Abstract

The objective of this study is to enhance the thermal and mechanical properties of the photosensitive resin for RP (Rapid Prototyping) modifying with TiO2 nanoparticles NPs. The coupling agent KH570 was chosen for treating the surface of TiO2 NPs. The influence of the TiO2 content on the viscosity and the curing depth of photosensitive resin were analyzed in this study. We also tested the mechanical properties such as tensile modulus, tensile strength, hardness and flexural strength. Using differential scanning calorimetry, we tested the thermal stability of the modified photosensitive resin. Modified photosensitive resin's comprehensive performance was really good when the content of TiO2 was at 0.25%, the increase in tensile strength from 24.3 to 46.9 MPa was noticed to be 89%, the increase in tensile modulus from 1990 to 2251 MPa was noticed to be 18%, the increase in hardness and flexural strength was noticed to be 5 and 6%, respectively. Moreover, the heat stability and plasticity of the modified photosensitive resin are also enhanced. This paper gives a cost-efficient method of improving the functioning of photosensitive resin for RP.

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