相关实验视频
Updated: Jul 3, 2025

05:58
Deposition of Porous Sorbents on Fabric Supports
Published on: June 12, 2018
6.6K
评价用酸酸酸盐酸 Ester 阻燃剂处理的棉织品的耐火性和耐久性
Qing Jing1, Yonghua Lu1, Kunling Liu2
1State Key Laboratory of Resource Insects, College of Sericulture Textile and Biomass Sciences, Southwest University, Chongqing 400715, PR China.
International journal of biological macromolecules
|February 15, 2024
概括
一种新型的酸酸酸 (PPEPA) 阻燃剂被开发用于棉织品. 经过处理的织物表现出极好的阻燃性和耐用性,即使经过50个洗周期,也保持了其保护性质.
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
- 织工程 织工程 织工程
背景情况:
- 阻燃剂对于提高织材料的安全性至关重要.
- 棉花的持久阻燃性仍然是一个挑战,尤其是在洗后.
- 基于的阻燃剂有可能提供有效的防火保护.
研究的目的:
- 为了合成和表征一种新的酸胺酸 (PPEPA) 阻燃剂.
- 为了评估用PPEPA处理的棉织品的阻燃性和耐用性.
- 调查PPEPA和棉纤维之间的粘合机制.
主要方法:
- 使用氧化和乙醇胺合成PPEPA.
- 使用NMR,FTIR,SEM和XRD进行表征.
- 阻燃性测试包括LOI,垂直火焰和圆热量计.
- 通过50个洗周期进行耐用性评估 (AATCC 61-2013 3A).
主要成果:
- 用PPEPA处理的棉花 (CT-PPEPA3) 的高LOI为46.5%,在50个洗周期后降至31.4%.
- 证实了PPEPA和纤维素之间形成共价键 (-N-P(=O) -O-C和 -O-P(=O) -O-C).
- -N-P(=O) -O-C-键的p-π结合效应有助于增强稳定性和耐久性.
- 经过处理的织品显示出有效的凝结相和协同阻燃.
- 棉织品保持了足够的破裂强度和柔软度.
结论:
- 合成的PPEPA阻燃剂有效地为棉织品提供了持久的阻燃性.
- 共价键和p-π合效应是增强耐用性和耐火性的关键.
- 经过PPEPA处理的棉织品适用于要求消防安全性和可接受的机械性能的应用.
相关概念视频
Variables Affecting Phosphorescence and Fluorescence
501
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
501
Types of Step-Growth Polymers: Polyesters
2.2K
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...
2.2K
Flame Photometry: Overview
589
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
589
Gas Chromatography: Types of Detectors-II
371
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
371
Photoluminescence: Applications
395
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
395
Flame Photometry: Lab
246
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
246

