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GB/T 29284-2024: Poly(lactic acid)
Status: Valid GB/T 29284: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 29284-2024 | English | 359 |
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Poly(lactic acid)
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GB/T 29284-2024
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| GB/T 29284-2012 | English | 399 |
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Poly (lactic acid)
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GB/T 29284-2012
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PDF similar to GB/T 29284-2024
Basic data | Standard ID | GB/T 29284-2024 (GB/T29284-2024) | | Description (Translated English) | Poly(lactic acid) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y28 | | Classification of International Standard | 83.080.01 | | Word Count Estimation | 18,117 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 29284-2012 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29284-2024: Poly(lactic acid)---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
CCSY28
National Standards of People's Republic of China
Replaces GB/T 29284-2012
Polylactic acid
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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:
This document replaces GB/T 29284-2012 "Polylactic acid": Compared with GB/T 29284-2012, except for structural adjustments and editorial changes,
In addition, the main technical changes are as follows:
--- Added "Classification" (see Chapter 4);
--- Changed the performance requirements of PLA resin in Table 1, deleted "ignition residue, n-hexane extract, volatile matter content, intrinsic viscosity
Deviation and weight average molecular weight deviation” inspection items and performance requirements, and added “ash content, lactide content, molecular weight distribution index
"Special grade, extrusion grade, injection molding grade, fiber grade" and corresponding performance requirement indicators have been added:
The inspection item "water content" was changed to "water content", the inspection item "tensile strength" was changed to "tensile breaking stress", and the inspection item "water content" was changed to "water content":
The test item "notched impact strength" was changed to "simple beam notched impact strength", and the test item "biodegradability" was changed to "relative
For "Biodegradability", "Color" is optional (see Chapter 5, Chapter 4 of the:2012 edition);
--- Changed the sample preparation (see 6:1, 5:1 of the:2012 edition);
--- Changed the state adjustment time, changing "should be greater than 4h" to "at least 40h, but not more than 96h" (see 6:2,:2012 edition
5:2);
--- Changed the sensory test method (see 6:3, 5:3 of the:2012 edition);
---Change "water content" to "moisture content", delete method 1, add "Karl Fischer method" as method 1 and arbitration method, and
Method 2 was modified and the formula was supplemented (see 6:4, 5:4 of the:2012 edition);
--- Added "the peak temperature of the melting peak during the first thermal cycle is used as the melting point of the sample" (see 6:7);
--- Added "The midpoint temperature of the temperature range where the glass transition occurs during the second thermal cycle is used as the glass transition temperature of the sample"
Temperature" (see 6:8);
--- Change "tensile strength" to "tensile breaking stress", and change the test method to "prepare A1 type specimen according to 6:1:
GB/T 1040:2, the test speed is 5 mm/min" (see 6:9, 5:9 of the:2012 edition);
--- Change "notched impact strength" to "simply supported beam notched impact strength", and change the test method to "prepared according to the provisions of 6:1
B1 type test specimen, single notch, notch type is A type: Perform lateral impact test according to GB/T 1043:1"
(See 6:10, 5:10 of the:2012 edition);
---Change "biodegradability" to "relative biodegradability", and delete the reference standard "GB/T 19276:1-2003" in the test method:
and “GB/T 19276:2-2003” (see 6:11, 5:11 of the:2012 edition);
--- Deleted the test methods for ignition residue, n-hexane extract, volatile matter, intrinsic viscosity deviation and weight average molecular weight and its deviation
Law (see 5:12~5:16 of the:2012 edition);
--- Added the test method for ash content (see 6:12);
--- Added the test method for lactide content (see 6:13);
--- Added the test method for molecular weight distribution index (see 6:14);
--- Added the test method for chromaticity (see 6:15);
--- Added test result determination methods and reference standards (see 6:16);
--- Change "products produced with the same raw materials, the same formula and the same process are considered as one batch, and the same batch shall not exceed 50t" to "polyethylene ester"
Acid resin is a product of the same brand produced on the same production line, with the same raw materials and the same process: The manufacturer can also batch it according to the same
