Awarded the "Minister of Economy, Trade and Industry Award for the 2024 Industrial Standardization Project"! [JIS standardization of the thermal diffusivity measurement method for graphite sheets]

Introducing devices for measuring the thermal diffusivity of sheet-like and plate-like materials, as well as thermal evaluation devices for fiber orientation distribution!

Introducing Bethel's thermal property measurement devices. The "Thermo Wave Analyzer TA33/35" is a measurement device for the thermal diffusivity of sheet and plate materials, capable of measuring the thermal diffusivity of functional materials. The "Thermal Microscope TM" has been commercialized through joint development with the National Institute of Advanced Industrial Science and Technology's Measurement Standards Division, allowing for measurements in micro-regions and thin films. Additionally, we offer the "Thermal Imaging Scope TSI," which visualizes thermal conduction paths using infrared cameras and lasers, as well as the "Fiber Orientation Evaluation System TEFOD." 【Features of the Thermo Wave Analyzer TA33/35】 ■ High freedom of sample shape ■ Dynamic range from organic films to diamonds ■ Anisotropy evaluation through measurements in horizontal and vertical directions ■ Evaluation of defects and irregularities through distribution measurements *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

The anisotropy of the graphite sheet (in-plane direction and thickness direction) has become measurable!

○ Anisotropy of graphite sheets (in-plane direction and thickness direction) ○ Thermal diffusivity ○ Thermal conductivity

• Optical microscope

Non-contact measurement of thermal diffusivity using a laser. Measurement of resin-based materials is also possible.

The ThermoWave Analyzer TA measures thermal diffusivity using a non-contact method with a laser. Since the thermal conductivity of composite materials made of fillers and resins varies significantly with the mixing ratio, measuring thermal diffusivity is essential. Measurement of resin-based materials is also possible. Please contact us for more details.

• Logic Analyzer

It will help in the development of high thermal conductivity materials! 【Cooling of semiconductor devices / heat sinks】

■Measurement of thermal properties of carbon nanotube (CNT) applied materials ■Surface treatment is unnecessary (in the case of carbon-based materials) ■Essential for the development of high thermal conductivity materials! ■Non-contact measurement

• Composite Materials

Thermal conductivity distribution measurement and the anisotropy of thermal diffusivity in each part can be evaluated.

Here is an example of evaluating thin polyimide sheets. Polyimide sheets are resin materials primarily used as insulating substrates and insulating layers in electronic circuits. This time, we measured the thermal diffusivity in the thickness direction using a ThermoWave Analyzer TA on a sheet with a thickness of 7.5 μm. Even with the same polyimide sheet, there are significant thermal differences depending on the thickness. When comparing examples of 25 μm and 7.5 μm using the measure of thermal diffusion time, there is nearly a tenfold difference. The thinner sheet diffuses heat in one-tenth the time. For in-plane measurements, it is relatively easy to achieve time resolution since the distance between the heating point and the detection point can be established. However, for thickness direction measurements, it is necessary to detect rapid temperature changes, which affects the basic performance of the equipment. Traditional measurement methods make the measurement itself difficult. Additionally, at a thickness of 7.5 μm, the thermal effects of surface blackening treatment cannot be ignored, so we have devised methods to minimize these effects during sample preparation and measurement. The measurement results are as follows: Thermal diffusivity in the thickness direction: 0.103 × 10^-6 m²s^-1. This value is approximately 30% lower compared to the 25 μm thick polyimide.

• Other physicochemical equipment

Non-contact measurement of thermal diffusivity using a laser. Measurement of materials with high thermal conductivity is possible.

The ThermoWave Analyzer TA3 measures thermal diffusivity using a non-contact method with a laser. It is capable of measuring materials with high thermal conductivity. Measurements can be taken without worrying about the shape. For more details, please contact us.

• Logic Analyzer

Bulk, thin film, micro areas, plate-shaped, sheet-shaped, almost all materials can be accommodated. Please consult us once.

