FABRICATION OF HEAT INSULATING FILMS WITH SIO2 NANOPARTICLES MODIFIED BY MERCAPTOPROPYL TRIMETHOXYSILANE

摘要

daytime, at night with an increased penetration warm function by light transmission into the house by increasing the light transmittance The radiant heat (IR) of the release is 7 ~ 10 area of the ground by the light house with insulation film having the function to block the release of the external SiO and widely used in current commercial hydrotalcite ₂ micro-sized inorganic filler there are problems with their high transparency and prescribing the content and distribution. In addition, the problem is with the prescription of a situation and then insulation filler, which manufactures insulation film insulation meets, but does not take into account the mechanical properties such as compatibility and dispersion stability between these insulation filler and coating material is lowered. Thus, the present invention is the excellent thermal insulation ethylene-vinyl acetate copolymer (vinyl acetate content: 12 wt%) was coated with materials, thermal insulation filler include silica-based (SiO ₂ ) in the conventional powder a silane coupling agent in order to solve the problems, such as compatibility, deterioration of the dispersion stability and reduction in the transparency and mechanical properties were coated with synthetic material in the nano-scale (20 ~ 30 nm) than the level used in the micro size (Mercaptopropyl trimethoxysilane) surface treated. Surface-treated nano-size of the SiO ₂ 1 to 3% by weight of very small particles dispersed uniformly in the coating material of the insulation film is comparable to that produced by 20 to 40% by weight of the existing characteristics of the micro-particle were obtained to demonstrate the economic benefit.