阅读说明：本技术 一种节能环保型中空玻璃及其生产工艺 (Energy-saving environment-friendly hollow glass and production process thereof ) 是由 姚磊磊 刘勇 刘宁 常平 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种节能环保型中空玻璃及其生产工艺,涉及玻璃制品领域,该生产工艺,通过将平板玻璃用氢氧化钠溶液与盐酸溶液擦洗,之后使用清水洗净,烘干,得到玻璃基底,将隔热涂料刮涂于玻璃基底一侧表面,之后置于真空干燥箱中干燥,固化形成隔热涂层,将两块玻璃基底安装在铝合金框架中,涂上密封胶将铝合金框架、玻璃基底连接处密封,待密封胶完全固化后,得到该节能环保型中空玻璃；通过使用该节能环保型中空玻璃,其中一侧的隔热涂层位于室外,能够明显阻挡太阳能的辐射,在保证透光率的情况下阻隔太阳光热量向室内传递,另一侧的隔热涂层位于室内,阻挡室内热量向室外传递,降低空调控制室温的能耗,达到节能环保的效果。(The invention discloses energy-saving environment-friendly hollow glass and a production process thereof, which relate to the field of glass products, and the production process comprises the steps of scrubbing flat glass by using a sodium hydroxide solution and a hydrochloric acid solution, then cleaning by using clear water, drying to obtain a glass substrate, scraping a heat insulation coating on one side surface of the glass substrate, then placing the glass substrate in a vacuum drying box for drying, curing to form a heat insulation coating, installing two glass substrates in an aluminum alloy frame, coating a sealant to seal the joint of the aluminum alloy frame and the glass substrate, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured; through using this energy-concerving and environment-protective type cavity glass, the thermal barrier coating of one side wherein is located outdoors, can obviously block solar energy's radiation, separation sunlight heat is to indoor transmission under the circumstances of guaranteeing the luminousness, and the thermal barrier coating of opposite side is located indoors, blocks indoor heat and to outdoor transmission, reduces the energy consumption of air conditioner control room temperature, reaches energy-concerving and environment-protective effect.)

1. The energy-saving environment-friendly hollow glass is characterized by comprising an aluminum alloy frame (100), a glass substrate (200) and a heat-insulating coating (300), wherein the aluminum alloy frame (100) is a rectangular frame, the glass substrate (200) is arranged on two sides of an inner cavity of the aluminum alloy frame (100), the heat-insulating coating (300) is arranged on the surface of one side of the glass substrate (200), and the heat-insulating coatings (300) on the two sides are far away from each other;

the energy-saving environment-friendly hollow glass is prepared by the following steps:

the method comprises the following steps: scrubbing the flat glass with a sodium hydroxide solution and a hydrochloric acid solution for 3-5 times respectively, then washing with clear water, and drying to obtain a glass substrate (200);

step two: coating a heat insulation coating on one side surface of a glass substrate (200) by scraping, then placing the glass substrate in a vacuum drying box, drying for 5-20min under the condition that the temperature is 100-120 ℃, and curing the heat insulation coating to form a heat insulation coating (300);

step three: installing the heat insulation coatings (300) on the two glass substrates (200) in the aluminum alloy frame (100) in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame (100) and the glass substrates (200), and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

2. The energy-saving environment-friendly hollow glass as claimed in claim 1, wherein the preparation process of the heat insulating coating is as follows:

a1: adding 1, 2, 3-trichlorobenzene and concentrated sulfuric acid into a three-neck flask provided with a stirrer, a condensation reflux pipe and a constant pressure dropping funnel, stirring for 30-50min under the conditions that the temperature is 70-80 ℃ and the stirring speed is 300-500r/min, cooling to 40-45 ℃ after 1, 2, 3-trichlorobenzene is completely dissolved, dropwise adding fuming nitric acid while stirring, controlling the dropwise adding speed to be 1 drop/s, stirring and reacting at constant temperature of 45-65 ℃ for 5-6h after the dropwise adding is finished, adding a reaction product into ice water after the reaction is finished, stirring and cooling to separate out crystals, carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the filter cake in a vacuum drying box, drying at 60-80 ℃ to constant weight to obtain an intermediate 1;

