CN114015362A - Fireproof glue and fireproof glass - Google Patents
Fireproof glue and fireproof glass Download PDFInfo
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- CN114015362A CN114015362A CN202111341053.6A CN202111341053A CN114015362A CN 114015362 A CN114015362 A CN 114015362A CN 202111341053 A CN202111341053 A CN 202111341053A CN 114015362 A CN114015362 A CN 114015362A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J1/00—Adhesives based on inorganic constituents
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/249—Glazing, e.g. vacuum glazing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/22—Glazing, e.g. vaccum glazing
Abstract
The invention relates to the technical field of safe and energy-saving glass product manufacturing, in particular to fireproof glue and fireproof glass. The fireproof glue comprises the following raw materials in parts by weight: 50-55 parts of nano silicon dioxide, 0.01-0.5 part of mildew preventive, 0.1-1.5 parts of char forming agent, 0.1-0.5 part of heat-resistant stabilizer, 0.1-0.2 part of defoamer, 0.1-3 parts of initiator, 17-30 parts of potassium hydroxide, 0-20 parts of solvent and 40-45 parts of deionized water. When the fireproof glue prepared by the invention is applied to glass, the fireproof and heat-insulating performance of the fireproof glue is realized, and meanwhile, the transmittance is reduced at a certain temperature, so that the effect of shading sun and dimming is achieved.
Description
Technical Field
The invention relates to the technical field of energy-saving safety glass product manufacturing, in particular to fireproof glue and fireproof glass.
Background
Energy conservation, emission reduction, low carbon, environmental protection, green and ecology are the main melody of the current building development. With the continuous development of building technology, the application of glass in buildings is more and more extensive, and the relationship between glass, buildings, safety, environmental protection, livability and comfort is more and more intimate. Glass is evolving towards two major functions: firstly, safety and secondly energy conservation.
The fire-proof glass has the performance of common glass, and also has the performance of controlling fire spread, smoke insulation, heat insulation and the like, thereby providing valuable rescue time for effective rescue in case of fire and reducing the loss of personnel, property and buildings to the maximum extent. The fireproof glass can prevent escape and rescue personnel from being damaged by heat radiation and reduce the destructive power of fire to the minimum degree. Due to the recent frequent occurrence of certain well-known fire disasters of large buildings at home and abroad, people pay more and more attention to the research, development, production and use effects of the composite fireproof glass. Meanwhile, with the improvement of living standard, the requirements of people on improving indoor thermal environment and improving the comfort level of buildings are higher and higher, and the air conditioner is used as the main means for achieving the purpose at present, so that the energy consumption of the buildings is increased inevitably, and the energy crisis is aggravated. Currently, there is a need for a glass that has both fire resistance and energy saving.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a fireproof adhesive and fireproof glass which realize the double effects of fire prevention and energy conservation.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect of the invention, the fireproof glue comprises the following raw materials in parts by weight: 50-55 parts of nano silicon dioxide, 0.01-0.5 part of mildew preventive, 0.1-1.5 parts of char forming agent, 0.1-0.5 part of heat-resistant stabilizer, 0.1-0.2 part of defoamer, 0.1-3 parts of initiator, 17-30 parts of potassium hydroxide, 0-20 parts of solvent and 40-45 parts of deionized water.
The particle size of the nano silicon dioxide is 80-180nm, and the particle size distribution index PDI of the nano silicon dioxide is less than 0.01.
The particle size of the nano silicon dioxide is 150-160 nm.
50-52 parts of nano silicon dioxide.
2-3 parts of an initiator; and/or 17-25 parts of potassium hydroxide.
The mildew preventive is selected from at least one of quaternary ammonium salt derivatives, carbazone and No. 75 mildew preventive;
the carbon forming agent is selected from at least one of sucrose, fructose, glucose and maltose;
the heat stabilizer is selected from at least one of borax and boric acid;
the defoaming agent is a polyether modified organic silicon defoaming agent;
the initiator is at least one of potassium carbonate, potassium bicarbonate, potassium fluosilicate and potassium nitrate;
the solvent is at least one selected from glycerol, ethylene glycol and isopropanol.
