Zhejiang Daily News Using a new technology, industrial waste gas can be used to synthesize raw materials for lenses and optical fibers. The achievements made by scientists at Zhejiang University have not only provided valuable new ways for the treatment of sulfur-containing wastes in China's coal and oil refining industries, but also proposed a new method for the cheap preparation of sulfur-containing polymer materials. Related papers have been published in the famous journal Nature News.
Carbon oxysulfide is a kind of banned exhaust gas produced in coal, oil refining and chemical processes. It will seriously corrode equipment. When it is dissolved to high altitude, it will produce sulfur dioxide, which will cause acid rain and will be destroyed by photooxidation. At present, relevant industries are desulfurizing before discharge, and how to further effectively treat these removed sulfur-containing substances is a difficult problem. Professor Zhang Xinghong from the Polymer Science Department of Zhejiang University proposed the technology of recycling carbon oxysulfide to polymer materials for the first time, which is of great significance to China.
In the laboratory of Zhang Xinghong's research group, the reporter saw that carbon oxysulfide and epoxy compounds (a common, cheap chemical raw material) and catalysts were placed together in an autoclave, and the two could be polymerized into a non-toxic, non-toxic A new, transparent substance. "The sulphur-containing polymer material thus obtained is half of the weight derived from carbon oxysulfide and has high recycling efficiency." Zhang Xinghong said, "The obtained materials have high refractive index and Abbe number and are ideal optical resins."
The refractive index and Abbe number are two indicators that we usually encounter in optical shops. The same degree, the lens with high refractive index is light and thin, and will not become "beer bottom". Aberdeen lenses have a more accurate reflection of the world's colors. Zhang Xinghong said that the optical resin synthesized from sulfur-containing exhaust gas has good processing performance and can be easily used to manufacture lenses and optical fibers.
Turning waste into treasure, the catalyst plays a key role. Finding the right catalyst is a huge challenge, and Zhang Xinghong's team is fortunate to be inspired by an enzyme in our body.
Zinc carbite has been widely used in the early life of the earth, and it plays an important role in regulating the body's acidity and alkalinity and maintaining life. In nature, carbonic acid zincase can capture carbon oxysulfide and convert it to hydrogen sulfide, which is one of the main sources of animal and plant decay odor. Zhang Xinghong team deeply studied the mechanism of carbonic acid zinc enzyme to activate carbon oxysulfide efficiently, and based on its function and structure, finally found a non-metallic catalyst and successfully converted carbon oxysulfide into a useful material.
The new catalytic system is simple, inexpensive, and has good effects. In particular, the catalyst does not contain metal, so that the obtained sulfur-containing polymer exhibits an original colorless and transparent quality. "At present, the preparation of sulfur-containing polymers is made of highly toxic phosgene and mercaptan, which are difficult to store and transport. The new method proposed by us has brought about a breakthrough in exploring non-phosgene routes." Zhang Xinghong said that the industry of this research results Promising prospects.
"Zhejiang Daily", June 21, 2018, 10th edition
Buzzer with Speaker for Alarm System Appliance, This is used for audio, video, radio, automotive, motocycle, bus, bike, truck .
1) Professional wire harness manufacturer for home appliance, Electronic, industrial control, medical and so on. We have good business with some top 500 future company, like Lenovo, Huawei, HP, Eaton, etc.
2) Our wire complies with UL/CE certification; all comply with above ROHS 2.0. Support customer especially request like no red phosphorus. Our company has got ISO2000 certificates.
3) We accept OEM/ODM design, welcome any customized cable too, whenever you have 500pcs or 100K pcs demand, we will reply you quickly and quote you best prices if we can support.
4) Strict quality control, Passed TS Quality control system, All the products are 100% test before delivery.
Wiring Harness Kit,Electronic Buzzer Automatic Wire Harness,Buzzer Automatic Wire Harness,Buzzer Wire Harness
Dongguan YAC Electric Co,. LTD. , https://www.yacentercn.com