VIP member
Dynamic Thermomechanical Analyzer DMA 242 E Artemis
Dynamic Thermomechanical Analyzer DMA 242 E Artemis
Product details
The Naichi DMA242E dynamic thermomechanical analyzer can be used for: (1) storage modulus (rigidity); (2) Loss modulus (damping); (3) Viscoelasticity; (4) Glass transition; (5) Softening temperature; (6) Creep; (7) Relaxation; (8) Second-order phase transition; (9) Curing process.
The main features of the Naichi DMA242E dynamic thermomechanical analyzer are:
①Bottom mounted sample installation design, convenient sample installation operation②Sealed furnace body, capable of passing inert atmosphere, controllable flow rate③Multiple different cooling methods to choose from④Support static mode testing⑤New load sensing and control technology with a wider load range⑥Can achieve higher load resolution within a smaller load range⑦Multiple sample holders, widely applicable⑧Scalable immersion testing, UV system, DEA combination
Technical parameters of Naichi DMA242E dynamic thermomechanical analyzer:
•Temperature range:- 170 … 600°C
•Modulus range: 10-3... 106MPa
•Tan δ range: 0.00006... 100
•Maximum applied force: 24N
•Cooling equipment: Compressed air, liquid nitrogen refrigeration
•Special attachments: humidity attachment, UV curing attachment
•Special fixtures: liquid, rigid materials, insulation materials
•Unique Fourier analysis filtering method, excellent signal-to-noise ratio
•Can be used in conjunction with DEA to conduct in-depth research on resin curing process
①Bottom mounted sample installation design, convenient sample installation operation②Sealed furnace body, capable of passing inert atmosphere, controllable flow rate③Multiple different cooling methods to choose from④Support static mode testing⑤New load sensing and control technology with a wider load range⑥Can achieve higher load resolution within a smaller load range⑦Multiple sample holders, widely applicable⑧Scalable immersion testing, UV system, DEA combination
Technical parameters of Naichi DMA242E dynamic thermomechanical analyzer:
•Temperature range:- 170 … 600°C
•Modulus range: 10-3... 106MPa
•Tan δ range: 0.00006... 100
•Maximum applied force: 24N
•Cooling equipment: Compressed air, liquid nitrogen refrigeration
•Special attachments: humidity attachment, UV curing attachment
•Special fixtures: liquid, rigid materials, insulation materials
•Unique Fourier analysis filtering method, excellent signal-to-noise ratio
•Can be used in conjunction with DEA to conduct in-depth research on resin curing process
DMA 242 E Artemis - Software Features
The measurement and analysis software of DMA 242E Artemis is based on Microsoft Windows®Proteus of the system®The software package includes all necessary measurement and data analysis functions.
This software package has an extremely user-friendly interface, including easy to understand menu operations and automated workflows, and is suitable for various complex analyses.
Proteus®The software can be installed on the control computer of the instrument to work online, or installed on other computers for offline use.
DMA software functions:
Multiple DMA parameters can be selected from numerous options, such as storage modulus, loss modulus, loss factor, length variation, etc., and displayed in logarithmic or regular coordinates. The Y-axis supports up to four, and there is no limit to the number of parameters (curves) displayed.
Measurement parameters (such as force, displacement, amplitude, offset, etc.) can be plotted against time, temperature, or frequency.
Data point labeling function.
It can display the length change curve and calculate the linear expansion coefficient.
Extrapolation calculation is performed based on the WLF equation to obtain the main curve.
Conversion activation energy calculation.
Cole Cole diagram.
Force/deformation time diagram of relaxation/creep mode (optional).
Force amplitude spectrum of stress/strain scanning mode (optional).
3D Graph Function
The measurement and analysis software of DMA 242E Artemis is based on Microsoft Windows®Proteus of the system®The software package includes all necessary measurement and data analysis functions.
This software package has an extremely user-friendly interface, including easy to understand menu operations and automated workflows, and is suitable for various complex analyses.
Proteus®The software can be installed on the control computer of the instrument to work online, or installed on other computers for offline use.
DMA software functions:
Multiple DMA parameters can be selected from numerous options, such as storage modulus, loss modulus, loss factor, length variation, etc., and displayed in logarithmic or regular coordinates. The Y-axis supports up to four, and there is no limit to the number of parameters (curves) displayed.
Measurement parameters (such as force, displacement, amplitude, offset, etc.) can be plotted against time, temperature, or frequency.
Data point labeling function.
It can display the length change curve and calculate the linear expansion coefficient.
