Glass interlayer liquid, heat-insulating fireproof glass and preparation process

Abstract

The application discloses a kind of glass interlayer liquid, heat-insulating fireproof glass and preparation process, mainly related to fireproof glass technical field.The steps include: S1A solution preparation, based on silica silicon powder configuration high-purity silica sol obtains A solution;S2B solution preparation: with quartz sand as raw material, after pickling impurities, using the concentration of 5%~20% potassium hydroxide aqueous solution, according to the mass ratio of quartz sand 15-50 times addition and carry out cycle wet grinding reaction, the potassium silicate filtrate obtained after concentration, adjust modulus to 3.0-3.5, obtain B solution;S3 after A solution is mixed evenly, B solution and A solution are mixed in closed container, stirring is carried out at 50-65 DEG C for 10-30min, cooling to 35-45 DEG C, keep stirring and start vacuumizing 25-40min to pressure close to-0.1, temperature is lowered to less than 20 DEG C, stop stirring, pressure relief, interlayer liquid is obtained.The beneficial effects of the application are: low cost, suitable for high latitude cold area use, and finished product glass hardness is high, heat-insulating fireproof performance is good.

Description

Technical Field

[0001] This invention relates to the fields of glass interlayer liquid, heat-insulating and fire-resistant glass and its preparation process, specifically a glass interlayer liquid. Background Technology

[0002] Fire-resistant glass is mainly classified into monolithic fire-resistant glass and composite fire-resistant glass based on its structure. Composite fire-resistant glass is usually composed of two or more layers of glass with a functional interlayer in between. Therefore, its various properties mainly depend on the characteristics of the interlayer. However, the preparation of high-performance fire-retardant liquids requires high-purity raw materials and complex chemical modification processes, resulting in high costs. For example, potassium silicate fire-retardant liquids prepared using the sol-gel method have low solid content and high viscosity, making them unsuitable for direct use and requiring further processing, which increases production costs.

[0003] Furthermore, other processes for obtaining potassium silicate, if based on quartz sand, all require high temperature or high pressure environments, and the production cycle is long, taking up to three days. Therefore, existing manufacturers mostly use pre-processed silicon raw materials, which are costly and difficult to control in terms of quality.

[0004] Meanwhile, the interlayering process makes it difficult to balance the light transmittance and fire-resistant insulation performance of the fire retardant. Some fire retardants, while improving fire-resistant insulation, may reduce light transmittance. Currently, the light transmittance of some fire-resistant glasses on the market is only around 75%, which is insufficient to meet the requirements for high light transmittance. Furthermore, the hardness of the fire retardant adhesive after curing is relatively low, and its rheological resistance is poor, making it prone to deformation in high or low temperature environments. Its application environment is also limited to temperatures above -10°C. This results in numerous challenges for related products in terms of raw material costs, performance balance, process improvement, and applicable scenarios, requiring further research and development. Summary of the Invention

[0005] The purpose of this invention is to provide a glass interlayer liquid that is low in cost, simple in process, cold-resistant, and produces glass with high hardness and good heat insulation and fire resistance.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] A glass interlayer liquid, the preparation process of which includes:

[0008] The S1A solution is prepared by adding 0.1%-2% silane coupling agent and 4%-10% glycerol to high-purity silica sol in a mass ratio to obtain solution A.

[0009] Preparation of S2B solution: Quartz sand is used as raw material. After acid washing to remove impurities, potassium hydroxide solution is prepared by cyclic wet milling using a 5% to 20% potassium hydroxide aqueous solution as a dispersion liquid. The amount of potassium hydroxide solution used is 15 to 50 times the weight of quartz sand. After the obtained potassium silicate solution is concentrated, silica powder is added to adjust the modulus to 3.0 to 3.5 to obtain solution B.

[0010] S3 mixes solutions A and B in a closed container, stirs at 50-65℃ for 10-30 minutes, cools to 35-45℃, keeps stirring and starts vacuuming for 25-40 minutes until the pressure is close to -0.1, then cools down to below 20℃, stops stirring, and releases pressure to obtain the jacketed liquid.

[0011] In step S2, the acid washing and impurity removal of the quartz sand includes: soaking the quartz sand in an acidic aqueous solution for 30-50 hours, and washing and filtering with water until the quartz sand is neutral.