a2: adding the intermediate 1 and ethylene glycol into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing ammonia gas while stirring under the conditions that the temperature is 150-;

a3: adding the intermediate 2, N-dimethylformamide and 8% palladium-carbon into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing hydrogen while stirring under the conditions that the temperature is 95-110 ℃ and the stirring speed is 600-800r/min, maintaining the pressure in the reaction kettle at 1.5MPa, stirring for reacting for 8-10h, cooling a reaction product to room temperature after the reaction is finished, performing vacuum filtration, performing rotary evaporation on a filtrate to remove a solvent, and adding a rotary evaporation product into anhydrous methanol for recrystallization to obtain an intermediate 3;

a4: adding polytetramethylene ether glycol, toluene diisocyanate and dibutyltin dilaurate into a four-neck flask provided with a stirrer, a condensation reflux pipe, a constant-pressure dropping funnel and an air guide pipe, introducing nitrogen to replace air in the four-neck flask, stirring and reacting for 2-3h under the conditions that the temperature is 90-100 ℃ and the stirring speed is 450-550r/min, cooling to 40-50 ℃ after the reaction is finished, adding an intermediate 3, 2-dimethylolpropionic acid, continuously stirring and reacting for 6-8h under the condition that the temperature is increased to 70-75 ℃, cooling to 40-50 ℃, adding triethylamine, and continuously stirring and reacting for 30-50min to obtain an intermediate 4; then dropwise adding 3-aminopropyltriethoxysilane into the intermediate 4 while stirring, controlling the dropwise adding rate to be 1 drop/s, continuously stirring for 10-20min after the dropwise adding is finished, then dropwise adding deionized water while stirring under the condition that the stirring rate is 1000-1200r/min, controlling the dropwise adding rate to be 1-5 drops/s, and continuously stirring for 30-40min after the dropwise adding is finished to obtain a modified emulsion;

a5: mixing nano ATO powder with nano ATOTiO₂Uniformly mixing the powder, adding the powder into deionized water, and performing ultrasonic dispersion for 20-40min under the condition that the ultrasonic frequency is 55-75kHz to obtain nano slurry;

a6: adding the nano slurry into the modified emulsion, stirring and mixing for 20-30min at room temperature and at a stirring rate of 450-550r/min, then sequentially adding a wetting agent, a dispersing agent, a thickening agent, a film-forming aid and a flatting agent, continuously stirring and mixing for 1-2h, then adjusting the pH of the system to 7-8 by using ammonia water, adding an antifoaming agent, stirring and mixing for 60-100min at a stirring rate of 1000-1500r/min, and then ultrasonically dispersing for 20-40min at an ultrasonic frequency of 55-75kHz to obtain the heat-insulating coating.

3. The energy-saving environment-friendly hollow glass as claimed in claim 2, wherein the usage ratio of the 1, 2, 3-trichlorobenzene, the concentrated sulfuric acid and the fuming nitric acid in the step A1 is 0.2 mol: 100mL of: 20mL, wherein the mass fraction of the concentrated sulfuric acid is 98%, and the mass fraction of the fuming nitric acid is 95%.

4. The energy-saving and environment-friendly hollow glass as claimed in claim 2, wherein the dosage ratio of the intermediate 1 to the ethylene glycol in the step A2 is 0.2 mol: 100mL, and the introduction rate of the ammonia gas is 1.5-3.0L/min.

5. The energy-saving and environment-friendly hollow glass as claimed in claim 2, wherein the intermediate 2, the N, N-dimethylformamide and 8% palladium on carbon in the step A3 are used in a ratio of 10 g: 50mL of: 0.5g, and the introduction rate of the hydrogen is 2.0-3.0L/min.

6. The energy-saving and environment-friendly hollow glass according to claim 2, wherein the polytetramethylene ether glycol, toluene diisocyanate, dibutyltin dilaurate, intermediate 3, 2-dimethylolpropionic acid, triethylamine, 3-aminopropyltriethoxysilane and deionized water in the step A4 are used in an amount ratio of 0.1 mol: 0.15 mol: 0.5 g: 0.05 mol: 0.4 g: 0.7 g: 20 g: 50 mL.

