【作者】 熊翰波；

【导师】 宋光复；

【作者基本信息】 天津大学 ， 化学工程， 2004， 硕士

【摘要】 聚碳酸酯是综合性能极为优异的工程塑料品种，共聚是降低其制品双折射的重要手段。本文研究了位阻酚类抗氧剂、间苯二酚和1,4-环己烷二甲醇分别作为共聚单体同碳酸二苯酯（DPC）的反应活性，最终确定了间苯二酚和1,4-环己烷二甲醇作为共聚单体。并考察了两种共聚单体同碳酸二苯酯（DPC）生成预聚物的工艺条件（温度、压力、催化剂）。采用先生成共聚单体与DPC的预聚物，再将预聚物与双酚A（BPA）共聚的方法，得到双酚A型共聚碳酸酯。测定结果显示，其分子量达到了19,000以上。从13CNMR谱图分析可以看出，通过共聚方式，在聚碳酸酯的主链上成功的引入了间苯二酚和1,4-环己烷二甲醇的结构单元。产品物理性能测试结果表明，与普通双酚A聚碳酸酯相比，共聚产品的双折射明显降低，熔融指数显著增大。更多还原

【Abstract】 Polycarbonate (PC) is an excellent engineering plastic for its outstanding properties. Co-polymerization is an important method to reduce its birefringence. In our study, resorcin and 1,4-cyclohexanedimethanol, together with three kinds of anti-oxidants (including CA, BBM and 2246) are used as co-monomers in the production of co-polycarbonate. Among them, resorcin and 1,4-cyclohexanedi- methanol are preferred according to the result of reactivity tests. The two co-monomers are first reacted with DPC respectively to form the oligomers, and then bis-phenol A is added to the oligomers to form the co-polymers. Several factors that influence the preparation of oligomers, including temperature, pressure and catalysts, are studied. The resorcin and 1,4-cyclohexanedimethanol structures are both found in the 13CNMR spectra. The result of analysis shows the molecular weight exceeds 19,000. Compare to the common bis-phenol A polycarbonate, the co-polycarbonate has a lowered birefringence and better melt flow property (MFR).更多还原