CN111792828B - Fireproof glass and processing method thereof - Google Patents
Fireproof glass and processing method thereof Download PDFInfo
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- CN111792828B CN111792828B CN202010720847.2A CN202010720847A CN111792828B CN 111792828 B CN111792828 B CN 111792828B CN 202010720847 A CN202010720847 A CN 202010720847A CN 111792828 B CN111792828 B CN 111792828B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/028—Tempering or quenching glass products using liquid the liquid being water-based
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention discloses fireproof glass and a processing method thereof, wherein the processing method comprises the following steps: s1, preprocessing; s2, preheating; s3, softening at high temperature: putting the glass into a heating furnace for high-temperature softening, wherein the temperature in the furnace is 650-720 ℃, and treating for 120-350S; s4, quenching treatment: A. the glass enters a primary high-pressure environment with 10-100 kPa wind pressure at a conveying speed of 220-400 mm/S, and the processing time is not more than 2.5S; B. then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the treatment time is not more than 5.5S; C. the glass substrate enters a three-stage normal pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the two-stage high pressure environment; the treatment time is not more than 8.5S; and S5, annealing. The processing method has simple steps, omits the existing chemical toughening step, reduces the production cost, and obviously improves the mechanical property and the fire resistance of the prepared fireproof glass.
Description
Technical Field
The invention relates to the technical field of fireproof glass production, in particular to fireproof glass and a processing method thereof.
Background
The fireproof glass belongs to one of building safety glass, and is widely applied to fireproof partitions, fireproof glass doors, fireproof screen doors, fireproof glass windows, steel or wooden fireproof doors and building outer walls. The fireproof glass can be divided into four types according to the structural form: the fireproof glass comprises sandwich composite fireproof glass, wired fireproof glass, hollow fireproof glass and high-strength single-sheet fireproof glass. In the existing fireproof glass, the composite fireproof glass has good heat insulation, sound insulation and pressure resistance, and the head and the horn are exposed, but the composite fireproof glass is not easy to process and transport and is easy to age under the long-time irradiation of ultraviolet rays; the single-piece fireproof glass has the advantages of light weight, easy deep processing (such as film coating, hollowing and the like), high weather resistance, ultraviolet resistance, ageing resistance and long service life, and plays an important role in the glass market. With the rapid development of science and technology, people put higher demands on the fireproof performance of fireproof glass. However, the current single-sheet fireproof glass usually mainly comprises cesium potassium glass or borosilicate glass, and the preparation of the single-sheet fireproof glass needs two processes of chemical toughening and physical toughening, so that the cost of raw materials is high, the process is complex, the productivity is low, the market price is high, the waste liquid generated in the production process pollutes the environment seriously, and the single-sheet fireproof glass does not accord with the current industrial development trend of advocating environmental friendliness.
Therefore, the existing single-sheet fireproof glass technology needs to be further optimized.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention provides a processing method for preparing fireproof glass by adopting a pure physical tempering method, which not only simplifies the processing method of the fireproof glass, reduces the cost of raw materials, improves the production efficiency, realizes streamlined operation, but also obviously improves the fire resistance of the fireproof glass.
The technical scheme of the invention is as follows:
the invention provides a processing method of fireproof glass, which comprises the following steps:
s1, pretreatment: the glass substrate is cut and then subjected to a finish grinding process.
Optionally, the glass substrate is made of float glass above automobile grade, preferably ultra-white glass. The existing float glass can be divided into architectural grade, automobile grade and mirror making grade. The ultra-white glass is ultra-transparent low-iron glass, has the advantages of light transmission of over 91.5 percent, low self-explosion rate and the like, and the prepared fireproof glass has better comprehensive performance.
Specifically, the finish grinding process of the glass substrate is a chamfering process, a round edge process or a round corner process. The fine grinding treatment of the glass substrate eliminates flaws on the side edge of the glass, avoids spontaneous explosion caused by the existence of the flaws in the physical tempering process of the glass, improves the highest surface prestress borne by the glass in the tempering process, and can be matched with the subsequent steps to produce the high-performance fireproof glass.
S2, preheating pretreatment: the glass to be treated is placed in a preheating furnace from a temperature rise of 100 ℃ every 5-10min to a temperature rise of 400-450 ℃.
S3, softening at high temperature: and (3) putting the glass subjected to the preheating treatment into a heating furnace for high-temperature softening, wherein the temperature in the heating furnace is 650-720 ℃, and treating for 120-350S.
