GB/T 43014-2023 in English
VALIDPolyimide short cut fibre
- Issued on:2023-09-07
- Implemented on:2024-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$233.00
《GB/T 43014-2023聚酰亚胺超短纤维》由TC586（全国化学纤维标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Interpretation of the national standard GB/T 43014-2023 for polyimide short fibers
Analysis of the background of standard formulation and technological evolution
As a high-performance synthetic fiber, polyimide short fibers are widely used in aerospace, electronic insulation, high-temperature filtration and other fields due to their excellent thermal stability and mechanical properties. With the advancement of technology and the growth of market demand, it is necessary to formulate unified technical standards to regulate product quality and testing methods.
Comparison of standard frameworks
| Standard dimensions | GB/T 43014—2023 | International standard reference | Industry status |
|---|---|---|---|
| Product definition | Clear the definition and scope of application of polyimide ultra-short fibers | In line with ISO standards, the definition is highly consistent | Fill in domestic gaps and promote industrial upgrading |
| Technical requirements | Includes core indicators such as linear density, diameter, and breaking strength | Some parameters are similar to ANSI standards | Improve product quality competitiveness |
| Testing methods | Detailed provisions of the test methods for various properties | Consistent with some clauses of ASTM standards | Improve testing efficiency and accuracy |
Interpretation of core technical requirements
Linear density deviation rate:±8.0% for superior products, ±10.0% for qualified products. This indicator reflects the uniformity of the fiber, and the lower the deviation rate, the higher the product quality.
Diameter deviation rate:It is also divided into superior products and qualified products, which is consistent with the linear density deviation rate requirements. In actual applications, the diameter deviation rate is calculated after microscopic measurement (as shown in Appendix B).
Breaking strength:≥0.85Xα for superior products, and the specific value is determined by negotiation between the supply and demand parties. The breaking strength test method refers to GB/T 14337, and the pre-tension per unit linear density is (0.15±0.02) cN/dtex.
Implementation suggestions
Case analysis: How to improve the control accuracy of fiber length
For fibers with a small nominal length (≤4mm), it is recommended to use a projector-assisted measurement method (as shown in Appendix C). By selecting the magnification and accurately measuring, human errors can be effectively reduced and the detection accuracy of the length deviation rate can be improved.
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