Polyplastics USA, Inc. DURAFIDE® PPS 1130A64 HD9100 (ISO)

As was mentioned in the history column, commercial production of polyphenylene sulfide (PPS) was commenced in 1973 by U.S. company Phillips Petroleum. Demand has expanded over the years on account of the resin's high heat resistance. However, the material came to be known as a brittle one because of its adoption of a partially cross-linked structure. In the 1980s, Kureha succeeded in developing a PPS possessing a linear molecular structure with no cross-linked structure and in 1987, our company formed a business alliance with Kureha and started business development for this new PPS. Linear PPS transformed the existing image of cross-linked PPS and it is now starting to establish firm foundations as a new type of PPS that overcomes the issue of brittleness. [ Linear PPS and Cross-linked PPS ] Linear PPS as typified by DURAFIDE possesses the following characteristics compared with cross-linked PPS. 1. Elongation and impact strength are larger, with excellent strong toughness. 2. Ionic impurities are at a low level, and application is possible in fields where demanding electrical properties are required. 3. Thermal stability is excellent, and processability is good. 4. Weld strength is high, and secondary processes such as screwing and press-fitting are excellent. 5. A high degree of whiteness enables coloring. Applications are not limited to electronic components. DURAFIDE's superior properties are being exploited in automotive parts such as lamp sockets, water pumps, and various auto electrical components, as well as in mechanical parts for OA and AV equipment. Still more growth is anticipated for DURAFIDE centered on auto electrical components and housing applications. Characteristics • Mechanical strength is exceedingly high, with flexural strength in particular exhibiting a high value, Excellent elastic recovery is also possessed. • Possesses high toughness, while high values are also exhibited for compression and shear characteristics. • Possesses superior creep characteristics even under high temperatures and loads. In addition, possesses superior fatigue resistance to repetitive stresses. • Elongation and impact strength are high, and brittleness, a major drawback of traditional PPS, has been improved significantly. • Can withstand immersion in 260°C solder bath for 10s, making the resin more than able to cope with electronic component surface mount technologies. • Ionic impurities are low, and application is possible in applications where strict electrical properties are demanded. • Little change in volume resistivity is shown over time, and there is almost no change in dielectric constant due to frequency or temperature. These characteristics make it an excellent insulative material. • Weld strength is high, and superior secondary processability (screws, insertion, etc.) is exhibited.