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Significance and Use
This test method is intended for use in quality control, material screening, and related problem solving where a compositional analysis, or comparison to a known material, is desired.
The parameters described are guidelines and may be altered to suit the analysis of other rubber compounds.
This test method is not suitable for rubber compounds containing filler materials which decompose in the temperature range of 50 to 800°C, for example, CaCO3, Al(OH)3(3H2O), etc. Analysis of compounds containing fillers of this type requires knowledge of the filler type and some correction for mass loss.
1.1 This test method provides a thermogravimetric (TGA) technique to determine the amounts of organics (oil, polymer), carbon black and ash (filler) in a rubber compound.
1.2 The amount of plasticizer/oil may be determined separately using Test Method D 297
1.3 This test method utilizes previously calibrated, manual or computer assisted TGA instrumentation.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D297 Test Methods for Rubber Products--Chemical Analysis
D1566 Terminology Relating to Rubber
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D6085 Practice for Sampling in Rubber Testing--Terminology and Basic Concepts
E473 Terminology Relating to Thermal Analysis and Rheology
E1953 Practice for Description of Thermal Analysis and Rheology Apparatus
ICS Number Code 83.040.20 (Rubber compounding ingredients); 83.060 (Rubber)
UNSPSC Code 13100000(Rubber and elastomers)