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Plastics - Test methods for determination of degradation rate and disintegration degree of plastic materials exposed to marine environmental matrices under laboratory conditions
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Basic data
| Standard ID | GB/T 43289-2023 (GB/T43289-2023) |
| Description (Translated English) | Plastics - Test methods for determination of degradation rate and disintegration degree of plastic materials exposed to marine environmental matrices under laboratory conditions |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G31 |
| Classification of International Standard | 83.080.01 |
| Word Count Estimation | 18,147 |
| Date of Issue | 2023-11-27 |
| Date of Implementation | 2024-06-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 43289-2023: Plastics - Test methods for determination of degradation rate and disintegration degree of plastic materials exposed to marine environmental matrices under laboratory conditions
---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.
ICS 83:080:01
CCSG31
National Standards of People's Republic of China
Determination of marine exposure to plastics under laboratory conditions
Decomposition rates and disintegration of plastic materials in environmental matrices
Level of test methods
(ISO 23832:2021,IDT)
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 2
5 Reagents 3
6 Environmental matrix 3
6:1 Sampling 3
6:2 Preparation of sediment and seawater 3
7 Instruments and Equipment 3
8 Materials 5
8:1 Test materials 5
8:2 Reference materials 5
8:3 Negative control 5
9 Sample preparation and testing 5
9:1 Preparing samples 5
9:2 Status adjustment 5
9:3 Labeling samples 6
9:4 Protective net 6
9:5 Tensile properties 6
9:6 Thickness 6
10 Test setup 6
10:1 Cultivation stage 6
10:2 Number of samplings and repetitions 6
10:3 Starting the test 7
10:4 End of test 8
11 Degradation rate 8
12 Degree of disintegration 9
12:1 General 9
12:2 Surface area analysis 9
12:3 Quality loss 9
13 Validity of results 9
14 Test Report 10
Appendix A (informative) Degradation rate test example 11
Reference 12
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is equivalent to ISO 23832:2021 "Determination of decomposition of plastic materials in matrices exposed to marine environments under plastic laboratory conditions"
Test methods for rate and degree of disintegration:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed and coordinated by the National Standardization Technical Committee for Bio-based Materials and Degradable Products (SAC/TC380):
This document was drafted by: Beijing Technology and Business University, Guangdong Chongxi Environmental Protection Technology Co:, Ltd:, Hefei Hengxin Life Technology Co:, Ltd:,
Yangzhou Huitong Technology Co:, Ltd:, Shanxi Huayang Biodegradable New Materials Co:, Ltd:, Chongqing Lianfa Plastic Technology Co:, Ltd:
Division, Anhui Fengyuan Biotechnology Co:, Ltd:, Anhui Huachi Environmental Protection Technology Co:, Ltd:, Yangzhou Huitong New Materials Co:, Ltd:, Beijing Fengde
Lanzhi Packaging Technology Co:, Ltd:, Sichuan University, Tsinghua University, Ningbo Jialian Technology Co:, Ltd:, Zhejiang Hisun Biomaterials Co:, Ltd:
Company, Huitong Beigong Biotechnology (Beijing) Co:, Ltd:, Shenzhen Wandajie Environmental Protection New Materials Co:, Ltd:, Tongcheng Chemical (China) Co:, Ltd:
Company, Jiangxi Xuanpin New Materials Co:, Ltd:, Jiangnan University, Beijing Yonghua Qingtian Technology Development Co:, Ltd:, Anhui Hengxin Environmental Protection New Materials Co:, Ltd:
Company, Nanjing University of Technology, Light Industry Plastics Processing and Application Research Institute, Shanghai Dajue Packaging Products Co:, Ltd:, Anhui Zhongcheng Huadao Biodegradable Materials
Material Technology Co:, Ltd:, Zhangzhou Green Plastic New Material Co:, Ltd:, China Shenhua Coal-to-Liquid Chemical Co:, Ltd:, Yingkou Zhengda Industrial Co:, Ltd:,
Ningbo Institute of Technology, Shanghai Hema Network Technology Co:, Ltd:
The main drafters of this document: Fu Ye, Hu Jing, Diao Xiaoqian, Wei Jie, Yan Deping, Wang Chunxia, Zhang Fuxiang, Zhang Jiangang, Tong Mingquan, Zhou Jiushou,
Ji Chuanxia, Wang Shu, Wang Chunqiu, Shen Kunliang, Xu Jingmei, Wu Gang, Guo Baohua, Wang Xiong, Liang Wei, Jiang Suchen, Wei Da, Zhao Yanchao, Wang Peng, Ma Piming,