7. The energy-saving and environment-friendly hollow glass as claimed in claim 2, wherein the nano ATO powder and nano TiO in step A5₂The using ratio of the powder to the deionized water is 15.0 g: 15.0 g: 150 mL.

8. The energy-saving environment-friendly hollow glass as claimed in claim 2, wherein the nano slurry, the modified emulsion, the wetting agent, the dispersing agent, the thickening agent, the film forming aid, the leveling agent and the defoaming agent in the step A6 are used in an amount ratio of 20-40 mL: 60-120 mL: 0.12-0.25 g: 0.35-0.60 g: 0.20-0.60 g: 0.45-0.80 g: 0.01-0.03 g: 0.01-0.05 g.

9. The production process of the energy-saving environment-friendly hollow glass as claimed in claim 1, characterized by comprising the following steps:

the method comprises the following steps: scrubbing the flat glass with a sodium hydroxide solution and a hydrochloric acid solution for 3-5 times respectively, then washing with clear water, and drying to obtain a glass substrate (200);

step two: coating a heat insulation coating on one side surface of a glass substrate (200) by scraping, then placing the glass substrate in a vacuum drying box, drying for 5-20min under the condition that the temperature is 100-120 ℃, and curing the heat insulation coating to form a heat insulation coating (300);

step three: installing the heat insulation coatings (300) on the two glass substrates (200) in the aluminum alloy frame (100) in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame (100) and the glass substrates (200), and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

Technical Field

The invention relates to the field of glass products, in particular to energy-saving environment-friendly hollow glass and a production process thereof.

Background

Glass is a cheap transparent material, is widely applied to the building and automobile industries as a transparent lighting material of doors and windows, and the high light transmittance of the glass meets the lighting requirement, but because the glass has poor heat insulation performance and poor heat preservation performance when being used as the doors and windows, on one hand, the glass can not well obstruct the inward conduction of external energy, and on the other hand, the glass can not well obstruct the outward dissipation of internal heat;

therefore, an energy-saving environment-friendly hollow glass and a production process thereof are needed to solve the problem of poor energy-saving performance of the existing glass for buildings.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide energy-saving environment-friendly hollow glass and a production process thereof: the energy-saving environment-friendly hollow glass is prepared by scrubbing flat glass with a sodium hydroxide solution and a hydrochloric acid solution, then washing with clear water, drying to obtain a glass substrate, scraping a heat insulation coating on one side surface of the glass substrate, then placing the glass substrate in a vacuum drying oven for drying, curing to form a heat insulation coating, installing the heat insulation coatings on the two glass substrates in an aluminum alloy frame in a direction away from each other, coating a sealant to seal the joint of the aluminum alloy frame and the glass substrate, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

The purpose of the invention can be realized by the following technical scheme:

the energy-saving environment-friendly hollow glass comprises an aluminum alloy frame, a glass substrate and heat insulation coatings, wherein the aluminum alloy frame is a rectangular frame, the glass substrate is arranged on two sides of an inner cavity of the aluminum alloy frame, the heat insulation coatings are arranged on the surfaces of one sides of the glass substrates, and the heat insulation coatings on the two sides are arranged away from each other;

the energy-saving environment-friendly hollow glass is prepared by the following steps:

the method comprises the following steps: scrubbing the flat glass with a sodium hydroxide solution and a hydrochloric acid solution for 3-5 times respectively, then cleaning with clear water, and drying to obtain a glass substrate;

step two: coating a heat insulation coating on one side surface of a glass substrate by scraping, then placing the glass substrate in a vacuum drying box, drying for 5-20min under the condition that the temperature is 100-120 ℃, and curing the heat insulation coating to form a heat insulation coating;

step three: installing the heat insulation coatings on the two glass substrates in the aluminum alloy frame in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame and the glass substrates, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

As a further scheme of the invention: the wetting agent is one of wetting agents BYK-187 and BYK-3400; the dispersing agent is sodium dodecyl sulfate; the thickening agent is fatty alcohol-polyoxyethylene ether sulfate; the film-forming assistant is film-forming assistant SG-505; the leveling agent is one of leveling agents BYK-350 and BYK-356; the defoaming agent is a mixture of a polysiloxane defoaming agent and polyether modified silicone oil in a mass ratio of 1: 1.

