Everwide newsletter No.452

skill484
May 12
3 min read

Experiment § Adhesion Solutions for Bonding Nylon to Metal

Nylon has a high moisture absorption rate and must be dried before processing. However, drying can cause deformation, which is troublesome for users. If not properly dried, bonding strength with high-temperature adhesives drops significantly. As a crystalline material, nylon is also harder to bond, often requiring a primer to improve adhesion. We recently developed

a new primer and adhesive system that delivers strong bonding performance without pre-drying the nylon (Figure 1). This solution has been tested in composite high-pressure gas cylinders, bonding metal valves to nylon composite liners. Adhesive bonding offers a reliable alternative to traditional high-temperature welding or overmolding (Figures 2 & 3). Everwide Chemical now promotes this nylon-to-metal bonding solution, featuring easy handling and excellent heat resistance, while reducing the need for drying during processing. Feel free to contact us for more information. — Author： Mr. Chih-Hsien Chen

Activity § Although we're not a local company, our name is still remembered

In April, we participated in major trade shows including Electronica China in Shanghai, the Indonesia International Electronics & Components Expo, and the Taipei International Automotive Electronics Show. The events were large, crowded, and full of enthusiastic exchanges—quite different from what we usually see in Taiwan. What surprised us most was the number of distributors who approached us proactively, saying they were already familiar with our brand thanks to our strong quality and customization capabilities. Although we don’t have overseas factories and aren't the lowest price, we rely on consistent quality, professional service, and years of earned trust. We’ll keep listening to the market and improving our products and services, and we hope to be recognized by more quality-focused customers.

( Figures 1–4)

Knowledge § Theoretical vs. Actual Strength of Polymers (2)

When a material fails, both strength and energy must be considered. For thermosets, fracture requires breaking covalent bonds, so fracture energy is bond-dominated. For thermoplastics, failure often occurs through chain slippage without breaking most bonds, so intermolecular forces are more important. Theoretical fracture strength is much higher than actual strength—materials are only about 1/5 to 1/10 of the theoretical value due to defects. On the other hand, theoretical fracture energy (based on bond breaking) is much lower than actual energy, as plastic deformation absorbs far more energy, often hundreds of times more.

Living § Everwdie FUN Magic – Science Train to the Southern

On February 21, 2025, the "Southern Border – Dawn Science Train" arrived at Jinlun Station in Taitung. Everwide set up two exciting interactive booths for the event. The first booth, titled "Everwide FUN Magic – Let’s See Through You", introduced the concept of light polarization. To help children observe material stress, we brought a laboratory stress tester to the site. By placing a plastic ruler between two polarizing filters, students could observe the photoelastic effect—birefringence, causing colorful stress patterns in the material. The second booth, led by Dr. Yeh Cheng-Yang from our company, showcased rocket ablation materials, simulating how these materials protect spacecraft during launch. The demonstration helped participants understand the applications and challenges of aerospace technology. We deeply appreciate the support of our colleagues and the enthusiastic assistance of Principal Su Yi-Yuan of Chishang Junior High School. Thanks to their efforts, students from Taitung Senior High School, Taitung Girls’ High School, and Yujen High School could join. The event incorporated STEAM-based interactive learning, guiding students in hands-on experiments and sparking their interest in science. The event also received strong support from local leaders, including Pingtung County Magistrate Chou Chun-Mi and Taitung County Magistrate Rao Ching-Ling. Distinguished guests such as Ms. Sophie Chang of the TSMC Foundation and Director General Wu Tsung-Hsin of the National Space Organization also attended. This initiative aimed to bring scientific resources from western Taiwan to the east. We’re honored to have been part of this love- and knowledge-filled journey, spreading the beauty of science and the spirit of giving. — Author： Ms. Lin Miao-Ling