CN103692729B - Preparation method of composite fireproof glass - Google Patents

Abstract

The invention provides a method for preparing a composite fireproof glass, which utilizes the method of rolling or hot pressing with an abrasive tool to process the surface of the inorganic fireproof film to form a certain roughness, so as to improve the exhaust performance of the fireproof film when it is stacked in a vacuum environment. Produce highly transparent, microbubble-free cuttable fireproof glass. The cuttable composite fireproof glass obtained by the preparation method does not generate air bubbles in the lamination process, and can effectively improve product quality.

Description

A kind of preparation method of composite fireproof glass

technical field

The invention relates to the field of inorganic composite fireproof materials, in particular to a preparation method of composite fireproof glass.

Background technique

Cuttable composite fireproof glass is composed of ordinary white glass and inorganic fireproof film. Under normal temperature conditions, fireproof glass has high light transmittance, and under high temperature conditions, the inorganic fireproof film expands to produce a white porous substance that has the functions of thermal insulation and preventing the diffusion of smoke. Although cuttable composite fireproof glass has excellent fireproof performance, it is easy to generate air bubbles during its preparation process, which affects the visual effect of the product and restricts its application to a certain extent.

The causes of bubbles in cuttable composite fireproof glass are:

① When the fireproof film is cured, the water solvent in the water glass contains a certain amount of air, and the amount of air dissolved in the water decreases, resulting in the generation of air bubbles;

②The surface of the fireproof film is not smooth, and there are tiny concave and convex surfaces. When laminating, the convex surface is first connected and mature, resulting in the inability to exclude air inside the concave surface and forming air bubbles.

In view of this, the patent US4259273 can effectively solve the problem of air bubbles during the curing process of the fireproof film by controlling the curing speed of the fireproof film. In order to solve the bubbles generated by the lamination, the patent US4451312 utilizes the environmental lamination of water vapor. This method can improve the problem of air bubbles generated by the lamination, but the operation of removing the air contained in the water vapor is relatively complicated in the actual application process, and the equipment requires High, high cost, not suitable for mass production. Patents US4654268 and GB2258422 use vacuum lamination. The main principle is to reduce the air volume between the pre-laminated glass under high vacuum. This method can effectively reduce the size of the bubbles and reduce the size of the bubbles to the naked eye. Rate below, but this method can not effectively solve the problem of air bubbles. Patent CN102249562 uses high-pressure lamination. The main method of this method is that under high pressure conditions, the bubbles generated by the lamination will diffuse to the surroundings due to the pressure, so that the bubbles disappear. However, the main problem of this lamination method is the lamination time. If it is too long, it needs 1.5 to 3 hours, and the lamination time is too long, resulting in high production cost of the product.

To sum up, cuttable composite fireproof glass has attracted the attention of enterprises due to its excellent fireproof performance, but in its lamination, air bubbles are easily generated, resulting in a decrease in product quality.

Contents of the invention

The purpose of the present invention is to provide a preparation method of composite fireproof glass, which is to treat the surface of inorganic fireproof film and solve the problem of air bubbles in vacuum high temperature lamination.

In order to achieve the above object, the present invention adopts the following technical solutions:

A preparation method of composite fireproof glass, which comprises the following steps:

(1) Pour the water glass solution on the glass surface, and then dry it in a constant temperature and humidity environment. When the solid content of the inorganic fireproof film formed in the water glass reaches 45% to 70%, use roller pressing/mould hot pressing to make A texture structure is formed on the surface of the inorganic fireproof film, and the texture structure has regular/irregular concave and convex structures;

(2) Put another piece of glass on the glass with inorganic fireproof film, and fix the two pieces of glass around, then put it into the vacuum device, then vacuumize, and heat the vacuum device to 105 ° C ~ 110 ° C, lamination 10Min After ~15Min, stop heating and vacuuming, take out the sample, and obtain a cuttable composite fireproof glass without microbubbles.

As the present invention, it is preferred that when the inorganic fireproof film with a textured surface is prepared by rolling, the solid content of the inorganic fireproof film is between 45% and 50%, the rolling is carried out at room temperature, and the roller material is organic high Molecular material, the surface of the roller has a textured structure.

In the present invention, it is preferred that when using a mold to prepare the inorganic fireproof film with a textured structure, the solid content of the inorganic fireproof film is between 60% and 70%, and the hot pressing temperature is between 80°C and 100°C.

As the present invention, preferably, the material of the roller is PMMA, PE, PVB.

