添加不同種類無機層狀材料之乙烯基奈米複合材料之製備及性質探討

Preparation and Characterization of Vinyl Ester nanocomposites with Different Types of Inorganic Layered Materials

周冠任(Guan-Jen Chou)

指導教授 ： 蔡宗燕

中原大學/理學院/化學研究所/碩士(2013年)

https://doi.org/10.6840/cycu201300895

摘要

本研究以離子置換法製備含不同改質劑插層量之改質型天然黏土CL120-K2(0.5)、CL120-K2(1.5)與共沉澱水熱法製備人工合成無機層狀材料MgAl LDH及一步合成法製備改質型人工層狀材料MgAl LDH-DMSI，利用廣角X光繞射儀（Wide Angle X-ray Diffraction, WAXRD）觀察無機層材之層間距變化，傅立葉轉換紅外線光譜儀（Fourier Transform Infrared, FT-IR）鑑定改質型無機材料層間之有機與無機的官能基。以熱重分析儀（ThermoGravimetry Analyzer, TGA）定量分析改質無機層狀材料中的改質劑的插層量。並利用超聲波震盪法（Ultrasonication method）及原位聚合法(In-situ polymerization)製備乙烯基樹脂/無機層材奈米複合材料，再利用手積法（Hand-lay up）將其製備為玻璃纖維/乙烯基樹脂奈米複合材料模板。
在熱性質方面，利用熱重分析儀（Thermal Gravimetric Analyzer, TGA）測量材料之熱裂解溫度T5d，以超聲波震盪法製備VE-CL120-K2（0.5）-3wt%提升21.1 ℃（319.3℃→340.4℃），以原位聚合法製備VE-CL120-K2（1.5）-3wt%提升26.8℃（319.3℃→346.1℃），以超聲波震盪法製備VE-MgAl LDH-DMSI-1 wt%提升9.0 ℃（319.3 ℃→328.3℃），以原位聚合法製備VE-MgAl LDH- DMSI-1wt%提升22.5℃（319.3℃→341.8℃）；在力學性能方面，利用動態機械分析儀（Dynamic Mechanical Analyzer，DMA）測量材料之儲存模數（Strorage Modulus)，以超聲波震盪法製備VE-CL120-K2（0.5）-0.5 wt%提升15 %（1684 MPa→1930 MPa），以原位聚合法製備VE- CL120-K2（1.5）-0.5 wt%提升45 %（1684 MPa→2435 MPa），以超聲波震盪法製備VE-MgAl LDH-DMSI-1wt%提升25 %（1684 MPa→2097 MPa），以原位聚合法製備VE-MgAl LDH-DMSI-1 wt%提升54 %（1684 MPa→2586 MPa）；在耐老化方面，經老化之後VE（商品料），儲存模數降低13 %（1684 MPa→1463 Mpa），以原位聚合法製備VE-CL120-K2（1.5）-0.5wt%提升11 %（1684 MPa→1868 MPa），VE-MgAl LDH-DMSI-1wt%提升31 %（1684 MPa→2207 MPa）；FRP複材之力學性能方面，以原位聚合法製備VE-CL120 -K2（1.5）-0.5wt%抗拉強度提升27 %（269 MPa→341 MPa），VE-MgAl LDH-DMSI-1wt%抗拉強度提升31 %（269 MPa→351 MPa）。
由上列數據得知，利用奈米混成複材之概念可以有效提升乙烯基樹脂奈米複合材料之力學性能、熱穩定性、耐老化性質。

關鍵字

乙烯基指樹脂 ； 蒙托土 ； 奈米複合材料

並列摘要

There are two inorganic layered materials, which one is modified clay which contains two different amounts of intercalant by ion exchange method, and the other is layer double hydroxide modified by coprecipitation treatment and hydrothermal method. The inorganic layered materials could be increased the compatibility with the clay platelets and the vinyl ester matrix. The characteristics of modified inoganic layerd materials identified by Wide Angle X-ray Diffraction (WAXRD) for the d-spacing between the layers. Fourier Transform Infrared (FTIR) point out the organic and inoganic function groups in the modified inorganic layerd materials, and thermogravimetric analyzer (TGA) used for the theoretical intercalation capacity of the modified agent in the clay minerals. By using ultrasonication method and in-situ polymerization, the vinyl ester/inorganic layered materials could be prepared nanocomposite, then followed by hand-lay up method to prepare the fibre-reinforced plastic/vinyl ester nanocomposites.
In the aspect of thermal properties, materials pyrolysis temperature T5d can be measured by TGA (Thermal Gravimetric Analyzer), VE-CL120-K2 (0.5)-3wt% which prepared by ultrasonication method would improve 21.1 ℃ (from 319.3 ℃ to 340.4℃). VE-CL120-K2 (1.5)-3wt% which prepared by in-situ polymerization improved 26.8℃ (from 319.3℃ to 346.1℃), VE-MgAl LDH-DMSI-1 wt% which prepared by ultrasonication method improved 9.0℃ (from 319.3℃ to 328.3℃). And VE-MgAl LDH-DMSI -1wt% which prepared by in situ polymerization improved 22.5℃ (from 319.3℃ to 341.8℃). As to mechanical properties, storage modulus can be measured by DMA (Dynamic Mechanical Analyzer), VE-CL120-K2 (0.5) -0.5 wt% which prepared by ultrasonication method improved 15% (from 1684 MPa to 1930 MPa). VE-CL120-K2 (1.5) -0.5 wt% which prepared by in in-situ polymerization improved 45% (from 1684 MPa to 2435 MPa), and VE-MgAl LDH -DMSI-1wt% which prepared by ultrasonication method improved 25% (from 1684 MPa to 2097 MPa). Also VE-MgAl LDH-DMSI-1 wt% which prepared by in-situ polymerization improved 54% (from 1684 MPa to 2586 MPa). In the study of aging resistance, storage modulus of VE decreased 13% after aging (from 1684 MPa to 1463 Mpa), and VE-CL120-K2 (1.5)-0.5wt% which prepared by in situ polymerization enhances 11% (from 1684 MPa to 1868 MPa). VE-MgAl LDH-DMSI-1wt% also enhances 31% (from 1684 MPa to 2207 MPa). The mechanical properties of FRP, tensile strength of VE-CL120-K2 (1.5)-0.5wt% which prepared by in-situ polymerization increases 27% (from 269 MPa to 341 MPa), the tensile strength of VE-MgAl LDH-DMSI-1wt% enhances 31% (from 269 MPa to 351 MPa).
Followed by this research, applying the concept of nano-hybrid composites can effectively enhance the mechanical properties, thermal stability and aging resistance of vinyl ester resin.

並列關鍵字

montmorillonite ； Vinyl ester ； nanocomposites

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