From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Note on the effect of fuels and lubricating oils on the lining material of 'Superflexit' tubing.
| Identifier | ExFiles\Box 88\5\ scan0205 | |
| Date | 1st July 1929 | |
| Ch.28 APPENDIX I to R.A.E.Report No.E.2861. Note on the effect of some fuels and lubricating oils on the lining material of "Superflexit" tubing. - By - J.D.F.West, B.A., A.I.C. Ch.dept.ref:- Ch.220/48. July 1929 The sample as received was a thin sheet of transparent pale yellow material with a very crinkled surface. It was flexible and could be rolled into a tight ball and unrolled again without developing cracks. Samples about 3 inches long by 1 inch across were cut from the sheet and boiled with water, benzol, aviation spirit and T.E.L. doped spirit for 5 1/2 hours under reflux condensers and then allowed to stand overnight (a further 17 hours) immersed in the cold liquid. The samples were then removed and examined. The sample treated with water appeared to have swelled very slightly, had lost its crinkled appearance but was still quite a tough film. Benzol had produced no noticeable change in appearance or flexibility. The samples treated with aviation spirit and T.E.L. doped spirit were still tough and fairly flexible but could no longer be rolled into a tight ball without developing cracks. Two further samples were treated with castor oil and P4. summer grade oil at 150°C. for about 10 minutes. During the heating from about 120°C. upwards, bubbles of vapour escaped from the surfaces of the samples and condensed on the cool sides of the tubes in which the experiment was carried out. This condensed vapour appeared to be largely, if not entirely, water. The loss of vapour appeared to be more rapid from the sample immersed in castor than from the P4. oil. After 10 minutes at 150°C. the samples were removed from the oil and examined. The / | ||