Recently, an advanced material named polysilazane has set off a wave of innovation in the industrial sector, becoming a key driving force for development in multiple fields with its remarkable properties.
Polysilazane is composed of elements such as silicon, nitrogen, and hydrogen, and is an inorganic - organic hybrid polymer material. The silicon - nitrogen bonds in its molecular structure exhibit extremely high chemical stability, while the organic groups endow it with excellent flexibility and adhesion. This "combination of rigidness and flexibility" enables it to remain stable in extreme environments, far surpassing traditional anti-corrosion materials.
In the field of new energy batteries, the metal shells of lithium batteries are prone to corrosion by electrolytes, posing safety risks. Polysilazane coatings can isolate the erosion of electrolytes and also possess insulation properties. Companies like CATL and BYD have already applied it in battery encapsulation technology.
The marine engineering and shipbuilding industries are also undergoing transformations. Offshore wind power equipment and ship components are constantly exposed to high-humidity and high-salt-fog environments. After a shipbuilding company in Qingdao adopted polysilazane coatings, the maintenance cycle of equipment was extended from 1 year to 5 years, with costs reduced by 60%.
The protection of high-temperature components in aerospace also relies on polysilazane. Components such as engine turbine blades and combustion chambers need to withstand high-temperature oxidation and gas corrosion. The high-temperature resistance of polysilazane makes it the new generation of protection solutions for NASA and Boeing.
In the field of chip packaging and precision electronics, polysilazane can serve as a passivation layer to prevent moisture and ion contamination from eroding microcircuits. Huawei and TSMC have already used it in the 5G chip packaging process.
In the past, the core technology of polysilazane was monopolized by US and Japanese companies. However, domestic enterprises have now achieved breakthroughs. The modified polysilazane developed by the Ningbo Institute of Materials Technology of the Chinese Academy of Sciences has reduced costs by 40% while matching the performance of top international products. A new materials company in Jiangsu has established an annual production line with a capacity of hundreds of tons, and its products are exported to Germany and South Korea.
With technological iteration and cost reduction, polysilazane is gradually penetrating into civilian fields. In the future, it may become as ubiquitous as plastic, completely changing the way humans combat corrosion environments.

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