[0012] In step S2, the cyclic wet milling reaction specifically includes: using zirconia microspheres as the grinding medium, using 8% potassium hydroxide solution as the dispersion liquid, and adding a lower alcohol as a dispersant, and performing cyclic milling at a temperature of 80°C. The mass ratio of the added potassium hydroxide solution to the quartz sand is (20±2):1. The filter cake filtered after the wet milling reaction is returned to the cyclic wet milling system and continuously produced with newly added quartz sand and potassium hydroxide aqueous solution. The obtained filtrate is a potassium silicate aqueous solution.

[0013] The lower alcohols include any one or a combination of several of methanol, ethanol, propanol, isopropanol, butanol, isobutanol, and tert-butanol.

[0014] The lower alcohol is equal amounts of methanol and ethanol, and the amount added is 2 to 10 times the weight of the quartz sand.

[0015] In step S2, the potassium silicate filtrate obtained by wet milling reaction is purified by resin column. After vacuum concentration, 20%-30% by weight of silica powder is added to the concentrate. The particle size of the added silica powder is 3-0.3 μm. The mixture is stirred and the system modulus is adjusted to 3.2 to obtain solution B.

[0016] Step 3 is carried out on the glass production site, and the interlayer liquid is poured on site after it is obtained.

[0017] A sealed vacuum reactor is set up at the glass production site. In step S3, the stirred solutions A and B are added to the reactor, and the following process parameters are executed in sequence:

[0018] Stirring speed: approximately 100 rpm; temperature: 50-65 degrees Celsius; stirring time: 10-30 minutes.

[0019] Turn on the cooling system to lower the temperature to 35-45℃, then turn it off.

[0020] Reduce the rotation speed to 50 rpm, start the vacuum pump to evacuate for 20-40 minutes;

[0021] Maintain a vacuum, and activate the cooling system to lower the temperature to 19°C.

[0022] Stop stirring, slowly release the air through the vent valve while releasing the liquid, and obtain the modulus of potassium silicate in the jacket liquid increased to 5.

[0023] In step 3, the obtained interlayer liquid is heated in an oven at a temperature of 50-55°C for 4-6 hours before pouring; then the oven temperature is raised to 60-65°C and heated for another 10 hours.

[0024] As another aspect of the present invention, a heat-insulating and fire-resistant glass includes double-layered glass with a cavity of gap d between the double-layered glass, produced at a temperature not exceeding 30 degrees Celsius, using the glass interlayer liquid obtained above, and after the interlayer liquid is mixed through step s3 to obtain a component, it is poured into the cavity between the double-layered glass, with a usage of 1.5 ± 0.3 kg of interlayer liquid filling a cavity with a thickness of 1 mm per square meter of glass.

[0025] As another aspect of the present invention, a fireproof glass manufacturing process using the glass interlayer liquid includes the following steps: based on a double-layer glass structure, and having a cavity with a gap of d between the double-layer glass, the glass interlayer liquid is poured into the cavity between the double-layer glass, with a volume of 1 square meter of glass and 1 mm thick cavity filled with 1.5 ± 0.3 kg of interlayer liquid.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. This method avoids the high energy consumption and high risk of traditional wet and dry processes for preparing potassium silicate. It uses physical wet grinding as the main reaction, which does not require a high-temperature and high-pressure reaction environment. Therefore, it does not require the conditions for obtaining relevant permits and licenses, which greatly reduces the production threshold and cost. The reaction time is also greatly shortened, and the product can be obtained on the same day. It has high overall efficiency and can respond quickly to demand. This method is simple and easy to implement, and both the solvent and the materials can be recycled. There is almost no discharge of waste. Furthermore, the use of quartz sand directly greatly reduces the cost of raw materials and optimizes the production process.

[0028] 2. By producing the final interlayer liquid at the glass processing site, efficient dispersion and in-situ mold raising are achieved, avoiding adverse factors such as viscosity changes and difficulties in glass filling during the interlayer material production process;

[0029] 3. By controlling the modulus appropriately, the hardness is maximized without reducing the light transmittance, while also taking into account curing and fire resistance. It is poured into the glass gaps to achieve a final hardness of 95 Shore A after potassium silicate curing, withstanding a low temperature of 15 degrees Celsius, reaching a wear resistance limit of 120, and being able to withstand severe cold, and be used in environments as low as -15 degrees Celsius. Attached Figure Description

[0030] Figure 1 This is a flowchart of the present invention.

[0031] Figure 2 This is page 2 of the test report for fire-resistant glass.

