Isolation film containing nano copper-aluminum sulfide and preparation method thereof

Abstract

The invention discloses an isolation film containing nano copper-aluminum sulfide and a preparation method thereof. A matrix of the isolation film is a SiO2 / organic group composite material which is formed in a manner that organic modified silicon alkoxide methyl triethoxysilane (MTES) and gamma-(2,3-epoxy propoxy)propyl trimethoxysilane (KH560) are subjected to hydrolysis and polymerization, and nano powder for near-infrared absorption is of a chalcopyrite structure, namely CuAlS2. The powder is prepared by an ultrasonic atomization method. A copper sulfide and aluminum sulfide mixed solution and a sodium sulfide solution are subjected to contact reaction so as to produce CuAlS2; and the powder is subjected to powder treatment, such as wet grinding and dry grinding, is then dispersed into a cetyl methyl ammonium bromide solution, is then compounded with MTES / KH560 and is then coated on the surface of a clean dacron substrate film, so as to prepare an unsupported thick film containing nano CuAlS2. The isolation film has the advantages of simple process, low cost, convenience in operation and high synthesis efficiency and can be expected to be applied to solar heat shielding and professional infrared absorption materials.

Description

technical field [0001] The invention relates to a solar heat insulation material, in particular to a preparation method of an isolated film containing nanometer copper and aluminum sulfide. Background technique [0002] Solar heat insulation materials mainly include heat reflective glass and low-emissivity glass, which can effectively isolate near-infrared light and have high visible light transmission performance. Heat reflective glass is a metal or metal oxide film formed on the surface of the glass. Its high reflection of near-infrared sunlight achieves the purpose of heat insulation, but its high reflection of visible light is easy to cause light pollution. Low-emissivity glass is to deposit a dielectric layer, a barrier layer and a nano-metal layer on the surface of the glass, and achieve the effect of heat insulation through the mid-to-far infrared rays radiated by high-reflection indoor thermal objects. For example, the invention patent application with the publicatio...

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Problems solved by technology

Heat reflective glass is a metal or metal oxide film formed on the surface of the glass. Its high reflection of near-infrared sunlight achieves the purpose of heat insulation, but its high reflection of visible light is easy to cause light pollution.

Low-emissivity glass is to deposit a dielectric layer, a barrier layer and a nano-metal layer on the surface of the glass, and achieve the effect of heat insulation through the mid-to-far infrared rays radiated by high-reflection indoor thermal objects. For example, the invention patent application with the publication number CN102092960 is a medium Layer-barrier layer-silver layer-transition layer-barrier layer-dielectric layer-glass; multilayer deposition expensive large-scale equipment, complex manufacturing process, high manufacturing cost

The invention patent with the notification number CN100588737C discloses that copper-aluminum sulfide is used as the target material, and silicon wafer or glass is used as the substrate, and a transparent film containing copper-sulfur is obtained by pulsed laser deposition, but the copper-aluminum sulfide is obtained through copper, aluminum , sulfur element or copper sulfide and aluminum are obtained by sintering after solid-state reaction, the reaction is not uniform, copper and aluminum sulfide needs silicon wafer or glass as the substrate, and cannot be independently formed into a film

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