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Citation: HONG Xiao-Bin, XIE Kai, XIAO Jia-Yu. Curing Reaction of Organic Silane Modified Bisphenol F Epoxy Resin[J]. Chinese Journal of Applied Chemistry, ;2007, 24(11): 1263-1267. shu

Curing Reaction of Organic Silane Modified Bisphenol F Epoxy Resin

1.
College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073

Corresponding author: HONG Xiao-Bin,
Received Date: 20 December 2006
Available Online: 30 March 2007
Fund Project: 国家"八六三"高技术资助项目(2002AA333140) (2002AA333140)

An novel organic silane, 3,3',3"-trihydroxyltriphenoxy silane triglycidyl ether was synthesized. Curing behavior of the organic silane and modified bisphenol F epoxy was studied. The modifier has a lower reaction velocity than bisphenol F epoxy. The curing temperature range of organic silane containing 2% 2,4-Limidazol is 20℃ narrower than that of bisphenol F epoxy. Activation energy of 2,4-limidazol/organic silane/bisphenol F epoxy system was calculated to be 50.53 kJ/mol by Kissinge method, lower than that of unmodified bisphenol F system(66.68 kJ/mol). The frequency factor is lower also, which results in a lower velocity constant. The modified bisphenol F epoxy has a narrower curing temperature range, indicating that it can be cured more effectively. 3,3',3"-Trihydroxyltriphenoxy silane triglycidyl ether can improve the properties of the cured epoxy resin, the thermal expansion coefficient below T_g is reduced by 18.8%, the internal stress is decreased by 22.8% and the crack resistance index is increased by 52.2%. Meanwhile, T_g temperature is hardly decreased
- bispenol F epoxy resin,
- organic silane,
- modification,
- curing kinetics,
- property
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