新型含矽氧烷與亞醯胺之四官能基環氧樹脂特性之研究

Abstract

本研究以分子結構設計方式，合成含矽氧烷與亞醯胺之四官能基環氧樹脂Ⅲ。將商用環氧樹脂Tetraglycidyl m-xylenediamine(GA-240)及含矽氧烷與亞醯胺之四官能基環氧樹脂與硬化劑依不同當量比例(1/0/1；0.95/0.05/1；0.9/0.1/1；0.85/0.15/1；0.8/0.2/1)混合並交聯，由這些不同的配方比例研究商用環氧樹脂的改質效果。

以FT-IR研究其交聯行為，以動態DSC探討其動力學，用TGA、TMA、DMA進行熱機械性質分析。研究結果顯示改質後的材料其硬化反應所需之活化能較單純GA-240為低，推測GA-240受四官能基epoxy所含三級胺的催化所致。硬化後材料較為柔韌可能係受到矽氧烷的影響，並且保有相當高的玻璃轉移溫度與良好的熱性質。

This research is devoted to synthesize tetrafunctional epoxy containing siloxane and imide groups (Ⅲ) by way of molecular design. Commercial tetraglycidyl meta-xylenediamine(GA-240)/Ⅲ/MDA in various equivalent ratios of cured to 1/0/1，0.95/0.05/1，0.9/0.1/1，0.85/0.15/1 and 0.8/0.2/1 were mixed and study the property improvement for the commercial epoxy GA-240.

Curing behavior was studied with FT-IR. Kinetics analysis was studied with dynamic DSC. Thermal mechanical properties were measured with TGA，TMA and DMA. Kinetics study indicated that modification of epoxy resins has lower curing activation energy than GA-240 component, presumably catalyzed by the 3。amide meeting in Ⅲ.These cured materials were generally toughened due to the presence of siloxane group in Ⅲ.While they still showed high glass transition temperature and good thermal properties.