CN109721915B

CN109721915B - Fireproof layer material, preparation method thereof and fireproof glass

Info

Publication number: CN109721915B
Application number: CN201811512439.7A
Authority: CN
Inventors: 穆元春; 杜大艳; 徐志伟; 徐磊; 付静
Original assignee: China Building Materials Academy CBMA
Current assignee: China Building Materials Academy CBMA
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2020-11-27
Anticipated expiration: 2038-12-11
Also published as: CN109721915A

Abstract

The invention relates to a fireproof layer material, a preparation method thereof and fireproof glass. The fireproof layer material comprises the following raw materials in parts by weight: 50-300 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 50-200 parts of deionized water, 5-200 parts of anti-condensing agent, 0.5-6 parts of carbon forming auxiliary agent, 0.5-6 parts of heat-resistant stabilizer, 0.05-1 part of ion fixing agent, 0.3-1.2 parts of storage stabilizer, 0.1-0.4 part of defoaming agent, 0.4-1.6 parts of plasticizer, 0.2-1.2 parts of cross-linking agent and 30-250 parts of potassium hydroxide aqueous solution with mass percentage concentration of 50%, wherein the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles. The invention has the characteristic of shear thinning, and can fill a thinner glass cavity. The composite fireproof glass prepared from the fireproof layer material has the advantages of no micro bubbles, good adhesive force, high hardness, high transmittance, long fireproof time and low temperature resistance.

Description

Fireproof layer material, preparation method thereof and fireproof glass

Technical Field

The invention relates to the field of safety glass, in particular to a fireproof layer material, a preparation method thereof and fireproof glass.

Background

As urbanization progresses faster and faster, the building windows of houses become larger and larger. Elegant and beautiful glass components with safe functions are gradually favored by designers at home and abroad, which directly leads to the rapid development of various kinds of safety glass and special glass in the building glass industry. The architectural glass has been developed from being used as a lighting and decorative material to a multifunctional composite material with light control, room temperature adjustment, noise reduction, and living environment improvement.

The fire-proof glass has certain properties of common glass, and also has the properties of controlling fire spread, insulating smoke, insulating heat 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 fire of some well-known large buildings at home and abroad, people gradually pay attention to the research, development, production and use effects of the composite fireproof glass. The poor cold resistance is one of the main factors restricting the application of the composite fireproof glass, so that the development of the high-performance composite fireproof glass with excellent low-temperature resistance and ultraviolet radiation resistance realizes the leap of the performance quality of products, expands the application area of the products and is an important direction for the industrial development of safety glass.

At present, the work done to the special fireproof layer material for the composite fireproof glass in China is in the stage of basic research. The existing composite fireproof glass has poor low-temperature service performance, most products can freeze and turn white under the low-temperature condition, and the long-term use requirements for outdoor windows and curtain walls cannot be met in northern cold regions; the main component of the fire-proof layer material of the existing composite fire-proof glass is limited by factors such as self viscosity, leveling property and the like, so that the fire-proof layer material is easy to form a thickness difference in the preparation process, and the surface of the fire-proof layer is uneven; meanwhile, the fireproof layer of the existing composite fireproof glass easily generates bubbles, so that a large number of micro bubbles are easily stored in the interlayer, the actual fireproof effect of the fireproof layer is reduced due to the existence of the micro bubbles, and the apparent quality of the composite fireproof glass is poor; the existing composite fireproof glass also has the problems of insufficient hardness of a fireproof layer and the like, and the use effect and the service life of the composite fireproof glass are seriously influenced.

Disclosure of Invention

The invention mainly aims to provide a fireproof layer material, a preparation method thereof and fireproof glass, and overcomes the defects that the fireproof layer material in the prior art is poor in low-temperature resistance and adhesion, a glass interlayer is prone to generate a large number of micro bubbles, the apparent quality is poor and the like.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.

According to the invention, the fireproof layer material comprises the following raw materials in parts by weight: 50-300 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 50-200 parts of deionized water, 5-200 parts of anti-condensing agent, 0.5-6 parts of carbon forming auxiliary agent, 0.5-6 parts of heat-resistant stabilizer, 0.05-1 part of ion fixing agent, 0.3-1.2 parts of storage stabilizer, 0.1-0.4 part of defoaming agent, 0.4-1.6 parts of plasticizer, 0.2-1.2 parts of cross-linking agent and 30-250 parts of potassium hydroxide aqueous solution with the mass percentage concentration of 50%; the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, the core layer substance is gas-phase nano silicon dioxide particles and coacervate thereof, and the shell layer substance is poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Preferably, the fireproof layer material comprises the following raw materials in parts by weight: 100-150 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 70-100 parts of deionized water, 20-50 parts of anti-condensing agent, 1-3 parts of carbon forming auxiliary agent, 1-3 parts of heat-resistant stabilizer, 0.1-0.5 part of ion fixing agent, 0.4-0.6 part of storage stabilizer, 0.1-0.2 part of defoaming agent, 0.4-0.8 part of plasticizer, 0.4-0.6 part of cross-linking agent and 60-150 parts of potassium hydroxide aqueous solution with mass percentage concentration of 50%.

Preferably, in the fire-retardant layer material, the particle size of the hydrophilic organic/inorganic hybrid particles with the nano core-shell structure is 50nm-6060nm, the particle size of the core layer is 30nm-6000nm, and the particle size distribution is multimodal and wide; the thickness of the shell layer is 20nm-40 nm.

Preferably, the fire-proof layer material is a fire-proof layer material, wherein the anti-condensation agent is at least one of ethylene glycol, propylene glycol, glycerol and pentaerythritol; the charring agent is at least one of sucrose, fructose, glucose, granulated sugar and maltose; the char-forming auxiliary agent is at least one of potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate and sodium hydrogen phosphate.

Preferably, the material of the fireproof layer is a material of a fireproof layer, wherein the heat stabilizer is at least one of borax and boric acid; the ion fixing agent is at least one of zinc oxide, aluminum oxide and starch; the storage stabilizer is at least one of sodium polyphosphate and potassium polyphosphate; the defoaming agent is a polyether modified organic silicon defoaming agent; the plasticizer is at least one of dipropylene glycol butyl ether and dipropylene glycol methyl ether; the cross-linking agent is at least one of sodium fluosilicate, potassium fluosilicate, aluminum fluoride, ammonium carbonate, potassium carbonate, ammonium bicarbonate and potassium bicarbonate.

