Everwide Newsletter No.324
Experiment report § Anti-sag PP adhesive
When a general acrylic adhesive is applied to a vertically standing PP sheet, the gel will flow down due to its low viscosity and low thixotropy (Figure 1, 2). The newly developed adhesive material KA003 is added with anti-sagging agent and toughening agent, which not only improves the anti-sagging property of the resin, but also increases the overall adhesive strength. For thermoplastic polyolefin (TPO), especially polypropylene sheet (PP) , Can have good adhesion (Figure 3). PP is not used under the condition of primer, followed by KA003, placed at room temperature to harden (Figure 4). The adhesive strength of the tensile mode showed that most of the sheets had whitening phenomenon, and the next position was not damaged, which proved that the adhesive strength of the adhesive was greater than the strength of the material itself (Figure 5, 6). KA003 does not need primer and is convenient to use, with an average strength of up to 43 Kgf/cm2. We are experimenting to apply the same type of glue to different materials, and you are welcome to contact us if you are interested.
─ Author: Miss Fan Shi YuAbout Yongkuan § Passing on Love
Many agricultural products from Taiwan are sold all over the world. However, due to the recent epidemic, exports have been blocked and sales have been affected. Therefore, in order to support Taiwan's agriculture, we purchased multiple boxes of guavas to share with our partners (Pictures 1, 2). On Mother's Day this year, we organized a group to buy goods hand-made by people with mental disabilities. Not only can we give gifts but also help others at the same time, adding a special meaning to this gift. With these exquisite potted plants, cute little flower baskets and practical rose pencils, it must be through repeated practice that they can make such beautiful works (pictures 3 and 4). For more information, Please click the link. Doing public welfare is a kind of love transmission. As the saying goes, "giving someone a rose, the hand has a lingering fragrance." It brings warmth to others and feels joy and happiness for yourself. It can also add extraordinary meaning and value to life.
Knowledge exchange § Two types of hardeners for epoxy resin: 2. Acid anhydrides strong>
Another type of hardener that is used in a larger amount is an acid anhydride hardener, which has a large ratio to resin, low viscosity, long usable time, slow reaction speed, and small reaction exotherm, requiring heating and hardening. The acid anhydride hardener can add a large amount of inorganic powder to reduce the shrinkage and stress of the hardened material, and is suitable for the infusion of motors and electrical products; the transparent and colorless formula is widely used in LED packaging. In addition to these two types of hardeners, amines and acid anhydrides, there are other types of hardeners: tertiary amines can make epoxy resin polymerize by itself; tertiary amines can make mercaptans react with epoxy resins, and can also make phenolic aldehydes. The resin reacts with the epoxy resin; the cationic initiator can also harden the epoxy resin by light or heat...etc.
Bi-weekly good ball § Good book sharing
In the days of Yongkuan internship, the company provided three good books for us to read. My favorite is "3 years from now, is your job still there?" I am deeply impressed by the effects of technological changes (Figure 1). "Mobile phone" is the most direct proof. In my childhood, it was just a machine that could talk on the phone and send text messages. In the middle of the country, its buttons disappeared and turned into touch devices! In a blink of an eye, mobile phones have evolved to have multiple functions such as internet, video, camera, measurement and entertainment. In addition to making life more convenient, they also bring each other closer. I once wondered why developers upgrade their phones to such a smart state? I also ask myself, if I am an engineer, do I have the ability to create more convenience for people? Regardless of whether it can be done or not, I hope I will go all out. When I was young, the teacher said to us: "Don't just stay in your hometown. The world is so big. Get out more and don't be a frog at the bottom of the well." This sentence is also common in the workplace. No one can guarantee that the professional knowledge we have now can be used for five, ten years, or a lifetime? So keep learning, look around, absorb new knowledge, and not be complacent with the frog in the bottom of the well. The journey of life is not the same mentality. Even if you encounter setbacks, you can still see brilliance after alteration. I hope that I will arrange my life properly and work hard to be worthy of this life. Finally, I would like to thank Yongkuan for learning a lot of new knowledge here, such as: knowledge of testing instruments, product packaging skills (Figures 2, 3), and a better understanding of the importance of responsibility and proactive problem solving, and the power of teamwork …Etc, these are valuable and practical practical experience. In the near future, I will formally enter my professional career and embark on another journey in life. Although the future is full of question marks, I still face new challenges without fear and joy! This great book is shared with you, and if you are interested, come and take a look!
─ Author: swim Miss Yu Min
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