Standard No.:	YD/T 1181.4-2015
English Name:	Characteristics of non-metal reinforcement for optical fiber cables - Part 4: Glass fber yarns
Chinese Name:	光缆用非金属加强件的特性 第4部分：玻纤纱
Professional Classification:	YD    Professional Standard - Telecommunication
Source Content Issued by:	MIIT
Issued on:	2015-04-30
Implemented on:	2015-10-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	170.0
Delivery:	via email in 1 business day

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).   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