Metal composite plate prepared based on plastic fireproof material

Abstract

The invention discloses a metal composite plate prepared based on a plastic fireproof material. The invention belongs to the field of fireproof A-grade (non-combustible) metal composite plate production. The metal composite plate is composed of a core material raw material, an outer layer material and an interlayer bonding material. According to the preparation method, the edging waste materials generated in the production process can be crushed and then fed into an extruder, so that the edging waste materials can be recycled, and solid waste which needs to be treated does not exist; the preparation process is not influenced by weather and environment, and normal production can be realized only by adding particles under various conditions; the prepared plate core material has certain flexibility and can be made into various arcs; the production speed in the preparation process is high and can reach 2.8-3 m / min, and the production efficiency can be remarkably improved compared with the traditional production efficiency of 2 m / min; the temperature rise required in the production process is more energy-saving, normal compounding can be carried out at the temperature of 150 DEG C, the core material does not absorb water, and the peeling strength stability is high.

Description

Technical Field

[0001] The invention belongs to the field of production of fireproof A-grade (non-combustible grade) metal composite panels, and specifically refers to a metal composite panel prepared based on plastic fireproof materials. Background Art

[0002] In many fields such as construction and industry, the demand for fireproof metal composite panels continues to grow, and fireproof Class A (non-combustible) metal composite panels have become a key material to ensure safety. At present, the common fireproof Class A non-combustible metal composite panel preparation technology on the market is mainly produced by Class A core coils, metal coils and adhesive materials under high temperature and high pressure. However, this traditional preparation method has many disadvantages:

[0003] Problems in waste disposal: Existing core materials are mostly made of inorganic mineral powders. The edge waste generated during the production process cannot be recycled and can only be treated as solid waste, which not only increases the company's processing costs, but also creates a burden on the environment.

[0004] Poor environmental adaptability: The core material is significantly affected by temperature. In the low temperature environment in winter, the core curls are brittle and easy to break. The company needs to build an additional core material heating room to maintain its flexibility to ensure normal production, which undoubtedly increases production energy consumption and costs.

[0005] Limited modeling: The hard and brittle core material makes it difficult to shape the metal composite panel, especially when making small R-angle arcs, the core material is prone to breakage, which limits the product's appearance design and application scenarios.

[0006] Unstable performance: The existing core material has strong water absorption. In a humid environment, the peeling strength of the finished metal composite panel will be weakened, affecting product quality and safety of use.

[0007] Taking Jiangsu Alumige's A2-level fireproof core super board production line (CN104924722A) and Alubond's related technology (CN109467375A) as examples, although they have certain advantages in fireproof performance and some characteristics, they still fail to effectively solve the above problems. It can be seen that developing a new method for preparing metal composite panels based on plastic fireproof materials to overcome the shortcomings of the existing technology has important practical significance. Summary of the invention

[0008] The purpose of the present invention is to provide a metal composite plate based on plastic fireproof materials. The present invention provides a new method for preparing fireproof grade A metal composite plates, which is to load fireproof grade A plastic particles into an extruder, extrude them into a continuous core plate after heating, and press them with aluminum coils or other metal coils through a polymer film at a certain temperature and pressure. In this preparation method, the edge strip waste generated during the production process can be crushed and then fed into the extruder, which can be recycled and there is no solid waste to be treated; the preparation process is not affected by weather and environment, and normal production can be carried out as long as particles are put in under various conditions; the core material of the prepared plate has a certain flexibility and can be made into various arcs; the production speed during the preparation process is relatively high, which can reach 2.8-3 meters / minute, which can significantly improve the production efficiency compared with the traditional 2 meters / minute; the heating required during the production process is more energy-saving, and normal compounding can be carried out at 150°C, and the core material does not absorb water, and the peeling strength stability is strong.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a metal composite plate prepared based on plastic fireproof material, the metal composite plate is composed of core material, outer layer material and interlayer bonding material.

[0010] Furthermore, the core material is made of plastic particles that meet the fire protection grade A standard.

