Thermoset

Description

A polymer that, once fused, cannot be resoftened with heat. Thermoset polymers are usually insoluble in most solvents. Examples of thermoset polymers are epoxies, silicones, and phenolics along with some polyesters and polyurethanes.

Physical Properties for Selected Thermoset Resins

polymer	Tg ©	Ref.index (film)	Density	Tensile strength (1000 psi)	Flexural strength (1000 psi)	Compres- sive strength (1000 psi)	Elongtaion at break (%)	Shrinkage (%)	water absorption (24 hrs.)
casein	35	1.33 (sol'n); 1.4-1.5 (film)	1.35
chlorinated rubber		1.55-1.60	1.24
epoxy resin	90-180	1.56	1.1-1.4	4-13	13-21	15-21.5	2.6	0.1-0.4	0.01-0.10
melamine formaldehyde		1.65	1.40-1.48	7-9	11-14	40-45		1.0-1.5	0.01-1.3
phenol formaldehyde		1.70	1.30-1.86	6-9	11-17	12-15	1.5-2.0	1.0-1.2	0.1-2.0
polyimide	150-200		1.42-1.90	5-27	7.1-49.5	4.7-40	<10	0.1-0.3	0.3-0.4
polyisoprene	-70 to - 74	1.53	0.92
polyxylylene	60-100	1.669
siloxane	-125	1.41	1.30-1.34	4-8	9-19	9-15		1-1.5
polyester	70	1.55	1.12-1.46	6-12	8.5-18.5	13-36.5	20	2-8

Synonyms and Related Terms

termoestable (Esp.); thermodurci (Fr.); resina termoindurente (It.); resina termoendurecível (Port.); thermosetting resin;

For easy printing or to download

Physical Properties for Selected Thermoset Resins

Resources and Citations

• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 789
• Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
• Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
• Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
• Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
• Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000