絶縁用封止材として使われるエポキシ樹脂硬化反応の解析: 第3報 エポキシ樹脂の界面の段階的接着モデルによる応力-ひずみ解析
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In order to carry out a curing reaction analysis of epoxy resin used as electrical insulators, the authors have previously reported kinematic and viscoelastic analyses in parts I and II of this series of reports. The space between two concentric iron cylinders was filled with epoxy resin and the circumferential strain on the outer iron cylinder surface was measured in part II. The results of a finite element model gave good agreement with the results of measurements during gelation. However, the model results showed poor agreement before gelation, probably because of the assumption of full adhesion between the epoxy resin and iron cylinders. In order to improve the agreement, two new adhesion models have been proposed for the epoxy-resin interface.1) One model assumes that full adhesion is immediately achieved when the epoxy resin begins to gel. The calculated circumferential strain changes on the outer iron cylinder surface do not give good agreement with experimental values after gel initiation.2) The other model assumes that adhesion is gradually formed as the epoxy resin gels. The calculated circumferential strain changes agree very well with experimental values.These results indicate that adhesion between the epoxy resin and the iron cylinders is gradually formed. The temperature distribution of the epoxy resin during the curing reaction changes little with time. The internal stresses in the epoxy resin goes up because adhesion increases during the gelation process.
- The Japan Society of Polymer Processing = プラスチック成形加工学会の論文
- 2003-02-20
The Japan Society of Polymer Processing = プラスチック成形加工学会 | 論文
- 絶縁用封止材として使われるエポキシ樹脂硬化反応の解析: 第3報 エポキシ樹脂の界面の段階的接着モデルによる応力-ひずみ解析
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- 絶縁用封止材として使われるエポキシ樹脂硬化反応の解析: 第2報 エポキシ樹脂の粘弾性構成則と界面完全接着モデルによる応力-ひずみ解析
- 絶縁用封止材として使われるエポキシ樹脂硬化反応の解析: 第4報 エポキシ樹脂の界面の破壊モデルによる応力-ひずみ解析