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GB/T 26752-2020: PAN-based carbon fiber
Status: Valid GB/T 26752: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 26752-2020 | English | 339 |
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4 days [Need to translate]
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PAN-based carbon fiber
| Valid |
GB/T 26752-2020
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| GB/T 26752-2011 | English | 719 |
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3 days [Need to translate]
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PAN-based carbon fibre
| Obsolete |
GB/T 26752-2011
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PDF similar to GB/T 26752-2020
Basic data | Standard ID | GB/T 26752-2020 (GB/T26752-2020) | | Description (Translated English) | PAN-based carbon fiber | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q23 | | Classification of International Standard | 83.120 | | Word Count Estimation | 18,116 | | Date of Issue | 2020-03-06 | | Date of Implementation | 2021-02-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 26752-2020: PAN-based carbon fiber---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.
PAN-based carbon fiber
ICS 83.120
Q23
National Standards of People's Republic of China
Replaces GB/T 26752-2011
Polyacrylonitrile-based carbon fiber
2020-03-06 release
2021-02-01 implementation
State Administration of Market Supervision
Published by the National Standardization Administration
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 26752-2011 "polyacrylonitrile-based carbon fiber".
Compared with GB/T 26752-2011, the main technical changes of this standard are as follows.
--- Add 2 reference standards (see Chapter 2);
--- Add terms and definitions (see 3.1, 3.2 and 3.3);
--- Increased solvent classification, process classification and its representation (see 4.1.2 and 4.1.3);
--- Sizing agent delete "generic type", add "for thermosetting polyimide resin" "for thermoplastic polyimide resin"
And "other" (see 4.1.6, 4.1.4 of the.2011 version);
--- Modified the sizing agent content classification and its expression (see 4.1.7, 4.1.5 of the.2011 edition);
--- Some varieties have been added to the classification of mechanical properties (see Table 1);
--- Modified the carbon fiber product mark (see 4.2, 4.2 of the.2011 edition);
--- Revised appearance requirements (see 5.1, 5.1 of the.2011 version);
--- Increased length deviation and test method (see 5.2 and 6.2);
--- Increased the performance index requirements for tow specifications (see Table 2);
--- Removed the upper limit of carbon content (see 5.2 of the.2011 edition);
--- Change the density test method to GB/T 30019 (see 6.3.2, 6.2.2 of the.2011 edition);
--- Change the test method for sizing agent content to GB/T 29761 (see 6.3.3, Appendix B of the.2011 edition);
--- Modify the shelf life (see 8.4.2, 8.4.2 of the.2011 version).
This standard is proposed by China Building Materials Industry Federation.
This standard is under the jurisdiction of the National Fiber Reinforced Plastics Standardization Technical Committee (SAC/TC39).
This standard was drafted. Weihai Development Fiber Co., Ltd., Beijing University of Chemical Technology, China Aviation Industry Corporation Shenyang Aircraft Design and Research Institute
Institute, Zhongfu Shenying Carbon Fiber Co., Ltd., China Chemical Fiber Industry Association, Jilin Carbon Valley Carbon Fiber Co., Ltd., Jiangsu Hengshen
Limited company.
The main drafters of this standard. Cong Zongjie, Chen Dong, Zhang Hongchi, Zou Xiujuan, Gao Aijun, Sui Xiaodong, Lian Feng, Li Deli, Wang Jijun, Qian Hongchuan.
The previous versions of the standards replaced by this standard are.
--- GB/T 26752-2011.
Polyacrylonitrile-based carbon fiber
1 Scope
This standard specifies the terms and definitions, classification and marking of polyacrylonitrile-based carbon fibers, requirements, test methods, inspection rules, packaging, and labeling.
Storage, transportation and storage.
This standard applies to polyacrylonitrile-based carbon fiber filaments, and is not applicable to non-polyacrylonitrile-based carbon fibers such as pitch-based and viscose-based.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 191 Packaging, storage and transportation icon
GB/T 3362 Test method for tensile properties of carbon fiber multifilament
GB/T 18374 terms and definitions of reinforced materials
GB/T 29761 Determination of carbon fiber sizing content
GB/T 30019 carbon fiber density determination
3 terms and definitions
The terms and definitions defined in GB/T 18374 and the following terms apply to this document.
3.1
Twisting fiber
Twisted fibers are twisted along the fiber bundle axis.
3.2
Twistless fiber
The twisted fiber is not twisted in the fiber bundle axial direction.
3.3
Untwisting fiber
Remove twisted fibers.
4 Classification and marking
4.1 Classification
4.1.1 Classification of mechanical properties
According to the mechanical properties, it is divided into four categories. high-strength type, high-strength medium model, high-strength model and high-strength high-level model.The classification consists of two Chinese Pinyin letters and four
Digit composition. Two letters indicate the classification of mechanical properties, four digits indicate the corresponding mechanical performance parameters, and the first two digits indicate the tensile strength
Degrees, the last two digits indicate the tensile modulus of elasticity, as shown in Table 1.
For example, high-strength carbon fibers with a tensile strength of 4500MPa ~ < 5500MPa and a tensile elastic modulus of 220GPa ~ < 260GPa,
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