Preparation method of high-temperature-resistant PPS gas separation membrane

• Main Authors: SU KUNMEI, LI ZHENHUAN, WANG CHAO, NIU XIAOYAN
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2016
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

The invention relates to a preparation method of a high-temperature-resistant PPS gas separation membrane. The preparation method comprises the steps that PPS resin 20-40%, a thinner 59.9-78% and an inorganic nano material 0.1-2% are mixed by weight, heating is performed under inert gas protection to obtain membrane casting liquid, a cured membrane is put in an extractant capable of dissolving the thinner to dissolve the thinner after the membrane casting liquid forms the membrane and is cured, and the PPS gas separation membrane is prepared. The surface layer of the gas separation membrane is dense and free of defects, the glass transition temperature can be up to 125-156 DEG C, the melting range is 280-296 DEG C, and direct separation and purification of high-temperature, corrosive or organic gases can be achieved. 本发明涉及种耐高温PPS气体分离膜的制备方法，是将20～40wt%PPS树脂、59.9～78wt%稀释剂与0.1～2wt%无机纳米材料混合均匀，惰性气体保护下加热得到铸膜液，使所述铸膜液成膜并固化后，将固化膜置于能够溶解所述稀释剂的萃取剂中溶出其中的稀释剂，制成耐高温PPS气体分离膜。所述气体分离膜表皮层致密无缺陷，玻璃化温度可达125～156℃，熔程280～296℃，能实现对高温、腐蚀