JPS63193969A - Epoxy resin powder coating suitable for coil fixation - Google Patents
Epoxy resin powder coating suitable for coil fixationInfo
- Publication number
- JPS63193969A JPS63193969A JP2677087A JP2677087A JPS63193969A JP S63193969 A JPS63193969 A JP S63193969A JP 2677087 A JP2677087 A JP 2677087A JP 2677087 A JP2677087 A JP 2677087A JP S63193969 A JPS63193969 A JP S63193969A
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- powder coating
- weight
- curing agent
- dicyandiamide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 43
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 43
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 title claims description 35
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 14
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims abstract description 14
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229930185605 Bisphenol Natural products 0.000 claims abstract description 6
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 5
- 125000005591 trimellitate group Chemical group 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 5
- 229920003986 novolac Polymers 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 3
- 150000002460 imidazoles Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- WHBCCYZKPFWPLU-UHFFFAOYSA-N 1,1-diphenylpropylbenzene Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(CC)C1=CC=CC=C1 WHBCCYZKPFWPLU-UHFFFAOYSA-N 0.000 description 1
- UITKHKNFVCYWNG-UHFFFAOYSA-N 4-(3,4-dicarboxybenzoyl)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1C(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 UITKHKNFVCYWNG-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、モ島夕や発電機における固定子コイル（ステ
ータコイル）や回転子コイル（アーマチュアコイル）の
固着に好適なエポキシ樹脂粉体塗料に関するものである
。[Detailed Description of the Invention] [Technical Field] The present invention relates to an epoxy resin powder coating suitable for fixing stator coils and rotor coils (armature coils) in motor generators and generators. be.
従来、エポキシ樹脂に対して硬化剤としてカルボン酸無
水物を配合したエポキシ樹脂粉体塗料は知られている（
例えば、特開昭６０−２４３１６８号公報、特開昭６１
−８９２７１号公報）、このカルボン酸無水物を硬化剤
とするエポキシ樹脂粉体塗料は１本来耐熱性と機械的強
度にすぐれた塗膜を与え、電気・電子部品に対する絶縁
塗料として用いられているが、吸湿性が強いために、空
気中の水分を吸湿し、貯蔵安定性が悪くなると共に、硬
化速度が低下するという問題がある。Conventionally, epoxy resin powder coatings in which carboxylic acid anhydride is blended as a curing agent with epoxy resin have been known (
For example, JP-A-60-243168, JP-A-61
-89271 Publication), this epoxy resin powder coating using carboxylic acid anhydride as a curing agent provides a coating film with inherently excellent heat resistance and mechanical strength, and is used as an insulating coating for electrical and electronic parts. However, since it has strong hygroscopicity, it absorbs moisture from the air, resulting in poor storage stability and a decrease in curing speed.
本発明は、従来のエポキシ樹脂粉体塗料に見られる前記
問題を解決することを目的とする６〔構 成〕
本発明によれば、ビスフェノール型エポキシ樹脂と分子
内に３個以上のエポキシ基を有する多官能エポキシ樹脂
を含む混合エポキシ樹脂と、ジシアンジアミドとイミダ
ゾール類・トリメリテートとからなる硬化剤と、充填剤
とからなるコイル固着に好適なエポキシ樹脂粉体塗料が
提供される。The present invention aims to solve the above-mentioned problems found in conventional epoxy resin powder coatings.6 [Structure] According to the present invention, a bisphenol-type epoxy resin and three or more epoxy groups in the molecule are used. An epoxy resin powder coating suitable for fixing coils is provided, which is comprised of a mixed epoxy resin including a polyfunctional epoxy resin having the above-mentioned properties, a curing agent consisting of dicyandiamide and imidazole trimellitate, and a filler.
本発明で用いるエポキシ樹脂には、ビスフェノール型エ
ポキシ樹脂と分子内に３個以上のエポキシ基を有する多
官能エポキシ樹脂が必須樹脂成分として含まれる。ビス
フェノール型エポキシ樹脂には、ビスフェノールＡ型及
びＦ型があり、好ましくはビスフェノールＡ型である。The epoxy resin used in the present invention contains a bisphenol type epoxy resin and a polyfunctional epoxy resin having three or more epoxy groups in the molecule as essential resin components. Bisphenol type epoxy resins include bisphenol A type and F type, with bisphenol A type being preferred.
