English name: Phenylenesulfide Specific gravity: 1.36g/cm3 molding shrinkage: 0.7% Molding temperature: 300-330℃. It is a kind of thermoplastic special engineering plastic with excellent comprehensive properties, with outstanding characteristics of high temperature resistance, corrosion resistance and superior mechanical properties. PPS is a sulfur-containing aromatic polymer. Linear polyphenylene sulfide is crosslinked into thermosetting plastic above 350℃, and branched polyphenylene sulfide is thermoplastic plastic. PPS was first industrialized by American Phillips Company in 197 1 year. After the patent expired, Japanese companies began to develop and produce. A typical Japanese company is Toray, whose output at present is greater than that of the United States. Other manufacturers are mainly concentrated in the United States, Japan and Europe.
The top five PPS producers in the world are Philips, Toray, Tykona, Bao Li and Daiwa Ink. In China, Tianjin Synthetic Materials Research Institute, Guangzhou No.2 Chemical Reagent Factory, Sichuan Zigong Chemical Reagent Factory, Department of Chemical Engineering of Hebei Institute of Technology, Guangzhou Chemical Research Institute, etc. have all had a small number of small-scale experiments, but they are unable to produce stably and continuously. At present, domestic sellers of PPS include Shanghai Lianmo Chemical. By 2000, the world's PPS output will reach 50,000 tons/year. The largest demand for PPS is 33% in Japan, 32% in North America, 65,438+09% in Western Europe and 65,438+06% in Asia Pacific.