制备高透明度二基阻燃剂及其阻燃性能研究
1School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
Polymers
|December 23, 2023
概括
一种基于DOPO的新型阻燃剂SBPDOPO被合成为环氧树脂. 与SBPDOPO增强的环氧树脂达到UL-94 V-0等级,同时保持高透明度和低色差.
科学领域:
- 聚合物科学 聚合物科学
- 材料化学 材料化学
- 阻燃技术 阻燃技术 阻燃技术
背景情况:
- 透明度对于聚合物阻燃剂至关重要,特别是在环氧树脂 (EP) 中.
- 高透明度和低色差偏差对于光学和照明应用中的阻燃EP至关重要.
- 开发有效的阻燃剂,以保持光学性能仍然是一个挑战.
研究的目的:
- 合成一种基于DOPO的新型阻燃剂,具有高透明度和低色差异.
- 评估含有新阻燃剂的环氧树脂复合材料的阻燃性和光学性能.
- 为了阐明开发的材料的阻燃机制.
主要方法:
- 通过阿瑟顿-托德反应合成基于DOPO的阻燃剂 (SBPDOPO).
- 使用富里埃IR和NMR光谱学对SBPDOPO的化学结构进行了表征.
- 评估EP/SBPDOPO复合材料的阻燃性 (UL-94,LOI,HRR,TSR) 和光学性能 (透射率,色差).
主要成果:
- 在SBPDOPO的成功合成和特征.
- 具有7重%SBPDOPO的环氧树脂获得了UL-94 V-0评级和32.1%的LOI.
- 观察到热释放速度,总热释放和烟雾产生的显著减少.
- 保持了高透明度 (94%的透射率) 和低颜色偏差 (ΔE = 1.63).
- 提高了EP的热稳定性,剩余质量和玻璃过渡温度.
结论:
- 合成的SBPDOPO有效地赋予了环氧树脂的阻燃性,而不会影响透明度.
- SBPDOPO既具有气相和凝相阻燃机制.
- SBPDOPO/EP复合材料在需要阻燃性和光学清晰度的应用中具有显著的潜力.
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