分子内に３個以上のエポキシ基を有する多官能エポキシ
樹脂には、例えば、ノボラック型（オルソクレゾールノ
ボラック型、フェノールノボラック型等）エポキシ樹脂
、トリグリシジルエーテル型樹脂（シアヌル酸やトリフ
ェニルプロパンのエポキシ化合物）、テトラグリシジル
エーテル型樹脂（ビスフェノールＦやテトラオキシテト
ラフェニルエタンのエポキシ化合物等）等のものが含ま
れる。これらの中でもノボラック型エポキシ樹脂は溶融
粘度が低いので充填剤を多く配合しても得られた粉体塗
料の溶融流れ性がよく、粉体の流動性もよいので好まし
い。Polyfunctional epoxy resins having three or more epoxy groups in the molecule include, for example, novolac type (orthocresol novolak type, phenol novolac type, etc.) epoxy resins, triglycidyl ether type resins (epoxy resins of cyanuric acid and triphenylpropane), etc. compounds), tetraglycidyl ether type resins (epoxy compounds of bisphenol F, tetraoxytetraphenylethane, etc.), and the like. Among these, novolak-type epoxy resins are preferred because they have a low melt viscosity, so even if a large amount of filler is blended, the resulting powder coating has good melt flowability, and the powder has good fluidity.
使用するエポキシ樹脂１００重量部のうち、前記多官能
エポキシ樹脂は、３５〜８５重量部、好ましくは５０〜
７５重量部の割合で用いられる。また、ビスフェノール
型エポキシ樹脂の平均分子量は、１２００〜３０００、
好ましくは１３００−２６００であり、このような平均
分子量を持つビスフェノール型エポキシ樹脂は、平均分
子量９００〜３０００、好ましくは１３００〜１７００
のものと、平均分子量２０００−４０００、好ましくは
２４００−３０００のものを混合して調製すればできた
粉体塗料の流動性がよく、溶融流れ性もよいので好まし
い。Of the 100 parts by weight of the epoxy resin used, the polyfunctional epoxy resin accounts for 35 to 85 parts by weight, preferably 50 to 85 parts by weight.
It is used in a proportion of 75 parts by weight. In addition, the average molecular weight of the bisphenol type epoxy resin is 1200 to 3000,
Preferably it is 1300-2600, and the bisphenol type epoxy resin having such an average molecular weight has an average molecular weight of 900-3000, preferably 1300-1700.
It is preferable to prepare a powder coating by mixing one with an average molecular weight of 2,000 to 4,000, preferably 2,400 to 3,000, since the resulting powder coating has good fluidity and good melt flowability.
本発明においては、硬化剤としてジシアンジアミドとイ
ミダゾール類・トリメリテートの組合せを用いる。この
場合、イミダゾール類・トリメリテートは次式で表わさ
れる。In the present invention, a combination of dicyandiamide and imidazoles/trimelitate is used as a curing agent. In this case, the imidazole trimellitate is represented by the following formula.
前記式中、Ｒ１はアルキル基又はアリール基であるが、
貯蔵安定性の面で特にフェニル基が好ましい。Ｒ２はシ
アノエチル基、ビニル基、フェニル基であり、好ましく
はシアノエチル基である。In the above formula, R1 is an alkyl group or an aryl group,
A phenyl group is particularly preferred in terms of storage stability. R2 is a cyanoethyl group, a vinyl group, or a phenyl group, preferably a cyanoethyl group.
本発明で用いる硬化剤は、前記のようにジシアンジアミ
ドとイミダゾール類・トリメリテートとの組合せを用い
ることが重要である。ジシアンジアミドのみの使用では
粉体塗料の硬化速度が遅すぎ、一方、イミダゾール類・
トリメリテートのみの使用では、逆に粉体塗料の硬化速
度が速すぎる。As the curing agent used in the present invention, it is important to use a combination of dicyandiamide and imidazole/trimelitate as described above. The curing speed of powder coatings is too slow if only dicyandiamide is used; on the other hand, imidazoles and
If only trimellitate is used, the curing speed of the powder coating will be too fast.
