High-temperature-resistant degradable plastic material and preparation method thereof

Abstract

According to the high-temperature-resistant degradable plastic material and the preparation method thereof, the high-temperature-resistant degradable plastic material comprises a plastic matrix layer, the plastic matrix layer comprises a silver halide layer and a polyethylene terephthalate layer arranged on one side of the silver halide layer, a degradation assembly is arranged in the silver halide layer, and a flow equalizing assembly is arranged in the polyethylene terephthalate layer. According to the high-temperature-resistant degradable plastic material and the preparation method thereof, the design is reasonable, the silver halide layer with the degradation assembly is arranged on the surface of the polyethylene terephthalate layer, and the flow equalizing assembly is arranged in the polyethylene terephthalate layer, so that the problem that the degradation function of existing plastic is limited is effectively solved, and the high-temperature-resistant degradable plastic material is suitable for popularization and application. The degradation rate of the plastic in the natural environment is improved, and white pollution is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of plastic materials, and particularly relates to a high-temperature resistant and degradable plastic material and a preparation method thereof. Background Art

[0002] Plastic is a macromolecular compound mainly composed of synthetic resin, and has the characteristics of being lightweight, durable and easy to mold. Plastics can be polymerized by addition polymerization or condensation polymerization, and auxiliary materials such as plasticizers, stabilizers, lubricants and colorants can be added. Plastics have the characteristic of plasticity under specific conditions, that is, they can change shape when heated or pressurized and maintain the shape unchanged at room temperature.

[0003] However, when existing plastics are used, the following disadvantages may exist: 1. The degradation function is limited, and it is extremely difficult to degrade in the natural environment. It may take hundreds of years or even longer to gradually decompose, causing white pollution. 2. The high-temperature resistance performance is limited, which will affect the application scenarios of plastics and has limitations.

[0004] In order to solve the above problems, it is necessary to develop a high-temperature resistant and degradable plastic material and a preparation method. The high-temperature resistant and degradable plastic material is mainly composed of a plastic matrix layer, a polybenzimidazole layer and a high-temperature resistant layer. Through the special structure design of each layer and the setting of functional components, the problems of limited degradation function, insufficient high-temperature resistance performance and poor flame retardant performance of existing plastics are solved, and it has important environmental protection and industrial application values. Summary of the Invention

[0005] Object of the Invention: In order to overcome the above deficiencies, the object of the present invention is to provide a high-temperature resistant and degradable plastic material and a preparation method thereof, with reasonable design. On the one hand, by setting a silver halide layer with a degradation component on the surface of the polyethylene terephthalate layer and setting a flow equalizing component in the polyethylene terephthalate layer, the problem of limited degradation function of existing plastics is effectively solved, the degradation rate of plastics in the natural environment is improved, and white pollution is avoided. On the other hand, a polybenzimidazole layer with a flame retardant component is set on the plastic matrix layer, and a high-temperature resistant layer is set outside it, improving the flame retardant performance and high-temperature resistance performance of the plastic, extending the service life, broadening the application scenarios, improving the use flexibility, and having a wide application prospect.

[0006] The object of the present invention is achieved by the following technical solutions: A high-temperature resistant and degradable plastic material, comprising a plastic matrix layer; the plastic matrix layer includes a silver halide layer and a polyethylene terephthalate layer arranged on one side of the silver halide layer, a degradation component is arranged inside the silver halide layer, and a flow equalizing component is arranged inside the polyethylene terephthalate layer.

[0007] Preferably, the silver halide layer is one or a mixture of silver fluoride, silver chloride, silver bromide, and silver iodide.

[0008] Preferably, the polyethylene terephthalate layer includes, but is not limited to, blow-molding grade polyethylene terephthalate.

[0009] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, the plastic matrix layer includes: The first silver halide layer; The first polyethylene terephthalate layer, with the first polyethylene terephthalate layer disposed on the lower side of the first silver halide layer; The second silver halide layer, with the second silver halide layer disposed on the lower side of the first polyethylene terephthalate layer; The second polyethylene terephthalate layer, with the second polyethylene terephthalate layer disposed on the lower side of the second silver halide layer; The third silver halide layer, with the third silver halide layer disposed on the lower side of the second polyethylene terephthalate layer; Among them, a degradation component is provided inside the first silver halide layer and / or the second silver halide layer and / or the third silver halide layer; a flow equalization component is provided inside the first polyethylene terephthalate layer and / or the second polyethylene terephthalate layer.

