Shape memory fireproof curtain door and preparation method thereof

Abstract

The application provides a shape memory fireproof roller shutter door and a preparation method thereof. The shape memory fireproof roller shutter door comprises a curtain body, a connecting rod and a door frame. The curtain body is a multilayer structure and comprises a first fireproof layer, a first fireproof layer, a second fireproof layer and a second fireproof layer which are sequentially compounded from top to bottom. The first fireproof layer and the second fireproof layer both have shape memory function. The connecting rod is connected with one end of the curtain body and is used for mounting and fixing the curtain body on the door frame. In the application, the curtain body is provided as a multilayer structure. The fireproof layer on the outer surface of the curtain body and the fireproof layer between the fireproof layers both have certain fireproof and ablation resistant performance. Each layer structure can intercept fire, thereby ensuring good fireproof effect of the fireproof roller shutter door. In addition, the fireproof layer has shape memory function. When fire occurs, the fireproof roller shutter door can be automatically sensed and closed under the driving action of a heat signal without circuit control, thereby ensuring good safety performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fireproof door manufacturing, in particular to a shape memory fireproof roller shutter door and a preparation method thereof. BACKGROUND

[0002] Among various disasters, fire is one of the main disasters that most frequently and generally threaten public safety and social development. Fireproof doors are indispensable fireproof and smokeproof facilities in modern buildings, which can not only play a role in fire prevention and fire isolation, but also effectively prevent fire spreading and smoke diffusion, and protect life and property safety.

[0003] At present, in order to ensure the convenience of personnel passing in the actual application process, the existing fireproof doors generally need a linkage controller to make the fireproof door in an open state; in the event of a fire, in order to prevent the spread of fire from leading to more serious disaster, the power supply generally needs to be cut off, however, under the condition of power failure, the linkage controller driving the fireproof door will be invalid, so that the fireproof door cannot be closed in time, and thus the fireproof and smokeproof effect cannot be achieved, which seriously affects personal safety.

[0004] Therefore, based on the above problems, it is necessary to study a shape memory fireproof roller shutter door with good safety performance and a preparation method thereof. SUMMARY

[0005] The embodiment of the present application provides a shape memory fireproof roller shutter door and a preparation method thereof. Under a heat driving signal, the fireproof roller shutter door can be automatically inducted and driven to realize automatic closing of the fireproof roller shutter door to isolate fire, without power control, and has good safety.

[0006] In a first aspect, the present application provides a shape memory fireproof roller shutter door, comprising:

[0007] The curtain body is a multi-layer structure, comprising a first fireproof layer, a first fireproof layer, a second fireproof layer and a second fireproof layer which are sequentially compounded from top to bottom, and the first fireproof layer and the second fireproof layer both have shape memory function;

[0008] The connecting rod is connected with one end of the curtain body, and is used for mounting and fixing the curtain body on the door frame.

[0009] Preferably, the curtain body further comprises a response layer, and the response layer is located between the first fireproof layer and the second fireproof layer.

[0010] Preferably, the thickness of the response layer is 1-2mm.

[0011] Preferably, the response layer is a continuous fiber reinforced shape memory polymer material.

[0012] Preferably, the continuous fibers are carbon fibers, and the shape memory polymer material is at least one of shape memory epoxy resin, shape memory styrene resin, shape memory polycaprolactone, or shape memory polylactic acid.

[0013] Preferably, the first fireproof layer and the second fireproof layer are both shape memory polymer foam composites.

[0014] More preferably, the cell diameter of the shape memory polymer foam composite is 120-150 μm.

[0015] Preferably, the first fireproof layer and the second fireproof layer are both shape memory polymer foam composites.

[0016] More preferably, the flexible refractory fibers are at least one of polycrystalline mullite fibers, alumina fibers, or silicon carbide fibers.

[0017] Preferably, the thickness of the first fireproof layer and the second fireproof layer is both 0.5-1 cm, and the thickness of the first refractory layer and the second refractory layer is both 0.5-1 cm.