両者の併用により、前記エポキシ樹脂に対して、好まし
い硬化速度を示す硬化剤を得ることができる。また、両
者の併用により、接着力の向上した粉体塗料を得ること
ができる。ジシアンジアミドとイミダゾール類・トリメ
リテートとの使用割合は、両者の合計重量に対してジシ
アンジアミドが５〜７０重量％、好ましくは１０〜６０
重景％と重量け好ましくは１０〜４０重量％である。ま
た、全硬化剤の使用量は、エポキシ樹脂１００重量部に
対し４〜１５重量部、好ましくは６〜９重量部の割合で
ある。By using both in combination, it is possible to obtain a curing agent that exhibits a preferable curing speed for the epoxy resin. Further, by using both in combination, a powder coating with improved adhesive strength can be obtained. The usage ratio of dicyandiamide and imidazoles/trimelitate is 5 to 70% by weight, preferably 10 to 60% by weight of dicyandiamide based on the total weight of both.
The difference between weight and weight is preferably 10 to 40% by weight. The total amount of curing agent used is 4 to 15 parts by weight, preferably 6 to 9 parts by weight, per 100 parts by weight of the epoxy resin.
本発明の粉体塗料には、充填剤が配合されるが、この充
填剤としては、慣用のもの、例えば、シリカ、炭酸カル
シウム、ウオラストナイト（針状のケイ酸カルシウム）
、アルミナ、クレー、マイカ、タルク、ガラス繊維粉末
、炭素繊維粉末等が用いられる。高温で長時間使用した
時の衝撃強度（高温衝撃強度）の劣化の少ない粉体塗料
を得るには、ウオラストナイトのような針状充填剤やマ
イカのようなりん片状充填剤を用いるのが好ましい。炭
酸カルシウムのような粒状充填剤のみの使用では。The powder coating of the present invention is blended with fillers, such as conventional fillers such as silica, calcium carbonate, and wollastonite (acicular calcium silicate).
, alumina, clay, mica, talc, glass fiber powder, carbon fiber powder, etc. are used. In order to obtain a powder coating with less deterioration in impact strength (high temperature impact strength) when used at high temperatures for long periods of time, it is recommended to use needle-like fillers such as wollastonite or flake-like fillers such as mica. is preferred. In the use of only particulate fillers such as calcium carbonate.
高温衝撃強度の良好な粉体塗料を得ることは困難である
が、針状やりん片状の充填剤を併用又は単独で、好まし
くは併用して用いることにより、このような困難な解消
される。充填剤の使用割合は、エポキシ樹脂１００重量
部に対し、３０−２００重量部、好ましくは４０〜１５
０重量部の割合である。また、針状又はりん片状°充填
剤の使用割合は、全充填剤中、２０−１００重量％、好
ましくは３０〜８０重量％である。Although it is difficult to obtain a powder coating with good high-temperature impact strength, such difficulties can be overcome by using needle-like or flake-like fillers together or alone, preferably in combination. . The proportion of the filler used is 30-200 parts by weight, preferably 40-15 parts by weight, per 100 parts by weight of the epoxy resin.
The proportion is 0 parts by weight. The proportion of the acicular or scaly filler used is 20 to 100% by weight, preferably 30 to 80% by weight of the total filler.
本発明の粉体塗料には、前記成分の他、この種粉体塗料
に慣用の補助成分、例えば、アクリル酸オリゴマー等の
レベリング剤、顔料、各種硬化促進剤等を適量配合する
ことができる。In addition to the above-mentioned components, the powder coating of the present invention may contain appropriate amounts of auxiliary components commonly used in powder coatings of this type, such as leveling agents such as acrylic acid oligomers, pigments, and various curing accelerators.
本発明のエポキシ樹脂粉体塗料を調製するには、通常の
方法を用いればよく、例えば、配合成分をミキサー等に
よって混合した後、ニーダ等による混合処理を施すか、
エクストルーダ等による溶融混合処理を施した後、混合
物を冷却固化し、微粉砕すればよい。In order to prepare the epoxy resin powder coating of the present invention, a conventional method may be used. For example, the ingredients may be mixed using a mixer or the like, and then mixed using a kneader or the like, or
After performing a melt-mixing process using an extruder or the like, the mixture may be cooled and solidified, and then finely pulverized.