In another aspect of the present invention, there is provided a fire resistant glass comprising: the fireproof coating comprises a fire-facing surface glass layer, a fire-backing surface glass layer and a fireproof layer located between the fire-facing surface glass layer and the fire-backing surface glass layer, wherein the fireproof layer is formed by the fireproof glue in any embodiment of the invention.
The thickness of the fireproof layer is 0.5-2.0 mm.
The glass layer of the fire-facing surface is a vacuum glass layer manufactured by vacuumizing the middle of two layers of glass.
The fireproof glass further comprises a tempered glass layer located on one side of the fire-facing surface glass layer, the fire-facing surface glass layer is located between the tempered glass layer and the fireproof layer, and a hollow structure is formed between the tempered glass layer and the fire-facing surface glass layer.
The fireproof glue provided by the invention is K2O·nSiO2Based on the inorganic composite material, the fire-proof adhesive quilt can be prepared by the mixture ratio of the components, particularly the mixture ratio of the nano silicon dioxide, the initiator and the potassium hydroxideThe prepared glass has the property that the light transmittance is continuously changed within a certain temperature range, so that the glass can be used as a raw material of thermochromic glass. The fireproof glue provided by the invention can realize fireproof performance and color change performance of changing color along with temperature change, thereby realizing double effects of fireproof and energy saving. The fireproof glass has fireproof and heat-insulating properties, and meanwhile, the fireproof glue and the fireproof glass have the advantages that the transmittance is reduced at a certain temperature, so that the sun-shading and light-adjusting effects are achieved, and the preparation methods of the fireproof glue and the fireproof glass.
Drawings
Fig. 1 is a schematic structural view of a fire-resistant glass according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following specific examples, but the present invention is not limited thereto.
The invention provides a fireproof adhesive which comprises the following raw materials in parts by weight: 50-55 parts of nano silicon dioxide, 0.01-0.5 part of mildew preventive, 0.1-1.5 parts of char forming agent, 0.1-0.5 part of heat-resistant stabilizer, 0.1-0.2 part of defoamer, 0.1-3 parts of initiator, 17-30 parts of potassium hydroxide, 0-20 parts of solvent and 40-45 parts of deionized water.
When the fireproof glue prepared by the invention is applied to glass, the fireproof and heat-insulating performance of the fireproof glue is realized, and meanwhile, the transmittance is reduced at a certain temperature, so that the effect of shading sun and dimming is achieved. Thus, the "fire-blocking glue" may also be referred to herein as a "temperature-dependent dimming fire-blocking glue".
In addition, the "thermochromic glass" referred to in the present invention means the following glass: the color changes with the change of the environmental temperature, when the temperature is higher than the critical point, the color becomes dark, and when the temperature is lower than the critical point, the original transparent state is recovered. Generally, such glasses whose color changes cyclically with ambient temperature are also referred to as thermochromic glasses.
The nano-silica in the invention generally refers to nano-silica powder, and the particle size thereof may be 80-180nm, preferably, the particle size thereof may be 150-160 nm. For example, the particle size may be about 80nm, 90nm, 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, 160nm, 170nm, or 180 nm.
The nanosilica may have a particle size distribution index PDI of less than 0.01.
The proportion of the nano silicon dioxide can be 50-52 parts or 52-55 parts. For example, the compounding ratio of the nano silica may be 50 parts, 51 parts, 52 parts, 53 parts, 54 parts or 55 parts.
The proportion of the initiator can be 2-3 parts. For example, the initiator may be used in a proportion of 0.1 part, 0.5 part, 1.0 part, 1.5 parts, 2.0 parts, 2.5 parts, or 3.0 parts.