[0032] Figure 3 This is page 3 of the test report for fire-resistant glass.

[0033] Figure 4 This is page 4 of the test report for fire-resistant glass.

[0034] Figure 5 This is page 5 of the test report for fire-resistant glass. Detailed Implementation

[0035] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0036] Unless otherwise specified, the instruments, reagents, and materials used in the following embodiments are all conventional instruments, reagents, and materials already available in the prior art and can be obtained through legitimate commercial channels. Unless otherwise specified, the experimental methods and detection methods used in the following embodiments are all conventional experimental methods and detection methods already available in the prior art.

[0037] Preparation of 1A solution

[0038] 1.1 Preparation of solution A

[0039] Purchase and prepare high-purity silica sol, and use the high-purity silica sol as the base of mixture a;

[0040] Mixture a' was obtained by adding 1.5% silane coupling agent KH560 to high-purity silica sol. This step involves surface treatment of two raw materials with different physical properties, successfully grafting long chains onto the surface of silica particles, giving the mixture unique steric stability, allowing it to exist stably for a long time.

[0041] Adding 8% glycerol to mixture a' yields mixture A. Glycerol imparts low-temperature resistance to the mixture. The addition of glycerol coats the silica molecules, slowing down the in-situ polymerization rate of potassium silicate during the reaction in mixture A+B. This prolongs the time to reach maximum depolymerization (low viscosity), making the reaction process easier to control and significantly reducing the likelihood of problems during preparation.

[0042] Preparation of 2B solution

[0043] 2.1 Quartz Sand Pretreatment

[0044] Quartz sand was used as raw material and soaked in a 15% hydrochloric acid aqueous solution for 36 hours to wash away impurities. Then, it was washed with drinking water until neutral.

[0045] 2.2 Wet milling reaction

[0046] Dissolve potassium hydroxide with a content of not less than 92% in drinking water to prepare an 8% potassium hydroxide solution for later use;

[0047] Pretreated quartz sand was added to a circulating wet mill, zirconia microspheres were used as the grinding medium, a prepared potassium hydroxide solution was added as the dispersion liquid, and methanol and ethanol were added as dispersants. The total amount of methanol and ethanol added was 30% of the weight of quartz sand. The mass ratio of potassium hydroxide solution to quartz sand was (20±2):1.

[0048] The wet milling reaction process is monitored. When the modulus of the generated potassium silicate solution is ≥0.7, preferably ≥1.0, solid-liquid separation is performed. The filter cake is returned to the circulating wet milling system, replenished with fresh quartz sand and potassium hydroxide aqueous solution, and wet milling continues for continuous production. The resulting filtrate is purified by resin and then proceeds to subsequent steps. The milling process is also the reaction process, and the resulting filtrate is a potassium silicate aqueous solution.

[0049] Selection of wet grinding equipment:

[0050] Equipment type: Vertical Bead Mill, capacity 200L, motor power 30-40kW.

[0051] Wet grinding media: Zirconia beads (diameter 0.9-1.5 mm, filling amount 120 L, mass approximately 150-200 kg).

[0052] 2.3 Concentration

[0053] The filtrate is purified using a purification resin. The filtrate is pumped into a chelation resin column using a liquid pump and retained for 3-5 minutes. After column chromatography, the resin is rinsed with 2-3 column volumes of deionized water. The combined filtrates are then filtered through a precision filter fitted with a 0.45-micron nylon filter cartridge to obtain the purified filtrate.

[0054] The purified filtrate was concentrated using a vacuum concentrator. The concentration temperature was 70-120℃; the vacuum degree was -0.08-0.095 MPa; and the water content at the concentration endpoint was 60±5%, yielding the concentrated solution.

[0055] The distilled liquid is returned to the wet milling process and used as a dispersant.

[0056] 2.4 Adjusting the modulus

[0057] Add silica powder to the concentrated solution and stir until homogeneous. The amount added is 25% of the weight of the concentrated solution, and the modulus of the concentrated solution is adjusted to 3.2. The particle size range of the added silica powder is 3-0.3 μm. Potassium silicate with a low modulus (3.3) is obtained.

[0058] 2.5 Adjusting solution B

[0059] Add 90% potassium hydroxide (potassium hydroxide tablets) to adjust and obtain solution B.

[0060] The ratio of the molar mass of expensive potassium hydroxide to the molar mass of first-grade potassium hydroxide.

[0061] 3. Mix solutions A and B and react to obtain a sandwich liquid.

