High-performance building fireproof glass based on nanometer silicon liquid and preparation method of high-performance building fireproof glass

Abstract

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

Description

Technical Field

[0001] The present invention belongs to the technical field of glass product manufacturing, and particularly relates to a high-performance fireproof glass for buildings based on nano-silicon liquid and a preparation method thereof. Background Art

[0002] With the continuous improvement of the fire safety requirements in the construction industry, fireproof windows are increasingly widely used in buildings. As a type of window with fireproof function, fireproof windows are mainly used for fire separation in buildings, and their structure usually consists of fireproof glass and fireproof frames, etc. Fireproof glass, as a key part of fireproof windows, is composed of glass and a fireproof material layer in the interlayer. Its function is to prevent flames and high-temperature smoke from spreading through the glass to other areas within a certain period of time during a fire.

[0003] Fireproof glass is mainly divided into two types: composite fireproof glass and single-piece fireproof glass. Composite fireproof glass is composed of two or more layers of glass sheets and one or more layers of fireproof material layers. Currently, fireproof glass based on nano-silicon liquid occupies a crucial position in the fireproof glass industry due to its excellent heat insulation performance. When fireproof glass encounters high temperature, the fireproof material layer will quickly foam, expand and spread, thus preventing the spread of flames. However, the fireproof material layer may have problems such as relatively soft texture and low impact resistance, which are likely to cause the glass to break and pose a danger.

[0004] Chinese Patent CN 111334195 B discloses a fireproof liquid, a preparation method thereof and fireproof glass; the fireproof liquid includes the following components in terms of 100% by mass percentage: 45 - 50% of fumed silica powder, 15 - 25% of alkaline solution, 2 - 5% of leveling agent, 0.5 - 2% of defoaming agent, 1 - 2% of stabilizer, 0.5 - 2% of preservative and the balance of deionized water; the components of the fireproof liquid in this invention are simple, with low cost, and the prepared fireproof glass has high appearance quality and a light transmittance of more than 85%. However, it lacks components for strengthening crosslinking, resulting in low impact resistance of the fireproof material layer.

[0005] Therefore, there is an urgent need for a fireproof glass that not only has good fireproof performance and light transmittance, but also has good impact resistance. Summary of the Invention

[0006] Aiming at the existing technical problems, the purpose of the present invention is to provide a high-performance fireproof glass for buildings based on nano-silicon liquid and a preparation method thereof. The fireproof glass of the present invention has excellent fireproof performance, and good light transmittance and impact resistance.

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

[0008] On the one hand, the present invention provides a high-performance fireproof glass for buildings based on nano-silicon liquid. The fireproof glass includes two layers of glass arranged at intervals and a fireproof material layer in the middle of the glass interlayer. By weight, the raw materials for preparing the fireproof material layer include the following: 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 charring agent, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of anti-corrosion agent, 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. Among them, the solid content of the nano-silicon liquid is 30-40%.

[0009] The reaction mechanism and functions of the present invention are as follows:

[0010] 1. Polydimethylsiloxane has good thermal stability, enabling the fireproof glass to effectively play a fireproof role in a high-temperature environment. The addition of polydimethylsiloxane can undergo chemical reactions with other components in the raw materials, thereby constructing a cross-linked network structure. However, the dispersion performance and compatibility of polydimethylsiloxane in an aqueous solution are poor, which will have a negative impact on the impact resistance and visible light transmittance of the fireproof glass.

[0011] On the one hand, the present invention preliminarily modifies polydimethylsiloxane with sodium 3-chloro-2-hydroxypropanesulfonate. Sodium 3-chloro-2-hydroxypropanesulfonate can react with polydimethylsiloxane treated with oxygen plasma in an alkaline environment. The introduced sulfonic acid group improves the hydrophilicity of polydimethylsiloxane, thereby enhancing its dispersibility and compatibility in the system and further improving the storage stability of the raw materials of the fireproof material layer. On the other hand, the present invention modifies the reaction product with allyl polyoxyethylene ether and 1,3-divinyltetramethyldisiloxane, introducing more hydrophilic groups and active hydrogen groups, improving the dispersibility of polydimethylsiloxane in the system, and making the network cross-linked structure have better stability, thereby ensuring that the fireproof glass has excellent impact resistance and light transmittance.