The proportion of the potassium hydroxide can be 17-25 parts or 25-30 parts. For example, the compounding ratio of potassium hydroxide may be 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 25 parts, 27 parts or 30 parts.
Further, the mildew preventive is selected from at least one of quaternary ammonium salt derivatives, cason and No. 75 mildew preventive;
the carbon forming agent is selected from at least one of sucrose, fructose, glucose and maltose;
the heat stabilizer is selected from at least one of borax and boric acid;
the defoaming agent is a polyether modified organic silicon defoaming agent;
the initiator is at least one of potassium carbonate, potassium bicarbonate, potassium fluosilicate and potassium nitrate;
the potassium hydroxide may be industrial grade potassium hydroxide having a purity of 90%.
The solvent is at least one selected from glycerol, ethylene glycol and isopropanol.
In an embodiment of the present invention, a preparation method of the fire-proof glue is further provided, including the following steps:
dissolving 0.01-0.5 part of mildew preventive, 0.1-1.5 parts of char forming agent, 0.1-0.5 part of heat-resistant stabilizer, 0.1-0.2 part of defoaming agent and 0-20 parts of solvent in 40-45 parts of deionized water in parts by weight, and mixing to form base liquid;
adding 50-55 parts of nano silicon dioxide into the base solution, and grinding and mixing to obtain a stock solution;
and slowly adding the stock solution into a mixture of 17-30 parts of potassium hydroxide and 0.1-3 parts of initiator, stirring while adding, reacting, and degassing in vacuum to obtain a precursor solution.
The obtained precursor solution, namely the fireproof glue disclosed by the embodiment of the invention, can be used for preparing fireproof glass, and the prepared fireproof glass can realize fireproof performance and color change performance of changing color along with temperature change, so that double effects of fire prevention and energy conservation are realized.
In an embodiment of the present invention, there is also provided a fire-resistant glass, as shown in fig. 1, including: the fireproof glass comprises a fire-facing glass layer 11, a fire-backing glass layer 12 and a fireproof layer 2 positioned between the fire-facing glass layer 11 and the fire-backing glass layer 12, wherein the fireproof layer 2 is formed by fireproof glue according to any embodiment of the invention.
The glass layer 11 on the fire-facing side can be float glass or toughened glass with the thickness of 3-5 mm; the back fire surface glass layer 12 can be toughened glass with the thickness of 5-10 mm.
In order to be more sensitive to temperature sensing, the thickness of the fire-blocking layer may be 0.5-2.0mm, and preferably may be 1.0-2.0 mm. For example, the fire barrier layer may have a thickness of 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, or 2.0 mm.
The fireproof glass can further comprise a toughened glass layer 5 positioned on one side of the glass layer 11 of the fire-facing surface, so that the glass layer 11 of the fire-facing surface is positioned between the toughened glass layer 5 and the fireproof layer 2, and a hollow structure is formed between the toughened glass layer 5 and the glass layer 11 of the fire-facing surface.
The hollow structure may be filled with one or more of air, krypton, argon, nitrogen, or helium. The hollow structure can reduce the color change temperature of the fireproof glass. For example, in general, the fire-proof layer changes color at a critical temperature of, for example, about 60 ℃, and after the hollow structure is included, under the direct sun-drying effect of summer sunlight due to the greenhouse effect, for example, when the ambient temperature is about 30 ℃, the temperature of the cavity in the hollow structure can reach about 60 ℃, so that the fire-proof layer starts to change color, and the applicability and the practicability of the fire-proof glass for the outer window are improved.
The thickness of the hollow structure may be 6.0 to 18mm, and preferably may be 8.0 to 16 mm. For example, the thickness of the hollow structure may be 6mm, 7mm, 8mm, 9mm, 10mm, 12mm or 16 mm.
