Infrared reflective thin film, ink for forming the same, infrared reflective seal and infrared reflective body having the infrared reflective thin film, and building or vehicle equipped with the infrared reflective body
国立研究開発法人産業技術総合研究所;NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
发明人:
胡 致維,山田 保誠,HU ZHI WEI,YAMADA YASUMASA
申请号：
JP2018240641
公开号：
JP2020101733A
申请日:
2018.12.25
申请国别(地区):
JP
年份:
2020
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide an infrared reflective thin film having a high reflectance of infrared rays including far infrared rays and a low reflectance of visible light, and an ink for forming the same. The infrared reflective thin film is substantially composed of a silver fine structure, has an average thickness of 150 nm or more, and has an arithmetic average surface roughness (Ra) of 18 nm to 100 nm. In addition, the ink for forming an infrared reflective thin film comprises a silver fine structure dispersed in an aqueous solvent or an organic solvent, and the silver fine structure has fine particles having an average particle diameter of 1 nm to 300 nm, and/or an average length. It is assumed that the thin flakes have a size of 100 nm to 2000 nm. [Selection diagram] Fig. 4【課題】遠赤外線を含む赤外線の反射率が高く、可視光の反射率が小さい赤外線反射薄膜、及びこれを形成するためのインクを提供する。【解決手段】赤外線反射薄膜を、銀微細構造体から実質的になり、平均厚みが１５０ｎｍ以上であり、算術平均表面粗さ（Ｒａ）が１８ｎｍ～１００ｎｍであるものとする。また、赤外線反射薄膜形成用のインクを、銀微細構造体が水系溶媒又は有機系溶媒に分散されてなり、前記銀微細構造体が、平均粒径が１ｎｍ～３００ｎｍの微粒子、及び／又は平均長さが１００ｎｍ～２０００ｎｍの微小薄片であるものとする。【選択図】図４