As a further scheme of the invention: the preparation process of the heat insulation coating is as follows:

a1: adding 1, 2, 3-trichlorobenzene and concentrated sulfuric acid into a three-neck flask provided with a stirrer, a condensation reflux pipe and a constant pressure dropping funnel, stirring for 30-50min under the conditions that the temperature is 70-80 ℃ and the stirring speed is 300-500r/min, cooling to 40-45 ℃ after 1, 2, 3-trichlorobenzene is completely dissolved, dropwise adding fuming nitric acid while stirring, controlling the dropwise adding speed to be 1 drop/s, stirring and reacting at constant temperature of 45-65 ℃ for 5-6h after the dropwise adding is finished, adding a reaction product into ice water after the reaction is finished, stirring and cooling to separate out crystals, carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the filter cake in a vacuum drying box, drying at 60-80 ℃ to constant weight to obtain an intermediate 1;

the reaction principle is as follows:

a2: adding the intermediate 1 and ethylene glycol into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing ammonia gas while stirring under the conditions that the temperature is 150-;

the reaction principle is as follows:

a3: adding the intermediate 2, N-dimethylformamide and 8% palladium-carbon into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing hydrogen while stirring under the conditions that the temperature is 95-110 ℃ and the stirring speed is 600-800r/min, maintaining the pressure in the reaction kettle at 1.5MPa, stirring for reacting for 8-10h, cooling a reaction product to room temperature after the reaction is finished, performing vacuum filtration, performing rotary evaporation on a filtrate to remove a solvent, and adding a rotary evaporation product into anhydrous methanol for recrystallization to obtain an intermediate 3;

the reaction principle is as follows:

a4: adding polytetramethylene ether glycol, toluene diisocyanate and dibutyltin dilaurate into a four-neck flask provided with a stirrer, a condensation reflux pipe, a constant-pressure dropping funnel and an air guide pipe, introducing nitrogen to replace air in the four-neck flask, stirring and reacting for 2-3h under the conditions that the temperature is 90-100 ℃ and the stirring speed is 450-550r/min, cooling to 40-50 ℃ after the reaction is finished, adding an intermediate 3, 2-dimethylolpropionic acid, continuously stirring and reacting for 6-8h under the condition that the temperature is increased to 70-75 ℃, cooling to 40-50 ℃, adding triethylamine, and continuously stirring and reacting for 30-50min to obtain an intermediate 4; then dropwise adding 3-aminopropyltriethoxysilane into the intermediate 4 while stirring, controlling the dropwise adding rate to be 1 drop/s, continuously stirring for 10-20min after the dropwise adding is finished, then dropwise adding deionized water while stirring under the condition that the stirring rate is 1000-1200r/min, controlling the dropwise adding rate to be 1-5 drops/s, and continuously stirring for 30-40min after the dropwise adding is finished to obtain a modified emulsion;

the reaction principle is as follows:

a5: mixing nanometer ATO powder with nanometer TiO₂Uniformly mixing the powder, adding the powder into deionized water, and performing ultrasonic dispersion for 20-40min under the condition that the ultrasonic frequency is 55-75kHz to obtain nano slurry;

a6: adding the nano slurry into the modified emulsion, stirring and mixing for 20-30min at room temperature and at a stirring rate of 450-550r/min, then sequentially adding a wetting agent, a dispersing agent, a thickening agent, a film-forming aid and a flatting agent, continuously stirring and mixing for 1-2h, then adjusting the pH of the system to 7-8 by using ammonia water, adding an antifoaming agent, stirring and mixing for 60-100min at a stirring rate of 1000-1500r/min, and then ultrasonically dispersing for 20-40min at an ultrasonic frequency of 55-75kHz to obtain the heat-insulating coating.

As a further scheme of the invention: the dosage ratio of the 1, 2, 3-trichlorobenzene, the concentrated sulfuric acid and the fuming nitric acid in the step A1 is 0.2 mol: 100mL of: 20mL, wherein the mass fraction of the concentrated sulfuric acid is 98%, and the mass fraction of the fuming nitric acid is 95%.

