Analysis of the processing-pressure dependent refractive index of Poly(methyl methacrylate) by transmission measurements of glass-filled specimen
Analysis of the processing-pressure dependent refractive index of Poly(methyl methacrylate) by transmission measurements of glass-filled specimen
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通过玻璃填充样品的透射测量分析聚甲基丙烯酸甲酯的加工压力依赖性折射率
DOI:
10.1016/j.polymertesting.2018.09.011
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发表时间:
2018
期刊:
影响因子:
5.1
通讯作者:
Drummer
中科院分区:
文献类型:
--
作者:
Wildner;Drummer
The influence of pressure during solidification on the refractive index of poly(methyl methacrylate) (PMMA) was analyzed by transmission measurements on injection molded glass-filled specimens with a standard spectrometer. The refractive index was evaluated using the wavelength of the maximum transmittance of the specimens, which indicates an intersection of the refractive indices of PMMA and glass. The method makes it possible to measure the average refractive index over the component cross-section without further sample preparation. The measurements show that the RI varies significantly between injection-molded samples produced with different pressures and between different positions on a sample. Summarized over all measurements, the refractive index of PMMA increases by 0.0022/1000 bar with the pressure in the injection molding process during the solidification of the material.
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2003
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1977
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Journal of Research of the National Bureau of Standards Section A Physics and Chemistry
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