期刊
PROGRESS IN ORGANIC COATINGS
卷 89, 期 -, 页码 75-81出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2015.08.003
关键词
Polyester; ltaconic acid; Acrylic-modified polyester; Baking finishes
Itaconic acid based unsaturated polyesters have been synthesized followed by their co-polymerization with commonly used acrylic monomers. Series of such acrylic-modified polyesters have been prepared and examined their physical and performance characteristics. Apart from determining various physico-chemical characteristics, these resins were also characterized for their molecular weight distribution and grafting of acrylic on polyester using gel permeation chromatography (GPC) and FT-IR techniques respectively. The performance of cured film and the effect on cross-linking density of the synthesized acrylic-modified polyesters were investigated through dynamic mechanical analyzer (DMA) using melamine formaldehyde resin as a cross-linker at elevated temperature. The resultant polymeric film showed excellent hardness, flexibility, impact resistance, adhesion, and cupping with improved weathering resistance over non-acrylated polyester. (C) 2015 Elsevier B.V. All rights reserved.
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