[0010] Preferably, the plastic matrix layer is composed of the first silver halide layer, the first polyethylene terephthalate layer, the second silver halide layer, the second polyethylene terephthalate layer, and the third silver halide layer arranged in sequence, and the thickness ratio of each layer is 1:1:1:1:1.

[0011] Preferably, a degradation component is provided inside each of the first silver halide layer, the second silver halide layer, and the third silver halide layer; a flow equalization component is provided inside each of the first polyethylene terephthalate layer and the second polyethylene terephthalate layer.

[0012] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, the degradation component includes: The first cavity, with the first cavity opened inside the silver halide layer; Epoxy acrylate, with epoxy acrylate provided in the first cavity.

[0013] Preferably, the first cavity is opened inside each of the first silver halide layer, the second silver halide layer, and the third silver halide layer.

[0014] Preferably, the epoxy acrylate is obtained by reacting bisphenol A type epoxy resin with acrylic acid.

[0015] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, the flow equalization component includes: The first horizontal flow groove, and a plurality of first horizontal flow grooves are provided in the upper part of the polyethylene terephthalate layer; The second horizontal flow groove, and a plurality of second horizontal flow grooves are provided in the lower part of the polyethylene terephthalate layer.

[0016] Preferably, a plurality of first horizontal flow grooves are provided in the upper parts of both the first polyethylene terephthalate layer and the second polyethylene terephthalate layer. A plurality of second horizontal flow grooves are provided in the lower parts of both the first polyethylene terephthalate layer and the second polyethylene terephthalate layer.

[0017] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, the flow equalizing assembly further includes: The first vertical flow groove, and a plurality of first vertical flow grooves are provided in the polyethylene terephthalate layer at positions above the first horizontal flow groove, and the first vertical flow grooves are communicated with the first horizontal flow grooves; The second vertical flow groove, and a plurality of second vertical flow grooves are provided in the polyethylene terephthalate layer at positions between the first horizontal flow groove and the second horizontal flow groove, and the second vertical flow grooves are communicated with the first horizontal flow groove and the second horizontal flow groove; The third vertical flow groove, and a plurality of third vertical flow grooves are provided in the polyethylene terephthalate layer at positions below the second horizontal flow groove, and the third vertical flow grooves are communicated with the second horizontal flow groove.

[0018] The first horizontal flow groove, the second horizontal flow groove, the first vertical flow groove, the second vertical flow groove, and the third vertical flow groove are used to make the epoxy acrylate evenly distributed in the polyethylene terephthalate layer.

[0019] Preferably, a plurality of first vertical flow grooves are provided in both the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions above the first horizontal flow groove. A plurality of second vertical flow grooves are provided in both the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions between the first horizontal flow groove and the second horizontal flow groove; a plurality of third vertical flow grooves are provided in both the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions below the second horizontal flow groove.

[0020] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, the flow equalizing assembly further includes: The first residue groove, and a plurality of first residue grooves are provided in the polyethylene terephthalate layer at positions on both sides of the first vertical flow groove, and the first residue grooves are communicated with the first vertical flow grooves; Second residual grooves. A plurality of second residual grooves are formed in the polyethylene terephthalate layer at positions on both sides of the second vertical flow groove, and the second residual grooves communicate with the second vertical flow groove; Third residual grooves. A plurality of third residual grooves are formed in the polyethylene terephthalate layer at positions on both sides of the third vertical flow groove, and the third residual grooves communicate with the third vertical flow groove.

[0021] The first residual grooves, second residual grooves, and third residual grooves are used to temporarily store epoxy acrylate to ensure its continuous action.

[0022] Preferably, a plurality of first residual grooves are formed in the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions on both sides of the first vertical flow groove. A plurality of second residual grooves are formed in the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions on both sides of the second vertical flow groove. A plurality of third residual grooves are formed in the first polyethylene terephthalate layer and the second polyethylene terephthalate layer at positions on both sides of the third vertical flow groove.

[0023] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, a first polybenzimidazole layer is provided on the upper side of the plastic matrix layer, and a second polybenzimidazole layer is provided on the lower side of the plastic matrix layer.

