High-performance fireproof glass for building based on nanometer silicon liquid and preparation method thereof

Abstract

The application belongs to the technical field of glass product manufacturing, and specifically provides high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof. The fireproof glass comprises two layers of glass and a fireproof material layer arranged in the glass interlayer. The fireproof material layer is prepared from the following raw materials in parts by weight: 20-35 parts of nano-silicon liquid, 10-15 parts of modified polydimethylsiloxane, 8-16 parts of alkaline solution, 4-10 parts of polyol, 3-8 parts of carbonization agent, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of corrosion inhibitor, 0.1-0.4 parts of curing agent, 0.1-0.3 parts of leveling agent, 0.05-0.2 parts of defoaming agent, and 30-50 parts of deionized water. The nano-silicon liquid has a solid content of 30-40%. The fireproof glass has excellent fireproof performance, and has good light transmittance and impact strength.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass product manufacturing, and particularly relates to high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof. BACKGROUND

[0002] With the increasing requirements of the building industry on fire safety, fireproof windows are increasingly widely used in buildings. As a kind of window with fireproof function, fireproof windows are mainly used for fireproof separation of buildings, and the structure thereof is usually composed of fireproof glass and a fireproof frame body. The fireproof glass, as a key part of the fireproof window, is composed of glass and a fireproof material layer in the interlayer, and the function thereof is to prevent the spread of fire and high-temperature smoke through the glass to other areas within a certain time when a fire occurs.

[0003] Fireproof glass is mainly divided into two types of composite fireproof glass and single-piece fireproof glass. The composite fireproof glass is composed of two or more layers of glass original pieces and one or more layers of fireproof material layers. At present, the fireproof glass based on nano-silicon liquid occupies an important position in the fireproof glass industry due to its excellent heat insulation performance. When the fireproof glass is subjected to high temperature, the fireproof material layer will quickly foam, expand and spread, thereby preventing the spread of fire, however, the fireproof material layer may have the problems of soft texture and low impact strength, which can easily cause glass breakage and cause danger.

[0004] Chinese patent CN 111334195 B discloses a fireproof liquid, a preparation method thereof and fireproof glass; the fireproof liquid comprises the following components in a mass percentage of 100%: fumed silica powder 45-50%, alkaline solution 15-25%, leveling agent 2-5%, defoaming agent 0.5-2%, stabilizer 1-2%, preservative 0.5-2% and deionized water in excess; the composition of the fireproof liquid is simple, the cost is low, the appearance quality of the prepared fireproof glass is high, and the light transmittance reaches more than 85%, however, it lacks a cross-linking component, resulting in low impact strength of the fireproof material layer.

[0005] Therefore, there is an urgent need for a fireproof glass which not only has good fireproof property and light transmittance, but also has good impact strength. SUMMARY

[0006] In view of the existing technical problems, the purpose of the present application is to provide a high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof. The fireproof glass of the present application has excellent fireproof performance, and good light transmittance and impact strength.

[0007] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0008] The application provides a high-performance building fireproof glass based on nano-silicon liquid, which comprises two layers of glass and a fireproof material layer arranged between the glass layers.

[0009] The reaction mechanism and effect of the application are as follows:

[0010] 1. The polydimethylsiloxane has good thermal stability, so that the fireproof glass can effectively play a fireproof role in a high-temperature environment. The addition of the polydimethylsiloxane can chemically react with other components in the raw materials, thereby constructing a crosslinked network structure. However, the dispersing performance of the polydimethylsiloxane in the aqueous solution is poor, and the compatibility is insufficient, which will negatively affect the impact strength and visible light transmittance of the fireproof glass.

