基于新的丁烯混合物的结晶和化行为
Xiaofan Li1, Xiaohu Zhang1, Huan Ji1
1Huangpu Institute of Materials, Centers for Aircraft Science, Guangzhou 510700, China.
Polymers
|February 10, 2024
概括
添加聚乙烯-异烯共聚合物 (BIR) 和TDAE油显著改变了基于的乙烯 (Nd-BR) 的结晶和化行为. 与BIR相比,TDAE油对Nd-BR的影响更大.
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
- 物理化学 物理化学
背景情况:
- 基于的丁 (Nd-BR) 是一种具有独特特性的合成.
- 了解其结晶和融化行为对于优化其应用至关重要.
- 添加剂如聚丁烯-异烯共聚合物 (BIR) 和TDAE油对这些特性的影响需要详细研究.
研究的目的:
- 研究BIR和TDAE油对Nd-BR结晶和融化行为的影响.
- 量化这些稀释剂对点和结晶温度等关键热性质的影响.
- 在这些添加剂的存在下建立Nd-BR的热行为预测模型.
主要方法:
- 差分扫描热量计 (DSC) 用于分析热过渡.
- 在各种温度下分析结晶和融行为.
- 制定一个总曲线,将峰值化温度 (Tm,峰值) 与结晶温度 (Tc) 相对应.
- 应用洛伦茨方程和多峰拟合来确定平衡点 (Tm0).
主要成果:
- BIR和TDAE油都降低了Nd-BR的临界结晶温度 (Tc,c),TDAE油显示出更明显的效果.
- 在Tc,c以下观察到双峰,归因于不同的球形尺寸.
- 成功开发了一个总曲线,允许对稀释剂效应进行定量评估.
- 随着BIR和TDAE油的添加,平衡点 (Tm0) 显著下降,低至-6.579°C.
结论:
- BIR 和 TDAE 油作为稀释剂,主要影响 Nd-BR 的核化温度和结晶度水平.
- 与同等质量分数的BIR相比,TDAE油对Nd-BR的晶体结构的影响更大.
- 开发的主曲线和洛伦茨方程提供了一种可靠的方法来预测在这些添加剂的存在下Nd-BR的热行为和平衡点.
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