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GB/T 46831-2025 Active
GB/T 46831-2025 Plastics—Determination of isotactic index for polypropylene(PP)—Low-resolution nuclear magnetic resonance spectrometry
Abstract
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.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 46831-2025 |
| CCS | Basic standards and general methods for synthetic resins and plastics |
| ICS | Thermoplastic plastics |
| Implement Date | 2026-07-01 |
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