Glass Transition Temperature
The glass transition temperature Tg is a point on the temperature scale at which a polymer or glass changes into a rubbery, viscous state. However, this is not the same as the melting point.
Thermal Interface Materials – Overview and application
Thermal interface materials (TIMs) are used in the field of electronics to ensure efficient heat dissipation and prevent local temperature overloads.
Accurately measure Seebeck – importance in science and technology
The Seebeck effect enables the direct conversion of heat into electrical energy.
How does a pushrod dilatometer work?
A dilatometer is a measuring device for recording the thermal expansion of a material sample. The thermal expansion coefficient (CTE = Coefficient of Thermal Expansion) is calculated from the measurement results.
Crystallization and recrystallization of polymers
The properties of solids depend to a large extent on the arrangement of the particles (atoms and molecules) that make up the substances. If the arrangement is random, the substances are amorphous. In crystalline substances, the particles are arranged at regular intervals and in a fixed pattern.
Curing in thermal analysis
Materials that are processed in a liquid aggregate state generally require a certain amount of time to harden.
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Thermal conductivity of porous carbon materials
Porous carbon materials, in particular carbon aerogels, are the focus of current research. These materials are characterized by an extremely low thermal conductivity, which is mainly due to their porous structure and low bulk density.
Glass Transition Temperature
The glass transition temperature Tg is a point on the temperature scale at which a polymer or glass changes into a rubbery, viscous state. However, this is not the same as the melting point.
Thermal Interface Materials – Overview and application
Thermal interface materials (TIMs) are used in the field of electronics to ensure efficient heat dissipation and prevent local temperature overloads.
Accurately measure Seebeck – importance in science and technology
The Seebeck effect enables the direct conversion of heat into electrical energy.
How does a pushrod dilatometer work?
A dilatometer is a measuring device for recording the thermal expansion of a material sample. The thermal expansion coefficient (CTE = Coefficient of Thermal Expansion) is calculated from the measurement results.
Crystallization and recrystallization of polymers
The properties of solids depend to a large extent on the arrangement of the particles (atoms and molecules) that make up the substances. If the arrangement is random, the substances are amorphous. In crystalline substances, the particles are arranged at regular intervals and in a fixed pattern.
Curing in thermal analysis
Materials that are processed in a liquid aggregate state generally require a certain amount of time to harden.
Specific heat capacity (Cp) with modulated DSC
The specific heat capacity (cp), often referred to as specific heat, is a fundamental thermophysical property of a material. It says something about the ability to store thermal energy.
Measurement of the specific heat capacity (cp) using the transient heating wire method
The specific heat capacity is a fundamental thermophysical property of materials and is useful for assessing materials and their areas of application. It can be determined using dynamic differential scanning calorimetry (DSC).
Characterization of photovoltaic materials by measuring the Hall voltage
Characterization of photovoltaic materials – The charge carrier mobility in semiconductor materials is an important parameter for their usability in solar cells.
How to correctly calibrate a Differential Scanning Calorimeter
Correct calibration of a DSC – Why is correct calibration so important? Thermoanalytical measurements are often used in quality assurance;
Melting point, crystallization, and glass transition in polymers
Melting point, crystallization and glass transition in polymers – The change in the aggregate state of a solid from solid to liquid is called melting.
Measuring Specific Heat Capacity (cp) using Laser Flash Analysis (LFA)
The specific heat capacity cp, thermal diffusivity a and thermal conductivity λ are important thermophysical material properties for characterizing the thermal conductivity of materials.
Phase transitions with dilatometer
A dilatometer can be used to determine phase transitions in materials, as a phase change is also accompanied by a change in the coefficient of thermal expansion (CTE) of the material.
Measurement of thermal stability
A plastic is thermally stable if it does not decompose under the influence of temperature. The opposite of thermostability is thermolability.
Real-time insight into the grain growth with the non-destructive NDT technology laser ultrasound
In cooperation with Linseis Messgeräte GmbH and RECENDT GmbH (Research Center for Non-Destructive Testing GmbH), a real-time grain size determination system based on a dilatometer system (DIL L78/RITA) and an adapted laser-ultrasonic system (LUS) was developed.
Phase transition of a substance: Melting
Melting describes the phase transition of a substance from a solid state to a liquid state.
What happens during Crystallization (Tc)?
Crystallization describes the transition of a substance into a crystalline state. This can occur from the gas phase, solid phase or liquid phase.
Investigations of Hydrogen Storage Solutions
As the mass-specific energy density of hydrogen (33.3 kWh/kg) is one of the highest of all fuels, the use of hydrogen for mobility and as an energy storage medium was and is of great interest.
Specific heat capacity
The specific heat capacity indicates the ability of a substance to store heat. This material quantity corresponds to the amount of heat required to heat a certain amount of a substance by one Kelvin.
