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

塑料动态力学性能的测定第11部分: 玻璃化转变温度

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

April 1, 2023

Scope

GB/T 33061.11-2022 is the English-translated version of 塑料动态力学性能的测定第11部分: 玻璃化转变温度.

GB/T 33061.11-2022 is the Chinese standard "Plastics - Determination of dynamic mechanical properties - Part 11: Glass transition temperature".

Its scope clause reads: This document describes a method for determining the glass transition temperature (Tg) by measuring dynamic mechanical properties at a constant heating rate. glass transition transition temperature is the transition from a hard and relatively brittle glassy state to a highly elastic or viscous state in an amorphous polymer or in the amorphous region of a partially crystalline polymer corresponding temperature.

This document applies to unreinforced and filled polymers, foams, rubbers, adhesives and fibre-reinforced plastics/composites.

The method described is limited to For materials that are stable above Tg, that is, 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 connected to the sample to be tested Touch, so what is measured is the temperature of the environment around the sample to be tested.

The test results may vary with the heating rate, therefore, the application of a method To consider the effect of thermal hysteresis on the experimental data. Its clauses include terms and definitions.

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Document preview — GB/T 33061.11-2022

National Standard of the People's Republic of China

ICS: 83.080.01
Classification: G 31

Issued by: State Administration for Market Regulation, China National Standardization Administration

foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions

1 Scope

This document describes a method for determining the glass transition temperature (Tg) by measuring dynamic mechanical properties at a constant heating rate. glass transition transition temperature is the transition from a hard and relatively brittle glassy state to a highly elastic or viscous state in an amorphous polymer or in the amorphous region of a partially crystalline polymer corresponding temperature.

This document applies to unreinforced and filled polymers, foams, rubbers, adhesives and fibre-reinforced plastics/composites. The method described is limited to

For materials that are stable above Tg, that is, 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 connected to the sample to be tested

Touch, so what is measured is the temperature of the environment around the sample to be tested. The test results may vary with the heating rate, therefore, the application of a method

To consider the effect of thermal hysteresis on the experimental data.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 2035 Plastic terms and their definitions (GB/T 2035-2008, ISO 472.1999, IDT)

GB/T 33061.1 Determination of dynamic mechanical properties of plastics Part 1.General rules (GB/T 33061.1-2016, ISO 6721-1.

2011, MOD)

3 Terms and Definitions

The following terms and definitions defined in GB/T 2035 and GB/T 33061.1 apply to this document.

3.1 TM"

The temperature corresponding to the peak of the loss modulus-temperature curve.

Note 1.The unit is Celsius (°C).

Note 2.See data point 1 in Figure 1.

3.2 TM'

The temperature corresponding to the inflection point of the storage modulus-temperature curve.

Note 1.The unit is Celsius (°C).

Note 2.See data point 2 in Figure 1. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 472.1999 · ISO 6721

Cited by

GB/T 34903.1-2026Petroleum, petrochemical and natural gas industries - Non-metallic materials in contact with media related to oil and gas production - Part 1: Thermoplastics

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