CN106517819A - Preparation method of low-radiance heat insulation composite coated glass - Google Patents

Abstract

The invention relates to the technical field of functional materials, in particular to a preparation method of low-radiance heat insulation composite coated glass. The preparation method of the low-radiance heat insulation composite coated glass includes the steps that methyltrimethoxysilane is dissolved in methyl alcohol, an oxalic acid solution is added, stirring is conducted, and the obtained solution is placed at the room temperature for 24 h of ageing; ammonium hydroxide and deionized water are added, stirring is conducted, the obtained sol is subjected to gel ageing for 2 days at the room temperature, and then a homogenized sol solution is obtained; SnO2:F(FTO) coated glass serves as a substrate and is subjected to cleaning and ultrasonic cleaning for use; the sol solution is applied to the substrate in a spin-coating mode, drying is conducted, heat treatment is conducted at 600 DEG C, and the SnO2:F/SnO2 aerogel composite coated glass is obtained. By means of the preparation method, the SiO2 aerogel-FTO composite coated glass with low heat conductivity and low radiance is successfully prepared, wherein the thickness of a SiO2 aerogel film is 1.4 micrometers, the transmittance of the S composite coated glass is 75% or so, the radiance is 0.53, and after coating, the heat conductivity of the composite coated glass is reduced to 3.368 from 3.615.

Description

The preparation method of the heat-insulated composite film coating glass of Low emissivity

Technical field

The present invention relates to technical field of function materials, and in particular to a kind of preparation side of the heat-insulated composite film coating glass of Low emissivity Method.

Background technology

With expanding economy, energy resource consumption quickly increases, the series of environmental problems caused by energy resource consumption, for example entirely Ball warms, air pollution etc. increasingly sharpens.In energy resource consumption, building energy consumption is occupied greatly, therefore designs energy-conservation Environment protection architecture is the trend of future architecture development.Building glass plays a part of can not be ignored in energy saving building.For having The glass of energy saving, will not only meet certain lighting performance, while needing good thermal insulation, reduce hot spoke outside summer room Inject interior and winter indoor temperature is scattered and disappeared, at utmost reduce the energy consumption of the regulating and controlling temperature equipment such as room conditioning.

At present, energy-saving glass mainly has Low-E glass, solar-control glazing, vacuum glass etc..Wherein Low-E glass I.e. low radiation coated glass, is one kind of energy-conservation coated glass, and its energy-saving principle is to plate 1 layer to have relatively low radiation on glass The film of coefficient, reduces glass heat loss through radiation, reduces the heat transfer of glass system；On the other hand, SiO₂Aerogel material has nanometer The three dimensions Specific surface area of skeleton composition, its density is low, porosity is high, thermal conductivity is low, refractive index is low, transmitance is high Excellent properties, are the ideal selections as building glass transparent heat-insulating film.If by this transparent heat-insulating film with it is transparent Low-radiation film is combined, it is possible to increase thermal insulation and the low diathermaneity of building glass, further improves the energy saving of glass.

The content of the invention

It is contemplated that proposing a kind of preparation method of the heat-insulated composite film coating glass of Low emissivity.

Technical program of the present invention lies in：

The preparation method of the heat-insulated composite film coating glass of Low emissivity, comprises the following steps：

1.36g MTMSs are dissolved the 710 μ L of oxalic acid solution for adding 0.001 mol/L in methyl alcohol, in room The lower stirring 30min of temperature, resulting solution is placed under room temperature condition and is aged 24h；Second step, adds ammonia and deionized water, stirring 15min, the proportioning of each material in the colloidal sol for finally giving is n (MTMS): n (MEOH): n (H₂O)∶n (C₂H₂O₄ )∶n (NH₄OH)=0.01: 0.35: 0.08: 7.1 × 10^-7∶1.0×10-²；After under the colloidal sol room temperature condition for obtaining, gel is aged 2 days, Gel is diluted in methyl alcohol, is stirred with homogenizing agitator, is obtained the sol solution after homogenizing；

With SnO₂: used as substrate, after being cleaned with detergent first, deionized water is cleaned by ultrasonic 1h to F (FTO) coated glasses；With EtOH Sonicate cleans 30min, soaks stand-by in ethanol；

Sol solution is spun on substrate, spin speed is 2900r/min, is put into after being dried at room temperature for 24h in electric furnace, Under the conditions of 600 DEG C, heat treatment 1.5h, obtains SnO₂∶F/ SnO₂Aeroge composite film coating glass.

The method have technical effect that：

The present invention plates SiO in FTO glass surfaces₂Aerogel film, is successfully prepared the SiO for having low thermal conductivity, low diathermaneity concurrently₂ Aeroge-FTO composite film coating glass, wherein SiO₂The thickness of aerogel film is 1.4 μm, the transmitance of S composite film coating glass 75% or so；Radiance is that the thermal conductivity of composite film coating glass after 0.53 plated film is reduced to 3.368 from 3.615.

Specific embodiment

The preparation method of the heat-insulated composite film coating glass of Low emissivity, comprises the following steps：

1.36g MTMSs are dissolved the 710 μ L of oxalic acid solution for adding 0.001 mol/L in methyl alcohol, in room The lower stirring 30min of temperature, resulting solution is placed under room temperature condition and is aged 24h；Second step, adds ammonia and deionized water, stirring 15min, the proportioning of each material in the colloidal sol for finally giving is n (MTMS): n (MEOH): n (H₂O)∶n (C₂H₂O₄ )∶n (NH₄OH)=0.01: 0.35: 0.08: 7.1 × 10^-7∶1.0×10-²；After under the colloidal sol room temperature condition for obtaining, gel is aged 2 days, Gel is diluted in methyl alcohol, is stirred with homogenizing agitator, is obtained the sol solution after homogenizing；

With SnO₂: used as substrate, after being cleaned with detergent first, deionized water is cleaned by ultrasonic 1h to F (FTO) coated glasses；With EtOH Sonicate cleans 30min, soaks stand-by in ethanol；

Sol solution is spun on substrate, spin speed is 2900r/min, is put into after being dried at room temperature for 24h in electric furnace, Under the conditions of 600 DEG C, heat treatment 1.5h, obtains SnO₂∶F/ SnO₂Aeroge composite film coating glass.

Claims (1)

1. the preparation method of the heat-insulated composite film coating glass of Low emissivity, it is characterised in that：Comprise the following steps：

1.36g MTMSs are dissolved the 710 μ L of oxalic acid solution for adding 0.001 mol/L in methyl alcohol, in room The lower stirring 30min of temperature, resulting solution is placed under room temperature condition and is aged 24h；Second step, adds ammonia and deionized water, stirring 15min, the proportioning of each material in the colloidal sol for finally giving is n (MTMS): n (MEOH): n (H₂O)∶n (C₂H₂O₄ )∶n (NH₄OH)=0.01: 0.35: 0.08: 7.1 × 10^-7∶1.0×10-²；After under the colloidal sol room temperature condition for obtaining, gel is aged 2 days, Gel is diluted in methyl alcohol, is stirred with homogenizing agitator, is obtained the sol solution after homogenizing；

With SnO₂: used as substrate, after being cleaned with detergent first, deionized water is cleaned by ultrasonic 1h to F (FTO) coated glasses；Use second Alcohol is cleaned by ultrasonic 30min, soaks stand-by in ethanol；

Sol solution is spun on substrate, spin speed is 2900r/min, is put into after being dried at room temperature for 24h in electric furnace, Under the conditions of 600 DEG C, heat treatment 1.5h, obtains SnO₂∶F/ SnO₂Aeroge composite film coating glass.