Shachar Michaely Gal, Alhazov Dimitry, Genkin Michael, Buzaglo Matat, Regev Oren
Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
Alliance Tire Company Ltd., Hadera 38100, Israel.
Nanomaterials (Basel). 2021 Nov 12;11(11):3048. doi: 10.3390/nano11113048.
Oil was employed as an 'entrance door' for loading rubber with carbon-based fillers of different size and dimensionalities: 1D carbon nanotubes (CNTs), 2D graphene nanoplatelets (GNPs), and 3D graphite. This approach was explored, as a proof of concept, in the preparation of tire tread, where oil is commonly used to reduce the viscosity of the composite mixture. Rubber was loaded with carbon black (CB, always used) and one or more of the above fillers to enhance the thermal and mechanical properties of the composite. The CNT-loaded system showed the best enhancement in mechanical properties, followed by the CNT-GNP one. Rubber loaded with both graphite and GNP showed the best enhancement in thermal conductivity (58%). The overall enhancements in both mechanical and thermal properties of the various systems were analyzed through an overall relative efficiency index in which the total filler concentration in the system is also included. According to this index, the CNT-loaded system is the most efficient one. The oil as an 'entrance door' is an easy and effective novel approach for loading fillers that are in the nanoscale and provide high enhancement of properties at low filler concentrations.
油被用作“入口”，用于填充不同尺寸和维度的碳基填料的橡胶：一维碳纳米管（CNT）、二维石墨烯纳米片（GNP）和三维石墨。作为概念验证，在制备轮胎胎面时探索了这种方法，在轮胎胎面制备中，油通常用于降低复合混合物的粘度。橡胶填充有炭黑（CB，一直使用）和上述一种或多种填料，以提高复合材料的热性能和机械性能。负载碳纳米管的体系在机械性能方面表现出最佳增强效果，其次是碳纳米管-石墨烯纳米片体系。同时填充石墨和石墨烯纳米片的橡胶在热导率方面表现出最佳增强效果（58%）。通过一个综合相对效率指数分析了各种体系在机械性能和热性能方面的整体增强情况，该指数还包括体系中的总填料浓度。根据该指数，负载碳纳米管的体系是最有效的。油作为“入口”是一种简单有效的新型方法，用于负载纳米级填料，并在低填料浓度下实现性能的高度增强。
