• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Design, manufacturing and applications of composites >Single-Walled Carbon Nanotubes / Polymer Nanocomposites Microbeams by Means of Ultraviolet-Assisted Direct-Write Assembly
【24h】

Single-Walled Carbon Nanotubes / Polymer Nanocomposites Microbeams by Means of Ultraviolet-Assisted Direct-Write Assembly

机译：单壁碳纳米管/聚合物纳米复合材料通过紫外线辅助直接写入组装

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report the successful fabrication of nanocomposite microbeams by means of ultraviolet-assisted direct-write assembly. The nanocomposite consists of a UV curable resin reinforced by single-walled carbon nanotubes (C-SWNTs). The C-SWNTs were produced by the UV-laser ablation method, physico-chemically purified and dispersed in the polymer matrix using sonication in dichloromethane. The as-grown and purified C-SWNTs were systematically characterized by microRaman and photoelectron spectroscopy. Carboxyl groups were attached to the C-SWNT during the purification procedure. Eight different nanocomposite blends were produced from as-grown and purified C-SWNT at varying concentrations. The UV-assisted direct-write approach consists of the robotically-controlled micro-extrusion of the C-SWNT/polymer nanocomposite under UV exposure. Cylindrical microbeams were deposited in a layer-by-layer mode and in a freeform fabrication fashion in order to achieve a mechanical testing micro-coupon. A comprehensive study under dynamic mechanical analyzer was performed on microrods (diameter (d) of ～200 μm) spanning a distance (L) of 3 mm for an aspect ratio (L/d) of 15. An increase by ～63% in strength and ～47% in modulus is measured for the microbeams using the 0,6wt% purified C-SWNT reinforcement.
机译：我们报告通过紫外线辅助直接写入大会成功制作纳米复合微束。纳米复合材料由单壁碳纳米管（C-SWNT）增强的紫外线固化树脂组成。 C-SWNTs是通过UV激光烧蚀法生产的，经过物理化学纯化，并使用二氯甲烷进行超声处理分散在聚合物基质中。通过显微拉曼光谱和光电子能谱系统地表征了生长和纯化的C-SWNT。在纯化过程中，羧基连接到C-SWNT上。从生长和纯化后的C-SWNT以不同浓度生产八种不同的纳米复合混合物。紫外线辅助直接写入方法包括在紫外线照射下自动控制C-SWNT /聚合物纳米复合材料的微挤出。圆柱形微束以逐层模式和自由形式的制造方式沉积，以实现机械测试的微型优惠券。在动态力学分析仪上对跨度为3的距离（L）为15的长径比（L / d）的微棒（直径（d）〜200μm）进行了全面研究。强度增加了〜63％使用0.6％（重量）的纯C-SWNT增强材料测得的微束的模量约为47％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号