GB/T 43297-2023
Fourier transform infrared spectroscopy and UV/visible spectroscopy methods for evaluating photoaging properties of plastic polymers (English Version)
- Standard No.
- GB/T 43297-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 43297-2023
- Introduction
Core Technology and Method Principles
This document is modified to adopt the ISO 10640:2011 international standard, and newly added normative reference documents such as GB/T 1844.1. By detecting the changes in characteristic peaks such as carbonyl (1714 cm-1) through FTIR spectroscopy, and combining UV/Vis spectroscopy to analyze the evolution of chromophores, a correlation model between chemical changes and physical property degradation is established.
Key technical differences and innovations
Comparison dimensions ISO 10640:2011 GB/T 43297-2023 Standard structure Introduction explains the principle Independent Chapter 1 Clarifies the principle Scope of application Note form description Main text extensionHeat aging application Operation specification Note 2 in 4.2.3.1 Upgraded to 5.2.3.1 main text
Analysis of key influencing factors
Dual action mechanism of water
Standard 5.2.3.1 specifies in detail the effect of water on photoaging:
- Chemical effect: Enhance the photocatalytic activity of pigments such as TiO2 and accelerate the hydrolysis reaction
- Physical effect: Expansion-contraction cycle leads to microcracks (verified by immersion in deionized water at 40-60℃)
Interference from additive migration
5.2.3.2 requires that the interference of low molecular weight components such as surface antistatic agents on IR testing be eliminated by ethanol washing.
Typical Application Cases
PE-LD Film Evaluation
Appendix A shows that the FTIR spectra of 7-year natural aging and artificial accelerated aging (90 W/m2@60℃) in Clermont-Ferrand, France are highly consistent, and the growth rate of the 1713 cm-1 carbonyl peak is as high as 1:2100 (h:year).
ABS Material Analysis
Verified by the changes in the characteristic peaks of 967 cm-1 (butadiene) and 1732 cm-1 (carbonyl):
- Drying conditions: 160h artificial aging ≈ 60d natural aging
- Water immersion conditions: aging rate increased by 30%
GB/T 43297-2023 history
- 2023 GB/T 43297-2023 Fourier transform infrared spectroscopy and UV/visible spectroscopy methods for evaluating photoaging properties of plastic polymers