Thermoplastic polyolefin elastomer plastic steel tile and preparation method thereof

Abstract

The present application provides a thermoplastic polyolefin elastomer plastic steel tile and a preparation method thereof. The plastic steel tile comprises a thermoplastic polyolefin elastomer plastic steel tile comprising a laminated thermoplastic polyolefin waterproofing coil, a hot melt adhesive film and a metal plate; the hot melt adhesive film at least comprises a laminated first adhesive layer, a transition adhesive layer and a second adhesive layer, the first adhesive layer comprising a first polyolefin resin and an additive; the transition adhesive layer and the second adhesive layer both comprise modified polyethylene, a first polyolefin resin, a tackifying resin and an additive; the weight percentage of the modified polyethylene in the transition adhesive layer is a%, and the weight percentage of the modified polyethylene in the second adhesive layer is b%, wherein 15≤a<b, 24≤b≤50. The present application provides a hot melt adhesive film having a three-layer structure between the thermoplastic polyolefin waterproofing coil and the metal plate, adjusts the components and proportions of the three-layer film structure, and improves the peel strength of the plastic steel tile at high temperatures.

Description

Technical Field

[0001] The present application belongs to the technical field of plastic steel tiles, and specifically relates to a thermoplastic polyolefin elastomer plastic steel tile and a preparation method thereof. Background Art

[0002] Thermoplastic polyolefin (TPO) waterproof membrane has a service life of up to 30 years. Compounding it with the metal sheet of the metal roof can effectively prevent corrosion and leakage of the metal roof.

[0003] There are two main ways to compound thermoplastic polyolefin elastomer waterproofing membrane with metal plate to make plastic steel tile: mechanical fixing and chemical bonding. Thermoplastic polyolefin elastomer waterproofing membrane fixed on metal plate by mechanical fixing cannot achieve full adhesion effect. Thermoplastic polyolefin elastomer waterproofing membrane is prone to hollowing and water leakage. Especially at high temperature, the possibility and area of ​​hollowing and water leakage of thermoplastic polyolefin elastomer waterproofing membrane will be greater, and the anti-corrosion effect on metal plate will be greatly reduced.

[0004] It is a common method in chemical bonding to combine thermoplastic polyolefin elastomer waterproofing membrane and metal plate by hot pressing to make plastic steel tile. This method is easy to operate, can save construction cost and improve construction quality. However, due to the large difference in material properties between thermoplastic polyolefin elastomer waterproofing membrane and metal plate, it is difficult to bond the two well, especially at high temperature, plastic steel tile is easy to peel off, resulting in unsatisfactory peel strength at high temperature. Summary of the invention

[0005] The present application provides a thermoplastic polyolefin elastomer plastic steel tile and a preparation method thereof, aiming to improve the peel strength of the thermoplastic polyolefin elastomer plastic steel tile at high temperature.

[0006] In a first aspect, the present application provides a thermoplastic polyolefin elastomer plastic steel tile, comprising a thermoplastic polyolefin waterproof coiled material, a hot melt adhesive film and a metal plate which are stacked;

[0007] The hot melt adhesive film at least includes a first adhesive layer, a transition adhesive layer and a second adhesive layer which are stacked, wherein the first adhesive layer includes a first polyolefin resin and an additive; the transition adhesive layer and the second adhesive layer both include modified polyethylene, a first polyolefin resin, a tackifying resin and an additive; the weight percentage of the modified polyethylene in the transition adhesive layer is a%, and the weight percentage of the modified polyethylene in the second adhesive layer is b%, wherein 15≤a<b, 24≤b≤50.

[0008] In a feasible implementation manner of the first aspect of the present application, the hot melt adhesive film satisfies at least one of the following conditions:

[0009] a. The weight percentage of the modified polyethylene in the transition rubber layer is a%, and the weight percentage of the modified polyethylene in the second rubber layer is b%, wherein b / a = 1.2 to 1.6;

[0010] b. The weight percentage of modified polyethylene in the transition rubber layer is a%, a=15-30.

[0011] In a feasible implementation manner of the first aspect of the present application, the melt index (MFR) of the first polyolefin resin is 6 g / 10 min to 11 g / 10 min (under test conditions of 230° C. / 2.16 kg).

[0012] In a feasible implementation manner of the first aspect of the present application, the first polyolefin resin includes one or more of CA10A, CA60A and NS06.

[0013] In a feasible embodiment of the first aspect of the present application, the first polyolefin resin includes a combination of CA10A and CA60A in a weight ratio of 1:(1.0-2.2).

[0014] In a feasible implementation manner of the first aspect of the present application, the grafting rate of the modified polyethylene is 1.2% to 2.3%.

[0015] In a feasible implementation of the first aspect of the present application, the grafting agent of the modified polyethylene includes one or more of maleic anhydride (MAH), 2-hydroxyethyl methacrylate (HEMA), and acrylic acid.

[0016] In a feasible implementation manner of the first aspect of the present application, the hot melt adhesive film satisfies at least one of the following conditions:

[0017] c. The second adhesive layer comprises the following components in parts by weight: 60 parts of the first polyolefin resin; 30 to 85 parts of modified polyethylene based on 60 parts of the first polyolefin resin; 20 to 50 parts of tackifying resin based on 60 parts of the first polyolefin resin; 1 to 8.5 parts of additives based on 60 parts of the first polyolefin resin;

[0018] Optionally, 30 to 50 parts of modified polyethylene based on 60 parts of the first polyolefin resin;

[0019] Optionally, 20 to 30 parts of tackifying resin based on 60 parts of the first polyolefin resin;

[0020] d. The transition rubber layer comprises the following components in parts by weight: 80 parts of the first polyolefin resin; 15 to 44 parts of the modified polyethylene based on 80 parts of the first polyolefin resin; 10 to 20 parts of the tackifying resin based on 80 parts of the first polyolefin resin; 1 to 5 parts of the additive based on 80 parts of the first polyolefin resin;

[0021] Optionally, 15 to 30 parts of modified polyethylene based on 80 parts of the first polyolefin resin;

[0022] Optionally, 10 to 15 parts of a tackifying resin based on 80 parts of the first polyolefin resin;

[0023] e. The first adhesive layer comprises the following components in parts by weight: 90 parts of a first polyolefin resin; 10 to 20 parts of a tackifying resin based on 90 parts of the first polyolefin resin; 1 to 5 parts of an additive based on 90 parts of the first polyolefin resin;

[0024] Optionally, the tackifier resin is 10 to 15 parts based on 90 parts of the first polyolefin resin.

