Experiment § Load test of UV adhesive
(Figure 1) (Figure 2)
Light curing resin features:
Rapid response molding. The cured resin is tough and resistant to thermal shock (-20℃~80℃). Through the strict test of various environmental changes, the quality is extremely stable and reliable. Does not contain carcinogenic substances and volatile substances, the most secure. Good adhesion to glass and aluminum, stainless steel, alloys, and other metals. It is also very suitable for the adhesion of large-area glass table tops and metal table legs in the furniture industry.
Figure 1 shows an aluminum block with a cross-sectional area of 12.56 square centimeters, followed by a test on flat glass with a load of 20kg.
Figure 2 shows the test of an aluminum block with a cross-sectional area of 12.56 square centimeters, which was adhered to flat glass and a load of 150kg.
─Author: R&D Assistant Engineer Mrs. De-Zhong, Chen, Everwide Chemical
Character § Use professionalism and enthusiasm to create an eternal future (1)
Mrs. Ming-Xu, Li is a Ph.D. from the Institute of Chemical Engineering, National Tsing Hua University. Specialties: Epoxy Resins - Thermally Conductive Adhesives/Pastes. Affiliated laboratory: Lab-3. Motto: "In the field of chemical resins, there is only first and no second. I hope everyone can work together to be the first!"
【Continuous Revolution Theory】The photo on the left was taken on the eve of the Chinese New Year in 1989. In the photo, I am a sophomore student who bought a copy of Trotsky's Theory of Permanent Revolution. I have to admit, I never read its content, I just like the title, especially the word " Continuous ". At that time, I could be called " continuous truancy", "constant protest marches", "constantly making dissent", " continuous causing trouble", " continuous changing". Behind these "continuous", it records my youthful years and youthful enthusiasm.
【Perseverance and Pursuit of Excellence】For me, "constant" represents a state of learning, thinking, and introspection. Especially in this era of double-speed change, the stable and beautiful state no longer exists, and "continuous" will become a new criterion for examining the effectiveness of work. "Continuous research and development", "Continuous review process", "Continuous market development", "Continuous improvement of quality", "Continuous improvement of management", "Continuous creation of value", "Continuous quality growth", etc. They are the most specific content that constitutes a business.
[Advancing despite difficulties and accepting orders with joy] During the Lunar New Year in 1988, the boss of a construction company bowed and greeted the audience in a TV commercial. The images at the time made me feel kitsch and funny, so on New Year's Eve in 1989, I asked my classmates to help me take this photo of Blind imitation with ludicarous effects. More than ten years later, behind this happy photo, I have experienced many challenges and assumed many responsibilities. There will be more and more challenges and responsibilities that cannot be avoided. I am clear about this, without a doubt.
─Author: Dr. Ming-Xu, Li, Everwide Chemical
Knowledge § Mapping of Internal Stress in DSC
The figure on the left shows the DSC heating scan pattern after curing the light-cured epoxy resin. Curve A is measured after exposure to 6J/cm2. Curve B is the spectrum measured by exposure at 6J/cm2 and post-curing at 80°C/1hr. In the test piece of curve A, due to the residual internal stress, both the molecular chain moving to the outside (endothermic reaction) and the molecular chain arranging to the lowest potential energy (exothermic reaction) near Tg appear at the same time, so the Tg is not obvious. After the test piece of curve, B is post-cured and the internal stress is released, an obvious Tg can be found.
Living § Not "brain teaser" (2)
Question: Many large trucks and gravel trucks on the road will hang one of the wheels in the air when they are not loaded. Why?
Answer: To save money on fuel and tires? Of course, it is right for the driver, but for the manufacturers of heavy vehicles, the cost of this design is bound to increase, which is not good for them. In fact, the design of heavy trucks usually takes into account the condition of carrying cargo, but empty trucks are "exceptions". In other words, the empty car feels "floating" because it is too light and has insufficient friction, just like the road is covered with water and the steering wheel is difficult to control. Therefore, the purpose of tilting one of the rows of wheels is to increase the load on the other wheels, so that the friction force is higher, and the driver can control the vehicle more easily. Therefore, this design is a necessary safety design, not to save money. This also tells us that it is better to stay away from encountering heavy vehicles on the road because the handling of heavy vehicles is not as good as that of small vehicles.
—Author: Dr. Ye-Xu， Li， Everwide Chemical
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