UL SUBJECT 2257-2005 Outline of Investigation for Identification Tests for Jacket and Insulation Materials used in Plenum Cables (Issue 1)《夹层电缆用护套和绝缘材料鉴别试验调查大纲 发布编号 1》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDecember 13, 20051SUBJECT 2257OUTLINE OF INVESTIGATIONFORIDENTIFICATION TESTS FOR JACKET AND INSULATION MATERIALSUSED IN PLENUM CABLESIssue Number: 1DECEMBER 13, 2005Summary of TopicsThis is the

2、first issue of the Outline of Investigation for Identification Testsfor Jacket and Insulation Materials Used in Plenum Cables. This outlineis issued to document the analytical tests to be employed forcharacterizing commercial and proprietary insulation and jacket materialsused in the construction of

3、 plenum cables.The UL Foreword is no longer located within the UL Outline of Investigation. Forinformation concerning the use and application of the requirements contained inthis Outline of Investigation, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2005 UNDERWRI

4、TERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 13, 2005SUBJECT 22572No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTI

5、ON1 Scope .42 Units of Measurement .43 References .4TEST PROGRAM4 General 4DECEMBER 13, 2005 SUBJECT 2257 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This outline contains the analytical tests used for characterizin

6、g commercial and proprietary jacketand insulation materials used in the construction of plenum cables. The information obtained from initialmaterials testing is intended to ensure the consistency of each plenum-cable material. There are nopredetermined requirements for these tests.2 Units of Measure

7、ment2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3 References3.1 Any undated reference to a code or standard appearing in the requirements of this outline ofinvestigation shall be interpreted as referring to the latest edi

8、tion of the code or standard.TEST PROGRAM4 General4.1 The following are the tests employed in this program and the materials for which they are appropriate.The material to be tested shall be provided as pellets and 4 inx4in(100 mm x 100 mm) plaques.Materials of construction not anticipated by this o

9、utline of investigation may require different tests forcharacterization.4.2 QUALITATIVE INFRARED ANALYSIS (ALL MATERIALS) The infrared (IR) spectrum for eachmaterial is obtained by means of a Fourier-transform infrared (FTIR) spectrometer using a reflectanceaccessory technique or, if necessary, any

10、of the infrared techniques described in the InfraredSpectroscopy sections of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL1581, and the Standard for Polymeric Materials Short Term Property Evaluations, UL 746A.4.3 THERMOGRAVIMETRY (TGA) (ALL MATERIALS) A thermal curve o

11、f each material is obtained bymeans of a thermal analyzer with a thermogravimetric module. The test method is described in theStandard Test Method for Rapid Thermal Degradation of Solid Electrical Insulating Materials byThermogravimetric Method, ASTM D 3850, except that the specimen is to be heated

12、at 20C (36F) perminute in a nitrogen atmosphere. The upper temperature limit is material dependent, with 650C as theminimum. The purge gas is not changed to air for the percent ash determination. This analysis is furtherdescribed in the Thermogravimetry sections of the Reference Standard for Electri

13、cal Wires, Cables, andFlexible Cords, UL 1581, and the Standard for Polymeric Materials Short Term Property Evaluations,UL 746A.4.4 ICP/AA (FEP, ECTFE, PFA, ETFE, PTFE, PVDF, PVDF COPOLYMER MATERIALS ONLY ASNECESSARY) (ALL PVC, OLEFIN, AND OTHER MATERIALS) The elements of interest are to bequantifie

14、d for each material using microwave assisted sample preparation techniques employing aciddigestion or, if appropriate, methods similar to those described for polyvinyl chloride (PVC) compounds inthe Elemental Analysis section of the Reference Standard for Electrical Wires, Cables, and Flexible Cords

15、,UL 1581, (or by other means) using an atomic absorption (AA) spectrophotometer or Inductively CoupledPlasma (ICP) spectrometer instrumentation, or both.DECEMBER 13, 2005SUBJECT 22574UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.5 CHLORINE

16、/BROMINE CONTENT (FEP, ECTFE, PFA, ETFE, PTFE, PVDF, PVDF COPOLYMERMATERIALS ONLY AS NECESSARY) (ALL PVC, OLEFIN, AND OTHER MATERIALS) The halogencontent of interest to be quantified for each material is to be obtained using a combustion flask sampledigestion technique and apparatus essentially simi

17、lar to that described in the Standard Test Method forChlorine, Bromine, or Iodine in Organic Compounds by Oxygen Flask Combustion, ASTM E 442, or otherequivalent means. Quantitation is then carried out by either vacuum UV Inductively Coupled Plasma (ICP)spectrometer instrumentation, ion chromatograp

18、hy (IC) or silver nitrate titration.4.6 DIFFERENTIAL SCANNING CALORIMETRY (DSC) (ALL MATERIALS OTHER THAN PVC) Athermal curve of each material is to be obtained by means a Differential Scanning Calorimeter (DSC). Thetest method is described in the Standard Test Method for Transition Temperatures of

19、Polymers byDifferential Scanning Calorimetry, ASTM D 3418, except that the specimen is to be heated at 20C (36F)per minute in a nitrogen atmosphere without a preliminary thermal cycle. The upper temperature limit istypically 300C, but may be adjusted depending on the material degradation and melt te

20、mperatures. Thisanalysis is further described in the Differential Scanning Calorimetry sections of the Reference Standardfor Electrical Wires, Cables, and Flexible Cords, UL 1581, and the Standard for Polymeric Materials Short Term Property Evaluations, UL 746A.4.7 MELT FLOW (NOT CONDUCTED ON PVC AN

21、D PTFE) (FEP, ECTFE, PFA, ETFE) (OTHERMATERIALS AS NECESSARY) A melt flow rate of each material is to be obtained by means of a meltflow indexer/extrusion plastometer using the method described in the Standard Test Method for Melt FlowRates of Thermoplastics by Extrusion Plastometer, ASTM D 1238.4.8

22、 SPECIFIC GRAVITY (ALL MATERIALS, EXCEPT PVC, PVDF, PVDF COPOLYMER MATERIALSAS NECESSARY) The specific gravity of each material is to be obtained by means of an analyticalbalance using the method described in the Standard Test Methods for Density and Specific Gravity(Relative Density) of Plastics by Displacement, ASTM D 792, or by other, equivalent means.DECEMBER 13, 2005 SUBJECT 2257 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 13, 2005SUBJECT 22576No Text on This Page