Evaluation of thermal degradation rubber by DMA

Dynamic mechanical analysis (DMA) allows for the evaluation of states from low to high temperatures.

This introduces the evaluation of thermally degraded rubber using dynamic viscoelastic measurements. A constant temperature bath capable of circulating air within the chamber was used as a suitable device for thermal degradation testing, heating NBR rubber and EPDM rubber at 100°C for a specified duration. The changes in viscoelastic behavior due to heating time were investigated. For both types of rubber, as the heating time increased, the tanδ (= E"/E') peak shifted towards the high-temperature side, and a decrease in peak value was observed. It is believed that the loss of rubber elasticity and the decrease in elastic modulus resulted in the Tg shifting towards the high-temperature side. By measuring dynamic viscoelasticity, it becomes possible to confirm the changes in physical properties associated with material degradation and to gain insights into structural changes. Additionally, conducting other chemical analyses can clarify more specific changes in chemical structure. 【Test Overview】 ■ A constant temperature bath capable of circulating air within the chamber was used ■ NBR rubber and EPDM rubber were heated at 100°C for a specified duration ■ Changes in viscoelastic behavior due to heating time were investigated *For more details, please download the PDF or feel free to contact us.

• Other analytical equipment

An article has been published regarding the case study of the attendance management system "KING OF TIME" implemented at Nichirei Industrial Co., Ltd. ~ In the case of Nichirei Industrial ~ The workload related to attendance management has decreased. With the transition from analog tasks to automated aggregation of working hours and granting of annual leave, we can now focus on our work with peace of mind. Particularly regarding the "punching method," we utilize fingerprint and facial recognition. By using biometric authentication, impersonation is not possible, and I believe the accuracy of attendance has significantly improved. Transparency has been ensured. 【Case Overview】 ■Challenges Before Implementation - Handwritten attendance sheets were used, resulting in input tasks to incorporate data into the payroll system. ■Key Points of Implementation - Systematization has reduced input tasks. Biometric authentication prevents impersonation. *For more details, please refer to the related links or feel free to contact us.

The non-contact beam touch sensor "HA-T401/HA-T520" has a compact detection range, making it an ideal automatic door sensor for installation on automatic doors facing narrow corridors or busy streets. Depending on the application and installation location, you can choose between "non-vision mounting type" and "non-vision built-in type." 【Features】 ● With the beam touch sensor, you can open and close the automatic door simply by bringing your hand close without touching it, ensuring hygiene. ● Depending on the installation environment, such as single sliding or bi-parting doors, the detection range can be set in four configurations: left, center, right, and a total of 12 spots. ● Two types of activation row settings are available to reduce unnecessary opening and closing of the automatic door due to cross traffic, contributing to energy-saving effects. ● The touch switch and infrared sensor are integrated, allowing for a switch between beam touch and infrared sensor with a single model. 【Recommended for such locations!】 ☑ Entrance facing a busy corridor ☑ Counter or sign near the door ☑ Buildings facing narrow corridors ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors ◎ For more details, please download the materials or contact us.

Do you have any concerns or requests regarding wired bed exit sensors? × Tangling or tripping over wired cables × Cable disconnection or damage × Worrying about forgetting to turn the switch back on after temporarily stopping the sensor. × Wanting to be notified of bed exits even from a location far from the nurse call outlet. Such concerns can be resolved simply by connecting our wireless nurse call linked set to the sensor! Our wireless nurse call linked set allows you to connect bed exit sensors like "Ugo-kun," "Foldable Thin Matta-kun," "Ayumi-chan," and "Just Place Pole-kun" to transmitters and receivers, reducing wiring around the bed area, alleviating concerns about tripping or falling due to cables, and contributing to a tidier work environment. Furthermore, it enables the use of bed exit sensors even from locations far from the nurse call outlet, allowing for more flexible equipment placement.

[To the owners of parking lots and parking lot construction companies] "I'm worried about not colliding with pedestrians when exiting the parking lot..." Among vehicle entrances to parking lots, stores, residences, and factories, particularly at entrances facing sidewalks or roadways, there is a risk of dangerous incidents such as collisions with pedestrians or between vehicles. To alleviate such concerns, Hotron proposes a [Vehicle Exit Warning Sensor] that detects vehicle departures using various sensors and alerts the surrounding area with LED lights and buzzers. The system consists of a simple configuration of "sensor" + "controller" + "switching power supply (24V)" + "LED rotating light." *Please note that a separate control panel is required to include the controller and switching power supply (24V) when using the exit warning system. *We kindly ask customers to arrange for the switching power supply (24V), LED rotating light, control panel, circuit breakers, etc. Since it can be retrofitted, it can also be used for existing parking lot entrances. We hope this will contribute to safer vehicle passage for everyone. ◎ For more details, please contact us or download the catalog.

Hotron's vehicle detection sensors allow you to search for products that meet your needs from three categories: "Purpose of Use," "Location of Use," and "Product List." The sensors detect the passage of vehicles and notify you with a rotating light, or switch the display of parking availability. They manage vehicle presence, full parking, and exit warnings in parking lots, contributing to safe driving and smooth operational management within the parking area. They are used in various settings, from coin-operated parking to large-scale parking lots.