[0011] On one hand, the polydimethylsiloxane is preliminarily modified by 3-chloro-2-hydroxypropane sodium sulfonate. The 3-chloro-2-hydroxypropane sodium sulfonate can react with the polydimethylsiloxane treated by oxygen plasma in an alkaline environment. The sulfonic acid group introduced into the polydimethylsiloxane improves the hydrophilicity of the polydimethylsiloxane, and further improves the dispersibility and compatibility of the polydimethylsiloxane in the system, and further improves the storage stability of the raw materials of the fireproof material layer. On the other hand, the polydimethylsiloxane is modified by an allyl polyoxyethylene ether and 1,3-divinyl tetramethyl disiloxane modifier, more hydrophilic groups and active hydrogen groups are introduced, the dispersibility of the polydimethylsiloxane in the system is improved, and the network crosslinked structure has better stability, and the fireproof glass has excellent impact strength and light transmittance.

[0012] 2. The crosslinking resin of the application is composed of a water-based polyester resin and a water-based epoxy resin. The crosslinking resin has multiple polar groups and has a strong adhesion effect on the surface of the glass, and can improve the bonding strength of the fireproof material layer and the glass. Meanwhile, the crosslinking resin can crosslink with the modified polydimethylsiloxane having active hydrogen to form a network structure, improve the stability of the network structure, and further improve the impact strength of the fireproof glass.

[0013] In some embodiments, the alkaline solution is a sodium hydroxide aqueous solution and / or a potassium hydroxide aqueous solution, and the mass concentration is 50%-80%.

[0014] In some embodiments, the method for preparing the modified polydimethylsiloxane comprises the following steps:

[0015] Q1. subjecting polydimethylsiloxane to oxygen plasma treatment to obtain a hydroxylated polydimethylsiloxane;

[0016] Q2. mixing the hydroxylated polydimethylsiloxane obtained in step Q1 and sodium 3-chloro-2-hydroxypropane sulfonate, heating to 40-60℃, adding sodium hydroxide aqueous solution while stirring, and reacting for 3-5h to obtain a reaction product;

[0017] Q3. mixing the reaction product obtained in step Q2, allyl polyoxyethylene ether, 1,3-divinyltetramethyldisiloxane, and isopropyl alcohol, heating to 70-85℃, adding sulfuric acid while stirring, and raising the temperature to 100-110℃ to react for 3-4h, and drying to obtain a modified polydimethylsiloxane.

[0018] In some embodiments, the specific procedure for the oxygen plasma treatment in step Q1 is as follows: subjecting polydimethylsiloxane to ultraviolet light with a wavelength of 320-400nm in an oxygen environment for 60-90min, then pouring it into a 30wt%-35wt% ethanol aqueous solution for 30-45min, and then removing it to obtain a hydroxylated polydimethylsiloxane.

[0019] In some embodiments, the mass ratio of the hydroxylated polydimethylsiloxane to sodium 3-chloro-2-hydroxypropane sulfonate in step Q2 is 1:(3-4.5).

[0020] In some embodiments, the mass ratio of the reaction product to allyl polyoxyethylene ether to 1,3-divinyltetramethyldisiloxane in step Q3 is 1:(2.5-4):(0.5-0.9).

[0021] In some embodiments, the crosslinking resin is a combination of a water-based polyester resin and a water-based epoxy resin.

[0022] Preferably, the mass ratio of the water-based polyester resin to the water-based epoxy resin is (1.5-3):1.

[0023] Further preferably, the dynamic viscosity of the water-based polyester resin at 25℃ is 70-200mPa·s.

[0024] Further preferably, the dynamic viscosity of the water-based epoxy resin at 25℃ is 500-1000mPa·s.

[0025] In some embodiments, the charring agent is any one or more of sorbitol, disaccharide, fructose, and glucose.

[0026] In some embodiments, the thickness of the glass is 3-8 mm, and the thickness of the fireproof material layer is 2-5 mm.

[0027] In some embodiments, the polyol is any one or more of glycerol, propylene glycol, and pentaerythritol.

[0028] In some embodiments, the heat-resistant stabilizer is any one or more of sodium borate, boric acid, and borax.

[0029] In some embodiments, the corrosion inhibitor is potassium tripolyphosphate and / or sodium polyphosphate.

[0030] In some embodiments, the curing agent is sodium fluorosilicate and / or potassium fluorosilicate.

