本文選題：雙酚A型聚碳酸酯 + 非光氣固相縮聚法　； 參考：《華東理工大學(xué)》2014年碩士論文

【摘要】：雙酚A型聚碳酸酯(BAPC)具有良好的機(jī)械性能和透光性,作為工程塑料得到了廣泛應(yīng)用；但目前國(guó)內(nèi)產(chǎn)能很小,遠(yuǎn)不能滿足市場(chǎng)需求,且生產(chǎn)技術(shù)大都被國(guó)外壟斷；工業(yè)上目前廣泛采用界面光氣法和非光氣熔融縮聚法生產(chǎn)聚碳酸酯,但兩者都存在一定的弊端；因此,有必要開(kāi)發(fā)具有獨(dú)立知識(shí)產(chǎn)權(quán)的新工藝。本文概述了BAPC的結(jié)構(gòu)與性質(zhì)、應(yīng)用領(lǐng)域、產(chǎn)能及市場(chǎng)情況；詳述了BAPC的合成工藝和結(jié)晶工藝,確定了以碳酸二苯酯(DPC)和雙酚A(BPA)為原料進(jìn)行固相縮聚的工藝路線,以解決熔融縮聚后期溫度高、高粘體系傳質(zhì)傳熱方面的問(wèn)題。本課題主要從催化劑的篩選、預(yù)聚體預(yù)處理工藝、預(yù)聚體的結(jié)晶工藝、固相縮聚反應(yīng)的程序升溫和出料溫度等幾個(gè)方面進(jìn)行考察,結(jié)果表明：以四乙基氫氧化銨為催化劑經(jīng)熔融酯交換制得BAPC預(yù)聚體,然后以二氯甲烷和甲醇分別為溶劑和抗溶劑且兩者體積比為1：1處理預(yù)聚體并真空干燥2h,固相縮聚最佳出料溫度為200℃；經(jīng)溶劑液相誘導(dǎo)后預(yù)聚體結(jié)晶度均有一定的提高,但BAPC的品質(zhì)未能提高；固相縮聚時(shí),對(duì)低分子量預(yù)聚體采用程序升溫并適度提高后期縮聚溫度可以有效的提高BAPC的品質(zhì)。
[Abstract]:Bisphenol A polycarbonate (BAPC) has been widely used as engineering plastics because of its good mechanical properties and light transmittance. The interfacial phosgene process and non-phosgene melt Polycondensation process are widely used in industry to produce polycarbonate, but both of them have some drawbacks. Therefore, it is necessary to develop a new process with independent intellectual property rights. In this paper, the structure and properties, application field, production capacity and market situation of BAPC are summarized, the synthesis and crystallization process of BAPC are described, and the process route of solid phase Polycondensation using diphenyl carbonate (DPC) and bisphenol A (BPA) as raw materials is determined. In order to solve the problem of mass transfer and heat transfer in high temperature and high viscosity system after melt Polycondensation. In this paper, the selection of catalyst, pretreatment process of prepolymer, crystallization process of prepolymer, programmed temperature and discharge temperature of solid phase Polycondensation reaction were investigated. The results showed that BAPC prepolymer was prepared by transesterification with tetraethyl ammonium hydroxide as catalyst. Then dichloromethane and methanol were used as solvent and anti-solvent respectively, and the prepolymer was treated with the volume ratio of 1:1 and vacuum drying for 2 h, and the optimum discharge temperature was 200 鈩，

本文編號(hào)：2054782