The core selling point of AES alkaline‑earth silicate fiber lies in its biosoluble characteristic, which distinguishes it from ordinary refractory ceramic fiber. Many customers want to understand the material principle behind this safety performance.Traditional RCF ceramic fiber is alumina‑silicate system. Its chemical structure is stable inside human body fluid. Once fine fiber dust is inhaled and deposited in lung tissue, it is difficult to decompose and discharge, resulting in long‑term potential risk. AES fiber adjusts formula system, introducing large amount of calcium oxide and magnesium oxide into silica‑based fiber. These alkaline‑earth oxides reconstruct fiber network structure.

Traditional RCF ceramic fiber is alumina‑silicate system. Its chemical structure is stable inside human body fluid. Once fine fiber dust is inhaled and deposited in lung tissue, it is difficult to decompose and discharge, resulting in long‑term potential risk. AES fiber adjusts formula system, introducing large amount of calcium oxide and magnesium oxide into silica‑based fiber. These alkaline‑earth oxides reconstruct fiber network structure.

When tiny AES fiber fragments enter body tissue, body fluid will trigger slow chemical corrosion on fiber skeleton. Fiber will gradually break down into soluble harmless components and be metabolized out of human body. Relevant laboratory inhalation test verifies its low biopersistence, helping AES fiber get Nota‑Q exemption classification under EU 97/69/EC directive.

It should be emphasized that “biosoluble” does not mean non‑irritant. AES fiber dust may still cause temporary mechanical irritation to skin, eyes and respiratory tract during construction. Standard personal protective equipment is still required during cutting, installation and handling processes. 

Biosoluble property mainly eliminates long‑term carcinogenic risk after long‑term dust exposure.