Effect of aging on taut rubber diaphragms

H. B. Hendrickson, D. H. Strother
naca-tn-409
Feb 1932


As part of an investigation of special compositions of rubber suitable for use as diaphragms for aircraft instruments, six samples were used as taut diaphragms in instruments and allowed to age for five years. Two of the instruments were in operating condition after this period of time and one had remarkably little change in performance. In making the rubber tetraethyl thorium disulfide was employed as a vulcanizing agent.

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