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增强填料主要由炭黑或二氧化硅的纳米或微米颗粒组成;这些颗粒是各向同性形状的，因此在宿主基质（例如，橡胶）。一个改变游戏规则的进步将来自于引入基于各向异性一维（1-D）纳米结构（例如，纳米棒、纳米线、纳米纤维）填料，其预期显示出独特的尺寸和方向性依赖的材料特性。作为一个例子，宿主聚合物基质的机械性能（例如，杨氏模量、拉伸强度、伸长率）预计将取决于填料颗粒的取向。该项目与米其林加拿大合作，旨在建立一个实际的理解，即当包含在轮胎制造中使用的橡胶基材料中时，二氧化硅填料的形态如何影响其增强性能。为了实现这一理解，我们将开发以可控方式制备具有适当纵横比的二氧化硅纳米棒的方法，并对其进行全面表征.这些材料将提供给我们的工业合作伙伴，用于橡胶复合材料的测试。