The object of the present invention and the technical problem to be solved are also achieved by the following technical means.

The preparation method of the fireproof layer material provided by the invention comprises the following steps:

adding 50-300 parts by weight of hydrophilic nano core-shell structure organic/inorganic hybrid particles into 50-200 parts by weight of deionized water, and uniformly stirring to obtain a first solution; the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, the core layer substances are gas-phase nano silicon dioxide particles and coacervate thereof, and the shell layer substances are poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer;

under the condition of stirring, sequentially adding 5-200 parts by weight of anti-condensation agent, 0.5-6 parts by weight of char forming auxiliary agent, 0.5-6 parts by weight of heat-resistant stabilizer, 0.05-1 part by weight of ion fixing agent, 0.3-1.2 parts by weight of storage stabilizer, 0.1-0.4 part by weight of defoaming agent, 0.4-1.6 parts by weight of plasticizer and 0.2-1.2 parts by weight of cross-linking agent into the first solution, and uniformly stirring to obtain a base solution of a fireproof layer material;

and adding 30-250 parts by weight of a potassium hydroxide aqueous solution with the mass percentage concentration of 50% into the base solution of the fireproof layer material, vacuumizing, and uniformly stirring to obtain the fireproof layer material.

Preferably, the preparation method of the fire-retardant layer material further comprises: after the antifoaming agent is added into the first solution, stirring is carried out for at least 30 minutes at the rotating speed of 5000-6000 r/min.

Preferably, in the preparation method of the fireproof layer material, the particle size of the hydrophilic organic/inorganic hybrid particles with the nano core-shell structure is 50nm-6060nm, the particle size of the core layer is 30nm-6000nm, and the particle size distribution is multimodal and wide; the thickness of the shell layer is 20nm-40 nm.

According to the fireproof glass provided by the invention, the fireproof glass is formed by laminating at least two pieces of glass, an interlayer is arranged between the two adjacent pieces of glass, at least one interlayer is a fireproof layer, and the fireproof layer is made of the fireproof layer material.

Preferably, the fire-retardant glass is provided, wherein the thickness of the fire-retardant layer is 0.5-1.5 mm.

By the technical scheme, the fireproof layer material, the preparation method thereof and the fireproof glass provided by the invention at least have the following advantages:

1. the fireproof layer material adopts hydrophilic nano core-shell structure organic/inorganic hybrid particles as a main raw material, the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, core layer substances of the hydrophilic nano core-shell structure organic/inorganic hybrid particles are gas phase nano silicon dioxide particles and aggregates of the gas phase nano silicon dioxide particles, shell layer substances of the hydrophilic nano core-shell structure organic/inorganic hybrid particles are poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer, and after the fireproof layer material containing the raw material is contacted with glass, the fireproof layer material can corrode the surface of the glass to form a diffusion layer with a certain thickness, so that the adhesive force of a fireproof; when the glass is heated to generate cracks, the cracks cannot be expanded, so that the whole glass cannot be cracked, and the strength of the fireproof glass is greatly improved; meanwhile, the wide-distribution hydrophilic nano core-shell structure organic/inorganic hybrid particles enable the fireproof layer material to have the shear thinning characteristic, and a thinner glass cavity can be filled.

2. By adding other additives into the hydrophilic nano core-shell structure organic/inorganic hybrid particles, a synergistic effect is generated among all components of the fireproof layer material, bubbles in the interlayer of the composite fireproof glass are eliminated, and the high-performance microbubble-free low-temperature composite fireproof glass which is good in adhesive force, high in hardness up to 4H, high in transmittance of 72-85%, high in fireproof time up to about 194min and capable of being used in a low-temperature environment (-40 ℃) is prepared.

3. The reason why the fireproof layer material of the present invention has low temperature resistance is: the particle size distribution of the hydrophilic nano core-shell structure organic-inorganic hybrid particles is wider, so that the solid content of the particles is higher, and correspondingly, free water in the fireproof layer material is reduced; the organic material on the outer layer of the hydrophilic nano core-shell structure organic-inorganic hybrid particles contains hydrophilic groups, and can firmly lock free water, so that the content of free water in the fireproof layer material is further reduced; the strong hydrophilic group in the condensation inhibitor is utilized to continuously lock the free water in the fireproof layer material, thereby improving the low temperature resistance of the fireproof layer material.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a fire-resistant glass according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a fire-resistant glass according to another embodiment of the present invention;

FIG. 3 is a graph of viscosity versus shear rate for a dispersion of hydrophilic nano core-shell structured organic/inorganic hybrid particles in accordance with the present invention;

FIG. 4 is a distribution diagram of the particle size of the dispersion of the hydrophilic organic/inorganic hybrid particles with a nano core-shell structure according to the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the fire-retardant layer material, the preparation method thereof and the fire-retardant glass according to the present invention will be provided with reference to the accompanying drawings and the preferred embodiments, and the detailed description thereof, the structure, the characteristics and the effects thereof will be provided. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The invention provides a fireproof layer material which comprises the following raw materials in parts by weight: 50-300 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 50-200 parts of deionized water, 5-200 parts of anti-condensing agent, 0.5-6 parts of carbon forming auxiliary agent, 0.5-6 parts of heat-resistant stabilizer, 0.05-1 part of ion fixing agent, 0.3-1.2 parts of storage stabilizer, 0.1-0.4 part of defoaming agent, 0.4-1.6 parts of plasticizer, 0.2-1.2 parts of cross-linking agent and 30-250 parts of potassium hydroxide aqueous solution with the mass percentage concentration of 50%; the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, the core layer substances are gas-phase nano silicon dioxide particles and coacervate thereof, and the shell layer substances are poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer.

As a preferred embodiment, the material of the fireproof layer comprises the following raw materials in parts by weight: 100-150 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 70-100 parts of deionized water, 20-50 parts of anti-condensing agent, 1-3 parts of carbon forming auxiliary agent, 1-3 parts of heat-resistant stabilizer, 0.1-0.5 part of ion fixing agent, 0.4-0.6 part of storage stabilizer, 0.1-0.2 part of defoaming agent, 0.4-0.8 part of plasticizer, 0.4-0.6 part of cross-linking agent and 60-150 parts of potassium hydroxide aqueous solution with mass percentage concentration of 50%.