As a further scheme of the invention: the dosage ratio of the intermediate 1 to the ethylene glycol in the step A2 is 0.2 mol: 100mL, and the introduction rate of the ammonia gas is 1.5-3.0L/min.

As a further scheme of the invention: the intermediate 2, N-dimethylformamide and 8% palladium on carbon in step a3 were used in a ratio of 10 g: 50mL of: 0.5g, and the introduction rate of the hydrogen is 2.0-3.0L/min.

As a further scheme of the invention: the dosage ratio of the polytetramethylene ether glycol, the toluene diisocyanate, the dibutyltin dilaurate, the intermediate 3, the 2, 2-dimethylolpropionic acid, the triethylamine, the 3-aminopropyltriethoxysilane and the deionized water in the step A4 is 0.1 mol: 0.15 mol: 0.5 g: 0.05 mol: 0.4 g: 0.7 g: 20 g: 50 mL.

As a further scheme of the invention: the nanometer ATO powder and the nanometer TiO in the step A5₂The using ratio of the powder to the deionized water is 15.0 g: 15.0 g: 150 mL.

As a further scheme of the invention: the dosage ratio of the nano slurry, the modified emulsion, the wetting agent, the dispersing agent, the thickening agent, the film forming assistant, the flatting agent and the defoaming agent in the step A6 is 20-40 mL: 60-120 mL: 0.12-0.25 g: 0.35-0.60 g: 0.20-0.60 g: 0.45-0.80 g: 0.01-0.03 g: 0.01-0.05 g.

The production process of the energy-saving environment-friendly hollow glass comprises the following steps:

the method comprises the following steps: scrubbing the flat glass for 3-5 times by using a sodium hydroxide solution with the mass fraction of 5% and a hydrochloric acid solution with the mass fraction of 10% respectively, then cleaning by using clear water, and drying to obtain a glass substrate;

step two: coating a heat insulation coating on one side surface of a glass substrate by scraping, then placing the glass substrate in a vacuum drying box, drying for 5-20min under the condition that the temperature is 100-120 ℃, and curing the heat insulation coating to form a heat insulation coating;

step three: installing the heat insulation coatings on the two glass substrates in the aluminum alloy frame in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame and the glass substrates, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

The invention has the beneficial effects that:

the invention relates to energy-saving environment-friendly hollow glass and a production process thereof.A flat glass is scrubbed by a sodium hydroxide solution and a hydrochloric acid solution, then is cleaned by clear water and dried to obtain a glass substrate, a heat insulation coating is scraped on one side surface of the glass substrate and then is placed in a vacuum drying box for drying, a heat insulation coating is formed by curing, the heat insulation coatings on the two glass substrates are arranged in an aluminum alloy frame in a direction away from each other, a sealant is coated to seal the joint of the aluminum alloy frame and the glass substrate, and the energy-saving environment-friendly hollow glass is obtained after the sealant is completely cured; by using the energy-saving environment-friendly hollow glass, the heat insulation coating on one side is positioned outdoors, so that the radiation of solar energy can be obviously blocked, the heat of sunlight is blocked from being transferred indoors under the condition of ensuring the light transmittance, the heat insulation coating on the other side is positioned indoors, the heat of the indoor is blocked from being transferred outdoors, the energy consumption of an air conditioner for controlling the room temperature is reduced, and the effects of saving energy and protecting environment are achieved;

the preparation method of the energy-saving environment-friendly hollow glass also comprises the steps of nitrifying 1, 2, 3-trichlorobenzene to form an intermediate 1, carrying out ammonolysis reaction on the intermediate 1 to generate an intermediate 2, carrying out hydrogenolysis reaction on the intermediate 2 to generate an intermediate 3, carrying out condensation reaction on polytetramethylene ether glycol and toluene diisocyanate, carrying out crosslinking on the intermediate 3 to generate an intermediate 4, forming a network structure, improving the glossiness, hardness, heat resistance, water resistance, acid and alkali resistance of the intermediate 3, capping the intermediate 4 by using 3-aminopropyltriethoxysilane, and carrying out end capping on nano ATO powder and nano TiO powder₂The powder can effectively insulate heat of sunlight under the condition of ensuring light transmittance, the powder and the silicon dioxide are compounded to play a role in enhancing, and silanol is formed by hydrolysis of a silane structure of 3-aminopropyltriethoxysilane and can be mixed with nano ATO powder and nano TiO powder₂Chemical bond connection of powder to avoid nano ATO powder and nano TiO₂The powder is agglomerated to ensure the nano ATO powder and the nano TiO₂The powder is uniformly dispersed in the heat insulation coating, the heat insulation effect is fully exerted, and the coupling force between the powder and the heat insulation coating is improved, so that the mechanical property of the hollow glass is improved, the prepared hollow glass has good light transmittance and good heat insulation property, and good section is achievedCan protect the environment.

