化工进展 ›› 2019, Vol. 38 ›› Issue (04): 1862-1871.DOI: 10.16085/j.issn.1000-6613.2018-1298

• 材料科学与技术 • 上一篇    下一篇

新型PVC辅助热稳定剂乙酰丙酮镁的制备及热稳定性能

李晓斌1(),陈颖1,胡程程1,陈祥迎1(),李平2,黄先胜2   

  1. 1. 合肥工业大学化学与化工学院,安徽 合肥 230009
    2. 安徽佳先功能助剂股份有限公司,安徽 蚌埠 233010
  • 收稿日期:2018-06-22 修回日期:2018-12-25 出版日期:2019-04-05 发布日期:2019-04-05
  • 通讯作者: 陈祥迎
  • 作者简介:李晓斌(1993—),男,硕士研究生,研究方向为PVC热稳定剂。E-mail:<email>838842587@qq.com</email>。|陈祥迎,教授,研究方向为PVC热稳定剂、电化学储能材料。E-mail:<email>chenxy@hfut.edu.cn</email>。
  • 基金资助:
    安徽省2018年重点研究与开发计划(1804a09020066)

Preparation and properties of a new PVC auxiliary heat stabilizer——magnesium acetylacetonate

Xiaobin LI1(),Ying CHEN1,Chengcheng HU1,Xiangying CHEN1(),Ping LI2,Xiansheng HUANG2   

  1. 1. College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
    2. Anhui Jiaxian Functional Auxiliaries Co., Ltd., Bengbu, 233010, Anhui, China
  • Received:2018-06-22 Revised:2018-12-25 Online:2019-04-05 Published:2019-04-05
  • Contact: Xiangying CHEN

摘要:

以氢氧化镁[Mg(OH)2]和乙酰丙酮为原料,乙醇为溶剂,通过一步异相沉淀转化法制备配合物乙酰丙酮镁[Mg(acac)2],用作聚氯乙烯(PVC)辅助热稳定剂。首先,采用XRD、FTIR、TG对产物进行了结构表征,然后通过静态热老化试验和刚果红试验,对乙酰丙酮镁的热稳定性能进行研究。结果表明,成功制备出产物乙酰丙酮镁,且含有2个结晶水;在PVC中,当主效热稳定剂与辅助热稳定剂的质量比为3∶5时,PVC 的热稳定时间长达57min。该生产技术克服了乙酰丙酮镁传统合成方法产率低、操作过程复杂、污染等缺点,制备的产物乙酰丙酮镁与主效热稳定剂具有良好的协同作用,可以有效提高PVC的热稳定性能。

关键词: 乙酰丙酮镁, 配合物, 优化, 制备, PVC热稳定剂

Abstract:

Magnesium acetylacetonate used as a polyvinyl chloride (PVC) auxiliary heat stabilizer was synthesized from magnesium hydroxide [Mg(OH)2] and acetylacetone as raw materials and ethanol as solvent by one-step heterogeneous precipitation conversion technology. The as-prepared magnesium acetylacetonate was characterized by XRD, FTIR and TG-TGA, and its thermal stability was studied by static thermal aging and Congo red test paper.The results show that the prepared product is magnesium acetylacetonate and contains two crystalline water. In PVC, when the mass ratio of the main thermal stabilizer and the auxiliary heat stabilizer is 3∶5, the thermal stability time of PVC is up to 57min. The production technology overcomes the disadvantages of low yield, complex operation and pollution of the traditional method of synthesis of magnesium acetylacetonate. The prepared product has a good synergistic effect with the main heat stabilizer, and can effectively improve the thermal stability of PVC.

Key words: magnesium acetylacetonate, complex, optimization, preparation, PVC heat stabilizer.

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