[0018] In a second aspect, the present application provides a preparation method of the shape memory fireproof roller shutter door according to any one of the first aspect.

[0019] (1) providing a refractory layer and a fireproof layer; wherein the refractory layer comprises a first refractory layer and a second refractory layer, and the fireproof layer comprises a first fireproof layer and a second fireproof layer;

[0020] (2) sequentially compounding the first refractory layer, the first fireproof layer, the second fireproof layer, and the second refractory layer to obtain a curtain body;

[0021] (3) compounding one end of the curtain body to a connecting rod to obtain the shape memory fireproof roller shutter door.

[0022] Preferably, the preparation method of the fireproof layer is as follows:

[0023] (11) mixing the ablation-resistant shape memory polymer material and the flame retardant particles to obtain a mixed system;

[0024] (12) adding a foaming agent to the mixed system, and stirring and foaming to obtain the fireproof layer.

[0025] Preferably, the foaming temperature is 75-85 °C, and the foaming time is 30-35 min.

[0026] Preferably, the ablation-resistant shape memory polymer material is at least one of shape memory phenolic resin, shape memory phthalonitrile resin, or shape memory benzoxazine resin.

[0027] The flame retardant particles are at least one of decabromodiphenyl ether, tetrabromobisphenol A, bis(2,3-dialkylpropyl) ether, octabromodiphenyl ether, magnesium hydroxide, aluminum hydroxide, silicon dioxide, tannin oxide, or silicon carbide.

[0028] The foaming agent is at least one of n-butane, n-pentane, isopentane, cyclopentane, n-hexane, or n-heptane.

[0029] More preferably, the components in the fireproof layer are as follows, by weight percentage: 75-90% heat-resistant shape memory polymer material, 5-15% flame retardant particles, and 5-10% foaming agent.

[0030] Preferably, the composite method is to use shape memory adhesive for bonding;

[0031] The shape memory adhesive is a two-component adhesive, preferably a shape memory epoxy resin and a shape memory phenolic resin.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] In this invention, the curtain of the fireproof roller shutter door is designed with a multi-layer structure. The fire-resistant layer on the outer surface of the curtain and the fireproof layer between the fire-resistant layers both have certain fire resistance and ablation resistance properties. Each layer can intercept fire, forming a multi-layer interception mechanism to ensure the fireproof effect of the fireproof roller shutter door. Furthermore, the fireproof layer has a shape memory function. When a fire occurs, the fireproof roller shutter door can automatically sense and close under the drive of a heat signal, without the need for circuit control, thus ensuring good safety performance. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the curtain structure of a shape memory fireproof roller shutter door provided by the present invention;

[0036] Figure 2 This is a schematic diagram of the temporary shape structure of a shape memory fireproof roller shutter door provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the initial shape structure of a shape memory fireproof roller shutter door provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the curtain structure of another shape memory fireproof roller shutter door provided by the present invention;

[0039] In the diagram, 100 is the curtain; 200 is the connecting rod; 101 is the first fire-resistant layer; 102 is the first fireproof layer; 103 is the second fireproof layer; 104 is the second fire-resistant layer; and 105 is the responsive layer. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] Currently, to automate fire-resistant rolling shutters, common fire-resistant rolling shutters require smoke detectors, temperature alarms, and linkage controllers to operate when strong or weak current is available. However, when a fire occurs, the first thing people do is cut off the power to prevent the fire from spreading through electrical equipment. At this time, the fire-resistant rolling shutter is in a state of no power and cannot be driven by the electrical gate to control the rolling shutter. Sometimes, there may be unexpected situations such as power outages or power failures. If a fire occurs in the building at this time, the fire-resistant rolling shutter will not be able to close automatically, which will also cause property damage and casualties.

