ISO 1817:2015 pdf download.Rubber, vulcanized or thermoplastic-Determination of the effect of liquids.
5 Test liquids
The choice of the test liquid shall depend on the purpose of the test.
When information is required on the service behaviour of a vulcanized or thermoplastic rubber in contact with a particular liquid, then this liquid shall, if possible, be chosen for the test, Commercial liquids are not always constant in composition, and the test shall, whenever practicable, include a reference material of known characteristics. Any abnormal results due to unexpected variations in the composition of the commercial liquid will thus become apparenL It might then be necessary to set aside a bulk supply of the liquid for a particular series of tests.
Mineral oils and fuels are liable to vary considerably In chemical composition even when supplied at a recognized specification. The aniline point of a mineral oil gives some indication of its aromatic content and helps to characterize the action of the oil on rubber, but the aniline point alone is not sufficient to characterize a mineral oil; other things being equal, the lower the aniline point, the more pronounced the action. If a mineral oil is used as test liquid, the test report shall include the density, refractive index. viscosity and aniline point or aromatic content of the oil.
The choice of the test liquid shall depend on the purpose of the test.
When information is required on the service behaviour of a vulcanized or thermoplastic rubber in contact with a particular liquid, then this liquid shall, if possible, be chosen for the test, Commercial liquids are not always constant in composition, and the test shall, whenever practicable, include a reference material of known characteristics. Any abnormal results due to unexpected variations in the composition of the commercial liquid will thus become apparenL It might then be necessary to set aside a bulk supply of the liquid for a particular series of tests.
Mineral oils and fuels are liable to vary considerably In chemical composition even when supplied at a recognized specification. The aniline point of a mineral oil gives some indication of its aromatic content and helps to characterize the action of the oil on rubber, but the aniline point alone is not sufficient to characterize a mineral oil; other things being equal, the lower the aniline point, the more pronounced the action. If a mineral oil is used as test liquid, the test report shall include the density, refractive index. viscosity and aniline point or aromatic content of the oil.
