中国塑料 ›› 2016, Vol. 30 ›› Issue (09): 75-81 .DOI: 10.19491/j.issn.1001-9278.2016.09.014

• 助剂 • 上一篇    下一篇

碳酸根基水铝钙石的制备及其在PVC中的应用研究

张凯1,蒋平平2,刘洪亮1,董玉明3   

  1. 1. 江南大学化学与材料工程学院2. 江南大学 化学与材料工程学院3. 江南大学
  • 收稿日期:2016-05-11 修回日期:2016-06-22 出版日期:2016-09-26 发布日期:2016-09-26

Preparation of Hydrocalumites Based on CO32- and Its Application Research in PVC

  • Received:2016-05-11 Revised:2016-06-22 Online:2016-09-26 Published:2016-09-26

摘要: 利用氢氧化钙[Ca(OH)2]和氢氧化铝[Al(OH)3]以及无水碳酸钠(Na2CO3)为原料,以去离子水作溶剂,制备了碳酸根基水铝钙石(Ca4Al2(OH)12CO3·5H2O),通过傅里叶红外光谱、X射线衍射和扫描电子显微镜表征其结构。并将其作为热稳定剂应用于聚氯乙烯(PVC)中,通过热老化、刚果红、电导率和热失重分析等方法检测其热稳定性能。结果表明,Ca4Al2(OH)12CO3·5H2O具有长期型热稳定剂的特性,当其添加量为3份时,热稳定时间可达70 min,静态热稳定时间可达52 min;当Ca4Al2(OH)12CO3?5H2O/ZnSt2/DMAU复配体系的添加量为3份,并且Ca4Al2(OH)12CO3?5H2O:ZnSt2:DMAU在3:0.5:1.5~3:0:2之间时,复配体系的初期白度可达60 min左右,即使到110 min左右也未观察到“锌烧”现象发生。

关键词: 水铝钙石, 聚氯乙烯, 热稳定剂, 复配

Abstract: In this paper, hydrocalumites based on CO32- were prepared from calcium hydroxide, aluminum hydroxide, and anhydrous sodium carbonate, deionized water was used as a solvent. The product was analyzed by FI-TR, XRD and SEM and used as a thermal stabilizer in PVC. Through the methods of thermal aging test, Congo red test, conductivity test, and TGA, the thermal stability was measured. It showed that the Ca4Al2(OH)12CO3·5H2O constituted a long-term thermal stabilizer for PVC. When 3 phr in PVC, the thermal stable time could continue to 70 min and its static thermal stabilization time could be 52 min. When the amount of complex systems of Ca4Al2(OH)12CO3?5H2O/ZnSt2/DMAU was 3 phr and the mass radio of the system was between 3:0.5:1.5 to 3:0:2, the early whiteness of complex system could be up to 60 min. Even to about 110 min, it would not appear "zinc burn."

Key words: hydrocalumites, poly( vinyl chloride), thermal stabilizers, complex