相关实验视频
Updated: Jun 6, 2025
05:58
Deposition of Porous Sorbents on Fabric Supports
Published on: June 12, 2018
6.5K
修改了基化基基化的棉布的阻燃性研究2
Lingling Guo1, Hongqin Lin1, Zhenming Qi1
1College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China.
Molecules (Basel, Switzerland)
|November 27, 2024
概括
这项研究提出了一种新的,环保的方法,利用硫化棉织物和离子制造可回收的阻燃棉织物. 经过处理的织物具有出色的耐火性,并保持了关键材料特性.
科学领域:
- 材料科学 材料科学 材料科学
- 织品化学 织品化学
- 聚合物化学 聚合物化学
背景情况:
- 传统的阻燃处理通常涉及危险化学品,缺乏耐用性.
- 开发可持续和可回收的阻燃织品对于安全和环境问题至关重要.
- 棉织物需要有效的处理来增强其耐火性,以更广泛的应用.
研究的目的:
- 开发一种简单,绿色和可回收的方法来生产阻燃棉织物.
- 用化学方法对棉织物进行改造,以提高其热稳定性和耐火性.
- 为了研究涉及硫棉和离子的阻燃机制.
主要方法:
- 使用 sodium periodate 氧化棉织物以创建活性位点.
- 氧化棉织物的硫化与二硫酸.
- 在硫化棉织物 (COT-SC-Ba) 上化离子 (Ba2+).
主要成果:
- 在COT-SC-Ba中,被证明具有延迟点火和降低热释放率 (HRR),总烟雾释放率 (TSR) 和有效燃烧热量 (EHC) 的非易燃性.
- 热重力测量分析 (TG/DTG) 显示热稳定性和焦炭形成增加,剩余质量显著增加.
- 34.4%的高限氧指数 (LOI) 和成功的垂直燃烧试验证实了出色的阻燃性,在洗和重新处理后可以恢复.
结论:
- 硫酸组和离子的组合有效地提高棉织物的阻燃性,通过促进焦炭层.
- 开发的方法简单,环保,并产生可回收的阻燃织品.
- 该工艺保持了可接受的破裂强度,白度和高度水平,使其适合实际应用.
相关概念视频
03:46Qualitative Analysis
22.0K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
22.0K
01:22Electrophilic Aromatic Substitution: Sulfonation of Benzene
5.8K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
5.8K
01:13Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
5.8K
Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
5.8K