对CPVC/ABS复合材料的非单调阻燃性进行机械洞察
Long Zhang1,2, Lewen Liu1, Shengwen Zou1
1Kingfa Science and Technology, Co., Ltd., Guangzhou 510663, China.
Polymers
|September 13, 2025
概括
化聚乙烯 (CPVC) /烯-丁-烯 (ABS) 复合材料表现出复杂的阻燃性. 在2:3 CPVC/ABS比率下实现了最佳性能,这归因于增强的焦炭形成和交叉连接.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 阻燃性是指阻燃性是指阻燃性.
背景情况:
- 化聚乙烯 (CPVC) /烯-丁-烯 (ABS) 复合材料是广泛使用的工程热塑性塑料.
- 在CPVC/ABS系统中阻燃机制尚未完全理解.
- 了解这些机制对于优化阻燃性能至关重要.
研究的目的:
- 系统地研究CPVC/ABS复合材料的非单调阻燃行为.
- 为了阐明底层阻燃机制.
- 为了确定最佳的组合,以提高阻燃性.
主要方法:
- 对CPVC/ABS复合材料的综合性表征.
- 使用限制氧指数 (LOI),UL-94垂直燃烧测试和圆热量计测试 (CCT) 来评估燃烧性能.
- 剩余炭的形态分析和热重力测量分析 (TGA).
主要成果:
- 观察到一个意想不到的非单调的阻燃模式,最初有所改善,然后随着ABS含量减少而下降.
- 在CPVC/ABS比率为2:3的情况下,可以达到最佳的阻燃性,从而获得UL-94 5VA评级和47.3%的总热释放 (THR) 减少.
- 确定了碳化行为中的协同效应,包括加速碳形成和增强碳交联.
结论:
- 阻燃机制涉及加速炭火形成和增加炭火交叉连接.
- 这些发现为设计高性能阻燃聚合物复合材料提供了基本的见解.
- 这些结果有助于工业化实施先进的阻燃CPVC/ABS材料.
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