石川工場 List of News Articles

On September 11, 2024, we began selling the new product Tiny Plus. It enhances the existing Tiny product by adding a timer function and a rotation speed adjustment feature. 【Features】 - Maintains the basic performance of the Ishikawa-style stirring and grinding machine while achieving the smallest size. - Processing volume is 0.03 liters. - Ideal automatic mortar for researchers and developers who perform grinding tasks manually with a mortar and pestle. - The pestle tube has a built-in spring, allowing for stirring and grinding while applying pressure. - Equipped with a timer, enabling multitasking while grinding. - Features a rotation speed adjustment function, allowing grinding under various conditions. - Includes LED lighting for easy monitoring of processing status. - Designed for easy mobility and storage with a detachable AC cord. - Improved chemical resistance due to the use of a stainless steel casing, expanding its applications in laboratories and clean rooms. - Standardly equipped with an acrylic cover for splash prevention and safe handling. - Its ultra-compact and tabletop design allows for use within fume hoods or glove boxes, making it possible to grind substances containing organic solvents, provided the cover material is appropriately selected.

**Summary** The particle size distribution was measured when glass fragments were crushed using an automatic mortar AGB. After crushing standard microscope slide glass to about 3.5mm, it was further pulverized using the automatic mortar AGB. The crushing time was 5 hours, and the particle size measurement was conducted using a laser diffraction device. **Conclusion** Glass fragments of standard microscope slide glass crushed to about 3.5mm were pulverized using the automatic mortar (Ishikawa-type stirring grinder) AGB. The particle size reached saturation in about 3 hours, achieving a size of approximately 1.7μm. **Testing Equipment** - Testing Equipment - Automatic mortar (Ishikawa-type stirring grinder): AGB - Laser diffraction/scattering particle size distribution measurement device: LA-950V2 (Horiba, Ltd.) *Note: The measurement of particle size distribution was outsourced to an external organization.* **Test Results** When glass fragments of standard microscope slide glass crushed to about 3.5mm were pulverized using the automatic mortar (Ishikawa-type stirring grinder) AGB, the particle size saturated in about 3 hours. The particle size was approximately 1.7μm. Therefore, it is possible to crush glass to a particle size of about 1.7μm using the AGB type.

Using our "Soba Machine No. 2," we will introduce how to make delicious handmade soba. ■ How to make delicious handmade soba 1. Mix soba flour and the binder (for 100% soba, use only soba flour). 2. Put the soba flour and binder into Soba Machine No. 2. 3. Start the Soba Machine No. 2. 4. Slowly add the specified amount of water while sprinkling it for about 1 minute (use the amount typically used in traditional hand-making). 5. Knead for about 3 minutes in that state. 6. Stop the machine when the soba has not completely formed into one mass, but has come together in about 5 pieces. 7. Remove the soba dough from the machine. 8. Use a bowl to gather it into one piece. 9. Transfer it from the bowl to a board and sprinkle with flour. 10. Using the palm of your hand (near the wrist), change the angle to stretch it out from the center to the outside to make it round. 11. Sprinkle with flour and roll it out with a stick. 12. Once stretched into a square, fold it. 13. Cut using a small cutting board and a soba knife. 14. Boil in a large pot, and the soba is complete.

- Title: Materials Technology for Lithium-Ion Batteries and All-Solid-State Batteries: From Processes to Evaluation Techniques - Editor: Yoji Sakurai (Toyohashi University of Technology) - Co-authors: Ryoji Inada (Toyohashi University of Technology) Yuto Tojo (Shizuoka Institute of Science and Technology) Kazuhiro Hikima (Toyohashi University of Technology) Atsunori Matsuda (Toyohashi University of Technology) Hiroyuki Muto (Toyohashi University of Technology) - Publisher: Science Information Publishing Co., Ltd. URL: https://www.it-book.co.jp/books/124.html ■ Utilization of Our Equipment (AGA) in the Book When investigating the electrochemical properties of a certain electrode active material as a lithium-ion battery, it is necessary to prepare the electrode active material according to the measurement requirements. To ensure the overall electronic conductivity of the electrode and the uniformity of the electrochemical reactions, a conductive additive will be used to create a composite electrode in the future. It is mentioned that our grinding machine (AGA) may be used for this mixing process.

**Introduction to the Paper** Title: Mechanochemical Reactions of Hydrated Crystals Author: Professor Yasuo Arai Summary: The paper titled "Mechanochemical Reactions of Hydrated Crystals" was published in 1971 and provides valuable research findings related to gypsum and lime. This paper was written by Professor Yasuo Arai. The focus of this paper is on the characteristics and mechanisms of mechanochemical reactions in hydrated crystals. Professor Arai conducted a detailed study of the processes by which hydrated crystals, such as gypsum and lime, change under physical stimuli. As a result, he revealed that changes in crystal structure and recrystallization of materials occur during the mechanochemical reactions of hydrated crystals. The equipment used to apply this "physical stimulus" is our company's AGA. The significance of this paper contributes to understanding how mechanochemical reactions of hydrated crystals affect the applications of gypsum and lime. Furthermore, this research suggests potential applications in fields such as materials science and architectural engineering. References: Arai, Yasuo. "Gypsum and Lime," 1971. "Mechanochemical Reactions of Hydrated Crystals."

**Summary** We investigated whether porcelain nanoparticles can be produced using a porcelain pestle in an Ishikawa-type stirring and grinding machine. It was found that extremely stable porcelain nanoparticles can be generated in water by stirring and grinding for several days in an aqueous solution. **Conclusion** On average, porcelain nanoparticles smaller than 200 nm were produced. The resulting milky solution was stable and dispersed, despite the absence of a dispersant.

**Summary** To understand the performance of the Ishikawa-type mixing and grinding machine produced at the Ishikawa factory, zeolite was used as the standard material to clarify the relationship between grinding time and particle size distribution through experiments. First, experiments were conducted using the D18S (desktop machine) to examine the relationship between the particle size distribution of zeolite and grinding time. The grinding times were varied at 15 minutes, 30 minutes, 1 hour, 2 hours, and 4 hours, with 2g samples taken at each interval. These samples were then analyzed for particle size distribution using a laser diffraction particle size measurement device. **Conclusion** In the particle size distribution, the peak value (mode) was 0.4μm for grinding times up to 1 hour. After 2 hours of grinding, it was 0.1μm. The standard deviation, which represents the variation in particle size, decreased with longer grinding times. However, beyond 2 hours, it saturated and remained almost constant at 3μm. From this, it can be concluded that within the experimental range, the relationship between the particle size distribution of zeolite and grinding time using the D18S shows that longer grinding times result in smaller particle size (mode) and less variation (standard deviation), but after 2 hours, it becomes constant.