[0042] Furthermore, referring to existing technologies such as Chinese invention patents CN201720520383.4 - A Double-Track Inorganic Fabric Fireproof Roller Shutter Door and CN201821969395.6 - A Fireproof Roller Shutter Curtain Structure, it can be found that currently common fire doors generally use metal plates to connect the various structural layers into one piece. The plates are set on both sides of the roller shutter and protrude from the roller shutter. When the roller shutter is rolled up, the plates occupy a certain space, resulting in a large volume of the rolled-up roller shutter. Moreover, the excessive weight of inorganic material fire doors also poses certain safety hazards.

[0043] To solve one or more of the above problems, such as Figures 1 to 3 As shown, the present invention provides a shape memory fireproof roller shutter door, comprising:

[0044] The curtain 100 has a multi-layer structure, including a first fire-resistant layer 101, a first fireproof layer 102, a second fireproof layer 103 and a second fire-resistant layer 104, which are sequentially composited from top to bottom. The first fireproof layer 102 and the second fireproof layer 103 both have shape memory function.

[0045] A connecting rod 200 is connected to one end of the curtain 100 and is used to install and fix the curtain 100 on the door frame.

[0046] In this invention, such as Figure 1 As shown, by setting the curtain of the fire-resistant roller shutter door to a multi-layer structure, the fire-resistant layer on the outer surface of the curtain and the fireproof layer between the fire-resistant layers each possess certain ablation resistance and fireproof performance. This constructs a multi-layered interception mechanism, enabling each layer of the fire-resistant roller shutter door to achieve multiple interceptions of fire, thus ensuring a good fireproof effect. Furthermore, the fireproof layer in this invention also has a shape memory function; when not in use, the curtain of the fire-resistant roller shutter door can be rolled up into a shape similar to... Figure 2 The temporary structure (curled state) within the curtain allows the fire-resistant roller shutter to automatically unfold and return to its original shape when a fire occurs and the temperature reaches the shape memory transition temperature of the fire-resistant layer. Driven by a heat signal, the fire-resistant layer expands and returns to its original shape, forming a shape similar to... Figure 3 The initial structure (flat state) is used to isolate fire. The fireproof roller shutter door of this invention has a shape memory function, requiring no circuit control. It can automatically sense and unfold under the drive of a heat signal, thus ensuring good safety performance.

[0047] According to some preferred embodiments, such as Figure 4 As shown, the curtain 100 further includes a responsive layer 105, which is located between the first fireproof layer 102 and the second fireproof layer 103; the thickness of the responsive layer 105 is 1 to 2 mm (for example, it can be 1 mm, 1.2 mm, 1.5 mm, 1.8 mm or 2 mm).

[0048] In this invention, to further improve the heat recovery performance of fire-resistant roller shutters, that is, to ensure that the fire-resistant roller shutters unfold immediately upon the arrival of a fire to achieve the purpose of isolating the fire, such as... Figure 4As shown, the present invention can also provide a response layer between the first fireproof layer and the second fireproof layer. The response layer can respond quickly to thermal stimulation signals and has good recovery driving force. When the fireproof roller shutter door is in use, if one side of the door encounters a fire, the fire will first transfer heat to the first fire-resistant layer located on the outermost layer of the fireproof roller shutter door. After the first fire-resistant layer heats up, it transfers heat to the first fireproof layer located inside the first fire-resistant layer. The temperature of the first fireproof layer will rise. Since there is a temperature difference between the first fireproof layer and the second fireproof layer on both sides of the response layer, the first fireproof layer will transfer heat to the second fireproof layer through the response layer. When the shape transition temperature of the response layer is reached, the response layer responds quickly and begins to deform and unfold, driving other layers to unfold. As the temperature continues to spread, the shape memory transition temperature of the fireproof layer is reached. After the fireproof layer expands, it begins to unfold. At this time, the temperature has reached the shape transition temperature of each layer in the fireproof roller shutter door, and the entire fireproof roller shutter door will unfold to the desired position. Figure 3 The initial structure shown forms a fire door that isolates the fire.