Liu Yunqiao, Zhu Chenjie, Xiong Lulu, Ai Rong, Xu Yanlong, Wen Liang, Yin Tian, Jiang Zhikui, Zheng Weichun, Qiu Dan, Hu Kejie:
Introduction
With the continuous advancement of urbanization in our country, the amount of concentrated garbage generated is increasing day by day, and the pollution caused by plastic waste has become a common problem among people:
The focus of attention everywhere: In this regard, our country is seeking ways to solve the problem of plastic pollution through the use of biodegradable plastic products: Can be born
Products made from biodegradable plastics are designed to be disposed of through organic cycles in composting plants or anaerobic digesters, but cannot be used because these systems
It is not advisable to think that products can be biodegraded (biodegrade) and can be discarded randomly in the environment: These products should also be recycled and recycled:
use: Therefore, test methods for determining the degree and rate of biodegradation of plastics in the natural environment (e:g:, soil or marine environment) are worthy of attention:
in order to better describe the degradation behavior of plastics in specific environments: In fact, some products used in the ocean are made of plastic
(e:g:, fishing gear), these artifacts are sometimes lost or intentionally placed in the marine environment: In products designed for marine applications (e:g:, aquaculture
biodegradable plastic equipment used for fish and mussels, floats) and when assessing the risk of products leaking into the sea, plastic materials need to be assessed
Degradation rate when exposed to marine environments: Provides a method for calculating and reporting laboratory conditions for the decomposition of plastic materials in matrices exposed to marine environments
The method of rate and disintegration degree is also very meaningful for correctly understanding the function and significance of degradable plastics:
This document describes 3 test methods for testing material degradation: Plastic samples can be exposed to 3 different test conditions and different sea
Ocean environment:
---Buried in moist, sandy marine sediments;
---At the interface between seabed sediment and seawater;
---In sea water:
The conditions selected in these test methods are designed to determine the degradation rate of plastic materials and to demonstrate their degradation and disintegration in the natural environment
Propensity:
Material degradation rates in this document include mass loss rates, erosion rates, and mechanical property loss rates: This document can also evaluate collapse
solution, that is, the sample is physically broken into very small fragments (< 2mm):
Determination of marine exposure to plastics under laboratory conditions
Decomposition rates and disintegration of plastic materials in environmental matrices
Level of test methods
1 Scope
This document describes methods for measuring the physical disintegration of plastic samples exposed to marine environmental matrices under laboratory-scale aerobic conditions:
This document is not suitable for the evaluation of degradation caused by heat (thermal degradation) or light (photodegradation):
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
ties-Part 1:Generalprinciples)
Note: GB/T 1040:1-2018 Determination of tensile properties of plastics Part 1: General (ISO 527-1:2012, IDT)
ISO 527-2 Determination of tensile properties of plastics Part 2: Test conditions for molded and extruded plastics (Plastics-Determi-
Note: GB/T 1040:2-2022 Determination of tensile properties of plastics Part 2: Test conditions for molded and extruded plastics (ISO 527-2:2012,
MOD)
ISO 527-3 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets (Plastics-Determination
Note: GB/T 1040:3-2006 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets (ISO 527-3:1995, IDT)
Note: GB/T 6672-2001 Mechanical measurement method for thickness determination of plastic films and sheets (idtISO 4593:1993)
specimens)
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
biodegradationbiodegradation
Degradation caused by biological activity, especially enzymatic action, resulting in significant changes in the chemical structure of a material:
[Source: ISO 472:2013,2:1680]
...