[0031] In some embodiments, the leveling agent is a polyether leveling agent.

[0032] In some embodiments, the defoaming agent is a polyether-modified silicone defoaming agent.

[0033] The present application also provides a preparation method of the high-performance fireproof glass for buildings based on the nano-silicon liquid.

[0034] S1. Mix the nano-silicon liquid, the alkaline solution, and the modified polydimethylsiloxane, stir, and obtain a mixed solution;

[0035] S2. Mix the mixed solution obtained in step S1, the polyol, the carbon-forming agent, the heat-resistant stabilizer, the cross-linking resin, the corrosion inhibitor, the curing agent, the leveling agent, the defoaming agent, and deionized water, heat to 40-50°C for reaction, stir, stand, filter, and obtain a fireproof liquid;

[0036] S3. Pour the fireproof liquid obtained in step S2 into the glass interlayer, solidify into a gel, and then form a fireproof material layer. Finally, seal the pouring port with a glass strip and transparent fire-retardant glue to obtain the fireproof glass.

[0037] Compared with the prior art, the present application has the following advantages:

[0038] 1. The fireproof glass of the present application has excellent fireproof performance, and has good light transmittance and impact strength.

[0039] 2. The present application improves the hydrophilicity by using the modified polydimethylsiloxane, improves the dispersibility and compatibility of the polydimethylsiloxane in the system, and at the same time makes the network structure have better stability, thereby ensuring that the fireproof glass has excellent impact strength and light transmittance.

[0040] 3. The cross-linked resin of the present application is composed of a specific mass ratio of water-based polyester resin and water-based epoxy resin, has multiple polar groups, improves the adhesion to the glass surface, and improves the bonding strength between the fireproof material layer and the glass; at the same time, the cross-linked resin can cross-link with the modified polydimethylsiloxane having active hydrogen, improves the stability of the network structure formation, and further improves the impact strength of the fireproof glass. DETAILED DESCRIPTION

[0041] The present application will be described below in conjunction with specific embodiments. It should be noted that the following examples are examples of the present application and are only used to illustrate the present application, but not to limit the present application. Other combinations and various modifications within the concept of the present application can be made without departing from the spirit or scope of the present application.

[0042] Each fireproof glass was prepared according to the ratio and preparation method of each raw material specified in the following examples and comparative examples.

[0043] In order to facilitate the implementation of the present application by those skilled in the art, the manufacturers of some raw materials of the examples and comparative examples are described as follows:

[0044] Polyether leveling agent: purchased from Shanghai Zhenli Network Technology Co., Ltd., model WE-3322;

[0045] Polyether modified silicone defoamer: purchased from Guangdong Zhongke Hongtai New Material Co., Ltd., model B-0518;

[0046] Water-based polyester resin: purchased from Can Sen New Material (Shenzhen) Co., Ltd., model CS-2181W, dynamic viscosity at 25℃ is 100 mPa·s;

[0047] Water-based epoxy resin: purchased from Shanghai Yantian E-commerce Co., Ltd., brand EP137, dynamic viscosity at 25℃ is 800 mPa·s;

[0048] Polydimethylsiloxane: purchased from Shandong Guniang Chemical Co., Ltd., model JN-201;

[0049] Nano-silicon liquid: purchased from Shuangchen International Trade (Dalian) Co., Ltd., particle size is 80 nm, solid content is 35%;

[0050] Allyl polyoxyethylene ether: purchased from Haian Petrochemical Factory in Jiangsu Province, model APEG-1000;

[0051] Sulfuric acid: 98 wt%;

[0052] Other raw materials are not specially mentioned and can be purchased from the market.