Drawings

The invention is further described below with reference to the accompanying drawings;

FIG. 1 is a schematic structural view of an energy-saving and environment-friendly hollow glass according to the present invention;

in the figure: 100. an aluminum alloy frame; 200. a glass substrate; 300. and (4) thermal barrier coating.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1, the present embodiment is an energy-saving and environment-friendly hollow glass, including an aluminum alloy frame 100, a glass substrate 200, and a thermal insulation coating 300, wherein the aluminum alloy frame 100 is a rectangular frame, the glass substrate 200 is mounted on both sides of an inner cavity of the aluminum alloy frame 100, the thermal insulation coating 300 is disposed on a surface of one side of the glass substrate 200, and the thermal insulation coatings 300 on both sides are disposed away from each other.

Example 2:

the embodiment is a preparation method of a heat insulation coating, which comprises the following steps:

a1: adding 0.2mol of 1, 2, 3-trichlorobenzene and 100mL of concentrated sulfuric acid with the mass fraction of 98% into a three-neck flask provided with a stirrer, a condensation reflux pipe and a constant-pressure dropping funnel, stirring for 30min at the temperature of 70 ℃ and the stirring speed of 300r/min, cooling to 40 ℃ after 1, 2, 3-trichlorobenzene is completely dissolved, dropwise adding 20mL of fuming nitric acid with the mass fraction of 95% while stirring, controlling the dropwise adding speed to be 1 drop/s, stirring at constant temperature at the temperature of 45 ℃ for reaction for 5h after the dropwise adding is finished, adding a reaction product into ice water after the reaction is finished, stirring and cooling to separate out crystals, carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the filter cake into a vacuum drying box, and drying at the temperature of 60 ℃ to constant weight to obtain an intermediate 1;

a2: adding 0.2mol of intermediate 1 and 100mL of ethylene glycol into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing ammonia gas at the introduction rate of 1.5L/min while stirring at the temperature of 150 ℃ and the stirring rate of 600r/min, maintaining the pressure in the reaction kettle at 1.0MPa, stirring for 8 hours, cooling a reaction product to room temperature after the reaction is finished, carrying out vacuum filtration, and collecting a filter cake to obtain an intermediate 2;

a3: adding 10g of intermediate 2, 50mLN, N-dimethylformamide and 0.5g of 8% palladium carbon into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing hydrogen at the introduction rate of 2.0L/min while stirring at the temperature of 95 ℃ and the stirring rate of 600r/min, maintaining the pressure in the reaction kettle at 1.5MPa, stirring for 8 hours, cooling a reaction product to room temperature after the reaction is finished, carrying out vacuum filtration, carrying out rotary evaporation on a filtrate to remove a solvent, adding the rotary evaporation product into anhydrous methanol, and recrystallizing to obtain an intermediate 3;

a4: adding 0.1mol of polytetramethylene ether glycol, 0.15mol of toluene diisocyanate and 0.5g of dibutyltin dilaurate into a four-neck flask provided with a stirrer, a reflux condenser, a constant-pressure dropping funnel and an air guide tube, introducing nitrogen to replace air in the four-neck flask, stirring and reacting for 2h under the conditions that the temperature is 90 ℃ and the stirring speed is 450r/min, cooling to 40 ℃ after the reaction is finished, adding 0.05mol of intermediate 3, 0.4g of 2 and 2-dimethylolpropionic acid, continuously stirring and reacting for 6h under the condition that the temperature is raised to 70 ℃, cooling to 40 ℃, adding 0.7g of triethylamine, and continuously stirring and reacting for 30min to obtain an intermediate 4; then, dropwise adding 20g of 3-aminopropyltriethoxysilane into the intermediate 4 while stirring, controlling the dropwise adding rate to be 1 drop/s, continuously stirring for 10min after the dropwise adding is finished, then gradually adding 50mL of deionized water while stirring under the condition that the stirring rate is 1000r/min, controlling the dropwise adding rate to be 1 drop/s, and continuously stirring for 30min after the dropwise adding is finished to obtain a modified emulsion;

