GB/T 41705-2022 in English
VALIDCarbon fibre-Designation system for filament yarns
- Issued on:2022-10-12
- Implemented on:2022-10-12
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 41705-2022碳纤维 长丝纱的代号》由TC572（全国碳纤维标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of Standardization of Carbon Fiber Filament Yarn Codes
This article will systematically explain the core technical points of GB/T 41705-2028, compare the differences with the ISO13002:1998 international standard, and help users establish a complete code recognition system.
Core parameter coding rules
| Parameter dimension | Coding rules | Measurement standard |
|---|---|---|
| Elastic modulus | Three-digit code (e.g. 233GPa→225) | GB/T26749-2011 Method B |
| Tensile strength | Two-digit code (e.g. 3540MPa→35) | Determination of tensile properties of dipped yarn |
| Linear density | Four-digit code (e.g. 198tex→0200) | ISO1889:1997 |
Typical application scenario case
WithAC polyacrylonitrile carbon fiber as an example:
CF-AC, 225-35-0200, EX-CC
- Outer layer identification: raw yarn type (A) + product form (C)
- Inner layer code: 225 (elastic modulus) -35 (strength) -0200 (linear density)
- Additional field EX-CC: Indicates military-grade heat resistance index
Implementation suggestions and precautions
- Selection process: "Requirement analysis → parameter comparison → specification verification" three-stage standardized process
- Special application scenarios focus on the linear density index error value should be < 5%
Note: The performance of products with the same code may have process parameter differences. The specific supplier's technical documents should be confirmed before implementation
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