| 초록 |
In this study thermal shield laminated glass was manufactured, using IPDI tetra thiol oligomer synthesized as binder resin, and three monomers which have different reactivities were used to optimize the dispersion of ATO nano powder. Photocurable laminated glass was manufactured, using photoinitiator in binder resin, of which the characteristics were analyzed. IPDI tetra thiol oligomer was synthesized as binder resin, and two monomers, such as HDDA(1,6 Hexanediol Diacrylate) and Isobornyl acrylate, were added to optimize viscosity. To fill the gap of laminated glass the resin of which the viscosity is below 300 cps was synthesized. To give the dispersion stability and transparency of ATO nano powder in binder resin, the particle size of ATO nano powder must be smaller than 100 nm, and the content less than 1.0 wt%. To investigate the transmittance of visible light and the characteristics of infrared ray wavelength range, ATO nano powder of 0.2, 0.4, 0.6, 0.8 and 1.0 wt% was added in binder resin. The blocking rate of infrared ray is better than Low-E glass (visible light of 75 % and infrared ray of 50 %), but the transparency is significantly low as visible light is below 60 % in ATO nano powder of 0.6, 0.8 and 1.0 wt%. When adding ATO nano power of 0.2 wt%, the transmittance rate of infrared ray is comparatively higher than that of Low-E glass. The result shows that to have the transparency and thermal shield function the transmittance rate of visible light must be higher than 70% and that of infrared ray lower than 50%. The laminated glass adding ATO nano powder of 0.4 wt% has the similar characteristics of Low-E glass. Laminated glass has excellent light resistance as the yellow index is below 1/10 of KS standard in accelerated weathering experiment. Also, laminated glass is stable in accelerated weathering and drop and shock test, and fit in KS standard. |
