Middle density polyethylene compounds for optical fiber cable sheathing
1 Scope
This standard specifies the requirements, test methods, inspection rules, marking, labeling, instructions for use, packaging, transportation and storage of middle density polyethylene compounds for optical fiber cable sheathing.
This standard is applicable to middle density polyethylene compounds for telecommunication optical fiber cable sheathing, and may also be used for local telephone cables and other telecommunication cables.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition applies.
GB 191-2000 Packaging - Pictorial marking for handling of goods
GB/T 1033-1986 Test method for density and relative density of plastics
GB/T 1040-1992 Plastics - Determination of tensile properties
GB/T 1408.1-1999 Methods of test for electric strength of solid insulating materials - Tests at power frequencies
GB/T 1409-1988 Methods for the determination of the permittivity and dielectric dissipation factor of solid electrical insulating materials at power, audio and radio frequencies including metre wavelengths
GB/T 1410-1989 Methods of test for volume resistivity and surface resistivity of solid insulating materials
GB/T 2951.8-1997 Common test methods for insulating and sheathing materials of electric cables - Part 4: Methods specific to polyethylene and polypropylene compounds - Section one: Resistance to environmental stress cracking - Wrapping test after thermal ageing in air - Measurement of the melt flow index - Carbon black and/or mineral filler content measurement in PE
GB/T 2951.37-1994 Test method for determining mechanical and physical properties of electric cables and wires - Test for oxidative inductive time
GB/T 3682-2000 Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
GB/T 5470-1985 Plastics - Determination of the brittleness temperature by impact
GB/T 9352-1988 Plastics - Compression moulding test specimens of thermoplastic materials
GB 15065-1994 Black polyethylene compounds for wire and cable
3 Requirements
3.1 Appearance
The product is composed of black round particles, with a linearity of not greater than 2mm × 4mm. The particles shall be uniform, smooth-faced, and free of obvious impurities and connection of three or more particles.
3.2 Physical, mechanical and electrical properties
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Marking, labeling and instructions for use
7 Packaging, transportation and storage