本発明のエポキシ樹脂粉体塗料は、電気・電子機器及び
部品の絶縁用粉体塗料、殊に、モータや発電機における
固定子コイルや回転子コイルの固着用粉体塗料として好
適である１回転子コイルは。The epoxy resin powder coating of the present invention is suitable as a powder coating for insulating electric/electronic equipment and parts, particularly for fixing stator coils and rotor coils in motors and generators. Child coil.
その回転の際に高温に上昇すると共に、遠心力や振動を
受け、コイルがバラバラになって飛び出す傾向があり、
耐熱性のよい樹脂によってコイル全体を強く固着するこ
とが必要である。従来のカルボン酸無水物を硬化剤とす
るエポキシ樹脂粉体塗料では、吸湿性が強く、その吸湿
により耐熱性及び機械的強度にすぐれた安定性塗膜を得
ることが回連で、コイル固着用粉体塗料としては不満足
のものであったが１本発明の粉体塗料では吸湿性が少く
、耐熱性及び機械的強度にすぐれた安定性塗膜を得るこ
とができ、コイル固着用粉体塗料として好適のものであ
る。As the coil rotates, it reaches a high temperature and is subjected to centrifugal force and vibration, which tends to cause the coil to break apart and fly out.
It is necessary to firmly fix the entire coil using a resin with good heat resistance. Conventional epoxy resin powder coatings that use carboxylic acid anhydride as a curing agent have strong hygroscopicity, and the moisture absorption produces a stable coating film with excellent heat resistance and mechanical strength. Although it was unsatisfactory as a powder coating, the powder coating of the present invention has low hygroscopicity and can provide a stable coating film with excellent heat resistance and mechanical strength. It is suitable as
次に本発明を実施例によりさらに詳細に説明する。 Next, the present invention will be explained in more detail with reference to Examples.
実施例
表−１に示す成分組成（重量部）のエポキシ樹脂粉体塗
料を調製し、その粉体塗料の性能評価を行った。その性
能評価結果を表−１に示す。EXAMPLE An epoxy resin powder coating having the component composition (parts by weight) shown in Table 1 was prepared, and the performance of the powder coating was evaluated. The performance evaluation results are shown in Table 1.
なお、表−１に示した配合成分は次の内容を有する。The ingredients shown in Table 1 have the following contents.
エピコート１００７：油化シェル社製、ビスフェノール
Ａ型エポキシ樹脂１分子量２９００）エピコート１００
４：油化シェル社製、ビスフェノールＡ型エポキシ樹脂
、分子量１６００）エピコート１００２：油化シェル社
製、ビスフェノールＡ型エポキシ樹脂、分子量１２６０
）ＥＰＰＮ ２０１：日本化薬社製、フェノールノボラ
ック型エポキシ樹脂、軟化点６５℃）
ＥＯＣＮ １０４：日本化薬社製、オルトクレゾールノ
ボラック型エポキシ樹脂、軟化点９５
℃）
レベリング剤ニアクリル酸エステルオリゴマー硬化剤Ａ
ニジシアンジアミド
硬化剤Ｂ：ｌ−シアノエチル２−フェニルイミダゾール
・トリメリテート
（Ｒ１：フェニル、Ｒ２ニジアノエチル）ＢＴＤＡ：ベ
ンゾフェノンテトラカルボン酸無水物また、粉体塗料の
性能評価の方法及び評価基準は以下の通りである。Epicoat 1007: manufactured by Yuka Shell Co., Ltd., bisphenol A type epoxy resin (1 molecular weight: 2900) Epicoat 100
4: Manufactured by Yuka Shell Co., Ltd., bisphenol A type epoxy resin, molecular weight 1600) Epicoat 1002: Manufactured by Yuka Shell Co., Ltd., bisphenol A type epoxy resin, molecular weight 1260
) EPPN 201: Nippon Kayaku Co., Ltd., phenol novolac type epoxy resin, softening point 65°C) EOCN 104: Nippon Kayaku Co., Ltd., ortho-cresol novolak type epoxy resin, softening point 95°C) Leveling agent Niacrylate ester oligomer curing agent A
Nidicyandiamide curing agent B: l-cyanoethyl 2-phenylimidazole trimellitate (R1: phenyl, R2 didianoethyl) BTDA: benzophenone tetracarboxylic acid anhydride The method and evaluation criteria for evaluating the performance of powder coatings are as follows. .