[0025] In a feasible implementation of the first aspect of the present application, the thermoplastic polyolefin elastomer plastic steel tile satisfies at least one of the following characteristics:

[0026] f. The total thickness of the hot melt adhesive film is 0.05mm~0.06mm;

[0027] g. The thickness of the first adhesive layer, the transition adhesive layer and the second adhesive layer in the hot melt adhesive film are independently 0.015mm to 0.020mm;

[0028] h. The metal coating in the metal plate is 60g / m 2 ~150g / m 2 The metal plate can be selected from one or more of aluminum-zinc-coated steel plate, galvanized steel plate, aluminum-magnesium-manganese-coated steel plate, galvanized-magnesium-coated steel plate and aluminum-magnesium-coated steel plate.

[0029] In a feasible implementation of the first aspect of the present application, the thermoplastic polyolefin waterproof membrane comprises:

[0030] 80 parts of a second polyolefin resin, comprising a combination of CA10A and CA60A in a weight ratio of 1:(0.1-0.5);

[0031] The additive is 16 to 40 parts based on 80 parts of the second polyolefin resin.

[0032] In a feasible implementation of the first aspect of the present application, the additive includes one or more of an antioxidant material, a flame retardant material and a pigment.

[0033] In a feasible implementation of the first aspect of the present application, the antioxidant material includes an antioxidant masterbatch, and the antioxidant component in the antioxidant masterbatch accounts for 20% to 25%; optionally, the antioxidant includes one or more of a hindered phenol antioxidant and a phosphite antioxidant.

[0034] In a feasible implementation of the first aspect of the present application, the flame retardant material includes a composite flame retardant of a metal hydroxide and a phosphorus-nitrogen flame retardant masterbatch in a weight ratio of 3:1, and the flame retardant in the phosphorus-nitrogen flame retardant masterbatch accounts for 75% to 85% of the total weight of the phosphorus-nitrogen flame retardant masterbatch.

[0035] In a feasible implementation of the first aspect of the present application, the pigment includes one or more of titanium dioxide, iron yellow, chromium oxide green and ultramarine blue (the main component of which is sodium aluminum silicate).

[0036] The second aspect of the present application provides a method for preparing the thermoplastic polyolefin elastomer plastic steel tile according to the first aspect of the present application, comprising:

[0037] The thermoplastic polyolefin waterproofing coiled material is compounded with a hot melt adhesive film under a first condition to obtain a film-coated thermoplastic polyolefin waterproofing coiled material; the film-coated thermoplastic polyolefin waterproofing coiled material is compounded with a metal plate under a second condition to obtain a thermoplastic polyolefin elastomer plastic steel tile.

[0038] In a feasible implementation manner of the second aspect of the present application, in the step of compounding the thermoplastic polyolefin waterproof membrane with the hot melt adhesive film under a first condition to obtain a coated thermoplastic polyolefin waterproof membrane, the compounding temperature under the first condition is 140°C to 160°C, the compounding pressure under the first condition is 0.4MPa to 0.6MPa, and the compounding line speed under the first condition is 10m / min to 15m / min.

[0039] In a feasible implementation manner of the second aspect of the present application, in the step of compounding the coated thermoplastic polyolefin waterproof membrane and the metal plate under the second condition to obtain the thermoplastic polyolefin elastomer plastic steel tile, the compounding temperature under the second condition is 190°C to 220°C, the compounding pressure under the second condition is 0.6MPa to 0.8MPa, and the compounding line speed under the second condition is 5m / min to 10m / min.

[0040] The present application provides a hot melt adhesive film with at least three layers between the thermoplastic polyolefin waterproofing coil and the metal plate. On the one hand, the composition and proportion of the polyolefin resin, modified polyethylene and tackifying resin in the second adhesive layer close to the metal plate in the hot melt adhesive film are controlled, so that the hot melt adhesive film has good adhesion with the metal plate and good compatibility with the transition adhesive layer at high temperature. On the other hand, the content of modified polyethylene in each layer of the hot melt adhesive film is controlled to increase the polarity of the hot melt adhesive film layer by layer. For example, the content of modified polyethylene in the first adhesive layer is zero, and the weight percentage of modified polyethylene in the transition adhesive layer is less than the weight percentage of modified polyethylene in the second adhesive layer. The control method can better bond the first adhesive layer, the transition adhesive layer and the second adhesive layer, reduce the difference between the three-layer structure in the hot melt adhesive film at high temperature, improve the integrity and compatibility of the hot melt adhesive film, and improve the peel strength of the plastic steel tile at high temperature as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a structural diagram of the TPO plastic steel tile shown in Example 1;

[0042] Among them: 1. TPO waterproof membrane; 2. hot melt adhesive film; 21. the first adhesive layer in the hot melt adhesive film; 22. the transition adhesive layer in the hot melt adhesive film; 23. the second adhesive layer in the hot melt adhesive film; 3. the metal plate. DETAILED DESCRIPTION

[0043] In order to make the invention purpose, technical scheme and beneficial technical effect of the present application clearer, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the embodiments described in this specification are only for explaining the present application, not for limiting the present application.

[0044] For simplicity, only some numerical ranges are explicitly disclosed herein. However, any lower limit can be combined with any upper limit to form an unambiguous range; and any lower limit can be combined with other lower limits to form an unambiguous range, and any upper limit can be combined with any other upper limit to form an unambiguous range. In addition, although not explicitly stated, each point or single value between the range endpoints is included in the range. Thus, each point or single value can be combined with any other point or single value as its own lower limit or upper limit or with other lower limits or upper limits to form an unambiguous range.

[0045] In the description herein, when a composition is described as containing, comprising or including specific components, or when a process is described as containing, comprising or including specific process steps, it is expected that the composition of the present application also consists essentially of or consists of the components, and the process of the present application also consists essentially of or consists of the process steps.