[0053] Preparation Example 1

[0054] A method for preparing modified polydimethylsiloxane A comprises the following steps:

[0055] Q1. Subjecting polydimethylsiloxane to oxygen plasma treatment to obtain hydroxylated polydimethylsiloxane;

[0056] Q2. Mixing 300 g of the hydroxylated polydimethylsiloxane obtained in step Q1, 1125 g of sodium 3-chloro-2-hydroxypropane sulfonate, heating to 50°C, and adding 100 mL of a 30 wt% sodium hydroxide aqueous solution while stirring, and reacting for 4 h to obtain a reaction product;

[0057] Q3. Mixing 200 g of the reaction product obtained in step Q2, 650 g of allyl polyoxyethylene ether, 140 g of 1,3-divinyltetramethyldisiloxane, and 1000 mL of isopropyl alcohol, heating to 80°C, adding 80 mL of sulfuric acid while stirring, and raising the temperature to 105°C to react for 3.5 h, and removing the isopropyl alcohol by drying in a rotary evaporator to obtain modified polydimethylsiloxane A;

[0058] The specific procedure for the oxygen plasma treatment in step Q1 is as follows: the polydimethylsiloxane is placed in an oxygen environment, and the oxygen is irradiated with ultraviolet light of a wavelength of 350 nm to make the oxygen generate oxygen-rich groups, the irradiation time is 70 min, then it is immersed in a 30 wt% ethanol aqueous solution for 35 min and taken out to obtain the hydroxylated polydimethylsiloxane.

[0059] Preparation Example 2

[0060] A method for preparing modified polydimethylsiloxane B is the same as in Preparation Example 1, except that the amount of sodium 3-chloro-2-hydroxypropane sulfonate added in step Q2 is 810 g.

[0061] Preparation Example 3

[0062] A method for preparing modified polydimethylsiloxane C is the same as in Preparation Example 1, except that the amount of allyl polyoxyethylene ether added in step Q3 is 440 g.

[0063] Preparation Example 4

[0064] A method for preparing modified polydimethylsiloxane D is the same as in Preparation Example 1, except that the amount of 1,3-divinyltetramethyldisiloxane added in step Q3 is 80 g.

[0065] Example 1

[0066] A high-performance building fireproof glass based on nano-silicon liquid, the fireproof glass comprises two layers of glass and a fireproof material layer between the glass interlayers; the fireproof material layer is prepared from the following raw materials by weight: 28 parts of nano-silicon liquid, 12 parts of 60wt% potassium hydroxide aqueous solution, 12.5 parts of modified polydimethylsiloxane A, 7 parts of pentaerythritol, 5.5 parts of sorbitol, 4 parts of sodium borate, 3 parts of crosslinking resin, 1.5 parts of potassium tripolyphosphate, 0.25 parts of sodium fluorosilicate, 0.2 parts of polyether leveling agent, 0.12 parts of polyether modified silicone defoamer, and 40 parts of deionized water; wherein,

[0067] The crosslinking resin is a combination of water-based polyester resin and water-based epoxy resin, and the mass ratio of the two is 2.2:1.

[0068] The preparation method of the fireproof glass of the embodiment comprises the following steps:

[0069] S1. Mix the nano-silicon liquid, 60wt% potassium hydroxide aqueous solution and modified polydimethylsiloxane A, stir for 3h to obtain a mixed solution;

[0070] S2. Mix the mixed solution obtained in step S1, pentaerythritol, sorbitol, sodium borate, crosslinking resin, potassium tripolyphosphate, sodium fluorosilicate, polyether leveling agent, polyether modified silicone defoamer and deionized water, heat to 45℃ and react, stir for 6h, stand for 12h, filter to obtain a fireproof liquid;

[0071] S3. Pour the fireproof liquid obtained in step S2 into the interlayer of tempered glass, form a fireproof material layer after curing to 80℃, and then seal the pouring port with glass strips and transparent fire-retardant glue to obtain a fireproof glass; wherein the thickness of each layer of tempered glass is 5mm, and the thickness of each layer of fireproof material layer is 3.5mm.

