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Basic data
| Standard ID | GB/T 45183-2025 (GB/T45183-2025) |
| Description (Translated English) | Plastics - Instrumental determination of radiant exposure in weathering tests - General guidance and basic test method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G31 |
| Classification of International Standard | 83.080.01 |
| Word Count Estimation | 26,299 |
| Date of Issue | 2025-01-24 |
| Date of Implementation | 2025-08-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 45183-2025: Plastics - Instrumental determination of radiant exposure in weathering tests - General guidance and basic test method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
National Standard of the People's Republic of China
ICS 83.080.01CCS G 31
Instrumental determination of radiation dose in plastic weathering test
General principles and basic test methods
Plastics-Instrumental determination of radiant exposure in weathering tests-
General guidance and basic test methods
(ISO 9370.2017, MOD)
2025-01-24 Release
2025-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface Ⅲ
Introduction...Ⅴ
1 Scope...1
2 Normative references ...1
3 Terms and Definitions 1
4 Significance and Use 6
4.1 General Principles 6
4.2 Natural Weathering-Fixed Angle or Equatorial Mount Exposure 6
4.3 Accelerated natural weathering - exposure to concentrated solar radiation using Fresnel reflective concentrators 7
4.4 Artificially accelerated climate aging and exposure to artificially accelerated radiation 7
5 Instruments 7
5.1 General Principles 7
5.2 Spectrally non-selective radiometer (see Table 1) 9
5.3 Spectral selective (UV) radiation table (see Table 2) ...9
5.4 Oscilloscope and Data Recorder 9
6 Calibration 9
6.1 General Principles 9
6.2 Standard pyranometer and working pyranometer 10
6.3 Spectrally Selective Standard Radiometer 10
6.4 Spectrally Selective Radiometer 11
6.5 Other requirements 11
7 Steps...11
7.1 Natural Weathering - Fixed Angle or Equatorial Mount Exposure 11
7.2 Accelerated Natural Weathering - Exposure to Concentrated Solar Radiation Using Fresnel Reflecting Concentrators 11
7.3 Artificially Accelerated Weathering and Exposure to Artificially Accelerated Radiation 11
8 Test Report...12
Appendix A (Informative) Comparison of Typical Broadband UV Radiometers 13
Appendix B (Informative) Spectral Mismatch of Selective Filter Pyrheometers 14
References ...17
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
This document is modified to adopt ISO 9370.2017 "General principles and basic tests for instrumental determination of radiation exposure in plastic weathering tests"
method".
The technical differences between this document and ISO 9370.2017 and their reasons are as follows.
-- ISO 9059 (see 6.2.4 and 7.2.1) has been replaced by the normative reference GB/T 14890 to adapt to my country's technical conditions,
Improve operability;
-- ISO 9060 has been replaced by the normative references GB/T 19565 and GB/T 37468 (see 5.2.1, 5.2.1.1, 5.2.2,
5.2.2.1 and 6.1.1 Note 3) to adapt to my country's technical conditions and improve operability;
--Replaced ASTM G90 (see 5.2.2.1 and 7.2.1) with the normative reference GB/T 20236 to adapt to my country's technical requirements
parts, improve operability;
-- ASTM G183 is replaced by the normative references GB/T 31156, GB/T 33698 and GB/T 33866 (see 7.1.2),
To adapt to my country's technical conditions and improve operability;
-- Added normative references to GB/T 33868 (see 6.3.1, 6.4.1 and 7.2.1), JJF 1975 (see 6.3.1), JJG 456 (see
6.1.1 and 6.2.4), JJG 458 (see 6.1.1 and 6.2.4) and JJG 879 (see 6.3.1, 6.3.2 and 7.2.1) to adapt to my country's
Technical conditions and improved operability;
--Deleted the normative references ASTM E816, ASTM E824, ASTM G130 and
ASTM G138;
--Changed the range of half-maximum full width (see 3.22, 3.34 and 5.3.2) to be consistent with Table 2;
--The technical requirements for the temperature response of the first-level pyranometer have been changed from "±2" to "±4" (see Table 1) to adapt to the technical requirements of my country.
Technical conditions;
--Changed the technical requirements for temperature response and tilt response of the secondary pyranometer. The temperature response was adjusted from "±4" to "±8", and the tilt
The response was adjusted from "±3" to "±5" (see Table 1) to adapt to my country's technical conditions;
-- The technical requirements for the “spectral sensitivity” of radiometers (see Table 1 of ISO 9370.2017) have been deleted and the
The technical requirements of "sensitivity" have been added (see Table 1) to adapt to my country's technical conditions and improve operability;
--Added calibration traceability agency "National Metrology Institute" (see 5.2.1.2, 5.2.2.2 and 6.2.3) to improve operability;
-- Added the calibration traceability agency "national metrology institution" in 5.2.1.2, 5.2.2.2 and 6.2.3 to improve operability;
-- Changed the transmittance of the narrowband filter in the blocking area for measuring narrowband UVB from "0.001%" to "0.01%" (see
5.3.1) to adapt to my country’s technical conditions;
--Added the organization "China Meteorological Administration" in 6.1.1 to improve operability.
The following editorial changes were made to this document.