[0062] The equipment used is a dedicated reaction vessel located within the glass production area. This step mainly achieves in-situ mold raising from 3.3 to 5, with a solid content between 50% and 54%. It can be stored for 6 hours below 20 degrees Celsius and for 3 hours below 30 degrees Celsius. Therefore, it needs to be produced on-site and put into use quickly.

[0063] Solution A and solution B are mixed on-site in the glass production workshop to create the interlayer liquid.

[0064] Before production, the temperature inside the workshop is adjusted according to the actual local temperature. If the weather is hot, the refrigeration unit is turned on in advance to adjust the indoor temperature to 8-15 degrees Celsius.

[0065] 3.1 Feeding

[0066] After thoroughly mixing solution A in a container using a stirrer, add it to the reaction vessel.

[0067] Then add solution B to the reaction vessel;

[0068] 3.2 Reaction

[0069] Control the following parameters inside the reactor: stirring speed approximately 100 rpm; temperature 50-65 degrees Celsius.

[0070] When the reaction temperature is 55 degrees, the reaction time should be controlled to be no less than 30 minutes.

[0071] When the reaction temperature is 58 degrees, the reaction time should be controlled to be no less than 20 minutes.

[0072] When the reaction temperature is 61-65 degrees, the reaction time should be controlled to be no less than 15 minutes.

[0073] When the reaction temperature is greater than 65 degrees, the reaction time should be controlled to be no less than 10 minutes.

[0074] 3.3 Cooling

[0075] Start the reactor cooling program to lower the internal temperature to 35-45℃, then turn off the cooling and start the vacuum pump to create a vacuum environment inside the reactor. Reduce the rotation speed to 50 rpm. Note that the vacuuming time should be no less than 20 minutes (25-40 minutes) and observe whether the liquid surface is calm.

[0076] After vacuuming is completed, maintain the vacuum, restart the refrigeration to lower the temperature to 19°C, turn off the circulating refrigeration and vacuum pump, and release the liquid while slowly venting the air through the exhaust valve to obtain the jacketed liquid.

[0077] The interlayer liquid can be used directly or filtered through a 100-mesh filter to remove air bubbles. The modulus of potassium silicate in the obtained interlayer liquid increases from about 3.3 to 5, maximizing hardness without reducing light transmittance.

[0078] 3.4 Oven heating

[0079] Place it in the oven and bake at 50-55 degrees Celsius for 4-6 hours; then increase the oven temperature to 60-65 degrees Celsius and bake for another 6-10 hours; after removing it, immediately fill the gap between the double-layered glass.

[0080] Calculate the injection volume for a glass cavity: approximately 1.5 kg for a 1 square meter area and a 1 mm gap.

[0081] The required weight is calculated based on the thickness of the cavity. If too much potassium silicate solution is poured in, the glass will bulge. If too little potassium silicate solution is poured in, the glass will sink inward. Whether it bulges or sinks, it will cause poor image formation, similar to a funhouse mirror.

[0082] The fire-resistant glass manufactured by the above method has a Shore hardness of over 95HD, low-temperature resistance of -15℃, and a fire resistance limit of over 120 minutes.

[0083] In addition to improved performance of fire-resistant glass, this process also has advantages in the following aspects:

[0084] This solution uses quartz sand as the raw material, directly participating in the production reaction. Natural quartz sand typically contains impurities such as iron, aluminum, calcium, and magnesium, preventing current competitors from using it directly. Instead, they purchase finished silicon raw materials (silicon oxide or silicon dioxide) for production, significantly increasing costs. This process, however, uses quartz sand as the direct raw material. Quartz sand costs approximately 300 yuan per ton, while ordinary silicon dioxide costs 9,000-15,000 yuan per ton, and the specialized materials used for fire-resistant glass are even more expensive. Therefore, this significantly reduces the cost of fire-resistant glass. Traditional production methods use spherical nano-silicon oxide or silicon dioxide hydrosol as the main material, costing approximately 20,000 yuan per ton; this method greatly reduces costs.

[0085] This method avoids the high energy consumption and high risk of traditional wet and dry processes for preparing potassium silicate. Wet and dry processes require high temperature and pressure, resulting in high energy consumption, significant risks, high equipment investment costs, and environmental pollution. This method primarily employs a reaction involving physical grinding, is simple and easy to implement, and allows for the recycling of both solvents and materials, with virtually no waste emissions.