（１）衝撃強さ
試験塗装物の製作；１辺６０＋ａｍ、厚さ３．２ｍｍの
軟鋼板の上を粉体塗料で塗装し、加熱硬化
して膜厚的０．３ｍｍの塗膜を形成した。(1) Fabrication of coated article for impact strength test: A mild steel plate with a side of 60+ am and a thickness of 3.2 mm was coated with powder paint and cured by heating to form a coating film with a thickness of 0.3 mm. .
測 定；デュポン式衝撃試験機によって次のように測
定した。上記試験塗装物を先
端が曲率半径１／４インチの半球状の撃心とその撃心に
対応した位置に曲率半
径約１／４インチの半球状の穴を有する台との間に装着
し、上記撃心の上に
１ｋｇの荷重を落下させて試験塗装物を凹状に変形させ
、変形部分の塗膜が割
れて剥れるときの荷重の落下距離を測
定した。この値が４２０ｍ＋ｍ以上のものは衝撃強さが
良と判定した。Measurement: Measured using a DuPont impact tester as follows. The test coating is mounted between a hemispherical center of impact with a radius of curvature of 1/4 inch at the tip and a stand having a hemispherical hole with a radius of curvature of approximately 1/4 inch at a position corresponding to the center of impact, A load of 1 kg was dropped onto the center of impact to deform the test coated object into a concave shape, and the distance the load fell was measured when the coating film at the deformed portion cracked and peeled off. Those with this value of 420 m+m or more were judged to have good impact strength.
（２）耐熱性
１０＋ａｍ直径の軟鋼丸棒に約０．３＋ａｍの厚さに粉
体塗装し、これに裸銅線をかけ、 ５００ｇの荷重を吊
す。(2) Heat resistance A mild steel round bar with a diameter of 10+am is powder coated to a thickness of approximately 0.3+am, a bare copper wire is tied to this, and a load of 500g is suspended.
試料と裸銅線間は１００ｖの電圧を印加し、かつ、印加
電圧を通してブザーもしくはランプ作動回路を形成する
。試料は炉中にて３℃／分の昇温速度で温度をあげ、塗
膜が荷重付の裸銅線の力によって破断してブザーもしく
はランプがついた時の温度を測定し、その値が４２０℃
以上であれば耐熱住良と判定した。A voltage of 100 V is applied between the sample and the bare copper wire, and a buzzer or lamp operating circuit is formed through the applied voltage. The temperature of the sample was raised in a furnace at a heating rate of 3°C/min, and the temperature was measured when the coating broke due to the force of the loaded bare copper wire and a buzzer or lamp turned on. 420℃
If it is above, it is determined that the building is heat resistant.
（３）ゲルタイム（秒／２００℃）
ＪＩＳ Ｃ−２１０４により、熱板温度２００℃で測定
した。(3) Gel time (seconds/200°C) Measured at a hot plate temperature of 200°C according to JIS C-2104.
（４）流れ性
試験錠剤の製造；粉体塗料０．５ｇを直径１３ｍｍの円
筒状の金型に入れ、２０ｋｇ／ ｔｙｌの圧力をかけて
直径１３ｍｍ、厚さＴｌｌ１１の錠剤を製造した。(4) Flowability test Manufacture of tablets; 0.5 g of the powder coating was placed in a cylindrical mold with a diameter of 13 mm, and a pressure of 20 kg/tyl was applied to manufacture tablets with a diameter of 13 mm and a thickness of Tll11.
測 定；この錠剤を４５°に傾斜した１５０’Ｃの鋼
板上に乗せて溶融させ、傾斜面に沿っ
てその溶融物を流動させる。それは短
時間のうちにゲル化がはじまり固化す
るので同化後（２０〜３０分後）その固化物の傾斜方向
の長さくＦｍｍ）を測定し、次式によって流れ性を求め
た。Measurement: The tablet is melted by placing it on a 150'C steel plate inclined at 45 degrees, and the melt is caused to flow along the inclined surface. Since it begins to gel and solidify within a short time, the length (Fmm) of the solidified product in the inclination direction was measured after assimilation (20 to 30 minutes later), and the flowability was determined using the following formula.