[0049] When a fire breaks out, such as Figures 2 to 3 As shown, the fireproof roller shutter door of this invention can be deformed from a temporary rolled shape back to its initial shape, thereby automatically closing the fireproof roller shutter door to isolate the fire. When the fire ends, it can be heated, compressed, and rolled into a temporary shape for reuse.

[0050] According to some preferred embodiments, the responsive layer is a continuous fiber-reinforced shape memory polymer material;

[0051] The continuous fiber is carbon fiber, and the shape memory polymer material is at least one of shape memory epoxy resin, shape memory styrene resin, shape memory polycaprolactone, or shape memory polylactic acid.

[0052] In this invention, the aforementioned shape memory polymer materials possess a relatively fast shape memory response time. By using a shape memory polymer material with a good response speed as the matrix material and supplementing it with a certain amount of continuous fibers to enhance the shape recovery force of the shape memory polymer material, this not only helps ensure that the response layer responds quickly to thermal signals to unfold its shape, but also ensures that the response layer has a certain recovery driving force to drive other layers to unfold their shapes rapidly. The shape transition temperature of the response layer in this invention is 100–120°C, and the response time is 0–10 s.

[0053] It should be noted that the continuous fiber reinforced shape memory polymer material in this invention can be prepared using existing preparation methods. For example, a certain amount of continuous fiber and shape memory polymer can be prepared by vacuum bag pressing. The mass ratio of continuous fiber to shape memory polymer can be 1:4.

[0054] According to some preferred embodiments, both the first fireproof layer and the second fireproof layer are shape memory polymer foam composite materials;

[0055] The shape memory polymer foam composite material has a cell diameter of 120-150 μm (for example, it can be 120 μm, 130 μm, 140 μm or 150 μm).

[0056] In this invention, both the first and second fireproof layers are made of shape memory polymer foam composite material. The cell size of the foam composite material after foaming is preferably within the range mentioned above. This ensures good compressibility of the fireproof roller shutter door, and in the event of a fire, the fireproof layer expands to a greater thickness and volume, resulting in better fire protection. The matrix of the shape memory polymer foam composite material is an ablation-resistant shape memory polymer, which possesses certain high-temperature resistance, ablation resistance, and flame-retardant properties. In the event of a fire, the fireproof layer not only expands under the influence of heat but also maintains its shape at high temperatures, effectively preventing the spread of fire. Furthermore, the shape memory polymer foam composite material in this invention also possesses multi-dimensional deformation properties, capable of both compression and curling deformation. In its unused state, the fireproof roller shutter door can be heated, compressed, and curled into a temporary shape for easy passage. In this invention, the shape transition temperature of the shape memory polymer foam composite material is 120–150°C.

[0057] According to some preferred embodiments, both the first refractory layer and the second refractory layer are flexible refractory fiber braids;

[0058] The flexible refractory fiber is at least one of polycrystalline mullite fiber, alumina fiber, or silicon carbide fiber.

[0059] In this invention, the first and second fire-resistant layers are located on the outermost side of the fire-resistant roller shutter door. A fiber woven body (e.g., fiber felt or fiber blanket) formed from flexible fire-resistant fibers is used as the fire-resistant layer. The flexible fire-resistant fibers are characterized by good thermal stability, thermal shock resistance, light weight, and easy deformation. This gives the first and second fire-resistant layers good ablation resistance and conformability. In the event of a fire, the outer fire-resistant layer is less prone to deformation or collapse after ablation, thus ensuring the integrity of the internal structure of the fire-resistant roller shutter door. Furthermore, when the temperature reaches the shape transition temperature of the inner fire-resistant layer and the response layer, the outer fire-resistant layer can unfold simultaneously with the internal structural layers of the fire-resistant roller shutter door, thereby isolating the spread of fire and smoke. Simultaneously, to ensure the fiber woven body has sufficient thermal conductivity so that the fire-resistant roller shutter door can unfold sequentially in a short time, the density of the fiber woven body in the fire-resistant layer is preferably less than 0.2 g / cm³. 3 The porosity is greater than 90%.

