Use of polyacrylic acid macromolecules to improve stiffness and adhesive bond durability of zinc phosphate conversion precoatings

Conference · Fri Nov 01 04:00:00 EST 1985

OSTI ID:6306257

Sugama, T; Kukacka, L E

The electrostatic internal diffusion and segmental chemisorption of polyelectrolyte macromolecules, either on newly precipitated crystal nuclei or on crystal growth sites during primary zinc phosphate (Zn.Ph) conversion processes applied to cold-rolled steel surfaces, contribute significantly to the controllability of the Zn.Ph crystal dimensions. This results in an improvement in the stiffness and ductility of the normally brittle Zn.Ph layers. The polymer-polymer chemical bonding, produced at the polymer topcoat-to-polyelectrolyte-Zn.Ph precoat interfacial joints, plays a key role in achieving a long-term bond durability of the metal-adhesive joints upon exposure to chemically corrosive environments.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6306257
• Report Number(s): BNL-37381; CONF-851263-1; ON: DE86006237
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ADHESION
ALLOYS
CHEMICAL REACTIONS
CHEMISORPTION
COATINGS
CORROSION PROTECTION
ESTERS
IRON ALLOYS
IRON BASE ALLOYS
LAYERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POLYACRYLATES
POLYMERS
POLYVINYLS
PROTECTIVE COATINGS
SEPARATION PROCESSES
SORPTION
STEELS
ZINC COMPOUNDS
ZINC PHOSPHATES