超临界乙醇催化解聚聚碳酸酯的研究

论文编号:ZY033    论文字数:13807,页数:28

摘要： 聚碳酸酯（PC）是一种综合性能优良的热塑性工程塑料，在各应用领域被广泛使用，但由于回收降解技术尚未成熟，本课题针对此选用了超临界流体技术（SCF）来回收利用聚碳酸酯, 并介绍了超临界流体的基本性质及其在废旧塑料化学循环回收中的应用，研究了控制个别因素条件（反应温度，反应压力，反应时间及投料比），聚碳酸酯在超临界乙醇中解聚反应的效果变化，结合本实验装置的实际情况，最终确定了超临界乙醇催化解聚聚碳酸酯的最佳工艺条件为：解聚温度应控制在190℃左右、反应时间在15min左右、投料比7为左右，压力控制于5～6Mpa。该方案既回收资源，绿色环保，避免浪费，又根本消除污染，具有其独特的优异性，将为废弃塑料回收治理提供基础数据和根本出路，走可持续发展之路。

关键词：聚碳酸酯；双酚A ；乙醇；超临界流体；解聚

Abstract: Polycarbonate (PC) is an integrated high-performance thermoplastic engineering plastics in various application fields are widely used, but the technology of recovery degradation is not yet mature, So the topics selects supercritical fluid technology (SCF) to recycle the polycarbonate，and introduces the basal characteristics of supercritical fluids and its application on chemical recycling of waste plastics. The paper studies that change of the conditions of individual factors (example:temperature, pressure, reaction time and the ratio) to lead the effect of depolymerization of Polycarbonate in supercritical ethanol. with the actual situation of the experimental devices, Ultimately, identifies the optimum condition of supercritical ethanol catalytic and depolyme- rization polycarbonate: depolymerization temperature should be conrolled at 190℃, the reaction time in about 15 min, the ratio is about 7. The programme is recycling resources, environmental protection, and avoid waste, and pollution, with its unique Value, recycling plastic waste management will provide the basic data and fundamental way, and take the road of sustainable development.

 Keywords: depolymerization; bisphenol A; alcohol; supercritical fluids; polycarbonate
 
 目录
1  绪 论 1
1.1  概述 1
1.1.1  聚碳酸酯（pc） 1
1.2  聚碳酸酯的生产技术进展 3
1.3  聚碳酸酯的回收处理法 4
1.4  课题研究的内容 8
1.5  实验方案的确定 9
2  实验部分 10
2.1  实验试剂及原料 10
2.2  实验仪器 10
2.3  实验装置图 10
2.4  影响因素 11
2.5  实验过程 11
3  实验结果及讨论 13
3.1  实验结果 13
3.2  反应条件对解聚反应的影响 15
4  结论与展望 19
4.1  结论 19
4.2  展望 19
致 谢 21
参考文献 22
附 录 25