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
Drummer
中科院分区:
材料科学2区
文献类型:
--
作者:
Wildner;Drummer

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采用透射光谱法测量了聚甲基丙烯酸甲酯(PMMA)的折射率,分析了固化过程中压力对PMMA折射率的影响。使用样品的最大透射率的波长来评价折射率,其指示PMMA和玻璃的折射率的交叉点。该方法可以测量组件横截面上的平均折射率,而无需进一步的样品制备。测量结果表明,RI显着变化之间的注塑成型样品与不同的压力和样品上的不同位置之间。总结所有测量结果,PMMA的折射率在材料固化期间随着注塑工艺中的压力增加0.0022/1000巴。
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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DOI: --
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