[0012] 2. The cross-linking resin of the present invention is composed of waterborne polyester resin and waterborne epoxy resin. The cross-linking resin has multiple polar groups and has a strong adhesion effect on the glass surface, which can improve the bonding strength between the fireproof material layer and the glass. At the same time, the cross-linking resin can undergo a cross-linking reaction with the modified polydimethylsiloxane with active hydrogen to form a network structure, improving the stability of the network structure formation and further enhancing the impact resistance of the fireproof glass.

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

[0014] In some embodiments, the preparation method of the modified polydimethylsiloxane comprises the following steps:

[0015] Q1. Perform oxygen plasma treatment on polydimethylsiloxane to obtain hydroxylated polydimethylsiloxane;

[0016] Q2. Mix the hydroxylated polydimethylsiloxane obtained in step Q1 with sodium 3-chloro-2-hydroxypropanesulfonate, heat to 40 - 60 °C, add an aqueous sodium hydroxide solution while stirring, and react for 3 - 5 h to obtain a reaction product;

[0017] Q3. Mix the reaction product obtained in step Q2 with allyl polyoxyethylene ether, 1,3-divinyltetramethyldisiloxane, and isopropanol, heat to 70 - 85 °C, add sulfuric acid while stirring, raise the temperature to 100 - 110 °C and react for 3 - 4 h, then dry to obtain the modified polydimethylsiloxane.

[0018] In some embodiments, the specific steps of the oxygen plasma treatment in step Q1 are as follows: Place the polydimethylsiloxane in an oxygen environment, irradiate the oxygen with ultraviolet light having a wavelength of 320 - 400 nm for 60 - 90 min, then pour it into an aqueous ethanol solution with a concentration of 30 wt% - 35 wt% and take it out after 30 - 45 min to obtain hydroxylated polydimethylsiloxane.

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

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

[0021] In some embodiments, the cross-linked resin is a composition of a waterborne polyester resin and a waterborne epoxy resin.

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

[0023] More preferably, the dynamic viscosity of the waterborne polyester resin at 25 °C is 70 - 200 mPa·s.

[0024] More preferably, the dynamic viscosity of the waterborne epoxy resin at 25 °C is 500 - 1000 mPa·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 second aspect of the present invention provides a method for preparing a high-performance fireproof glass for buildings based on nano-silicon liquid, comprising the following steps:

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

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

[0036] S3. Pour the fireproof liquid obtained in step S2 into the glass interlayer, cure it into a gel to form a fireproof material layer, and then seal the grouting port with glass strips and transparent flame retardant glue to obtain the fireproof glass.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

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

[0039] 2. The present invention improves the hydrophilicity through modified polydimethylsiloxane, improves the dispersibility and compatibility of 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 resistance and light transmittance.

[0040] 3. The cross-linked resin of the present invention is composed of an aqueous polyester resin and an aqueous epoxy resin in a specific mass ratio, and has multiple polar groups, which improves its 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 with active hydrogen, improve the stability of the network structure formation, and further improve the impact resistance of the fireproof glass. Detailed Embodiments

[0041] The present invention will be described below in conjunction with specific implementation embodiments. It should be noted that the following examples are examples of the present invention and are only used to illustrate the present invention, rather than to limit the present invention. Other combinations and various improvements within the concept of the present invention can be made without departing from the main idea or scope of the present invention.

[0042] According to the ratios and preparation methods of the raw materials specified in the following examples and comparative examples, each fireproof glass was prepared.

