Manufacturing method of antistatic interlayer composite fireproof plate

Abstract

The invention discloses a method for manufacturing an antistatic sandwich composite fireproof plate, which comprises the following steps: providing refractory fiber paper and fireproof impregnating adhesive which comprises melamine resin, carbon black and polyvinyl alcohol fiber; refractory fiber paper is conveyed to the upper side of the impregnation frame fully impregnated with the fireproof impregnation glue, and is driven by a motor to descend and immerse into the impregnation frame; continuously conveying the fireproof fiber paper subjected to gum dipping and permeation to the drying oven for drying treatment, and then collecting the fireproof fiber paper in a winding manner; performing multi-layer high-temperature and high-pressure pressing on the dried refractory fiber paper to form a fireproof core plate; after cutting and trimming, a release film and wear-resistant paper are attached; and finally performing quality inspection and packaging. The melamine resin, the carbon black and the polyvinyl alcohol fiber are mixed to prepare the antistatic fireproof glue, the fireproof fiber paper is dip-coated with the antistatic fireproof glue, then continuous lamination is carried out, a fireproof antistatic layer is formed on a glue layer on the surface of the fiber paper, meanwhile, continuous lamination is carried out, the strength and the fireproof antistatic property of the fireproof plate are further improved, and the fireproof plate has high use safety performance.

Description

Technical Field

[0001] The invention belongs to the technical field of fireproof boards, and in particular relates to a method for manufacturing an antistatic sandwich composite fireproof board. Background Art

[0002] At present, the general fireproof board on the market is based on fireproof materials. The paste-like fireproof materials are poured into the mold, and then extruded / rolled into shape, solidified, dried in a drying room, trimmed, and packaged to produce the finished product. This kind of fireproof board is not strong, fragile, easy to break, and has no anti-static effect. It is not very safe in protecting some precision instruments and electronic equipment. When the storage materials for electronic instruments and electronic equipment are used improperly, static electricity is very easy to generate. The generation of static electricity not only affects the precision of electronic instruments and electronic equipment, but also may cause fires and cause huge losses.

[0003] Therefore, there is an urgent need to design an antistatic interlayer composite fireproof board. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a method for manufacturing an antistatic sandwich composite fireproof board, so as to avoid the trouble that the previous fireproof board does not have the antistatic function.

[0005] In order to solve the above technical problems, the present invention discloses a method for manufacturing an antistatic sandwich composite fireproof board, which comprises: Step a. Raw material preparation, providing fire-resistant fiber paper and fire-resistant impregnated adhesive, the fire-resistant impregnated adhesive comprising melamine resin, carbon black, and polyvinyl alcohol fiber, the mass ratio of the three being 10:2:3; Step b. Paper impregnation, the refractory fiber paper is transported to the upper side of the impregnation frame impregnated with fireproof impregnation glue, driven by a motor to descend and immerse in the impregnation frame, the bottom of the impregnation frame is provided with a vibration motor, the vibration motor performs high-frequency vibration on the impregnation frame, and the immersion time is 30-60 seconds; Step c. infiltration and drying, the refractory fiber paper after impregnation and infiltration is further transported to an oven for drying, and then the refractory fiber paper is collected by winding; Step d. pressing and molding, the dried refractory fiber paper is pressed under high temperature and high pressure in multiple layers to form a fireproof core board; Step e. cutting and trimming, feeding the fireproof core board into the cutting machine for cutting and trimming; Step f. Surface treatment: roll-coat the surfaces of both sides of the cut fireproof core board with polyurethane glue, and then attach release film and wear-resistant paper to both sides respectively; Step g. Quality inspection and packaging.

[0006] According to one embodiment of the present invention, at least 5 layers are pressed in the above step d, and the thickness of the fireproof core board is 1.8-25 mm.

[0007] According to one embodiment of the present invention, shock-absorbing springs are installed around the above-mentioned dipping frame.

[0008] According to one embodiment of the present invention, the temperature of the pressing molding in the above step d is 140-180° C. and the pressure is 17-25 MPa.

[0009] According to one embodiment of the present invention, the roller coating method in the above step f is mesh roller coating.

[0010] Compared with the prior art, the present invention can achieve the following technical effects: An antistatic fireproof adhesive is prepared by mixing melamine resin, carbon black, and polyvinyl alcohol fiber, which is then dipped into fire-resistant fiber paper and then laminated continuously to form a fireproof and antistatic layer on the adhesive layer on the surface of the fiber paper. Continuous lamination further improves the strength and fireproof and antistatic properties of the fireproof board, making it safer to use.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a flow chart of the method for manufacturing the antistatic sandwich composite fireproof board according to an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0014] Please refer to Figure 1 , Figure 1 It is a flow chart of the method for manufacturing the antistatic sandwich composite fireproof board according to an embodiment of the present invention.

