在生物降解性塑料中开发基于化素的内燃阻燃剂
Heesu Yoo1, Jaemin Jo2, Sung Jin Kim3
1Major in Wood and Paper Science, School of Forestry, Science and Landscape Architecture, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
Polymers
|July 12, 2025
概括
这项研究增强了使用改性木质素和聚酸 (APP) 的聚乳酸 (PLA) 复合材料的阻燃性. 新材料在保持机械强度的同时获得V-0 UL-94评级和高限制氧指数 (LOI).
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
- 消防安全工程 消防安全工程
背景情况:
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有各种应用的潜力.
- 在燃烧过程中,PLA具有较差的阻燃性,在燃烧过程中释放出高热量和有毒烟雾.
- 为PLA开发可持续和有效的阻燃解决方案至关重要.
研究的目的:
- 为了化学修改Kraft质素,以提高其碳形成能力.
- 使用改性木质素和聚酸 (APP) 制造阻燃聚乳酸 (PLA) 复合材料.
- 评估开发的PLA复合材料的阻燃性和机械性能.
主要方法:
- 实力素通过化和化与四氧化基改性.
- 修改后的红素与APP相结合,并与PLA混合融化.
- 使用UL-94垂直燃烧测试和限制氧指数 (LOI) 测量来评估阻燃性.
- 通过拉伸强度测试来评估机械性能.
主要成果:
- 证实了和西兰功能的成功移植到红素上.
- 修改后的红素表现出增强的热稳定性.
- 该PLA/APP/SPKL复合物获得了V-0 UL-94评级和31.95%的LOI,明显高于纯PLA (19-21%的LOI).
- 该复合材料的机械强度与V-2阻燃性PLA-APP复合材料保持了相似的强度.
结论:
- 结合APP,化学修饰的红素有效地提高了PLA复合材料的阻燃性.
- 这种方法为生产具有高阻燃性和保持机械强度的PLA复合材料提供了一种可持续的方法.
- 开发的材料为运输,建筑和电子行业的防火应用提供了可行的替代方案.
相关概念视频
01:14Polymer Classification: Architecture
3.0K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.0K
01:31Plasticizers
116
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
116
01:20Types of Step-Growth Polymers: Polyesters
2.3K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.3K