[0043] For the convenience of those skilled in the art to implement the present invention, the manufacturers of some raw materials in the examples and comparative examples are described as follows:

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

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

[0046] Aqueous polyester resin: Purchased from Can Sen Chemical New Materials (Shenzhen) Co., Ltd., model number CS-2181W, and the kinematic viscosity at 25 °C is 100 mPa·s;

[0047] Aqueous epoxy resin: Purchased from Shanghai Yantai E-commerce Co., Ltd., grade EP137, and the kinematic viscosity at 25 °C is 800 mPa·s;

[0048] Polydimethylsiloxane: Purchased from Shandong Jueneng Chemical Co., Ltd., model number JN-201;

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

[0050] Allyl polyoxyethylene ether: Purchased from Jiangsu Haian Petrochemical Factory, model number APEG-1000;

[0051] Sulfuric acid: 98 wt%;

[0052] For other raw materials, without special instructions, they can all be purchased from the market.

[0053] Preparation Example 1

[0054] Preparation method of modified polydimethylsiloxane A, comprising the following steps:

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

[0056] Q2. Mix 300 g of the hydroxylated polydimethylsiloxane obtained in step Q1 with 1125 g of sodium 3-chloro-2-hydroxypropanesulfonate, heat to 50 °C, and add 100 mL of 30 wt% aqueous sodium hydroxide solution while stirring. React for 4 h to obtain a reaction product;

[0057] Q3. Mix 200 g of the reaction product obtained in step Q2 with 650 g of allyl polyoxyethylene ether, 140 g of 1,3-divinyltetramethyldisiloxane, and 1000 mL of isopropanol, heat to 80 °C, add 80 mL of sulfuric acid while stirring, raise the temperature to 105 °C and react for 3.5 h. Remove isopropanol by drying in a rotary evaporator to obtain modified polydimethylsiloxane A;

[0058] The specific steps of the oxygen plasma treatment in step Q1 are as follows: The specific steps of the oxygen plasma treatment are: Place polydimethylsiloxane in an oxygen environment, irradiate oxygen with ultraviolet light with a wavelength of 350 nm to generate oxygen-rich groups, the irradiation time is 70 min, then pour it into a 30 wt% aqueous ethanol solution, impregnate for 35 min and then take it out to obtain hydroxylated polydimethylsiloxane.

[0059] Preparation Example 2

[0060] The preparation method of modified polydimethylsiloxane B is the same as that of Preparation Example 1, except that the addition amount of sodium 3-chloro-2-hydroxypropanesulfonate in step Q2 is 810 g.

[0061] Preparation Example 3

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

[0063] Preparation Example 4

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

[0065] Example 1

[0066] A high-performance fireproof glass for buildings based on nano-silicon liquid. The fireproof glass comprises two layers of glass arranged at intervals and a fireproof material layer in the middle of the glass interlayer. By weight, the raw materials for preparing the fireproof material layer include: 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 cross-linked 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. Among them,

[0067] The cross-linked resin is a composition of waterborne polyester resin and waterborne epoxy resin, and the mass ratio of the two is 2.2:1.

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

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

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

[0071] S3. Pour the fireproof liquid obtained in step S2 into the tempered glass interlayer, cure it into a gel at 80°C to form a fireproof material layer, and then seal the grouting port with glass strips and transparent flame-retardant glue to obtain the fireproof glass. Among them, 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 fireproof glass for buildings based on nano-silicon liquid. The fireproof glass comprises two layers of glass arranged at intervals and a fireproof material layer in the middle of the glass interlayer. By weight, the raw materials for preparing the fireproof material layer include: 20 parts of nano-silicon liquid, 8 parts of 80wt% potassium hydroxide aqueous solution, 10 parts of modified polydimethylsiloxane A, 4 parts of pentaerythritol, 3 parts of sorbitol, 2 parts of sodium borate, 2 parts of cross-linked resin, 1 part of potassium tripolyphosphate, 0.1 parts of sodium fluorosilicate, 0.1 parts of polyether leveling agent, 0.05 parts of polyether-modified silicone defoamer, and 30 parts of deionized water. Among them,

[0074] The cross-linked resin is a composition of waterborne polyester resin and waterborne epoxy resin, and the mass ratio of the two is 1.5:1.

