JP4006751B2 - Resin composition for electrical insulation and electrical equipment - Google Patents
Resin composition for electrical insulation and electrical equipment Download PDFInfo
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- JP4006751B2 JP4006751B2 JP2002155952A JP2002155952A JP4006751B2 JP 4006751 B2 JP4006751 B2 JP 4006751B2 JP 2002155952 A JP2002155952 A JP 2002155952A JP 2002155952 A JP2002155952 A JP 2002155952A JP 4006751 B2 JP4006751 B2 JP 4006751B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、電気絶縁用樹脂組成物及び電気機器に関し、さらに詳しくは芳香族系多官能エポキシ樹脂、エチレングリコールジグリシジルエーテル、ジシアンジアミド、イミダゾール化合物を主成分とする電気絶縁用樹脂組成物及びこの電気絶縁用樹脂組成物を用いて電気絶縁処理されてなる電気機器に関する。
本発明は電気機器絶縁処理用樹脂組成物に関し、更に詳しくは、モータ、トランスなどの電気機器絶縁処理の作業性を向上させる為に、一液型、低粘度、短時間硬化を可能とし、更に、耐湿性を向上させる電気機器絶縁処理用樹脂組成物に関する。
【０００２】
【従来の技術】
モータ、トランス等の電気機器は、鉄コアの固着または防錆、コイルの絶縁または固着等を目的として、電気絶縁用樹脂組成物で処理されている。電気絶縁用樹脂組成物としては、固着性、硬化性、電気絶縁性などのバランスに優れたエポキシ樹脂組成物が広く用いられている。
近年の電気機器は、小型・軽量化、高出力化が進んだため、運転時に過大な負荷により発生する熱量が増大し、電気機器の運転時の温度が上昇する傾向があるため、使用される各材料は、より耐熱性及び熱放散性が高いものが求められるようになってきた。特に、屋外で使用される電気機器は、耐熱性が高くなる事に伴い、耐湿性も強く要求されるようになってきた。回転機器の高速化・高出力化に伴い、特にモータの回転子については、耐湿後の固着性がより強く要求されるようになってきた。
【０００３】
また、近年の電気絶縁処理工程は、環境対応の観点から、省エネルギー化が要求されてきており、短時間硬化タイプの樹脂組成物がより強く求められるようになってきた。
更に、作業性の観点から、従来の二液型の樹脂組成物を用いる場合、絶縁処理設備として定量ポンプ及び混合機が必要である為、樹脂組成物の形態としては一液型が望ましい。加えて、常温における粘度が高い場合、絶縁処理時の取扱いが困難である為、樹脂組成物の温度を上げて粘度を下げる為の加温設備が必要となる為、樹脂組成物の粘度は５Ｐａ・ｓ以下が望ましく、２Ｐａ・ｓ以下がより望ましい。
【０００４】
【発明が解決しようとする課題】
電気絶縁用樹脂組成物において、近年の要求性能を満足すべく、耐湿後の固着性及び硬化性が良好で、且つ、一液型で粘度が低い、電気絶縁用樹脂組成物が要求されるようになった。
耐湿後の固着性及び硬化性が良好で、且つ、一液型で粘度が低い電気絶縁用樹脂組成物及びこの電気絶縁用樹脂組成物を用いて電気絶縁処理されてなる電気機器を提供するものである。
【０００５】
【課題を解決するための手段】
本発明は、
（Ａ）芳香族系多官能エポキシ樹脂 ５０〜９５重量部
（Ｂ）エチレングリコールジグリシジルエーテル ５〜５０重量部
（Ｃ）ジシアンジアミド １〜２０重量部
（Ｄ）イミダゾール化合物 ０．１〜１０重量部
を含有してなる電気機器絶縁処理用樹脂組成物に関する。更に上記記載の電気絶縁用樹脂組成物を用いて電気絶縁処理されてなる電気機器
【０００６】
【発明の実施の形態】
本発明者らは鋭意検討の結果、芳香族系多官能エポキシ樹脂、エチレングリコールジグリシジルエーテル、ジシアンジアミド、イミダゾール化合物を用いる事によって、耐湿後の固着性及び硬化性が良好で、一液型である為、絶縁処理設備の簡素化が可能で、且つ、粘度が低い為、絶縁処理時の作業性が良好となる事を見出した。
本発明に用いられる（Ａ）成分の芳香族系多官能エポキシ樹脂は、一分子内にグリシジル基を２個以上有する芳香族系エポキシ樹脂である。
