Designation: D – 98 1 This test method is under the jurisdiction of ASTM Committee D on See Annual Book of ASTM Standards, Vol Water Absorption 24 Hour/Equilibrium ASTM D Scope: Water absorption is used to determine the amount of water absorbed under specified conditions. ASTM D Standard Test Method for Water Absorption of Plastics. ASTM D Edition, July 10, Complete Document. Standard Test Method for.
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Standards can be obtained from appropriate standard authorities. Water absorption is used to determine the amount of water absorbed under specified conditions. Inspection Validating the specifications, value and safety of your raw materials, products and assets. With nonhomogeneous materials, such as laminated forms, the rate of water absorption may be widely different through each edge and surface. Immediately upon cooling the specimens are weighed. Assurance Testing Inspection Certification.
Water Absorption ASTM D570
Assurance Enabling you to identify asttm mitigate the intrinsic risk in your operations, supply chains and business processes. Send us a request Wilton UK: Validating the specifications, value and safety of your raw materials, products and assets.
Link to Active This link will always route to the current Active version of the standard. Time to saturation is strongly dependent on specimen thickness. Water absorption is expressed as increase in weight percent.
ASTM D – 98() Standard Test Method for Water Absorption of Plastics
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The values stated in parentheses are for information only. This test method is intended to apply to the testing of all types of plastics, including cast, hot-molded, and cold-molded resinous products, and both homogeneous and laminated plastics in rod and tube form and in sheets 0. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.
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Factors affecting water absorption include: Certification Formally confirming that your products and services meet all trusted external and internal standards.
For the water absorption test, the specimens are dried in an oven for a specified time and temperature and then xstm in a desiccator to cool. The data sheds light on the performance of the materials in water or humid environments.
Two inch diameter disks, 0.
ASTM D – 98 Standard Test Method for Water Absorption of Plastics
For materials of widely varying density, relation between water-absorption values on a volume as well as a weight basis may need to be considered. Need help or have a question? Historical Version s – view previous versions of standard. Consequently, attempts to correlate water absorption with the surface area must generally be zstm to closely related materials and to similarly shaped specimens: For example, Table 1 shows the time to approximate time saturation for various thickness of nylon The effect upon these properties of change in moisture content due to water absorption depends largely on the type of exposure by immersion in water or by exposure to high humidityshape of the part, and inherent properties of the plastic.
Even for otherwise homogeneous materials, it may be slightly greater through cut edges than through molded surfaces. Specimens are removed, patted dry with a lint free cloth, and astk. Evaluating how your products asmt services meet and exceed quality, safety, d50 and performance standards. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.