[0060] According to some preferred embodiments, the thickness of the first fireproof layer and the second fireproof layer is 0.5 to 1 cm (for example, it can be 0.5 cm, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm or 1 cm), and the thickness of the first fire-resistant layer and the second fire-resistant layer is 1 to 2 cm (for example, it can be 1 cm, 1.2 cm, 1.4 cm, 1.5 cm, 1.8 cm or 2 cm).

[0061] In this invention, the two fireproof layers and two fire-resistant layers in the fire-resistant roller shutter door are preferably of the thicknesses mentioned above. This not only ensures that the fire-resistant roller shutter door has good rollability when not in use, but also ensures that the fire-resistant roller shutter door has good fire resistance performance after a fire breaks out. For example, if the thickness of the fire-resistant layer on the outside of the fire-resistant roller shutter door is too small, it will reduce the fire resistance performance of the fire-resistant roller shutter door. When the fire is large, the fire-resistant layer will be damaged and will not be able to protect the structure of the inner layer of the fire-resistant roller shutter door. As a result, the fire-resistant roller shutter door cannot effectively isolate the fire source and smoke, which greatly threatens personal and property safety. Although increasing the thickness of the fire-resistant layer can enhance the fire resistance performance of the fire-resistant layer, if the thickness of the fire-resistant layer is too large, it will not only be detrimental to ensuring that the fire-resistant roller shutter door can roll up well, but also to the timely transfer of temperature to the fireproof layer. As a result, it will be detrimental to the timely unfolding of the fire-resistant roller shutter door under the action of heat signal, so as to timely isolate the fire.

[0062] The present invention also provides a method for preparing the shape memory fireproof roller shutter door as described in any one of the above claims, the method comprising the following steps:

[0063] (1) Provide a fire-resistant layer and a fireproof layer; wherein the fire-resistant layer includes a first fire-resistant layer and a second fire-resistant layer, and the fireproof layer includes a first fireproof layer and a second fireproof layer;

[0064] (2) The first fire-resistant layer, the first fireproof layer, the second fireproof layer and the second fire-resistant layer are sequentially combined to obtain the curtain body;

[0065] (3) One end of the curtain is attached to the connecting rod to obtain the shape memory fireproof roller shutter door.

[0066] In this invention, firstly, the dimensions of the curtain and connecting rod of the fireproof roller shutter door are designed according to the requirements of the application scenario. The length of the connecting rod is greater than the width of the curtain. Flexible fiber braid and ablation-resistant shape memory polymer foam composite powder are cut to appropriate sizes to obtain a fire-resistant layer and a fireproof layer. Then, adhesive is applied to the upper and lower surfaces of the first and second fireproof layers. The first fire-resistant layer, the first fireproof layer, the second fireproof layer, and the second fire-resistant layer are then bonded together sequentially to obtain the curtain structure of the fireproof roller shutter door. Finally, in... Adhesive is applied to one end of the curtain structure or the connecting rod to fix one end of the curtain to the connecting rod, thus obtaining a fireproof rolling shutter door. In the non-use state, the curtain can be heated and compressed to roll up onto the connecting rod, and the fireproof rolling shutter door is fixed to the door frame through the connecting rod. In daily life, it not only facilitates the passage of people, but in the event of a fire, the heat spreads rapidly upward, causing the temperature of the fireproof rolling shutter door to rise rapidly. After reaching the shape memory transformation temperature of the fireproof rolling shutter door, the fireproof rolling shutter door will automatically open and close to isolate the fire.

[0067] According to some preferred embodiments, the method for preparing the fireproof layer is as follows:

[0068] (11) Mix the ablation-resistant shape memory polymer material and flame retardant particles to obtain a mixed system;

[0069] (12) Add a foaming agent to the mixture and stir to foam to obtain the fireproof layer.

