1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFEBRUARY 12, 20151UL 2885Outline of Investigation for Acid Gas, Acidity and Conductivity ofCombusted Materials and Assessment of HalogensIssue Number: 2February 12, 2015Summary of TopicsThis is t
2、he second issue of the Outline of Investigation for Acid Gas,Acidity and Conductivity of Combusted Materials and Assessmentof Halogens, based on the following standards:a) IEC 60754-1, Test on gases evolved during combustion ofmaterials from cables Part 1: Determination of the halogen acidgas conten
3、t.b) The recommended performance requirements in InformativeAnnex A of IEC 60754-2, Test on gases evolved during combustionof materials from cables Part 2: Determination of acidity (by pHmeasurement) and conductivity.c) IEC 62821-1, Halogen free low smoke thermoplastic insulatedand sheathed cables o
4、f rated voltages up to and including 450/750V Part 1: general requirements, Annex B (normative),Assessment of halogens, Requirements for extruded material,Sample test.d) IEC 62821-2, Electric cables Halogen-free, low smoke,thermoplastic insulated and sheathed cables of rated voltages upto and includ
5、ing 450/750 V - Part 2: Test methods, Chemical test:Determination of halogens Elemental test.e) IEC 60684-2 Flexible insulating sleeving Part 2: Methods oftest, Determination of low levels of fluorine) Methods A (Ionselective electrode method fluoride) or B (Alizarin fluorine bluemethod.This outline
6、 is issued to document the assessment of individual materialstested to the aforementioned IEC test method standards.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULULs Outlines of Investigation are copyrighted by UL. Neither a printed norelect
7、ronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC.UL COPYRIGHT
8、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Glossary .53 Units of Measurement .54 Undated References 5SAMPLES5 Specimens for Test .55.1 General .55.2 Materials evaluated to IEC 60754-1 .65.3 Materials evaluated to IEC 6
9、0754-2 .65.4 Materials evaluated to IEC 62821-1 Annex B (normative), Assessment of halogens,Requirements for extruded material, sample test .6PERFORMANCE TESTS6 Test Apparatus a) IEC 60754-1, Test on gases evolved during combustion of materials from cables Part 1:Determination of the halogen acid ga
10、s content andb) IEC 60754-2, Test on gases evolved during combustion of materials from cables Part 2:Determination of acidity (by pH measurement) and conductivity. Cable weighted pH andconductivity values are not to be used for the evaluation of test results in this outline.c) IEC 62821-1, Halogen f
11、ree low smoke thermoplastic insulated and sheathed cables of ratedvoltages up to and including 450/750 V Part 1: general requirements, Annex B (normative),Assessment of halogens, Requirements for extruded material, Sample test.1.3 The requirements may be applied to other material types if found to b
12、e appropriate.1.4 The final acceptance of materials certified to IEC 60754-1, IEC 60754-2 or IEC 62821-1 is dependentupon its use in or as a complete product that complies with the requirements in the standard applicableto such a product.1.5 Materials certified to IEC 60754-1 and IEC 60754-2 are not
13、 considered as non-halogen,non-halogenated, zero halogen, halogen-free, low halogen, low smoke zero halogen (LSZH) or any otherrelated terminology.1.6 Materials certified to the sample test requirements for extruded material in Annex B (normative),Assessment of halogens, Requirements for extruded ma
14、terial, Sample test in IEC 62821-1 are consideredhalogen-free or HF.1.7 This Outline does not investigate other properties of materials including flammability, toxicity orenvironmental risks.FEBRUARY 12, 2015UL 28854UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHO
15、UT PERMISSION FROM UL2 Glossary2.1 For the purpose of this standard, the following definitions apply.2.2 COEFFICIENT OF VARIATION (Standard Deviation / Mean) x 100.2.3 HOMOGENEOUS Uniform in composition.2.4 MATERIAL A compound, part or substance that is discretely homogeneous throughout itsentirety
16、(e.g. a polyethylene compound) or discretely used as a uniform composite or layered material(e.g. co-extruded insulation) whose compositional entities cannot be readily separated by mechanicalmeans. These compounds, parts or substances are constructed such that: Homogeneous material pieces can be cu
17、t from any portion in any fashion such that they arerepresentative of the whole and compositionally equal to pieces similarly cut from any otherportion of the part / substance. Uniform composite or layered material pieces can be cut from any portion in a specific fashion(e.g. cross section) such tha
