GB/T 33047.1-2025 Active National standards

GB/T 33047.1-2025 Plastics—Thermogravimetry(TG) of polymers—Part 1:General principles

Publish Date: 2025-12-02 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 33047.1-2025

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: Plastic Composite

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Pages: 24 pages

Scope

This document describes a general method for analyzing polymers using thermal gravimetric analysis (TGA) to measure the decomposition temperature and decomposition rate of polymers, as well as the amount of volatile substances, additives, and/or fillers contained therein. This document is suitable for analyzing liquid or solid samples, as well as products that can be processed and molded into suitable sizes. This document provides multiple methods for studying the relationship between quality changes and physical effects and chemical reactions. TGA includes dynamic mode (under programmed control conditions, mass changes with temperature or time) or isothermal mode (under constant temperature, mass changes with time). TGA can be conducted in different atmospheres, such as decomposition in an inert atmosphere, avoiding the influence of oxidative degradation reactions.