This is a case study analyzing battery graphite using the newly released powder rheology accessories from 2022.
Powder materials are used in various fields such as polymers, pharmaceuticals, and battery materials. In addition to general physical properties like particle size and density, these powders can take various forms such as storage, flow, and agglomeration, making it necessary to evaluate their physical properties while considering the environment in which they will be used. To effectively evaluate these physical properties with high precision and convenience, a new powder accessory for HR rheometers was launched in 2022. In this instance, we will focus on "graphite for batteries" and present a case study of powder rheology analysis.
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basic information
【Device Lineup/Main Evaluation Items】 <DSC Differential Scanning Calorimeter> Melting heat, temperature/glass transition temperature/crystallization, melting/reaction heat, temperature/oxidation <TGA Thermogravimetric Analyzer> Thermal decomposition temperature/quantification of composite material composition/residual solvent amount/kinetic analysis of decomposition reactions <TMA Thermomechanical Analyzer> Glass transition temperature/thermal expansion coefficient/residual strain <DMA Dynamic Mechanical Analyzer> Glass transition temperature/elastic modulus, Young's modulus/frequency dependence/master curve/creep characteristics <Rheometer> Viscoelastic properties/glass transition temperature/elastic modulus/frequency dependence/master curve/thixotropy
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Applications/Examples of results
【Applications】 ☆ Thermal analysis / glass transition, crystallization, thermogravimetric analysis, curing reactions, expansion rate, thermal conductivity, shrinkage rate, effects of moisture, etc. ☆ Viscoelasticity measurement (rheology, rheometer) / viscoelasticity, elastic modulus, viscosity, stress relaxation, creep, master curve, residual strain, molecular weight, molecular weight distribution, etc. ☆ Calorimetry (calorimeter) / intermolecular interactions, crystallization, amorphousness, aggregation/precipitation, dispersibility, solubility, compatibility, wettability, stability, adsorption, etc. 【Examples of Achievements】 ■ Aerospace ■ Asphalt ■ Automotive ■ Ceramics ■ Elastomers ■ Electrical ■ Food ■ Personal care ■ Biomedical ■ Paints and coatings ■ Inks ■ Petroleum products ■ Pharmaceuticals, etc.
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Company information
TA Instruments Japan is a wholly-owned subsidiary of TA Instruments in Japan. We sell and provide maintenance support for thermal analysis, rheology, microcalorimeters, and mechanical analysis equipment, conduct demonstration measurements, and hold technical seminars, offering the latest information on materials and engaging in the development of measurement technologies for materials. 【Main Equipment Handled】 ☆ Thermal Analysis / Differential Scanning Calorimeter (DSC), Thermogravimetric Analyzer (TGA), Simultaneous Differential Thermal Analysis (SDT/TG-DTA), Vapor Adsorption/Desorption Analyzer (Q5000SA) ☆ Viscoelastic Measurement (Rheology) / Rotational Rheometer (DHR・ARES), Dynamic Mechanical Analyzer (RSA・DMA・EF3200), Rubber Testing Cure Meter (RPA) ☆ Microcalorimetry / Isothermal Titration Calorimeter (ITC), Microcalorimeter (NanoDSC), Isothermal Calorimeter (TAM) ☆ Thermal Property Measurement Equipment / Thermal Conductivity Meter (DTC・FOX), Thermal Diffusivity Meter (DLF, DXF), Thermal Expansion Meter (TMA, DIL), Optical Thermal Expansion Meter (ODP, HM) ☆ Fatigue Testing Machines / ElectroForce Series, BioDynamic Series