18、t they are representative of the whole and compositionally equal topieces similarly cut from any other portion of the part / substance.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.4 Undated References
19、4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.SAMPLES5 Specimens for Test5.1 General5.1.1 Specimens representative of the material under evaluation are to be employed in t
20、hese tests.5.1.2 Special consideration is to be given for evaluation of multiple sample types for a given designationbecause of compositional differences due to variation in color, finish, construction and printing. Coloredspecimens shall be chosen according to the following:a) Natural and the most
21、heavily pigmented light and dark colors.b) The heaviest organic pigment loading (unless the most heavily pigmented light and darkcolors include the highest organic pigment level.)When certain color pigments are known to affect combustion product acidity characteristics, or containhalogen elements th
22、ey are also to be provided.FEBRUARY 12, 2015 UL 2885 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.1.3 Composite or layered (co-extruded) materials shall be evaluated such that if layer mass ratios varydisproportionally with thickness or
23、composition varies otherwise, the extreme mass ratios or compositionvariations are to be evaluated in the investigation.5.2 Materials evaluated to IEC 60754-15.2.1 A minimum of 20 grams of each material under evaluation is needed for use in this test program.5.3 Materials evaluated to IEC 60754-25.3
24、.1 A minimum of 60 grams of each material under evaluation is needed for use in this test program.5.4 Materials evaluated to IEC 62821-1 Annex B (normative), Assessment of halogens,Requirements for extruded material, sample test5.4.1 A minimum of 100 grams of each material under evaluation is needed
25、 for use in this test program.PERFORMANCE TESTS6 Test Apparatus If the results for chlorine and bromine content expressed as HCl is 0.5%, the material isdetermined to contain halogen and no further testing is required.7.3.4 Stage 3; If the results for fluorine content is 0.1%, the material is determ
26、ined to contain halogenand no further testing is required. If the fluorine content is 0.1%, then the material is determined to behalogen free and no further testing is required.This is generated text for figtxt.FEBRUARY 12, 2015UL 28858UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
27、ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigure 7.1IEC 62821-1 Annex B Evaluation process flow diagramFEBRUARY 12, 2015 UL 2885 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8 Report8.1 Materials evaluated to IEC 60754-18.1.1 The test repor
28、t shall include the following information:a) Description of the material tested;b) Mean halogen acid gas content of the material to the nearest 0.1 mg HCl/goftestspecimen;1, 2c) Suppliers name and lot # for the 0.1 M silver nitrate and 0.1 M ammonium thiocyanatesolutions;d) Test apparatus used (meth
29、od 1, method 2 or method 3);e) Assigned Performance Level Category (PLC) based on the mean halogen acid gas contentresult in mg HCl equivalent / gram of material according to the table below. An Assigned PLCindicates that a samples mean halogen acid gas content test result falls within the rangeiden
30、tified.1Rounding shall be conducted according to ASTM E29.2Values of halogen acid evolved less than 5 mg/g of the sample taken shall not be reported.Table 8.1Halogen acid gas content performance level categories (PLC)Mean halogen acid gas contentAssigned PLCmg HCl Equivalent / g Mass % HCl Equivalen
31、ta 5.0 0.50 15.1 49.9 0.51 4.99 250.0 99.9 5.00 9.99 3100.0 149.9 10.00 14.99 4150.0 199.9 15.00 19.99 5200.0 249.9 20.00 24.99 6250.0 299.9 25.00 29.99 7300.0 349.9 30.00 34.99 8350.0 399.9 35.00 39.99 9 400.0 40.00 10aMean halogen acid gas content presented as Mass % HCl Equivalent for information
32、 purposes only.FEBRUARY 12, 2015UL 288510UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8.2 Materials evaluated to IEC 60754-28.2.1 The test report shall include the following information:a) Description of the material tested;b) Mean pH and c
33、onductivity values ( 25C (77F);c) Indication that the General method was used for the determination.8.3 Materials evaluated to IEC 62821-1Annex B8.3.1 The test report shall include the following information:Stage 0: Indication of the presence (e.g. positive) or absence (e.g. negative) test result fo
34、rfluorine, chlorine and bromine.Stage 1: As per 8.2 above (if halogens are found present in Stage 0).Stage 2: As per 8.1 above (if the Stage 1 pH results are 4.3 and the conductivity is 2.5S/mm and 10 S/mm).Stage 3: Indication of the method performed (A or B) and the fluorine content in % mass of th
