自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第42卷    第4期    总第200期    2011年4月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2011)04-0897-06
PVC用热稳定剂镁铝铈类水滑石的合成
杨占红1,易师1,贺红梅1, 2

(1. 中南大学 化学化工学院,湖南 长沙,410083;
2. 郑州电力高等专科学校,河南 郑州,421005
)

摘 要: 采用低过饱和沉淀法制备具有水滑石结构的镁铝铈类水滑石,探索pH、不同铈铝的物质的量比n(Ce3+)/n(Al3+)、陈化温度和陈化时间对产物晶型的影响,利用XRD,SEM,FT-IR和TG-DTA等对其进行表征,将聚氯乙烯(PVC)、邻苯二甲酸二正辛酯(DOP)、镁铝铈类水滑石(MgAlCe-CO3-HTLcs)按一定比例复配,进行静态热老化试验和刚果红法试验,并对其热稳定性能进行研究。研究结果表明:控制溶液中pH≥11,0.025≤n(Ce3+)/n(Al3+)≤0.050,n(M2+)/n(M3+)=2:1,于110 ℃陈化8 h,能制备出具有典型的水滑石结构、结晶度高、结构完整、晶型单一的镁铝铈类水滑石。镁铝铈类水滑石能将PVC的热稳定时间延长至约110 min。

 

关键字: 镁铝铈水滑石;热稳定剂;聚氯乙烯;热稳定性

Preparation of MgAlCe-CO3-HTLcs as heat stabilizer for PVC
YANG Zhan-hong1, YI Shi1, HE Hong-mei2

1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Zhengzhou Electric Power College, Zhengzhou 450004, China

Abstract:MgAlCe-CO3-HTLcs were prepared by low saturated precipitation. The effects of many conditions such as pH, different molar ratios of n(Ce3+)/n(Al3+), aging temperature and aging time on the crystal form of MgAlCe-CO3-HTLcs were investigated. The synthesized materials were analyzed and characterized by using XRD, SEM, FT-IR and TG-DTA. The composites consisting of PVC, DOP and MgAlCe-CO3-HTLcs were prepared with specific ration, and the thermal stability of polyvinyl chloride (PVC) composites was studied by static thermal aging test and Congo Red method. The results show that MgAlCe-CO3-HTLcs has high crystallization degree and uniform structure when the preparation condition is as follows: pH≥11, n(M2+)/n(M3+)=2:1, 0.025≤n(Ce3+)/n(Al3+)≤0.050, aging at 110 ℃ for 8 h. The thermal stability of the PVC composites with MgAlCe-CO3-HTLcs is significantly enhanced with the onset of blackening lasting to about 110 min.

 

Key words: MgAlCe-CO3-HTLcs; thermal stabilizer; PVC; thermal stability

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号