[0072] Example 2

[0073] A high-performance building fireproof glass based on nano-silicon liquid, the fireproof glass comprises two layers of glass and a fireproof material layer between the glass interlayers; the fireproof material layer is prepared from the following raw materials by weight: 28 parts of nano-silicon liquid, 12 parts of 60wt% potassium hydroxide aqueous solution, 12.5 parts of modified polydimethylsiloxane A, 7 parts of pentaerythritol, 5.5 parts of sorbitol, 4 parts of sodium borate, 3 parts of crosslinking resin, 1.5 parts of potassium tripolyphosphate, 0.25 parts of sodium fluorosilicate, 0.2 parts of polyether leveling agent, 0.12 parts of polyether modified silicone defoamer, and 40 parts of deionized water; wherein,

[0074] The crosslinking resin is a combination of water-based polyester resin and water-based epoxy resin, and the mass ratio of the two is 2.2:1.

[0075] The preparation method of the fireproof glass of the embodiment comprises the following steps:

[0076] S1. Mix the nanometer silicon liquid, 80wt% potassium hydroxide aqueous solution and modified polydimethylsiloxane A, stir for 3h to obtain a mixed solution;

[0077] S2. Mix the mixed solution obtained in step S1, pentaerythritol, sorbitol, sodium borate, crosslinking resin, potassium tripolyphosphate, sodium fluorosilicate, polyether leveling agent, polyether modified silicone defoamer and deionized water, heat to 40℃ for reaction, stir for 7h, stand for 12h, filter to obtain a fireproof liquid;

[0078] S3. Pour the fireproof liquid obtained in step S2 into the tempered glass interlayer, form a fireproof material layer after curing to 80℃, then seal the pouring port with a glass strip and transparent fire-retardant glue to obtain the fireproof glass; wherein the thickness of each layer of tempered glass is 5mm, and the thickness of each layer of fireproof material layer is 3.5mm.

[0079] Example 3

[0080] A high-performance fireproof glass for building based on nanometer silicon liquid, the fireproof glass comprises two layers of glass and a fireproof material layer arranged in the glass interlayer; the preparation of the fireproof material layer comprises the following raw materials in parts by weight: nanometer silicon liquid 35 parts, 50wt% potassium hydroxide aqueous solution 16 parts, modified polydimethylsiloxane A 15 parts, pentaerythritol 10 parts, sorbitol 8 parts, sodium borate 6 parts, crosslinking resin 4 parts, potassium tripolyphosphate 2 parts, sodium fluorosilicate 0.4 parts, polyether leveling agent 0.3 parts, polyether modified silicone defoamer 0.2 parts, and deionized water 50 parts; wherein,

[0081] The crosslinking resin is a combination of water-based polyester resin and water-based epoxy resin, and the mass ratio of the two is 3:1.

[0082] The preparation method of the fireproof glass of the embodiment comprises the following steps:

[0083] S1. Mix the nanometer silicon liquid, 50wt% potassium hydroxide aqueous solution and modified polydimethylsiloxane A, stir for 3h to obtain a mixed solution;

[0084] S2. Mix the mixed solution obtained in step S1, pentaerythritol, sorbitol, sodium borate, crosslinking resin, potassium tripolyphosphate, sodium fluorosilicate, polyether leveling agent, polyether modified silicone defoamer and deionized water, heat to 50℃ for reaction, stir for 5h, stand for 12h, filter to obtain a fireproof liquid;

[0085] S3. The fireproof liquid obtained in step S2 is filled into the tempered glass interlayer, and after curing into a gel at 80℃, a fireproof material layer is formed, and then a glass strip and transparent fire-retardant glue are used to seal the grouting port to obtain fireproof glass; wherein the thickness of each layer of tempered glass is 5mm, and the thickness of each layer of fireproof material layer is 3.5mm.

[0086] Example 4

[0087] A high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof, the specific implementation manner is the same as that of example 1, except that an equal amount of modified polydimethylsiloxane B is used to replace modified polydimethylsiloxane A.

[0088] Example 5

[0089] A high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof, the specific implementation manner is the same as that of example 1, except that an equal amount of modified polydimethylsiloxane C is used to replace modified polydimethylsiloxane A.

