GB/T 33061.11-2022
Plastics—Determination of dynamic mechanical properties—Part 11: Glass transition temperature (English Version)

Standard No.: GB/T 33061.11-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 33061.11-2022

Scope: This document describes a method for determining the glass transition temperature (Tg) by measuring dynamic mechanical properties at a constant heating rate. The glass transition temperature is the temperature corresponding to the transition from a hard and relatively brittle glass state to a highly elastic or viscous fluid state in an amorphous polymer or in the amorphous regions of a partially crystalline polymer. This document applies to unreinforced and filled polymers, foams, rubbers, adhesives and fibre-reinforced plastics/composites. The method described is limited to materials that are stable above Tg, i.e. amorphous materials that transform into a highly elastic state or partially crystalline materials that retain their shape due to crystallization. NOTE: Tg values measured with the instrument may vary due to material properties or test setup. The temperature sensor in the DMA instrument is not in contact with the sample to be tested, so it measures the temperature of the surrounding environment of the sample to be tested. The test results may vary with the heating rate, therefore, a method is applied to consider the influence of thermal hysteresis on the test data.

GB/T 33061.11-2022 Referenced Document

GB/T 2035 Terms and definitions for plastics
GB/T 33061.1 Plastics—Determination of dynamic mechanical properties—Part 1: General principles

2022 GB/T 33061.11-2022 Plastics—Determination of dynamic mechanical properties—Part 11: Glass transition temperature