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PEEK vs PPS: Which is the Better Insulating Material?

Insulating materials are essential for many applications that require thermal protection, electrical insulation, or mechanical stability. Among the various types of insulating materials, polyurethane (PUR) and polyisocyanurate (PIR) are widely used because of their excellent insulation properties, low thermal conductivity, and high strength. However, there are also other high-performance thermoplastics that can be used as insulating materials, such as polyether ether ketone (PEEK) and polyphenylene sulfide (PPS). In this article, we will compare PEEK and PPS based on their advantages and disadvantages, and help you decide which one is the better insulating material for your needs.

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PEEK: Pros and Cons

PEEK is a semicrystalline thermoplastic that has a high maximum operating temperature of 480°F, compared to 430°F for PPS . This means that PEEK can withstand higher temperatures without losing its mechanical properties or thermal stability. PEEK also has a higher tensile strength and impact resistance than PPS , which makes it more durable and resistant to cracking or breaking. PEEK is available in FDA-approved grades for medical applications , which means that it can be used for implants, surgical instruments, or other devices that require biocompatibility and sterilization.

However, PEEK also has some drawbacks that limit its use as an insulating material. One of them is its high cost, which is much higher than PPS . PEEK is also prone to hydrolysis in hot water or steam , which means that it can degrade or lose its properties when exposed to moisture or humidity. PEEK is also difficult to process and requires special equipment , which increases the complexity and cost of manufacturing.

PEEK turbine

PPS: Pros and Cons

PPS is another semicrystalline thermoplastic that has similar properties to PEEK, such as low friction, good wear resistance, good chemical resistance, and good dimensional stability. However, PPS has some advantages over PEEK that make it a more economical and versatile insulating material. One of them is its lower cost, which is substantially lower than PEEK . PPS also has better chemical resistance than PEEK, with no known solvents below 400°F . This means that PPS can resist corrosion or degradation by acids, bases, salts, or organic solvents. PPS also has better compressive strength than PEEK , which means that it can withstand higher pressures or loads without deformation.

However, PPS also has some limitations that prevent it from being the best insulating material for all applications. One of them is its lower maximum operating temperature than PEEK (430°F vs 480°F) . This means that PPS cannot be used for applications that require higher temperatures or thermal shock resistance. PPS also has a lower PV limit and strength than PEEK , which means that it cannot handle high speeds or friction as well as PEEK. PPS also has a lower elongation and impact resistance than PEEK , which means that it is more brittle and prone to cracking or breaking.

PEEK turbine

In conclusion, both PEEK and PPS are high-performance thermoplastics that can be used as insulating materials for various applications. However, they have different advantages and disadvantages that make them suitable for different needs and requirements. If you need an insulating material that can withstand high temperatures, high impacts, or high biocompatibility, then PEEK might be the better choice for you. However, if you need an insulating material that can resist chemicals, compression, or pigmentation, then PPS might be the better choice for you. Ultimately, the best insulating material depends on your specific design and application.

PEEK medical implants

We hope this article has helped you understand the differences between PEEK and PPS as insulating materials. If you have any questions or comments, please feel free to contact us. We would love to hear from you.

If you are interested in using polyurethane products or want to know more information, welcome to harass us. We'd love to be bothered by you and help you with your needs. Do you need a free quote or any questions or help with the material.

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