包装材料中聚苯乙烯与碳酸钙含量的热重分析研究

Study on Content Determination of PS and CaCO_3 in Package Materials by TGA

主要运用热重分析技术测定包装材料中聚苯乙烯(PS)与碳酸钙(CaCO3)的含量,并采用正交设计方法,研究不同炉体气氛流量、升温速率、试样用量等实验条件及其交互作用对测试结果的影响,提出了一个快速、准确、便捷、用量少的最佳热重分析方法,并计算了实验分析的稳定性指标,旨在为此类PS/CaCO3包装材料生产过程中的质量控制提供理论和实验依据。

The contents of Polystyrene （PS）and CaCO3 in package materials were determined mainly by TGA. The orthogonal design was applied and a systematic study of the conditional experiments was carried out, suth as the influence of different heating rates, sample weights, gas flow rotes and their interactions on the determination results.A rapid, accurate, convenient and low dosage optimal TGA method was put forward.And the stability index of the experiment was calculated so as to provide a theoretical and experimental basis for the quality-control in the production of such kind of PS/CaCO3 package materials.