对SBR/PP改性青的热稳定性和微改机制的评估
Qing Zhang1,2,3,4, Dehua Hou1,2, Zhongyu Li1,2
1Henan Key Laboratory of High-Grade Highway Detection and Maintenance Technology, Xinxiang 453003, China.
Polymers
|February 24, 2024
概括
添加 styrene-butadiene (SBR) /聚烯 (PP) 热塑性弹性体可以增强青.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 聚合物化学 聚合物化学
背景情况:
- 青改造对于在不同温度条件下提高性能至关重要.
- 热塑性弹性体具有提高青性能的潜力.
- 了解改性青的热稳定性和兼容性对于实际应用至关重要.
研究的目的:
- 为了评估复合聚合物改性青的热稳定性,使用 styrene-butadiene (SBR) 和聚烯 (PP).
- 调查不同与塑料比率和添加剂对青性能的影响.
- 为了评估在青矩阵内的SBR/PP颗粒的兼容性.
主要方法:
- 通过热混合来制备SBR/PP复合颗粒.
- 频率扫描和多应力爬行恢复 (MSCR) 测试用于热稳定性评估.
- 科尔-科尔图和微结构成像用于兼容性分析.
主要成果:
- 通过SBR/PP修改,提高了青的性能等级 (PG),提高了高温和低温的适应性.
- 评估分离指数是高温储存稳定性的可靠指标.
- 较高的-塑料比率对高温热稳定性产生负面影响;添加剂改善分散和微观结构.
结论:
- SBR/PP热塑性弹性体有效地提高了青的热稳定性和性能等级.
- 与塑料的比率和添加剂的存在显著影响复合材料改性青的性能.
- 科尔-科尔图表是评估聚合物改性青兼容性的宝贵辅助工具.
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