[0024] Preferably, the material grades of the first polybenzimidazole layer and the second polybenzimidazole layer include but are not limited to the Celazole® T series.

[0025] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, a flame retardant component is provided inside the first polybenzimidazole layer and / or the second polybenzimidazole layer; Among them, the flame retardant component includes: Second cavities. Second cavities are formed inside the first polybenzimidazole layer and / or the second polybenzimidazole layer; Ultra-fine dry powder fire extinguishing agent. An ultra-fine dry powder fire extinguishing agent is provided in the second cavities, and the ultra-fine dry powder fire extinguishing agent is bonded together by inorganic silica gel.

[0026] Preferably, the model of the ultra-fine dry powder fire extinguishing agent includes but is not limited to FZX-ACT3 / 1.2, and the particle size is less than 5 μm.

[0027] Preferably, the model of the inorganic silica gel includes but is not limited to TFS.

[0028] Preferably, flame retardant components are provided inside both the first polybenzimidazole layer and the second polybenzimidazole layer. Second cavities are formed inside both the first polybenzimidazole layer and the second polybenzimidazole layer.

[0029] Furthermore, for the above-mentioned high-temperature resistant and degradable plastic material, a first high-temperature resistant layer is disposed on the upper side of the first polybenzimidazole layer, and a second high-temperature resistant layer is disposed on the lower side of the second polybenzimidazole layer.

[0030] Preferably, the first high-temperature resistant layer and the second high-temperature resistant layer include, but are not limited to, polyurethane containing Bacillus subtilis spores.

[0031] The present invention also relates to a preparation method of the high-temperature resistant and degradable plastic material, comprising the following steps: Step 1: Fill epoxy acrylate in the first cavity of the silver halide layer, so that a degradation component is formed inside the silver halide layer; Step 2: Form a uniform flow component inside the polyethylene terephthalate layer by injection molding; Step 3: Bond the silver halide and the polyethylene terephthalate layer together to obtain a plastic matrix layer; Step 4: Place a mixture of ultrafine dry powder fire extinguishing agent and inorganic silica gel in the second cavity of the polyethylene terephthalate layer, so that a flame retardant component is formed inside the polyethylene terephthalate layer; Step 5: Bond the first polybenzimidazole layer and the second polybenzimidazole layer on the upper and lower sides of the plastic matrix layer respectively; Step 6: Bond the first high-temperature resistant layer on the upper side of the first polybenzimidazole layer and bond the second high-temperature resistant layer on the lower side of the second polybenzimidazole layer to obtain the high-temperature resistant and degradable plastic material.

[0032] Preferably, inorganic silica gel is used for bonding.

