STRUCTURE PROPERTY STUDIES OF MF-CURED POWDER COATINGS

被引：15

作者：

HIGGINBOTTOM, HP

BOWERS, GR

GRANDE, JS

HILL, LW

机构：

[1] Monsanto Chemical Company, Springfield, MA 01151

来源：

PROGRESS IN ORGANIC COATINGS | 1992年 / 20卷 / 3-4期

关键词：

19;

D O I：

10.1016/0033-0655(92)80021-N

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Thermoset powder coating films have been prepared from commercial hydroxy-functional polyester resins (PE) by crosslinking with toluene sulfonamide-modified melamine formaldehyde crosslinkers (TS-MF). Solvent resistance, hardness and impact resistance determinations have been made on films cured over a wide range of temperatures and with numerous variations in composition and characteristics of PE and TS-MF components. Cure behavior, as revealed by these 'property profiles', is discussed in terms of component structures and curing reactions. Selected films from property-profile studies have been characterized by dynamic mechanical analysis (DMA). Properties are compared for solvent-applied and powder-applied films prepared from the same compositions. Unexpected and potentially important new findings are reported on catalysis and pigment reinforcement. Crosslink densities from DMA and theory are compared.

引用

页码：301 / 323

页数：23