a5: mixing 15.0g of nano ATO powder and 15.0g of nano TiO₂The powder is mixed evenly and added to 150mLIn ionized water, performing ultrasonic dispersion for 20min under the condition that the ultrasonic frequency is 55kHz to obtain nano slurry;

a6: adding 20mL of nano slurry into 60mL of modified emulsion, stirring and mixing for 20min at room temperature and at a stirring speed of 450r/min, then sequentially adding 0.12g of wetting agent, 0.35g of dispersing agent, 0.20g of thickening agent, 0.45g of film-forming aid and 0.01g of flatting agent, continuously stirring and mixing for 1h, then adjusting the pH of the system to 7 by using ammonia water, adding 0.01g of defoaming agent, stirring and mixing for 60min at a stirring speed of 1000r/min, and then ultrasonically dispersing for 20min at an ultrasonic frequency of 55kHz to obtain the heat-insulating coating.

Example 3:

the embodiment is a preparation method of a heat insulation coating, which comprises the following steps:

a1: adding 0.2mol of 1, 2, 3-trichlorobenzene and 100mL of concentrated sulfuric acid with the mass fraction of 98% into a three-neck flask provided with a stirrer, a condensation reflux pipe and a constant-pressure dropping funnel, stirring for 50min at the temperature of 80 ℃ and the stirring speed of 500r/min, cooling to 45 ℃ after 1, 2, 3-trichlorobenzene is completely dissolved, dropwise adding 20mL of fuming nitric acid with the mass fraction of 95% while stirring, controlling the dropwise adding speed to be 1 drop/s, stirring and reacting at the constant temperature of 65 ℃ for 6h after the dropwise adding is finished, adding a reaction product into ice water after the reaction is finished, stirring and cooling to separate out crystals, carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the filter cake into a vacuum drying box, and drying to constant weight at the temperature of 80 ℃ to obtain an intermediate 1;

a2: adding 0.2mol of intermediate 1 and 100mL of ethylene glycol into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing ammonia gas at the introduction rate of 3.0L/min while stirring at the temperature of 160 ℃ and the stirring rate of 800r/min, maintaining the pressure in the reaction kettle at 1.0MPa, stirring for 10 hours, cooling a reaction product to room temperature after the reaction is finished, carrying out vacuum filtration, and collecting a filter cake to obtain an intermediate 2;

a3: adding 10g of intermediate 2, 50mLN, N-dimethylformamide and 0.5g of 8% palladium carbon into a reaction kettle, introducing nitrogen to replace air in the reaction kettle, introducing hydrogen at the introduction rate of 3.0L/min while stirring at the temperature of 110 ℃ and the stirring rate of 800r/min, maintaining the pressure in the reaction kettle at 1.5MPa, stirring for 10 hours, cooling a reaction product to room temperature after the reaction is finished, carrying out vacuum filtration, carrying out rotary evaporation on a filtrate to remove a solvent, adding the rotary evaporation product into anhydrous methanol, and recrystallizing to obtain an intermediate 3;

a4: adding 0.1mol of polytetramethylene ether glycol, 0.15mol of toluene diisocyanate and 0.5g of dibutyltin dilaurate into a four-neck flask provided with a stirrer, a reflux condenser, a constant-pressure dropping funnel and an air guide tube, introducing nitrogen to replace air in the four-neck flask, stirring and reacting for 3h under the conditions that the temperature is 100 ℃ and the stirring speed is 550r/min, cooling to 50 ℃ after the reaction is finished, adding 0.05mol of intermediate 3, 0.4g of 2 and 2-dimethylolpropionic acid, continuously stirring and reacting for 8h under the condition that the temperature is 75 ℃, cooling to 50 ℃, adding 0.7g of triethylamine, and continuously stirring and reacting for 50min to obtain an intermediate 4; then, dropwise adding 20g of 3-aminopropyltriethoxysilane into the intermediate 4 while stirring, controlling the dropwise adding rate to be 1 drop/s, continuously stirring for 20min after the dropwise adding is finished, then gradually adding 50mL of deionized water while stirring under the condition that the stirring rate is 1200r/min, controlling the dropwise adding rate to be 5 drops/s, and continuously stirring for 40min after the dropwise adding is finished to obtain a modified emulsion;