[0070] In this invention, the fireproof layer is prepared by mixing ablation-resistant shape memory polymer material and flame retardant particles in a certain proportion and then using a foaming method. When preparing the fireproof layer, flame retardant particles can first be added to the ablation-resistant shape memory polymer and stirred and mixed to obtain a mixed system. Then, a foaming agent with high-temperature volatility is added to the mixed system, and after stirring and foaming at a temperature of 75-85°C for 30-35 minutes, an ablation-resistant shape memory polymer foam composite material is formed.

[0071] According to some preferred embodiments, the ablation-resistant shape memory polymer material is at least one of shape memory phenolic resin, shape memory phthalonitrile resin, or shape memory benzoxazine resin;

[0072] The flame retardant particles are at least one of decabromodiphenyl ether, tetrabromobisphenol A, bis(2,3-dialkylpropyl) ether, octabromodiphenyl ether, magnesium hydroxide, aluminum hydroxide, silicon dioxide, tannin oxide, or silicon carbide.

[0073] The foaming agent is at least one of n-butane, n-pentane, isopentane, cyclopentane, n-hexane, or n-heptane.

[0074] According to some preferred embodiments, the components in the fireproof layer are present in the following percentages by weight: 75-90% (e.g., 75%, 80%, 85%, or 90%) of ablation-resistant shape memory polymer material, 5-15% (e.g., 5%, 8%, 10%, 12%, or 15%) of flame retardant particles, and 5-10% (e.g., 5%, 6%, 7%, 8%, or 10%) of foaming agent.

[0075] In this invention, the fireproof layer is prepared by mixing ablation-resistant shape memory polymer material and flame retardant particles in the above-mentioned proportions and then using a foaming method. The ablation-resistant shape memory polymer foam composite material formed after foaming has good fire resistance, mechanical properties, and multidimensional deformability. The inventors have confirmed through a large number of experiments that if the content of flame retardant particles is too low, it is not conducive to the uniform mixing of flame retardant particles and ablation-resistant shape memory polymer, thus not conducive to ensuring the good fire resistance of the ablation-resistant shape memory polymer foam composite material. If the content of flame retardant particles is too high, the flame retardant particles will agglomerate during the mixing and foaming process, which is also not conducive to ensuring the good fire resistance and mechanical properties of the ablation-resistant shape memory polymer foam composite material.

[0076] It should be noted that there is no particular limitation on the particle size of the flame retardant particles in this invention. In order to ensure the uniformity of the mixing of the ablation-resistant shape memory polymer and the flame retardant particles, it is preferable to use nano-sized flame retardant particles.

[0077] According to some preferred embodiments, the composite method is to use a shape memory adhesive for bonding; the shape memory adhesive is a two-component adhesive, preferably, the two-component adhesive is a shape memory epoxy resin and a shape memory phenolic resin.

[0078] To ensure good adhesion between the various layers of the fireproof roller shutter door and to further ensure that the fireproof roller shutter door can quickly respond to heat signals in the event of a fire, this invention preferably mixes shape memory epoxy resin and shape memory phenolic resin in a 3:2 mass ratio to obtain a two-component adhesive. This adhesive is a fluid viscous liquid at room temperature and cures into a solid film, possessing both good shape memory and adhesion properties. The shape transition temperature of the shape memory adhesive is 100℃. During lamination, the two-component adhesive can be applied to the surface of each layer, and the layers can be stacked sequentially. After curing at a high temperature, the adhesive generates strong force to firmly connect the layers together, resulting in the curtain structure. In this invention, the preferred curing temperature is 115–125℃, and the curing time is 4.5–5.5 hours.

