The temperature resistance of teal fiberglass boards will gradually decline as service time increases. This is determined by the material properties and aging rules of the substrate. The specific change mechanisms and influencing factors are as follows:
Core Causes of Aging
The substrate of teal fiberglass boards is a composite material of epoxy resin and glass fiber. As a polymer, epoxy resin undergoes thermal-oxidative aging under the long-term continuous effect of environmental factors such as temperature, humidity and oxygen:
- High-temperature environments will accelerate the breakage of epoxy resin molecular chains and reduce the bonding strength between the resin and glass fibers;
- In humid environments, moisture will penetrate into the interior of the board, damage the interface bonding between fibers and resin, and further accelerate the aging process.
This aging process is irreversible and will eventually lead to a gradual reduction in the maximum temperature resistance of the board.