[0046] The use of the terms "including," "comprising," "containing," and "having" should generally be interpreted as open ended and non-limiting unless expressly stated otherwise.

[0047] In the description of this article, it should be noted that, unless otherwise specified, “above” and “below” are inclusive of the number itself, and the “multiple” in “one or more” means more than two.

[0048] The above-mentioned summary of the invention of the present application is not intended to describe each disclosed embodiment or each implementation in the present application. The following description more specifically illustrates exemplary embodiments. In many places throughout the application, guidance is provided by a series of examples, which can be used in various combinations. In each example, enumeration is only used as a representative group and should not be interpreted as exhaustive.

[0049] By placing a hot melt adhesive film between the thermoplastic polyolefin elastomer waterproofing membrane and the metal plate to compound the two, the method is easy to operate, can save construction costs and improve construction quality. However, due to the large difference in properties between the thermoplastic polyolefin elastomer waterproofing membrane and the metal plate, it is difficult for common hot melt adhesive films to bond the two well. It often has better bonding performance with either the polyolefin elastomer waterproofing membrane or the metal plate. Especially at high temperatures, the gap in bonding performance between the two will widen, resulting in low peel strength of the plastic steel tile.

[0050] CN 115570864 A discloses a multifunctional film-coated board and a preparation method thereof, wherein the film-coated board comprises an anticorrosive base film, a metal plate, a hot melt adhesive film and a polymer waterproof coiled material arranged in sequence, wherein silicon micropowder is added to the polymer waterproof coiled material and the hot melt adhesive film respectively; the anticorrosive base film comprises a first base film layer and a second base film layer; the raw materials of the first base film layer comprise maleic anhydride grafted polyethylene, a tackifying resin, silicon micropowder and graphene oxide; the raw materials of the second base film layer comprise a matrix resin, silicon micropowder and graphene oxide. The film-coated board as a whole has thermal conductivity and heat dissipation properties, and can quickly diffuse the heat generated during welding of the exposed polymer waterproof coiled material, thereby avoiding poor welding caused by wrinkles that are very likely to occur during welding of polymer waterproof coiled materials such as thin TPO. However, it does not mention the peel strength at high temperatures.

[0051] In order to improve the peel strength of thermoplastic polyolefin elastomer steel tiles at high temperatures, the inventors have conducted a large number of experimental studies and demonstrations, and provided a thermoplastic polyolefin elastomer steel tile and a preparation method thereof in this application. In this application, a hot melt adhesive film having at least a three-layer structure is provided between the thermoplastic polyolefin waterproofing coil and the metal plate. On the one hand, the composition and proportion of the polyolefin resin, modified polyethylene and tackifying resin in the second adhesive layer of the hot melt adhesive film close to the metal plate are controlled, so that the hot melt adhesive film has good adhesion with the metal plate and good compatibility with the transition adhesive layer at high temperatures. On the other hand, controlling the content of modified polyethylene in each layer of the hot melt adhesive film can make the polarity of the hot melt adhesive film increase layer by layer. For example, the content of modified polyethylene in the first adhesive layer is zero, and the weight percentage of modified polyethylene in the transition adhesive layer is less than the weight percentage of modified polyethylene in the second adhesive layer. Such control methods can better bond the first adhesive layer, the transition adhesive layer and the second adhesive layer, thereby reducing the difference between the three-layer structure in the hot melt adhesive film at high temperature, improving the integrity and compatibility of the hot melt adhesive film, and improving the peel strength of the plastic steel tile at high temperature as a whole.

[0052] In the embodiment of the first aspect of the present application, the thermoplastic polyolefin elastomer plastic steel tile includes a stacked thermoplastic polyolefin waterproof coil, a hot melt adhesive film and a metal plate; the hot melt adhesive film includes at least a first adhesive layer, a transition adhesive layer and a second adhesive layer that are stacked; the first adhesive layer includes a first polyolefin resin and an additive; the transition adhesive layer and the second adhesive layer both include modified polyethylene, a first polyolefin resin, a tackifying resin and an additive; the weight percentage of the modified polyethylene in the transition adhesive layer is a%, and the weight percentage of the modified polyethylene in the second adhesive layer is b%, wherein 15≤a<b, 24≤b≤50 (for example, it can be 24, 25, 30, 35, 40, 45, 50 or any value in the range of 24 to 50).

[0053] The polarity of the metal plate is relatively strong. Increasing the content of modified polyethylene in the second adhesive layer film structure close to the metal plate in the hot melt adhesive film can increase its bonding performance with the metal plate. However, after a lot of experimental research and demonstration, the inventor found that the weight percentage of the modified polyethylene needs to be controlled to be less than or equal to 50%. Although it can enhance its bonding performance with the metal plate when it is higher than 50%, experimental research has shown that the peeling strength of plastic steel tiles with less than or equal to 50% of modified polyethylene is better when peeled at high temperature.

[0054] After analysis, the inventor believes that the reason may be that the thermoplastic polyolefin waterproofing membrane in the TPO plastic steel tile is a non-polar material, and the metal plate is a material with a strong polarity. When the plastic steel tile is at high temperature, the polarity of the modified polyethylene will increase. Although its bonding performance with the metal plate will be enhanced, the first adhesive layer structure close to the side of the TPO waterproofing membrane usually does not contain modified polyethylene. As the temperature rises, the polarization degree of the non-polar or less polar first adhesive layer changes little, while the polarity in the second adhesive layer will increase significantly, so the compatibility with other layers will deteriorate, the cohesion of the material will decrease, and it will be more likely to peel off. In addition, if the content of modified polyethylene is too high, it may increase the melting point of TPO, resulting in the need for higher processing temperatures, which will make it more susceptible to thermal degradation when processed at high temperatures.

[0055] Therefore, if the peel strength of the plastic steel tile at high temperature is to be improved as a whole, not only is it required that the hot melt adhesive film between the waterproof coiled material and the metal plate have good bonding performance with both, but it is also required that the hot melt adhesive film itself has good compatibility and stability, and has good bonding performance between its own film structures under high temperature conditions. In the present application, when the weight percentage of the modified polyethylene in the second adhesive layer structure of the hot melt adhesive film is less than 50% (including 50%), it can have good bonding performance with the metal plate, and has better compatibility with the transition adhesive layer and the first adhesive layer with the weight percentage of the modified polyethylene decreasing in sequence, and the non-polar TPO waterproof coiled material.