In an embodiment of the present invention, there is also provided a method for preparing a fire-resistant glass, including the steps of:
providing a fire-facing glass layer 11 and a back fire-facing glass layer 12, wherein the fire-facing glass layer 11 can be float glass or toughened glass with the thickness of 3-5mm, and the back fire-facing glass layer 12 can be toughened glass with the thickness of 5-10 mm;
bonding a glass layer 11 on the fire side and a glass layer 12 on the back fire side through a sealant 3 and a structural adhesive 4 to form a cavity, and reserving a grouting opening, wherein the sealant 3 can be a butyl adhesive tape, and the structural adhesive 4 can be a silicone adhesive;
pouring the fireproof glue of any embodiment of the invention into a cavity formed between a fire-facing glass layer 11 and a back fire-facing glass layer 12, and then sealing to obtain a semi-finished fireproof glass product;
and (3) carrying out curing reaction on the semi-finished product of the fireproof glass to form the transparent fireproof glass, wherein the semi-finished product of the fireproof glass can be formed by heating for 2-12h at 60-80 ℃ in an oven, and the curing reaction is carried out, wherein the higher the temperature is, the shorter the time is, and a stepped heating and curing mode can also be adopted. Or can be formed by curing at normal temperature. The time required by normal temperature curing is longer, and the curing in summer requires one week.
It should be noted that the fireproof glass and the preparation method thereof provided by the embodiment of the present invention use the fireproof glue of any embodiment of the present invention as a raw material, so that the effects that the fireproof glue can achieve can also be achieved, and are not described herein again.
Generally, the fire-proof glass which can realize both the fire-proof effect and the color-changing performance of the color changing along with the temperature change can also be called as the thermochromic fire-proof glass. Specifically, the thermochromic fireproof glass has the functions of controlling flame spread and insulating smoke and heat in a fire, and also has the functions of increasing the ambient temperature, changing the glass from transparent to opaque, reducing the ambient temperature and changing the glass from opaque to transparent, so that the ultraviolet, visible and infrared light transmittance can be adjusted.
The present invention will be described in further detail with reference to the following examples. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.
Example 1: temperature-variable dimming fireproof glue and temperature-variable color-variable fireproof glass containing same
1) Preparation of temperature-variable light-adjusting fireproof glue
Dissolving 0.01g of kasong, 0.1g of fructose, 0.1g of borax, 0.1g of polyether modified organic silicon defoamer and 10g of glycerol in 40g of deionized water, and stirring and mixing to obtain a base solution;
adding 50g of nano silicon dioxide powder into the base solution, grinding and mixing to obtain a stock solution; wherein the particle size of the nano silicon dioxide is 150nm, and the particle size distribution index PDI of the nano silicon dioxide is less than 0.01;
and slowly adding the stock solution into a mixture of 0.3g of potassium carbonate and 20.74g of potassium hydroxide, stirring while adding to prevent overflow due to too fast heat release, mixing and reacting for 20min, and vacuumizing for 10min to obtain a precursor solution, wherein the precursor solution is the temperature-change dimming fireproof adhesive.
2) Preparation of thermochromic fireproof glass
Stacking the butyl adhesive tape along the position of the glass layer of the back fire surface, which is 7mm away from the edge, and reserving a grouting opening; bonding the glass layer with the thickness of 4mm on the fire-facing side with the glass layer with the thickness of 8mm on the back fire-facing side through a butyl adhesive tape, and hot-pressing to the required thickness; and filling silicone adhesive in the gap on the outer side of the butyl adhesive tape. Filling the precursor solution into a cavity with the thickness of 0.5mm through the grouting opening, and sealing by adopting butyl rubber; and transferring the filled thermochromic fireproof glass into an oven, heating at 60 ℃ for 12 hours to perform a curing reaction, and making the thermochromic fireproof glass transparent, thereby obtaining the thermochromic fireproof glass.
