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GB/T 2951.42-2008 English PDF

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GB/T 2951.42-2008: Common test methods for insulating and sheathing materials of electric and optical cables -- Part 42: Methods specific to polyethylene and polypropylene compounds -- Tensile strength and elongation at break after conditioning at elevated temperature
Status: Valid

GB/T 2951.42: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 2951.42-2008English274 Add to Cart 3 days [Need to translate] Common test methods for insulating and sheathing materials of electric and optical cables -- Part 42: Methods specific to polyethylene and polypropylene compounds -- Tensile strength and elongation at break after conditioning at elevated temperature Valid GB/T 2951.42-2008
GB/T 2951.42-1994English199 Add to Cart 2 days [Need to translate] Test method for determining mechanical and physical properties of electric cables and wires. Wrapping test after thermal ageing in air Obsolete GB/T 2951.42-1994

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Basic data

Standard ID GB/T 2951.42-2008 (GB/T2951.42-2008)
Description (Translated English) Common test methods for insulating and sheathing materials of electric and optical cables -- Part 42: Methods specific to polyethylene and polypropylene compounds -- Tensile strength and elongation at break after conditioning at elevated temperature
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K13
Classification of International Standard 29.060
Word Count Estimation 14,121
Date of Issue 2008-06-26
Date of Implementation 2009-04-01
Older Standard (superseded by this standard) GB/T 2951.9-1997
Quoted Standard GB/T 2951.11-2008; GB/T 2951.13-2008; ISO 188
Adopted Standard IEC 60811-4-2-2004, IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the distribution and communication cables and fiber optic cable, including marine and offshore cables and fiber optic cable with polymer insulation and sheathing materials test methods. These test methods applicable to polyolefin insulation and sheathing.

GB/T 2951.42-2008: Common test methods for insulating and sheathing materials of electric and optical cables -- Part 42: Methods specific to polyethylene and polypropylene compounds -- Tensile strength and elongation at break after conditioning at elevated temperature



---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Common test methods for insulating and sheathing materials of electric and optical cables Part 42.. Methods specific to polyethylene and polypropylene compounds Tensile strength and elongation at break after conditioning at elevated temperature Wrappi ICS 29.060 K13 National Standards of People's Republic of China GB/T 2951.42-2008/IEC 60811-4-2.2004 Replacing GB/T 2951.9-1997 Common test methods for cables and cable insulation and sheathing materials Part 42. polyethylene and polypropylene compounds test Methods --- After heat treatment the tensile strength and elongation at break High temperature treatment test --- test --- winding old hot air After winding test of the determination of the added mass --- --- Long-term thermal stability test --- copper-catalyzed oxidative degradation experiment method (IEC 60811-4-2.2004, IDT) Posted 2009-04-01 2008-06-26 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 2951 "cable and the cable Common test methods for insulating and sheathing materials" is divided into 10 parts. --- Part 11. General test methods for measuring the thickness and overall dimensions --- --- mechanical tests; --- Part 12. Common test methods --- Thermal aging methods; --- Part 13. General test method for determining the density method --- --- --- Water absorption tests - Shrinkage test; --- Part 14. Common test methods --- low temperature test; --- Part 21. elastomeric compounds specific test method Ozone resistance --- --- --- Hot set test - Mineral oil immersion test; --- Part 31. Methods specific to PVC compounds - Pressure test --- --- high temperature resistance to cracking; --- Part 32. Methods specific to PVC compounds - Loss of mass test --- --- thermal stability test; --- Part 41. polyethylene and polypropylene compounds - Test methods --- --- ESCR test melt index measurement Measurement Method --- direct combustion of polyethylene in carbon black and/or mineral filler content --- thermal gravimetric analysis (TGA) measurements of carbon Black --- microscopy to assess the content of carbon black dispersion in polyethylene; The main drafters of this section. Li Mingzhu, Wang Shen, Immunity From Chunhong, Huang Xuan. This part of the standard replaces the previous editions are. --- GB/T 2951.9-1997; --- GB 2951.42-1994. GB/T 2951.42-2008/IEC 60811-4-2.2004 Common test methods for cables and cable insulation and sheathing materials Part 42. polyethylene and polypropylene compounds test Methods --- After heat treatment the tensile strength and elongation at break High temperature treatment test --- test --- winding old hot air After winding test of the determination of the added mass --- --- Long-term thermal stability test --- copper-catalyzed oxidative degradation experiment method

1 Overview

1.1 Scope This section GB/T 2951 specifies the distribution and communication cables and fiber optic cable, including marine and offshore cables and optical fiber polymer must Edge sheathing materials and test methods. The test method is applicable to polyolefin insulation and sheathing. 1.2 Normative references The following documents contain provisions which, through reference to GB/T 2951 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 2951.11-2008 cable and the cable Common test methods for insulating and sheathing materials - Part 11. General test side Law --- --- Measurement of thickness and overall dimensions of mechanical tests (IEC 60811-1-1.1993, IDT) GB/T 2951.13-2008 cable and the cable Common test methods for insulating and sheathing materials - Part 13. General test side Density determination method --- --- --- Water absorption tests - Shrinkage test (IEC 60811-1-3.1993, IDT) ISO 188, vulcanized or thermoplastic rubber --- Accelerated aging and heat resistance test

2 Terms and definitions

For ease of testing, we should distinguish between low-density, medium density and high density polyethylene (23 ℃). 23 ℃ Density Polyethylene Type a/(g/cm3) LDPE ≤0.925 Medium density polyethylene > 0.925, ≤0.940 High density polyethylene > 0.940 a density means these unfilled resin. Determination according to GB/T 2951.13-2008 provisions of Chapter 8.

3 Test principle

This section does not provide all of the test conditions (such as temperature, duration, etc.) as well as all of the test requirements, they should be on cable Product standards to be defined. Any test requirements specified in this standard can be modified in the relevant product standard cable in order to meet the needs of a particular type of cable.

4 Scope

Test conditions and test parameters specified in this section apply to the most commonly used types of cables, optical cables, wires and cords insulation and sheathing GB/T 2951.42-2008/IEC 60811-4-2.2004

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