期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 138, 期 20, 页码 -出版社
WILEY
DOI: 10.1002/app.50413
关键词
ammonium polyphosphate; intumescent flame retardant; melamine‐ formaldehyde resin; polypropylene; sodium silicate
资金
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials of China [000-01647909]
- National High-tech Research and Development Program [2012AA06A111]
- Natural Science Foundation of Hubei Province [2014CFB552]
The study developed flame retardant polypropylene containing micro-envelope core-shell structure flame retardants, which showed improved fire safety and thermal stability. Additionally, polyamide 6 was found to have a better char-forming effect, contributing to the enhanced flame retardant performance.
The flame retardant polypropylene containing the micro-envelope core-shell structure flame retardant, which encapsulated ammonium polyphosphate into melamine-formaldehyde resin and sodium silicate through in situ polymerization was prepared with polyamide 6, added as a carbon-forming agent. The composition of ammonium polyphosphate, encapsulated ammonium polyphosphate with melamine-formaldehyde resin and the micro-envelope core-shell structure flame retardant were characterized. The fire safety and thermal stability were investigated and showed an improvement including limiting oxygen index, thermogravimetric analysis, vertical burning tests, and microscale combustion calorimeter. The burned compounds were also studied to confirm the burning mechanism. The results showed the flame retardant performance had been greatly improved, while polyamide 6 had better char-forming effect. Besides, the water solubility of flame retardants and their influence on the mechanical properties of polypropylene were also investigated. The results on the effects of additives demonstrated a high efficiency flame retardant to polypropylene. A core-shell flame retardant that sodium silicate and melamine-formaldehyde resin-coated ammonium polyphosphate had been constructed. The effect of the built flame retardant system on the combustion performance of polypropylene was studied from the mechanism and performance. The LOI of the most flame retardant polypropylene reached 28.6%, and UL-94 reached the V-0 level.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据