ASTM D Standard Test Method for Water Absorption of Rigid Cellular Plastics. ASTM D Water Absorption – Designation: D – 01 Standard Test Method for Water Abs. ASTM D 06 Water Absorption Test Method – Download as PDF File .pdf), Text File .txt) or read online.
|Published (Last):||26 August 2014|
|PDF File Size:||20.46 Mb|
|ePub File Size:||11.88 Mb|
|Price:||Free* [*Free Regsitration Required]|
ASTM D – 06 Standard Test Method for Water Absorption of Rigid Cellular Plastics
This test method provides the option to ignore this variable with cellular plastics estimated to have an average cell diameter of 0. Note 4 — The increase in volume that occurs with some foams when immersed is accounted for in Procedure A. In this procedure the only submerged measurement required is a nal weighing taken after the h immersion period. A superscript epsilon e indicates an ashm change since the last asrm or reapproval. Conditions used shall be agreed upon between the purchaser and the supplier.
ASTM D2842 – 12
Adjust the water level to maintain a 5. It is intended for use in specifications, product evaluation, and quality control. Balance must have provision for attaching wire sling below balance platform for making submerged weighings. To accommodate these larger specimens, the test d28842 specied previously must be modied accordingly. Combination of Eq X1. Weigh to the nearest 0. Repeat 4-h conditioning intervals until 4 specimens reach constant weight as indicated by less than 0.
The approximate dry weight is to be g. Users of this test method should apply astk principles outlined in Practice Satm to generate specic to their astmm and laboratory or between specic laboratories.
Development of this test method has taken into account the axtm serious of the possible sources of error. First count the number of cells or cell walls which intersect the 3.
For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratories which tested them.
Materials that do not exhibit either of these characteristics shall be evaluated by Procedure B. Focus the projector on the wall or screen so that sharp image shadowgraph results. The relationship between t and the average cell diameter d8, appearing at the plane of the cut surface may be calculated as follows: Materials that do not exhibit either of these characteristics should be evaluated by Procedure B. This is intended for materials normally produced and sold with natural or laminated 6 Hobart Modelan electrically operated slicer available from the Hobart Manufacturing Co.
Any test specimen preparation, conditioning, dimensions, or testing parameters covered in the materials specification, or both, shall take precedence over those mentioned c2842 this test method.
This procedure shall be used for materials that exhibit this type of behavior. Optimum slice thickness will vary with the average cell size of the foam with larger cell foams requiring thicker slices. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
It is obtained by pooling astj within-laboratory standard deviations of the test results from all of the participating laboratories: The true specimen volume is determined in Procedure A as the measured volume minus the volume of surface cells opened by cutting. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve asrm and if not revised, either reapproved or withdrawn. This correction is not required in Procedure B since the true specimen volume is determined by direct e2842.
A number in parentheses indicates the year of last reapproval. D — 01 Standard Test Method for Water Absorption of Rigid Cellular Plastics1 This standard is issued under the xed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of sstm revision.
The true specimen volume is determined in Procedure A as the measured volume minus the volume of surface cells opened by cutting. Chemistry is the Science Behind Sustainability — the products, technologies and innovations enabled zstm the chemical industry are essential to a sustainable future. Development of this test method has taken into account the most serious of the possible sources of error. Results by this test method cannot be used to compare the resistance of cellular plastics to water vapor transmission and 5 Available from American National Standards Asgm, 11 W.
If the surface-to-volume ratios d842 the test specimens and the corresponding products are different, the test results may be misleading. Since any conveniently sized specimen can only be obtained by some cutting operation, a fraction of the closed cells will be opened by specimen preparation and will be included as open cells. Originally astj as D — Material Extruded Polystyrene Thickness 3 in.
If there are no material specications, then the default conditions apply. This is accounted for by basing all buoyant force calculations on the volume of the wet specimen at the conclusion of the immersion period. For convenience, remove the surface water from the specimen with a towel before measuring. It is applicable to specic end-use design requirements only to the extent that the end-use conditions are similar to the immersion period normally 96 h and 5. Material Polyisocyanurate Thickness 3 in.
This is d2824 for by basing all buoyant force calculations on the volume of the wet specimen at the conclusion of the immersion period.
ACC is investing in research to improve understanding of how chemicals impact health and the environment. Reagents and Materials 7. The principles of If ast feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
This test method accounts for this error in that all calculations are based on the true specimen volume. This test method provides the option to ignore this variable with cellular plastics that have an average cell diameter of 0. Then divide the length of the line 3. An acceptable procedure, in this case, is to take cell-size slices from two perpendicular planes of the test specimen.
A hole in the platform must be provided at an appropriate location to accommodate wire sling from balance to jig.