聚乙烯乙烯和聚烯硫共聚合物的合成和特性
Azamat Zhansitov1, Kamila Shakhmurzova1, Zhanna Kurdanova1
1Center for Progressive Materials and Additive Technologies, Kabardino-Balkarian State University Named After H.M. Berbekov, 360004 Nalchik, Russia.
Polymers
|January 28, 2026
概括
合成了聚乙烯硫和聚乙烯乙烯的新型共聚合物. 增加2,6-difluorobenzonitrile (DFBN) 含量增加了机械强度,但降低了抗冲击能力.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 聚乙烯硫 (PPSU) 和聚乙烯 (PEN) 是一种高性能聚合物.
- 同聚合物通过结合聚合物骨干来提供可调节的特性.
研究的目的:
- 通过核性多重凝结合成PPSU和PEN的新型共聚合物.
- 研究由此产生的共聚合物的结构,热和机械性能.
- 确定含有2,6-二二尼特 (DFBN) 的含量对共聚合物特性的影响.
主要方法:
- 使用2,6-二二尼特 (DFBN),4,4'-二二和4,4'-二二硫的核性多重凝结.
- 通过红外 (IR) 光谱学进行结构确认.
- 使用差分扫描热量测量 (DSC) 和热重力测量分析 (TGA) 的热分析.
- 机械性能评估 (弹性模量,曲强度,抗拉强度,冲击强度).
主要成果:
- 同聚合物已成功合成和表征.
- 热稳定性和玻璃过渡温度在很大程度上独立于共聚合物组成.
- 增加的DFBN含量 (>75%) 导致在357°C的化峰值,表明更高的结晶度和降低的可溶性.
- 弹性模量,曲强度和拉伸强度随着DFBN含量增加而增加.
- 冲击强度随着DFBN细分的增加而下降.
结论:
- 合成的共聚合物表现出可调节的机械性能.
- 加入DFBN增强了性和强度,但损害了性.
- 该研究提供了关于PPSU-PEN共聚合物的结构-性质关系的见解.
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