标准编号：ISO 15512:2019
中文名称：塑料 含水量的测定
英文名称：Plastics — Determination of water content
发布日期：2019-05
标准范围
This document specifies methods for the determination of the water content of plastics in the form of
powder, granules, and finished articles. These methods do not test for water absorption (kinetics and
equilibrium) of plastics as measured by ISO 62.
Method A is suitable for the determination of water content as low as 0,1 % with an accuracy of 0,1 %.
Method B and Method C are suitable for the determination of water content as low as 0,01 % with an
accuracy of 0,01 %. Method D is suitable for the determination of water content as low as 0,01 % with an
accuracy of 0,01 %. Method E is suitable for the determination of water content as low as 0,001 % with
an accuracy of 0,001 %. The stated accuracies are detection limits which depend also on the maximal
possible sample mass. The water content is expressed as a percentage mass fraction of water.
Method D is suitable for polyamide (PA), polycarbonate (PC), polypropylene (PP), polyethylene (PE), epoxy
resin, polyethylene terephthalate (PET), polyester, polytetrafluoroethylene (PTFE), polyvinyl chloride
(PVC), polylactide (PLA), polyamidimid (PAI), it is especially not recommended for samples which can
release NH3 . Methods A, B, C and E are generally suitable for all types of plastic and moisture level.
Water content is an important parameter for processing materials and is expected to remain below the
level specified in the appropriate material standard.
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