Refractory fiber, also known as ceramic fiber, is a new type of fiber-shaped high-temperature resistant material. However, the mineral dust of many fibers can produce strong biochemical reactions with biological cells, which is not only harmful to human health, but also causes certain harm to the environment.
In recent years, people have attached great importance to the development of new fiber varieties, and introduced components such as Cao, Mgo, BZo3, and Zr02 into mineral fiber components. According to experimental proof, alkaline earth silicate fiber with Cao, Mgo, and Site02 as the main components is a soluble fiber. Bio-soluble refractory fiber has a certain solubility in human body fluids, reduces damage to human health, and can be used continuously at higher temperatures. Mineral fiber materials. In order to improve the heat resistance of soluble fiber, the method of introducing Zr02 components is adopted to improve the heat resistance of soluble fiber.
In the process of exploring bio-soluble ceramic fibers, many countries have their own patents on the composition of soluble ceramic fibers. Combining various patents of the United States and Germany on soluble ceramic fiber compositions, the following composition (by weight percentage) is featured:
①Si02 45-65% Mg0 0-20% Ca0 15-40% K2O+Na2O 0-6%
②Si02 30-40% A1203 16-25% Mg0 0-15% KZO+NazO 0-5% P205 0-0.8%
From the patents and the composition of various soluble fibers on the market, we know that the current soluble refractory fiber is a new type of refractory fiber. Its main components are very different from those of traditional fibers. Its main components are in the magnesium-calcium-silicon system, magnesium-silicon system and calcium-aluminum-silicon system.
Research on bio-degradable materials mainly focuses on two hot spots:
① Research on the bio-compatibility and bio-activity of biodegradable materials;
② Research on the degradation mechanism and metabolic process of biodegradable materials in the body.
Soluble ceramic fiber can replace some traditional ceramic fibers. The continuous use temperature of soluble ceramic fiber can reach 1260℃. It also has excellent thermal insulation performance and a wide safe use temperature range. If inhaled into the lungs, it can quickly dissolve in the lung fluid and is easily discharged from the lungs, that is, it has very low biological persistence.
Soluble ceramic fibers have been made into many shapes and are used in many high-temperature fields. Vacuum forming can make the fibers into various shapes including tubes, rings, composite molding combustion chambers, etc. To optimize the performance of the ceramic fibers in use, ceramic fiber products can be cut or not. Soluble ceramic fiber felts and fiber blocks have been used in many high-temperature fields, including ceramic kilns, iron and aluminum furnaces, etc. They can also be used in ethylene furnaces in the petrochemical industry, and have the same good use effect as traditional ceramic fibers.
Post time: Jul-29-2024
