Typical service life by category
- General-grade heat-resistant plastics: Products made of PP (polypropylene) typically have a service life of 2–5 years; food-grade compliant products can last over 3 years in environments without frequent exposure to extreme heat.
- Industrial-grade heat-resistant plastic products: Standard heat-resistant plastic barrels have a lifespan of 2–5 years under normal storage conditions; outdoor heat-resistant plastic water tanks formulated with UV resistance can last 8–12 years.
- Specialty engineering heat-resistant plastics: PSF (polyarylethersulfone) maintains a stable service life of at least 12 years in 145°C steam environments; high-performance materials like PPS and PEEK can remain stable for 5–10 years under typical industrial operating conditions of around 200°C.
- Extreme-temperature resistant materials (e.g., polyimide): In controlled high-temperature environments such as aerospace applications, these materials can provide stable service for over a decade and withstand short-term thermal shocks exceeding 400°C.
Key factors affecting service life
- Long-term exposure to temperatures exceeding the material's limit, or frequent contact with strong acids, alkalis, or strong oxidizing agents, significantly accelerates material aging, potentially reducing the service life to one-third or less of the original duration.
- Low-quality heat-resistant plastic products made from recycled materials exhibit poor toughness and thermal stability, resulting in a service life far shorter than that of products made from virgin resin.