Secondary coating materials used for optical fiber - Part 1: Polybutylene terephtalate
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of polybutylene terephtalate (PBT), a secondary coating material for optical fiber.
This standard specifies the technical requirements and test methods of PBT loose tubes for optical fiber.
This standard is applicable to the manufacture, use and acceptance of PBT, a secondary coating material for loose tubes for optical fiber.
2 Normative references
The following standards contain provision which, through reference in this standard, constitute provisions of this standard. At the time of publication, all editions cited are valid. All standards are subject to revision, and all parties using this standard are encouraged to investigate the possibility of applying the latest editions of the following standards.
GB 1033-86 Test method for density and relative density of plastics
GB 1034-1998 Plastics - Determination of water absorption
GB 1036-89 Determination for coefficient of linear expansion of plastics
GB 1040-92 Plastics - Determination of tensile properties
GB 1410-88 Methods of test for insulation resistance, volume resistivity and surface resistivity of solid electrical insulating materials
GB 1634-79 Test method of heat deflection temperature under bending load for plastics
GB 1843-80 Plastics - Determination of izod impact strength
GB 2828-87 Sampling procedures and tables for lot-by-lot inspection by attributes (Apply to inspection of successive lots or batches)
GB 2829-87 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of stability for productive process)
GB 2918-82 Plastics - Standard atmospheres for conditioning and testing
GB/T 2951.1-1997 Common test methods for insulating and sheathing materials of electric cables - Part 1: Methods for general application - Section one: Measurement of thickness and overall dimensions - Tests for determining the mechanical properties
GB/T 2951.37-94 Test method for determining mechanical and physical properties of electric cables and wires - Test for oxidative inductive time
GB 3398-82 Test for hardness of plastics by the ball indentation
GB 3682-83 Test method for melt flow rate of thermoplastics
GB 9341-88 Plastics - Determination of flexural properties
HG2-1122-77 Injection moulding of test specimens of thermoplastic materials
YD/T 839.1-2000 Filling compounds and flooding compounds for telecommunication cable and optical fibre cable - Part 1: Test method
IEC 60794-1-2-1999 Optical fibre cables - Part 1-2: Generic specification -
Basic optical cable test procedures
3 Requirements
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Marking, packaging, transportation and storage
Annex A (Normative) Preparation of standard specimens of secondary coating materials
Annex B (Normative) Test method for moisture content of secondary covering materials
Annex C (Normative) Compatibility of secondary coating materials and filling ointment
Annex D (Normative) Preparation of tubular specimens of secondary coating materials
Annex E (Normative) Sampling method for tubular specimens of secondary covering materials
Annex F (Normative) Test method for mechanical properties of loose tubes
Annex G (Normative) Test method for longitudinal post-shrinkage of loose tubes
Annex H (Normative) Test method for stability of loose tubes against thermal hydrolysis
Annex J (Normative) Test method for resistance to thermal aging of loose tubes
Annex K (Normative) Test method for resistance to lateral pressure of loose tubes
Annex L (Normative) Test method for bending resistance of loose tubes
Annex M (Normative) Test method for compatibility of loose tubes with filling compounds