As the present invention, preferably, the convex structure is pyramidal or quadrangular.

In the present invention, preferably, in the texture structure, the concave structures are interconnected.

A preparation method of composite fireproof glass, which comprises the following steps:

(1) Coat the water glass solution with a solid content of 39% to 41% on the glass surface, and then dry it at a temperature of 50°C-60°C and a relative humidity of 60%-70%. When the solid content of the inorganic fireproof film reaches 40% to 50%, cool the inorganic fireproof film to room temperature to have plasticity, and use roller pressing/mould hot pressing to make the surface of the inorganic fireproof film form a rough surface;

(2) Place another piece of glass on the glass with inorganic fireproof film, and fix the two pieces of glass around, then put it into the vacuum device, then vacuumize, and heat the vacuum device to 100℃～110℃ for 10Min～15Min Finally, stop heating and vacuumize, take out the sample, and obtain a cuttable composite fireproof glass without microbubbles.

As the present invention, preferably, the water glass solution content that is coated on glass surface is 39.5%.

As the present invention, preferably, the vacuum device is a vacuum bag.

Compared with the prior art, the present invention has the following beneficial effects:

(1) Cuttable composite fireproof glass has attracted much attention from enterprises due to its excellent fireproof performance, but in its laminates, air bubbles are prone to occur, resulting in a decrease in product quality. This method can effectively improve this shortcoming and obtain no Microfoam cuttable composite fire-resistant glass.

(2) Due to the texture structure/rough surface formed on the surface of the inorganic fireproof film before lamination, the inorganic fireproof adhesive at the convex point is first connected and mature during the lamination process, but the concave surface is not completely connected, and the inorganic fireproof The gas inside the membrane can still be effectively removed.

(3) Since the glass is laminated in a vacuum bag in the lamination, the glass surface will be under a certain pressure, and the inorganic fireproof adhesive has certain fluidity under high temperature conditions. Diffusion from the convex surface to the concave surface, so that the fireproof glass without microbubbles can be obtained.

Description of drawings

Figure 1 is the effect diagram of the rough surface formed on the surface of the inorganic fireproof adhesive. The black part in the figure represents the convex surface, and the white part represents the concave surface.

FIG. 2 is an enlarged view of FIG. 1 .

Detailed ways

The present invention will be described in detail below in conjunction with specific examples.

It should be noted that the meaning of "/" in the full text is "or", and "inorganic fireproof adhesive film" has the same meaning as "inorganic fireproof film" and "fireproof film".

Example 1: Get a water glass solution with a solid content of 39.5%, coat it on the glass surface, and evaporate excess moisture in the water glass at 50°C and 65% relative humidity. When the solid content is 45%, use a textured roller to roll the surface of the fireproof film, and then perform heat treatment to obtain a surface-treated inorganic fireproof adhesive film. Place a piece of white glass on the glass with fireproof film, fix the four sides of the two pieces of glass, put them into a vacuum bag, vacuumize, and heat the vacuum bag to 105°C. After 15 minutes, stop heating and vacuumize, take out the sample, and obtain a cuttable composite fireproof glass without microbubbles.

Embodiment 2: Get the water glass solution, pour it on the glass surface, and evaporate excess moisture in the water glass under high temperature conditions. When the solid content is 45%, use a textured roller to roll the surface of the fireproof film, and then perform heat treatment to obtain a surface-treated inorganic fireproof adhesive film. Place a piece of white glass on the glass with fireproof film, fix the four sides of the two pieces of glass, put them into a vacuum bag, vacuumize, and heat the vacuum bag to 105°C. After 12 minutes, stop heating and vacuumize, take out the sample, and obtain a cuttable composite fireproof glass without microbubbles.

Embodiment 3: Take the water glass mixed solution, pour it on the glass surface, and evaporate excess moisture in the water glass under high temperature conditions. When the solid content is 65%, use a polytetrafluoroethylene mold with a textured surface to heat press the surface of the fireproof film at 90°C for 5 minutes, and cool to room temperature to obtain a surface-treated inorganic fireproof adhesive film. Place a piece of white glass on the glass with fireproof film, fix the four sides of the two pieces of glass, put them into a vacuum bag, vacuumize, and heat the vacuum bag to 110°C. Stop heating and vacuuming after 10 minutes, take out the Yangping, and obtain a cuttable composite fireproof glass without microbubbles.

