Synthesis and Properties of Waterborne Epoxy Composite Emulsifier

doi:10.3724/SP.J.1095.2014.30213

Chinese Journal of Applied Chemistry

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Synthesis and Properties of Waterborne Epoxy Composite Emulsifier

HUANG Juanping, LI Sufang^*, LI Jiao, KANG Meng, WANG Congcong, LIU Tingting

(State Key Laboratory of Chemo/Biosensing and Chemometrics,College of
Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)

Received:2013-05-02 Revised:2013-07-03 Published:2014-03-10 Online:2014-03-10
Contact: Li sufang

Abstract

Abstract: A novel anionic epoxy emulsifier EP-D was synthesized by epoxy resin E-44, 2-amino-5-sulfobenzoic acid, ethylene glycol monobutyl ether and butyl alcohol. Nonionic epoxy emulsifier EP-PEG was synthesized from E-44 and poly(ethylene glycol)(PEG6000) with molar ratio of 2∶1. EP-D/EP-PEG composite emulsifiers were obtained by mixing EP-D and EP-PEG with different mass ratio. The emulsifying properties and emulsion surface tension, electric conductivity, the Zeta potential and particle size of colloidal particles were studied when the addition amount of EP-D/EP-PEG and EP-PEG was 6%~12% respectively. The best performance of epoxy emulsion was observed when the mass ratio of EP-D and EP-PEG was 3∶5, and their total quantity reached to 9%. Compared with EP-PEG emulsion system, EP-D/EP-PEG emulsion system led to less emulsifier dosage, better emulsion spreadability, higher stability, and elevation of the solid content by more than 10% in phase inversion, The Zeta potential of the epoxy colloidal particles of reached to -41.9 mV. The emulsion particles size decreased to 342 nm. The emulsion surface tension decreased to 25.5 mN/m. The viscosity was reduced to 14 mPa·s. These indicated that a waterborne epoxy emulsion with good stability and high solid content can be obtained from EP-D/EP-PEG composite emulsifier by mixing new synthetic emulsifiers EP-D and EP-PEG.

Key words: emulsifying, waterborne epoxy emulsion, mixin, stability

CLC Number:

O648

HUANG Juanping, LI Sufang*, LI Jiao, KANG Meng, WANG Congcong, LIU Tingting. Synthesis and Properties of Waterborne Epoxy Composite Emulsifier[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30213.

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Synthesis and Properties of Waterborne Epoxy Composite Emulsifier

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