| 硫负载改性多壁碳纳米管/天然橡胶复合材料的性能研究 |
| Study on Properties of Sulfur Loaded Modified MWCNTs/NR Composites |
| 投稿时间：2023-07-05 修订日期：2023-07-05 |
| DOI：10.12136/j.issn.1000-890X.2025.04.0267 |
| 中文关键词: 多壁碳纳米管 天然橡胶 界面 复合材料 力学性能 耐磨性能 |
| 英文关键词: MWCNTs sulfur loaded modification NR composite wear resistance compression heat build-up |
| 基金项目:宁夏回族自治区重点研究项目(2020ZDYF1131) |
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| 中文摘要: |
| 使用硫对多壁碳纳米管（MWCNTs）进行负载改性，制得硫负载改性MWCNTs（简称MWCNTs-S），采用乳液共混法制备MWCNTs-S/天然橡胶（NR）复合材料。结果表明：MWCNTs-S有明显的硫的特征衍射峰，其晶体无序度和表面缺陷程度增大，硫纳米粒子在MWCNTs表面分散均匀，未形成大的团聚；与MWCNTs/NR复合材料相比，MWCNTs-S/NR复合材料的加工安全性有所改善，拉伸强度、撕裂强度和耐磨性能提升，压缩生热降低，MWCNTs-S对复合材料的补强效果显著。本工作为MWCNTs改性及其对橡胶复合材料的补强提供了一种新的思路和方法。 |
| 英文摘要: |
| Multi-walled carbon nanotubes（MWCNTs） were modified by sulfur loading to prepare sulfur loaded modified MWCNTs（MWCNTs-S for short），and MWCNTs-S/Natural Rubber（NR） composites were prepared by emulsion blending method.The results showed that MWCNTs-S exhibited obvious characteristic diffraction peaks of sulfur，the crystal disorder and surface defect degree of MWCNTs-S increased，and the sulfur nanoparticles dispersed uniformly on the surface of MWCNTs-S without forming large agglomerations.Compared with MWCNTs/NR composite，the processing safety，tensile strength，tear strength and wear resistance of MWCNTs-S/NR composites were improved，the compression heat build-up was reduced.The reinforcement effect of MWCNTs-S on the composites was significant.This work provided a new idea and method for the modification of MWCNTs and its reinforcement of rubber composites.ion blending method. The results show that XRD of MWCNTs modified with sulfur load shows obvious characteristic diffraction peaks of sulfur. Raman results show that the ID/IG value increases from 0.97 to 1.08, and the disorder and surface defect degree of MWCNTs increase. SEM-EDS showed that the sulfur nanocrystals dispersed uniformly on the surface of MWCNTs without forming large agglomerations. The processing properties of rubber composite have been improved, and the mechanical properties have been significantly improved, the tensile strength has been increased from the original 28.4 MPa to 29.9 MPa, and the tearing strength has been increased from the original 120.3 kN?m-1 to 139.2 kN?m-1. The rubber composite prepared has excellent mechanical properties. This work provides a new idea and method for the modification of MWCNTs and the reinforcement of rubber composites. |
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