超高分子量聚乙烯纖維補強聚胺酯改質環氧樹脂之複合材料研究

Abstract

本研究之規劃內容，係引入聚胺酯改質環氧樹脂為基材，並以超高分子量聚乙烯纖維為補強材料，利用纏繞成型法將原料加工成預浸布材料，再以熱壓成型法二次加工成為複合材料，輔以水刀切割成各種測試試片，對其熱性質（熱裂解溫度、灰份及玻璃轉移溫度）、型態學性質（破裂面型態觀察與纖維沾潤樹脂情形）、機械性質（抗張強度、Izod與落垂式衝擊強度、彎曲強度以與剪切強度）與防彈性質等進行分析討論。並進行一系列基材、纖維與樹脂界面性質、纖維補強複合材料性質及複材耐候性質之測試。 本論文之研究程序，共針對四個部分加以討論。 一、聚胺酯改質環氧樹脂之基材研究。 二、超高分子量聚乙烯纖維表面改質研究。 三、超高分子量聚乙烯纖維補強聚胺酯改質環氧樹脂複合材料之研究。 四、超高分子量聚乙烯纖維補強聚胺酯改質環氧樹脂複合材料之耐候性質研究。

The aim of this research is to prepare a series of UHMWPE fiber (Ultra-high molecular weight polyethylene fiber) reinforced PU (Polyurethane) modified DGEBA (Epoxy resin) composites composed of the matrices based on PU and Epoxy resin with the reinforcement by neat, plasma treated and chemical agent modified UHMWPE fibers. The UHMWPE fiber/PU-crosslinked DGEBA composites and the UHMWPE fiber/PU/DGEBA grafted-IPNs composites were manufactured by filament winding and hot-press molding and cutting to various testing specimens with hydraulic power cutting machine. The characterization (FTIR and ATR-FTIR), thermal properties (Glassy- transition temperature and Heat-degrading temperature), mechanical properties (Tensile strength, Izod and Falling weight impact strength, Bending strength, Shear strength and bullet-proof testing) and morphology (Fracture surface and wet-out property) of the matrices and composites were investigated. The weathering properties and durable of the two kinds fiber reinforced composites were characterized via light-exposure apparatus (Xenon-arc type) and the standard practice for performing outdoor accelerated weathering tests. There are four basic parts of this research: 1. Research of the PU modified DGEBA matrix. 2. Research of the surface modification of UHMWPE fiber. 3. Research of the UHMWPE fiber reinforced PU/DGEBA composite. 4. Weathering effect of the UHMWPE fiber reinforced PU/DGEBA composites.