Plastics—Determination of isotactic index of polypropylene (PP) thermoplastics—Extraction method

This standard specifies an extraction method for determining the isotactic index of polypropylene (PP) thermoplastics. It applies to quality evaluation, product inspection and related testing of polypropylene thermoplastics. Relevant manufacturers, testing and inspection bodies, and users may use this standard for sample extraction, isotactic-index determination and evaluation of results. The standard modifies and adopts ISO 9113:2019 and fully replaces GB/T 2412-2008; compared with the replaced standard, its scope is adjusted to polypropylene thermoplastics and the extraction method is expressly specified.