PCM – Phase Change Material
A second heat reservoir is the simple increase in temperature without a phase change. For such applications, the specific heat capacity of the storage material and its density should be high.
Thermal contact resistance
The thermal contact resistance characterizes the transfer of heat at the interface between two solids.
3D printing in ceramics
Ceramics are used in many areas of industry. As a rule, ceramics are first formed as green bodies from raw mass before this “green body” is then treated in a special way and fired (so-called sintering).
3D Printing Polymers
Injection molding, often also referred to as injection molding or injection molding process, which is based on primary molding. The injection molding machine liquefies the plastic in granulate form.
Thermal insulation and thermal insulation materials
Whenever objects with different temperatures are in physical contact or are in the area of radiant influences, heat exchange takes place.
Biomass
Biomass is the term used to describe the weight or total amount of living organisms in a given area or ecosystem at a given time
Analysis of thermoelectric materials – the figure of merit and its measurement
Thermoelectric materials can convert heat directly into electrical energy. This property is based on the Seebeck effect, in which a temperature difference applied to a material generates a voltage.
What does thermal conductivity mean?
In general, the thermal conductivity of the expression is the amount of heat that flows through a 1x1x1m cube of a material within 1 second if there is a temperature gradient of exactly 1 K between two opposite sides.
3D printing with metals – Thermal analyses
Metals are used almost everywhere in many industrial sectors for a wide variety of purposes.
Raman spectroscopy with DSC
Raman spectroscopy is a technique for investigating molecules and determining their structure and dynamics.
Determination of the CTE density
The thermal expansion of materials can lead to major economic damage. In the construction industry, for example, expansion joints must be provided to compensate for changes in length due to temperature fluctuations.
Thermal Impedance
Thermal management is a decisive factor in electronic devices, as overheating of components can lead to failures. The aim is therefore to transfer the heat generated by the electronics to a cooling device, e.g. a heat sink or heat sink.
Deformation techniques of metals
The deformation of metals is a crucial process in modern industry, with a wide range of applications from automotive manufacturing to aerospace.
Phase change analysis with DSC
What is a phase transition – Materials can be categorized and described in different ways. This can be based on their external appearance, certain physical parameters or more subjective impressions such as smell or taste.
DC and AC Hall Effect Measurements
The investigation of the Hall effect of a material is used specifically to determine the Hall coefficient as well as the charge carrier concentration, the charge carrier type and the mobility.
Polyamides: An Overview
Polyamides often present themselves as semi-crystalline materials with a mixture of ordered, crystalline structures and disordered, amorphous areas.
Martensitic transformations: The alchemy of hardness in metallurgy
There are few phenomena in the world of metallurgy that are as fascinating and at the same time as practical as martensitic transformation.
Phase transformations in metallurgy: a key to material innovation
Metallurgy is a science that is as old as civilization itself. Yet despite its ancient roots, it remains a field at the forefront of innovation.
High-density polyethylene (HDPE): An inside look
High-density polyethylene (HDPE) and polyethylene (PE) are both types of polyethylene, but they have different properties due to differences in production.
Endothermic vs. exothermic reactions
The main difference between exothermic and endothermic reactions lies in the heat exchange with the environment.
Polyethyleneterephthalate (PET): An in-depth investigation
Polyethylene terephthalate, commonly referred to as PET, occupies an important place in numerous industrial and commercial productions.
Polyvinyl chloride (PVC): An in-depth investigation
Polyvinyl chloride, also known as PVC, is a versatile thermoplastic that plays an important role in many industrial and commercial sectors.
Polystyrene (PS): A detailed analysis
Polystyrene, also known as polystyrene, is a widely used polymer produced by the polymerization of styrene.
Low density polyethylene (LDPE): A summary
Low density polyethylene, LDPE, is a thermoplastic polymer made from the monomer ethylene. It is a highly branched plastic.
Oxidation induction time and temperature
Oxidation is a chemical process that takes place when electrons are lost from a molecule, atom or ion.
Molten Salts – Heat transfer of the future
Molten salts are stable at high temperatures above 300 °C and exhibit remarkable thermal properties.
Acrylonitrile butadiene styrene (ABS): An in-depth look
Semiconductors with a larger energy gap (Eg) than conventional semiconductors, typically in the range above 2 eV, are referred to as wide bandgap semiconductors (WbGs).
Thermal Interface Materials – Heat Spreaders
Heat spreaders are thermally conductive objects that act as a bridge between a heat source and a heat exchanger.
Vespel™: The high-performance polymer revolutionizing extreme applications
Vespel™, developed by DuPont, is a high-performance polymer known for its ability to withstand extreme thermal, electrical and mechanical stresses.
Wide-Bandgap Semiconductors
Semiconductors with a larger energy gap (Eg) than conventional semiconductors, typically in the range above 2 eV, are referred to as Wide-Bandgap Semiconductors (WbG’s).
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