[0033] Compared with the prior art, the present invention has the following beneficial effects: (1) The high-temperature resistant and degradable plastic material disclosed by the present invention improves the degradable performance: By providing a silver halide layer with a degradation component on the surface of the polyethylene terephthalate layer and arranging a uniform flow component in the polyethylene terephthalate layer, when the silver halide layer starts to degrade under a certain physical or chemical action, epoxy acrylate is released, accelerating the decomposition of the polyethylene terephthalate layer and improving the overall degradation rate of the plastic, effectively avoiding white pollution; The uniform flow component includes a first horizontal flow channel, a second horizontal flow channel, a first vertical flow channel, a first residual tank, a second vertical flow channel, a second residual tank, a third vertical flow channel and a third residual tank, etc. These flow channels and residual tanks are interconnected, enabling epoxy acrylate to be evenly dispersed in the polyethylene terephthalate layer, ensuring the uniformity and efficiency of the degradation process; (2) The high-temperature resistant and degradable plastic material disclosed by the present invention enhances the high-temperature resistance: a first polybenzimidazole layer and a second polybenzimidazole layer are respectively arranged on both sides of the plastic matrix layer. Polybenzimidazole itself has good high-temperature resistance and can improve the heat resistance of the plastic material to a certain extent. A first high-temperature resistant layer and a second high-temperature resistant layer are respectively arranged on the outer sides of the first polybenzimidazole layer and the second polybenzimidazole layer, further improving the high-temperature resistance of the plastic and broadening its application scenarios. (3) The high-temperature resistant and degradable plastic material disclosed by the present invention improves the flame retardancy: a flame retardant component is arranged in the first polybenzimidazole layer and the second polybenzimidazole layer, that is, ultrafine dry powder fire extinguishing agent bonded together by inorganic silica gel is filled in the opened second cavity. When the plastic material encounters a fire source, the ultrafine dry powder fire extinguishing agent can quickly take effect, inhibit the spread of the fire, improve the flame retardancy of the plastic, and extend its service life. (4) The preparation method of the high-temperature resistant and degradable plastic material disclosed by the present invention has clear steps and strong operability. Epoxy acrylate is filled in the first cavity to endow the silver halide layer with a degradation function. A uniform flow component is formed in the polyethylene terephthalate layer by injection molding. The injection molding process can accurately manufacture the required flow channel structure. Each layer is bonded together in sequence to obtain the plastic matrix layer. Preferably, inorganic silica gel is used for bonding. Inorganic silica gel has good bonding performance and stability and can ensure the firm combination between layers. A mixture of ultrafine dry powder fire extinguishing agent and inorganic silica gel is placed in the second cavity to endow the polybenzimidazole layer with a flame retardant function. The first polybenzimidazole layer and the second polybenzimidazole layer are respectively bonded on both sides of the plastic matrix layer to further enhance the performance of the material. The first high-temperature resistant layer and the second high-temperature resistant layer are respectively bonded on the outer sides of the first polybenzimidazole layer and the second polybenzimidazole layer to obtain the high-temperature resistant and degradable plastic material. Brief Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the high-temperature resistant and degradable plastic material described in the present invention; Figure 2 is a schematic cross-sectional view of the plastic matrix layer of the high-temperature resistant and degradable plastic material described in the present invention; Figure 3 is of the high-temperature resistant and degradable plastic material described in the present invention Figure 2 enlarged schematic view of the structure at A in; Figure 4 is a top view schematic diagram of the first polyethylene terephthalate layer of the high-temperature resistant and degradable plastic material described in the present invention; Figure 5 is a schematic cross-sectional view of the first polybenzimidazole layer of the high-temperature resistant and degradable plastic material described in the present invention; In the figure: plastic matrix layer 100, first silver halide layer 110, first cavity 111, epoxy acrylate 112, first polyethylene terephthalate layer 120, first transverse flow groove 121, second transverse flow groove 122, first vertical flow groove 123, first residual groove 124, second vertical flow groove 125, second residual groove 126, third vertical flow groove 127, third residual groove 128, second silver halide layer 130, second polyethylene terephthalate layer 140, third silver halide layer 150, first polybenzimidazole layer 200, second cavity 210, ultrafine dry powder fire extinguishing agent 220, second polybenzimidazole layer 300, first high-temperature resistant layer 400, second high-temperature resistant layer 500. Detailed implementation mode

[0035] Next, in combination with Figure 1 , 2 , 3, 4, 5 and specific experimental data, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. The present invention provides a high-temperature resistant and degradable plastic material, including a plastic matrix layer 100.

[0036] As Figure 2 shown, the plastic matrix layer 100 includes: a first silver halide layer 110, a first polyethylene terephthalate layer 120, a second silver halide layer 130, a second polyethylene terephthalate layer 140, and a third silver halide layer 150. Among them, a first polyethylene terephthalate layer 120 is provided on the lower side of the first silver halide layer 110, a second silver halide layer 130 is provided on the lower side of the first polyethylene terephthalate layer 120, a second polyethylene terephthalate layer 140 is provided on the lower side of the second silver halide layer 130, and a third silver halide layer 150 is provided on the lower side of the second polyethylene terephthalate layer 140.

[0037] In addition, the first silver halide layer 110, the second silver halide layer 130, and the third silver halide layer 150 all adopt one or a mixture of silver fluoride, silver chloride, silver bromide, and silver iodide. The first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 adopt blow molding grade polyethylene terephthalate.

[0038] Furthermore, the thicknesses of the first silver halide layer 110, the first polyethylene terephthalate layer 120, the second silver halide layer 130, the second polyethylene terephthalate layer 140, and the third silver halide layer 150 are 1:1:1:1:1.

[0039] Further, degradation components are provided in the first silver halide layer 110, the second silver halide layer 130, and the third silver halide layer 150.

[0040] Specifically, the degradation component includes: a first cavity 111 and epoxy acrylate 112. First cavities 111 are provided inside the first silver halide layer 110, the second silver halide layer 130, and the third silver halide layer 150, and epoxy acrylate 112 is provided in the first cavities 111. Among them, epoxy acrylate 112 is obtained by reacting bisphenol A type epoxy resin with acrylic acid.