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

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

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

[0078] S3. Pour the fireproof liquid obtained in step S2 into the tempered glass interlayer, cure it into a gel at 80 °C to form a fireproof material layer, and then seal the grouting port with glass strips and transparent flame retardant glue to obtain fireproof glass; wherein, the thickness of each layer of tempered glass is 5 mm, and the thickness of each layer of fireproof material layer is 3.5 mm.

[0079] Example 3

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

[0081] The cross-linking resin is a composition of waterborne polyester resin and waterborne epoxy resin, and the mass ratio of the two is 3:1.

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

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

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

[0085] S3. Pour the fireproof liquid obtained in step S2 into the tempered glass interlayer. After curing into a gel at 80°C, a fireproof material layer is formed. Then, seal the grouting port with glass strips and transparent flame-retardant glue to obtain fireproof glass. Among them, the thickness of each layer of tempered glass is 5 mm, and the thickness of each layer of fireproof material layer is 3.5 mm.

[0086] Example 4

[0087] A high-performance building fireproof glass based on nano-silicon liquid and its preparation method. 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 its preparation method. 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 its preparation method. 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 its preparation method. The specific implementation manner is the same as that of Example 1, except that the cross-linking resin is a water-based polyester resin.

[0094] Comparative Example 1

[0095] A high-performance building fireproof glass based on nano-silicon liquid and its preparation method. 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] Test and analyze the fireproof glass prepared in the above Examples 1-7 and Comparative Example 1. 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" in the national standard GB15763.2-2005 "Safety glass for construction - Part 2: Tempered glass". A steel ball with a diameter of 63.5 mm (mass about 1040 g) and a smooth surface was placed at a height of 1000 mm from the surface of the fireproof glass sample and allowed to fall freely. The impact point was within a range of 25 mm from the center of the sample. Each sample was impacted once. If the surface of the composite fireproof glass was not damaged, the height of the steel ball fall was increased successively to 1500 mm and 1900 mm. The strength rating of the impact resistance was evaluated using levels 1-6. The higher the score, the better the impact resistance. Among them, no damage at 1900 mm was rated as level 6, no damage at 1500 mm was rated as level 5, no damage at 1000 mm was rated as level 4, no damage at 800 mm was rated as level 3, no damage at 600 mm was rated as level 2, and no damage at 300 mm was rated as level 1. 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 glass for construction - Part 1: Fireproof glass". 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 in Examples 4-5, in Example 4, the mass ratio of hydroxylated polydimethylsiloxane and 3-chloro-2-hydroxypropanesulfonic acid sodium was changed, and the hydrophilicity of polydimethylsiloxane decreased. In Examples 5-6, the mass ratio of reactants, allyl polyoxyethylene ether, and 1,3-divinyltetramethyldisiloxane was changed, and the hydrophilic groups of polydimethylsiloxane decreased. Examples 4-6 will all lead to poor dispersibility and compatibility of polydimethylsiloxane, and further will all cause the decrease of the network structure stability, resulting in the decrease of the impact resistance and light transmittance of the fireproof glass.

[0108] Compared with Example 1, in Example 7, no waterborne epoxy resin was added, the polar groups decreased, the adhesion to the glass surface decreased, and it would cause the decrease of the network structure stability of the fireproof material layer, and further cause the decrease of the impact resistance and light transmittance of the fireproof glass.

[0109] Comparative Example 1 compared with Example 1, using an equal amount of commercially available polydimethylsiloxane to replace the modified polydimethylsiloxane A, the dispersibility and compatibility of polydimethylsiloxane in aqueous solution are poor, which in turn causes a significant decrease in the impact resistance and light transmittance of the fireproof glass.