[0086] The production process and specialized equipment are used together. By employing a dedicated reaction vessel at the glass processing site, efficient dispersion and in-situ molding are achieved, avoiding adverse factors such as viscosity changes and difficulties in glass filling during the production of laminated materials. It also facilitates the addition of various additives, providing convenience for manufacturing fireproof glass with different requirements and models, and reducing the defect rate.

[0087] By controlling the modulus appropriately, a range of 4.9-5.1 was determined to maximize hardness without decreasing light transmittance. The fire resistance of potassium silicate is related to its modulus, increasing with increasing modulus. However, the modulus also has a correlation with other parameters such as hardness and transmittance. As the modulus increases, while hardness increases, light transmittance rapidly drops to 0 when the modulus exceeds 5.3. This is because the degree of cross-linking of silicon-oxygen bonds in potassium silicate gradually increases with increasing modulus, enhancing the overall chemical and thermal stability of the material, ultimately leading to a higher fire resistance limit. When the modulus is too small, potassium silicate particles cannot effectively form a gel network, resulting in low condensation and the potassium silicate remaining in a low-viscosity fluid state, unable to solidify. When the modulus is too high, the internal porosity of the material decreases, reducing the solvent distribution range and causing the material to whiten and lose transparency. Therefore, we use a B solution with a lower modulus and control the modulus to around 5 through a specific mixing preparation method and filling conditions. This ensures both the hardness and fire resistance of the fireproof glass and its light transmittance.

[0088] Increasing the solid content of potassium silicate can improve various properties such as weather resistance and refractory properties, but it also affects viscosity and mechanical properties. Increased solid content increases the hardness of potassium silicate, but it also leads to increased viscosity during in-situ molding, thus increasing the processing difficulty of pouring the potassium silicate solution into the glass during this process. The above process ultimately controls the potassium silicate solid content between 50-54%, facilitating processing and resulting in high subsequent performance.

[0089] Example 2: Performance tests were conducted on the glass obtained in Example 1.

[0090] 1. Sample preparation

[0091] After filling the interlayer liquid with a 25mm "three-glass, two-cavity" structure, the sample configuration is as follows: 5mm glass + 5mm cavity + 5mm glass + 5mm cavity + 5mm glass (total 25mm, three-glass, two-cavity).

[0092] Cavity filling: Milky white interlayer liquid (density: 1.38 g / cm³) 3 (Solid content 48%, modulus 5.33)

[0093] Curing period: 65℃±10℃, 6h

[0094] 2. Performance testing

[0095] Eight key tests were completed in a -15℃ environmental test chamber.

[0096]

[0097]

[0098] All the above tests were conducted at -15℃ in accordance with current national standards and industry-standard methods.

[0099] 3. Key Data

[0100] Modular verification

[0101] SiO2 mass: 750gkg - 1 × 0.48 = 360g

[0102] K2O mass: 250gkg - 1 × 0.56 × 0.9 ≈ 126g

[0103] Modulus M = (360 / 60) ÷ (126 / 94.2) ≈ 5.33

[0104] Curing efficiency

[0105] Traditional 80℃×12h → Energy consumption 960℃·h

[0106] This process operates at 65℃ for 6 hours, consuming 390℃·h of energy, resulting in 59% energy savings.

[0107] Optics & Rheology

[0108] After the nano-silicon reaction, the light transmittance is 83.4% (>83%), the viscosity at 25℃ is 28 mPa·s, and the on-site filling window is 12 hours, all of which meet the requirements for continuous production cycle.

[0109] 4. Conclusion

[0110] In an extreme environment of -15℃ and a 25mm triple-glass, two-cavity structure, this interlayer fluid (modulus 5.33) achieved the following:

[0111] 1) Fire resistance integrity ≥ 1.00h;

[0112] 2) Fire resistance and heat insulation ≥ 1.00h (average temperature rise 64.7℃);

[0113] 3) Shore hardness 92HD, abrasion resistance 0.033g;

[0114] 4) Light transmittance 83%, low-temperature process window 12h;

[0115] 5) Curing temperature is reduced by 15℃, curing time is shortened by 50%, and energy consumption is reduced by nearly 60%.

