Synthesis of anisotropic nanoparticles with controlled aspect ratios and their use as a reinforcing filler

具有受控长径比的各向异性纳米粒子的合成及其作为增强填料的用途

• 批准号: 520361-2017
• 负责人: Veinot, Jonathan
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640713
• 关键词: Synthesis; anisotropic; nanoparticles; controlled; aspect

Rubber reinforcing fillers used in the tire industry consist primarily of nano- or micro-particles of carbon blackor silica; these particles are isotropically shaped and consequently uniform in exposing targeted positionaland/or directional properties in a hosting matrix (e.g., rubber). A game-changing advance would result from theintroduction of anisotropic one-dimensional (1-D) nanostructure-based (e.g., nanorods, nanowires, nanofibers)fillers that are expected to show unique size- and directionality-dependent material characteristics. As anexample, mechanical properties of hosting polymer matrix (e.g., Young's Modulus, tensile strength, elongation)are expected to be dependent upon the orientation of filler particles.This project with Michelin Canada aims to establish a practical understanding of how the morphologyinfluences the reinforcement properties of silica fillers when included into rubber-based materials used in themanufacture of tires. To realize this understanding we will develop methods for preparing silica nanorods withappropriate aspect ratios in a controlled fashion and comprehensively characterize them. These materials willbe provided to our industrial partners for testing in rubber composites.

轮胎工业中使用的橡胶加固填充剂主要由碳黑色二氧化硅的纳米或微粒组成；这些颗粒是各向同性形状的，因此在揭示宿主基质（例如橡胶）中的靶向位置/或方向性方面均匀。改变游戏的进步将是由于基于各向异性的一维（1-D）纳米结构（例如纳米棒，纳米线，纳米纤维）填充剂的引入而产生的，这些填充物将显示出独特的尺寸和方向性依赖性依赖性和方向性依赖性材料特征。作为示例，预计托管聚合物矩阵的机械性能（例如Young的模量，拉伸强度，伸长率）将取决于填充颗粒的方向。该项目与Michelin Canada的项目旨在建立对形态上的强化特性的实际理解二氧化硅填充剂将用于轮胎制造中的橡胶基材料。为了实现这种理解，我们将开发出以受控方式以适当的纵横比制备二氧化硅纳米棒的方法，并全面地对其进行表征。这些材料将向我们的工业合作伙伴提供，以在橡胶复合材料中进行测试。