芳香族系多官能エポキシ樹脂には制限が無く、例えば、ビスフェノールＡ型エポキシ樹脂、ビスフェノールＦ型エポキシ樹脂、ブロム化ビスフェノールＡ型エポキシ樹脂、ノボラック型エポキシ樹脂等がある。
【０００７】
本発明に用いられる（Ｄ）成分のイミダゾール化合物は、イミダゾール基を有する化合物の他に、トリアジン類、イソシアヌル酸付加物が含まれる。例えば、２−メチルイミダゾール、１−シアノエチル−２−メチルイミダゾール、１−シアノエチル−２−ウンデシルイミダゾリウムトリメリテイト、２,４−ジアミノ−６−（２'−ウンデシルイミダゾリル）−エチル−ｓ−トリアジン、２−フェニルイミダゾールイソシアヌル酸付加物、２−フェニル−４−メチル−５−ヒドロキシメチルイミダゾール等が挙げられる。
【０００８】
また、必要に応じて、（Ａ）（Ｂ）（Ｃ）（Ｄ）を混合させた樹脂組成物に、二酸化ケイ素、水酸化アルミニウム、ケイ酸カルシウム等の無機充填剤を混合しても良い。
本発明の樹脂組成物はエアコン用ファン、発電機、扇風機、洗たく機等のコンデンサーモートル、テレビ、ステレオ、コンパクトディスクプレーヤー等の電源トランス等の電気機器の絶縁処理に適用される。
【０００９】
【実施例】
以下実施例により本発明を説明する。下記例中の部は、重量部を意味する。
実施例１
三井石油化学（株）製 Ｒ１４０ ８０重量部、共栄社化学（株）製 エポライト４０Ｅ ２０重量部、ジシアンジアミド ８重量部、２−フェニル−４−メチル−５−ヒドロキシメチルイミダゾール ２重量部を撹拌混合して電気絶縁用樹脂組成物を調製した。
【００１０】
実施例２
三井石油化学工業（株）製 Ｒ１４０ ８０重量部、共栄社化学（株）製 エポライト４０Ｅ ２０重量部、ジシアンジアミド ８重量部、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 ２重量部を撹拌混合して電気絶縁用樹脂組成物を調製した。
【００１１】
比較例１
三井石油化学（株）製 Ｒ１４０ １００重量部、ジシアンジアミド ８重量部、２−フェニル−４−メチル−５−ヒドロキシメチルイミダゾール ２重量部を撹拌混合して電気絶縁用樹脂組成物を調製した。
比較例２
三井石油化学（株）製 Ｒ１４０ ８０重量部、共栄社化学（株）製 エポライト４００Ｅ ２０重量部、ジシアンジアミド ８重量部、２−フェニル−４−メチル−５−ヒドロキシメチルイミダゾール ２重量部を撹拌混合して電気絶縁用樹脂組成物を調製した。
【００１２】
得られた電気絶縁用樹脂組成物について、
（１）粘度
（２）せん断接着力
初期
８０℃９０％ＲＨ、８００ｈ後
を調べた。その結果を表１に示す。
【００１３】
【表１】
粘度：ＪＩＳ Ｃ ２１０５に準じて測定した。
せん断接着力：図１のように、ＳＰＣＣ試験片（１０×１５０×１ｍｍｔ）２枚で、樹脂組成物をはさみ、クリップで止めて、１８０℃１０分硬化を行い、１８０℃雰囲気で引張り速度５ｍｍ／ｍｉｎでオートグラフを用いてせん断接着力を測定した。
絶縁破壊の強さ：厚さ２ｍｍの注型板に樹脂組成物を流し込み、１２０℃２ｈ＋１８０℃１ｈ硬化を行い、得られた注型板を用いて、ＪＩＳ Ｃ ２１０５に準じて試験を行った。
【００１４】
【発明の効果】
本発明になる電気機器絶縁用樹脂組成物は、電気機器に含浸させて絶縁処理することによって、耐湿後の固着性及び硬化性が良好で、一液型である為、絶縁処理設備の簡素化が可能で、且つ、粘度が低い為、絶縁処理時の作業性が改善できる。
【図面の簡単な説明】
【図１】 本発明のせん断接着力試験方法の概略図。
【符号の説明】
１．ＳＰＣＣ試験片
２．クリップ
３．樹脂組成物[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a resin composition for electrical insulation and an electrical device, and more specifically, an electrical insulation resin composition mainly composed of an aromatic polyfunctional epoxy resin, ethylene glycol diglycidyl ether, dicyandiamide, and an imidazole compound, and the electrical The present invention relates to an electrical device that is electrically insulated using a resin composition for insulation.
