HG/T 2365-1992 (English Version) PDF

Scope: This standard specifies the method for determining the moisture content of polyethylene terephthalate and polybutylene terephthalate pellets. This standard is applicable to the determination of moisture content within the range of 0.002% to 0.05% m/m). This standard does not apply to polyethylene (butylene) terephthalate samples containing volatile compounds other than water in quantities large enough to have a significant impact on the vapor pressure at room temperature. Moisture content is very important for material processing. To prevent material degradation during processing, the moisture content should be below a few parts per ten thousand. In dry polyethylene terephthalate pellets, errors caused by the presence of a small amount of acetaldehyde can be tolerated. Some method, such as gas chromatography, should be used regularly to check the presence of a large number of volatile compounds. This kind of inspection is useful for new or New grade materials are especially needed.

HG/T 2365-1992 history

1992 HG/T 2365-1992 Determination of moisture content in polyalkylene terephthalate pellets