Accession Number : ADA319448

Title :   Organo-Aluminate Polymeric Materials as Advanced Erosion/Corrosion Resistant Thin Film Coatings.

Descriptive Note : Quarterly rept. no 2,

Corporate Author : TDA RESEARCH INC WHEAT RIDGE CO

Personal Author(s) : Cook, Ronald L. ; Barron, Andrew R. ; Stoffer, James O. ; Anderson, Harian

PDF Url : ADA319448

Report Date : 19 DEC 1996

Pagination or Media Count : 17

Abstract : To address the need for new environmentally compliant high performance coatings, TDA Research, Inc. (TDA) has proposed the development of a new class of high performance coating materials based on molecular composites known as carboxylato-alumoxanes. These materials consist of a boehmite particle covalent bound within a organic periphery. Functionalization of the organic groups allows incorporation of the boehmite particles into standard coating materials such as epoxies and urethanes. The presence of the bound boehmite platelets in the coatings is expected to drastically reduce diffusion rates through the films. Similar effects have been previously observed for flake or leafing pigments such as mica. Thus, the boehmite containing coatings act as barrier coatings to help prevent corrosion. However, we are not depending solely on barrier effects to minimize or prevent corrosion; we will also evaluate carboxylato-alumoxanes that contain active inhibitors covalent bound to the boehmite particles. Once class of inhibitors are phosphates which can stop corrosion by forming insoluble "noble" inorganic phosphates. We will also evaluate organic substituents based on phenoliquinone couples. Previous work has shown that tannins (i.e. polyphenols) are active corrosion inhibitors.

Descriptors :   *CORROSION INHIBITION, *BARRIER COATINGS, POLYMERS, COMPOSITE MATERIALS, COVALENT BONDS, PARTICLES, NAVAL AIRCRAFT, PAINTS, DIFFUSION, EPOXY COMPOUNDS, PIGMENTS, ORGANIC RADICALS, PHENOLS, PHOSPHATES, URETHANES, CARBOXYL RADICALS, MICA, BOEHMITE.

Subject Categories : Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE