Polysulfone (PSU) Pellet Storage Tank Selection

Storing Polysulfone? Start Here

If you're dealing with polysulfone, you're likely in the medical, food-processing, or aerospace industries. This high-performance thermoplastic is known for its durability and resistance to high temperatures, making it ideal for applications like medical hardware and hot-water plumbing. When storing polysulfone pellets, it's crucial to keep them dry to prevent defects in the final product. Let's explore how you can store this material effectively.

Can you store it in a poly tank?

No, polysulfone pellets should not be stored in polyethylene tanks. Instead, use stainless steel or aluminum for safe storage, especially if you're handling medical or food-grade materials.

Key Issue: Moisture Control

Polysulfone pellets are mildly hygroscopic, meaning they absorb moisture from the air. If not dried properly, this can lead to defects like surface haze and reduced molecular weight in your products. Ensure your storage system minimizes moisture exposure.

The safety that actually matters

• Use stainless steel or aluminum for storage to maintain material integrity.
• Ensure all gaskets are compatible—silicone for medical, EPDM for food and industrial use.
• Implement static-dissipative grounding to prevent dust-related hazards.

Common questions

Can polysulfone be stored outdoors?

Yes, but only in weather-protected silos made of stainless steel or FRP with static-dissipative resin.

What gasket materials are suitable?

Use USP Class VI silicone for medical applications and EPDM for food and industrial uses.

Why can't I use polyethylene tanks?

Polyethylene isn't suitable due to moisture absorption and potential contamination risks.