[0011] Preferably, the plastic particles consist of one or both of polyethylene and polycarbonate.

[0012] Furthermore, the outer layer material is composed of one or both of an aluminum coil and a stainless steel coil.

[0013] Furthermore, the interlayer adhesive material is composed of one or both of polyvinyl butyral film and polyurethane film.

[0014] The present invention also provides a method for preparing a metal composite plate prepared from a plastic fireproof material, the preparation method comprising the following steps:

[0015] (1) Select plastic particles that meet the fireproof Class A standard as the core material, match them with aluminum coils or other metal coils as the outer layer material, and prepare polymer films for interlayer bonding;

[0016] (2) Fire-proof Class A plastic particles are put into the extruder and stirred by a three-stage screw. The temperature of the first stage is set at 100-130°C to initially soften the plastic particles; the temperature of the second stage is increased to 140-160°C to further melt the plastic particles; the temperature of the third stage is maintained at 170-190°C to ensure that the plastic particles are completely transformed into a fluid state and uniformly mixed. Under the push of the screw, the fluid plastic particles enter the die area. According to the width requirements of the target metal composite plate, the die width is adjusted so that the extruded plastic fluid forms a plate-shaped core material with a specific thickness specification;

[0017] (3) The plate-shaped core material extruded from the die head is pressed between the upper and lower metal coils through a polymer film. Under the combined action of high temperature and high pressure, the plastic core material and the metal coil are tightly combined to form a metal composite plate with a sandwich structure;

[0018] (4) The metal composite plate after composite forming is cooled by a cooling device to stabilize the plate structure. After cooling, a protective film is affixed to the surface of the plate to prevent surface damage during transportation and storage. Finally, the plate is cut into corresponding lengths according to actual use requirements.

[0019] Furthermore, the pressing conditions in step (3) are a temperature of 150-160° C. and a pressure of 1.1-1.2 MPa.

[0020] Furthermore, the cooling method in step (4) is air cooling.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows: (1) According to the preparation method, the waste edge strips generated during the production process can be crushed and then fed into the extruder for recycling, and there is no solid waste that needs to be treated; (2) The preparation process is not affected by weather and environment, and normal production can be carried out under various conditions as long as particles are put in; (3) The core material of the prepared board has a certain flexibility and can be made into various arcs; (4) The production speed during the preparation process is relatively high, which can reach 2.8-3 meters / minute, which can significantly improve the production efficiency compared with the traditional 2 meters / minute; (5) The heating required in the production process is more energy-saving, and normal compounding can be carried out at 150°C. The core material does not absorb water and has strong peel strength stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Quality loss rate.

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein may be applied to the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only and are not intended to limit the content of this application.

[0026] The experimental methods in the following examples are conventional methods unless otherwise specified; the experimental materials and test strains used in the following examples are purchased from commercial channels unless otherwise specified.

[0027] Example 1

[0028] A metal composite panel made of plastic fireproof material

[0029] The metal composite plate is composed of core material, outer layer material and interlayer bonding material.

[0030] Wherein, the core material is plastic particles that meet the fireproof Class A standard.

[0031] Wherein, the plastic particles are composed of one or both of polyethylene and polycarbonate.

[0032] Wherein, the outer layer material is composed of one or both of aluminum coil and stainless steel coil.

[0033] Wherein, the interlayer adhesive material is composed of one or both of polyvinyl butyral film and polyurethane film.