S4, quenching treatment:
A. primary high-pressure quenching treatment: and (2) conveying the softened glass into a primary high-pressure environment (namely a wind grid area) with the wind pressure of 10-100 kPa at the conveying speed of 220-400 mm/S, wherein the treatment time is not more than 2.5S, and the temperature of the glass substrate is reduced by about 50 ℃.
Preferably, a water curtain is additionally arranged in front of the fan of the primary high-pressure air grid region for cooling, so that the air outlet temperature of the primary high-pressure air grid region is lower than room temperature, and a better cooling effect is achieved on the glass substrate. The system is also provided with a water supply device and a circulating system connected with a water curtain water outlet pipe and a water inlet pipe, and the water supply device is provided with a temperature control device for controlling the water temperature of the water curtain to be 4-10 ℃. The circulating system realizes the effect of recycling the water body in the water curtain, and reduces the use cost of the water curtain.
B. Secondary high-pressure quenching treatment: then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the treatment time is not more than 5.5S, and the temperature of the glass substrate is reduced by about 50 ℃.
C. Three-stage normal pressure quenching treatment: the glass substrate enters a three-stage normal pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the two-stage high pressure environment; the treatment time is not more than 8.5S, and the temperature of the glass substrate is reduced by 50-100 ℃.
In the process, the glass substrate is heated to 650-720 ℃ to eliminate the internal stress of the glass; when rapid primary high-pressure quenching treatment is carried out, under the condition of 10-100 kPa wind pressure, a large temperature difference is generated between the inner layer and the outer layer of the glass, the surface of the glass is shrunk, but the inner layer is not shrunk, so that the shrinkage of the surface layer of the glass is inhibited by the inner layer, the surface layer is subjected to tensile stress, and the inner layer forms compressive stress; then, when rapid two-stage and three-stage normal pressure quenching treatment is carried out, the wind pressure is gradually reduced by 30% each time, the glass surface layer is gradually cooled and contracted again and again, and the temperature difference between the inner layer and the outer layer of the glass is gradually increased, so that the tensile stress of the surface layer is increased; in the subsequent cooling process, the inner layer is cooled and contracted, and is restrained by the cooled outer layer, so that the surface layer generates great compression stress, the inner layer forms tension, and the fireproof glass is formed, so that the fireproof glass has higher mechanical strength and thermal stability and the like for resisting external impact.
Through high-pressure rapid cooling, secondary high-pressure rapid cooling and normal-pressure rapid cooling treatment, the glass is rapidly cooled for three times, larger surface stress is accumulated between the inner layer and the outer layer of the glass, and the mechanical property and the fire resistance of the glass are improved. Meanwhile, the problem of high glass self-explosion rate caused by excessive one-time rapid cooling is also avoided.
S5, annealing treatment: and cooling the glass substrate to room temperature to obtain the fireproof glass.
Preferably, the glass is transferred to an annealing furnace with the temperature of 400-450 ℃, and the temperature is gradually reduced to 100 ℃ within 20-30 min; then cooling to normal temperature under the condition of room temperature.
Preferably, on the basis of the above, the processing method of the fireproof glass further comprises the following steps:
s6, coating an anti-ultraviolet coating on the outer layer of the single piece of fireproof glass to obtain the single piece of fireproof glass with the anti-ultraviolet coating, wherein the anti-ultraviolet coating is prepared from the following components in parts by weight:
46-60 parts of N-vinyl pyrrolidone, 10-25 parts of trimethylolpropane triacrylate, 8-15 parts of phenyl o-hydroxybenzoate, 5-5 parts of light stabilizer GW-5401, 1-5 parts of nano titanium dioxide, 1-5 parts of ethanol and 1-3 parts of a flatting agent;
preferably, the leveling agent is 1-3 parts of carboxymethyl cellulose.
The working principle is as follows: the N-vinyl pyrrolidone not only can generate self-polymerization, but also can be copolymerized with trimethylolpropane triacrylate containing a large amount of unsaturated bonds, and is matched with other components to form a transparent gel material with high viscosity (difficult aging and yellowing), and the gel material is used as a main body structure of the ultraviolet-resistant coating; the o-hydroxy benzoate and the nano titanium dioxide are used as a compound ultraviolet absorbent to act synergistically with a light stabilizer and the gel material, so that the ultraviolet resistance of the ultraviolet resistant coating is improved; the added ethanol not only improves the antifreezing capacity of the coating, but also has the functions of cleaning, decontaminating and improving transparency.
