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iso-11357-2-plastics-dsc-determination-of-glass-transition-temperature
Thermal Analysis ASTM D3418 Melting and Crystallization Temperature Measurement by DSCASTM D3418 Thermal Analysis of Polymers by DSCASTM D3895 Thermal Stability of Polymers by TGAASTM E1269 DSC Heat Flow Rate DeterminationASTM E1356 Differential Scanning Calorimetry (DSC) for PolymersASTM E1356 Differential Scanning Calorimetry of PharmaceuticalsASTM E1356 DSC of AdhesivesASTM E1356-08 DSC Glass Transition and Melting Point DeterminationASTM E1460 DSC of Composite MaterialsASTM E1461 Laser Flash Method for Thermal DiffusivityASTM E1462 Simultaneous Thermal Analysis of Polymer BlendsASTM E1545 DSC of FoodstuffsASTM E1582 Thermal Analysis of CoatingsASTM E1590 DMA Frequency Sweep TestASTM E1821 Temperature-Dependent Mechanical AnalysisASTM E1952 TGA of High-Temperature StabilityASTM E1959 TGA Analysis of Polymers Under Oxygen AtmosphereASTM E2001 Modulated DSC for Polymer CharacterizationASTM E2004 TGA of Composite MaterialsASTM E2041 Thermal Analysis of Battery MaterialsASTM E2072 TMA of MetalsASTM E2179 DMA Temperature Sweep TestASTM E2232 TMA for Coefficient of Thermal Expansion in MetalsASTM E2280 DSC for Thin Film MaterialsASTM E2297 Thermal Conductivity Measurement by TGAASTM E2429 Thermal Analysis of GlassASTM E2439 Thermogravimetric Analysis of Food ProductsASTM E2546 Measurement of Thermal Expansion by TMAASTM E2548 Simultaneous TGA and DSC AnalysisASTM E2549 Simultaneous TGA-FTIR for Decomposition Gas AnalysisASTM E2580 DMA of ElastomersASTM E2608 Thermal Analysis of Ceramic MaterialsASTM E2677 Thermal Analysis of Pharmaceutical PowdersASTM E2716 Dynamic Mechanical Analysis (DMA) of PolymersASTM E2719 DMA Creep and Recovery TestingASTM E2781 Temperature Modulated DSC for Complex Thermal EventsASTM E2782 Thermomechanical Analysis (TMA) of MaterialsASTM E2783 High-Temperature Thermal AnalysisASTM E344 Heat Capacity Measurements by DSCASTM E537 Thermomechanical Analysis for Dimensional ChangesASTM E968 Thermogravimetric Analysis (TGA) of MaterialsISO 11357-1 Adhesive Thermal PropertiesISO 11357-1 Composite Thermal AnalysisISO 11357-1 Food Thermal PropertiesISO 11357-1 Pharmaceutical Thermal AnalysisISO 11357-1 Pharmaceutical Thermal PropertiesISO 11357-1 Plastics — DSC General PrinciplesISO 11357-1 Plastics — DSC General Testing ProceduresISO 11357-1 Thin Film Thermal CharacterizationISO 11357-3 Plastics — DSC Crystallization ParametersISO 11357-3 Plastics — DSC Determination of Crystallization TemperatureISO 11357-3 Polymer Thermal PropertiesISO 11357-4 Plastics — DSC Determination of Heat CapacityISO 11357-4 Plastics — Heat Capacity MeasurementISO 11357-5 Plastics — DSC Determination of Oxidation Induction TimeISO 11357-6 Plastics — DSC Crystallinity MeasurementsISO 11358-1 Composite Thermal DecompositionISO 11358-1 Food Thermal Decomposition AnalysisISO 11358-1 Plastics — TGA General PrinciplesISO 11358-1 Thermal Stability TestingISO 11358-2 Plastics — TGA Decomposition ProfilesISO 11358-2 Polymer Thermal DegradationISO 11358-3 Plastics — TGA Thermal StabilityISO 11358-4 Plastics — TGA with Gas AnalysisISO 11359-2 Metal Thermal ExpansionISO 11359-2 Metals — TMA Expansion TestingISO 11359-2 Plastics — TMA Determination of Coefficient of Thermal ExpansionISO 11359-3 Plastics — TMA Linear Thermal ExpansionISO 11359-3 Thermal Expansion TestingISO 15911 Coating Thermal BehaviorISO 18246 Battery Material Thermal TestingISO 18927-1 Ceramic Thermal TestingISO 22007-2 Plastics — Thermal Conductivity TestingISO 22007-4 Plastics — Thermal DiffusivityISO 6721-1 Elastomer Dynamic Mechanical TestingISO 6721-1 Plastics — DMA General PrinciplesISO 6721-10 Plastics — DMA Frequency SweepISO 6721-11 Plastics — DMA Creep and Stress RelaxationISO 6721-2 Plastics — DMA Tensile ModeISO 6721-7 Plastics — DMA Temperature SweepISO 7219 Glass Thermal Properties

ISO 11357-2 Plastics DSC Determination of Glass Transition Temperature Laboratory Testing Service: A Comprehensive Guide

1.1 Introduction to ISO 11357-2

ISO 11357-2 is a widely recognized standard for the determination of glass transition temperature (Tg) in plastics using differential scanning calorimetry (DSC). This standard provides guidelines and requirements for laboratories to conduct accurate and reliable Tg measurements.

