降低负重轮天然橡胶基复合材料生热的研究状况

Research Status of Reducing Heat Build-up of NR-based Composites for Loadwheel

概述负重轮天然橡胶(NR)基复合材料的生热原理及表征方法,重点介绍交联结构和填料包括炭黑、硅烷偶联剂改性白炭黑、新型碳材料氧化石墨烯和多壁碳纳米管对复合材料生热影响的研究状况。指出将新型碳材料部分取代炭黑,采用胶乳共沉法制备新型碳材料母胶有利于将新型碳材料均匀分散在NR基复合材料中,在有效提高NR基复合材料强度的同时降低其生热。新型碳材料制备成本高,需要进一步探讨其放量制备的简易方法及分散工艺,以开发能够工业化生产的应用于负重轮的高强度和低生热NR基复合材料。

The basic mechanism and characterization of heat build-up of natural rubber(NR)-based composites for loadwheel were summarized in this paper,and the research status of the influence of crosslinking structure and filler(including carbon black,modified silica by silane coupling agent,new carbon material such as graphene oxide and multi-wall carbon nanotubes) on the heat build-up of the composites was mainly introduced. It was pointed out that partial replacement of carbon black by new carbon materials and preparation of new carbon material masterbatch by the latex co-precipitation method were conducive to uniformly dispersing the new carbon materials in NR-based composite materials,effectively improving the strength of NR-based composite materials while reducing its heat build-up. The production cost of new carbon material was high,so it was necessary to further explore simple methods for large scale production and dispersing process of new carbon materials to develop NR-based composites with high strength and low heat build-up which could be industrially produced and applied to loadwheel.