Claims

1. A glass interlayer liquid, characterized in that, Its preparation process includes: The S1A solution is prepared by adding 0.1%-2% silane coupling agent and 4%-10% glycerol to high-purity silica sol in a mass ratio to obtain solution A. Preparation of S2B solution: Quartz sand is used as raw material. After acid washing to remove impurities, potassium hydroxide solution is prepared by cyclic wet milling using a 5% to 20% potassium hydroxide aqueous solution as a dispersion liquid. The amount of potassium hydroxide solution used is 15 to 50 times the weight of quartz sand. After the obtained potassium silicate solution is concentrated, silica powder is added to adjust the modulus to 3.0 to 3.5 to obtain solution B. S3 mixes solutions A and B in a closed container, stirs at 50-65℃ for 10-30 minutes, cools to 35-45℃, keeps stirring and starts vacuuming for 25-40 minutes until the pressure is close to -0.1, then cools down to below 20℃, stops stirring, and releases pressure to obtain the jacketed liquid.

2. The glass interlayer liquid according to claim 1, characterized in that, In step S2, the acid washing and impurity removal of the quartz sand includes: soaking the quartz sand in an acidic aqueous solution for 30-50 hours, and washing and filtering with water until the quartz sand is neutral.

3. The glass interlayer liquid according to claim 1, characterized in that, In step S2, the cyclic wet milling reaction specifically includes: using zirconia microspheres as the grinding medium, using 8% potassium hydroxide solution as the dispersion liquid, and adding a lower alcohol as a dispersant, and performing cyclic milling at a temperature of 80°C. The mass ratio of the added potassium hydroxide solution to the quartz sand is (20±2):

1. The filter cake filtered after the wet milling reaction is returned to the cyclic wet milling system and continuously produced with newly added quartz sand and potassium hydroxide aqueous solution. The obtained filtrate is a potassium silicate aqueous solution. The lower alcohols include any one or a combination of several of methanol, ethanol, propanol, isopropanol, butanol, isobutanol, and tert-butanol.

4. The glass interlayer liquid according to claim 3, characterized in that, The lower alcohol is equal amounts of methanol and ethanol, and the amount added is 2 to 10 times the weight of the quartz sand.

5. The glass interlayer liquid according to claim 1, characterized in that, In step S2, the potassium silicate filtrate obtained by wet milling reaction is purified by resin column. After vacuum concentration, 20%-30% by weight of silica powder is added to the concentrate. The particle size of the added silica powder is 3-0.3 μm. The mixture is stirred and the system modulus is adjusted to 3.2 to obtain solution B.

6. The glass interlayer liquid according to claim 1, characterized in that, Step 3 is carried out on the glass production site, and the interlayer liquid is poured on site after it is obtained.

7. The glass interlayer liquid according to claim 6, characterized in that, A sealed vacuum reactor is set up at the glass production site. In step S3, the stirred solutions A and B are added to the reactor, and the following process parameters are executed in sequence: Stirring speed: approximately 100 rpm; temperature: 50-65 degrees Celsius; stirring time: 10-30 minutes. Turn on the cooling system to lower the temperature to 35-45℃, then turn it off. Reduce the rotation speed to 50 rpm, start the vacuum pump to evacuate for 20-40 minutes; Maintain a vacuum, and activate the cooling system to lower the temperature to 19°C. Stop stirring, slowly release the air through the vent valve while releasing the liquid, and obtain the modulus of potassium silicate in the jacket liquid increased to 5.

8. The glass interlayer liquid according to claim 6, characterized in that, In step 3, the obtained interlayer liquid is heated in an oven at a temperature of 50-55°C for 4-6 hours before pouring; then the oven temperature is raised to 60-65°C and heated for another 10 hours.

9. A heat-insulating and fire-resistant glass, comprising double-layered glass with a cavity of gap d between the double-layered glass, characterized in that, Produced at a temperature not exceeding 30 degrees Celsius, using the glass interlayer liquid obtained as claimed in any one of claims 1-8, and after the interlayer liquid is mixed in step s3 to obtain the final product, it is poured into the cavity between the double-layer glass, with a dosage of 1 square meter of glass and 1 mm thickness of cavity filled with 1.5 ± 0.3 kg of interlayer liquid.

10. A process for manufacturing fire-resistant glass, characterized in that, Using the glass interlayer liquid as described in any one of claims 1-9, the specific steps include: based on a double-layer glass structure, and having a cavity with a gap of d between the double-layer glass, injecting the glass interlayer liquid into the cavity between the double-layer glass, with a volume of 1 square meter of glass and 1 mm thick cavity filled with 1.5 ± 0.3 kg of interlayer liquid.

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