Technical rept. Aug 1954-Oct 1954
AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH MATERIALS LAB
Pagination or Media Count:
Elastomers have been prepared from an experimental liquid polymer formulation derived from a condensation product of mercaptoacetic acid and triethylene glycol. Two general types of these elastomers are discussed one was obtained by reaction of the liquid polymer with organic and inorganic peroxides, the other by reaction of terminal mercapto groups with unsaturated aldehydes. Selected specimens of each type of elastomer were successfully compounded and vulcanized using conventional rubber processing equipment. The behaviour of these vulcanizates in fuels and synthetic ester base oils has been studied along with the effects of aging at elevated temperatures. The vulcanized dithiopolyesters showed excellent resistance to the swelling action of 7030 iso-octanetoluene fuel mixtures. Ester base oils of the MIL-78O8A type were found to cause shrinkage. Elevated temperatures 350 F consistently brought about rapid deteri oration of both vulcanized and raw polymer stocks.
- Polymer Chemistry
- Elastomers and Rubber