[0041] Further, flow equalizing components are provided in the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140.

[0042] As Figure 2 、 3 、shown in FIG. 4, the flow equalizing component includes: a first horizontal flow channel 121, a second horizontal flow channel 122, a first vertical flow channel 123, a first residual channel 124, a second vertical flow channel 125, a second residual channel 126, a third vertical flow channel 127, and a third residual channel 128.

[0043] Specifically, a number of first horizontal flow grooves 121 are provided at the top ends of the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140. A number of second horizontal flow grooves 122 are provided at the bottom ends of the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140. A number of first vertical flow grooves 123 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 above the first horizontal flow grooves 121, and the first vertical flow grooves 123 communicate with the first horizontal flow grooves 121. A number of second vertical flow grooves 125 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 between the first horizontal flow grooves 121 and the second horizontal flow grooves 122, and the second vertical flow grooves 125 communicate with the first horizontal flow grooves 121 and the second horizontal flow grooves 122. A number of third vertical flow grooves 127 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 below the second horizontal flow grooves 122, and the third vertical flow grooves 127 communicate with the second horizontal flow grooves 122. A number of first residue grooves 124 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 on both sides of the first vertical flow grooves 123, and the first residue grooves 124 communicate with the first vertical flow grooves 123. A number of second residue grooves 126 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 on both sides of the second vertical flow grooves 125, and the second residue grooves 126 communicate with the second vertical flow grooves 125. A number of third residue grooves 128 are provided on the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 on both sides of the third vertical flow grooves 127, and the third residue grooves 128 communicate with the third vertical flow grooves 127.

[0044] As Figure 1 shown, a first polybenzimidazole layer 200 is provided on the upper side of the plastic matrix layer 100, and a second polybenzimidazole layer 300 is provided on the lower side of the plastic matrix layer 100. Among them, the material grades of the first polybenzimidazole layer 200 and the second polybenzimidazole layer 300 are Celazole® T series, and the molecular weight is about 532.589.

[0045] Furthermore, a flame retardant component is provided in both the first polybenzimidazole layer 200 and the second polybenzimidazole layer 300.

[0046] Specifically, as Figure 5 shown, the flame retardant component includes: a second cavity 210, an ultrafine dry powder fire extinguishing agent 220.

[0047] Both the first polybenzimidazole layer 200 and the second polybenzimidazole layer 300 are provided with a second cavity 210 inside. An ultrafine dry powder fire extinguishing agent 220 is arranged in the second cavity 210, and the ultrafine dry powder fire extinguishing agents 220 are bonded together by an inorganic silica gel. Among them, the model of the ultrafine dry powder fire extinguishing agent 220 is FZX-ACT3 / 1.2, and the particle size of the ultrafine dry powder fire extinguishing agent 220 is less than 5 μm. In addition, the model of the inorganic silica gel is TFS.

[0048] As Figure 1 shown, a first high-temperature resistant layer 400 is arranged on the upper side of the first polybenzimidazole layer 200, and a second high-temperature resistant layer 500 is arranged on the lower side of the second polybenzimidazole layer 300. Among them, the materials of the first high-temperature resistant layer 400 and the second high-temperature resistant layer 500 are both polyurethanes containing Bacillus subtilis spores.

[0049] Based on the above, the degradation process of the present invention is as follows: when the first silver halide layer 110, the second silver halide layer 130, and the third silver halide layer 150 are degraded, the epoxy acrylate 112 in their inner cavities will flow into the flow equalizing component, so as to be evenly distributed in the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 under the action of the flow equalizing component. Thus, the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 can be degraded under the action of the epoxy acrylate.

[0050] The preparation method of the high-temperature resistant and degradable plastic material of the present invention includes the following specific steps: Step 1: Fill the epoxy acrylate 112 in the first cavity 111 to form a degradation component in the first silver halide layer 110, the second silver halide layer 130, and the third silver halide layer 150. Step 2: Form a flow equalizing component in the first polyethylene terephthalate layer 120 and the second polyethylene terephthalate layer 140 by injection molding. Step 3: Bond the first silver halide layer 110, the first polyethylene terephthalate layer 120, the second silver halide layer 130, the second polyethylene terephthalate layer 140, and the third silver halide layer 150 together in sequence (using inorganic silica gel) to obtain a plastic matrix layer 100. Step 4: Place a mixture of the ultrafine dry powder fire extinguishing agent 220 and the inorganic silica gel in the second cavity 210 to form a flame retardant component in the first polybenzimidazole layer 200 and the second polybenzimidazole layer 300. Among them, the mixing ratio of the ultrafine dry powder fire extinguishing agent 220 and the inorganic silica gel is 1:0.8. Step 5: Bond the first polybenzimidazole layer 200 and the second polybenzimidazole layer 300 to both sides of the plastic matrix layer 100 respectively (using inorganic silica gel). Step Six: Bond (using inorganic silicone gel) the first high-temperature resistant layer 400 to one side of the first polybenzimidazole layer 200, and bond the second high-temperature resistant layer 500 to one side of the second polybenzimidazole layer 300. Thus, a high-temperature resistant and degradable plastic material is obtained.

[0051] After testing the high-temperature resistant and degradable plastic material prepared by the present invention for its high-temperature resistance, degradation rate, and flame retardant performance, the performance data is shown in Table 1 below.

[0052] Table 1 High temperature resistance Degradation rate Flame retardant rating Long-term use in the temperature range of -200 - 260 °C Under ultraviolet irradiation, the half-life is about 2 - 3 years V-0 grade As can be seen from Table 1, the high-temperature resistant and degradable plastic material prepared by the present invention has good performance in terms of high-temperature resistance, degradation rate, and flame retardant grade.

[0053] In summary, the present invention provides an innovative and practical high-temperature resistant and degradable plastic material and its preparation method, which has the following advantages: 1. Improvement in degradation performance: By providing a silver halide layer with a degradation component inside on the surface of the polyethylene terephthalate layer, and arranging a flow equalization component in the polyethylene terephthalate layer, the problem of limited degradation function of existing plastics is effectively solved, the degradation rate of plastics in the natural environment is increased, white pollution is reduced. Compared with traditional plastics, the material of the present invention can decompose faster in the same environment, reducing the long-term impact on the environment.

[0054] 2. Enhancement of flame retardant performance: By providing a polybenzimidazole layer with a flame retardant component inside on the plastic matrix layer, the flame retardant performance of the plastic is greatly improved, and the service life of the material is extended. In some fields with high fire protection requirements, the material of the present invention can provide better safety protection; 3. Improvement in high-temperature resistant performance: By providing a high-temperature resistant layer on the polybenzimidazole layer, the problem of limited high-temperature resistant performance of existing plastics is solved, the application scenarios of the material are broadened, and the use flexibility is improved.

[0055] Therefore, the present invention can play an important role in solving the problem of plastic pollution and expanding the application fields of plastics.

[0056] There are many specific application ways of the present invention, and the above description is only the preferred implementation mode of the present invention. It should be noted that the above embodiments are only used to illustrate the present invention, and do not limit the protection scope of the present invention. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements can still be made, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A high-temperature resistant and degradable plastic material, characterized in that, It includes a plastic matrix layer (100); the plastic matrix layer (100) includes a silver halide layer and a polyethylene terephthalate layer provided on one side of the silver halide layer, a degradation component is provided inside the silver halide layer (150), and a flow equalization component is provided inside the polyethylene terephthalate layer.

2. The high-temperature resistant and degradable plastic material according to claim 1, characterized in that The plastic matrix layer (100) includes: The first silver halide layer (110); The first polyethylene terephthalate layer (120), the first polyethylene terephthalate layer (120) is provided below the first silver halide layer (110); The second silver halide layer (130), the second silver halide layer (130) is provided below the first polyethylene terephthalate layer (120); The second polyethylene terephthalate layer (140), the second polyethylene terephthalate layer (140) is provided below the second silver halide layer (130); The third silver halide layer (150), the third silver halide layer (150) is provided below the second polyethylene terephthalate layer (140); Wherein, a degradation component is provided inside the first silver halide layer (110) and / or the second silver halide layer (130) and / or the third silver halide layer (150); a flow equalization component is provided inside the first polyethylene terephthalate layer (120) and / or the second polyethylene terephthalate layer (140).