Specifically, the preparation method of the ultraviolet-resistant coating comprises the following steps:
mixing N-vinyl pyrrolidone, trimethylolpropane triacrylate, phenyl ortho-hydroxybenzoate, a light stabilizer and nano titanium dioxide which are used as corresponding components, performing ball milling for 40-60 min, adding ethanol and a leveling agent, uniformly mixing to obtain a mixed liquid, uniformly spraying or coating the mixed liquid on the surface of the single piece of fireproof glass, continuously heating the glass at 60-80 ℃ for 5-8 h, and naturally cooling to obtain the single piece of fireproof glass with the anti-ultraviolet coating.
Preferably, on the basis, the processing method of the fireproof glass further comprises the following steps:
s7, pouring a flame-retardant glue solution between the two pieces of fireproof glass (or the single piece of fireproof glass with the ultraviolet-resistant coating) by a pouring method, bonding the two pieces of fireproof glass together, drying and curing, and forming a flame-retardant glue layer between the two pieces of fireproof glass to form the fireproof laminated glass.
The flame-retardant glue solution is prepared from the following components in parts by mass: 30-50 parts of phenolic resin, 10-15 parts of potassium dihydrogen phosphate, 5-10 parts of polybenzimidazole, 5-10 parts of polyborosiloxane, 1-5 parts of aluminum hydroxide, 1-5 parts of magnesium hydroxide, 1-5 parts of silane coupling agent, 1-5 parts of carboxymethyl cellulose and 20-30 parts of deionized water.
In the flame-retardant glue solution, phenolic resin and polybenzimidazole are used as excellent carbon forming agents, the carbon forming rate is as high as 60%, and the activated carbon with the heat transfer blocking effect is formed at high temperature, so that the flame-retardant glue solution is low in price and good in forming and processing performance; the monopotassium phosphate is used as a carbon forming auxiliary agent and matched with the phenolic resin, so that the carbon forming effect is improved well, and the monopotassium phosphate plays a main role in fire prevention and fire retardation in the fire retardation glue solution; aluminum hydroxide and magnesium hydroxide are used as inorganic flame retardants to be matched with the organic charring agent in a synergistic manner, so that the flame retardant effect of the flame retardant glue solution is greatly improved; the polybenzimidazole and the polyborosiloxane are matched with other components, so that the high-temperature stability of the flame-retardant glue solution and the viscosity of the flame-retardant glue solution on the surface of glass are effectively improved; the carboxymethyl cellulose is used as a leveling agent, so that the surface of the solidified flame-retardant glue solution can be more flat and smooth, and the two pieces of fireproof glass can be better attached into a whole.
The preparation method of the flame-retardant glue solution comprises the following steps: weighing all the components in corresponding parts by weight, sequentially adding the components into a stirring kettle, mixing for 30-60min at the stirring speed of 600-800r/min, sieving the mixed solution to obtain a flame-retardant glue solution, and curing the flame-retardant glue solution to obtain the flame-retardant glue layer.
The invention also provides fireproof glass prepared by the method. The granularity, the surface pressure stress and the fire resistance of the fireproof glass are greatly improved.
The invention also provides the fireproof glass with the ultraviolet-resistant coating, which is prepared by the corresponding processing method. The anti-ultraviolet coating endows the fireproof glass with better anti-ultraviolet aging performance.
The invention also provides the interlayer fireproof glass which is prepared by the corresponding processing method. The fireproof and flame-retardant performance and the explosion-proof performance of the interlayer fireproof glass are further improved on the basis of the single piece of fireproof glass.
The processing method of the fireproof glass provided by the embodiment of the invention has the following beneficial effects:
the invention provides a physical tempering method for preparing single fireproof glass, which has simple steps, omits the chemical treatment step of the existing physical and chemical tempering, can realize streamlined operation and has high production efficiency; chemical treatment liquid is omitted from the raw materials, so that the production cost is greatly reduced; through the unique quenching treatment of three successive different high-pressure sections, the glass substrate is rapidly cooled for three times, great surface stress is accumulated between the inner layer and the outer layer of the glass, the spontaneous explosion rate is reduced, the prepared fireproof glass has excellent mechanical property and fire resistance which are obviously higher than those of the existing single fireproof glass, and the weather resistance, the light transmittance and the safety are higher. The glass processing method of the invention also has the advantage of environmental protection which is not possessed by the chemical toughening method. In addition, the single piece of fireproof glass can be further processed to prepare fireproof glass with an anti-ultraviolet coating and laminated fireproof glass, so that the comprehensive performance of the fireproof glass is further improved to meet the requirements of different working environments.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The processing method of the fireproof glass provided by the embodiment comprises the following steps:
s1, pretreatment: the ultra-white glass substrate having a thickness of 6mm with the surface intact was cut and then subjected to a finish grinding process. Specifically, the finish grinding process of the glass substrate is a round edge process.
S2, preheating pretreatment: the glass to be treated is placed in a preheating furnace and heated up to 100 ℃ every 5min until the temperature is raised to 400 ℃.
S3, softening at high temperature: and (3) putting the preheated glass into a heating furnace for high-temperature softening, wherein the temperature in the furnace is 720 ℃, and treating for 120S.
S4, quenching treatment:
(1) primary high-pressure quenching treatment: the softened glass enters a primary high-pressure environment (namely a wind grid quenching area) with the wind pressure of 100kPa at the conveying speed of 400mm/S, the processing time is 1S, and the temperature of the glass substrate is reduced by about 50 ℃. And a water curtain is additionally arranged in front of the fan of the primary high-pressure air grid region for cooling, and the water temperature of the water curtain is 4 ℃.
(2) Secondary high-pressure quenching treatment: then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the treatment time is 3S, and the temperature of the glass substrate is reduced by about 50 ℃.
(3) Three-stage normal pressure quenching treatment: the glass substrate enters a three-stage normal pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the two-stage high pressure environment; the treatment time is 7S, and the temperature of the glass substrate is reduced by 50-100 ℃.
S5, annealing treatment: transferring the glass to an annealing furnace at 450 ℃, and gradually reducing the temperature to 100 ℃ within 30 min; the glass was then allowed to cool to ambient temperature at room temperature.
Example 2
The processing method of the fireproof glass provided by the embodiment comprises the following steps:
s1, preprocessing: an ultra-white glass substrate having a thickness of 7mm with a complete surface was cut, followed by a finish grinding process. Specifically, the finish grinding process of the glass substrate is a chamfering process, a round edge process or a round corner process.
S2, preheating pretreatment: the glass to be treated is placed in a preheating furnace and heated up to 100 ℃ every 8min until the temperature is raised to 450 ℃.
S3, softening at high temperature: and (3) putting the preheated glass into a heating furnace for high-temperature softening, wherein the temperature in the furnace is 700 ℃, and treating for 250S.
S4, quenching treatment:
(1) primary high-pressure quenching treatment: the softened glass is put into a primary high-pressure environment with 70kPa wind pressure at a conveying speed of 300mm/S, the processing time is 2.5S, and the temperature of the glass substrate is reduced by about 50 ℃. And a water curtain is additionally arranged in front of the fan of the primary high-pressure air grid area for cooling, and the water temperature of the water curtain is 8 ℃.
(2) Secondary high-pressure quenching treatment: then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the treatment time is 4S, and the temperature of the glass substrate is reduced by about 50 ℃.
(3) Three-stage normal pressure quenching treatment: the glass substrate enters a three-stage normal pressure environment at the same speed, and the air pressure at the stage is 70% of that of the two-stage high pressure environment; the treatment time is 6.5S, and the temperature of the glass substrate is reduced by 50-100 ℃.
S5, annealing treatment: transferring the glass to an annealing furnace at 450 ℃, and gradually cooling to 100 ℃ within 30 min; the glass was then allowed to cool to ambient temperature at room temperature.
Example 3
The processing method of the fireproof glass provided by the embodiment comprises the following steps:
s1, preprocessing: an ultra-white glass substrate having a thickness of 8mm with a complete surface was cut and then subjected to a finish grinding process. Specifically, the finish grinding process of the glass substrate is a chamfering process, a round edge process or a round corner process.
S2, preheating pretreatment: the glass to be treated is placed in a preheating furnace and heated up to 100 ℃ every 10min until the temperature is raised to 450 ℃.
S3, softening at high temperature: and (3) putting the preheated glass into a heating furnace for high-temperature softening, wherein the temperature in the furnace is 650 ℃, and treating for 350S.
S4, quenching treatment:
(1) primary high-pressure quenching treatment: the softened glass enters a primary high-pressure environment with 10kPa wind pressure at a conveying speed of 220mm/S, the processing time is 2S, and the temperature of the glass substrate is reduced by about 50 ℃. And a water curtain is additionally arranged in front of the fan of the primary high-pressure air grid area for cooling, and the water temperature of the water curtain is 10 ℃.
(2) Secondary high-pressure quenching treatment: then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the treatment time was 4.5S, and the temperature of the glass substrate was lowered by about 50 ℃.
(3) Three-stage normal pressure quenching treatment: the glass substrate enters a three-stage normal pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the two-stage high pressure environment; the treatment time is 8.5S, and the temperature of the glass substrate is reduced by 50-100 ℃.
S5, annealing treatment: transferring the glass to an annealing furnace at 400 ℃, and gradually reducing the temperature to 100 ℃ within 20 min; the glass was then allowed to cool to ambient temperature at room temperature.
Example 4
The present embodiment provides a fire-proof glass and a processing method thereof, the fire-proof glass is a single piece of fire-proof glass with an anti-uv coating obtained by coating an anti-uv coating on the basis of the foregoing embodiment 1, and the processing method thereof includes the following steps:
(1) a single sheet of fire-resistant glass was prepared according to the method of S1-S5 of example 1.
(2) Preparation of the anti-ultraviolet coating and processing of the fireproof glass:
mixing N-vinyl pyrrolidone, trimethylolpropane triacrylate, phenyl ortho-hydroxybenzoate, a light stabilizer and nano titanium dioxide which are used as corresponding components, ball-milling for 50min, adding ethanol and a leveling agent, uniformly mixing to obtain a mixed liquid (an anti-ultraviolet coating), uniformly spraying or coating the mixed liquid on the surface of the single piece of fireproof glass, continuously heating the glass at 70 ℃ for 6h, and naturally cooling to obtain the single piece of fireproof glass with the anti-ultraviolet coating.
The ultraviolet-resistant coating is prepared from the following components in parts by mass:
50 parts of N-vinyl pyrrolidone, 25 parts of trimethylolpropane triacrylate, 12 parts of phenyl o-hydroxybenzoate, 5 parts of light stabilizer GW-5403 parts, 2 parts of nano titanium dioxide, 3 parts of ethanol and 2 parts of carboxymethyl cellulose.
Example 5
The present embodiment provides a fire-proof glass and a processing method thereof, the fire-proof glass is a single piece of fire-proof glass with an anti-uv coating obtained by coating an anti-uv coating on the basis of the foregoing embodiment 1, and the processing method thereof includes the following steps:
(1) a single sheet of fire-resistant glass was prepared in accordance with the method of S1-S5 of example 1.
(2) Preparation of the anti-ultraviolet coating and processing of the fireproof glass:
mixing N-vinyl pyrrolidone, trimethylolpropane triacrylate, phenyl ortho-hydroxybenzoate, a light stabilizer and nano titanium dioxide which are used as corresponding components, ball-milling for 40min, adding ethanol and a leveling agent, uniformly mixing to obtain a mixed liquid (an anti-ultraviolet coating), uniformly spraying or coating the mixed liquid on the surface of the single piece of fireproof glass, continuously heating the glass at 60 ℃ for 8h, and naturally cooling to obtain the single piece of fireproof glass with the anti-ultraviolet coating.
The ultraviolet-resistant coating is prepared from the following components in parts by mass:
60 parts of N-vinyl pyrrolidone, 10 parts of trimethylolpropane triacrylate, 15 parts of phenyl o-hydroxybenzoate, 5 parts of light stabilizer GW-5403 parts, 5 parts of nano titanium dioxide, 3 parts of ethanol and 3 parts of carboxymethyl cellulose.
Example 6
The embodiment provides a piece of fireproof glass with an ultraviolet-resistant coating, which is obtained by coating the ultraviolet-resistant coating on the basis of the embodiment 1, and a processing method thereof, wherein the processing method comprises the following steps:
(1) a single sheet of fire-resistant glass was prepared according to the method of S1-S5 of example 1.
(2) Preparing the anti-ultraviolet coating and processing the fireproof glass:
mixing N-vinyl pyrrolidone, trimethylolpropane triacrylate, phenyl ortho-hydroxybenzoate, a light stabilizer and nano titanium dioxide which are used as corresponding components, ball-milling for 60min, adding ethanol and a leveling agent, uniformly mixing to obtain a mixed liquid (an anti-ultraviolet coating), uniformly spraying or coating the mixed liquid on the surface of the single piece of fireproof glass, continuously heating the glass at 80 ℃ for 5h, and naturally cooling to obtain the single piece of fireproof glass with the anti-ultraviolet coating.
The ultraviolet-resistant coating is prepared from the following components in parts by mass:
46 parts of N-vinyl pyrrolidone, 25 parts of trimethylolpropane triacrylate, 10 parts of phenyl o-hydroxybenzoate, 5 parts of light stabilizer GW-5403 parts, 5 parts of nano titanium dioxide, 3 parts of ethanol and 1 part of carboxymethyl cellulose.
Example 7
The embodiment provides fireproof glass and a processing method thereof, wherein the fireproof glass is fireproof laminated glass prepared on the basis of embodiment 4, and the preparation method comprises the following steps:
(1) preparing a single piece of fireproof glass with the ultraviolet-resistant coating according to the method in the example 4;
(2) and (3) pouring a flame-retardant glue solution between the two pieces of fireproof glass by a pouring method, bonding the two pieces of fireproof glass together, drying and curing, and forming a flame-retardant glue layer between the two pieces of fireproof glass to form the fireproof laminated glass. The thickness of fire-retardant glue film is 30 um.
The flame-retardant glue solution is prepared from the following components in parts by mass: 42 parts of phenolic resin, 13 parts of monopotassium phosphate, 8 parts of polybenzimidazole, 8 parts of polyborosiloxane, 3 parts of aluminum hydroxide, 3 parts of magnesium hydroxide, 2 parts of silane coupling agent, 1 part of carboxymethyl cellulose and 25 parts of deionized water.
Example 8
The embodiment provides a fireproof glass and a processing method thereof, wherein the fireproof glass is a fireproof laminated glass prepared on the basis of the embodiment 4, and the preparation method comprises the following steps:
(1) preparing a single piece of fireproof glass with the ultraviolet-resistant coating according to the method in the example 4;
(2) and (3) pouring a flame-retardant glue solution between the two pieces of the fireproof glass by a pouring method, bonding the two pieces of the fireproof glass together, drying and curing, and forming a flame-retardant glue layer between the two pieces of the fireproof glass to form the fireproof laminated glass. The thickness of fire-retardant glue film is 20 um.
The flame-retardant glue solution is prepared from the following components in parts by mass: 30 parts of phenolic resin, 15 parts of monopotassium phosphate, 10 parts of polybenzimidazole, 10 parts of polyborosiloxane, 5 parts of aluminum hydroxide, 5 parts of magnesium hydroxide, 5 parts of a silane coupling agent, 5 parts of carboxymethyl cellulose and 20 parts of deionized water.
Example 9
The embodiment provides fireproof glass and a processing method thereof, wherein the fireproof glass is fireproof laminated glass prepared on the basis of embodiment 4, and the preparation method comprises the following steps:
(1) preparing a single piece of fireproof glass with the ultraviolet-resistant coating according to the method in the example 4;
(2) and (3) pouring a flame-retardant glue solution between the two pieces of the fireproof glass by a pouring method, bonding the two pieces of the fireproof glass together, drying and curing, and forming a flame-retardant glue layer between the two pieces of the fireproof glass to form the fireproof laminated glass. The thickness of fire-retardant glue film is 40 um.
The flame-retardant glue solution is prepared from the following components in parts by mass: 50 parts of phenolic resin, 10 parts of monopotassium phosphate, 6 parts of polybenzimidazole, 5 parts of polyborosiloxane, 2 parts of aluminum hydroxide, 1.5 parts of magnesium hydroxide, 1 part of silane coupling agent, 1.5 parts of carboxymethyl cellulose and 20-30 parts of deionized water.
Comparative example 1
The cesium-potassium fireproof glass is prepared by adopting the existing chemical toughening method according to the following steps:
100kg of potassium chloride, 2kg of sodium nitrate, 1kg of cesium nitrate, 0.5kg of methylcellulose, 0.05kg of La2O3 and 50kg of water were uniformly mixed at 25 ℃ to prepare a cesium potassium salt coating solution.
Heating 6mm of ultra-white glass to 650 ℃, spraying the cesium potassium salt coating solution on the heated glass to ensure that the spraying thickness is 1mm, keeping the temperature for 250s, and then cooling at the cooling rate of 125 ℃/min to obtain the cesium potassium fireproof glass.
Comparative example 2
This comparative example differs from example 1 in that: the second-stage high-pressure quenching treatment and the third-stage normal-pressure quenching treatment were omitted, and the other steps were the same as in example 1.
Comparative example 3
In this embodiment, the fireproof glue solution is prepared by omitting monopotassium phosphate and polyborosiloxane from the fireproof glue solution of embodiment 7, and the preparation method of the fireproof laminated glass of this embodiment specifically refers to embodiment 7.
Test examples
1. According to GB15763.1-2009 "safety glass for buildings part 1: fire-resistant glass, the performance of the fire-resistant glass prepared in examples 1 to 3 and comparative examples 1 to 3 was tested, and the test results are shown in table 1;
TABLE 1 comprehensive Property test of fire-resistant glass
2. UV resistance detection
The UV resistance of the UV-resistant coated single fire-resistant glass sheets of 4 to 6 was measured according to the following measurement method, and the single fire-resistant glass sheet prepared in example 1 was used as a control.
The detection method comprises the following steps: detecting the transmittance of ultraviolet rays, visible light and infrared rays by using a NASENNS10 high-precision solar film detector; the heat transfer coefficient is tested according to the GB/T22476-2008 calculation and test of the steady-state U value (heat transfer coefficient) of the hollow glass.
The results are shown in table 2 below:
TABLE 2 ultraviolet resistance test results for fire resistant glass
3. The fire-resistant laminated glasses prepared in examples 7 to 9 were subjected to the test for fire-resistant heat-insulating property, in which the glass prepared in comparative example 3 was used as a control.
The experimental method comprises the following steps:
(1) heat insulation performance
Fixing fireproof glass with the four sides wrapped with ceramic fiber fireproof cotton at a muffle furnace opening, performing a heat insulation test on a fireproof glass sample by adopting a muffle furnace, and continuously heating the temperature in the furnace at a heating rate of 20 ℃/min; the temperature of the back fire surface of the sample is measured by 5 contact thermocouples uniformly distributed on the surface of the glass and a high-precision multichannel thermometer, and the temperature value is recorded every 1 min. The heat-insulating property of the fireproof glass is characterized by recording the surface temperature of the back of the sample at different times.
(2) Heat resistance
Before testing, the samples should be left standing at 20 ℃ for more than 6h, inspected for appearance quality and recorded for defects. And putting the sample into a constant temperature box, keeping the temperature at 50 ℃, keeping the constant temperature for 6 hours, and taking out. The samples taken out were allowed to stand at 20 ℃ for 6 hours or more, and the appearance quality was examined.
(3) Cold resistance test
Before testing, the samples should be left standing at 20 ℃ for more than 6h, inspected for appearance quality and recorded for defects. And (3) putting the sample into a constant temperature box, keeping the temperature at-20 ℃, keeping the constant temperature for 6 hours, and taking out. The samples were allowed to stand at 20 ℃ for 6 hours or more, and their appearance quality was measured, and the results are shown in Table 3.
TABLE 3 test results of fire behavior
From the test results of the three aspects, the fire resistance integrity time, the compressive stress and the number of fragments in unit area of the single fireproof glass prepared by the invention are far higher than those of the comparative example, and the fire resistance and the safety of the fireproof glass are greatly improved. On the basis, the fireproof glass is endowed with more excellent ultraviolet radiation resistance by the ultraviolet-resistant coating, and on the basis, the fireproof laminated glass is endowed with more excellent fire resistance, heat resistance and cold resistance by the flame-retardant glue layer, so that the comprehensive performance of the laminated glass is more comprehensively improved, and the application field of the laminated glass is expanded.
It should be understood that equivalents and modifications to the technical solution and inventive concept of the present invention may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. The processing method of the fireproof glass is characterized by comprising the following steps of:
s1, preprocessing: cutting the glass substrate, and then carrying out fine grinding treatment;
s2, pre-heating treatment: placing the glass to be treated in a preheating furnace, and heating to 100 ℃ every 5-10min until the temperature is raised to 400-450 ℃;
s3, softening at high temperature: putting the preheated glass into a heating furnace for high-temperature softening, wherein the temperature in the furnace is 650-720 ℃, and treating for 120-350S;
s4, quenching treatment:
A. the softened glass enters a primary high-pressure environment with the wind pressure of 10-100 kPa at the conveying speed of 220-400 mm/S, the processing time is not more than 2.5S, and the temperature of the glass substrate is reduced by about 50 ℃;
B. then, the glass substrate enters a secondary high-pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the primary high-pressure environment; the processing time is not more than 5.5S, and the temperature of the glass substrate is reduced by about 50 ℃;
C. the glass substrate enters a three-stage normal pressure environment at the same speed, and the wind pressure at the stage is 70% of that of the two-stage high pressure environment; the processing time is not more than 8.5S, and the temperature of the glass substrate is reduced by 50-100 ℃;
s5, annealing treatment: cooling the glass substrate to room temperature to obtain single fireproof glass;
s6, coating an ultraviolet-resistant coating on the outer layer of the single piece of fireproof glass to obtain the single piece of fireproof glass with the ultraviolet-resistant coating, wherein the ultraviolet-resistant coating is prepared from the following components in parts by mass:
46-60 parts of N-vinyl pyrrolidone, 10-25 parts of trimethylolpropane triacrylate, 8-15 parts of phenyl o-hydroxybenzoate, 5401-5 parts of light stabilizer GW-5 parts, 1-5 parts of nano titanium dioxide, 1-5 parts of ethanol and 1-3 parts of flatting agent.
2. The method of processing fire-resistant glass as claimed in claim 1, further comprising the steps of:
s7, pouring flame-retardant glue liquid between the two pieces of fireproof glass by a pouring method, bonding the two pieces of fireproof glass together, drying and curing, and forming a flame-retardant glue layer between the two pieces of fireproof glass to form fireproof laminated glass;
the flame-retardant glue solution is prepared from the following components in parts by mass: 30-50 parts of phenolic resin, 10-15 parts of monopotassium phosphate, 5-10 parts of polybenzimidazole, 5-10 parts of polyborosiloxane, 1-5 parts of aluminum hydroxide, 1-5 parts of magnesium hydroxide, 1-5 parts of silane coupling agent, 1-5 parts of carboxymethyl cellulose and 20-30 parts of deionized water.
3. The processing method of the fireproof glass according to claim 1, wherein in the high-pressure treatment process, a water curtain is additionally arranged in front of a fan of the primary high-pressure air grid area for cooling, and the water temperature of the water curtain is controlled to be 4-10 ℃.
4. The method of claim 1, wherein the glass substrate is automotive grade or above float glass.
5. The method for processing fire-resistant glass according to claim 1, wherein the annealing treatment specifically comprises: transferring the glass to an annealing furnace at 400-450 ℃, and gradually cooling to 100 ℃ within 20-30 min; then cooling to normal temperature under the condition of room temperature.
6. A fire-resistant glass produced by the method according to any one of claims 1 to 5.
7. A fire-resistant glass with an anti-uv coating, characterised in that it is produced by the process according to claim 2.
8. A laminated fire resistant glass produced by the process of claim 3.
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| CN1519214A (en) * | 2003-09-02 | 2004-08-11 | 深圳市蛇口龙电安全技术研究有限公司 | Superbardness fire resisting glass as well as preparing method and special equipment |
| CN1693246A (en) * | 2005-02-21 | 2005-11-09 | 何志强 | Method for mfg. high strengthening environmental protection fireproof glass |
| CN101092286A (en) * | 2006-06-19 | 2007-12-26 | 福清市新福兴玻璃有限公司 | Method for producing fire-resisting glass and dedicated production equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3423298A1 (en) * | 1984-06-23 | 1986-01-16 | Schott Glaswerke, 6500 Mainz | Fireproof glazing |
| CN1242948C (en) * | 2004-04-09 | 2006-02-22 | 魏景军 | Method for fabricuting single piece of fire-resisting glass |
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| CN1519214A (en) * | 2003-09-02 | 2004-08-11 | 深圳市蛇口龙电安全技术研究有限公司 | Superbardness fire resisting glass as well as preparing method and special equipment |
| CN1693246A (en) * | 2005-02-21 | 2005-11-09 | 何志强 | Method for mfg. high strengthening environmental protection fireproof glass |
| CN101092286A (en) * | 2006-06-19 | 2007-12-26 | 福清市新福兴玻璃有限公司 | Method for producing fire-resisting glass and dedicated production equipment |
| CN104276769A (en) * | 2014-09-03 | 2015-01-14 | 宁波市合鑫玻璃科技有限公司 | Production process of Low-E (Low-Emissivity) laminated tempered glass by dry method |
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