Example 2: temperature-variable dimming fireproof glue and temperature-variable color-variable fireproof glass containing same
1) Preparation of temperature-variable light-adjusting fireproof glue
Dissolving 0.5g of No. 75 mildew preventive, 1.5g of glucose, 0.5g of boric acid, 0.2g of polyether modified organic silicon defoamer and 20g of ethylene glycol in 45g of deionized water, and stirring and mixing to obtain a base solution;
adding 55g of nano silicon dioxide powder into the base solution, grinding and mixing to obtain a stock solution; wherein the particle size of the nano silicon dioxide is 160nm, and the particle size distribution index PDI of the nano silicon dioxide is less than 0.01;
and slowly adding the stock solution into a mixture of 3g of potassium bicarbonate and 17g of potassium hydroxide, stirring while adding to prevent overflow due to too fast heat release, mixing and reacting for 30min, and vacuumizing for 10min to obtain a precursor solution, wherein the precursor solution is the temperature-change dimming fireproof adhesive.
2) Preparation of thermochromic fireproof glass
Stacking the butyl adhesive tape along the position of the glass layer of the back fire surface, which is 7mm away from the edge, and reserving a grouting opening; bonding the glass layer with the thickness of 3mm on the fire-facing side with the glass layer with the thickness of 10mm on the back fire-facing side through a butyl adhesive tape, and hot-pressing to the required thickness; and filling silicone adhesive in the gap on the outer side of the butyl adhesive tape. Filling the precursor solution into a cavity with the thickness of 1.5mm through the grouting opening, and sealing by adopting butyl rubber; and transferring the filled thermochromic fireproof glass into an oven, heating at 75 ℃ for 4h for curing reaction, and making the thermochromic fireproof glass transparent, thereby obtaining the thermochromic fireproof glass.
Example 3: temperature-variable dimming fireproof glue and temperature-variable color-variable fireproof glass containing same
1) Preparation of temperature-variable light-adjusting fireproof glue
Dissolving 0.3g of quaternary ammonium salt derivative, 1g of maltose, 0.3g of boric acid, 0.15g of polyether modified organic silicon defoaming agent, 5g of glycerol and 10g of isopropanol in 42g of deionized water, and stirring and mixing to obtain a base solution;
adding 52g of nano silicon dioxide powder into the base solution, grinding and mixing to obtain a stock solution; wherein the particle size of the nano silicon dioxide is 100nm, and the particle size distribution index PDI of the nano silicon dioxide is less than 0.01;
and slowly adding the stock solution into a mixture of 2g of potassium fluosilicate and 25g of potassium hydroxide, stirring while adding to prevent overflow due to too fast heat release, mixing and reacting for 25min, and vacuumizing for 12min to obtain a precursor solution, wherein the precursor solution is the temperature-variable light-adjusting fireproof adhesive.
2) Preparation of thermochromic fireproof glass
Stacking the butyl adhesive tape along the position of the glass layer of the back fire surface, which is 7mm away from the edge, and reserving a grouting opening; bonding the glass layer with the thickness of 5mm on the fire-facing side with the glass layer with the thickness of 5mm on the back fire-facing side through a butyl adhesive tape, and hot-pressing to the required thickness; and filling silicone adhesive in the gap on the outer side of the butyl adhesive tape. Filling the precursor solution into a cavity with the thickness of 2.0mm through the grouting opening, and sealing by adopting butyl rubber; and transferring the filled thermochromic fireproof glass into an oven, heating at 70 ℃ for 8h for a curing reaction to ensure that the thermochromic fireproof glass is transparent, thereby obtaining the thermochromic fireproof glass.
