International Journal of Polymer Science / 2013 / Article / Tab 2

Research Article

A Novel Continuous Extrusion Process to Fabricate Wedge-Shaped Light Guide Plates

Table 2

Characteristics of PMMA material.

TypeSUMIPEX EX

Refractive index1.49
Total light transmittance (%)>92
Haze (%)<0.5
Vicat softening temperature (°C)104
Deflection temperature under load (°C)99
Melt flow rate (g/10 min)1.5
Tensile strength (MPa)74
Specific gravity (g/m3)1.19
Mold shrinkage (%)0.2–0.6
Water absorption (%)0.3