聚乙烯醇/醋酸乙烯-乙烯共聚合物之水性樹脂纖維複合材料研究

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Title:	聚乙烯醇/醋酸乙烯-乙烯共聚合物之水性樹脂纖維複合材料研究
Authors:	唐偉傑
Contributors:	化學工程與材料工程學系
Keywords:	聚乙烯醇 polyvinyl alcohol 醋酸乙烯-乙烯共聚合物 ethylene-vinyl actate copolymer 纏繞法 winding method 預浸料 prepreg 纖維 fiber 複合材料 composite materials 三明治結構 sandwich structure
Date:	2012
Issue Date:	2012-10-11 09:56:18 (UTC+8)
Abstract:	本研究利用纏繞成型法製備纖維複合材料預浸材，以聚乙烯醇/ 醋酸乙烯-乙烯共聚合物之水性樹脂為基材，玻璃纖維與碳纖維為補強材，討論EVA/PVA應用在纏繞成型法之可行性。實驗中除了比較不同百分比填充材料的添加對纖維複合材料的影響外，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二次加工，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EVA/PVA與不同纖維複合材料的特性，以及找出最佳實驗加工條件參數。在SEM下觀察到的EVA/PVA附著在纖維上的狀況良好，尤其將黏度控制在500cp下最佳，顯示了再次加工的可行性，而在預浸材在溫度80℃維持壓力在500psi製作出來的試片擁有最佳的短樑層間剪力強度（I.L.S.S），在填充材料上添加高嶺土能增加部分機械性質與熱性質，但是添加過多，會使EVA/PVA間黏度降低，與纖維黏著情況變差，導致強度降低。碳纖維可提升高分子複合材料的結構強度。關鍵字：聚乙烯醇/ 醋酸乙烯-乙烯共聚合物，纏繞法，預浸料，纖維，複合材料，三明治結構。 In this study, prepared by winding fiber composite prepreg material to waterborne dispersion polyvinyl acetate, for the substrate, the glass fiber and carbon fiber reinforced materials to discuss the EVA/PVA winding method used in the feasibility. In addition to comparing different experiments, the percentage of filler addition on the impact of fiber composite materials, but also use laminated sandwich structure prepared by different perspectives and different carbon fiber content of the hybrid fiber composite materials. In addition, when the different parameters in the hot processing, by the mechanical properties, dynamic mechanical properties, thermal properties, physical properties and to investigate the electrical properties of PVA with different properties of fiber composites, and to identify optimal processing conditions parameters. Observed in the SEM to the EVA/PVA attached to the fiber in good condition, particularly in the 500cp viscosity control under the best, show the feasibility of processing, and in the prepreg material to maintain the pressure in the temperature of 90 ℃ at 500 psi specimens produced has the best short be am Inter laminar shear strength(I.L.S.S.), add the filling material kaolin can increase the part of the mechanical and thermal properties, but adding too much viscosity will increase between EVA/PVA, and fiber adhesion conditions deteriorate, resulting in reduced strength. Carbon fiber composite materials can enhance the structural strength, The different layers and can enhance the mechanical properties. Keywords:polyvinyl alcohol/ethylene-vinyl actate copolymer, winding method, prepreg, fiber, composite materials, sandwich structure.
Appears in Collections:	[Department of Chemical & Materials Engineering] thesis

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