a5: mixing 15.0g of nano ATO powder and 15.0g of nano TiO₂Uniformly mixing the powder, adding the powder into 150mL of deionized water, and performing ultrasonic dispersion for 40min under the condition that the ultrasonic frequency is 75kHz to obtain nano slurry;

a6: adding 40mL of nano slurry into 120mL of modified emulsion, stirring and mixing for 30min at room temperature and at a stirring speed of 550r/min, then sequentially adding 0.25g of wetting agent, 0.60g of dispersing agent, 0.60g of thickening agent, 0.80g of film-forming aid and 0.03g of flatting agent, continuously stirring and mixing for 2h, then adjusting the pH of the system to 8 by using ammonia water, adding 0.05g of defoaming agent, stirring and mixing for 100min at a stirring speed of 1500r/min, and then ultrasonically dispersing for 40min at an ultrasonic frequency of 75kHz to obtain the heat-insulating coating.

Example 4:

referring to fig. 1, the present embodiment is a process for producing energy-saving and environment-friendly hollow glass, comprising the following steps:

the method comprises the following steps: scrubbing the flat glass for 3 times by using a sodium hydroxide solution with the mass fraction of 5% and a hydrochloric acid solution with the mass fraction of 10% respectively, then cleaning by using clear water, and drying to obtain a glass substrate 200;

step two: the thermal barrier coating from example 1 was applied to one side of the glass substrate 200, and then dried in a vacuum oven at 100 ℃ for 5min, and the thermal barrier coating was cured to form a thermal barrier coating 300;

step three: installing the heat insulation coatings 300 on the two glass substrates 200 in the aluminum alloy frame 100 in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame 100 and the glass substrate 200, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

Example 5:

referring to fig. 1, the present embodiment is a process for producing energy-saving and environment-friendly hollow glass, comprising the following steps:

the method comprises the following steps: respectively scrubbing the flat glass for 5 times by using a sodium hydroxide solution with the mass fraction of 5% and a hydrochloric acid solution with the mass fraction of 10%, then cleaning by using clear water, and drying to obtain a glass substrate 200;

step two: the thermal barrier coating from example 2 was applied to one side of the glass substrate 200, and then dried in a vacuum oven at 120 ℃ for 20min, and the thermal barrier coating was cured to form a thermal barrier coating 300;

step three: installing the heat insulation coatings 300 on the two glass substrates 200 in the aluminum alloy frame 100 in the direction away from each other, coating the sealant to seal the joint of the aluminum alloy frame 100 and the glass substrate 200, and obtaining the energy-saving environment-friendly hollow glass after the sealant is completely cured.

Comparative example 1:

comparative example 1 differs from example 5 in that no thermal barrier coating was used.

Comparative example 2:

comparative example 2 differs from example 5 in that the nano glass thermal barrier coating of application No. CN201010237787.5 was used instead of the thermal barrier coating of the present invention.

The insulating properties of the hollow glasses of examples 4 to 5 and comparative examples 1 to 2 were tested according to the test method of GB/T2680-1994 (determination of visible light transmittance, direct solar transmittance, total solar transmittance, ultraviolet transmittance and related window glass parameters of architectural glass). The detection results are as follows:

referring to the data in the table, according to the embodiment and the comparative example 1, it can be known that the heat insulation performance of the hollow glass after the heat insulation coating 300 is formed by using the heat insulation coating is obviously improved, and then the environmental protection and energy saving performance of the hollow glass is further improved, and according to the embodiment and the comparative example 2, the heat insulation coating of the present invention is more excellent than the nano glass heat insulation coating in the prior art, and the heat insulation performance and the environmental protection and energy saving performance of the prepared hollow glass are better.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.