1.2 Relevant Standards and Regulations

  • ISO 11357-2:2016(E): Plastics DSC Determination of Glass Transition Temperature

  • ASTM E1640-19: Standard Test Method for Determining the Glass Transition Temperature (Tg) of Polymers by Differential Scanning Calorimetry

  • EN 14851:2008A1:2014: Plastics DSC Determination of Glass Transition Temperature

    • 1.3 International and National Standards

    ISO 11357-2 is an international standard that is adopted by various national standards organizations, including:

  • ASTM (American Society for Testing and Materials)

  • EN (European Standardization Organization)

  • TSE (Turkish Standards Institution)

    • These standards ensure consistency and accuracy in Tg measurements across different regions and industries.

    1.4 Standard Development Organizations

    Standard development organizations, such as ISO, ASTM, and EN, play a crucial role in creating and updating standards like ISO 11357-2. These organizations bring together experts from various fields to discuss and agree on standard requirements, ensuring that they are relevant, effective, and consistent with industry needs.

    1.5 Standard Evolution and Updates

    Standards evolve over time as new technologies emerge, and industries adapt to changing demands. Regular updates ensure that standards remain current and relevant. In the case of ISO 11357-2, revisions have been made to improve accuracy, precision, and relevance to modern plastics testing.

    1.6 Specific Standard Numbers and Scope

  • ISO 11357-2:2016(E): This standard covers the determination of glass transition temperature (Tg) in plastics using DSC.

  • ASTM E1640-19: This standard provides a test method for determining Tg in polymers using DSC.

    • 1.7 Standard Compliance Requirements

    Compliance with ISO 11357-2 and related standards is essential for various industries, including:

  • Plastics manufacturing

  • Material science research

  • Quality control and assurance

    • Non-compliance can result in product rejection, recalls, or even lawsuits.

    2.1 Why ISO 11357-2 Testing is Needed and Required

    ISO 11357-2 testing is essential for ensuring the quality and performance of plastics products. Tg measurements provide critical information about a materials thermal properties, enabling manufacturers to:

  • Predict thermal stability

  • Optimize processing conditions

  • Ensure product safety

    • 2.2 Business and Technical Reasons for Testing

    Conducting ISO 11357-2 testing provides several business and technical benefits, including:

  • Improved product quality

  • Enhanced performance

  • Reduced production costs

  • Compliance with industry standards and regulations

    • 2.3 Consequences of Not Performing This Test

    Failure to conduct ISO 11357-2 testing can lead to:

  • Product failure or rejection

  • Costly recalls and rework

  • Damage to brand reputation

  • Non-compliance with regulatory requirements

    • 3.1 Test Equipment and Instruments

    ISO 11357-2 testing requires specialized equipment, including:

  • DSC instruments (e.g., TA Instruments Q100)

  • Thermogravimetric analyzers (TGA)

  • Temperature-controlled ovens or chambers

    • 3.2 Sample Preparation Procedures

    Sample preparation is a critical step in ISO 11357-2 testing. This involves:

  • Weighing and homogenizing samples

  • Preparing sample holders or pans

  • Ensuring proper thermal contact between the sample and the DSC instrument

    • 3.3 Testing Parameters and Conditions

    Testing parameters and conditions for ISO 11357-2 include:

  • Temperature range (e.g., -100C to 300C)

  • Heating rate (e.g., 10C/min to 50C/min)

  • Cooling rate (e.g., 5C/min to 20C/min)

    • 3.4 Measurement and Analysis Methods

    DSC measurements involve analyzing the heat flow between the sample and a reference material, typically an empty pan or a calibration standard.

    4.1 Report Format and Structure

    Test reports for ISO 11357-2 testing should include:

  • Sample identification

  • Testing parameters and conditions

  • Tg measurement results

  • Calculation of Tg values

  • Discussion of results and implications

    • 4.2 Electronic Reporting and Storage

    Electronic reporting and storage are essential for efficient data management and compliance with regulatory requirements.

    5. Conclusion

    ISO 11357-2 testing is a critical component of plastics quality control and assurance. This standard provides guidelines and requirements for laboratories to conduct accurate and reliable Tg measurements, ensuring the performance and safety of plastics products. Compliance with ISO 11357-2 is essential for various industries, including plastics manufacturing, material science research, and quality control.

    Appendix

  • Glossary of Terms

  • References

    • References

    1 ISO 11357-2:2016(E): Plastics DSC Determination of Glass Transition Temperature

    2 ASTM E1640-19: Standard Test Method for Determining the Glass Transition Temperature (Tg) of Polymers by Differential Scanning Calorimetry

    3 EN 14851:2008A1:2014: Plastics DSC Determination of Glass Transition Temperature

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