More preferably, the fireproof layer material comprises the following raw materials in parts by weight: 120 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 90 parts of deionized water, 40 parts of anti-condensing agent, 2 parts of char forming auxiliary agent, 2 parts of heat-resistant stabilizer, 0.3 part of ion fixing agent, 0.5 part of storage stabilizer, 0.15 part of defoaming agent, 0.6 part of plasticizer, 0.5 part of cross-linking agent and 100 parts of potassium hydroxide aqueous solution with mass percentage concentration of 50%.

As a preferred embodiment, the particle size of the hydrophilic organic/inorganic hybrid particle with the nano core-shell structure is 50nm-6060nm, the particle size of the core layer is 30nm-6000nm, and the particle size distribution is multimodal and wide; the thickness of the shell layer is 20nm-40 nm.

The invention uses hydrophilic organic/inorganic hybrid particles with a nano core-shell structure as the main raw material of the fireproof layer material, the hydrophilic organic/inorganic hybrid particles with the nano core-shell structure are wide-distribution nano particles, the particle size of the wide-distribution nano particles is 50nm-6060nm, and the particle size distribution is wide; the core layer material is gas phase nano silicon dioxide particles and an aggregate thereof, the particle size is 30nm-6000nm, and the particle size distribution is multimodal and wide; the shell material is poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer, and the thickness of the shell is 20nm-40 nm.

The hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles. The invention has the characteristic of shear thinning, and can fill a thinner glass cavity. Meanwhile, the organic-inorganic hybrid particles with the widely distributed hydrophilic nano core-shell structure have low temperature resistance.

The reason for the low temperature resistance of the wide-distribution hydrophilic nano core-shell structure organic-inorganic hybrid particle is as follows:

1. the solid content of the system of the hydrophilic nano core-shell structure organic-inorganic hybrid particles is higher, and correspondingly, free water in the fireproof layer material is reduced;

2. the organic material of the outer layer of the hydrophilic nano core-shell structure organic-inorganic hybrid particles contains hydrophilic groups, and can firmly lock free water, so that the content of free water in the fireproof layer material is further reduced.

The hydrophilic organic/inorganic hybrid particles with the nano core-shell structure exist in the form of dispersion liquid, and the mass concentration of the dispersion liquid is 35-55%.

As a preferred embodiment, the anti-condensation agent is at least one of ethylene glycol, propylene glycol, glycerol and pentaerythritol; the charring agent is at least one of sucrose, fructose, glucose, granulated sugar and maltose; the char-forming auxiliary agent is at least one of potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate and sodium hydrogen phosphate.

As a preferred embodiment, the heat stabilizer is at least one of borax and boric acid; the ion fixing agent is at least one of zinc oxide, aluminum oxide and starch; the storage stabilizer is at least one of sodium polyphosphate and potassium polyphosphate; the defoaming agent is a polyether modified organic silicon defoaming agent; the plasticizer is at least one of dipropylene glycol butyl ether and dipropylene glycol methyl ether; the cross-linking agent is at least one of sodium fluosilicate, potassium fluosilicate, aluminum fluoride, ammonium carbonate, potassium carbonate, ammonium bicarbonate and potassium bicarbonate.

The fireproof layer material provided by the invention has the following functions of the adopted raw materials:

hydrophilic nano core-shell structured organic-inorganic hybrid particles: the hydrophilic nano core-shell structure organic/inorganic hybrid particles are mixed with deionized water to form a hydrophilic nano core-shell structure organic/inorganic hybrid particle solution, and a fireproof layer material containing the solution can corrode the surface of glass to form a diffusion layer with a certain thickness after contacting the glass, so that the adhesive force of a fireproof adhesive layer and the glass is improved; when the glass is heated to generate cracks, the cracks cannot be expanded, so that the whole glass cannot be cracked, and the strength of the fireproof glass is greatly improved; meanwhile, the fireproof layer material has the characteristic of shear thinning.

The hydrophilic nano core-shell structure organic-inorganic hybrid particles adopted in the embodiment of the invention are of a core-shell structure, which means that two or more monomers are polymerized in stages or in multiple stages under certain conditions, so that different components, namely core-shell particles, are respectively enriched on the inner side or the outer side of the particles, thus different functions of the core and the shell are endowed, and the particles with excellent performance are obtained; wherein the core layerThe material is gas phase nano silicon dioxide particles, and the shell layer material is poly (methacrylic acid-acrylic acid-acrylamide) copolymer. At normal temperature or low temperature, the shell substance of the hydrophilic nano core-shell structure organic-inorganic hybrid particles in the fire-proof glue wraps the silica particles of the core substance, and the silica particles are isolated from the potassium hydroxide solution in the fire-proof glue without reaction; when the temperature is higher, namely higher than the glass transition temperature of the hydrophilic nano core-shell structure organic-inorganic hybrid particles, the hydrophilic nano core-shell structure organic-inorganic hybrid particles are changed into a rubber state from a glass state, and a potassium hydroxide solution permeates into the shell and reacts with the silicon dioxide particles to obtain a potassium silicate solution, namely potassium water glass (the structural formula of which is K)₂O·nSiO₂And n is a modulus), the silicon dioxide net-shaped framework formed after the potassium water glass is hardened has small hardness reduction at high temperature, has good flame retardance, can resist high temperature and fire, has higher hardness, and enhances the hardness and heat resistance of the composite fire-proof glass.

The hydrophilic nano core-shell structure organic-inorganic hybrid particles are wide-distribution nano particles, and the particle size of the particles is 50nm-6060 nm. The research finds that: by means of the principle of particle design, the prepared SiO with a nearly spherical core-shell structure, high solid content and low viscosity₂The dispersion liquid also has the shear thinning characteristic, and the addition of other additives does not influence the shear edge thinning characteristic of the system through the optimization of other additives, so that the prepared fire-retardant layer material also has the shear edge thinning characteristic, and the prepared fire-retardant layer material can be poured into a thinner glass cavity to make the prepared fire-retardant glass thinner.