[0056] The inventors also found that under high temperature conditions, since the hot melt adhesive film includes a three-layer structure, the molecules between the layers are easily displaced, the cohesive force will decrease, and the hot melt adhesive film itself will easily peel off. In particular, in order to improve the compatibility of the three-layer film structure in the hot melt adhesive film in this application, the weight percentage of modified polyethylene is relatively not high. Although the compatibility between the film layers is good, it is easier to flow and the bonding performance will deteriorate. Therefore, in order to improve the bonding performance between the film layers in the hot melt adhesive film at high temperature, it is necessary to add an appropriate amount of tackifying resin to reduce the fluidity and thermal degradation at high temperature, so that the substances in the hot melt adhesive film are not easy to move, so as to improve the stability of the hot melt adhesive film, thereby improving the overall peel strength of the plastic steel tile at high temperature.

[0057] Moreover, the plastic steel tile of the present application has high high-temperature peel strength (60°C) and good aging resistance. The peel strength can reach 8N / mm after aging at 80°C for 720 hours.

[0058] In addition, by controlling the difference in weight percentage of modified polyethylene in the transition adhesive layer, the second adhesive layer and the first adhesive layer within a certain range, the compatibility and overall stability of the hot melt adhesive film can be improved, which can not only improve the peel strength of the plastic steel tile at high temperature, but also the peel strength at room temperature (23°C) and low temperature (-40°C) and high-temperature aging resistance will also be greatly improved, so that a plastic steel tile with better comprehensive performance can be obtained.

[0059] In some embodiments, the hot melt adhesive film satisfies at least one of the following conditions: a. the weight percentage of the modified polyethylene in the transition adhesive layer is a%, and the weight percentage of the modified polyethylene in the second adhesive layer is b%, wherein b / a=1.2-1.6 (for example, it can be 1.2, 1.3, 1.4, 1.5, 1.6 or any value in the range of 1.2-1.6); b. the weight percentage of the modified polyethylene in the transition adhesive layer is a%, and a=15-30 (for example, it can be 15, 16, 18, 20, 22, 24, 26, 28, 30 or any value in the range of 15-30).

[0060] Furthermore, by adjusting the specific composition and ratio of the three-layer structure in the hot melt adhesive film, a plastic steel tile with higher peel strength at high temperature and excellent aging resistance can be selected. In some embodiments, the hot melt adhesive film satisfies at least one of the following conditions:

[0061] c. The second adhesive layer comprises the following components in parts by weight: 60 parts of the first polyolefin resin; 30 to 85 parts of modified polyethylene based on 60 parts of the first polyolefin resin; 20 to 50 parts of tackifying resin based on 60 parts of the first polyolefin resin; 1 to 8.5 parts of additives based on 60 parts of the first polyolefin resin;

[0062] Optionally, 30 to 50 parts of modified polyethylene based on 60 parts of the first polyolefin resin;

[0063] Optionally, 20 to 30 parts of tackifying resin based on 60 parts of the first polyolefin resin;

[0064] d. The transition rubber layer comprises the following components in parts by weight: 80 parts of the first polyolefin resin; 15 to 44 parts of the modified polyethylene based on 80 parts of the first polyolefin resin; 10 to 20 parts of the tackifying resin based on 80 parts of the first polyolefin resin; 1 to 5 parts of the additive based on 80 parts of the first polyolefin resin;

[0065] Optionally, 15 to 30 parts of modified polyethylene based on 80 parts of the first polyolefin resin;

[0066] Optionally, 10 to 15 parts of a tackifying resin based on 80 parts of the first polyolefin resin;

[0067] e. The first adhesive layer comprises the following components in parts by weight: 90 parts of a first polyolefin resin; 10 to 20 parts of a tackifying resin based on 90 parts of the first polyolefin resin; 1 to 5 parts of an additive based on 90 parts of the first polyolefin resin;

[0068] Optionally, the tackifier resin is 10 to 15 parts based on 90 parts of the first polyolefin resin.

[0069] In the process of studying how to improve the peel strength of plastic steel tiles, the inventors found that the selection of polyolefin resins is also important. When a polyolefin resin with a melt index in the range of 6g / 10min to 11g / 10min is used in the adhesive layer of the hot melt adhesive film of the present application, when it is matched with modified polyethylene and tackifying resin, the material has better fluidity during hot pressing, which can help it to fully wet the bonded material, penetrate into the microscopic pores of the bonded material, fill the unevenness of the bonding interface, and improve the uniformity of the bonding and the bonding strength of the bonding surface in contact with it. In some embodiments, the melt index (MFR) of the first polyolefin resin is 6g / 10min to 11g / 10min (under the test conditions of 230°C / 2.16kg), for example, it can be 6, 6.5, 7.0, 7.3, 7.5, 8, 8.5, 9.0, 9.5, 9.8, 10, 10.5, 11 or any value in the range of 6 to 11.

[0070] Among them, by selecting one or more of CA10A, CA60A and NS06, the material in the hot melt adhesive film can have better fluidity and better dispersibility during the hot pressing process, and the stability of the hot melt adhesive film can be improved to improve the peel strength of the plastic steel tile at high temperature. In some embodiments, the first polyolefin resin includes one or more of CA10A, CA60A and NS06. Optionally, the first polyolefin resin includes a combination of CA10A and CA60A in a weight ratio of 1: (1.0 to 2.2), for example, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2 or any value in the range of 1.0 to 2.2.

[0071] The modified polyethylene of the present application can be obtained by introducing polar groups or functional side chains into the molecular chain of polyethylene. In some embodiments, the grafting rate of the modified polyethylene is 1.2% to 2.3% (for example, it can be 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.3 or any value in the range of 1.2 to 2.3). When the grafting rate of the modified polyethylene is controlled within the above range, the hot melt adhesive film can have better bonding performance and compatibility. In some embodiments, the grafting agent of the modified polyethylene can include one or more of maleic anhydride (MAH), 2-hydroxyethyl methacrylate (HEMA), and acrylic acid.