Extrapolation calculation is performed based on the WLF equation to obtain the main curve.
Conversion activation energy calculation.
Cole Cole diagram.
Force/deformation time diagram of relaxation/creep mode (optional).
Force amplitude spectrum of stress/strain scanning mode (optional).
3D Graph Function
DMA 242 E Artemis - Application Example
SBR rubber mixture - multi frequency measurement and main curve
The multi frequency test spectrum of SBR rubber mixture is shown in the figure. As expected, with the increase of frequency, the glass transition temperature drifts towards high temperature, and the storage modulus also increases accordingly. (Experimental conditions: 2K/min heating, double cantilever mode)
SBR rubber mixture - multi frequency measurement and main curve
The multi frequency test spectrum of SBR rubber mixture is shown in the figure. As expected, with the increase of frequency, the glass transition temperature drifts towards high temperature, and the storage modulus also increases accordingly. (Experimental conditions: 2K/min heating, double cantilever mode)
On the basis of multi frequency testing, if the Williams Landel Ferry (WLF) equation is used to extrapolate based on a reference temperature (-20 ° C in the figure), the frequency extrapolation curve (main curve, also known as TTS curve) can be obtained to calculate the E 'and tan δ values at extremely high and low frequencies that cannot be achieved by conventional testing.
Glass fiber reinforced PBT
In the figure, a 30% glass fiber reinforced PBT material was subjected to DMA testing in parallel and perpendicular to the fiber direction using three-point bending mode, frequency of 1Hz, and heating rate of 2K/min. The experimental results show that the storage modulus in the parallel direction (straight line) is significantly higher, and the starting point of E 'decrease is at 43 ° C. The loss factor value is also relatively small, and the peak of the loss factor for both occurs at the same temperature.
In the figure, a 30% glass fiber reinforced PBT material was subjected to DMA testing in parallel and perpendicular to the fiber direction using three-point bending mode, frequency of 1Hz, and heating rate of 2K/min. The experimental results show that the storage modulus in the parallel direction (straight line) is significantly higher, and the starting point of E 'decrease is at 43 ° C. The loss factor value is also relatively small, and the peak of the loss factor for both occurs at the same temperature.
Carbon fiber reinforced epoxy resin
The single cantilever sample holder with a free push rod is specially designed for precise measurement of very hard samples. One end of the sample is tightly fixed, while the other end is subjected to oscillation testing using a free push rod.
The DMA test results of a certain carbon fiber reinforced epoxy resin are shown in the figure on the right. As shown in the figure, the storage modulus of the sample at 50 ℃ is as high as 145000Mpa, indicating that the modulus of the material is even higher than that of titanium metal. Due to the glass transition of the epoxy substrate, the storage modulus curve decreases after 159 ℃ (starting point), with a corresponding peak loss modulus of 171 ℃ and a peak loss factor of 176 ℃.
The DMA test results of a certain carbon fiber reinforced epoxy resin are shown in the figure on the right. As shown in the figure, the storage modulus of the sample at 50 ℃ is as high as 145000Mpa, indicating that the modulus of the material is even higher than that of titanium metal. Due to the glass transition of the epoxy substrate, the storage modulus curve decreases after 159 ℃ (starting point), with a corresponding peak loss modulus of 171 ℃ and a peak loss factor of 176 ℃.
DMA measurement spectrum of high rigidity carbon fiber reinforced epoxy resin
Sample holder: single cantilever+free push rod, 20mm span
Measurement parameters: heating rate 3K/min, frequency 10Hz, amplitude ± 40 μ m
Sample holder: single cantilever+free push rod, 20mm span
Measurement parameters: heating rate 3K/min, frequency 10Hz, amplitude ± 40 μ m
Tensile testing of polyester fibers
Polyester fibers were tested in tensile mode, and the results showed that there was a relaxation effect in the low temperature range of the sample. Its characteristic temperature can be characterized by the starting point of E 'or the peak temperature of E' and TG δ. The glass transition occurs after 75 ° C, and the storage modulus decreases from 4200Mpa to 200Mpa.
Polyester fibers were tested in tensile mode, and the results showed that there was a relaxation effect in the low temperature range of the sample. Its characteristic temperature can be characterized by the starting point of E 'or the peak temperature of E' and TG δ. The glass transition occurs after 75 ° C, and the storage modulus decreases from 4200Mpa to 200Mpa.
