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Curing of Epoxy Resins Based on Diglycidyl 2, 6-naphthalenedicarboxylate and Properties of Cured Products
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- NISHIYAMA Koji
- Central Research Laboratory, General Sekiyu K.K.
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- TAKATA Toshikazu
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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- ENDO Takeshi
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- 2, 6-ナフタレンジカルボン酸ジグリシジルエステルを用いたエポキシ樹脂の硬化と硬化物の物性
Description
Synthesis of diglycidyl 2, 6-naphthalenedicarboxylate (DE) from 2, 6-naphthalene-dicarboxylic acid, its curing with several curing agents, and properties of the cured products are described. Synthesis of DE was carried out by the reaction of 2, 6-naphthalene-dicarboxylic dichloride with glycidol (90% yield, m.p. 143-144°C). DE was mixed with one of the curing agents (0.6-1.6 equivalents), and the mixture was heated at a temperature above the melting point of DE (150-220°C) to give the corresponding cured products. The products cured with trimellitic anhydride (TMA) or diaminodiphenylmethane (DDM) as a curing agent had good toughness and Tgs. To estimate the effect of introducing naphthalene moiety into epoxy resins, the properties of the cured products from DE were compared under the same conditions with those from diglycidylterephthalate (TE) and from diglycidylether of bisphenol A (DGEBA). The glass transition temperature (Tg) of the cured products of DE/DDM system was 200°C, showing 20°C higher than that of TE/DDM or DGEBA/DDM. Further, Tg of DE/TMA was 214°C showing 10°C higher than that of TE/TMA or DGEBA/TMA. In summary, the cured products from DE were superior to those from DGEBA in the properties such as flexural strength, flexural modulus, and water absorption.
Journal
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- Journal of Network Polymer,Japan
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Journal of Network Polymer,Japan 17 (1), 7-12, 1996
Japan Thermosetting Plastics Industry Association
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Details 詳細情報について
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- CRID
- 1390001205088977280
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- NII Article ID
- 130003389069
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed