NOVOLAC-BASED EPOXY COMPOUND, PREPARING METHOD THEREOF, COMPOSITION, CURED PRODUCT THEREOF, AND USE THEREOF

摘要

The present invention relates to: a novolac-based epoxy compound having an alkoxysilyl group, whose compound does not require a separate silane coupling agent and exhibits a low coefficient of thermal expansion (CTE) and high glass transition in a synergistic effect, when forming a composite material by curing; a preparing method thereof; and an epoxy composition and cured product comprising the same. According to one mode of the embodiment of the present invention, provided are: a novolac-based epoxy compound having an alkoxysilyl group of chemical formula I-1 to I-4; a method for preparing a novolac-based epoxy compound having an alkoxysilyl group of chemical formula I-1 to I-4 by means of the epoxidation, alkenylation and alkoxysilylation of a novolac-based epoxy compound; a method for preparing a novolac-based epoxy compound having an alkoxysilyl group of chemical formula I-1 to I-4 by means of the epoxidation and alkoxysilylation of a novolac-based epoxy compound; and an epoxy composition comprising a novolac-based epoxy compound having an alkoxysilyl group of chemical formula I-1 to I-4; and provided also is a cured product. A cured product constituted by a composite product of the composition comprising the novolac-based epoxy compound having an alkoxysilyl group of a novel kind according to the present invention has improved chemical bonding efficiency when forming an epoxy composite by means of chemical bonding between the alkoxysilyl groups of the epoxy compound having alkoxysilyl groups, and chemical bonding of a filler with the alkoxysilyl groups in the epoxy compound. Consequently, a low CTE and high glass transition temperature are exhibited. [Reference numerals] (AA) Example 1; (BB) Dimensional change (쨉m); (CC) Temperature (°C)