GB/T 6595-1986
Replaced
GB/T 46831-2025
Active
National standards
GB/T 46831-2025 Plastics—Determination of isotactic index for polypropylene(PP)—Low-resolution nuclear magnetic resonance spectrometry
GB/T 46831-2025 Plastics—Determination of isotactic index for polypropylene(PP)—Low-resolution nuclear magnetic resonance spectrometry
Price:
$ 36.00
Basic Information
Standard Code:
GB/T 46831-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Basic standards and general methods for synthetic resins and plastics
ICS Name:
Thermoplastic plastics
Publish Date:
2025-12-02
Implement Date:
2026-07-01
Pages:
16 pages
Scope
This document describes the method of determining the isotactic index of polypropylene (PP) using a low-resolution nuclear magnetic resonance (LR-NMR) instrument.
This document is applicable to the thermoplastic propylene homopolymers (PP-H) specified in GB/T 2546.1.
This document is not applicable to blends.
Development Information
Referenced Standards
Adopt standards
ISO 24076:2021
Related Standards
GB/T 6598-1986
Active
GB/T 6598-1986 Determination of weight-average molecular weight of polystyrene standards by low angle laser light scattering method
GB/T 6599-1986
abolished_transferred
GB/T 6599-1986 Determination of molecular weight averages and molecular weight distribution of polystyrene standards by steric exclusion chromatography
GB/T 8330-1987
Replaced
GB/T 8330-1987 Method for the determination of true density of ion exchange resins in wet state
GB/T 8331-1987
Replaced
GB/T 8331-1987 Method for the determination of bulk density of ion exchange resins in wet state
GB/T 8324-1987
Replaced