[0090] Example 6

[0091] A high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof, the specific implementation manner is the same as that of example 1, except that an equal amount of modified polydimethylsiloxane D is used to replace modified polydimethylsiloxane A.

[0092] Example 7

[0093] A high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof, the specific implementation manner is the same as that of example 1, except that the crosslinking resin is a water-based polyester resin.

[0094] Comparative Example 1

[0095] A high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof, the specific implementation manner is the same as that of example 1, except that an equal amount of commercially available polydimethylsiloxane is used to replace modified polydimethylsiloxane A.

[0096] Effect evaluation:

[0097] The fireproof glass prepared in examples 1-7 and comparative example 1 is tested and analyzed, and the specific results are shown in tables 1-2.

[0098] Performance test:

[0099] (1) Impact strength test:

[0100] The impact resistance of the glass was tested according to the method of "impact resistance" of the national standard GB 15763.2-2005 "Safety glazing for buildings - Part 2: toughened glass"; a 63.5 mm diameter (mass about 1040 g) smooth steel ball was placed at a height of 1000 mm from the surface of the fireproof glass sample, and was allowed to fall freely, and the impact point was within a range of 25 mm from the center of the sample, and each sample was impacted once, and if the surface of the composite fireproof glass was not damaged, the height of the steel ball was increased to 1500 mm, 1900 mm, and the strength of the impact resistance was evaluated by using a 1-6 level evaluation, and the higher the score, the better the impact resistance; wherein, no damage at 1900 mm was level 6, no damage at 1500 mm was level 5, no damage at 1000 mm was level 4, no damage at 800 mm was level 3; no damage at 600 mm was level 2, no damage at 300 mm was level 1, and the specific results are shown in Table 1.

[0101] (2) Light transmittance test

[0102] The light transmittance was tested according to the national standard GB 15763.1-2009 "Safety glazing for buildings - Part 1: fire-resistant glass", and the specific results are shown in Table 1.

[0103] Table 1 Performance test

[0104]

[0105]

[0106] From the results in Table 1, it can be seen that the fireproof glass prepared in Examples 1-3 has better light transmittance and impact resistance.

[0107] Compared with Example 1, in the preparation of modified polydimethylsiloxane, Example 4 changes the mass ratio of hydroxylated polydimethylsiloxane and 3-chloro-2-hydroxypropane sulfonic acid sodium, the hydrophilicity of polydimethylsiloxane decreases, and Examples 5-6 change the mass ratio of reactants, allyl polyoxyethylene ether and 1,3-divinyl tetramethyl disiloxane, the hydrophilic group of polydimethylsiloxane decreases, and Examples 4-6 will all cause the dispersion and compatibility of polydimethylsiloxane to be poor, and thus will also cause the network structure stability to decrease, and the impact resistance and light transmittance of the fireproof glass to decrease.

[0108] Compared with Example 1, Example 7 does not add water-based epoxy resin, the polar group decreases, the adhesion to the surface of the glass decreases, and the network structure stability of the fireproof material layer decreases, and thus the impact resistance and light transmittance of the fireproof glass decrease.

[0109] Comparative Example 1 Compared with Example 1, equal amount of commercially available polydimethylsiloxane is used to replace modified polydimethylsiloxane A, the dispersibility and compatibility of polydimethylsiloxane in aqueous solution are poor, and then the impact strength and light transmittance of the fireproof glass are greatly reduced.

[0110] (3) Fire resistance test

[0111] The fireproof glass prepared in the above Examples 1-3 is subjected to fire resistance time test according to the national standard GB / T 12513-2006 "Fire resistance test methods for glazing assemblies", and the specific results are shown in Table 2.

[0112] Table 2

[0113] Example 1 Example 2 Example 3 Fire resistance time (min) 135 124 134

[0114] It can be known from the results in Table 1 that the fireproof glass prepared in Examples 1-3 has long fire resistance time and excellent fireproof performance.

[0115] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and the equivalent implementation examples are equivalent. Any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application are still within the scope of the technical solution.