The products are grouped into batches according to the production cycle or storage silo: The products are inspected and accepted in batches (see
7:1, 6:1 of the:2012 edition);
--- "Melting point" has been added to the factory inspection items (see 7:3);
--- Deleted "e) when the national quality and technical supervision department requires" (see 6:4 of the:2012 edition);
--- Changed the marking related content (see 8:1, 7:1 of the:2012 edition);
--- Changed the packaging related content (see 8:2, 7:2 of the:2012 edition):
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 and coordinated by the National Technical Committee for Standardization of Bio-based Materials and Degradable Products (SAC/TC380):
This document was drafted by: Zhejiang Hisun Biomaterials Co:, Ltd:, Anhui Fengyuan Biotechnology Co:, Ltd:, Pulisi Biotechnology Co:, Ltd:
Technology Co:, Ltd:, Zhuhai Jinfa Biomaterials Co:, Ltd:, Henan Jindan Lactic Acid Technology Co:, Ltd:, Yangzhou Huitong Technology Co:, Ltd:
Company, Henan Longdu Tianren Biomaterials Co:, Ltd:, Shenzhen Guanghua Weiye Co:, Ltd:, Ma'anshan Tongjieliang Biomaterials Co:, Ltd:,
Beijing Technology and Business University, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Sichuan University, Tongji University, Yunnan University for Nationalities, Shandong Shenghe Thin Film New Materials Co:, Ltd:
Materials Co:, Ltd:, Ningbo Jialian Technology Co:, Ltd:, Hefei Hengxin Life Technology Co:, Ltd:, Huizhou Juner Plastic Technology Co:, Ltd:
Company, Yangzhou Huitong Bio-New Materials Co:, Ltd:, Huitong Beigong Biotechnology (Beijing) Co:, Ltd:, Guangdong Chongxi Environmental Protection Technology Co:, Ltd:,
Anhui Huachi Environmental Protection Technology Co:, Ltd:, Anhui Hengxin Environmental Protection New Materials Co:, Ltd:, Fuling Technology Co:, Ltd:, Jiangxi Xuanpin New Materials
Co:, Ltd:, Shenzhen Wandajie Environmental Protection New Materials Co:, Ltd:, Light Industry Plastic Processing Application Research Institute, Bengbu Product Quality Supervision and Inspection
Testing Institute, Shenzhen Zhengwang Environmental Protection New Materials Co:, Ltd:
The main drafters of this document are: Chen Zhiming, Liang Wei, Fu Song, Ji Chuanxia, Li Rongqun, Yu Lihua, Huang Jian, Shi Congliang, Zhao Nan, Zhang Jiangang, Ruan Liuwen,
Li Huiwen, Yang Yihu, Zhang Naiwen, Hu Jing, Zhang Qian, Diao Xiaoqian, Chen Xuesi, Bian Xinchao, Tian Guoqiang, Wang Yuzhong, Ren Jie, Wang Qinfeng, Yuan Minglong,
Li Bin, He Haifeng, Guo Zengsheng, Wei Wei, Zhu Ronghua, Wang Liangbo, Wang Xiong, Yan Deping, Zhao Yingjie, Jiang Suchen, Zhang Yuesheng, Wei Jie, Wang Chunqiu, Ye Xinjian,
Hu Xinfu, Wang Peng, Wei Da, Sun Ying, Guo Qing, Zhang Jianhong:
The previous versions of this document and the documents it replaces are as follows:
---First published in:2012 as GB/T 29284-2012;
---This is the first revision:
Polylactic acid
1 Scope
This document defines the terms and definitions of polylactic acid resins, specifies the classification, requirements, inspection rules, marking, packaging, transportation and storage, and describes
The corresponding test methods are described:
This document is applicable to polylactic acid (hereinafter referred to as PLA) resin obtained by polymerization using lactic acid or lactide as raw materials:
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 1033:1 Plastics - Determination of density of non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method
GB/T 1040:2 Determination of tensile properties of plastics Part 2: Test conditions for moulding and extruded plastics
GB/T 1043:1 Determination of impact properties of simply supported plastic beams Part 1: Non-instrumented impact test
GB/T 2547 Plastics Sampling Method
GB/T 2918 Standard environment for conditioning and testing of plastic specimens
GB/T 3682:1 Plastics Thermoplastics - Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR)
Part 1: Standard methods
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 9345:1 Determination of ash content in plastics Part 1: General method
GB/T 14190-2017 Test method for fiber-grade polyester (PET) chips
GB/T 17037:1 Plastics - Preparation of injection moulded test specimens for thermoplastic materials - Part 1: General principles and multi-purpose test specimens and long
Preparation of strip specimens
GB/T 19277:1 Determination of the ultimate aerobic biodegradability of materials under controlled composting conditions by measuring the carbon dioxide released
Methods Part 1: General methods
GB/T 19466:2 Plastics Differential Scanning Calorimetry (DSC) Part 2: Determination of Glass Transition Temperature
GB/T 19466:3 Plastics Differential Scanning Calorimetry (DSC) Part 3: Determination of Melting and Crystallization Temperature and Enthalpy
GB/T 37191 Determination of moisture content of raw rubber - Karl Fischer method
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Polylactide
A polymer obtained by chemical synthesis using lactic acid or lactide, a dimer of lactic acid, as a monomer and having the chemical structure shown in Figure 1:
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