This article first appeared in Practical Engineering 1940 Vol1 No22. The information contained herein is accurate as of 1940. This article provides information on new products utilised in Engineering at the time.
Detel Chlorinated Rubber
Of great interest for the engineering, electrical, and other industries is a new chlorinated rubber product, in the form of a soft, flexible black sheeting 0.01-0.04in. thick, that has, after extensive research work, been placed on the market by Detel Products Limited, Greenford (near London).
It may be remembered that Detel is a special form of chlorinated rubber, the invention of F. C. Dyche Teague, the Technical Director of the above company, and the new sheeting is a further important development in the specialised chlorination of rubber. Hitherto the product has been sold in solution in an organic solvent for application, on the same lines as paint, to all kinds of surfaces, not only iron and steel, but also brick, stone, artificial stone, plaster, asbestos board, and wood, as a protection against atmospheric, general acidic, and other corrosion.
Resistant to Acids
For this purpose Detel, now being widely used, possesses remarkable properties since it is completely resistant, at temperatures up to about 150 deg. F., to almost all known acids, inorganic and organic, strong or dilute, such as for example sulphuric, hydrochloric, nitric, mixed acid, acetic, chromic, and even hydrofluoric, and to carbon dioxide, sulphur dioxide, and atmospheric corrosion, as well as all - organic acids.
Resistant to Alkali
Similarly, it is resistant to every known alkali in concentrated or dilute solution, such as caustic soda, caustic potash, ammonia, and salts, and to very many other corrosive and reactive substances, such as seawater, oxygen, ozone, chlorine, bromine, iodine, potassium cyanide, petroleum and tar fractions, alcohol, and methylated spirits.
Simple Method of Application
All that is necessary is to cover the surface with the sheeting, which can be stuck together in the easiest and simplest manner merely by painting a little special solvent cement at the edges, or other part, forming a completely homogeneous joint, resembling the welding of metals. The sheets can be cut with scissors to desired size and shape and attached by the cement in a few minutes.
The sheeting, unlike any form of paint, is also impervious, because in the preparation it is run between heavy rollers, and therefore no pinholes are present. Also, the material is flexible and shock resistant, like rubber, so that dents quickly disappear.