[0110] (3) Fire resistance test

[0111] The fireproof glass prepared in Examples 1-3 above was tested for fire resistance time according to the national standard GB / T 12513-2006 "Fire Resistance Test Method for Glazed Elements", 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] From the results in Table 1, it can be seen that the fireproof glass prepared in Examples 1-3 has a long fire resistance time and excellent fireproof performance.

[0115] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on this application. Although this application is disclosed as a preferred embodiment, it is not intended to limit this application. Any person skilled in the art, without departing from the scope of the technical solution of this application, makes some changes or modifications using the disclosed technical content, which are equivalent to equivalent implementation cases. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution.

Claims

1. A high-performance fire-resistant glass for buildings based on nano-silicon liquid, characterized in that: The fireproof glass comprises two layers of glass spaced apart and a fireproof material layer between the glass interlayers; the fireproof material layer comprises the following raw materials, measured 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 carbon former, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of anticorrosive agent, 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%.

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

3. The high-performance fire-resistant glass for buildings based on nano-silicon liquid according to claim 1, characterized in that: The preparation method of the modified polydimethylsiloxane comprises the following steps: Q1. treating polydimethylsiloxane with oxygen plasma to obtain hydroxylated polydimethylsiloxane; Q2. The hydroxylated polydimethylsiloxane obtained in step Q1 and sodium 3-chloro-2-hydroxypropane sulfonate were mixed, heated to 40-60 ° C, and an aqueous sodium hydroxide solution was added while stirring, and the reaction was carried out for 3-5 hours to obtain a reactant; Q3. Mix the reactants obtained in step Q2, allyl polyoxyethylene ether, 1,3-divinyltetramethyldisiloxane and isopropanol, heat to 70-85°C, add sulfuric acid while stirring, raise the temperature to 100-110°C and react for 3-4 hours, and dry to obtain modified polydimethylsiloxane.

4. The high-performance fireproof glass for buildings based on nano-silicon liquid according to claim 3, characterized in that: The specific steps of the oxygen plasma treatment in step Q1 are: placing polydimethylsiloxane in an oxygen environment, irradiating the oxygen with ultraviolet light with a wavelength of 320-400nm for 60-90min, then pouring it into a 30wt%-35wt% ethanol aqueous solution and taking it out after 30-45min to obtain hydroxylated polydimethylsiloxane.

5. The high-performance fire-resistant glass for buildings based on nano-silicon liquid according to claim 3, characterized in that: The mass ratio of the hydroxylated polydimethylsiloxane to sodium 3-chloro-2-hydroxypropane sulfonate in step Q2 is 1:(3-4.5).

6. The high-performance fire-resistant glass for buildings based on nano-silicon liquid according to claim 1, characterized in that: The mass ratio of the reactant, allyl polyoxyethylene ether and 1,3-divinyltetramethyldisiloxane in step Q3 is 1:(2.5-4):(0.5-0.9).

7. The high-performance fire-resistant glass for buildings based on nano-silicon liquid according to claim 1, characterized in that: The cross-linking resin is a composition of a water-based polyester resin and a water-based epoxy resin.

8. The high-performance fire-resistant glass for buildings based on nano-silicon liquid according to claim 1, characterized in that: The char-forming agent is any one or more of sorbitol, disaccharide, fructose and glucose.

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

10. A method for preparing high-performance fire-resistant glass for buildings based on nano-silicon liquid according to any one of claims 1 to 9, characterized in that: The following steps are included: S1. Mixing the nano-silicon liquid, the alkaline solution and the modified polydimethylsiloxane, stirring to obtain a mixed solution; S2. The mixed solution obtained in step S1, polyol, carbon forming agent, heat stabilizer, cross-linking resin, anticorrosive agent, curing agent, leveling agent, defoaming agent and deionized water are mixed, heated to 40-50°C for reaction, stirred, allowed to stand, filtered, and a fire retardant liquid is obtained; S3. Pour the fireproof liquid obtained in step S2 into the glass interlayer, solidify it into glue to form a fireproof material layer, and then seal the grouting port with glass strips and transparent flame-retardant glue to obtain fireproof glass.

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