The result and the action mechanism are different from SiO with a non-core-shell structure₂The dispersion liquid is nano SiO of the hydrophilic nano core-shell structure organic/inorganic hybrid particles of the invention as shown in FIG. 3₂Viscosity of the microparticle dispersion versus shear rate. SiO with non-core-shell structure₂Compared with the dispersion liquid, the dispersion liquid has SiO in the core-shell structure₂The solid content of (a) far exceeds the former, but two key factors affect the initial viscosity of the system: the content of silicon hydroxyl groups on the surface of the particles, the area of voids in the interior of the particles, and bothThe influence degrees of the above are far from each other. For SiO with a nearly spherical core-shell structure₂In the case of the dispersion, the silicon hydroxyl groups on the surface and the internal cavities are completely or partially wrapped by the shell polymer, so that the influence of the two factors on the viscosity of the system is greatly reduced, and the initial viscosity of the system is reduced. Those of about 400nm to 500nm consisting of several hundred SiO with increasing shear rate₂The particles are aggregated together, and small-size particles with a core-shell structure are equivalent to sliding beads in a gear, and are filled in the size of about 5-6 microns and are formed by thousands of SiO₂The particles are agglomerated together and are arranged among large-size particles with core-shell structures, so that the lubrication effect is achieved, and the larger the shear rate is, the lower the viscosity is. The following equation can be satisfied by fitting the system viscosity μ to the rotation speed V to fig. 3:

μ＝530.10277+127.92926e^{(-V/28.66183)}。

the hydrophilic nano core-shell structure organic-inorganic hybrid particle is hydrophilic, namely a shell substance is positioned on the surface of the core-shell particle due to hydrophilicity, and the hydrophilic groups can exist in an ionic form at a certain pH value and can also be in a stable state by depending on the steric hindrance effect between the hydrophilic groups and the core-shell particle₂And simultaneously contains a hydrophobic group-CH₃Therefore, part of the monomers can approximately play the role of isolating the emulsifier and also play the role of polymerizing the monomers, the glass transition temperature of the polymethacrylic acid, the polyacrylic acid and the polyacrylamide is higher (more than 100 ℃), and the copolymer is in a glass state at normal temperature according to Fox formula calculation, has certain rigidity, avoids the generation of adhesive adsorption among particles, is beneficial to the protection of silicon dioxide particles, prevents the silicon dioxide particles from agglomerating, can be uniformly dispersed in the fireproof adhesive, and can fully react with a potassium hydroxide solution.

It is important to point out that in the fire-proof layer material of the invention, the hydrophilic nano core-shell structure organic-inorganic hybrid particles have low temperature resistance, and the condensation-resistant agent only enhances the performance.

The reason why the fire-retardant layer material has low temperature resistance is:

2. the organic material on the outer layer of the hydrophilic nano core-shell structure organic-inorganic hybrid particles contains hydrophilic groups, and can firmly lock free water, so that the content of free water in the fireproof layer material is further reduced;

3. the strong hydrophilic group in the condensation inhibitor is utilized to continuously lock the free water in the fireproof layer material, thereby improving the low temperature resistance of the fireproof layer material.

Anti-condensing agent: the low molecular weight polyol is selected as the anti-condensation agent, has the function of a surfactant to a certain extent, and plays a certain defoaming and antifreezing effect.

Char-forming agent and char-forming auxiliary agent: at high temperature, the fireproof glue layer is foamed to generate pores, the charring agent and the charring auxiliary agent are charred to form long-chain charred substances, and the long-chain charred substances are deposited in the pores and can absorb a large amount of heat, so that the fireproof performance of the glass is enhanced. The carbon forming agent adopted by the embodiment of the invention is selected from at least one of sucrose, fructose, glucose and maltose, and the carbon forming agents can form long-chain carbide at high temperature; the char-forming auxiliary agent can help the char-forming agent to be quickly carbonized at high temperature; the char-forming auxiliary agent of the embodiment of the invention is selected from at least one of potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate and sodium hydrogen phosphate; when a fire disaster occurs and the temperature of the environment rises to 400-700 ℃, the carbonization auxiliary agent can generate intramolecular dehydration condensation reaction to generate sodium metaphosphate or potassium metaphosphate, the polymerization degree of the carbonization auxiliary agent is closely related to the temperature and time of the fire disaster environment, the higher the temperature and the longer the time are, the higher the polymerization degree is, a carbonization product generated by carbonization reaction of the carbonization agent under the high-temperature condition can be attached to the long-chain sodium metaphosphate or phosphate, and the long-chain carbonization product can absorb a large amount of heat, so that the fireproof performance of the glass is enhanced. In addition, the shell substance poly (methacrylic acid-acrylic acid-acrylamide) copolymer of the hydrophilic nano core-shell structure organic-inorganic hybrid particles adopted in the embodiment of the invention also has the function of a charring agent, can be charred at a high temperature to form a long-chain charred substance, absorbs a large amount of heat and enhances the fireproof performance of glass.

Defoaming agent: the composite fireproof glass has the advantages that the water, the hydrophilic organic/inorganic hybrid particles with the nano core-shell structure and the like can generate bubbles during stirring and mixing, the bubbles can exist in the fireproof adhesive layer during sheet airing, the apparent quality of the composite fireproof glass is poor, the bubbles can be eliminated by adding a proper defoaming agent, the apparent quality of the low-temperature composite fireproof glass is improved, and the polyether modified organic silicon defoaming agent with the main component property similar to that of a fireproof layer material is preferably selected.

Heat stabilizer resistance: the heat-resistant stabilizer adopted by the embodiment of the invention is selected from at least one of borax and boric acid, so that the heat resistance and transparency of the fireproof glue layer can be improved, and the thermal expansion rate of the fireproof layer material is controlled, thereby improving the chemical stability of the low-temperature type composite fireproof glass and improving the mechanical impact resistance and thermal shock resistance.

Ion fixing agent: the ionic fixing agent adopted by the embodiment of the invention is at least one selected from zinc oxide, aluminum oxide and starch; the reaction of the silica with the potassium hydroxide solution forms a potassium silicate (formula K)₂O·nSiO₂And n is a modulus), namely an aqueous solution of potassium silicate, the activity of sodium oxide or potassium oxide in the fireproof layer material can be changed by adding the ion fixing agent, and the water resistance of the fireproof layer material can be improved by adding a proper amount of amphoteric metal compound.

Storage stabilizer: the silicon dioxide reacts with the potassium hydroxide solution to form a potassium silicate aqueous solution, and the silicate has strong polymerization capacity in an alkaline aqueous solution with the pH value of 7-9, so that silicate gel is easily generated, the stability of the system is damaged, and the storage stability is reduced. The silicate can be dispersed or form a stable suspension by adding a storage stabilizer to prevent the attachment and agglomeration of the suspension; the storage stabilizer used in the embodiment of the present invention is at least one selected from sodium polyphosphate and potassium polyphosphate, wherein the polyphosphate is a polymer dielectric and has the characteristics of an inorganic surfactant, and can disperse a poorly soluble substance in a solution or form a stable suspension to prevent adhesion and agglomeration of the suspension.

