| 摘要 |
PROBLEM TO BE SOLVED: To prepare a coating solution that can form a membrane having high light transmission and low light reflection in the visible region, low transmission and high reflection in the near infrared region, electroconductivity controllable to about >=106 Ω/square via a simple coating method in no need of expensive physical membrane formation method, and obtain a sun radiation- screening material to be used in the solution and a sun radiation-screening membrane prepared by using this material. SOLUTION: This sun radiation-screening material contains particles of a hexaboride substance. This sun radiation-screening coating solution includes fine particles of hexaboride dispersed in a solution. In addition to the hexaboride particles, ATO, ITO, AZO may be used. In a preferred embodiment, the sun radiation screening membrane has a surface resistance value of >=106 Ω/square, further the permeability profile of the membrane has a maximum in the range of from 400 nm to 700 nm, while a minimum in the range of from 700 to 1,800 nm where the difference between the maximum and the minimum is >=15 points. |
