应用化学 ›› 1990, Vol. 0 ›› Issue (3): 39-32.

• 研究论文 • 上一篇    下一篇

环氧树脂潜伏性固化促进剂的研究——Ⅱ.促进剂对固化物性能的影响

宋永贤, 彭新生, 李荣先   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1989-06-30 修回日期:1989-10-26 出版日期:1990-06-10 发布日期:1990-06-10
  • 基金资助:
    中国科学院科学基金

STUDY ON THE LATENT ACCELERATOR FOR EPOXY RESIN Ⅱ.EFFECT OF THE ACCELERATOR ON PHYSICAL PROPERTIES OF CURED RESIN

Song Yongxian, Peng Xinsheng, Li Rongxian   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-06-30 Revised:1989-10-26 Published:1990-06-10 Online:1990-06-10

摘要: 对双酚A环氧树脂/桐油酸酐/乙酰丙酮钕体系的热固化及其产物性能,用热分析,介电损耗和动态力学等手段进行了研究。结果表明,乙酰丙酮钕除对固化具有潜伏性促进作用外,尚可使固化物的物理性能明显提高。

关键词: 环氧树脂, 潜伏性促进剂, 物理性能

Abstract: The effect of a novel latent accelerator, neodymium acetylacetonate(AD), on the properties of cured resin for bisphenol A epoxy resin(E-44)/Tung oil acid anhydride(TOA)systemis reported in this paper. Presence of AD decreased the gel time at 150℃ and increased theactivation energy with increasing amount of AD. The E-44/TOA/AD system displayed bet-ter storage stability at 40℃ than the control. The incorporation of AD into the epoxy resin caused an increase in the Tg values anddepressed the dielectric loss Tano at 130℃、155℃ of Nd ion-containin g epoxy. The mechanical properties were raised as compared with the control. It might be due to the specialelectron structure of rare-earth elements which makes the epoxy system having higher Tg owing to the higher crosslink density or more homogenoous network structure.

Key words: epoxy resin, latent accelerator, physical property