[0079] This invention integrates shape memory polymer materials into the curtain structure of a fire-resistant roller shutter door. By designing each layer of the curtain structure with a different function and a symmetrical structure, when a fire occurs on one side of the fire-resistant roller shutter door, the responsive layer, driven by a heat signal (when the temperature is not less than 100°C), rapidly activates the fire-resistant and fire-resistant layers, causing the fire-resistant roller shutter door to automatically unfold from a temporary rolled-up state to a flat state, thereby isolating the spread of fire and smoke. Compared with existing fire doors, this invention significantly improves the unfolding efficiency of the fire-resistant roller shutter door, reduces the risk of activation during a fire, and enables automatic unfolding without power control, saving energy and avoiding secondary hazards caused by short circuits, thus providing better safety. Furthermore, the fire-resistant roller shutter door of this invention uses shape memory polymer materials and other lightweight materials, reducing the overall density and weight of the fire-resistant roller shutter door and preventing secondary hazards caused by the collapse of the fire-resistant roller shutter door in the event of a severe fire.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shape memory fireproof roller shutter door, characterized in that, include: The curtain body has a multi-layer structure, comprising, from top to bottom, a first fire-resistant layer, a first fireproof layer, a second fireproof layer, and a second fire-resistant layer. Both the first and second fireproof layers have shape memory properties. Both the first and second fireproof layers are made of shape memory polymer foam composite material. The pore diameter of the shape memory polymer foam composite material is 120-150 μm. Both the first and second fire-resistant layers are flexible refractory fiber braids. The flexible refractory fiber is at least one of polycrystalline mullite fiber, alumina fiber, or silicon carbide fiber. A connecting rod is connected to one end of the curtain body to install and fix the curtain body to the door frame; The curtain also includes a responsive layer located between the first fireproof layer and the second fireproof layer; the thickness of the responsive layer is 1-2 mm; the responsive layer is a continuous fiber reinforced shape memory polymer material; the continuous fiber is carbon fiber; and the shape memory polymer material is at least one of shape memory epoxy resin, shape memory styrene resin, shape memory polycaprolactone, or shape memory polylactic acid.

2. The shape memory fireproof roller shutter door according to claim 1, characterized in that, The thickness of the first fireproof layer and the second fireproof layer is 0.5~1cm, and the thickness of the first fire-resistant layer and the second fire-resistant layer is 1~2cm.

3. A method for preparing a shape memory fireproof roller shutter door according to any one of claims 1 to 2, characterized in that, The preparation method includes the following steps: (1) Provide a fire-resistant layer and a fireproof layer; wherein the fire-resistant layer includes a first fire-resistant layer and a second fire-resistant layer, and the fireproof layer includes a first fireproof layer and a second fireproof layer; The specific method for preparing the fireproof layer is as follows: (11) Mix the ablation-resistant shape memory polymer material and flame retardant particles to obtain a mixed system; (12) Add a foaming agent to the mixture and stir to foam to obtain the fireproof layer; The ablation-resistant shape memory polymer material is at least one of shape memory phenolic resin, shape memory phthalonitrile resin, or shape memory benzoxazine resin; The flame retardant particles are at least one of decabromodiphenyl ether, tetrabromobisphenol A, bis(2,3-dialkylpropyl) ether, octabromodiphenyl ether, magnesium hydroxide, aluminum hydroxide, silicon dioxide, tannin oxide, or silicon carbide. (2) The first fire-resistant layer, the first fireproof layer, the second fireproof layer and the second fire-resistant layer are sequentially combined to obtain the curtain body; (3) One end of the curtain is attached to the connecting rod to obtain the shape memory fireproof roller shutter door.

4. The preparation method according to claim 3, characterized in that, The foaming temperature is 75~85℃, and the foaming time is 30~35min.

5. The preparation method according to claim 3, characterized in that, The foaming agent is at least one of n-butane, n-pentane, isopentane, cyclopentane, n-hexane, or n-heptane.

6. The preparation method according to claim 3, characterized in that, The components in the fireproof layer are as follows by weight percentage: 75-90% heat-resistant shape memory polymer material, 5-15% flame retardant particles, and 5-10% foaming agent.

7. The preparation method according to claim 3, characterized in that, The composite method is to use shape memory adhesive for bonding. The shape memory adhesive is a two-component adhesive, which consists of shape memory epoxy resin and shape memory phenolic resin.

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