Plasticizer: the plasticizer adopted in the embodiment of the invention is selected from at least one of dipropylene glycol butyl ether and dipropylene glycol methyl ether, and the plasticizer can soften the formed fireproof layer material, reduce the internal stress of the fireproof layer material, ensure that the fireproof layer material is uniformly attached to glass, and improve the apparent quality and the fireproof strength of the low-temperature type composite fireproof glass.

A crosslinking agent: the cross-linking agent adopted in the embodiment of the invention is at least one selected from sodium fluosilicate, potassium fluosilicate, aluminum fluoride, ammonium carbonate, potassium carbonate, ammonium bicarbonate and potassium bicarbonate, and the cross-linking agent can promote the reaction and hardening of the hydrophilic organic/inorganic hybrid particles with the nano core-shell structure, and improve the mechanical strength and the weather resistance of the fireproof adhesive layer of the composite fireproof glass.

The invention also provides a preparation method of the fireproof layer material, which comprises the following steps:

(1) adding 50-300 parts by weight of hydrophilic nano core-shell structure organic/inorganic hybrid particles into 50-200 parts by weight of deionized water, and uniformly stirring to obtain a first solution; the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, the core layer substances are gas-phase nano silicon dioxide particles and coacervate thereof, and the shell layer substances are poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer;

(2) under the condition of stirring, sequentially adding 5-200 parts by weight of anti-condensation agent, 0.5-6 parts by weight of char forming auxiliary agent, 0.5-6 parts by weight of heat-resistant stabilizer, 0.05-1 part by weight of ion fixing agent, 0.3-1.2 parts by weight of storage stabilizer, 0.1-0.4 part by weight of defoaming agent, 0.4-1.6 parts by weight of plasticizer and 0.2-1.2 parts by weight of cross-linking agent into the first solution, and uniformly stirring to obtain a base solution of a fireproof layer material;

(3) and adding 30-250 parts by weight of a potassium hydroxide aqueous solution with the mass percentage concentration of 50% into the base solution of the fireproof layer material, vacuumizing, and uniformly stirring to obtain the fireproof layer material.

Further, in the step (3), the stirring time is 30-60min, preferably 40 min.

As a preferred embodiment, the preparation method of the fireproof layer material further comprises: after the antifoaming agent is added into the first solution, stirring is carried out for at least 30 minutes at the rotating speed of 5000-6000 r/min.

After the defoaming agent is added, the obtained mixed solution is stirred at a high speed, so that the defoaming agent and other components can be fully mixed, and bubbles in the mixed solution can be eliminated to a greater extent.

The reason for the low temperature resistance of the wide-distribution hydrophilic nano core-shell structure organic-inorganic hybrid particles is that:

When the fireproof glue of the fireproof glass is prepared, the hydrophilic nano core-shell structure organic-inorganic hybrid particles are added into deionized water and stirred uniformly to obtain a first solution, so that the hydrophilic nano core-shell structure organic-inorganic hybrid particles are uniformly dispersed; then adding an anti-condensing agent, a char forming aid, a heat-resistant stabilizer, an ion fixing agent, a storage stabilizer, a defoaming agent, a plasticizer and a crosslinking agent into the first solution in sequence, stirring uniformly while adding, and finally stirring until the solution completely reacts, wherein the sequential addition and the uniform stirring are used for ensuring that each component is better dissolved, and simultaneously avoiding the generation of bubbles again in the system due to the difference of stirring speeds, and the stirring until the solution completely reacts is used for ensuring that the crosslinking degree meets the design requirement; and finally, adding a potassium hydroxide aqueous solution with the mass percentage concentration of 50% into the second solution, and slowly stirring under the condition of vacuumizing, so as to remove the micro-bubbles in the system by utilizing negative pressure, thereby obtaining the micro-bubble-free fireproof glue.

The base solution of the fire-proof layer material and the potassium hydroxide solution are mixed to react, so that the base solution of the fire-proof layer material and the potassium hydroxide solution are required to be stored respectively before use, the base solution of the fire-proof layer material can be stored for standby for a long time, and the quality guarantee period of the sealed and light-proof storage is not less than 180 days; and (5) conventionally storing the potassium hydroxide solution. When the fireproof layer material is used, the fireproof layer material base solution and the potassium hydroxide solution are mixed on site, and the performance of the fireproof layer material can be better ensured.

The invention also provides fireproof glass, which is formed by laminating at least two pieces of glass, wherein an interlayer is arranged between every two adjacent pieces of glass, at least one interlayer is a fireproof layer, and the fireproof layer is made of the fireproof layer material.

According to the fireproof glass provided by the embodiment of the invention, when a fire disaster occurs, the fireproof layer in the fireproof glass is rapidly foamed and expanded to form the heat-insulating fireproof heat-insulating foam layer, so that a large amount of heat generated by the fire disaster is absorbed, and the fireproof glass has good fireproof performance; the fireproof layer material prepared by the method is adopted to form the fireproof layer in the fireproof glass, so that the fireproof glass has the advantages of no micro bubbles, high transmittance and long fireproof time.

It should be noted that the glass in the present invention is glass without antireflection layer, because the fire-retardant layer material contains plasticizer, it is inevitable to drip liquid on the outer surface of the glass during factory operation, so that the plasticizer and the antireflection layer material react chemically to affect the appearance quality. The plasticizer is mainly an ether substance, and titanium dioxide in the antireflection layer has a photocatalytic effect, so that the ether substance and silicon dioxide in the antireflection layer are subjected to polycondensation reaction to form corrosion spots, and the corrosion spots cannot be wiped off.

Preferably, the number of the interlayers is at least two, wherein one interlayer is a vacuum layer, and the rest interlayers are fire-retardant layers.

More preferably, the interlayer between two adjacent pieces of glass is a fire-retardant layer.

As a preferred embodiment, as shown in fig. 1, a fire-retardant glass comprises a first glass layer 11, a first fire-retardant layer 21, a second glass layer 12, a second fire-retardant layer 22 and a third glass layer 13 in sequence, wherein the first fire-retardant layer 21 and the second fire-retardant layer 22 are made of the fire-retardant layer materials.

