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Differential Scanning Calorimetry (DSC) Analysis

Differential Scanning Calorimetry (DSC) is a powerful tool for evaluating the thermal properties of rubber and polymer materials. At Cornerstone Materials Group (CMG), we utilize state-of-the-art DSC instrumentation to provide precise, repeatable data that supports material development, quality control, and failure analysis.

What is DSC?
DSC measures the heat flow associated with material transitions, such as melting, crystallization, and glass transition. A small material sample is heated alongside an inert reference, and exothermic or endothermic reactions are recorded. This enables manufacturers to benchmark material performance and optimize formulations.

What Does DSC Measure?

  • Glass Transition Temperature (Tg): Indicates when a material shifts from a rigid to a flexible state, critical for understanding temperature limits.
  • Melting Point: Differentiates polymer types (e.g., copolymer vs. homopolymer) and detects contamination in recycled materials.
  • Crystallinity Level: Evaluates shrinkage, material properties, and chemical resistance.
  • Cure State: Identifies incomplete curing in cross-linked materials.
  • Oxidation Induction Time (OIT): Assesses a material’s resistance to oxidative degradation.
  • Specific Heat Capacity (Cp): Quantifies the heat required to raise the temperature of the material.

Key DSC Test Methods

  • ASTM D7426: Determines glass transition temperature for polymers and elastomers.
  • ASTM D3418: Measures melting points, heat of fusion, and crystallization properties.
  • ASTM D3895: Evaluates oxidative induction time in polyolefins.

Why Use DSC?

  • Precision & Repeatability: Provides highly accurate data with minimal error.
  • Versatility: Ideal for raw polymers, mixed compounds, and additives.
  • Ease & Speed: Quickly evaluate thermal transitions and material properties.

Why Choose CMG?
With advanced equipment and expert technicians, we deliver reliable thermal analysis to guide your material development, quality assurance, and compliance efforts. Contact us today to learn how DSC testing can optimize your products.