Polyvinyl formal
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Description
A Thermoplastic resin made by the condensation of Polyvinyl alcohol with Formaldehyde. Polyvinyl formal is a colorless, flexible tough solid. It can be molded, extruded, or cast and is resistant to greases, oils, and alkalis. It is used as a structural adhesive for bonding aircraft components.
Synonyms and Related Terms
poly(vinyl formal); polivinilformaldehido (Esp.); Formvar; polyvinyl acetal
Physical and Chemical Properties
- Soluble in glacial acetic acid, Cellosolve acetate, chloroform, diacetone alcohol, phenol, pyridine, THF, toluene.
- Resistant to alkalis, greases and oils.
- Density = 1.3 g/ml
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 848
- Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Conservation Materials Ltd., Catalog