The present invention relates to a resin composition for electrical equipment insulation treatment. More specifically, in order to improve the workability of electrical equipment insulation treatment for motors, transformers, etc., one-pack type, low viscosity, and short-time curing are possible. The present invention relates to a resin composition for electrical equipment insulation treatment that improves moisture resistance.
[0002]
[Prior art]
Electrical devices such as motors and transformers are treated with an electrical insulating resin composition for the purpose of fixing or rust prevention of iron cores, insulation or fixing of coils, and the like. As the resin composition for electrical insulation, an epoxy resin composition excellent in balance such as adhesion, curability and electrical insulation is widely used.
In recent years, electrical devices have become smaller, lighter, and higher in output, so the amount of heat generated by excessive loads during operation tends to increase and the temperature during operation of electrical devices tends to rise. Each material has been required to have higher heat resistance and heat dissipation. In particular, electrical equipment used outdoors has been strongly required to have moisture resistance as heat resistance has increased. Along with the increase in speed and output of rotating equipment, in particular, with respect to the rotor of a motor, there has been a strong demand for adhesion after moisture resistance.
[0003]
Further, in recent electrical insulation treatment steps, energy saving has been demanded from the viewpoint of environmental friendliness, and a short-time curing type resin composition has been strongly demanded.
Furthermore, from the viewpoint of workability, when a conventional two-pack type resin composition is used, a metering pump and a mixer are required as insulation processing equipment, and therefore the one-pack type is desirable as the form of the resin composition. In addition, since the handling at the time of insulation treatment is difficult when the viscosity at normal temperature is high, a heating facility for raising the temperature of the resin composition and lowering the viscosity is necessary, so the viscosity of the resin composition is 5 Pa. · S or less is desirable, and 2 Pa · s or less is more desirable.
[0004]
[Problems to be solved by the invention]
In order to satisfy the recent required performance in the resin composition for electrical insulation, there is a need for a resin composition for electrical insulation that has good adhesion and curability after moisture resistance, and is one-pack type with low viscosity. Became.
A resin composition for electrical insulation having good adhesion and curability after moisture resistance and having a one-component type having a low viscosity, and an electrical device subjected to electrical insulation treatment using the resin composition for electrical insulation It is.
[0005]
[Means for Solving the Problems]
The present invention
(A) Aromatic polyfunctional epoxy resin 50 to 95 parts by weight (B) Ethylene glycol diglycidyl ether 5 to 50 parts by weight (C) Dicyandiamide 1 to 20 parts by weight (D) Imidazole compound 0.1 to 10 parts by weight The present invention relates to a resin composition for electrical equipment insulation treatment. Furthermore, an electrical device that is electrically insulated using the resin composition for electrical insulation described above.
DETAILED DESCRIPTION OF THE INVENTION
As a result of intensive studies, the present inventors have used an aromatic polyfunctional epoxy resin, ethylene glycol diglycidyl ether, dicyandiamide, and an imidazole compound, so that the adhesiveness and curability after moisture resistance are good and one-pack type. Therefore, it has been found that the insulation processing equipment can be simplified and the viscosity is low, so that the workability during the insulation processing is improved.
The aromatic polyfunctional epoxy resin (A) used in the present invention is an aromatic epoxy resin having two or more glycidyl groups in one molecule.
There is no restriction | limiting in an aromatic polyfunctional epoxy resin, For example, there exist bisphenol A type epoxy resin, bisphenol F type epoxy resin, brominated bisphenol A type epoxy resin, novolak type epoxy resin, etc.
[0007]
The imidazole compound of component (D) used in the present invention includes triazines and isocyanuric acid adducts in addition to compounds having an imidazole group. For example, 2-methylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-undecylimidazolium trimellitate, 2,4-diamino-6- (2′-undecylimidazolyl) -ethyl-s -Triazine, 2-phenylimidazole isocyanuric acid adduct, 2-phenyl-4-methyl-5-hydroxymethylimidazole, etc. are mentioned.
[0008]
Moreover, you may mix inorganic fillers, such as a silicon dioxide, aluminum hydroxide, a calcium silicate, with the resin composition which mixed (A) (B) (C) (D) as needed.
The resin composition of the present invention is applied to insulation treatment of electrical equipment such as power transformers such as condenser motors such as air conditioner fans, generators, electric fans, and washing machines, televisions, stereos, and compact disc players.
[0009]
【Example】
The following examples illustrate the invention. The part in the following example means a weight part.
