| 摘要: | 本研究計畫旨在探討玻璃纖維強化乙烯酯拉擠成型奈米複合材料之製備。利用乙烯酯預聚合物添加奈米無機填充材(奈米雲母、奈米氧化鋁)為樹脂基材、玻璃纖維為強化材來進行拉擠成型加工，藉變數之調整來控制樹脂基材之分子量與黏度，在將樹脂基材之預聚合物經特別設計之拉擠成型設備，藉助高分子反應動力學、熱傳模擬及複合材料測試方法，配合各種儀器及電子計算機模擬，多方面探討以尋求最適當之基材樹脂配方與加工條件，以製作機械性質優異且耐燃、耐溫性佳之拉擠成型奈米複合材料。本計畫分二年執行，主要目標如下：第一年：拉擠成型中樹脂基材反應動力學與奈米複合材料在模具中熱傳模擬之研究 1. 樹脂基材(乙烯酯＋奈米無機填充材)DSC動態狀況下之掃描分析。 2. 探討樹脂基材於拉擠成型加工時之反應動力學，尋找合適之反應動力學模式，求取動力學參數，深入瞭解反應機構。 3. 配合電子計算機模擬和數學模式，探討在拉擠成型加工過程中，奈米複合材料(樹脂基材加纖維)在模具中之熱傳問題，以建立拉擠成型加工之模式。 4. 以實驗值來印證理論模式，以尋求最適當之拉擠成型理論數學模式。第二年：拉擠成型中加工可行性評估與最佳加工參數尋求之研究 1. 探討樹脂基材預聚合物之加工可行性：樹脂基材黏度與溫度之關係，樹脂基材操作時間，樹脂基材反應性，樹脂基材與纖維形態學之探討。 2. 探討樹脂基材配方對拉擠成型加工條件與奈米複合材料性質之影響。 3. 尋求在拉擠成型過程中最佳之加工參數，包括拉擠速度、模具溫度、後硬化溫度與時間等。 4. 探討奈米無機填充材種類和含量、玻璃纖維含量等對拉擠成型奈米複合材料性質之影響。 5. 製造優異性質（耐燃、耐溫、耐腐蝕、耐摩耗、高強度等）之拉擠成型奈米複合材料。
This project investigates a proprietary processes to manufacture glass fiber reinforced vinyl ester nanocomposites by pultrusion. To utilize vinyl ester prepolymer with nanoparticles (nano-mica, nano-Al2O3) as matrices, glass fiber as reinforcements for pultrusion. By controlling the molecular weight, viscosity of matrices and through the self-designed pultrusion facility. The matrices were used directly and polymerized in the pultrusion die. It provides a new concept for in-situ pultrusion. To study the process feasibility of resin as polymeric matrix to fabricate pultruded glass fiber composites, and to study the processing parameters by polymer kinetic analysis, mechanical properties and thermal properties of composites. This project must be finished about two years, including the following objects: The first year projects will include the following subjects: 1. To study the DSC thermograms of matrices(vinyl ester plus nanoparticles) by dynamic scanning. 2. To investigate the kinetic of matrices during pultrusion process in order to obtain the suitable model, kinetic constants and reaction mechanism. 3. From the computer program and mathematical model to study the heat transfer of nanocomposites in the die during pultrusion process, So we can establish the model of pultrusion process. 4. To search the optimum model by using experimental data to confirm theoretical model. The second year projects will include the following subjects: 1. To study the process feasibility of matrices: the relation between viscosity and temperature of matrices, pot life of matrices, reactivity of matrices, and morphology between matrices and fiber. 2. To study the effects of matrices formulation on pultruded processing condition and its nanocomposites. 3. To seek the optimum processing parameters for pultrusion, including pulling rate, die temperature, and postcure temperature and time, etc. 4. To investigate the effects of nanofiller type and content, and glass fiber content on nanocomposite properties. 5. To manufacture the high performance (flame resistance, heat resistance, corrosion resistance, abrasion resistance, high strength etc.) nanocomposites by pultrusion. |
