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Citation: ZHANG Kai, ZHANG Li. Preparation and Properties of Siloxane Modified Epoxy-styrene-acrylic Aqueous Dispersion[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 899-903. shu

Preparation and Properties of Siloxane Modified Epoxy-styrene-acrylic Aqueous Dispersion

ZHANG Kai ,
ZHANG Li ^,

1.
Department of Chemistry, South China Normal University, Guangzhou 510631

Corresponding author: ZHANG Li,
Received Date: 22 October 2004
Available Online: 27 March 2005
Fund Project: 广东省科委重点攻关项目(2KMO6202) (2KMO6202)广州市高新技术(2000-Z-086-01)资助项目 (2000-Z-086-01)

Stable epoxy-styrene-acrylic aqueous dispersion modified with siloxane was prepared with a two-step synthetic method.FTIR,SEM and TGA were used to characterize the structure and property of the product.The results show that the epoxy was chemically modified by styrene-acyrlic and γ-aminopropyl methyl diethoxysilone (A-2100).Its microphase structure was formed before curing.The membrane has a fine microphase structure,and the size of the microphase region was 0.2~0.5 μm.At the same time it had similar thermal stability as the epoxy-styrene-acrylic copolymer,and the mass loss was 5% at 181.The membrane exhibited good chemical resistance.The viscosity of the dispersion did not change greatly after 180 d.
- siloxane,
- modification,
- epoxy-styrene-acrylic resin,
- aqueous dispersion,
- property
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