Fiberglass Reinforced PBT - Dynamic Mechanical Properties
We tested the dynamic mechanical properties of 30% fiberglass reinforced PBT material under the conditions of three-point bending mode, 1Hz frequency, and 2K/min heating rate (tested along both parallel and perpendicular directions to the fibers). The test results indicate that the sample has higher strength along the fiber direction compared to perpendicular to the fiber direction, and the starting point of E 'decrease is 43 ℃ (solid line). The loss factor value is correspondingly lower, and the peak temperature of the loss factor is consistent in both directions.
Uncured EVA - determination of glass transition temperature
The DMA test was conducted by the German Federal Association for Materials Research and Testing (BAM). The multi frequency (0.33Hz, 1Hz, 3.33Hz, 10Hz, 33.3Hz) test uses a double cantilever sample holder with a heating rate of 2K/min and an amplitude of 40um.
The graph indicates that this is a typical glass transition behavior. The storage modulus E 'rapidly decreases at -40 ℃, while E' 'exhibits a clear peak. There is a clear dependence between glass transition and vibration frequency: the higher the frequency, the higher the glass transition temperature.
These DMA results can be used to help us determine the activation energy of glass transition. It can be observed that there is a linear correlation between ln (f) and 1/T. By the slope of this line, we can calculate the apparent activation energy of the transition. The calculated result is 328 kJ/mol, which is within the reasonable range of glass transition activation energy.
The graph indicates that this is a typical glass transition behavior. The storage modulus E 'rapidly decreases at -40 ℃, while E' 'exhibits a clear peak. There is a clear dependence between glass transition and vibration frequency: the higher the frequency, the higher the glass transition temperature.
These DMA results can be used to help us determine the activation energy of glass transition. It can be observed that there is a linear correlation between ln (f) and 1/T. By the slope of this line, we can calculate the apparent activation energy of the transition. The calculated result is 328 kJ/mol, which is within the reasonable range of glass transition activation energy.
Storage modulus E 'and loss modulus E' 'of uncured EVA in the frequency range of 0.33Hz to 33.3Hz
As the frequency increases, the peak temperature of E "rises from -34.7 ℃ to -27.6 ℃
As the frequency increases, the peak temperature of E "rises from -34.7 ℃ to -27.6 ℃
Arrhenius diagram of ln (f) -1/T for peak temperature of E ''
DMA 242 E Artemis - Related attachments
Sample holder suitable for various applications
DMA 242E Artemis is suitable for testing various samples, whether they are liquids, high filling thermosetting resins, or metals and ceramics.
To obtain accurate results, it is necessary to select the most suitable testing conditions for different material applications. Therefore, Nike has developed a wide range of sample holders, accessories, and measurement modes, with a wide selection of options.
Sample holder suitable for various applications
DMA 242E Artemis is suitable for testing various samples, whether they are liquids, high filling thermosetting resins, or metals and ceramics.
To obtain accurate results, it is necessary to select the most suitable testing conditions for different material applications. Therefore, Nike has developed a wide range of sample holders, accessories, and measurement modes, with a wide selection of options.
Humidity generator
Humidity generators are mainly used for studying the water adsorption process of solidified samples and other organic materials. By using a humidity generator, a measurement atmosphere with a relative humidity between 5% and 95% can be created, with a temperature range of room temperature to 70 ° C.
UV light source
DMA 242E Artemis supports OmniCure S2000 UV lamp as a UV light source to study light triggered reactions, such as UV curing of adhesives, inks, and coatings. You can use NETZSCH Proteus ® Software to control the duration and intensity of ultraviolet radiation. UV irradiation can trigger at any temperature range during testing.
Cooling accessories
The instrument supports two different cooling systems. The liquid nitrogen cooling system can linearly cool down to -170 ° C, and the air compression cooling with vortex tubes can lower the temperature to 0 ° C.
Humidity generators are mainly used for studying the water adsorption process of solidified samples and other organic materials. By using a humidity generator, a measurement atmosphere with a relative humidity between 5% and 95% can be created, with a temperature range of room temperature to 70 ° C.
UV light source
DMA 242E Artemis supports OmniCure S2000 UV lamp as a UV light source to study light triggered reactions, such as UV curing of adhesives, inks, and coatings. You can use NETZSCH Proteus ® Software to control the duration and intensity of ultraviolet radiation. UV irradiation can trigger at any temperature range during testing.
Cooling accessories
The instrument supports two different cooling systems. The liquid nitrogen cooling system can linearly cool down to -170 ° C, and the air compression cooling with vortex tubes can lower the temperature to 0 ° C.
Online inquiry
-
Contacts
-
Company
-
Telephone
-
Email
-
WeChat
-
Verification Code
-
Message Content
-