Experiment § Quick drying moisture-cured adhesive
Many industries will require an adhesive that can harden quickly after dispensing, due to limited production capacity and storage space. UV resin hardens quickly after being exposed, but the material needs to be photo-permeable; epoxy resin has a 5-minute hardening system, but it needs to be mixed; instant glue is an option, but the material is harder and more brittle. Moisture-cured silicone or MS resin is also a good choice since it has a quick reaction. According to this development objective approach, we can choose resins with many bases of terminal hydrolyzed function, which are easy to hydrolyze to achieve a rapid hardening effect. Various resins are matched with each other to obtain the best colloidal substance. At present, we have used tin-catalysts to develop the FS1443 series of products, which have fast surface drying characteristics. Simultaneously, in response to the environmental issues of tin catalysts, which gradually disappear from the market, we have also developed non-tin catalysts FS132BL15. These materials can be surface-dried in 3 minutes and will not flow freely; after 1 hour, they have initial strength and can be moved to the next process. According to the cross-sectional observation of the tension shear test: the initial strength of the glue 1 hour after bonding is 4kg/cm2, and the adhesive and the substrate will delaminate (Adhesive Failure, Figure 1). As the resting time increases, the reaction rate also increases. After five days, the strength is 34 kg/cm2, showing adhesive fracture, the characteristics of good bonding (Cohesive Failure, Figure 2).
─ Author: Mr. Zhe-yong Lin
Activity § CSR action on Dougong 2nd road
Last month, the Industrial Zone Management Center visited Everwide, hoping that we would adopt the long narrow CSR greenbelt on Dougong 2nd Road and donate money for trimming grass. After we adopt, we decided to go beyond trimming grass and tidy up this greenbelt. For the first time, we asked eight colleagues to pick up rubbish before getting off work, and it took about 1/8 of the total road length in an hour. This section connects the gateway of the industrial zone, so there is the greatest amount of garbage, and the effect is the most apparent (Figure 1-3). A few days later, some new garbage was thrown away. The colleagues said: "This is a battle! We will never lose from the bad habit of littering!" On Sunday, we took the time to organize it again (Figure 4). Many foreign visitors come to visit us in Douliu Industrial Zone. If they see rubbish along the road and the entire industrial area like an illegal underground factory, how can they believe that we can make good products? From this perspective, the garbage problem cannot be ignored; caring for the homeland cannot be just a slogan. We must continue to work hard; we must act together, determined to make the environment better!
Knowledge § What is the plastic ABC
A means Alloy, which means copolymerization. Many polymers are homopolymers. Polymers are generated from the same monomer's polymerization, and copolymers are polymers where a molecular chain is composed of two or more monomers. B means Blend. Mixing two or more polymers, without chemical bonds between these different polymer chains, is called blending. C means Composite. This material must be composed of a base material (Matrix) and a reinforcement material (Reinforcement). The former may be a polymer, and the latter may be a fiber.
Living § "Teacher, Will You Come Back?" movie appreciation
Everwide is located in Douliu City, Yunlin County, is a small town in central Taiwan. Many people have never heard of this place name. When I went to graduate school in Beijing, a classmate asked me, "Yunlin Douliu? Where is that?" From many friends' reactions, I know I live in the countryside. When I graduated and returned to work in my hometown, many people asked me: Why not go to work in Taipei? The movie "Teacher, will you come back?" also discussed similar topics. The dean was impressed by the movie's content, so he organized an event to watch two movies and invited everyone to enjoy it with the teachers and classmates from Municipal Shiliuguomin Junior High School and Elementary School. When the leading role in the story was serving as an intern teacher, he saw that the school environment on the mountain fell behind, and the resources were scarce, and he desperately applied for a transfer to a school in the city. After returning to the school after the 921 Earthquake in 1999, seeing all the devastation, the student cried helplessly and asked him, "Teacher, will you come back?" So he made up his mind to stay in the original school and serve. This movie tells us: the purpose of education is to use knowledge to help people, no matter where they are, as long as they work hard, all will have contributions. This feeling is the same as my original belief in returning hometown. Although my power is very small, we can still make a difference as long as we are willing to give.
─ Author: Mr. Cheng Yuxiang