Example 4: temperature-variable dimming fireproof glue and temperature-variable color-variable fireproof glass containing same
1) Preparation of temperature-variable light-adjusting fireproof glue
Dissolving 0.1g of quaternary ammonium salt derivative, 0.05g of kasong, 0.2g of cane sugar, 1g of fructose, 0.2g of borax, 0.2g of boric acid, 0.15g of polyether modified organic silicon defoaming agent and 0.1g of isopropanol in 43g of deionized water, and stirring and mixing to obtain a base solution;
adding 55g of nano silicon dioxide powder into the base solution, grinding and mixing to obtain a stock solution; wherein the particle size of the nano silicon dioxide is 80nm, and the particle size distribution index PDI of the nano silicon dioxide is less than 0.01;
and slowly adding the stock solution into a mixture of 1g of potassium carbonate, 1.5g of potassium nitrate and 30g of potassium hydroxide, stirring while adding to prevent overflow due to too fast heat release, mixing and reacting for 22min, and vacuumizing for 8min to obtain a precursor solution, wherein the precursor solution is the temperature-change dimming fireproof adhesive.
2) Preparation of thermochromic fireproof glass
Stacking the butyl adhesive tape along the position of the glass layer of the back fire surface, which is 7mm away from the edge, and reserving a grouting opening; bonding the glass layer with the thickness of 4mm on the fire-facing side with the glass layer with the thickness of 7mm on the back fire-facing side through a butyl adhesive tape, and hot-pressing to the required thickness; and filling silicone adhesive in the gap on the outer side of the butyl adhesive tape. Filling the precursor solution into a cavity with the thickness of 1.2mm through the grouting opening, and sealing by adopting butyl rubber; and transferring the filled thermochromic fireproof glass into an oven, heating at 80 ℃ for 2h for a curing reaction to ensure that the thermochromic fireproof glass is transparent, thereby obtaining the thermochromic fireproof glass.
Example 5:
1) the preparation method of the temperature-change dimming fireproof adhesive is as in example 1;
2) preparation of thermochromic fireproof glass
Stacking the butyl rubber strips along the position 7mm away from the edge of the glass layer of the back fire surface, and reserving a grouting opening; bonding a fire-facing glass layer with the thickness of 5mm with a back fire-facing glass layer with the thickness of 6mm through a butyl adhesive tape, and then hot-pressing to the required thickness; and filling silicone adhesive in the gap on the outer side of the butyl adhesive tape. Filling the precursor solution into a cavity with the thickness of 1.0mm through the grouting opening, and sealing by adopting butyl rubber; and transferring the filled thermochromic fireproof glass semi-finished product into an oven, heating for 10 hours at 70 ℃, and carrying out curing reaction to ensure that the thermochromic fireproof glass is transparent, thereby obtaining the thermochromic fireproof glass. The thermochromic fireproof glass and 5mm of toughened glass are synthesized into a hollow layer, the thickness of the hollow layer is 6mm, and nitrogen can be filled into the hollow layer to form the thermochromic fireproof glass with a hollow structure. The hollow layer can adopt an aluminum spacing bar and can also adopt a warm edge spacing bar. The thickness of the toughened glass for synthesizing the hollow layer is usually 4mm or 5 mm.
Example 6:
1) the preparation method of the temperature-change dimming fireproof adhesive is as in example 1;
2) preparation of thermochromic fireproof glass
And vacuumizing the middle of the two layers of glass to manufacture a vacuum glass layer, taking the vacuum glass layer as a glass layer of a fire-facing surface, and manufacturing the thermochromic fireproof glass according to the method in the embodiment 1. The glass layer of the fire-facing surface can also be directly selected from finished vacuum glass.
Properties of thermochromic fire-resistant glasses for examples 1 to 6:
the thermochromic and fire-resistant properties of the thermochromic fire-resistant glasses of examples 1-6 were tested by conventional test methods well known to those skilled in the art and will not be described in detail herein.