Use roll pressing or mold hot pressing to process the surface of the inorganic fireproof film to make the surface of the inorganic fireproof adhesive form a rough surface. As shown in Figure 1, the black part represents the convex surface, and the white part represents the concave surface. Figure 2 is a partial enlarged view of Figure 1. During the lamination process, the black protruding point inorganic fireproof adhesive is firstly connected and matured, but the concave surface is not completely connected, and the gas inside the fireproof film can still be effectively eliminated. Since the glass is laminated in a vacuum bag in the lamination, the glass surface will be under a certain pressure, and the inorganic fireproof adhesive has a certain fluidity under high temperature conditions. It spreads towards the concave surface, and finally forms a fireproof glass without microbubbles.

In the present invention, water glass is selected as the substrate of the fireproof film, preferably a water glass solution with a solid content of 39%-41% is coated on the glass surface, and dried at 50°C-60°C and 60%-70% relative humidity. When the solid content of the inorganic fireproof film formed in the water glass reaches 40%-50%, cool the fireproof film to room temperature, the fireproof film has plasticity, use the rolling process to roll the film surface, the surface of the roller needs to have a specific texture, roll After the pressing is completed, the surface of the fireproof film will form a rough surface, and the fireproof film will continue to dry. When the solid content reaches 60%-65%, the fireproof film will have high strength, and a fireproof film with a rough surface will be obtained. In addition, the fireproof film can also be dried to a solid content of 60%-65% under constant temperature and humidity conditions, and hot-pressed at 80°C-90°C for 5-10 minutes by using a textured stainless steel plate or polymer plate on the surface. Cool the fireproof film to room temperature to obtain a fireproof film with a rough surface.

Place another piece of glass on the surface-treated fireproof film, place it in a vacuum bag to evacuate, and laminate it for 10-15 minutes at a temperature range of 100°C-110°C, and finally obtain a cuttable fireproof glass without microbubbles.

The above descriptions are only preferred implementations of the present invention, and the scope of protection of the present invention is not limited to the above-mentioned implementations. All technical solutions belonging to the principle of the present invention belong to the scope of protection of the present invention. For those skilled in the art, some improvements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (5)

1. a preparation method of composite fireproof glass, is characterized in that, it contains the following steps: (1) Pour the water glass solution on the glass surface, then dry it under constant temperature and constant humidity. When the solid content of the inorganic fireproof film formed in the water glass reaches 45% to 70%, use roller pressing/mould hot pressing to make A texture structure is formed on the surface of the inorganic fireproof film, and the texture structure has regular/irregular concave and convex structures; (2) Place another piece of glass on the glass with inorganic fireproof film, and fix the two pieces of glass around, then put it into the vacuum device, and then vacuumize, and heat the vacuum device to 105 ° C ~ 110 ° C, lamination 10Min After ~15Min, stop heating and vacuuming, take out the sample, and obtain a cuttable composite fireproof glass without microbubbles; The convex structure is pyramidal or quadrilateral; The concave structures are interconnected; The vacuum device is a vacuum bag. 2. The preparation method according to claim 1, characterized in that, when the inorganic fireproof film with a textured surface is prepared by roll pressing, the solid content of the inorganic fireproof film is between 45% and 50%, and the roll press is at room temperature Carry out, the roller material is an organic polymer material, and the surface of the roller has a textured structure. 3. The preparation method according to claim 1, characterized in that, when using a mold to prepare an inorganic fireproof film with a textured structure, the solid content of the inorganic fireproof film is between 60% and 70%, and the hot pressing temperature is between 80°C and between 100°C. 4. preparation method according to claim 2, is characterized in that, described roller material is PMMA, PE, PVB. 5. A preparation method for composite fireproof glass, characterized in that it contains the following steps: (1) Coat the water glass solution with a solid content of 39% to 41% on the glass surface, and then dry it at a temperature of 50°C-60°C and a relative humidity of 60%-70%. When the solid content of the inorganic fireproof film reaches 40% to 50%, cool the inorganic fireproof film to room temperature to have plasticity, and use roller pressing/mould hot pressing to make the surface of the inorganic fireproof film form a rough surface; (2) Place another piece of glass on the glass with inorganic fireproof film, and fix the two pieces of glass around, then put it into the vacuum device, then vacuumize, and heat the vacuum device to 100℃～110℃ for 10Min～15Min Finally, stop heating and vacuumize, take out the sample, and obtain a composite fireproof glass that can be cut without microbubbles; The dissolved solid content of the water glass coated on the glass surface is 39.5%; The vacuum device is a vacuum bag.