Example 1
80 parts by weight of R140 manufactured by Mitsui Petrochemical Co., Ltd., 20 parts by weight of Epolite 40E manufactured by Kyoeisha Chemical Co., Ltd., 8 parts by weight of dicyandiamide, and 2 parts by weight of 2-phenyl-4-methyl-5-hydroxymethylimidazole were stirred and mixed. A resin composition for electrical insulation was prepared.
[0010]
Example 2
80 parts by weight of R140 manufactured by Mitsui Petrochemical Co., Ltd., 20 parts by weight of Epolite 40E manufactured by Kyoeisha Chemical Co., Ltd., 8 parts by weight of dicyandiamide, 2,4-diamino-6 {2′-methylimidazole- (1) ′} ethyl A resin composition for electrical insulation was prepared by stirring and mixing 2 parts by weight of -s-triazine / isocyanuric acid adduct.
[0011]
Comparative Example 1
100 parts by weight of R140 manufactured by Mitsui Petrochemical Co., Ltd., 8 parts by weight of dicyandiamide, and 2 parts by weight of 2-phenyl-4-methyl-5-hydroxymethylimidazole were stirred and mixed to prepare a resin composition for electrical insulation.
Comparative Example 2
80 parts by weight of R140 manufactured by Mitsui Petrochemical Co., Ltd., 20 parts by weight of Epolite 400E manufactured by Kyoeisha Chemical Co., Ltd., 8 parts by weight of dicyandiamide, and 2 parts by weight of 2-phenyl-4-methyl-5-hydroxymethylimidazole were stirred and mixed. A resin composition for electrical insulation was prepared.
[0012]
About the obtained resin composition for electrical insulation,
(1) Viscosity (2) Shear adhesive strength Initial 80 ° C. 90% RH, after 800 h was examined. The results are shown in Table 1.
[0013]
[Table 1]
Viscosity: Measured according to JIS C 2105.
Shear adhesive strength: As shown in FIG. 1, two SPCC test pieces (10 × 150 × 1 mm t ) are sandwiched between the resin compositions, fixed with clips, cured at 180 ° C. for 10 minutes, and pulled at 180 ° C. atmosphere. The shear adhesive force was measured using an autograph at 5 mm / min.
Strength of dielectric breakdown: The resin composition was poured into a casting plate having a thickness of 2 mm, cured at 120 ° C. for 2 hours and 180 ° C. for 1 hour, and the obtained casting plate was used for testing according to JIS C 2105.
[0014]
【The invention's effect】
The resin composition for insulating electrical equipment according to the present invention is impregnated in an electrical equipment for insulation treatment, so that it has good adhesion and curability after moisture resistance and is a one-component type. In addition, since the viscosity is low, the workability during the insulation process can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic view of a shear adhesion test method of the present invention.
[Explanation of symbols]
1. 1. SPCC test piece Clip 3. Resin composition
Claims (2)
（Ｂ）エチレングリコールジグリシジルエーテル ５〜５０重量部
（Ｃ）ジシアンジアミド １〜２０重量部
（Ｄ）イミダゾール化合物 ０．１〜１０重量部
を含有してなる電気機器絶縁処理用樹脂組成物。(A) Aromatic polyfunctional epoxy resin 50 to 95 parts by weight (B) Ethylene glycol diglycidyl ether 5 to 50 parts by weight (C) Dicyandiamide 1 to 20 parts by weight (D) Imidazole compound 0.1 to 10 parts by weight A resin composition for electrical equipment insulation treatment, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002155952A JP4006751B2 (en) | 2002-05-29 | 2002-05-29 | Resin composition for electrical insulation and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002155952A JP4006751B2 (en) | 2002-05-29 | 2002-05-29 | Resin composition for electrical insulation and electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003342355A JP2003342355A (en) | 2003-12-03 |
| JP4006751B2 true JP4006751B2 (en) | 2007-11-14 |
Family
ID=29772351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002155952A Expired - Fee Related JP4006751B2 (en) | 2002-05-29 | 2002-05-29 | Resin composition for electrical insulation and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4006751B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5273447B2 (en) * | 2008-05-27 | 2013-08-28 | 日立化成株式会社 | Resin composition for electrical insulation treatment and electrical equipment using the same |
| KR102279438B1 (en) * | 2017-12-01 | 2021-07-19 | 엘에스일렉트릭(주) | Epoxy resin composition and transformer comprising the same |
-
2002
- 2002-05-29 JP JP2002155952A patent/JP4006751B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003342355A (en) | 2003-12-03 |
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