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Citation: Song Yongxian, Peng Xinsheng, Li Rongxian. STUDY ON THE LATENT ACCELERATOR FOR EPOXY RESIN Ⅱ.EFFECT OF THE ACCELERATOR ON PHYSICAL PROPERTIES OF CURED RESIN[J]. Chinese Journal of Applied Chemistry, ;1990, 7(3): 29-32. shu

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

1.
Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received Date: 30 June 1989
Available Online: 26 October 1989
Fund Project:

The effect of a novel latent accelerator, neodymium acetylacetonate(AD), on the proper-ties of cured resin for bisphenol A epoxy resin(E-44)/Tung oil acid anhydride(TOA) system is reported in this paper. Presence of AD decreased the gel time at 150℃ and increased the activation 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 T_g values and depressed the dielectric loss Tanδ at 130℃.155℃ of Nd ion-containing epoxy. The mechan-ical properties were raised as compared with the control. It might be due to the special electron structure of rare-earth elements which makes the epoxy system having higher T_g owing to the higher crosslink density or more homogenoous network structure.
- epoxy resin,
- latent accelerator,
- physical property
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