聚磷酸铵的热解与成炭机理.pdf

石油化
2014年第43卷第10期
PETROCHEMICAL TECHNOLOGY
1173
阻燃剂三季戊四醇磷酸酯/聚磷酸铵的
热解与成炭机理
丁率2,彭辉,刘国胜,郝建薇',蒋伟中
(1.北京理工大学阻燃材料研究国家专业实验室,北京100081;2.中国石化北京化工研究院,北京10003)
[摘要]将阻燃剂三季戊四醇磷酸酯一一三(1-氧代-1-磷杂-2,6,7-三氧杂双环[2.2.2]辛烷-4-亚甲棊)磷酸酯(简称 Trimer
和聚磷酸铵(AP)均匀混合,制得复合阻燃剂 Trimer/APP;采用TG,FTIR,XPS等方法研究了 trimer/APP的热解成炭机理。
表征及分析结果表明, Trimer E与APP之间的相互作用促进二者交联成炭,导致800℃时的残炭量较多; Inner与APP混合后
热解过程中出现明显的膨胀现象,且在较低温度下即可明配地脱水成炭,有利于提高高聚物的阻燃性能;AP催化 Trimer脱
水成炭,APP中N元素增强了碳质化合物的热稳定性;APP的存在改变了 trimer的热解过程,且在高温下生成耐热的PO-N
键和C一N键,使其高温残炭量明显提高。
关键词]阻燃剂;三季戊四醇僯酸酯;聚磷酸倰;热解;碳化
「文章编号]」1000-8144(2014)10-1173-06
[中图分类号]TQ314.248
文献标志码]A
Thermal Degradation and Carbonization Mechanism of Three Pentaerythritol
Phosphates/Ammonium Polyphosphate as Flame Retardant
Ding Shuai Peng Hui, Liu Guosheng, Hao Jianwei, Jiang Weizhong
(1. National Laboratory of Flame Retardant Materials, Being Institute of Technology, Beijing 100081, China
2. SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China)
Abstract A composite flame retardant, the blend of tri(1-0x0-2, 6,7-trioxa-1-phosphabicyclol2, 2, 2
octane-methyl )phosphate(Trimer ) and ammonium polyphosphate(Appxtrimer/APP), was prepared,
and its thermal degradation and carbonization mechanism were studied by TG, FTIR and XPS. The
TG result showed that the interaction between Trimer and APP accelerated char forming at 800 C
The morphology images indicated that Trimer/APP degraded at low temperature and an intumescent
phenomenon was observed during the degradation process, which might be beneficial to its application
in polymers. The FTTR result confirmed that APP catalyzed the dehydration and charring of Trimer, and
the presence of N in APP enhanced the thermostability of the carbonaceous compound. The PS result
showed that APP changed the thermal degradation process of Trimer. The bonds of P-O-N and C-N
were formed at high temperature which significantly increased the char residue amount
Keywords J] flame retardant; three pentaerythritol phosphates; ammonium polyphosphate;
thermal degradation; carbonization
与含卤阻燃体系相比,膨胀阻燃体系具有低剂阻燃效率的同时23,阻燃剂的研究向着高聚合
烟、低毒、无污染和燃烧时无熔融滴落等特点,
是近年来聚合物阻燃研究的热点。但传统的膨胀阻[收稿日期]2014-05-30;[修改稿日期】2014-06-29
燃剂存在热稳定性差、耐水性差、阻燃效率低以及
[作者简介]丁率(1981-),男,山西省大同市人,硕士,工
与聚合物基材相容性差等缺陷,不能满足阻燃塑料
程师,电话010-59202236,电邮 gtdsa(@126.c0m。联系人
郝建薇,电话010-68913075,电邮hjw@bit.edu.cn
在潮湿环境中的应用。近年来,在不断提高阻燃[基金项目]国家科技支撑计划项日资助项日(x0 AE03B052)。