1 Scope
This part specifies the classification, technical requirements and test methods of glass fiber yarns of non-metal reinforcement for optical fiber cables.
This part is applicable to the glass fiber yarns which are used as non-metal reinforcement for optical fiber cables. Glass fiber yarns for other similar uses can also make reference to this part.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 4202-2007 Designation for Glass Fibres
GB/T 7690.1-2001 Reinforcements — Test Method for Yarns — Part 1: Determination of Linear Density (ISO 1889-1997, IDT)
YD/T 1115.2-2001 Waterblocking Materials for Telecommunication Cable and Optical Fiber Cable — Pore 2: Waterblocking Yarn
ASTM D 885-04 ASTM Designation D 885-04 Standard Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-base Fibers
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
tenacity at specified elongation (TASE)
ratio of constant elongation to linear density, in N/tex
3.2
swelling velocity (SV)
ratio of water absorption capacity of water-resistant coated glass fiber yarns to the weight of glass fiber yarns when immersed in water for 1 min, in ml/(g·min).
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3.3
swelling rate (SR)
ratio of water absorption capacity of water-resistant coated glass fiber yarns to the weight of glass fiber yarns when immersed in water for 5 min, in ml/g.
3.4
short-term swelling rate after 10 minutes in 230℃ (SSR)
ratio of water absorption capacity of water-resistant coated glass fiber yarns to the weight of the glass fiber yarns after being treated with constant temperature at 230℃ for 10 min and then immersed in water for 1min, in ml/g
4 Product Classification
4.1 Product classification
Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Product Classification
5 Requirements
6 Test Method