--In order to better understand individual terms and definitions, reference diagrams are added (see Note 3.24);
-- Added terminology notes (see 3.14);
-- Changed the wavelength range of broadband pyrheliometer and added explanation (see 4.2.2 Note);
-- Added a note to recommend the test method for the annual stability of the global pyranometer (see footnote a of Table 1);
-- Changed the content of the notes (see footnotes b and c of Table 1, footnotes a and b of Table 1 of ISO 9370.2017);
--Added notes on spectral mismatch information and calibration methods for selective radiometers (see Notes 5.3.5 and 6.3.1);
--Changed the location, time and corresponding irradiance data measured by different UV radiation meters, replacing foreign data with domestic data (see
Table A.1);
--Changed the location, time and corresponding radiation exposure data for measuring annual radiation exposure, and replaced foreign data with domestic data (see
Table A.2);
-- ISO /IEC 17025 is replaced by the informative reference GB/T 27025 (see Note 1 of 6.1.1);
-- ISO 11341 was replaced by the informative reference GB/T 1865-2009 (see references);
-- ISO 11507 is replaced by the informative reference GB/T 23987-2009 (see references);
-- Added informative references to ISO 9059, ISO 9060, ASTM E816, ASTM E824, ASTM G130 and
ASTM G138 (see references).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Plastics Standardization (SAC/TC 15).
This document was drafted by. Biugeda Precision Instruments (Guangzhou) Co., Ltd., Shenzhen Beice Testing Technology Co., Ltd., Guangzhou Synthetic Materials
Research Institute Co., Ltd., Guangdong Jushi Chemical Co., Ltd., Jinan Zhongke Guangyuan Environmental Protection Technology Co., Ltd., Shandong Dawn Polymer Materials
Co., Ltd., Suqian Liansheng Technology Co., Ltd., Suzhou Xince Standard Technology Service Co., Ltd., ATLAS Asia Pacific Materials
Material Testing Technology Co., Ltd.
The main drafters of this document are. Xie Zhengkun, Zhou Yehua, Wang Haojiang, Zhu Hongfang, Zhou Jinglun, Ma Mei, Zhao Lei, Zhang Rui, Xie Xiao, Cheng Ge,
Wang Chongwu, Wang Fei, Chen Xintai, and Liu Fei.
Introduction
When the exposure period of natural weathering, accelerated natural weathering, artificially accelerated weathering, or artificially accelerated radiation exposure is determined only by time,
The effects of changes in the spectral irradiance of the light source and differences in moisture and/or temperature between different exposure tests are often ignored.
The exposure cycle of natural aging determined by the total solar radiation is conducive to the results of exposure tests at different times at the same location.
In addition, monitoring the amount of UV radiation in natural weathering exposure, artificial accelerated weathering or artificial accelerated radiation exposure is the same
This is very important.
There are two common methods for measuring UV radiation. One is to use a physical standard, that is, to expose a reference material at the same time.
The preferred method is to use a radiometer that responds to UV radiation.
The instrumental method and the main characteristics of the instruments used are introduced to provide guidance for users in selecting and using radiometers.
Instrumental determination of radiation dose in plastic weathering test
General principles and basic test methods
1 Scope
This document describes the instrumental method for determining irradiance on a flat surface (hereinafter referred to as the "instrumental method"), including solar radiation in nature,
Concentrated solar radiation and radiation produced by laboratory light sources.
For the measurement of solar radiation in natural weathering and accelerated natural weathering, the instrumental method includes continuous measurement of total solar radiation, solar
The irradiance is obtained by accumulating or integrating the total solar ultraviolet radiation and solar (ultraviolet) spectral radiation and the above instantaneous measured values.
For the measurement of radiation during artificial accelerated weathering or artificial accelerated radiation exposure, instrumental methods involve continuous measurement of all or specified wavelengths.
The ultraviolet radiation, visible spectrum irradiance and/or ultraviolet spectrum irradiance within the range, as well as the instantaneous measurement values mentioned above, are accumulated or integrated to obtain
Get the radiation exposure.
This document does not cover methods using blue wool standards, chemical radiation, polymer or other film dosimeters.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 14890 Calibration method for direct pyrheliometers (GB/T 14890-1994, ISO 9059.1990, NEQ)
GB/T 19565 Pyranometer
GB/T 20236 Test method for accelerated outdoor exposure of non-metallic materials to concentrated light
GB/T 31156 Solar resource measurement - total radiation
GB/T 33698 Solar energy resource measurement Direct radiation
GB/T 33866 Measurement of solar ultraviolet radiation - Broadband ultraviolet radiometer method
GB/T 33868 Calibration method for ultraviolet radiation meters
GB/T 37468 Direct radiation meter
JJF 1975 Specification for calibration of spectroradiometers
JJG 456 Direct pyrheliometer calibration procedure
JJG 458 Verification Procedure for Global Pyranometers
JJG 879 UV radiation meter
ISO 9846 Solar energy - Calibration of a pyranometer us⁃
using a pyrheliometer
ISO 9847 Solar energy-Calibration of field
pyranometers by comparison to a reference pyranometer)
3 Terms and definitions
The following terms and definitions apply to this document.
...
