基于烯-丁烯和烯-丁烯的烯-丁烯填充化合物的硫和氧化物交叉连接
Ján Kruželák1, Michaela Džuganová1, Andrea Kvasničáková1
1Department of Plastics, Rubber and Fibres, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
Polymers
|April 12, 2025
概括
在化合物中加入二硫酸会影响交叉连接. 与硫固化相比,过氧化物固化产生更高的交叉链密度和更好的机械性能,无论其硫酸盐含量如何.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 技术 技术 技术
背景情况:
- styrene-butadiene (SBR) 和 acrylonitrile-butadiene (NBR) 是广泛使用的弹性体.
- 二硫酸是一种生物基添加剂,在化合物中具有潜在的应用.
- 了解添加剂和固化系统之间的相互作用对于优化复合材料性能至关重要.
研究的目的:
- 调查二硫酸对SBR和NBR化合物的交联过程的影响.
- 评估不同固化系统 (硫与过氧化物) 对这些复合材料的形态和物理机械性能的影响.
- 确定基硫酸盐含量如何影响交叉链密度,机械性能和动态机械特性.
主要方法:
- 在SBR和NBR矩阵中加入二硫酸盐 (10-60phr).
- 应用两种不同的固化系统:基于硫和基于过氧化物 (甲酸盐的二过氧化物).
- 分析交叉链密度,形态 (显微镜),物理机械性能 (抗拉强度,破裂时的延长,硬度) 和动态机械性能 (玻璃过渡温度).
主要成果:
- 过氧化物固化复合材料表现出更高的交叉链密度,不受酸硫酸盐含量的影响.
- 硫固化复合材料的交叉链密度较低,随着硫酸的增加而下降.
- 过氧化物固化导致了更好的粘附性,更高的模量,硬度和抗拉强度,而硫固化导致了破裂时更高的延伸.
结论:
- 过氧化物固化更有效地实现了高交叉链密度和优越的机械性能,在用硫酸盐填充的复合材料中.
- 二硫酸对交叉连接的影响在硫和过氧化物系统之间有显著差异.
- 固化系统的选择对于定制生物基改性复合材料的性能至关重要.
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