The US Team Made New Types Of Glass With Zinc And Organic Compounds, With Higher Flexibility.

The US Team Made New Types Of Glass With Zinc And Organic Compounds, With Higher Flexibility.

Mar 16, 2018

 Quartz glass is traditionally made from silica (SiO2), and also brought by industrialization made of boron, polymer and metal materials such as various types of glass, the recent foreign team developed a new type of glass "made of metal and organic compounds ZIF-62, this new material not only better than the old type more easily formed glass at the same time, also has higher flexibility.

 Besides the difference in composition of atoms, the tetrahedron structure of ZIF-62 and SiO2 glass is approximately the same. The central zinc (zinc) atoms are surrounded by two organic compounds. The two organic compounds are imidazolate and benzimidazolate respectively.

  No matter what type of glass, in order to maintain a smooth surface, the production process is very careful to maintain a balance, most materials must be cooled rapidly in heating to melt, can appear amorphous (Amorphous) form, and this material is formed in the glass annealing when the ability is called "glass forming ability" (glass-forming ability GFA).

  The team found that in the course of the study, with more benzimidazolate added, the glass forming ability is better, so far, is known to have composed of silica glass glass forming ability, but the team believes that ZIF-62 will rewrite the record, it has more than 50 kinds of glass types available, even more flexible than silicon glass.

  In spite of this, there are still some problems to be solved in ZIF-62. The process of making glass has benefited from thousands of years of improvement, and ZIF-62 is still in the early stages of the study and can't compete with it.


  In order to make this new type of glass, the team must first synthesis of organic compounds, then with aqueous zinc nitrate (hydrous zinc nitrate) and mixed solvent, and then heated to about 800 degrees F (427 degrees C) and maintain for a period of time can be completely melted, but when the temperature reaches 980 degrees F (527 degrees C) when it will start to evaporate.

  The team has used spectroscopy and X ray to observe some material characteristics, and also measured the optical and mechanical properties of ZIF-62. Some tests were completed in New York Corelle (Corning), but there is still much to be learned.



  Study co-author John C. Mauro said that this material of glass is very novel, though they have determined the glass forming ability and ability, but we still do not fully understand all of its material properties, we also need to study how the production process is suitable for mass production.

  The team expects to continue to study other formulations of PMMA, including potential cobalt based glass (cobalt-based), which has been published in the Science Advances journal.