Injection Molding with Ryton^®   PPS

Ryton^® PPS (Polyphenylene Sulfide) is an engineered, high-performance, moldable thermoplastic with exceptional characteristics and well-balanced properties that fit a wide range of applications. Ryton has high temperature resistance, chemical resistance, flowability and dimensional stability. Its chemical resistance is comparable to PEEK and fluoropolymers. It also is inherently flame retardant. These properties make Ryton an excellent choice for precision-molded components for applications in the electronics, automotive, aerospace, and chemical industries.

Ryton^® has highly stable chemical bonds and is a semi-crystalline material, giving it a high melting point of about 285° C (545° F). The high-temperature resistance of Ryton^® plastic gives this material long-term resistance to temperatures up to 200°C (392° F) and short-term resistance to temperatures up to 260°C (500°F).

Ryton^® plastic maintains dimensional stability at elevated temperatures and in harsh chemical environments. Its dimensional stability allows for molding of complex parts within tight tolerances.

Ryton^® PPS also has low water absorption and is chemically inert to common solvents below 200° C (392° F). This property makes Ryton^® stable in corrosive environments, and in applications involving both typical and alternative automotive fuels and associated petrochemicals.

The molecular structure of Ryton^® PPS polymer makes it flame retardant, causing at most, charring during combustion. Many other types of engineered plastics require additives to achieve a similar level of flame retardance, and to reach UL 94 V-0 classification.

Performance Plastics’ Expertise for Injection Molded Ryton^® PPS Parts

Polywel Plastics has developed specialized, patented technologies that lend us the ability to injection mold high-performance plastics such as Ryton^® PPS into complex parts that fit within tight tolerances.

We are a certified supplier for several resin manufacturers, sourcing the materials that will best suit our customers’ specifications in sufficient quantities to enable short lead times. Our materials sourcing and global relationships allow us to help match the resin to the application for optimal results.

Ryton^® PPS Rises to the Challenge

Ryton^® offers a balance of properties that make it especially useful for applications that require both chemical and heat resistance.

Ryton^®’s list of characteristics includes:

• Excellent hydrolytic stability

• High thermal stability (long- and short-term)

• Dimensional stability

• Chemical resistance

• Inherently self-extinguishing

• Precision molding to tight tolerances with high reproducibility

• High stress cracking resistance

• High modulus and creep resistance

• Resistant to high-pressure steam, fresh water, and salt water

• Meets UL94 V-0 requirements

Applications for Ryton^® PPS Utilization

Aerospace/Defense: Composite panels including hard points, thermal insulators, fasteners, bearings, and wear components

Appliances: parts and components

Automotive: Under hood components, brake systems and electrical/electronic devices requiring high heat resistance, high dimensional stability, and corrosion resistance

Chemical: Fiber extrusion, non-stick chemical resistant coatings

Electrical: Precision molding of connectors and sockets

Industrial: Parts, components, and compression molding processes

Medical: Rollers in peristaltic pumps, bearings in micro-surgery instrument motors, prosthetic device bushings, bearings in high-speed dental drills, high speed robotic surgical tool bushings

Oil & Gas: Linings and protective coatings for metallic equipment and pipes to prevent corrosion and contamination

Rely on Polywel Plastics for Ryton^® PPS Parts

Polywel Plastics offers a depth of experience and knowledge working with Ryton^® and other high-performance, engineered plastics. Our knowledgeable staff is available to work with you on design and engineering parts from concept through volume product creation. Our goal is to create a successful solution for your application.