微胶囊化聚磷酸铵的制备及表征.pdf

现代塑料加工应用2011年第23卷第5期
MODERN PLASTICS PRESSING AND APPLICATIONS
分析测试名
微胶棗化聚磷酸铵的制备及表征
谈玲华2杭祖圣2张声春2寇波李青范文斌
(1.南京工程学院材料工程学院,江苏南京,211167;2.南京理工大学化工学院,江苏南京,210094)
摘要;以獒磷酸铵(APP)为芯材、三聚氰胺甲醛树脂(MF为壁材,用原位聚合法制备出微胶衰化聚磷酸铵( PMCAPP),
采用激光粒度仪、扫描电镜、红外光谱、X射线能谱仪(EDS)、热重分析及吸湿试验等仪器及手段进行表征。结果表明,PM
CAPP粒径增大,粒径分布变窄,吸水率由15%(质量分数,下同)降低到7%;热分解性能有所提高;聚丙烯(PP)/ PMCAPP
的阻燃性能优于PP/APP的,当 PMCAPP的添加量达到15%时阻燃性能最佳,极限氧指数(LOD值达到36.0%。
关键词:聚磷發铍微胶囊化原位聚合吸湿性阻燃性能
Preparation and Characterization of Microencapsulated
Ammonium Polyphosphate
Tan Linghua]= Hang
, ushen
zhang Shengchun"Kou Bo Li Qing Fan Wenbin
(1. Department of Material Engineering, Nanjing Institute of Technology
Nanjing, Jiangsu, 21 1167: 2. School of Chemical Engineering, Nanjing
University of Science and Technology, Nanjing, Jiangsu, 210094)
Abstarct: Microencapsulated ammonium polyphosphate (PMCAPP) was prepared by
In-situ polymerization with ammonium polyphosphate (APP) as core material and mela-
mine formaldehyde resin(MF) as wall material. It was characterized by laser particl
sizer, scanning electron microscope(SEM),infrared spectrum(IR), EDS, thermogravimetric
analysis (TG), and moisture absorption experiment. The results show that the particle
size of the obtained PMCAPP is improved and the particle size distribution becomes
narrow. Compared with the untreated APP, water absorption of the PMCAPP decreases
from 15% to 7% and the flame-retardation property is improved. Pyrolysis property of
the obtained PP/PMCAPP is better than that of PP/APP. With 15% of PMCAPP
added into PP, perfect retardancy is obtained with LOI of 36.0%
Key words: ammonium polyphosphate; microencapsulation; in-situ polymerization;
moisture absorption property; tlam-retardation property
聚磷酸铵(APP)受热脱水后生成的聚磷酸吸湿性大及与材料相容性差等缺点,限制了其应
是一种强脱水剂,可以促使有机物表面脱水生成用范围2
炭化物,加之生成的非挥发性磷的氧化物及聚磷
为了解决这些问题,需要对APP进行表面
酸对基材表面进行覆盖,隔绝空气从而达到阻燃
收稿日期:2010-12-02;修改稿收到目期:2011-07-15
的目的。同时,由于含有氮元素,APP受热分解
作者筒介:谈玲华,讲师,博士研究生,主要从事材料制备及
释放出氮气及氨气等气体,这些气体不易燃烧,
性能硏究,E-mail; tanlinghua@nit.edu
阻隔了氧的供应,使APP具有良好的阻燃性
基金项目:南京工程学院校级科研基金项目(KXJ08
能。但由于常规APP具有相对分子质量低、
南京℃程学院校级科研基金项目(KXJ08056)