1.金发科技股份有限公司企业技术中心，广东省特种工程塑料重点实验室，广州 510663； 2.珠海万通特种工程塑料有限公司，广东珠海 519000
Comparison of Dehydration Process in Polymerization of Poly(phenylene sulfone) Resin
Li Jieliang12, Gao Hongjun12, Sun Xueke12, Chen Ruibin12, Jiang Sujun12, Cao Min12
1. Guangdong Key Laboratory for Specialty Engineering Plastics, National-certified Enterprise Technology Center, Kingfa Science and Technology Co., Ltd., Guangzhou 510663, China; 2. Zhuhai Vanteque Specialty Engineering Plastics Co., Ltd., Zhuhai 519000, China
Abstract：The exhaust emission and material loss of closed-loop dehydration process and traditional continuous nitrogen dehydration process in the polymerization of poly(phenylene sulfone) (PPSU) resin were contrastively studied. The influences of closed-loop dehydration process on the thermal stability and mechanical properties of PPSU resin were accessed through high pressure capillary rheological test, mechanical properties tests, and high temperature injection molding methods. The results indicate the effects of the new closed-loop dehydration process is better than traditional continuous nitrogen dehydration process. The thermal stability and mechanical properties of PPSU resin obtained with the closed-loop dehydration process are almost the same as those of PPSU resin obtained by the continuous nitrogen dehydration process. More importantly, compared with the continuous nitrogen dehydration process, when the inlet gas velocity is 0.1 m3/h, the tail gas emission of closed-loop dehydration process is reduced by 64.5%, nitrogen consumption is reduced by 95.6%, sulfolane (solvent) loss is reduced by 92.0%, and xylene (entrainer) loss is reduced by 88.9%, which significantly reduces the amount of exhaust gas and the synthesis cost of PPSU resin, and is helpful to achieve green resin synthesis.
Keywords：poly(phenylene sulfone) resin; polymerization; dehydration process
Li Jieliang，Gao Hongjun，Sun Xueke，et al. Comparison of dehydration process in polymerization of poly(phenylene sulfone) resin[J].Engineering Plastics Application，2022，50(1)：54-59.