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首页> 外文会议>Proceedings of the 3rd Pan American materials congress >Thermo-mechanical Properties of Waterborne Acrylate Hybrid Nanocomposites
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Thermo-mechanical Properties of Waterborne Acrylate Hybrid Nanocomposites

机译：水性丙烯酸酯杂化纳米复合材料的热机械性能

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摘要

Waterborne acrylate hybrid nanocomposites containing 1 wt% nanoparticles were synthesized by in situ polymerization using SiO_2 and Fe_2O_3 nanoparticles. The synthesized latex hybrids were characterized by thermogravi-metric analysis, uniaxial tension, nano-indentation and scanning electron microscopy (SEM). Films drawn from the latex exhibited excellent optical transparency and no evidence of aggregation was detected by SEM and X-ray energy dispersive spectroscopy (EDS) analysis confirmed the presence of silica and iron throughout the films. The thermal properties showed a decrease of the glass transition temperature in the presence of Fe_2O_3 nanoparticles as demonstrated by the dynamic mechanical analysis. The nano-SiO_2 induced significantly higher thermal stability, as decomposition temperatures of the nanocomposites increases by as much as 40 ℃ relative to the neat acrylic. On the other hand, the Young's modulus and hardness of the nanocomposites films decrease about 30 and 65%, denoting a modification of macromolecular dynamic by the SiO_2 and Fe_2O_3 nanoparticles, respectively.
机译：通过SiO_2和Fe_2O_3纳米粒子原位聚合合成了纳米粒子含量为1wt％的水性丙烯酸酯杂化纳米复合材料。通过热重分析，单轴拉伸，纳米压痕和扫描电子显微镜（SEM）对合成的乳胶杂化物进行了表征。由乳胶制成的薄膜表现出极好的光学透明性，并且没有通过SEM检测到聚集的迹象，X射线能量色散光谱（EDS）分析证实了整个薄膜中都存在二氧化硅和铁。动态力学分析表明，在Fe_2O_3纳米粒子存在下，热性能显示玻璃化转变温度降低。相对于纯丙烯酸，纳米SiO_2诱导的热稳定性显着提高，因为纳米复合材料的分解温度提高了40℃。另一方面，纳米复合膜的杨氏模量和硬度降低了约30％和65％，这表明SiO_2和Fe_2O_3纳米颗粒分别改变了大分子动力学。

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  • 来源
  • 会议地点 San Diego(US)
  • 作者

    Mireya Lizbeth Hernandez-Vargas; Ruben Castillo-Perez; Oscar Hernandez-Guerrero; Osvaldo Flores-Cedillo; Bernardo Fabian Campillo-Illanes;

  • 作者单位

    Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 Ciudad de Mexico, Mexico,Posgrado de Ingenieria, Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04519 Ciudad de Mexico, Mexico,Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Av. Universidad s. Col. Chamilpa, 62210 Cuemavaca, Morelos, Mexico;

    Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 Ciudad de Mexico, Mexico,Posgrado de Ingenieria, Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04519 Ciudad de Mexico, Mexico,Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Av. Universidad s. Col. Chamilpa, 62210 Cuemavaca, Morelos, Mexico;

    Facultad de Ciencias Quimicas e Ingenieria, Centra de Investigation en Ingenieria y Ciencias Aplicadas, Universidad Nacional Autonoma de Mexico, Av. Universidad 1001,62209 Cuemavaca, Morelos, Mexico,Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Av. Universidad s. Col. Chamilpa, 62210 Cuemavaca, Morelos, Mexico;

    Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Av. Universidad s. Col. Chamilpa, 62210 Cuemavaca, Morelos, Mexico;

    Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, 04510 Ciudad de Mexico, Mexico;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Acrylate; Nanocomposites; SiO_2; Fe_2O_3; Mechanical properties;

    机译：丙烯酸酯纳米复合材料； SiO_2; Fe_2O_3;机械性能;

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