[0034] The present invention also provides a method for preparing a metal composite plate prepared from a plastic fireproof material, the preparation method comprising the following steps:

[0035] (1) Use polyethylene plastic particles that meet the fireproof Class A standard as the core material, match them with aluminum coils as the outer layer material, and prepare polyvinyl butyral film for interlayer bonding;

[0036] (2) Fire-proof Class A plastic particles are put into the extruder and stirred by a three-stage screw. The first stage temperature is set at 100°C to initially soften the plastic particles; the second stage temperature is increased to 140°C to further melt the plastic particles; the third stage temperature is maintained at 170°C to ensure that the plastic particles are completely transformed into a fluid state and uniformly mixed. Under the push of the screw, the fluid plastic particles enter the die area. According to the width requirements of the target metal composite plate, the die width is adjusted so that the extruded plastic fluid forms a plate-shaped core material with a specific thickness specification;

[0037] (3) The plate-shaped core material extruded from the die head is pressed between the upper and lower metal coils through a polymer film. Under the conditions of 150°C and 1.1 MPa, the plastic core material and the metal coil are tightly combined to form a metal composite plate with a sandwich structure;

[0038] (4) The metal composite plate after composite forming is cooled by air cooling to stabilize the plate structure. After cooling, a protective film is affixed to the surface of the plate to prevent surface damage during transportation and storage. Finally, the plate is cut into corresponding lengths according to actual use requirements.

[0039] Example 2

[0040] A metal composite panel made of plastic fireproof material

[0041] The metal composite plate is composed of core material, outer layer material and interlayer bonding material.

[0042] Wherein, the core material is plastic particles that meet the fireproof Class A standard.

[0043] Wherein, the plastic particles are composed of one or both of polyethylene and polycarbonate.

[0044] Wherein, the outer layer material is composed of one or both of aluminum coil and stainless steel coil.

[0045] Wherein, the interlayer adhesive material is composed of one or both of polyvinyl butyral film and polyurethane film.

[0046] The present invention also provides a method for preparing a metal composite plate prepared from a plastic fireproof material, the preparation method comprising the following steps:

[0047] (1) Select polycarbonate plastic particles that meet the fireproof Class A standard as the core material, match it with stainless steel coils as the outer layer material, and prepare polyurethane film for interlayer bonding;

[0048] (2) Fire-proof Class A plastic particles are put into the extruder and stirred by a three-stage screw. The first stage temperature is set at 120°C to initially soften the plastic particles; the second stage temperature is increased to 150°C to further melt the plastic particles; the third stage temperature is maintained at 180°C to ensure that the plastic particles are completely transformed into a fluid state and uniformly mixed. Under the push of the screw, the fluid plastic particles enter the die area. According to the width requirements of the target metal composite plate, the die width is adjusted so that the extruded plastic fluid forms a plate-shaped core material with a specific thickness specification;

[0049] (3) The plate-shaped core material extruded from the die head is pressed between the upper and lower metal coils through a polymer film. Under the conditions of 160°C and 1.2MPa, the plastic core material and the metal coil are tightly combined to form a metal composite plate with a sandwich structure;

[0050] (4) The metal composite plate after composite forming is cooled by air cooling to stabilize the plate structure. After cooling, a protective film is affixed to the surface of the plate to prevent surface damage during transportation and storage. Finally, the plate is cut into corresponding lengths according to actual use requirements.

[0051] Example 3

[0052] A metal composite panel made of plastic fireproof material

[0053] The metal composite plate is composed of core material, outer layer material and interlayer bonding material.

[0054] Wherein, the core material is plastic particles that meet the fireproof Class A standard.

[0055] Wherein, the plastic particles are composed of one or both of polyethylene and polycarbonate.

[0056] Wherein, the outer layer material is composed of one or both of aluminum coil and stainless steel coil.

[0057] Wherein, the interlayer adhesive material is composed of one or both of polyvinyl butyral film and polyurethane film.

