Yongkuan Chemical Newsletter-Issue 321
Release Date: 2020-03-30
experimental report § MS adhesive used for rubber bonding
Due to the low surface tension, low polarity and high flexibility of rubber itself, high-polarity epoxy resin, UV glue or general MS adhesives are not very good for its adhesion. Recently, we have developed MS adhesives for rubber. The goal is that no primer is required, no foul smell, and no harm to the substrate. Figure 1 shows the situation where the developed product FS200BL and the conventional product FS115BL3 are glued together and then torn apart by hand: FS200BL is in mixed failure mode, and the latter is subsequently invalidated. Figure 2 is another FM115W1 developed product and conventional products to EPDM. The developed product is obviously cohesively damaged, and there is residual glue on both sides; FS115W1 is the subsequent failure, and one side is degummed. The developed products that adhere to SBR also have good results (Figure 3, SBR has been cleaned by MEK). The current formula is used for rubber-to-rubber adhesion, and it can often be glued on both sides, but the adhesion between rubber and plastic is not good enough (Figure 4). The possible reason is that during the peeling force of plastic and rubber, the plastic material will not be deformed, and the colloid has a strong adhesion to the plastic. Therefore, the maximum force is the interface between the rubber substrate and the MS colloid, which makes the MS colloid It tends to peel off from the rubber surface. We will continue to improve the adhesion of plastic and rubber materials.
─ Author: Mr. Cheng YuxiangAbout Yongkuan § Anti-epidemic action
In order to prevent new coronavirus infection, we have relevant measures: visitors, manufacturers and couriers need to monitor body temperature and wear masks to ensure that everyone can work in a safe environment (Figure 1). Every morning, all colleagues must measure the body temperature and record it to facilitate retrospection (Figure 2). If an abnormal condition is found, medical treatment will be required as soon as possible. During this period, it is very important to wear a mask and wash your hands correctly, so we set up dry-cleaning hand lotion at the manufacturing site, punching point and shipping area, etc., to provide colleagues and visitors to use; also put the correct washing method on each washing station and watch the seven types of hand washing Please click on the link (Figure 3). In order to remind colleagues of the importance of epidemic prevention, the latest epidemic prevention information and announcement broadcasts are conducted twice a week. Please try to avoid gathering and activities in confined spaces, washing hands, wearing masks and maintaining hygiene. If you feel unwell, please consult a doctor immediately. I would like to thank the medical staff who have always been at the forefront of epidemic prevention, just to let the patients regain their health as soon as possible and smile again, you have worked hard.
Knowledge exchange § Can MS resin be resistant to organic solvents?
Most MS resins and organic solvents (such as MEK, n-Hexane or Toluene) will swell significantly after prolonged contact, causing serious deterioration of MS colloids, so avoid using MS resins in this environment. Then again, brief contact, such as cleaning or wiping, has little effect on the cured MS resin.
Biweekly strike § Meow Star Character Language
More and more families keep pets now, treat them as if they were their own family, take good care of them, and even call them Mao children. The opportunity to raise cats was when I was still working in Hsinchu, in order to resolve a person's distress, and opened this "no return". Cats have their own personalities, but they also capture the hearts of many people. They often perform behaviors that are difficult to understand, so they are known as cats. Although they are very independent animals, they only need to provide enough water and food, and regularly clean up the cat litter to live well, but in addition to these basic physiological needs, their psychological needs can not be ignored, the owner’s care and Interaction is very important, even if you are busy, you need to spend time with you, otherwise you may get depression! There are many cute things about cats: they usually can’t be called, and they don’t care how they call them, but if they observe the tail carefully, if they swing, it means that they know you call it, but it is too lazy to care about you , This is clearly the proud personality! Winter is the happiest moment for cat owners, because they stick to their owners to keep warm all the time. Of course, there are also disturbing aspects of keeping cats, such as: cat hair floating in the air at any time at home, claw marks appearing in new furniture soon, objects on the table often appear on the ground, running crazy in the middle of the night and knocking things down...etc. Sometimes it's really irritating, but whenever I see the cute look of them sleeping, I think it's worth it!
─ Author: Mr. Chen Yonglong