Experiment § Invisible devotion- Running track Adhesive
Currently, there are several types of running track, red brick powder, synthetic rubber, and PU tracks (Figure 1). Take the PU track as an example. The main component of the adhesive contains MDI (xylene methane diisocyanate) or TDI (toluene diisocyanate). If non, other components may be irritating or toxic and will create impairment in construction and the environment. Recently, our company has developed a special adhesive for track paving. Similar to the other’s adhesives on the market, our products also carry MDI or TDI, but oligomers are applied to lessen the toxicity. Also, the adhesives on the market will add solvents to improve the operability. But our product uses low volatility and low irritation components to reduce the harm caused by solvents. In addition, we use the RCI drying time recorder to conduct the examination, and the drying time can be less than 8 hours (Figure 2, 3). Then, using the universal testing machine plus the adhesive on the market to do the adhesion examination. This product can make the substrate a larger fracture (Figure 4, 5). Welcome to contact us if you are interested.
─Author Mr. Yi-Rong-Zou
Activity § Visiting Douliu Junior High School
For the first time, Douliu Junior High School has collaborated with us to organize "practical" and "experience" ventures in order to expand a student's social vision. Besides understanding product applications, sharing simple chemical principles, and participating in practical activities of glue materials were also implied. The students said: "I have benefited a lot from this activity, now I know that resin is ubiquitous in our life." Hoping in the future, we can still do our best to give back to society!
Knowledge § Why does dealcoholized silicone's reactivity will get worse the longer it put?
Moisture- Curing Silicone will react with moisture in the air to release small molecular volatiles and then proceeding to a curing reaction. Different types of Silicone release different small molecules, such as methyl ethyl ketoxime, acetic acid, acetone, etc., which have no effect on the performance of Silicone. The Dealcoholized Silicone will slowly react with the organometallic catalyst and release the by-product methanol due to the residual moisture in the filler or the moisture of the outside, etc., Methanol will produce low-molecular-weight silicone compounds with silicone, which will affect the cross-linking properties of the resin. These reactions will grow as the storage time increase, which will slow down the curing speed of dealcoholized Silicone, decrease the mechanical strength and adhesive force, then lose the original characteristics.
Living § First time farmer
The pace of city life is fleeting, and I want to experience a different lifestyle, so I signed up for Hualien volunteers for 4 days and 3 nights. Utilize your entire body's sensations to explore nature and try the lifestyle of local tribes. Our destination is the "water terraces" in Fengbin Township, Hualien. Attached to the water terraces, there are continuous sea erosion platforms and steep rocks near the sea. "Water terraces" are the land replanted by the Ami port tribes. Because the coast is terraced, machine farming was unavailable. Human-power is required from planting, weeding to harvesting. In here, they use natural agriculture, no pesticides and herbicides are used, also plants plus snails must be removed manually. Our first task is to remove tons of plants. When we got into the field, someone’s feet were immediately sunk in the soil, causing them to fall down because of their unbalancing. The whole body was covered in mud, and everyone chuckled. Every step we take, we have to bend down to cut the weeds. The weeding process needs to be cautious, because the weeds look like straws, so we had to be careful not to cut the wrong weeds. Volunteers work continuously under the sun, and some of the team members quit because of heatstroke. I can't imagine that farmers work like this every day. It is really tough work. It also makes me sincerely thankful for and admires the farmers for their hard work! This is the first time I have been in such an intimate connection with the soil, I deeply understand the truth of "Each and every grain of rice is the fruit of the toiling farmers"
─Author by Ms. Yu-Ru, Fan
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