybasic acid and epichlorohydrin, and derivatives thereof, hydrogenated bisphenol A and Glycidyl ether derived from epichlorohydrin, 3,4-epoxy-6-methylcyclohexylmethyl-3,4-epoxy-6-methylcyclohexanecarboxylate, vinylcyclohexene oxide, bis ( , 4-epoxy-6-methylcyclohexylmethyl) adipate and the like, and derivatives thereof, 5,5′-dimethylhydantoin type epoxy resin, triglycidyl isocyanurate, substituted epoxy derived from isobutylene, etc. . Examples of commercially available products include Epicoat 828 and 807 manufactured by Japan Epoxy Resin, and Epicron 830 and 835LV manufactured by Dainippon Ink Industries, Ltd. (A) A component may be used by 1 type and may be used in mixture of 2 or more types.
[0010]
The component (b) used in the present invention is 2,4-diamino-6- [ 2′-methylimidazole- (1 ′) ] -ethyl-s-triazine isocyanuric acid adduct. This compound is a so-called imidazole compound and is a component that cures the component (a) by heating. When an ordinary imidazole compound is mixed with the component (c) described later, a component for curing the component (a) is eluted, but it is not present when the compound of the present invention is used. Component (b) is added in an amount of 5 to 20 parts by weight per 100 parts by weight of component (a). If it is less than 5 parts by weight, it cannot be sufficiently cured by heating. Moreover, when it exceeds 20 weight part, it is economically disadvantageous.
[0011]
The compound (c) having an unsaturated double bond in one molecule used in the present invention is a compound capable of radical polymerization. The unsaturated double bond is not particularly limited as long as it is an ethylenic double bond such as a vinyl group, but is preferably a (meth) acryloyloxy group, and a compound having the group at the terminal or side chain of the molecule is suitable. . Specific compounds include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, dicyclopentenyl (meth) acrylate, di Cyclopentenyloxymethyl (meth) acrylate, (meth) acrylic acid, cyclohexyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, 2-ethylhexyl (meth) acrylate, methoxycarbonylmethyl (meth) acrylate, ethoxycarbonylmethyl (meth) ) Acrylate, acid phosphooxyethyl (meth) acrylate, isobornyl (meth) acrylate, hydrogenated dicyclopentadienyl di (meth) acrylate, dipenta Compounds having a (meth) acryloyloxy group such as sultolpenta (meth) acrylate, dipentaerythritol hexaacrylate, neopentylglycol di (meth) acrylate, phenyloxyethyl (meth) acrylate, etc. are raised. Examples of the compound include vinyl acetate, methyl vinyl ether, styrene, vinyl toluene and the like. Moreover, the radically polymerizable vinyl compound (A) of the present invention can be used by mixing one or more of the aforementioned vinyl compounds.
[0012]
Furthermore, as the component (A) other than the above, polyurethane having (meth) acryloyl groups at both ends, bisphenol A having (meth) acryloyl groups at both ends, polybutadiene having (meth) acryloyl groups at both ends, etc. An oligomer having an unsaturated double bond at both ends can be used. By using these compounds in combination with the monomer having the unsaturated double bond, the flexibility of the cured product of the adhesive composition can be increased. Characteristics such as heat resistance can be adjusted over a wide range.
[0013]
(C) A component is 25-85 weight part with respect to 100 weight part of (a) component. If it is less than 25 parts by weight, the degree of solidification by light irradiation is low, and if it is more than 85 parts by weight, the adhesive strength is low, the durability is lowered, and the function as an adhesive is lowered.
[0014]
The component (d) used in the present invention generates active radical species by light irradiation to polymerize the component (a). The light may be either visible light or ultraviolet light. As the component (d), known photopolymerization catalysts can be used as appropriate. Specific examples include acetophenone, propiophenone, benzophenone, xanthol, fluorin, benzaldehyde, anthraquinone, triphenylamine, carbazole, 3-methylacetophenone, 4-methylacetophenone, 3-pentylacetophenone, 4-methoxyacetophenone, 3-bromoacetophenone, 2,2-diethoxyacetophenone, p-diacetylbenzene, 3-methoxybenzophenone, 2,4,6-trimethylbenzophenone, oligo (2 -Hydroxy-2-methyl-1- (4- (1-methylvinyl) phenyl) propanone), 4-allylacetophenone, camphorquinone, 2,4,6-trimethylbenzoyldiphenylphosphine oxide 4-methylbenzophenone, 4-chloro-4'-benzylbenzophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 3-chloroxanthone, 3,9-dichloroxanthone, 3-chloro-8 -Nonylxanthone, benzoyl, benzoylmethyl ether, benzoin butyl ether, bis (4-dimethylaminophenyl) ketone, benzylmethoxy ketal, 2-chlorothioxanthone, o-methylbenzoate, benzyldimethyl ketal, methylbenzoylformate, etc. can give.
[0015]
In addition, since the addition amount of the component (d) only needs to slightly light-sensitize the system, it may be in the range of 0.01 to 10 parts by weight with respect to 100 parts by weight of the component (c). Is preferably in the range of 0.1 to 5 parts by weight. In addition to a compound that generates radicals by light irradiation, thermal polymerization, redox polymerization performance, and the like can be added using a thermal polymerization initiator, a redox polymerization initiator, or the like in combination.
[0016]
The composition of the present invention comprises the above-mentioned components as essential components, and further, if necessary, a thixotropic agent that improves flow characteristics before curing, and a filling that imparts necessary mechanical properties to the rubber-like elastic body after curing. Materials, adhesion imparting agents for improving adhesion, and the like can be added. In addition, a polymerization inhibitor that inhibits polymerization of an epoxy group or an acryloyl group, a metal ion scavenger that captures metal ions, an anti-aging agent, a colorant, and the like can also be added.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
【Example】
The components described in Table 1 were mixed to prepare a composition. Abbreviations in the table are as follows.
Epicoat 828: Bisphenol A type epoxy resin (manufactured by Japan Epoxy Resin Co., Ltd.)
Imidazole 1: 2,4-diamino-6- [2'-methyl imidazole - (1 ')] - ethyl -s- triazine isocyanuric acid adduct <br/> imidazole 2: 2-phenyl-4,5 Dihydroxymethylimidazole imidazole 3: 1-benzyl-2-methylimidazole epoxy acrylate: bisphenol A type, viscosity 10,000 (mPa · s / ° C)
Urethane acrylate: Polyurethane having acryloyl groups at both ends, viscosity 20000 (mPa · s / ° C.)
Irgacure # 184: 1-hydroxy-cyclohexyl-phenyl-ketone
The following tests were performed on the prepared various compositions.
Storage stability test: The composition was sealed in a light-shielded brown polyester container and stored at 40 ° C. for 14 days. Thickened ones or gel-like ones were marked with ×, and those without change were marked with ○.
[0019]
Photocurability: Each composition was applied to a transparent glass test piece plate of 25 mm × 100 mm × 3 mm, and the test pieces were bonded in accordance with JIS-K-6861. The glass piece bonded by irradiation with ultraviolet rays of 1000 mJ / cm 2 was pulled with 3 kg, and it was evaluated as “good” when held and “x” when not held.
[0020]
Heat-curing property: Each composition was filled in an aluminum container having a diameter of 30 mm and a depth of 10 mm up to a height of 5 mm, and heated at 120 ° C. for 1 hour. If it was cured by finger touch, it was rated as ◯, and if there was a liquid state part, it was marked as x.
[0021]
Adhesive force: The same test piece as in the photocuring test was prepared, and after irradiation with ultraviolet rays of 1000 mJ / cm 2 , it was heated at 120 ° C. for 1 hour. Based on JIS-K-6861, the tensile strength was measured under the condition of a tensile speed of 10 mm / min. Those with 20 kgf / cm 2 or more were marked with ◯, and those with less than that were marked with ×.
[0022]
[Table 1]
Figure 0003871046
[0023]
【The invention's effect】
The present invention has very good storage stability at room temperature, little change in viscosity, excellent workability, and irradiation with light such as ultraviolet rays and light rays can easily solidify and fix the adherend. a method for curing one-component composite cured compositions having sufficient adhesive strength by heat curing.

