MMA-粉煤灰漂珠體系凝膠注模成型制備陶瓷復(fù)合膜研究
發(fā)布時(shí)間:2018-06-05 01:38
本文選題:甲基丙烯酸甲酯 + 粉煤灰漂珠。 參考:《中國(guó)陶瓷》2017年04期
【摘要】:以甲基丙烯酸甲酯(MMA)為有機(jī)單體,粉煤灰漂珠為骨料,采用非水基凝膠注模成型技術(shù)在支撐體表面制備膜層。主要考察了單體添加量對(duì)膜層的影響及燒結(jié)溫度對(duì)陶瓷復(fù)合膜性能的影響。研究結(jié)果表明:混合漿料中MMA預(yù)聚液的質(zhì)量分?jǐn)?shù)為50%時(shí),其黏度為1019.4m Pa·s,可以在支撐體表面聚合成膜。當(dāng)燒結(jié)溫度從950℃升高至1100℃,膜層的孔隙率下降,抗彎強(qiáng)度隨之增強(qiáng),耐酸堿腐蝕性大幅提升;復(fù)合膜的純水通量和平均孔徑顯著下降,且提高燒結(jié)溫度使孔徑分布變窄。在1050℃下燒結(jié)2h,可以得到抗彎強(qiáng)度為38.2 MPa,平均孔徑為0.86μm的陶瓷復(fù)合膜,其純水通量為1061.9 L·m~(-2)·h~(-1),對(duì)聚乙二醇20000和分散大紅染料分子的截留率分別達(dá)到31.7%和47.2%(0.2MPa)。
[Abstract]:Using methyl methacrylate (MMA) as an organic monomer and fly ash beads as aggregate, a film layer was prepared on the surface of the support by non-aqueous gel injection molding technology. The effect of monomer addition on the film and the effect of sintering temperature on the properties of ceramic composite film were investigated. The results show that when the mass fraction of MMA prepolymer is 50, its viscosity is 1019.4mPa / s, which can be polymerized on the surface of the support. When the sintering temperature is increased from 950 鈩,
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