화염 열복사의 파장별 선택적 반사를 위한 도료 코딩에 대한 수치적 연구

Abstract

The infrared reflection coatings with pigment can be used to protect the surfaces of combustible materials exposed to fire. To obtain high reflectivities in the infrared range (0. 5-10/lm) irnportant to fire, several dielectric pigments, such as titanium dioxide, iron oxide, and silicon, can be synthesized to polymer coatings. The theoretical analysis shows that the coating design with particles diameter in the 1.5 to 2. 5,um range and volume fraction in the 0.1 to 0.2 range is estimated to be optimal. In the analysis of the radiation, the dependent scattering, absorption by polymeric binder, and the internal interface reflection are considered. In addition, the temperature

distribution in the semi-transparent coating layer and an opaque substrate (PMMA) is also

presented.