RESEARCH ARTICLE

Studies on the reactivity of epoxy/polyol/isocyanate blend resins and the properties of epoxy/polyurethane composites

Ya-Shiuan Lee

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Investigation (equal), Methodology (equal), Resources (equal), Software (equal), Writing - original draft (equal)

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Wen-Jau Lee,

Corresponding Author

Wen-Jau Lee

[email protected]

orcid.org/0000-0001-6244-2873

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Correspondence

Wen-Jau Lee and Yi-Chun Chen, Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan.

Email: [email protected] and [email protected]

Contribution: Conceptualization (lead), Data curation (equal), Formal analysis (equal), Funding acquisition (lead), Investigation (equal), Methodology (equal), Project administration (lead), Resources (equal), Software (equal), Supervision (lead), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (lead)

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Yi-Chun Chen,

Corresponding Author

Yi-Chun Chen

[email protected]

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Correspondence

Wen-Jau Lee and Yi-Chun Chen, Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan.

Email: [email protected] and [email protected]

Contribution: Conceptualization (equal), Data curation (equal), Investigation (equal), Methodology (equal), Project administration (supporting), Resources (equal), Validation (equal), Writing - original draft (supporting), Writing - review & editing (supporting)

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Ya-Shiuan Lee,

Ya-Shiuan Lee

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Search for more papers by this author

Wen-Jau Lee,

Corresponding Author

Wen-Jau Lee

[email protected]

orcid.org/0000-0001-6244-2873

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Correspondence

Wen-Jau Lee and Yi-Chun Chen, Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan.

Email: [email protected] and [email protected]

Search for more papers by this author

Yi-Chun Chen,

Corresponding Author

Yi-Chun Chen

[email protected]

Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan

Correspondence

Wen-Jau Lee and Yi-Chun Chen, Department of Forestry, National Chung-Hsing University, Taichung City, Taiwan.

Email: [email protected] and [email protected]

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First published: 09 November 2022

https://doi.org/10.1002/app.53339

Citations: 1

Funding information: Ministry of Science and Technology, Grant/Award Number: NSC 104-2313-B-005-029-MY3

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Abstract

Epoxy resin (ER) is one of the most widely used synthetic resins, and the improvement of its toughness is an important issue. In this study, Epon 828 is used as ER resin, polytetramethylene ether glycol (PTMG) and liquefied wood (LW) are used as polyol, and IPDI, H₁₂-MDI, Desmodur N, and Desmodur L are used as isocyanate. The influence of polyurethane resin (PU) composition on the reactivity of ER/polyol/isocyanate blended resin and the properties of ER/PU composite are investigated. The results show that the mixture of ER/PTMG/IPDI has greater reactivity, followed by ER/PTMG/Desmodur N, while ER/PTMG/Desmodur L has lower reactivity. In the structure of ER/PU blended resin composites, ER and PU resins not only form a physical interpenetrating structure, but also undergo a copolymerization crosslinking reaction. The modulus of elasticity of ER/PU composites prepared with trifunctional Desmodur L and Desmodur N is greater than that of bifunctional IPDI and H₁₂-MDI, while those with LW as polyol is greater than that of PTMG as the raw material.

Open Research

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Volume140, Issue3

January 15, 2023

e53339

Studies on the reactivity of epoxy/polyol/isocyanate blend resins and the properties of epoxy/polyurethane composites

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Studies on the reactivity of epoxy/polyol/isocyanate blend resins and the properties of epoxy/polyurethane composites

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Open Research

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