The discoloration properties and fire resistance properties of the thermochromic fire-resistant glasses of examples 1-6 are shown in the following table:
as can be seen from the above tables, the thermochromic fire resistant glasses of examples 1-6 are transparent at room temperature, undergo discoloration at a critical temperature of 55-60 ℃, change in color to a milky color when the temperature is higher than that temperature, and decrease in light transmittance to 0 (i.e., opaque) in less than 12-15min, thereby providing a sunshade effect, and return to a transparent state when the temperature is lower than that temperature. After the hollow structure is added, the temperature of the color-changing environment can be reduced, for example, in the environment temperature of 35 ℃, the temperature of the hollow cavity can reach more than 60 ℃, and the color-changing phenomenon is generated. The glass layer of the fire-facing surface can be made of hollow glass or vacuum glass, if the hollow glass can reduce the environmental temperature during color change, but the vacuum glass cannot reduce the environmental temperature during color change, but the vacuum glass has better energy-saving effect than the hollow glass. Can be selected and used according to the needs.
It should be noted that the fire-resistant performance of the fire-resistant glass is gradually enhanced as the thickness of the fire-resistant layer is increased, but in the present invention, the thickness of the fire-resistant layer is set to 0.5mm to 2mm because it is more sensitive to the sensing of temperature. For Fire protection layers of this thickness, Fire resistance is generally characterized by Fire integrity (Fire integrity), i.e., the ability to prevent the penetration of flames and hot gases or the appearance of flames on a backfire surface for a period of time when one side of the Fire protection layer is exposed to a Fire under standard Fire test conditions. As can be seen from the above table, the fire resistant integrity of the fire resistant glasses of examples 1-6 can reach 120 min.
The above-described embodiment is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (10)
1. The fireproof adhesive is characterized by comprising the following raw materials in parts by weight:
50-55 parts of nano silicon dioxide, 0.01-0.5 part of mildew preventive, 0.1-1.5 parts of char forming agent, 0.1-0.5 part of heat-resistant stabilizer, 0.1-0.2 part of defoamer, 0.1-3 parts of initiator, 17-30 parts of potassium hydroxide, 0-20 parts of solvent and 40-45 parts of deionized water.
2. The fire retardant adhesive of claim 1, wherein the nanosilica has a particle size of 80-180nm, and the nanosilica has a particle size distribution index PDI of less than 0.01.
3. The fire retardant adhesive of claim 1, wherein the particle size of the nano silica is 150-160 nm.
4. The fire-proof adhesive of claim 1, 2 or 3, wherein the nano silica is 50-52 parts.
5. The fire-proof adhesive according to claim 4, wherein the initiator is 2-3 parts; and/or 17-25 parts of potassium hydroxide.
6. A fire protection adhesive according to claim 1,
the mildew preventive is selected from at least one of quaternary ammonium salt derivatives, carbazone and No. 75 mildew preventive;
the carbon forming agent is selected from at least one of sucrose, fructose, glucose and maltose;
the heat stabilizer is selected from at least one of borax and boric acid;
the defoaming agent is a polyether modified organic silicon defoaming agent;
the initiator is at least one of potassium carbonate, potassium bicarbonate, potassium fluosilicate and potassium nitrate;
the solvent is at least one selected from glycerol, ethylene glycol and isopropanol.
7. A fire resistant glass, comprising:
the fireproof glass comprises a fire-facing glass layer, a fire-backing glass layer and a fireproof layer positioned between the fire-facing glass layer and the fire-backing glass layer, wherein the fireproof layer is formed by the fireproof glue according to any one of claims 1 to 6.
8. Fire resistant glass according to claim 7, characterised in that the thickness of the fire resistant layer is 0.5-2.0 mm.
9. The fire-resistant glass according to claim 7 or 8, wherein the fire-facing glass layer is a vacuum glass layer formed by vacuumizing between two layers of glass.
10. The fire-resistant glass according to claim 7 or 8, further comprising a tempered glass layer located on one side of the fire-facing glass layer, wherein the fire-facing glass layer is located between the tempered glass layer and the fire-resistant layer, and a hollow structure is formed between the tempered glass layer and the fire-facing glass layer.
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