Nano copper sulphide/barium sulphide-containing isolated membrane and preparation method thereof

Abstract

The invention discloses a nano copper sulphide / barium sulphide-containing isolated membrane and a preparation method thereof. A base stock of the isolated membrane is an m(CH3SiO3 / 2)-n(TiO2)-based organic-inorganic isolated composite material formed by hydrolyzing and polymerizing organic modified silicon alkoxide methyl triethoxysilane(MTES) and butyl titanate through a sol-gel technology, and the nano powder for near-infrared absorption has a copper pyrite structure BaCu2S2. The powder is prepared through an ultrasonic atomization method. A copper sulphide / barium sulphide mixed solution and a sodium sulphide solution are subjected to a contact reaction to generate the BaCu2S2. The powder is treated by powder treatments, such as wet grinding and dry grinding, then dispersed in a cetyl methyl ammonium bromide solution and further compounded with the MTES / butyl titanate, and then, the compound material is coated on the surface of a clean terylene substrate membrane, thus, the nano BaCu2S2 unbraced thick membrane is prepared. The preparation method is simple in process, low in cost, convenient to operate and high in synthetic efficiency, and the refractive index of the prepared thin membrane material is high, thus, the preparation method can be expected to be used for infrared absorption materials for solar heat shielding and the infrared absorption materials in special fields.

Description

technical field [0001] The invention relates to a solar heat insulation material, in particular to an isolated film containing nano barium copper sulfide and a preparation method. 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 publication number C...

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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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