Claims (1)

(a)1分子中に1つ以上のエポキシ基を有する化合物;100重量部、(b)2,4−ジアミノ−6−[2’−メチルイミダゾール−(1’)]−エチル−s−トリアジンイソシアヌル酸付加物;5〜20重量部、(c)一分子中に不飽和二重結合を有する化合物;25〜85重量部、(d)光照射によりラジカルを発生させる化合物;(c)成分100重量部に対し0.01〜10重量部、からなる一液性複合硬化型樹脂組成物を被着体に塗布し、光照射により被着体を固定し、次いで加熱することにより樹脂全体を硬化させることを特徴とする硬化方法。 (A) Compound having one or more epoxy groups in one molecule; 100 parts by weight, (b) 2,4-diamino-6- [2′-methylimidazole- (1 ′)]-ethyl-s-triazine Isocyanuric acid adduct; 5 to 20 parts by weight, (c) a compound having an unsaturated double bond in one molecule; 25 to 85 parts by weight, (d) a compound capable of generating radicals upon light irradiation; (c) component 100 A one-component composite curable resin composition comprising 0.01 to 10 parts by weight with respect to parts by weight is applied to the adherend, the adherend is fixed by light irradiation, and then the entire resin is cured by heating. A curing method, characterized in that
JP2002295185A 2002-10-08 2002-10-08 Method for curing one-component composite curable resin composition Expired - Lifetime JP3871046B2 (en)

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