Claims

1. A high performance fire resistant glass for building based on nanosilica liquid, characterized in that, The fireproof glass comprises two layers of spaced glass and a fireproof material layer between the glass layers; the fireproof material layer is prepared from the following raw materials in parts by weight: 20-35 parts of nano silicon liquid, 10-15 parts of modified polydimethylsiloxane, 8-16 parts of alkaline solution, 4-10 parts of polyol, 3-8 parts of carbonization agent, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of corrosion inhibitor, 0.1-0.4 parts of curing agent, 0.1-0.3 parts of leveling agent, 0.05-0.2 parts of defoaming agent, and 30-50 parts of deionized water; wherein the solid content of the nano silicon liquid is 30-40%. The preparation method of the modified polydimethylsiloxane comprises the following steps: Q1. The polydimethylsiloxane is subjected to oxygen plasma treatment to obtain hydroxylated polydimethylsiloxane; Q2. The hydroxylated polydimethylsiloxane obtained in step Q1 and sodium 3-chloro-2-hydroxypropane sulfonate are mixed, heated to 40-60℃, and sodium hydroxide aqueous solution is added while stirring, and reacted for 3-5 hours to obtain a reaction product; Q3. The reaction product obtained in step Q2, allyl polyoxyethylene ether, 1,3-divinyl tetramethyl disiloxane and isopropyl alcohol are mixed, heated to 70-85℃, and sulfuric acid is added while stirring, and the temperature is raised to 100-110℃ and reacted for 3-4 hours, and then dried to obtain the modified polydimethylsiloxane; The mass ratio of the hydroxylated polydimethylsiloxane and sodium 3-chloro-2-hydroxypropane sulfonate in step Q2 is 1:(3-4.5); The mass ratio of the reaction product, allyl polyoxyethylene ether and 1,3-divinyl tetramethyl disiloxane in step Q3 is 1:(2.5-4):(0.5-0.9).

2. The high-performance fire-resistant glass for building based on nanometer silicon liquid according to claim 1, characterized in that, The alkaline solution is sodium hydroxide aqueous solution and / or potassium hydroxide aqueous solution, and the mass concentration is 50%-80%.

3. The high-performance fire-resistant glass for building based on nanometer silicon liquid according to claim 1, characterized in that, The specific steps of the oxygen plasma treatment in step Q1 are as follows: the polydimethylsiloxane is placed in an oxygen environment, irradiated with ultraviolet light with a wavelength of 320-400 nm for 60-90 minutes, then poured into a 30wt%-35wt% ethanol aqueous solution for 30-45 minutes, and then taken out to obtain the hydroxylated polydimethylsiloxane.

4. The high-performance fire-resistant glass for building based on nanometer silicon liquid according to claim 1, characterized in that, The cross-linking resin is a combination of water-based polyester resin and water-based epoxy resin.

5. The high performance fire resistant glass for building based on nano-silicon fluid according to claim 1, characterized in that, The carbonization agent is any one or more of sorbitol, disaccharide, fructose and glucose.

6. The high-performance fire-resistant glass for building based on nanometer silicon liquid according to claim 1, characterized in that, The thickness of the glass is 3-8mm, and the thickness of the fireproof material layer is 2-5mm.

7. A method for preparing the high performance fire resistant glass for building based on nanosilica fluid according to any one of claims 1-6, characterized in that, The preparation method comprises the following steps: S1. The nano silicon liquid, alkaline solution and modified polydimethylsiloxane are mixed and stirred to obtain a mixed solution; S2. The mixed solution obtained in step S1, polyol, carbonization agent, heat-resistant stabilizer, cross-linking resin, corrosion inhibitor, curing agent, leveling agent, defoaming agent and deionized water are mixed, heated to 40-50℃ and reacted, stirred, left to stand, filtered to obtain a fireproof liquid; S3. The fireproof liquid obtained in step S2 is poured into the glass interlayer, and after curing into a gel, a fireproof material layer is formed, and then a glass strip and transparent fire-retardant glue are used to seal the pouring port to obtain the fireproof glass.

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