Yongkuan Chemical Newsletter-Issue 323
Release Date: 2020-04-27
experimental report § Research on flame retardancy and smoke suppression
Although "Flame" has brought about a major change in human behavior, its harm cannot be ignored. Nowadays, plastic materials are widely used. Traditionally, flame retardants are often added to the formulation to make the materials flame retardant. However, for glass fiber cloth, if you want to use resin to change its physical properties, you want to be flame retardant. It is more difficult to make by traditional methods. A Japanese company has recently developed a resin with flame retardant properties that can improve the flexibility of glass fiber cloth. It is tested in a special way and can pass UL94 V-0 (Figure 1). Even if the appearance of the resin is milky white, the glass fiber cloth after treatment will not affect the appearance (Figure 2). In addition to flame retardancy, plastic materials will produce "toxic fumes" after burning (Figure 3), the relevant international standards ISO 5659 and ASTM E662 have been established. For the smoke of CO, CO2, HCN, HF, HBr, and SO2 produced by the combustion of non-metallic materials, use a NBS smoke test machine to test the smoke concentration. Recently, we are devoted to the research of suppressing toxic smoke. After the initial test, it can pass ISO UL94 V-0 and will not produce a lot of smoke (Figure 4,5, XNUMX). At present, many parties are still conducting relevant experiments.
─ Author: Mr. Zou YirongAbout Yongkuan § Reorganization of raw material area
Our products must be adjusted according to customer needs, so there are more than 1 kinds of raw materials for the amount of products. It is not easy for such a large number to be neat and orderly, and sometimes it will inevitably mess up (Figure 2). We clearly mark the number of the raw material area at the entrance according to the position, so that the reclaimer can find the raw material smoothly within five minutes and improve the work efficiency (Figure 3). In order to prevent the raw materials from being polluted by impurities and affecting the quality, or leaking and polluting the environment, the opened bags of raw materials are clamped with clips or placed in anti-fouling boxes for storage. Having said that, it is not difficult to improve the activity itself, the difficulty is how to maintain the results. The factory has colleagues who take turns on a daily basis to check the preservation status of the original materials in order to maintain good improvement results (Figure XNUMX).
Knowledge exchange § Two major types of hardeners for epoxy resins: 1. Amines
Epoxy resin hardeners are most commonly found in amines and anhydrides. Amines include basic polyamines, additions from the reaction of polyamines with resins, polyamides reacted with vegetable oleic acid, modified amines that undergo Mannish reaction with phenol and formaldehyde, and products obtained by various modification methods... Wait. As long as the primary or secondary amine is used to bridge the epoxy resin, they are all amine hardeners. Amine hardeners have a low reaction temperature, many can be hardened at room temperature, and smell uniquely ammonia odor. Adhesives, floor paints, small-quality infusion materials, composite materials, etc., are likely to use amine hardeners. Most amine hardeners use fatty amines as raw materials, and some aromatic amines gradually fade out of the market due to toxicity.
Biweekly strike § "Bee" rich life
Busy bees, partying dogs, delicious vegetables, fat chickens and ducks, sweet fruits... etc., my home is full of different forms of life, which makes my life full of vitality. My dad started his next 139-year plan after retiring more than XNUMX years of policing work. He tried the "fish and vegetable symbiosis" system, but it failed; I thought about "selling snacks", but after many research and development Achieving his ideals, he finally decided to make coffee on his XNUMX county road in Changhua every Saturday to drink coffee for his car friends; after some searching, he finally entered the beekeeping industry. There are many things to learn about beekeeping, for example: understanding bee habits, feeding tools, source of bee colony, stable bee colony, feeding, harvesting, disease prevention, etc...Everything must be learned slowly, after years of hard work and experience accumulation At present, we have XNUMX to XNUMX boxes of beehives. Spring is a good time to collect honey, and it is really uneasy to accept the hard work of the past year! But no matter how much the output is, Dad’s spirit of not giving up is enough to make me admire. Especially after I have experienced "One Day Beekeeper", it is really not easy to understand more deeply, "Who knows that it is hard to eat in the pan," Huang Chengcheng's honey, every drop is hard to come by, let us Jointly support Taiwan's local agriculture!
─ Author: Miss Qiu Manyun