As another preferred embodiment, as shown in fig. 2, a fire-proof glass comprises a first glass layer 11, a first fire-proof layer 21, a second glass layer 12, a second fire-proof layer 22, a third glass layer 13, a vacuum layer 31, a fourth glass layer 14, a third fire-proof layer 23 and a fifth glass layer 15 in sequence, wherein the first fire-proof layer 21, the second fire-proof layer 22 and the third fire-proof layer 23 are made of the fire-proof layer material, the vacuum layer is formed by sealing the peripheries of two pieces of glass, vacuumizing the gap between the two pieces of glass and sealing an exhaust hole.

As a preferred embodiment, the thickness of the fire-proof layer is 0.5-1.5 mm.

The invention can control the thickness of the fireproof layer to be 0.5-1.5mm, and on the premise of ensuring the fireproof performance of the fireproof glass, the thickness of the manufactured fireproof glass is thinner, the production cost of the glass is reduced, and the application range of the glass is expanded. The fireproof layer in the fireproof glass provided by the embodiment of the invention can expand to form a porous heat insulation layer after encountering fire, the thickness of the expansion layer is about 10-15 times of the thickness of the original fireproof layer, the glass on the fire-facing surface can be firstly burst after encountering fire, and then the fireproof glue layer attached to the glass can gradually form a heat insulation layer of about 10-30 mm; if the thickness of the fireproof adhesive layer is less than 0.5mm and the fireproof adhesive layer is too thin, the formed heat insulation layer cannot isolate heat transfer within a certain time, so that the overall fireproof time is lower than a designed value; if fire prevention glue film thickness >1.5mm, the fire prevention glue film is too thick, can lead to the whole weight of fire prevention glass to increase, the cost is too big, simultaneously because the fire prevention glue film is the successive layer inflation, the inflation layer of crossing thick can lead to glass wholly to drop, reduces fire behavior on the contrary.

The fireproof glass is high-performance microbubble-free low-temperature composite fireproof glass and has the advantages of good adhesive force, 4H hardness, 72-85% transmittance, 194min fireproof time and good low-temperature resistance (-40 ℃).

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.

The reagents used in the examples of the present invention are all commercially available products.

Example 1

The embodiment provides a preparation method of a fireproof layer material, which specifically comprises the following steps:

(1) weighing the raw materials of the fireproof layer material according to the following weight percentages:

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 85kg of deionized water, 15kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%; as the particle diameters of the hydrophilic nano core-shell structure organic/inorganic hybrid particles are in wide distribution, core layer particles with various particle diameters can exist in the invention, as shown in figure 4, SiO of the hydrophilic nano core-shell structure organic/inorganic hybrid particles₂The particle size distribution of the dispersion showed a bimodal state, and similarly, the particle size distribution of the core layer fine particles in the following examples was also broad;

(2) preparing a fireproof layer material by the following steps:

adding 100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm into a container containing 85kg of deionized water, and stirring for 2 hours to uniformly disperse the hydrophilic nano core-shell structure organic/inorganic hybrid particles to form a first solution;

adding 15kg of ethylene glycol into the first solution, and continuing stirring;

after stirring uniformly, adding 1kg of sucrose, and continuing stirring;

after stirring uniformly, adding 1kg of potassium dihydrogen phosphate, and continuing stirring;

after stirring evenly, adding 0.5kg of borax, and continuing stirring;

after stirring evenly, adding 0.5kg of boric acid, and continuing stirring;

after stirring evenly, adding 0.3kg of alumina, and continuing stirring;

after stirring uniformly, adding 0.4kg of polyphosphate, and continuing stirring;

after stirring evenly, adding 0.1kg of defoaming agent BYK-024, and stirring at high speed for 30 minutes at 6000r/min under 5000-;

after stirring uniformly, 0.5kg of dipropylene glycol butyl ether (DPNB) is added, and stirring is continued;

after stirring uniformly, adding 0.5kg of sodium fluosilicate, and continuously stirring to obtain a base solution of the fireproof layer material;

and after uniformly stirring, adding 90kg of potassium hydroxide solution with the mass percentage concentration of 50%, vacuumizing, and slowly stirring for 30 minutes to obtain a solution, namely the fireproof layer material, and hermetically storing the solution for later use.

The embodiment of the invention also provides a method for preparing fireproof glass by using the fireproof layer material, which comprises the following steps:

(1) preparing 13 pieces of glass with the thickness of 3mm, wherein two pieces of glass are physically toughened glass;

(2) synthesizing 1 piece of physical toughened glass (outermost glass) and 1 piece of non-physical toughened glass into a cavity with the thickness of 1mm by using a fixed-thickness adhesive tape, sequentially overlapping the rest 10 pieces of non-physical toughened glass by using the fixed-thickness adhesive tape, wherein a cavity with the thickness of 1mm is formed between each piece of glass, finally laminating the other piece of physical toughened glass and the multilayer cavity glass by using the fixed-thickness adhesive tape, adding a layer of cavity with the thickness of 1mm, and ensuring that the outer surface of the multilayer cavity glass is the physical toughened glass;

(3) sequentially and quantitatively pouring the prepared fireproof layer material into the cavity of the multilayer cavity glass (13 glass 12 cavity), standing for defoaming, and sealing;

(4) and (3) putting the sealed multilayer glass into an oven, heating to about 95 ℃, heating for 60-70min, and taking out to obtain the low-temperature type composite fireproof glass.

Example 2

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80nm-6000nm, 80kg of deionized water, 20kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

(2) the above raw materials were used to prepare a fire barrier material according to the same preparation method as in example 1.

The embodiment of the invention also provides a method for preparing fireproof glass by using the fireproof layer material, which is the same as the preparation method of the embodiment 1.