[0015] As shown in the figure, a method for manufacturing an antistatic sandwich composite fireproof board includes: Step a. Raw material preparation, providing fire-resistant fiber paper and fire-resistant impregnated glue, the fire-resistant impregnated glue includes melamine resin, carbon black, and polyvinyl alcohol fiber, the mass ratio of the three is 10:2:3, which can ensure that the carbon black and polyvinyl alcohol fiber have maximum antistatic properties; Step b. Paper impregnation, the fire-resistant fiber paper is transported to the upper side of the impregnation frame impregnated with fire-resistant impregnation glue, driven by a motor to descend and immerse in the impregnation frame, a vibration motor is provided at the bottom of the impregnation frame, the vibration motor vibrates the impregnation frame at a high frequency, and the immersion time is 30-60 seconds; shock-absorbing springs are installed around the impregnation frame; the glue is fully impregnated and then penetrated by vibration; Step c. infiltration and drying, the refractory fiber paper after impregnation and infiltration is further transported to an oven for drying, and then the refractory fiber paper is collected by winding; Step d. pressing and molding, the dried refractory fiber paper is pressed under high temperature and high pressure in multiple layers to form a fireproof core board; Step e. cutting and trimming, feeding the fireproof core board into the cutting machine for cutting and trimming; Step f. Surface treatment: roll-coat the surfaces of both sides of the cut fireproof core board with polyurethane glue, and then attach release film and wear-resistant paper to both sides respectively. The wear-resistant paper can enhance the wear resistance of the surface of the fireproof board. The release film can be directly torn off when used, and the paper can be attached to the wall to be attached; Step g. Quality inspection and packaging.

[0016] In one embodiment of the present invention, the fire-retardant impregnated adhesive includes melamine resin, carbon black, and polyvinyl alcohol fiber, wherein the melamine resin has a high fireproof effect and is often used as a fireproof adhesive, while the carbon black and polyvinyl alcohol fiber have high antistatic properties. After mixing, they can improve the overall antistatic property of the melamine resin. At the same time, in the high temperature and high pressure reaction in step d, the carbon black has a high melting point and the polyvinyl alcohol fiber has a low melting point. The two are heat-melted and bonded to each other under high temperature and high pressure to form a high antistatic factor, which is then formed in the interlayer of the fire-resistant fiber paper after the melamine resin is cured, thereby providing the overall fireproof core board with anti-electrical properties.

[0017] In a preferred embodiment, at least 5 layers are pressed in step d, and the thickness of the fireproof core board is 1.8-25 mm to ensure sufficient strength of the fireproof core board.

[0018] The temperature of the pressing molding in step d is 140-180° C. and the pressure is 17-25 MPa. Under high temperature and high pressure, each paper layer has high bonding degree, high strength, fire resistance and antistatic properties.

[0019] The roller coating method in step f is mesh roller coating, which has good adhesion effect and strong firmness.

[0020] In summary, the present invention prepares an antistatic fireproof adhesive by mixing melamine resin, carbon black, and polyvinyl alcohol fiber, and then dips it into fire-resistant fiber paper, and then continuously laminates it so that the adhesive layer on the surface of the fiber paper forms a fireproof and antistatic layer. At the same time, continuous lamination is performed to further improve the strength and fireproof and antistatic properties of the fireproof board itself, so that it has a stronger safety performance in use.

[0021] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A method for producing an antistatic sandwich composite fireproof board, characterized in that: include: Step a. Raw material preparation, providing fire-resistant fiber paper and fire-resistant impregnated adhesive, the fire-resistant impregnated adhesive comprising melamine resin, carbon black, and polyvinyl alcohol fiber, the mass ratio of the three being 10:2:3; Step b. Paper impregnation, the refractory fiber paper is transported to the upper side of the impregnation frame impregnated with fireproof impregnation glue, driven by a motor to descend and immerse in the impregnation frame, the bottom of the impregnation frame is provided with a vibration motor, the vibration motor performs high-frequency vibration on the impregnation frame, and the immersion time is 30-60 seconds; Step c. infiltration and drying, the refractory fiber paper after impregnation and infiltration is further transported to an oven for drying, and then the refractory fiber paper is collected by winding; Step d. pressing and molding, the dried refractory fiber paper is pressed under high temperature and high pressure in multiple layers to form a fireproof core board; Step e. cutting and trimming, feeding the fireproof core board into the cutting machine for cutting and trimming; Step f. Surface treatment: roll-coat the surfaces of both sides of the cut fireproof core board with polyurethane glue, and then attach release film and wear-resistant paper to both sides respectively; Step g. Quality inspection and packaging.

2. The method for producing an antistatic sandwich composite fireproof board according to claim 1, characterized in that: In the step d, at least 5 layers are pressed, and the thickness of the fireproof core board is 1.8-25 mm.

3. The method for producing an antistatic sandwich composite fireproof board according to claim 1, characterized in that: Shock-absorbing springs are installed around the dipping frame.

4. The method for producing an antistatic sandwich composite fireproof board according to claim 1, characterized in that: The temperature of the pressing process in step d is 140-180° C. and the pressure is 17-25 MPa.

5. The method for producing an antistatic sandwich composite fireproof board according to claim 1, characterized in that: The roller coating method in step f is mesh roller coating.

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