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Theoretical and experimental investigation of an ultrathin optical polymer light guide plate during continuous injection direct rolling
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Theoretical and experimental investigation of an ultrathin optical polymer light guide plate during continuous injection direct rolling
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Journal Article
Theoretical and experimental investigation of an ultrathin optical polymer light guide plate during continuous injection direct rolling
2021
Overview
Considering the influence of heat radiation, heat conduction, and plastic deformation, a novel temperature model of the injection-rolling zone during continuous injection direct rolling (CIDR) was developed through a mathematical analysis method. Numerical simulations based on the novel temperature model in the injection-rolling zone were performed under different injection temperatures, injection speeds, roller temperatures, roller speeds, and exit plate thicknesses. The novel temperature model was validated with actual CIDR experiments. The results showed that the polymer flow in the injection-rolling zone was laminar, and the injection speed and roller temperature had a substantial influence on the exit temperature of injection-rolling. The temperatures obtained through numerical simulations based on the novel temperature model were highly consistent with the measured temperatures with an average error of 2.4%. The microstructure ultrathin polymethyl methacrylate (PMMA) light guide plate with superior performance was manufactured through a CIDR experiment. The average height replication rate of microstructures with the aspect ratio 1:3 was 93.34%, and the average width replication rate was 101.13%. The average light transmittance was 88.32%, and the average reflectance was 8.7%.
Publisher
Springer London,Springer Nature B.V