Example 3

10kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 75kg of deionized water, 25kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 4

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 5

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 65kg of deionized water, 35kg of ethylene glycol, 1kg of cane sugar, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 6

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 1.5kg of cane sugar, 1.5kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 7

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 2kg of sucrose, 2kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 8

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80nm-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 0.5kg of sucrose, 0.5kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoamer 902W, 0.5kg of dipropylene glycol methyl ether (DPM), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 9

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80nm-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 0.25kg of sucrose, 0.25kg of monopotassium phosphate, 0.25kg of borax, 0.25kg of boric acid, 0.15kg of alumina, 0.2kg of polyphosphate, 0.05kg of defoamer 902W, 0.25kg of dipropylene glycol methyl ether (DPM), 0.25kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 10

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80nm-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 1kg of borax, 1kg of boric acid, 0.2kg of alumina, 0.3kg of polyphosphate, 0.1kg of defoamer 902W, 0.4kg of dipropylene glycol methyl ether (DPM), 0.5kg of sodium fluosilicate and 100kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 11

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80-6000nm, 70kg of deionized water, 30kg of ethylene glycol, 1kg of sucrose, 1kg of monopotassium phosphate, 1kg of borax, 1kg of boric acid, 0.2kg of alumina, 0.3kg of polyphosphate, 0.1kg of defoamer 902W, 0.4kg of dipropylene glycol methyl ether (DPM), 0.5kg of sodium fluosilicate and 80kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 12

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 80nm and the PDI of 0.008, 150kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 1kg of borax, 1kg of boric acid, 0.2kg of alumina, 0.3kg of polyphosphate, 0.1kg of defoamer 902W, 0.4kg of dipropylene glycol methyl ether (DPM), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 13

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 100nm and the PDI of 0.008, 150kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 14

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 120nm and the PDI of 0.008, 150kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 15

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 60nm and the PDI of 0.008, 200kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 16

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 40nm and the PDI of 0.008, 250kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 17

100kg of hydrophilic nano core-shell structure organic/inorganic hybrid particles with the particle size of 140nm and the PDI of 0.008, 150kg of deionized water, 50kg of glycerol, 1kg of sucrose, 1kg of monopotassium phosphate, 0.5kg of borax, 0.5kg of boric acid, 0.3kg of alumina, 0.4kg of polyphosphate, 0.1kg of defoaming agent BYK-024, 0.5kg of dipropylene glycol monobutyl ether (DPNB), 0.5kg of sodium fluosilicate and 90kg of potassium hydroxide aqueous solution with the mass percentage concentration of 50%;

Example 18

(1) the same materials of the fire-retardant layer material as in example 4 were weighed:

(1) preparing 11 pieces of glass with the thickness of 4mm, wherein two pieces of glass are physically toughened glass;

(2) synthesizing 1 piece of physical toughened glass (outermost glass) and 1 piece of non-physical toughened glass into a cavity with the thickness of 1mm by using a fixed-thickness adhesive tape, sequentially overlapping the rest 8 pieces of non-physical toughened glass by using the fixed-thickness adhesive tape, wherein a cavity with the thickness of 1mm is formed between each piece of glass, finally laminating the other piece of physical toughened glass and the multilayer cavity glass by using the fixed-thickness adhesive tape, adding a layer of cavity with the thickness of 1mm, and ensuring that the outer surface of the multilayer cavity glass is the physical toughened glass;

(3) sequentially and quantitatively pouring the prepared fireproof layer material into the cavity of the multilayer cavity glass (11 glass 10 cavity), standing for defoaming, and sealing;

Example 19

(1) preparing 9 pieces of glass with the thickness of 5mm, wherein two pieces of glass are physically toughened glass;

(2) synthesizing 1 piece of physical toughened glass (outermost glass) and 1 piece of non-physical toughened glass into a cavity with the thickness of 1mm by using a fixed-thickness adhesive tape, sequentially overlapping the rest 6 pieces of non-physical toughened glass by using the fixed-thickness adhesive tape, wherein a cavity with the thickness of 1mm is formed between each piece of glass, finally laminating the other piece of physical toughened glass and the multilayer cavity glass by using the fixed-thickness adhesive tape, adding a layer of cavity with the thickness of 1mm, and ensuring that the outer surface of the multilayer cavity glass is the physical toughened glass;

(3) sequentially and quantitatively pouring the prepared fireproof layer material into the cavity of the multilayer cavity glass (9 glass 8 cavity), standing for defoaming, and sealing;

Example 20

(1) preparing 7 pieces of glass with the thickness of 4mm, wherein two pieces of glass are physically toughened glass;

(2) synthesizing 1 piece of physical toughened glass (outermost glass) and 1 piece of non-physical toughened glass into a cavity with the thickness of 1mm by using a fixed-thickness adhesive tape, sequentially overlapping the rest 4 pieces of non-physical toughened glass by using the fixed-thickness adhesive tape, wherein a cavity with the thickness of 1mm is formed between each piece of glass, finally laminating the other piece of physical toughened glass and the multilayer cavity glass by using the fixed-thickness adhesive tape, adding a layer of cavity with the thickness of 1mm, and ensuring that the outer surface of the multilayer cavity glass is the physical toughened glass;

(3) sequentially and quantitatively pouring the prepared fireproof layer material into the cavity of the multilayer cavity glass (7-glass 6-cavity), standing for defoaming, and sealing;

Comparative example 1

The comparative example provides a fire barrier material made from pure potash water glass with a modulus of 3.4.

The comparative example also provides a method for preparing the fireproof glass by using the fireproof layer material, which is the same as the preparation method of the example 1, and the composite fireproof glass with the same structure as the example 1 is prepared.

Comparative example 2

The comparative example provides a method of preparing a fire barrier material, comprising the steps of:

1kg of water and 1kg of potash water glass with the modulus of 3.4 are taken and mixed evenly to form the fireproof layer material.

Carrying out a fire resistance test on the low-temperature type composite fire-proof glass prepared by the fire-proof layer materials provided by examples 1-20 and comparative examples 1-2 according to a GB/T12513-2006 glazed member fire resistance test method to obtain the fire resistance time of the fire-proof glass, wherein 4 parallel samples are taken in the test, and the average value of the data is taken as the test result; the transmittance of each fireproof glass is obtained through glass transmittance detection; and the apparent mass of each fireproof glass is obtained through visual observation. The performance parameters of the fire-resistant glasses prepared in the examples of the present invention and the comparative examples are shown in table 1.