（５）貯蔵安定性
粉体塗料を４０℃、相対湿度８０％の恒温恒湿室の中に
７日間貯蔵したときに、このゲルタイムを上記と同じ方
法で測定し、その値が貯蔵前の値の６０％以上であれば
貯蔵安定性が良と判定した。(5) Storage stability When the powder coating is stored in a constant temperature and humidity room at 40°C and 80% relative humidity for 7 days, the gel time is measured using the same method as above, and the value is the value before storage. Storage stability was determined to be good if it was 60% or more.
手 続 補 正 書
昭和６３年メ月７７日
特許庁長官 小 川 邦 夫 殿 ；′；・１、
事件の表示
昭和６２年特許願第２６７７０号
２、発明の名称
コイル固着に好敵なエポキシ樹脂粉体塗料３、補正をす
る者
事件との関係 特許出願人
住 所 東京都中央区銀座四丁目１１番２号名称 ソ
マール株式会社
代表者 吉 浦 勇
４、代理人〒１５１
住 所 東京都渋谷区代々木１丁目５８番１０号５、
補正命令の日付 自発
８、補正の内容
本願明細書中において、以下のとおり補正を行います。Procedural Amendment Written on May 77, 1988 by Mr. Kunio Ogawa, Commissioner of the Patent Office ;';・1.
Display of the case 1986 Patent Application No. 26770 2 Title of the invention Epoxy resin powder coating that is a good enemy for coil fixation 3 Person making the amendment Relationship to the case Patent applicant address 11 Ginza 4-chome, Chuo-ku, Tokyo Number 2 Name: Somar Co., Ltd. Representative: Isamu Yoshiura 4, Agent: 151 Address: 1-58-10-5 Yoyogi, Shibuya-ku, Tokyo
Date of amendment order Voluntary action 8. Contents of amendment The following amendments will be made to the specification of this application.
（１）第６頁第１２行乃至第１３行の「アクリル酸オリ
ゴマー」を、「アクリル酸エステルオリゴマー」に訂正
します。(1) "Acrylic acid oligomer" in lines 12 and 13 of page 6 will be corrected to "acrylic acid ester oligomer."
（２）第８頁第７行、第９行及び第Ｌ１行の「油化シェ
ル社製」を、「油化シェルエポキシ社製」に訂正します
。(2) "Manufactured by Yuka Shell Co., Ltd." in lines 7, 9, and L1 of page 8 will be corrected to "manufactured by Yuka Shell Epoxy Co., Ltd."
Claims (1)
上のエポキシ基を有する多官能エポキシ樹脂を含む混合
エポキシ樹脂と、ジシアンジアミドとイミダゾール類・
トリメリテートとからなる硬化剤と、充填剤とからなる
コイル固着に好適なエポキシ樹脂粉体塗料。(1) Mixed epoxy resin containing bisphenol type epoxy resin and polyfunctional epoxy resin having three or more epoxy groups in the molecule, dicyandiamide and imidazole,
An epoxy resin powder coating suitable for fixing coils, consisting of a hardening agent consisting of trimellitate and a filler.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62026770A JPH07116402B2 (en) | 1987-02-07 | 1987-02-07 | Epoxy resin powder coating suitable for coil fixation |
| US07/764,101 US5153239A (en) | 1987-02-07 | 1991-09-05 | Epoxy resin powder coating containing imidazole trimellitates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62026770A JPH07116402B2 (en) | 1987-02-07 | 1987-02-07 | Epoxy resin powder coating suitable for coil fixation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63193969A true JPS63193969A (en) | 1988-08-11 |
| JPH07116402B2 JPH07116402B2 (en) | 1995-12-13 |
Family
ID=12202527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62026770A Expired - Lifetime JPH07116402B2 (en) | 1987-02-07 | 1987-02-07 | Epoxy resin powder coating suitable for coil fixation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07116402B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010126684A (en) * | 2008-11-28 | 2010-06-10 | Nitto Shinko Kk | Prepreg sheet |
| WO2011145317A1 (en) * | 2010-05-21 | 2011-11-24 | 日本曹達株式会社 | Curable powder coating composition, and cured product of same |
| JP2015209436A (en) * | 2014-04-23 | 2015-11-24 | ソマール株式会社 | Powdered paint, and method of producing coating using powdered paint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113267A (en) * | 1981-12-28 | 1983-07-06 | Kansai Paint Co Ltd | Resin composition for powder coating |