[0072] The selection of appropriate hot melt adhesive film, metal plate and thermoplastic polyolefin waterproofing membrane can also improve the overall peel strength of the plastic steel tile. In some embodiments, the thermoplastic polyolefin elastomer plastic steel tile meets at least one of the following conditions: f. The total thickness of the hot melt adhesive film is 0.05mm to 0.06mm; g. The thickness of the first adhesive layer, the transition adhesive layer and the second adhesive layer in the hot melt adhesive film are independently 0.015mm to 0.020mm; h. The metal of the coating in the metal plate is 60g / m 2 ~150g / m 2 The metal plate can be selected from one or more of aluminum-zinc coated steel plate, galvanized steel plate, aluminum-magnesium-manganese coated steel plate, galvanized-magnesium coated steel plate, and aluminum-magnesium coated steel plate.

[0073] In some embodiments, the thermoplastic polyolefin waterproof membrane includes: 80 parts of a second polyolefin resin, including a combination of CA10A and CA60A in a weight ratio of 1:(0.1 to 0.5) (for example, it can be 0.1, 0.2, 0.3, 0.4, 0.5 or any value in the range of 0.1 to 0.5); 16 to 40 parts of additives based on 80 parts of the second polyolefin resin.

[0074] At the same time, suitable tackifying resins and additives can be selected according to the needs to obtain different plastic steel tiles. In some embodiments, the tackifying resin can be one or more of petroleum resin, C5 resin, C9 resin, and terpene resin. In some embodiments, the additives can include one or more of antioxidant materials, flame retardant materials, and pigments.

[0075] The antioxidant material may include an antioxidant masterbatch, in which the antioxidant content is 20% to 25%; optionally, the antioxidant includes one or more of a hindered phenol antioxidant and a phosphite antioxidant. The flame retardant material may include a composite flame retardant of a metal hydroxide and a phosphorus nitrogen flame retardant masterbatch in a weight ratio of 3:1, in which the flame retardant accounts for 75% to 85% of the total weight of the phosphorus nitrogen flame retardant masterbatch. The pigment may include one or more of titanium dioxide, iron yellow, chromium oxide green and ultramarine blue (the main component is sodium aluminum silicate). The pigment may also include a material formed by a composite of titanium dioxide and resin, such as a white masterbatch.

[0076] The second aspect of the present application provides a method for preparing the thermoplastic polyolefin elastomer plastic steel tile according to the first aspect of the present application, comprising:

[0077] The thermoplastic polyolefin waterproofing coiled material is compounded with a hot melt adhesive film under a first condition to obtain a film-coated thermoplastic polyolefin waterproofing coiled material; the film-coated thermoplastic polyolefin waterproofing coiled material is compounded with a metal plate under a second condition to obtain a thermoplastic polyolefin elastomer plastic steel tile.

[0078] In the step of compounding the thermoplastic polyolefin waterproofing membrane with the hot melt adhesive film under the first condition to obtain the coated thermoplastic polyolefin waterproofing membrane, controlling some parameters within a certain range can obtain a plastic steel tile with better performance. Optionally, in some embodiments, in the step of compounding the thermoplastic polyolefin waterproofing membrane with the hot melt adhesive film under the first condition to obtain the coated thermoplastic polyolefin waterproofing membrane, the compounding temperature under the first condition is 140°C to 160°C, the compounding pressure under the first condition is 0.4MPa to 0.6MPa, and the compounding line speed under the first condition is 10m / min to 15m / min.

[0079] Alternatively, in the step of compounding the coated thermoplastic polyolefin waterproofing coiled material with the metal plate under the second condition to obtain the thermoplastic polyolefin elastomer plastic steel tile, some parameters may be controlled within a certain range to obtain a plastic steel tile with better performance. Optionally, in some embodiments, in the step of compounding the coated thermoplastic polyolefin waterproofing coiled material with the metal plate under the second condition to obtain the thermoplastic polyolefin elastomer plastic steel tile, the compounding temperature under the second condition is 190°C to 220°C, the compounding pressure under the second condition is 0.6MPa to 0.8MPa, and the compounding line speed under the second condition is 5m / min to 10m / min.

[0080] Example

[0081] The following examples more specifically describe the disclosure of the present application, which are intended for illustrative purposes only, as it will be apparent to those skilled in the art that various modifications and variations are possible within the scope of the disclosure of the present application. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are by weight, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further processing, and the instruments used in the examples are commercially available.

[0082] Raw materials for TPO waterproof membrane: (1) Thermoplastic polyolefin resin: CA10A and CA60A purchased from LyondellBasell Industries, and NS06 purchased from China Petroleum & Chemical Corporation; (2) Composite flame retardant: 5250M purchased from Guangdong Shunde Tongcheng New Materials Co., Ltd., and magnesium hydroxide purchased from Dandong Tianci Flame Retardant Materials Technology Co., Ltd.; (3) Composite antioxidant masterbatch: composite antioxidant masterbatch from Foshan Bikun Plastic Co., Ltd.; (4) White masterbatch: HT84997 purchased from Heshan Hancai Masterbatch Co., Ltd.

[0083] Raw materials for hot melt adhesive film: (1) Thermoplastic polyolefin resin: CA10A and CA60A purchased from LyondellBasell Industries; (2) Polyethylene: 7042 purchased from Sinopec Yangzi Petrochemical Co., Ltd.; (3) Tackifying resin: 41E755 purchased from The Dow Chemical Company; (4) Grafting agent: maleic anhydride A010576 purchased from Anhui Zesheng Technology Co., Ltd., 2-hydroxyethyl methacrylate MS4248 purchased from Jinan Mingsheng Chemical Co., Ltd.; (5) Initiator: benzoyl peroxide purchased from Lierming Trading Co., Ltd.

[0084] The metal plate uses an aluminum-zinc-coated steel plate with no surface treatment, which is an aluminum-zinc-coated steel plate with U treatment process (oil-free, non-passivation, and non-fingerprint resistance) purchased from Baoshan Iron and Steel Co., Ltd.

