| 摘要: | 本研究利用纏繞成型法製備纖維複合材料預浸材，以水性聚胺基甲酸酯（water dispersion polyurethane）為基材，玻璃纖維為補強材，討論水性聚胺基甲酸脂應用在纏繞成型法之可行性。實驗中除了比較不同含量填充材的添加對纖維複合材的影響外，還利用三明治結構製備出不同疊層角度及不同碳纖維含量的混成纖維複合材料。另外在熱壓時以不同參數加工，藉由機械性質（抗張強度與模數、剪切力強度、耐磨耗度和硬度）、動態機械性質（DMA）、熱性質（TGA、DSC、TMA）、物理性質及電氣性質（EMI）來探討不同預浸材種類的纖維複合材各項性質的差異，以及找出最佳加工條件參數。
從研究結果得知，SEM下可看出水性聚胺基甲酸酯和纖維間含浸效果良好，具有加工可行性。而預浸材在熱壓加工時以壓力300psi，溫度110℃，時間30min下製備的複合材料擁有最佳機械性質。填充材方面碳酸鈣比高嶺土較能增加複材強度，但過多的添加會使樹脂含量減少導致複材結構變弱，而強度下降。碳纖維含量可明顯提高複材強度和電氣性質。
The aim of this Research is to prepare the WD-PU (water polyurethane) and fiber composites for improving the mechanical properties of the WD-PU/Glass fiber and WD-PU/Glass-Carbon fiber composites.The WD-PU/Glass fiber composites and WD-PU/ Glass-Carbon fiber composites were prepared by filament winding.
This research presents a proprietary filament winding process developed to manufacture WD-PU prepreg . Based on the investigation of the pot life to the resin, the reactivity of the resin and fiber wet-out, it was found that WD-PU shows excellent processability for prepreg . The effect of processing parameter on the mechanical properties of pultruded glass fiber reinforced WD-PU prepregs has been studied .
This study also present a proprietary process developed to manufactur¬e sandwich products. The effect of processing parameters on the mechanical properties of the sandwich products has been studied . P¬rocessin¬g parameters include press pressure , temperatures, time , laminat¬e angle , laminate number , Carbon Fiber Content . The thermal propertie¬s, mechanical properties, Physical properties and morphology of the different composite¬s were investigated through the TGA measurement and DSC measurement , Hardness test ,Tensil¬e strength test , Interlaminer shear strength ( I.L.S.S.）test , Void content test and the scanning electron microscope ( SEM ) , respectively. From the experiment results , pressure is 300psi , temperatures is 110℃, 30 min is the best optimum to manufacture the sand¬wich products. And The Carbon fiber content can improve the mechanical properties . |