| JPS60202117A (en) * | 1984-03-26 | 1985-10-12 | Hitachi Chem Co Ltd | Epoxy resin composition |
| JPS6155113A (en) * | 1984-08-24 | 1986-03-19 | Mitsubishi Petrochem Co Ltd | Cresol novolak epoxy resin and its production |
| JPS61166825A (en) * | 1985-01-18 | 1986-07-28 | Matsushita Electric Ind Co Ltd | Epoxy resin composition |
-
1987
- 1987-02-07 JP JP62026770A patent/JPH07116402B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113267A (en) * | 1981-12-28 | 1983-07-06 | Kansai Paint Co Ltd | Resin composition for powder coating |
| JPS60202117A (en) * | 1984-03-26 | 1985-10-12 | Hitachi Chem Co Ltd | Epoxy resin composition |
| JPS6155113A (en) * | 1984-08-24 | 1986-03-19 | Mitsubishi Petrochem Co Ltd | Cresol novolak epoxy resin and its production |
| JPS61166825A (en) * | 1985-01-18 | 1986-07-28 | Matsushita Electric Ind Co Ltd | Epoxy resin composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010126684A (en) * | 2008-11-28 | 2010-06-10 | Nitto Shinko Kk | Prepreg sheet |
| WO2011145317A1 (en) * | 2010-05-21 | 2011-11-24 | 日本曹達株式会社 | Curable powder coating composition, and cured product of same |
| JP5721705B2 (en) * | 2010-05-21 | 2015-05-20 | 日本曹達株式会社 | Curable powder coating composition and cured product thereof |
| JP2015209436A (en) * | 2014-04-23 | 2015-11-24 | ソマール株式会社 | Powdered paint, and method of producing coating using powdered paint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07116402B2 (en) | 1995-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0710958B2 (en) | Epoxy resin powder coating suitable for slot insulation | |
| KR0133653B1 (en) | Power epoxy resin coating composition | |
| US5747565A (en) | Powder coating composition | |
| US5153239A (en) | Epoxy resin powder coating containing imidazole trimellitates | |
| US4923910A (en) | Epoxy resin powder coating composition with excellent adhesibility | |
| JPS63193969A (en) | Epoxy resin powder coating suitable for coil fixation | |
| JP3807808B2 (en) | One-component epoxy resin composition for fixing coils | |
| JP2869635B2 (en) | Epoxy resin composition | |
| JPS60181122A (en) | Powder suitable for applying electric insulating coating on electric wire | |
| US6899917B2 (en) | Powdered epoxy composition | |
| KR960015971B1 (en) | Epoxy resin powder coating composition | |
| JPH07103343B2 (en) | Epoxy resin powder coating suitable for slot insulation | |
| US6933332B2 (en) | Powdered epoxy composition | |
| JPH07100778B2 (en) | Epoxy resin powder coating | |
| JP3312485B2 (en) | Powder epoxy resin composition | |
| JP2896471B2 (en) | Epoxy resin composition | |
| KR950005345B1 (en) | Epory resin powder coating composition | |
| JPH0223584B2 (en) | ||
| JPH0223583B2 (en) | ||
| KR960015973B1 (en) | Epoxy resin powder coating composition with an excellent adhesibility | |
| JPS63202676A (en) | Epoxy resin powder coating having excellent adhesive property | |
| JPS6253382A (en) | Epoxy resin powder composition for coating electric wire | |
| JP2006111721A (en) | Epoxy resin composition for impregnation and electric/electronic part device | |
| JPH0211667A (en) | Epoxy resin powder coating composition | |
| JPS62132974A (en) | Powder coating composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |