Fire resistant glass sandwiched with a filling of flame retardant material

Abstract

The utility model discloses a kind of fireproof glass filled with interlayer flame-retardant material, it includes outer layer transparent substrate, inner layer transparent substrate and composite interlayer. Composite interlayer is composed of flame-retardant core material and heat insulation film layer, flame-retardant core material fills liquid flame retardant through porous structure and is closed with sealing strip, heat insulation film layer surface is equipped with micro convex to enhance adhesion performance. The present application releases non-combustible gas by flame-retardant core material, reduces heat conduction efficiency by heat insulation film layer and positioning groove ensures accurate alignment and other designs, improves the fire resistance time limit and security of fireproof glass, applicable to high-rise building and public place, with efficient, economic characteristics.

Description

Technical Field

[0001] This utility model relates to the field of building materials and fire safety, and in particular to a fireproof glass with interlayered flame-retardant material. Background Technology

[0002] Currently, in the field of building fire protection, fire-resistant glass is widely used as an important safety material in curtain walls, partitions, and doors and windows. However, in practical use, the fire resistance of ordinary fire-resistant glass mainly relies on the single or multiple layers of glass itself and its surface coating, and its heat insulation and flame retardant capabilities have certain limitations. Especially in high-temperature environments, the air layer in the glass interlayer is prone to heating due to heat conduction, leading to a decline in the overall performance of the glass. To improve the safety and stability of fire-resistant glass, some products improve the heat insulation effect by increasing the interlayer thickness or using special materials, but this often increases the weight of the glass and places additional burdens on installation and transportation. In addition, existing interlayer materials may decompose or fail under prolonged high temperatures, further affecting the overall fire resistance time and reliability of the fire-resistant glass. Utility Model Content

[0003] The purpose of this utility model is to provide a fireproof glass with interlayered flame-retardant material, which solves the problems mentioned in the background art.

[0004] This invention is achieved by providing a fireproof glass with a sandwiched flame-retardant material. The fireproof glass mainly consists of an outer transparent substrate, an inner transparent substrate, and a composite interlayer disposed between the two substrates. The composite interlayer includes a flame-retardant core material and a heat-insulating film layer encasing the flame-retardant core material. The flame-retardant core material is designed with a porous structure to form several uniformly distributed microcavities, which are filled with a liquid flame retardant, and the liquid flame retardant is sealed and stored using a sealing strip. The heat-insulating film layer is made of a high-molecular polymer material, and its surface has several micro-protrusions to enhance adhesion to the outer and inner transparent substrates.

[0005] The outer and inner transparent substrates are fixedly connected to the heat insulation film layer using an adhesive. The adhesive is a high-temperature resistant epoxy resin with a coating thickness of 0.1mm to 0.3mm to ensure stable bonding strength even at high temperatures. Positioning grooves are provided along the edge of the heat insulation film layer, evenly distributed around the perimeter of the composite interlayer. These grooves are used for precise alignment during the installation of the outer and inner transparent substrates. The positioning grooves are 0.5mm deep and 2mm wide, effectively preventing displacement of the composite interlayer during installation.

[0006] The porous structure of the flame-retardant core material is formed by mold pressing, with a pore size ranging from 0.5mm to 1mm and a porosity of 40% to 60%, ensuring uniform distribution of the liquid flame retardant within the microcavities. The liquid flame retardant is a phosphate ester compound, characterized by low volatility and high thermal stability. Under high-temperature conditions, it decomposes to generate non-combustible gases, thus providing flame retardancy. The sealing strip is made of silicone rubber with an "I"-shaped cross-section, with both ends embedded into the microcavity openings of the flame-retardant core material, and sealed using a hot-pressing process. The sealing strip is 1mm thick and 3mm wide, maintaining good elasticity even at high temperatures to prevent leakage of the liquid flame retardant.

[0007] The micro-protrusions in the heat insulation film are hemispherical, with a diameter of 0.2 mm and a height of 0.1 mm, and the spacing between the micro-protrusions is 0.5 mm. This micro-protrusion design not only enhances the contact area between the heat insulation film and the outer and inner transparent substrates but also creates tiny air gaps, further improving the heat insulation effect. The thickness of the heat insulation film is 0.2 mm to 0.5 mm, and it contains nano-sized alumina particles to improve its heat resistance and mechanical strength.

[0008] Both the outer and inner transparent substrates are made of tempered glass, with a thickness of 5mm to 8mm, and their surfaces are treated with explosion-proof coating to improve overall impact resistance. The outer surface of the outer transparent substrate is coated with a low-emissivity film to reduce heat transfer while ensuring a light transmittance of no less than 85%. The inner surface of the inner transparent substrate has anti-slip textures, 0.1mm deep and 0.3mm wide, to increase friction during installation and prevent the glass from slipping due to improper handling.

[0009] This invention addresses the shortcomings of existing fire-resistant glass in terms of heat insulation and flame retardancy under high-temperature conditions through a composite sandwich design. The porous structure of the flame-retardant core material, combined with the filling of liquid flame retardant, allows for the rapid release of non-combustible gases in the event of a fire, forming a protective barrier and slowing the spread of flames. The micro-protrusion design of the heat-insulating film not only improves adhesion to the substrate but also further reduces heat transfer efficiency through air gaps. The application of positioning grooves ensures precise alignment of the composite sandwich during installation, preventing performance degradation due to misalignment. Furthermore, the use of sealing strips effectively prevents leakage of the liquid flame retardant, ensuring the long-term reliability of the fire-resistant glass.

[0010] This invention features a compact structure and lightweight design, making it suitable for various building scenarios, especially high-rise buildings and public places with high fire resistance requirements. By combining the aforementioned technical methods, the fire resistance time and overall safety of fire-resistant glass are significantly improved, providing an efficient and economical solution for building fire protection. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the overall structure of the present invention, showing the layered structure of the fireproof glass, including the outer transparent substrate, the inner transparent substrate, and the composite interlayer. The composite interlayer includes a flame-retardant core material and a heat-insulating film layer. The positions of the sealing strip and the positioning groove are also marked.

[0012] Figure 2 This is a magnified view of a portion of the composite sandwich layer, showing in detail the porous structure of the flame-retardant core material and the distribution of liquid flame retardant within the microcavities, and highlighting the micro-protrusions on the surface of the heat insulation film and its adhesion interface with the substrate.

[0013] Figure 3 This is a top view of the edge area of ​​the insulation film layer, showing the distribution and size characteristics of the positioning grooves, which are used to achieve precise alignment of the composite interlayer during installation.

[0014] The attached figures are labeled as follows:

[0015] 1. Outer transparent substrate; 2. Inner transparent substrate; 3. Composite interlayer; 4. Flame-retardant core material; 5. Heat insulation film layer; 6. Sealing strip; 7. Positioning groove; 8. Micro-protrusion; 9. Liquid flame retardant. Detailed Implementation

[0016] This utility model provides a fireproof glass with a sandwiched flame-retardant material filling, the specific implementation of which is described in conjunction with the appendix. Figure 1 To be continued Figure 3 Please provide a detailed explanation. For example... Figure 1 As shown, the fireproof glass consists of an outer transparent substrate 1, an inner transparent substrate 2, and a composite interlayer 3. The composite interlayer 3 includes a flame-retardant core material 4 and a heat-insulating film layer 5. The flame-retardant core material 4 is located inside the heat-insulating film layer 5. Its porous structure forms several uniformly distributed microcavities, which are filled with liquid flame retardant 9 and sealed by a sealing strip 6. The sealing strip 6 is embedded in the opening of the microcavities of the flame-retardant core material 4, and its two ends are tightly bonded to the flame-retardant core material 4 by a hot-pressing process, thereby preventing leakage of the liquid flame retardant 9 in high-temperature environments. The heat-insulating film layer 5 wraps around the flame-retardant core material 4, and its edge area is provided with positioning grooves 7 to ensure precise alignment between the composite interlayer 3 and the outer transparent substrate 1 and the inner transparent substrate 2 during installation.

[0017] Both the outer transparent substrate 1 and the inner transparent substrate 2 are made of tempered glass with a thickness of 5mm to 8mm, and their surfaces are treated with explosion-proof coating to improve impact resistance. The outer surface of the outer transparent substrate 1 is coated with a low-emissivity film to reduce heat transfer and ensure a light transmittance of no less than 85%. The inner surface of the inner transparent substrate 2 has anti-slip textures with a depth of 0.1mm and a width of 0.3mm to increase friction during installation and prevent the glass from slipping due to improper handling. The outer transparent substrate 1 and the inner transparent substrate 2 are fixedly connected to the heat insulation film layer 5 using adhesive. The adhesive is a high-temperature resistant epoxy resin with a coating thickness of 0.1mm to 0.3mm to ensure stable bonding strength even at high temperatures.

[0018] The surface of the heat insulation film layer 5 is provided with several micro-protrusions 8, such as Figure 2 As shown, the micro-protrusions 8 are hemispherical, with a diameter of 0.2 mm, a height of 0.1 mm, and a spacing of 0.5 mm. The design of the micro-protrusions 8 not only increases the contact area between the heat insulation film layer 5 and the outer transparent substrate 1 and the inner transparent substrate 2, but also creates tiny air gaps between them, further reducing heat conduction efficiency. The thickness of the heat insulation film layer 5 is 0.2 mm to 0.5 mm, and it contains nano-sized alumina particles to improve heat resistance and mechanical strength. Positioning grooves 7 are provided at the edge of the heat insulation film layer 5, such as... Figure 3 As shown, the positioning groove 7 is evenly distributed around the perimeter of the composite interlayer 3, with a depth of 0.5 mm and a width of 2 mm, which can effectively prevent the composite interlayer 3 from shifting during installation.

[0019] The porous structure of the flame-retardant core material 4 is formed by mold pressing, with a pore size ranging from 0.5 mm to 1 mm and a porosity of 40% to 60%, ensuring the uniform distribution of the liquid flame retardant 9 within the microcavity. The liquid flame retardant 9 is a phosphate ester compound, possessing low volatility and high thermal stability. Under high-temperature conditions, it decomposes to generate non-flammable gases, thus achieving a flame-retardant effect. The sealing strip 6 is made of silicone rubber, with an I-shaped cross-section, a thickness of 1 mm, and a width of 3 mm. It maintains good elasticity under high-temperature environments, further preventing leakage of the liquid flame retardant 9.

[0020] In practical applications, the fireproof glass of this invention achieves its function through the following steps: First, the porous structure design of the flame-retardant core material 4 creates multiple microcavities within it. These microcavities are formed by mold pressing, ensuring that the pore size and porosity meet design requirements. Subsequently, liquid flame retardant 9 is injected into the microcavities and sealed by a sealing strip 6. The "I"-shaped cross-section design of the sealing strip 6 ensures that its two ends are tightly embedded into the openings of the microcavities in the flame-retardant core material 4, while the sealing effect is enhanced through a hot-pressing process. After the heat-insulating film layer 5 wraps around the flame-retardant core material 4, the micro-protrusions 8 on its surface form close contact with the outer transparent substrate 1 and the inner transparent substrate 2. The air gaps between the micro-protrusions 8 further reduce heat conduction efficiency. The outer transparent substrate 1 and the inner transparent substrate 2 are fixedly connected to the heat-insulating film layer 5 using high-temperature resistant epoxy resin. The coating thickness of the adhesive is strictly controlled within the range of 0.1mm to 0.3mm to ensure bonding strength under high-temperature conditions. During installation, the positioning grooves 7 of the composite interlayer 3 are set along the edge area. Their size and distribution are precisely designed to ensure that the composite interlayer 3 is accurately aligned between the outer transparent substrate 1 and the inner transparent substrate 2, and to avoid performance degradation due to misalignment.

[0021] This fire-resistant glass is suitable for various building scenarios, especially high-rise buildings and public places with high fire resistance requirements. For example, in the curtain wall system of high-rise buildings, the fire-resistant glass can reduce the transfer of external heat through the low-emissivity film of its outer transparent substrate 1, while the anti-slip texture of the inner transparent substrate 2 facilitates installation. When a fire occurs, the liquid flame retardant 9 in the flame-retardant core material 4 decomposes upon heating to generate non-combustible gases. These gases quickly fill the microcavities and form a protective barrier inside the glass, delaying the spread of flames. At the same time, the micro-protrusions 8 of the heat insulation film layer 5 and the air gaps work together to reduce heat conduction efficiency, further improving the overall heat insulation performance of the fire-resistant glass. In addition, the sealing strip 6 maintains good elasticity in high-temperature environments, ensuring that the liquid flame retardant 9 does not leak, thereby guaranteeing the long-term reliability of the fire-resistant glass.

[0022] This invention achieves the heat insulation and flame retardant functions of fireproof glass in high-temperature environments through the above-described technical solution. Its compact structure and lightweight design meet the needs of various practical application scenarios. The connections, positions, and cooperation between the components are carefully designed to ensure the stability and reliability of the fireproof glass during installation and use.

[0023] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0024] When installing the fireproof glass of this invention in a high-rise building curtain wall system, the outer transparent substrate 1 and the inner transparent substrate 2 are first fixedly connected to the heat insulation film layer 5 using adhesives. The adhesive is a high-temperature resistant epoxy resin, and its coating thickness is strictly controlled within the range of 0.1mm to 0.3mm to ensure stable bonding strength even at high temperatures. Positioning grooves 7 are provided on the edge area of ​​the heat insulation film layer 5. These grooves are evenly distributed around the perimeter of the composite interlayer 3, with a depth of 0.5mm and a width of 2mm, effectively preventing the composite interlayer 3 from shifting during installation. During installation, the operator uses the size and distribution of the positioning grooves 7 to ensure precise alignment of the composite interlayer 3 between the outer transparent substrate 1 and the inner transparent substrate 2, thereby avoiding performance degradation due to misalignment.

[0025] When a fire occurs, the low-emissivity film of the outer transparent substrate 1 reduces heat transfer from the outside, while the liquid flame retardant 9 in the flame-retardant core material 4 decomposes upon heating to generate non-combustible gases. The liquid flame retardant 9 is a phosphate ester compound with low volatility and high thermal stability. Under high-temperature conditions, it decomposes to generate non-combustible gases, which rapidly fill the microcavities and form a protective barrier inside the glass, slowing the spread of flames. The sealing strip 6 is made of silicone rubber with an I-shaped cross-section, a thickness of 1mm, and a width of 3mm. It maintains good elasticity under high-temperature conditions, further preventing leakage of the liquid flame retardant 9 and ensuring the long-term reliability of the fireproof glass.

[0026] The surface of the heat-insulating film layer 5 has several micro-protrusions 8, each hemispherical in shape with a diameter of 0.2 mm, a height of 0.1 mm, and a spacing of 0.5 mm. The design of the micro-protrusions 8 not only increases the contact area between the heat-insulating film layer 5 and the outer transparent substrate 1 and the inner transparent substrate 2, but also creates tiny air gaps between them, further reducing heat conduction efficiency. The thickness of the heat-insulating film layer 5 is 0.2 mm to 0.5 mm, and it contains nano-sized alumina particles to improve heat resistance and mechanical strength. The micro-protrusions 8 and the air gaps work together to significantly improve the overall heat insulation performance of the fireproof glass.

[0027] In addition, the inner surface of the inner transparent substrate 2 is provided with anti-slip textures, with a depth of 0.1mm and a width of 0.3mm, to increase friction during installation and prevent the glass from slipping due to improper operation. The anti-slip texture design makes the installation process more convenient and reliable, and is especially suitable for scenarios with high fire resistance requirements, such as high-rise building curtain wall systems.

[0028] Through the above steps and design principles, the fire-resistant glass of this invention achieves excellent heat insulation and flame retardant effects in practical applications. The connections, positions, and coordination between the various components have been carefully designed to ensure the stability and reliability of the fire-resistant glass during installation and use. This invention is compact and lightweight, meeting the needs of various practical application scenarios and providing an efficient and economical solution for building fire protection.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fireproof glass with interlayered flame-retardant material, characterized in that, The fireproof glass includes an outer transparent substrate (1), an inner transparent substrate (2), and a composite interlayer (3) disposed between the outer transparent substrate (1) and the inner transparent substrate (2). The composite interlayer (3) includes a flame-retardant core material (4) and a heat-insulating film layer (5) that wraps the flame-retardant core material (4). The flame-retardant core material (4) has a porous structure and forms several uniformly distributed microcavities. The microcavities are filled with liquid flame retardant (9). The openings of the microcavities are sealed by a sealing strip (6). The edge area of ​​the heat-insulating film layer (5) is provided with a positioning groove (7).

2. The fireproof glass with interlayered flame-retardant material as described in claim 1, characterized in that: The outer transparent substrate (1) and the inner transparent substrate (2) are fixedly connected to the heat insulation film layer (5) by an adhesive. The adhesive is a high-temperature resistant epoxy resin with a coating thickness of 0.1 mm to 0.3 mm.

3. The fireproof glass with interlayered flame-retardant material according to claim 1, characterized in that: The porous structure of the flame-retardant core material (4) is formed by mold pressing, with a pore size ranging from 0.5 mm to 1 mm and a porosity of 40% to 60%. The liquid flame retardant (9) is a phosphate ester compound.

4. The fireproof glass with interlayered flame-retardant material according to claim 1, characterized in that: The sealing strip (6) is made of silicone rubber, with an "I" shaped cross section, a thickness of 1 mm, and a width of 3 mm.

5. The fireproof glass with interlayered flame-retardant material according to claim 1, characterized in that: The surface of the heat insulation film layer (5) is provided with several micro protrusions (8). The micro protrusions (8) are hemispherical, with a diameter of 0.2 mm and a height of 0.1 mm. The spacing between the micro protrusions (8) is 0.5 mm.

6. The fireproof glass with interlayered flame-retardant material according to claim 1, characterized in that: The positioning groove (7) is evenly distributed around the composite interlayer (3), with a depth of 0.5 mm and a width of 2 mm.

7. The fireproof glass with interlayered flame-retardant material according to claim 1, characterized in that: Both the outer transparent substrate (1) and the inner transparent substrate (2) are made of tempered glass with a thickness of 5 mm to 8 mm. The outer surface of the outer transparent substrate (1) is coated with a low-emissivity film, and the inner surface of the inner transparent substrate (2) is provided with anti-slip texture. The depth of the anti-slip texture is 0.1 mm and the width is 0.3 mm.

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