Abstract
Polysiloxanes such as poly-APS and poly-EPS were prepared by the hydrolytic polycondensation of 3-aminopropyl(trimethoxy)silane (APS) and 3-N-2-aminoethylaminopropyl(trimethoxy)silane (EPS) in the nitrogen stream, respectively. Poly-APS or poly-EPS was mixed with bisphenol-A diglycidyl ether (828EL) in methyl ethyl ketone or dichloromethane, and the mixture was subjected to heating to prepare transparent and homogeneous thin films. A coating film was prepared by spincoating on glass and heating to give a pencil hardness of 9H when equivalent mixing was achieved. This hardness value is greater than that obtained using ethylenediamine in place of poly-APS or poly-EPS. The three-point-bending test was applied to the bulk bodies to show a maximum Young's modulus of 199.1 MPa for poly-APS and 322.6 MPa for poly-EPS when equivalent mixing was achieved.
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Gunji, T., Itagaki, S., Kajiwara, T. et al. Preparation and Properties of Siloxane/Epoxy Organic-Inorganic Hybrid Thin Films, Self-Standing Films, and Bulk Bodies. Polym J 41, 541–546 (2009). https://doi.org/10.1295/polymj.PJ2008290
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DOI: https://doi.org/10.1295/polymj.PJ2008290
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