| 改性热解炭黑的结构表征及其在丁苯橡胶中的应用研究 |
| The Structure Characterization of Modified Pyrolysis Carbon Black and its Application in Styrene Butadiene Rubber |
| 投稿时间：2015-11-30 修订日期：2015-11-30 |
| DOI： |
| 中文关键词: 改性热解炭黑 结构表征 形态模型 物理机械性能 |
| 英文关键词: modified pyrolysis carbon black structure characterization configuration model the physical and mechanical properties |
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| 中文摘要: |
| 本文主要对改性热解炭黑(MCBp)的结构与性能进行了一系列表征,并在丁苯橡胶(SBR)中进行了应用研究。通过浓HNO3和浓HF依次处理热解炭黑,得到灰分含量为0.27%的改性热解炭黑,通过基本物性测试可知,改性热解炭黑DBP吸油值、挥发份含量有所提高,而BET比表面积值有所降低,通过粒径分析可知,改性热解炭黑的二次结构粒径分布变宽、变大,通过FTIR分析可知,改性热解炭黑的表面的-OH消失,-COOH等极性基团增加不明显。将其应用于SBR中,结果表明,经过改性之后的热解炭黑在填充SBR时,混炼胶的门尼粘度略有提高,门尼松弛中的弹性模量升高,加工性能略有降低；在硫化特性中,焦烧时间延长,硫化速度降低,拉伸强度提高10%,定伸应力提高20%-30%,硬度、回弹性能略有提高,耐磨性能增强,压缩生热量减小。 |
| 英文摘要: |
| The structure and properties of modified pyrolysis carbon black (MCBp) were conducted a series of characterizations in this paper, and MCBp was applied in the styrene butadiene rubber (SBR). The pyrolysis carbon black was disposed by the concentrated HNO3 and HF, then was called modified pyrolysis carbon black, and the ash content of was 0.27%, through the test, the result show that the DBP value and volatile content of MCBp were increased, and the BET specific surface area values have fallen, by particle size analysis, the size of the secondary structure of MCBp was become wider and larger, by FTIR analysis show that the –OH group on the surface of MCBp was disappear, and the polar group increase unobvious , such as –COOH. Applied in SBR,The results show that, the mooney viscosity of mixing rubber increased slightly, the mooney relaxation modulus of elasticity increases, the processing performance decreased slightly when the MCBp filled in SBR. In the vulcanization characteristics, the scorch time extend, curing rate is reduced, the tensile strength increased by 10%, stretching stress increased by 20% to 30%, the hardness, rebound slightly raised, wear-resisting performance enhancements, compression heat decrease. |
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