摘要
采用不同的改性剂对焦磷酸哌嗪(PAPP)进行表面改性处理,得到不同的改性焦磷酸哌嗪(MPAPP)。经过处理的PAPP粉体疏水性和流动性均得到显著改善,其中含氢硅油(含氢量1.0%)的改性效果最佳。场发射扫描电镜(SEM)测试结果显示,包覆后的PAPP在其表面形成了致密的包覆层,减少了PAPP的粉体团聚,其流动性显著提高。通过比较不同包覆量的改性PAPP粉体性能,发现改性剂质量分数在0.5%时,接触角达到120°,流动性提高至21.4 g/5min。当用量超过0.5%时粉体性能变化不明显。探讨并确定了MPAPP较优处理工艺为反应温度140℃、反应时间90 min、搅拌速度800 r/min。采用MPAPP的阻燃聚丙烯(PP)样条,与未经处理的PAPP阻燃样条相比,其阻燃性和力学性能均得到了一定程度的提高。锥形量热仪测试结果表明,使用MPAPP的样品热释放速率降低23%,样品的热稳定性提高,热释放减缓。
Piperazine pyrophosphate(PAPP)was modified with different modifiers to obtain different modified piperazine pyrophosphate(MPAPP).The hydrophobicity and fluidity of treated PAPP were significantly improved, and hydrogen containing silicone oil(especially hydrogen content 1.0%)performed best modification effect in our research.Field emission scanning electron microscope(SEM)results show that a dense coating layer is formed on the surface of MPAPP,which reduces the agglomeration of PAPP,and the fluidity is significantly improved.By comparing the properties of MPAPP with different coating amounts, it is found that the contact angle is above 120° and the fluidity is increased to 21.4 g/5min when the treat amount of modifier reaches 0.5%.The properties are not obviously changed when the treat amount is more than 0.5%.The optimal preparation process of MPAPP is determined as reaction temperature 140 ℃,reaction time 90 min and stirring speed 800 r/min.The flame retardancy and mechanical properties of flame resistant polypropylene(PP)with MPAPP are improved to a certain extent compared with those of untreated PAPP.The results of cone calorimeter show that the heat release rate of the sample using MPAPP decreases by 23%,the thermal stability of the sample is improved, and the heat release slows down.
作者
董玲玲
林倬仕
叶文
许肖丽
肖雄
陈彦昊
许保云
DONG Lingling;LIN Zhuoshi;YE Wen;XU Xiaoli;XIAO Xiong;CHEN Yanhao;XU Baoyun(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China;State Key Laboratory of Polyolefins Catalysis,Shanghai 200062,China;Shanghai Engineering Research Center of Functional Flame Retardant Material,Shanghai 200062,China;Sino-Spanish Joint Research Center for Advanced Materials Technology,Shanghai 200062,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2023年第2期126-132,共7页
China Plastics Industry
基金
上海市功能阻燃材料工程技术中心(19DZ2253700)
上海市科技行动计划国际合作项目(21520730600)。
关键词
焦磷酸哌嗪
含氢硅油
包覆处理
Piperazine Pyrophosphate
Hydrogen-containing Silicone Oil
Coating Treatment
作者简介
董玲玲,女,1996年生,本科,主要从事阻燃剂开发及性能评估。donglingling0521@163.com;通信作者:叶文,男,1988年生,硕士,高级工程师,主要从事无卤阻燃剂的开发及市场化工作。yewen12003@163.com。