[0058] The present invention also provides a method for preparing a metal composite plate prepared from a plastic fireproof material, the preparation method comprising the following steps:

[0059] (1) Polyethylene plastic particles that meet the fireproof Class A standard are selected as the core material, stainless steel coils are used as the outer layer material, and polyvinyl butyral film is prepared for interlayer bonding;

[0060] (2) Fire-proof Class A plastic particles are put into the extruder and stirred by a three-stage screw. The first stage temperature is set at 130°C to initially soften the plastic particles; the second stage temperature is increased to 160°C to further melt the plastic particles; the third stage temperature is maintained at 190°C to ensure that the plastic particles are completely transformed into a fluid state and uniformly mixed. Under the push of the screw, the fluid plastic particles enter the die area. According to the width requirements of the target metal composite plate, the die width is adjusted so that the extruded plastic fluid forms a plate-shaped core material with a specific thickness specification;

[0061] (3) The plate-shaped core material extruded from the die head is pressed between the upper and lower metal coils through a polymer film. Under the combined action of 150°C and 1.1 MPa, the plastic core material and the metal coil are tightly combined to form a metal composite plate with a sandwich structure;

[0062] (4) The metal composite plate after composite forming is cooled by air cooling to stabilize the plate structure. After cooling, a protective film is affixed to the surface of the plate to prevent surface damage during transportation and storage. Finally, the plate is cut into corresponding lengths according to actual use requirements.

[0063] Experimental Example 1

[0064] Fire performance test

[0065] The metal composite panels prepared in Example 1, Example 2 and Example 3 were placed in a non-combustibility test furnace, and the test temperature, heating rate and other parameters were set according to the GB / T5464-2010 standard; during the test, the sample surface temperature and the temperature change in the furnace were monitored in real time by a temperature sensor, and the data was recorded by a data acquisition system. The mass loss of the sample during the test was calculated.

[0066] Result analysis: Figure 1 As shown, the mass losses of the metal composite plates prepared in Examples 1-3 are all less than 2%, among which the mass loss of Example 2 is the lowest.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0068] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A metal composite panel made of plastic fireproof material, characterized in that: The metal composite plate is composed of core material, outer layer material and interlayer bonding material.

2. A metal composite plate made of plastic fireproof material according to claim 1, characterized in that: The core material is plastic particles that meet the fireproof Class A standard.

3. A metal composite plate made of plastic fireproof material according to claim 2, characterized in that: The plastic particles consist of one or both of polyethylene and polycarbonate.

4. The metal composite plate made of plastic fireproof material according to claim 3, characterized in that: The outer layer material consists of one or both of an aluminum coil and a stainless steel coil.

5. A metal composite plate made of plastic fireproof material according to claim 4, characterized in that: The interlayer adhesive material consists of one or both of polyvinyl butyral film and polyurethane film.

6. A method for preparing a metal composite plate based on a plastic fireproof material according to claim 5, characterized in that: The preparation method comprises the following steps: (1) Select plastic particles that meet the fireproof Class A standard as the core material, match them with aluminum coils or other metal coils as the outer layer material, and prepare polymer films for interlayer bonding; (2) Fire-proof Class A plastic particles are put into the extruder and stirred by a three-stage screw. The temperature of the first stage is set at 100-130°C to initially soften the plastic particles; the temperature of the second stage is increased to 140-160°C to further melt the plastic particles; the temperature of the third stage is maintained at 170-190°C to ensure that the plastic particles are completely transformed into a fluid state and uniformly mixed. Under the push of the screw, the fluid plastic particles enter the die area. According to the width requirement of the target metal composite plate, the die width is adjusted so that the extruded plastic fluid forms a plate-shaped core material with a specific thickness specification; (3) The plate-shaped core material extruded from the die head is pressed between the upper and lower metal coils through a polymer film. Under the combined action of high temperature and high pressure, the plastic core material and the metal coil are tightly combined to form a metal composite plate with a sandwich structure; (4) The metal composite plate after composite forming is cooled by a cooling device to stabilize the plate structure. After cooling, a protective film is affixed to the surface of the plate to prevent surface damage during transportation and storage. Finally, the plate is cut into corresponding lengths according to actual use requirements.

7. A metal composite plate made of plastic fireproof material according to claim 6, characterized in that: The pressing conditions in step (3) are a temperature of 150-160° C. and a pressure of 1.1-1.2 MPa.

8. The metal composite plate made of plastic fireproof material according to claim 7, characterized in that: The cooling method in step (4) is air cooling.

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