35、esample (if the Stage 2 results are 0.5 %).CHARACTERIZATION TESTS9 General9.1 Analytical tests are to be conducted to establish a characterization for general descriptive purposesand to provide a comparative baseline for revealing compositional changes in production lots of thematerial. The tests de
36、scribed in 10.1 10.10 may be performed. Other characterization tests maysupplement or replace those described below.10 Test Procedures10.1 QUALITATIVE INFRARED ANALYSIS (QIA) The infrared (IR) spectrum for each material isobtained by means of a Fourier-transform infrared (FTIR) spectrometer as descr
37、ibed in the InfraredSpectroscopy sections of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL1581, or the Standard for Polymeric Materials - Short Term Property Evaluations, UL 746A.10.2 THERMOGRAVIMETRY (TGA) A thermal curve of each material is obtained by means of atherm
38、al analyzer with a thermogravimetric module. The test method is described in the Standard TestMethod for Rapid Thermal Degradation of Solid Electrical Insulating Materials by ThermogravimetricMethod, ASTM D 3850, except that the specimen is to be heated at 20C (36F) per minute in a nitrogenatmospher
39、e. The upper temperature limit is material dependent, with 650C as the minimum. The purgegas is not changed to air for the percent ash determination. This analysis is further described in theThermogravimetry sections of the Reference Standard for Electrical Wires, Cables, and Flexible Cords,UL 1581,
40、 or the Standard for Polymeric Materials - Short Term Property Evaluations, UL 746A.FEBRUARY 12, 2015 UL 2885 11UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL10.3 ELEMENTAL ANALYSIS (EA) The elements of interest are to be quantified for each
41、 material usingmicrowave assisted sample preparation techniques employing acid digestion or, if appropriate, methodssimilar to those described for polyvinyl chloride (PVC) compounds in the Elemental Analysis section of theReference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581,
42、(or by other means) usingan atomic absorption (AA) spectrophotometer or Inductively Coupled Plasma (ICP) spectrometerinstrumentation, or both.10.4 DIFFERENTIAL SCANNING CALORIMETRY (DSC) A thermal curve is to be obtained by meansa Differential Scanning Calorimeter (DSC). The test method is described
43、 in the Standard Test Method forTransition Temperatures of Polymers by Differential Scanning Calorimetry, ASTM D 3418, except that thespecimen is to be heated at 20C (36F) per minute in a nitrogen atmosphere without a preliminarythermal cycle. The upper temperature limit is typically 300C, but may b
44、e adjusted depending on thematerial degradation and melt temperatures. This analysis is further described in the Differential ScanningCalorimetry sections of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581,and the Standard for Polymeric Materials - Short Term Propert
45、y Evaluations, UL 746A.10.5 ASH CONTENT The ash content is to be determined using the direct-calcination procedure(Method A) described in ISO 3451-89, Part 5, covering methods for the ash-content analysis of polyvinylchloride (PVC) materials. This analysis is further described in the Determination o
46、f Ash Content section ofthe Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581.10.6 GEL PERMEATION CHROMATOGRAPHY (GPC) Gel Permeation Chromatography (GPC) is tobe performed for PVC materials using liquid chromatography that employs a porous gel as a separationmedium. This
47、method is designed to analyze the organic-soluble non-resin PVC compound components(for example, plasticizers) that appear within the working range of the column bank. This analysis is furtherdescribed in the Gel Permeation Chromatography section of the Reference Standard for Electrical Wires,Cables
48、, and Flexible Cords, UL 1581.10.7 HALOGEN CONTENT Combustion ion chromatography (C-IC), X-ray fluorescence spectrometry(XRF) or Beilstein testing may optionally be performed to confirm presence or absence of halogenelements.10.8 CHLORINE/BROMINE CONTENT The halogen content of interest to be quantif
49、ied for eachmaterial is to be obtained using a combustion flask sample digestion technique and apparatus essentiallysimilar to that described in the Standard Test Method for Chlorine, Bromine, or Iodine in OrganicCompounds by Oxygen Flask Combustion, ASTM E 442, or other equivalent means. Quantitation is thencarried out by either vacuum UV Inductively Coupled Plasma (ICP) spectrometer instrumentation, ionchromatography (IC) or silver nitrate titration.10.9 MELT FLOW melt flo
