• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >The effect of graphene-nanoplatelets on gelation and structural integrity of a polyvinyltrimethoxysilane-based aerogel
【24h】

The effect of graphene-nanoplatelets on gelation and structural integrity of a polyvinyltrimethoxysilane-based aerogel

机译：石墨烯 - 纳米层对聚乙烯醇三甲氧基硅烷气凝胶凝胶化和结构完整性的影响

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

摘要

Aerogels suffer greatly from poor mechanical properties resulting from their particulate structure. They also experience noticeable pore shrinkage during drying due to their low structural integrity. These shortfalls limit their broad application. To enhance the mechanical properties and improve the structural integrity of silica-based aerogels, graphene nanoplatelets (GnPs), as a nanofiller, were embedded into the solution of polymerized vinyltrimethoxysilane (VTMS) to prepare P-VTMS-based silica/GnP (PE-b-Si/GnP) hybrid aerogel monoliths based on sol–gel synthesis and supercritical drying. The inclusion of GnPs in our polymer-based silica aerogel processes reinforced the nanostructure and suppressed PE-b-Si nanopore shrinkage during supercritical drying, thus acting as an effective anti-shrinkage nanofiller. Accordingly, the GnPs significantly contributed to the PE-b-Si solution's uniform gelation and to the change of the hydrophilic nature to a hydrophobic one even with 1 wt% addition. In this study, the influence of the GnP content on the sol–gel process, structure, and physical properties of PE-based silica aerogels is studied.
机译：Aerogels从其颗粒结构引起的差的机械性能遭受大大痛苦。由于它们的结构完整性低，它们也经历了干燥过程中显着的孔收缩。这些短缺限制了他们广泛的应用。为了增强机械性能并改善基于二氧化硅的气凝胶的结构完整性，将石墨烯纳米片（GNP）作为纳米填充物嵌入聚合的乙烯基三甲氧基硅烷（VTMS）的溶液中以制备P-VTMS基二氧化硅/ GNP（PE-基于溶胶 - 凝胶合成和超临界干燥的B-Si / GNP）混合气凝胶整体。在超临界干燥期间加入纳米结构和抑制PE-B-Si纳米孔的纳米结构和抑制PE-B-Si纳米孔收缩的GNP，从而用作有效的抗收缩纳米填充物。因此，GNP显着导致PE-B-Si溶液的均匀凝胶化和即使添加1wt％的加法，也能够改变亲水性与疏水性。在该研究中，研究了GNP含量对基于PE基二氧化硅气凝胶的溶胶 - 凝胶工艺，结构和物理性质的影响。

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