Analysis of the Processing‐Pressure Dependent Refractive Index of Polycarbonate by Transmission Measurements of Glass‐Filled Specimen
Analysis of the Processing‐Pressure Dependent Refractive Index of Polycarbonate by Transmission Measurements of Glass‐Filled Specimen
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DOI：
10.1002/pen.25306
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发表时间：
2020-03
影响因子：
3.2
通讯作者：
B. Roth;Wolfgang Wildner;D. Drummer
中科院分区：
文献类型：
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作者：
B. Roth;Wolfgang Wildner;D. Drummer
通过对玻璃填充样品的透射率测量，研究了加工过程中压力对聚碳酸酯(PC)折射率的影响。为了将RI的压力依赖性与冷却速度、取向和应力状态等其他影响参数分离开来，在恒定冷却速度和温度历史以及没有剪切效应的情况下，在压力比体积温度(PVT)仪中制备了样品。随后，通过评估样品的最大透过率波长，在玻璃和聚合物的色散曲线的交点处确定RI。样品整个横截面上的平均RI由透射率测量确定，不需要复杂的样品制备。研究表明，随着压力的增加，聚碳酸酯的阻力系数每巴增加3.26E-6。波兰姆。英语。科学，60：512-516,2020。©2019作者。聚合物工程与科学由威利期刊公司代表塑料工程师学会出版。
In this study, the influence of pressure during processing on the refractive index (RI) of polycarbonate (PC) was investigated by transmission measurements on glass‐filled samples with a spectrometer. In order to isolate the pressure dependence of the RI from other influencing parameters such as cooling rate, orientation and stress states, the samples were prepared in a pressure‐specific volume‐Temperature (pvT) instrument under constant cooling rate and temperature history and without shear effects. Subsequently, the RI was determined at the intersection of the dispersion curves of the glass and the polymer by evaluating the wavelength of the maximal transmission of the samples. The mean RI over the entire cross section of the sample is determined by the transmission measurements without complex sample preparation. The investigations show that the RI of PC increases by 3.26 E‐6 per bar with increasing pressure. POLYM. ENG. SCI., 60:512–516, 2020. © 2019 The Authors.Polymer Engineering & Sciencepublished by Wiley Periodicals, Inc. on behalf of Society of Plastics Engineers.