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Everwide newsletter No.445

skill484

Experiment § Thermal curing PC scratch-resistant coating

Virtual Reality (VR) uses computer simulations to generate three-dimensional virtual spaces, providing an immersive experience for the visual senses. Through posture tracking and 3D displays, users can feel a sense of presence. The lenses of VR glasses are made from

acrylic sheets with a coating, and the adhesive layer uses Everwide GM833 series, a 100% UV solvent-free cured material (Figures 1-3). UV acrylic resins feature optical properties such as high light transmittance, low yellowing, and durability and are irradiated with LED 365 nm wavelength UV light. The advantage of this process is its fast curing time, which increases production efficiency. After curing, GM833 provides excellent adhesion strength between the acrylic and the coating, without causing defects like white haze from damaging the coating layer (Figure 4). With a transmittance rate exceeding 95%, its solid refractive index is close to that of acrylic, at 1.491. VR glasses made with this material ensure clear and stable visuals, offering comfort to the eyes when consumers wear them to view images. This UV curing process enables solvent-free application, meeting the need for visual clarity while adhering to environmental standards. If you have any questions or requirements regarding related products, don't hesitate to get in touch with us. ─ Author: Ms. Chun-Hsiang Li

 

Activity § Taiwan International Assembly of Space Science, Technology, and Industry

Taiwan currently can manufacture its satellites, but still relies on foreign rockets for launch. Therefore, Taiwan is actively investing in the research and development of domestically produced rockets. Everwide participated in the 2nd TASTI, which covered rockets, satellites, and ground communications, with experts from different fields sharing their insights. Our presentation, in collaboration with TASA, focused on ablation materials. These materials are primarily used to protect rocket engine combustion chambers, ensuring the safe launch of rockets and contributing to the advancement of space development (Figures 1-5).

 

Knowledge § What is Liquid Metal?

Most metals are high-melting-point solids, with mercury being the most notable example of a metal in liquid form. Recently, gallium and its related alloys have gained significant attention. Liquid metals can be tailored to have melting points between 10–60°C by adjusting their composition to suit various environments. They exhibit excellent thermal conductivity, with a thermal conductivity as high as 70 W/mK, and have been studied as a potential replacement for thermal paste in computer cooling systems. Liquid metals also possess good electrical conductivity and have been researched for use in flexible circuit boards. However, they can damage electronic components if they come into contact with areas requiring insulation. Additionally, when liquid metals come into contact with conventional metals, they may form alloys, leading to corrosion of the latter—a factor that requires careful consideration.

 

Living § Reservist training

The government has begun to reserve alternative military personnel to assist in disaster prevention and relief work. I was fortunate to be selected to participate in the Chiayi ire Department's inaugural "Alternative Military Service Reserve Training Assembly."On the first day, I reunited with former middle and high school classmates at the training site, making it feel like a gathering. As the course began, the fire department instructors explained the organizational arrangements for the training. Since implementing the alternative military service system in 2000, nearly 300,000 servicemen nationwide have retired and transitioned to reserve status. After retirement, they are managed by the local township office based on their registered domicile. They are categorized into public security maintenance, disaster prevention and rescue, social services, and public services. I was assigned to the disaster prevention and rescue group. The two-day training program was led by experienced instructors who shared years of first-aid expertise and taught us practical rescue skills, including wound dressing, applying tourniquets for bleeding control, and performing CPR and AED operations. Practical exercises mainly focus on post-disaster scenario simulations. Under the guidance of command personnel, we constructed a tic-tac-toe support structure using wooden planks and successfully utilized levers to extract a dummy victim from a collapsed area. We also learned about preventing hazardous chemical fires, which is relevant to my current work. This training assembly was highly beneficial, giving me a deep understanding that many skills can only be effectively applied in disaster situations through rigorous training and teamwork. ─Author: Mr. Shih,Yao-Wei


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