Supports various thermal conductivity measurement methods such as steady-state method, periodic heating method, and thermoreflectance method. Compatible with plate-shaped, sheet-shaped, soft samples, fibrous materials, and various shapes. Please consult us even for samples that have been rejected by other companies.

• Contract measurement

Thermal evaluation of gallium nitride, known for blue LEDs and semiconductor materials!!

■Evaluation of particles with a micro size (3μm and above) ■Evaluation of thermal conductivity of thin films ■Measurement possible at submicron order

• Microscope

Thermal conductivity distribution measurement and the anisotropy of thermal diffusivity in each part can be evaluated.

In recent years, the miniaturization and high output of electronic devices have rapidly advanced, and as a result, thermal management (heat dissipation) has become a very important issue. Traditionally, heat dissipation has been maintained by using metals, but in recent years, it has begun to be replaced by "high thermal conductivity resins." High thermal conductivity resins are "lightweight" and have "moldability" compared to traditional metals, are "corrosion-resistant," and above all, have the advantage of being "low-cost." However, there is also the disadvantage of low thermal conductivity, and many material manufacturers are actively developing solutions to address this issue. It is expected that "high thermal conductivity resins" will become mainstream in the future. On the thermal properties blog, we introduce examples of thermal conductivity measurements of "high thermal conductivity resins." http://blog.thermal-measurement.info/archives/cat_50051425.html

• Other physicochemical equipment

Understanding the mechanism of heat transfer and effectively dissipating heat is important! Here we introduce various methods for measuring thermal properties.

Due to factors such as "miniaturization = fanless design" and "widespread use of power devices = increased heat generation," thermal issues have become important. Thermal conductivity measurement can be broadly classified into two categories: "steady-state method" and "transient method." The steady-state method provides direct thermal conductivity values and requires relatively large samples. The transient method can measure thermal diffusivity and thermal effusivity, and it is possible to measure with relatively small samples. We provide further detailed explanations, so please take a look at the PDF download below. 【Characteristics of the "Steady-State Method" and "Transient Method"】 ■ Steady-State Method - Direct thermal conductivity can be obtained - Requires relatively large samples ■ Transient Method - Can measure thermal diffusivity and thermal effusivity - Can measure with relatively small samples - Requires specific heat capacity and density *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

AlphaGemBio's filter tips have achieved excellent liquid release through improvements in resin and mold structure. They are a universal type that fits most pipettes. The high-performance ULDPE filter protects you and your pipetter. 【Product Specifications】 ■10μl filter tip ■20μl filter tip ■200μl filter tip ■275μl filter tip *For more details, please download the PDF or contact us.

The high-voltage fuse "EVFP 38x64 500V" has a proven track record of being adopted by many automobile manufacturers. It is a compact and lightweight automotive high-voltage fuse with excellent vibration resistance, and it is commonly used as a fuse for main circuit protection in high-voltage battery packs, drive motors, and charging systems for BEVs and HEVs. It is often adopted as an automotive fuse for high-voltage circuits to meet the needs of hybrid and electric vehicles. The EV fuse developed by PEC has been adopted not only by domestic manufacturers but also by automobile manufacturers worldwide, and it continues to be improved, becoming the global standard for fuses.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is kept to a minimum. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The low-voltage fuse "SBFW-K" is a slow blow fuse that can withstand temporary overcurrents and only blows under continuous overcurrents. It is particularly effective for devices in automobiles that experience instantaneous high currents. This low-voltage fuse is recommended for those facing circuit protection challenges in the automotive industry, construction machinery industry, and low-voltage fuses (below DC70V). It is well-suited for protecting high-power devices that have a large inrush current at startup.

The low-voltage fuse "SBFW-K48V-M8" is a slow blow fuse that can withstand temporary overcurrents and only blows under continuous overcurrent conditions. There are also 48V compatible slow blow fuses specifically designed for high-voltage systems such as hybrid vehicles and electric vehicles (EVs). It plays a role in protecting the entire vehicle during abnormal conditions in circuits that supply power from the battery to the entire vehicle or in the power supply system.