Celanese Corporation (Dallas, TX) will expand its compounding capabilities at its Nanjing, China, site to include Fortron polyphenylene sulfide (PPS) compounds. The PPS compounding expansion is expected to be operational by year-end 2014. Currently the firm compounds PBT, LCP and POM materials there
The capacity will be capable of compounding recently launched PPS products such as CES50 and ICE, which Celanese was highlighting at the recent Chinaplas show.
Fortron ICE (Improved Crystallization Evolution) is reportedly particularly suited to the Asian market according to Celanese, given that it can be molded at cooler tool temperatures of as low as 90°C. Processors need not invest in "hot molding" equipment that uses hot oil to generates tool temperatures of the order of 135°C. "A lot of Chinese processors use injection machines that are not that advanced and lack the sophisticated temperature control required for hot molding," says Kevin Wu, Global Business Director, Engineered Materials at Celanese. "They can run ICE at lower temperature and still achieve full crystallization."
Those processors with hot molding capability, meanwhile, can enjoy benefits such as reduced cycle times and enhanced demolding of parts. "We've seen an average cycle time reduction of 29% in applications such as impellers and connectors over 200 shots," says Wu." Water adsorption is also low at 0.02% and the material also exhibits good creep properties."