通过与经过修改的生物基阻燃剂的界面反应,向阻燃和固的聚氨酸/交联聚氨混合物
Zhaoliang Jiang1, Meng Ma2, Xinpeng Wang1
1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
International journal of biological macromolecules
|August 10, 2023
概括
这项研究开发了一种新的生物基阻燃剂,聚酸/酸 (APP@CS),用于聚乳酸 (PLLA). APP@CS显著提高了阻燃性和增强机械性能,克服了材料修改中的常见权衡.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 阻燃性 阻燃性 阻燃性 阻燃性
背景情况:
- 提高聚乳酸 (PLLA) 的阻燃性往往会损害其机械性能.
- 在PLLA复合材料中平衡机械和燃烧性能仍然是一个重大挑战.
研究的目的:
- 为PLLA开发一种基于生物的阻燃剂,增强阻燃性而不损害机械完整性.
- 研究聚酸盐 (APP) 和酸盐 (CS) 作为阻燃剂和硬化剂的协同作用.
主要方法:
- 通过静电自组装合成了一种基于生物的阻燃剂,APP@CS.
- 通过与现场形成的聚氨 (PU) 进行反应混合而制备的硬化PLLA复合材料.
- 使用UL-94和限制氧指数 (LOI) 测试评估的阻燃性.
主要成果:
- 该APP@CS阻燃剂降低了PLLA的水友性,并改善了焦炭形成.
- 使用10phr APP@CS的PLLA复合材料获得了UL-94 V-2评级和24.9%的LOI.
- 酸盐外参与了反应,增强了机械性能,在断裂时延长了74%,超过了单独使用APP的复合材料.
结论:
- 开发的APP@CS阻燃剂有效地平衡了PLLA的阻燃性和机械性能.
- 这种方法为更广泛的应用提供了PLLA高性能修改的有希望的策略.
- 该研究为设计高分子的先进生物基阻燃剂提供了宝贵的见解.
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