[0085] Example 1

[0086] A thermoplastic polyolefin elastomer plastic steel tile comprises a stacked TPO waterproof coiled material, a hot melt adhesive film and a metal plate, and a preparation method thereof comprises:

[0087] (1) Preparation of TPO waterproof membrane: 70 parts by weight of CA10A and 10 parts of CA60A thermoplastic polyolefin resin, 20 parts of composite flame retardant (magnesium hydroxide: phosphorus nitrogen flame retardant masterbatch = 3:1), 3 parts of composite antioxidant masterbatch and 3 parts of white masterbatch were mixed evenly, melt-extruded through a single-screw extruder, shaped by three rollers, cooled and rolled to form a TPO waterproof membrane.

[0088] (2) Preparation of hot melt adhesive film: providing the raw materials of the first adhesive layer: 30 parts of thermoplastic polyolefin resin CA10A, 60 parts of CA60A, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the transition adhesive layer: 25 parts of thermoplastic polyolefin resin CA10A, 55 parts of CA60A, 15 parts of maleic anhydride modified polyethylene, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the second adhesive layer: 20 parts of thermoplastic polyolefin resin CA10A, 40 parts of CA60A, 30 parts of maleic anhydride modified polyethylene, 20 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch;

[0089] The evenly mixed raw materials for the first adhesive layer, the transition adhesive layer and the second adhesive layer are respectively added into the hopper of the three-layer co-extrusion film blowing machine, and the raw materials are melted by the screw heating at 200°C. Then, the molten raw materials of the first adhesive layer, the molten raw materials of the transition adhesive layer and the molten raw materials of the second adhesive layer are converged at the die head, co-extruded composite film blowing, and cooled to form a three-layer superimposed hot melt adhesive film.

[0090] The grafting rate of maleic anhydride modified polyethylene is 1.2% to 2.3%. The weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer is 13.9%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 26.5%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 1.91 times the weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer. The difference between the weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer and the weight percentage of maleic anhydride modified polyethylene in the first adhesive layer is 13.9%.

[0091] The melt index (MFR) of the thermoplastic polyolefin resin is 7 to 10 g / 10 min (under the conditions of 230° C. / 2.16 kg), and the weight ratio of CA10A to CA60A used in the thermoplastic polyolefin resin is 1: (2 to 2.2).

[0092] To prepare the modified polyethylene, 100 parts of polyethylene, 6 parts of a modifier (grafting agent, maleic anhydride A010576), 1.5 parts of styrene, and 0.2 parts of an initiator (benzoyl peroxide) are uniformly mixed and added to a twin-screw extruder, and the modified polyethylene can be obtained by melt extrusion under certain conditions.

[0093] (3) Preparation of TPO plastic steel tiles: The TPO waterproofing membrane and the hot melt adhesive film are laminated with a pressure roller at a temperature of 150°C, a pressure of 0.5 MPa, and a line speed of 12 m / min; the TPO waterproofing membrane laminated with the hot melt adhesive film is laminated with the pre-heated galvanized steel sheet with a pressure roller at a temperature of 200°C, a pressure of 0.7 MPa, and a line speed of 8 m / min. Finally, the TPO plastic steel tiles are obtained after being shaped with a pressure roller, cooled, and rolled up.

[0094] Example 2

[0095] (1) Preparation of TPO waterproof membrane: Same as Example 1.

[0096] (2) Preparation of hot melt adhesive film: providing the raw materials of the first adhesive layer: 45 parts of thermoplastic polyolefin resin CA10A, 45 parts of CA60A, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the transition adhesive layer: 40 parts of thermoplastic polyolefin resin CA10A, 40 parts of CA60A, 15 parts of maleic anhydride modified polyethylene, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the second adhesive layer: 30 parts of thermoplastic polyolefin resin CA10A, 30 parts of CA60A, 30 parts of maleic anhydride modified polyethylene, 20 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch;

[0097] The raw material of the first adhesive layer, the raw material of the transition adhesive layer and the raw material of the second adhesive layer are respectively added into the three extruders of the co-extrusion film blowing machine, and the raw materials are heated to melt at 200°C. Then, the molten raw material of the first adhesive layer, the molten raw material of the transition adhesive layer and the molten raw material of the second adhesive layer are successively converged at the die head, co-extruded composite film blowing, and cooled to form a three-layer superimposed hot melt adhesive film.

[0098] Compared with Example 1, the difference is that the weight ratio of CA10A and CA60A used in the thermoplastic polyolefin resin in the hot melt adhesive film is 1:1.

[0099] (3) Preparation of TPO plastic steel tiles: Same as Example 1.

[0100] Example 3

[0101] (1) Preparation of TPO waterproof membrane: Same as Example 1.

[0102] (2) Preparation of hot melt adhesive film: providing the raw materials of the first adhesive layer: 30 parts of thermoplastic polyolefin resin CA10A, 60 parts of CA60A, 15 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the transition adhesive layer: 25 parts of thermoplastic polyolefin resin CA10A, 55 parts of CA60A, 15 parts of maleic anhydride modified polyethylene, 15 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the second adhesive layer: 20 parts of thermoplastic polyolefin resin CA10A, 40 parts of CA60A, 30 parts of maleic anhydride modified polyethylene, 30 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch;

[0103] The raw material of the first adhesive layer, the raw material of the transition adhesive layer and the raw material of the second adhesive layer are respectively added into the three extruders of the co-extrusion film blowing machine, and the raw materials are heated to melt at 200°C. Then, the molten raw material of the first adhesive layer, the molten raw material of the transition adhesive layer and the molten raw material of the second adhesive layer are successively converged at the die head, co-extruded composite film blowing, and cooled to form a three-layer superimposed hot melt adhesive film.

[0104] Compared with Example 1, the difference is that the proportion of the tackifying resin in the hot melt adhesive film is increased.

[0105] (3) Preparation of TPO plastic steel tiles: Same as Example 1.

[0106] Example 4

[0107] (1) Preparation of TPO waterproof membrane: Same as Example 1.

[0108] (2) Preparation of hot melt adhesive film: providing the raw materials of the first adhesive layer: 30 parts of thermoplastic polyolefin resin CA10A, 60 parts of CA60A, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the transition adhesive layer: 25 parts of thermoplastic polyolefin resin CA10A, 55 parts of CA60A, 30 parts of maleic anhydride modified polyethylene, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the second adhesive layer: 20 parts of thermoplastic polyolefin resin CA10A, 40 parts of CA60A, 50 parts of maleic anhydride modified polyethylene, 20 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch;

[0109] The raw material of the first adhesive layer, the raw material of the transition adhesive layer and the raw material of the second adhesive layer are respectively added into the three extruders of the co-extrusion film blowing machine, and the raw materials are heated to melt at 200°C. Then, the molten raw material of the first adhesive layer, the molten raw material of the transition adhesive layer and the molten raw material of the second adhesive layer are successively converged at the die head, co-extruded composite film blowing, and cooled to form a three-layer superimposed hot melt adhesive film.

[0110] Compared with Example 1, the difference is that the weight percentage of modified polyethylene in the transition adhesive layer and the second adhesive layer of the hot melt adhesive film is increased. Among them, the weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer in Example 4 is 24.4%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 37.5%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 1.54 times the weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer. The difference between the weight percentage of maleic anhydride modified polyethylene in the transition adhesive layer and the weight percentage of maleic anhydride modified polyethylene in the first adhesive layer is 24.4%.

[0111] (3) Preparation of TPO plastic steel tiles: Same as Example 1.

[0112] Example 5

[0113] (1) Preparation of TPO waterproof membrane: Same as Example 1.

[0114] (2) Preparation of hot melt adhesive film: providing the raw materials of the first adhesive layer: 30 parts of thermoplastic polyolefin resin CA10A, 60 parts of CA60A, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the transition adhesive layer: 25 parts of thermoplastic polyolefin resin CA10A, 55 parts of CA60A, 15 parts of polyethylene modified by 2-hydroxyethyl methacrylate, 10 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch; the raw materials of the second adhesive layer: 20 parts of thermoplastic polyolefin resin CA10A, 40 parts of CA60A, 30 parts of polyethylene modified by 2-hydroxyethyl methacrylate, 20 parts of tackifying resin, and 3 parts of composite antioxidant masterbatch;

[0115] The raw material of the first adhesive layer, the raw material of the transition adhesive layer and the raw material of the second adhesive layer are respectively added into the three extruders of the co-extrusion film blowing machine, and the raw materials are heated to melt at 200°C. Then, the molten raw material of the first adhesive layer, the molten raw material of the transition adhesive layer and the molten raw material of the second adhesive layer are successively converged at the die head, co-extruded composite film blowing, and cooled to form a three-layer superimposed hot melt adhesive film.

[0116] Compared with Example 1, the difference is that 2-hydroxyethyl methacrylate is used to modify polyethylene, and the grafting rate is 1.2% to 2.3%.

[0117] (3) Preparation of TPO plastic steel tiles: Same as Example 1.

[0118] Example 6

[0119] (1) Preparation of TPO waterproof membrane: 40 parts by weight of CA10A, 40 parts by weight of NS06 thermoplastic polyolefin resin, and 20 parts by weight of composite flame retardant (magnesium hydroxide: phosphorus nitrogen flame retardant masterbatch)

[0120] =3:1), 3 parts of composite antioxidant masterbatch and 3 parts of white masterbatch are mixed evenly, melt-extruded by a single-screw extruder, shaped by three rollers, cooled, and wound.

[0121] Compared with Example 1, the difference is that the composition of the thermoplastic polyolefin resin is different.

[0122] (2) Preparation of hot melt adhesive film: Same as Example 1.

[0123] (3) Preparation of TPO plastic steel tiles: Same as Example 1.

[0124] Embodiment 7-8

[0125] Embodiment 7, compared with embodiment 4, is different in that the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer in embodiment 4 is 31.25%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 37.5%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 1.2 times the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer. The difference between the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer and the weight percentage of maleic anhydride modified polyethylene in the first adhesive layer is 31.25%.

[0126] Example 8, compared with Example 1, is different in that the polyolefin resin used in the hot melt adhesive film is POE, and the melt index (MFR) of POE is about 1.4 g / 10 min under the test conditions of 230°C / 2.16 kg.

[0127] Comparative Examples 1-3

[0128] Comparative Example 1 is different from Example 1 in that the second adhesive layer structure in the hot melt adhesive film used includes 90 parts by weight of modified polyethylene.

[0129] The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 52.0%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 3.7 times the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer. The difference between the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer and the weight percentage of maleic anhydride modified polyethylene in the first adhesive layer is 13.9%.

[0130] Comparative Example 2 is different from Example 1 in that the second adhesive layer structure in the hot melt adhesive film used includes 25 parts by weight of modified polyethylene.

[0131] The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 23.1%. The weight percentage of maleic anhydride modified polyethylene in the second adhesive layer is 1.9 times the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer. The difference between the weight percentage of maleic anhydride modified polyethylene in the transition rubber layer and the weight percentage of maleic anhydride modified polyethylene in the first adhesive layer is 13.9%.

[0132] Comparative Example 3 is different from Example 1 in that the hot melt adhesive film used does not contain a tackifying resin.

[0133] Test Method

[0134] Sample size: plastic steel tile size 50mm*200mm

[0135] Heat aging treatment: Place the sample in an oven and perform heat aging at 80°C for 720 hours.

[0136] Peel strength test: Tested according to GB2792-2014 "Test method for peel strength of adhesive tape".

[0137] Table 1 Performance tests of various embodiments and comparative examples

[0138]

[0139] From the analysis of Table 1, it can be seen that the peel strength of the plastic steel tiles of Examples 1 to 8 of the present application at a high temperature of 60°C is higher than that of Comparative Examples 1 to 3. It can be seen that the design of the hot melt adhesive film of the present application can improve the peel strength of the plastic steel tiles at high temperatures.

[0140] Further analysis of Table 1 shows that, from the comparison of the plastic steel tiles of Examples 1 to 8 of the present application and Comparative Examples 1 to 3, it can be seen that the design of the three-layer film structure in the hot-melt adhesive film of the present application, when the composition and proportion of the first polyolefin resin, the modified polyethylene and the tackifying resin in the second adhesive layer are all within a suitable range, the peel strength of the plastic steel tiles at a high temperature of 60°C can be significantly improved.

