本文以聚矾和磺化聚砜共混物为膜材料，二甲基乙酰胺为溶剂，聚乙烯吡咯啉酮和邻苯二甲酸二甲酯为添加剂配制纺丝液，纺制外压中空纤维超滤膜。
This paper reported the preparation of hollow fiber UF membrane, using PS and SPS as membrane spinning materials, DMA as solvent, PVPand dimethyl phthalate as additives.
研究了在钛材反应器中液相空气氧化3，3'，4，4'-四甲基二苯乙烷制备3，3'，4，4'-二苯甲酮四羧酸的反应规律。
The synthesis of 3,3 , 4,4 -benzophenone tetracarboxylic acid by liquid phase air oxidation of 1,1-bis(3,4-dimethylphenyl)ethane in titanium reactor was studied.
研究了在钛材反应器中液相空气氧化3，3'，4，4'-四甲基二苯乙烷制备3，3'，4，4'-二苯甲酮四羧酸的反应规律。
The synthesis of 3,3 , 4,4 -benzophenone tetracarboxylic acid by liquid phase air oxidation of 1,1-bis(3,4-dimethylphenyl)ethane in titanium reactor was studied.
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