本文選題：凝膠注模成型 + 甲基丙烯酸甲酯��； 參考：《材料科學(xué)與工程學(xué)報(bào)》2017年06期

【摘要】：以甲基丙烯酸甲酯(MMA)為單體,粉煤灰漂珠為骨料,采用非水基凝膠注模成型工藝制備多孔陶瓷�？疾炝薓MA含量對(duì)漿料性能的影響、MMA預(yù)聚合方式對(duì)漿料成型的影響以及生坯的排膠與燒結(jié)方法,并對(duì)多孔陶瓷性能進(jìn)行了表征。研究表明:微波預(yù)聚合可縮短誘導(dǎo)期、加速M(fèi)MA本體聚合;過(guò)高的微波功率和引發(fā)劑用量使反應(yīng)加速,不利于聚合穩(wěn)定;提高預(yù)聚合程度有助于縮短漿料固化時(shí)間、降低生坯體積收縮;為保證漿料的流動(dòng)性及生坯的完整性,應(yīng)將MMA預(yù)聚液含量控制在45wt%~60wt%;生坯(MMA 50wt%)在380℃排膠1h、1050℃燒結(jié)2h,得到的多孔陶瓷抗彎強(qiáng)度為40.35MPa,顯氣孔率為42.03%,平均孔徑為1.12μm。
[Abstract]:Using methyl methacrylate (MMA) as monomer and fly ash beads as aggregate, porous ceramics were prepared by non-aqueous gel injection molding process. The influence of MMA content on the properties of slurry was investigated. The influence of prepolymerization mode on the slurry forming and the method of sizing and sintering of raw billet were also investigated. The properties of porous ceramics were characterized. The results show that microwave prepolymerization can shorten the induction period and accelerate the bulk polymerization of MMA, the high microwave power and the amount of initiator can accelerate the reaction, which is not conducive to the stability of polymerization, and the higher the degree of prepolymerization is, the shorter the curing time of the slurry is. In order to reduce the volume shrinkage of the billet, to ensure the fluidity of the slurry and the integrity of the blank, the content of MMA prepolymer should be controlled at 45wtand 60wt, and the billet / MMA50wtx) was discharged at 380 鈩，

本文編號(hào)：1975667