TABLE 1 Performance parameters of fire-resistant glass

Examples	Transmittance%	Low temperature/deg.C resistance	Time to fire/min	Apparent mass	Strength of
						Example 1	72	-25	178	Without microbubbles	2H
Example 2	73	-30	181	Without microbubbles	3H
						Example 3	75	-35	186	Without microbubbles	3H
Example 4	74	-40	194	Without microbubbles	4H
						Example 5	74	-40	184	Without microbubbles	3H
Example 6	74	-40	180	Without microbubbles	3H
						Example 7	74	-40	182	Without microbubbles	3H
Example 8	74	-40	170	Without microbubbles	2H
						Example 9	74	-40	157	Without microbubbles	2H
Example 10	74	-40	164	Without microbubbles	2H
						Example 11	74	-30	175	Without microbubbles	3H
Example 12	74	-25	176	Without microbubbles	2H
						Example 13	73	-25	184	Without microbubbles	2H
Example 14	72	-25	183	Without microbubbles	2H
						Example 15	72	-15	184	Without microbubbles	2H
Example 16	72	-10	182	Without microbubbles	2H
						Example 17	72	-25	181	Without microbubbles	2H
Example 18	78	-40	162	Without microbubbles	4H
						Example 19	81	-40	125	Without microbubbles	4H
Example 20	85	-40	92	Without microbubbles	4H
						Comparative example 1	53	-4	78	With microbubbles	5B
Comparative example 2	56	-5	86	With microbubbles	4B

As can be seen from table 1, the low-temperature composite fire-proof glass provided in the embodiment of the present invention has no microbubbles, while the composite fire-proof glass prepared in the comparative example has a large amount of microbubbles inside; the fireproof time of the low-temperature type composite fireproof glass prepared by the embodiment of the invention is 1.5-2.5 times of that of the composite fireproof glass of the comparative example, and the transmittance is obviously higher than that of the composite fireproof glass of the comparative example. As explained above, the potassium water glass or pure potassium water glass is used as the fire-proof layer of the composite fire-proof glass, so that a large amount of micro bubbles are easily generated in the glass, the hardness and fire-proof heat-resistant performance of the composite fire-proof glass are reduced due to the existence of the large amount of micro bubbles, and the light transmittance and the apparent quality of the composite fire-proof glass are seriously influenced. According to the embodiment of the invention, by improving the formula of the fireproof layer and mixing the hydrophilic nano core-shell structure organic-inorganic hybrid particles and the potassium hydroxide aqueous solution, a synergistic effect is generated among all components of the fireproof layer, bubbles in the interlayer of the composite fireproof glass are eliminated, the composite fireproof glass has good fireproof and heat-resistant performances, and meanwhile, the low-temperature resistance of the composite fireproof glass is improved, so that the composite fireproof glass can be used under the condition of a low-temperature environment (-40 ℃). The composite fireproof glass prepared by the embodiment of the invention has the advantages of no micro bubbles, good adhesive force, high transmittance, long fireproof time and low temperature resistance.

Comparing examples 12 to 17 with other examples, it can be seen that the width of the particle size distribution of the hydrophilic organic/inorganic hybrid particles having a nano core-shell structure affects the low temperature resistance, and the wider the particle size distribution, the better the low temperature resistance effect, and the lower the use temperature.

As can be seen from comparison between example 4 and examples 18 to 20, when the same fire-retardant layer material is used and the number of glass layers is gradually decreased, the transmittance becomes better and the low-temperature resistance is not changed and the fire-retardant time is gradually decreased as the number of glass sheets is decreased.

The strength of the low-temperature type composite fireproof glass provided by the embodiment of the invention can reach more than 2H, and some can even reach 4H.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. The fireproof layer material is characterized by comprising the following raw materials in parts by weight: 50-300 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 50-200 parts of deionized water, 5-200 parts of anti-condensing agent, 0.5-6 parts of carbon forming auxiliary agent, 0.5-6 parts of heat-resistant stabilizer, 0.05-1 part of ion fixing agent, 0.3-1.2 parts of storage stabilizer, 0.1-0.4 part of defoaming agent, 0.4-1.6 parts of plasticizer, 0.2-1.2 parts of cross-linking agent and 30-250 parts of potassium hydroxide aqueous solution with the mass percentage concentration of 50%; the hydrophilic nano core-shell structure organic/inorganic hybrid particles are wide-distribution nano particles, the core layer substances are gas-phase nano silicon dioxide particles and coacervate thereof, and the shell layer substances are poly (methacrylic acid-acrylic acid-acrylamide-styrene) copolymer.

2. The fire barrier material according to claim 1, wherein the raw materials comprise, in parts by weight: 100-150 parts of hydrophilic nano core-shell structure organic/inorganic hybrid particles, 70-100 parts of deionized water, 20-50 parts of anti-condensing agent, 1-3 parts of carbon forming auxiliary agent, 1-3 parts of heat-resistant stabilizer, 0.1-0.5 part of ion fixing agent, 0.4-0.6 part of storage stabilizer, 0.1-0.2 part of defoaming agent, 0.4-0.8 part of plasticizer, 0.4-0.6 part of cross-linking agent and 60-150 parts of potassium hydroxide aqueous solution with mass percentage concentration of 50%.

3. The flame retardant layer material of claim 1 or 2,

the particle size of the hydrophilic nano core-shell structure organic/inorganic hybrid particle is 50nm-6060nm, the particle size of a core layer is 30nm-6000nm, and the particle size distribution is multimodal and wide; the thickness of the shell layer is 20nm-40 nm.

4. The flame retardant layer material of claim 1 or 2,

the anti-condensation agent is at least one of ethylene glycol, propylene glycol, glycerol and pentaerythritol;

the charring agent is at least one of sucrose, fructose, glucose, granulated sugar and maltose;

the char-forming auxiliary agent is at least one of potassium dihydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate and sodium hydrogen phosphate.

5. The fire barrier material of claim 1 or 2, wherein:

the heat-resistant stabilizer is at least one of borax and boric acid;

the ion fixing agent is at least one of zinc oxide, aluminum oxide and starch;

the storage stabilizer is at least one of sodium polyphosphate and potassium polyphosphate;

the defoaming agent is a polyether modified organic silicon defoaming agent;

the plasticizer is at least one of dipropylene glycol butyl ether and dipropylene glycol methyl ether;

the cross-linking agent is at least one of sodium fluosilicate, potassium fluosilicate, aluminum fluoride, ammonium carbonate, potassium carbonate, ammonium bicarbonate and potassium bicarbonate.

6. A preparation method of a fireproof layer material is characterized by comprising the following steps:

7. The method for preparing a fire barrier material of claim 6, further comprising: after the antifoaming agent is added into the first solution, stirring is carried out for at least 30 minutes at the rotating speed of 5000-6000 r/min.

8. The method for producing a fire barrier material according to claim 6,

9. A fire resistant glass, wherein the fire resistant glass is formed by laminating at least two glass sheets, an interlayer is arranged between the two adjacent glass sheets, at least one interlayer is a fire resistant layer, and the fire resistant layer is made of the fire resistant layer material according to any one of claims 1 to 8.

10. Fire-resistant glass according to claim 9, characterised in that the thickness of the fire-resistant layer is 0.5-1.5 mm.