1.1 This test method sets forth the standard procedure for determining the weight of water absorbed by a molded test specimen or a specimen made in the form of a sheet, tube or bar, as a result of immersion in boiling water for a period of time. given time and at a specified temperature. A variant is included which indicates the method to follow when the presence of soluble matters in water is to be taken into account. 1.2 The method can be applied to all types of plastics, with the exception of those that soften so much at a temperature of 100° C that they can completely lose their shape. The method is applied to cast materials, compression and injection moldable materials, extrusion composites, rigid and flexible materials, laminated materials, bars and tubes. Are you particularly? indicated for aminoplasts. 1.3 Comparis n of boiling water absorption between plastic materials can only be made when test samples of identical dimensions are used.
NORVEN 47-4-1963 history
1963NORVEN 47-4-1963 Determinants of boiling water absorption strength in plastics