[0141] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thermoplastic polyolefin elastomer plastic steel tile, characterized in that: The thermoplastic polyolefin elastomer plastic steel tile comprises a thermoplastic polyolefin waterproof coiled material, a hot melt adhesive film and a metal plate which are stacked; The hot melt adhesive film at least comprises a first adhesive layer, a transition adhesive layer and a second adhesive layer which are stacked; the first adhesive layer comprises a first polyolefin resin and an additive; the transition adhesive layer and the second adhesive layer both comprise modified polyethylene, a first polyolefin resin, a tackifying resin and an additive; The weight percentage of the modified polyethylene in the transition rubber layer is a%, and the weight percentage of the modified polyethylene in the second rubber layer is b%, wherein 15≤a<b, 24≤b≤50; The first adhesive layer comprises the following components in parts by weight: 90 parts of a first polyolefin resin; 10 to 20 parts of a tackifying resin based on 90 parts of the first polyolefin resin; 1 to 5 parts of an additive based on 90 parts of the first polyolefin resin; the first adhesive layer does not contain modified polyethylene.

2. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The hot melt adhesive film meets at least one of the following characteristics: a. The weight percentage of the modified polyethylene in the transition rubber layer is a%, and the weight percentage of the modified polyethylene in the second rubber layer is b%, wherein b / a=1.2~1.6; b. The weight percentage of the modified polyethylene in the transition rubber layer is a%, where a=15~30.

3. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The melt index of the first polyolefin resin is 6 g / 10 min-11 g / 10 min, and the test conditions are 230° C. and a load of 2.16 kg.

4. The thermoplastic polyolefin elastomer plastic steel tile according to claim 3, characterized in that: The first polyolefin resin includes a combination of CA10A and CA60A in a weight ratio of 1:(1.0-2.2).

5. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The grafting rate of the modified polyethylene is 1.2% to 2.3%.

6. The thermoplastic polyolefin elastomer plastic steel tile according to claim 4, characterized in that: The grafting agent of the modified polyethylene includes one or more of maleic anhydride, 2-hydroxyethyl methacrylate and acrylic acid.

7. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The hot melt adhesive film meets at least one of the following characteristics: c. The second adhesive layer comprises the following components in parts by weight: 60 parts of the first polyolefin resin; 30 to 85 parts of modified polyethylene based on 60 parts of the first polyolefin resin; 20 to 50 parts of tackifying resin based on 60 parts of the first polyolefin resin; 1 to 8.5 parts of additives based on 60 parts of the first polyolefin resin; d. The transition rubber layer comprises the following components in parts by weight: 80 parts of a first polyolefin resin; 15 to 44 parts of a modified polyethylene based on 80 parts of the first polyolefin resin; 10 to 20 parts of a tackifying resin based on 80 parts of the first polyolefin resin; The additive is 1 to 5 parts based on 80 parts of the first polyolefin resin.

8. The thermoplastic polyolefin elastomer plastic steel tile according to claim 7, characterized in that: The second adhesive layer comprises: 30 to 50 parts of modified polyethylene and 20 to 30 parts of tackifying resin, based on 60 parts of the first polyolefin resin.

9. The thermoplastic polyolefin elastomer plastic steel tile according to claim 7, characterized in that: The transition rubber layer comprises: 15 to 30 parts of modified polyethylene and 10 to 15 parts of tackifying resin, based on 80 parts of the first polyolefin resin.

10. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The first adhesive layer includes 10 to 15 parts of a tackifying resin based on 90 parts of the first polyolefin resin.

11. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The thermoplastic polyolefin elastomer plastic steel tile meets at least one of the following characteristics: f. The total thickness of the hot melt adhesive film is 0.05 mm ~ 0.06 mm; g. The thickness of the first adhesive layer, the transition adhesive layer and the second adhesive layer in the hot melt adhesive film are independently 0.015 mm ~ 0.020 mm; h. The metal coating in the metal plate is 60 g / m 2 ~150 g / m 2 The metal plate can be selected from one or more of aluminum-zinc-coated steel plate, galvanized steel plate, aluminum-magnesium-manganese-coated steel plate, galvanized-magnesium-coated steel plate and aluminum-magnesium-coated steel plate.

12. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The thermoplastic polyolefin waterproof membrane comprises: 80 parts of a second polyolefin resin, comprising a combination of CA10A and CA60A in a weight ratio of 1:(0.1-0.5); 16 to 40 parts of the additive, based on 80 parts of the second polyolefin resin.

13. The thermoplastic polyolefin elastomer plastic steel tile according to claim 1, characterized in that: The additives include one or more of antioxidant materials, flame retardant materials and pigments.

14. The method for preparing the thermoplastic polyolefin elastomer plastic steel tile according to any one of claims 1 to 13, characterized in that: include: Compounding the thermoplastic polyolefin waterproofing membrane with the hot melt adhesive film under the first condition to obtain a coated thermoplastic polyolefin waterproofing membrane; The film-coated thermoplastic polyolefin waterproof coiled material is compounded with the metal plate under a second condition to obtain the thermoplastic polyolefin elastomer plastic steel tile.

15. The method for preparing the thermoplastic polyolefin elastomer plastic steel tile according to claim 14, characterized in that: In the step of compounding the thermoplastic polyolefin waterproofing membrane with the hot melt adhesive film under the first condition to obtain the coated thermoplastic polyolefin waterproofing membrane, the compounding temperature under the first condition is 140° C. to 160° C., the compounding pressure under the first condition is 0.4 MPa to 0.6 MPa, and the compounding line speed under the first condition is 10 m / min to 15 m / min; and / or, In the step of compounding the coated thermoplastic polyolefin waterproof coiled material with the metal plate under the second condition to obtain the thermoplastic polyolefin elastomer plastic steel tile, the compounding temperature under the second condition is 190°C~220°C, the compounding pressure under the second condition is 0.6 MPa~0.8MPa, and the compounding line speed under the second condition is 5 m / min~10m / min.

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