3. The heat-resistant and degradable plastic material according to claim 1, characterized in that, The degradation component includes: The first cavity (111), the first cavity (111) is opened inside the silver halide layer; Epoxy acrylate (112), epoxy acrylate (112) is provided in the first cavity (111).

4. The high-temperature resistant and degradable plastic material according to claim 1, characterized in that, The flow equalization component includes: The first horizontal flow-through grooves (121), several first horizontal flow-through grooves (121) are opened in the upper part of the polyethylene terephthalate layer; The second horizontal flow-through grooves (122), several second horizontal flow-through grooves (122) are opened in the lower part of the polyethylene terephthalate layer.

5. The high-temperature resistant and degradable plastic material according to claim 4, characterized in that, The flow equalization component further includes: The first vertical flow-through grooves (123), several first vertical flow-through grooves (123) are opened in the polyethylene terephthalate layer at a position above the first horizontal flow-through grooves (121), and the first vertical flow-through grooves (123) are communicated with the first horizontal flow-through grooves (121); The second vertical flow-through grooves (125), several second vertical flow-through grooves (125) are opened in the polyethylene terephthalate layer at a position between the first horizontal flow-through grooves (121) and the second horizontal flow-through grooves (122), and the second vertical flow-through grooves (125) are communicated with the first horizontal flow-through grooves (121) and the second horizontal flow-through grooves (122); The third vertical flow-through grooves (127), several third vertical flow-through grooves (127) are opened in the polyethylene terephthalate layer at a position below the second horizontal flow-through grooves (122), and the third vertical flow-through grooves (127) are communicated with the second horizontal flow-through grooves (122).

6. The high-temperature resistant and degradable plastic material according to claim 5, characterized in that, The flow equalization component further includes: The first residual groove (124), the polyethylene terephthalate layer is provided with a plurality of first residual grooves (124) at positions on both sides of the first vertical flow groove (123), and the first residual groove (124) communicates with the first vertical flow groove (123); The second residual groove (126), the polyethylene terephthalate layer is provided with a plurality of second residual grooves (126) at positions on both sides of the second vertical flow groove (125), and the second residual groove (126) communicates with the second vertical flow groove (125); The third residual groove (128), the polyethylene terephthalate layer is provided with a plurality of third residual grooves (128) at positions on both sides of the third vertical flow groove (127), and the third residual groove (128) communicates with the third vertical flow groove (127).

7. The high-temperature resistant and degradable plastic material according to claim 1, wherein A first polybenzimidazole layer (200) is provided on the upper side of the plastic matrix layer (100), and a second polybenzimidazole layer (300) is provided on the lower side of the plastic matrix layer (100).

8. The high-temperature resistant and degradable plastic material according to claim 7, wherein A flame retardant component is provided inside the first polybenzimidazole layer (200) and / or the second polybenzimidazole layer (300); Wherein, the flame retardant component includes: The second cavity (210), the second cavity (210) is formed inside the first polybenzimidazole layer (200) and / or the second polybenzimidazole layer (300); Ultra-fine dry powder fire extinguishing agent (220), the ultra-fine dry powder fire extinguishing agent (220) is provided in the second cavity (210), and the ultra-fine dry powder fire extinguishing agent (220) is bonded together by inorganic silica gel.

9. The high-temperature resistant and degradable plastic material according to claim 7, characterized in that, A first high temperature resistant layer (400) is provided on the upper side of the first polybenzimidazole layer (200), and a second high temperature resistant layer (500) is provided on the lower side of the second polybenzimidazole layer (300).

10. The preparation method of the high-temperature resistant and degradable plastic material according to any one of claims 1 to 9, characterized in that, Including the following steps: Step 1: Fill epoxy acrylate (112) in the first cavity (111) of the silver halide layer, so that a degradation component is formed inside the silver halide layer; Step 2: Form a uniform flow component inside the polyethylene terephthalate layer by injection molding; Step 3: Bond the silver halide and the polyethylene terephthalate layer together to obtain the plastic matrix layer (100); Step 4: Place a mixture of ultra-fine dry powder fire extinguishing agent (220) and inorganic silica gel in the second cavity (210) of the polyethylene terephthalate layer, so that a flame retardant component is formed inside the polyethylene terephthalate layer; Step 5: Bond the first polybenzimidazole layer (200) and the second polybenzimidazole layer (300) on the upper and lower sides of the plastic matrix layer (100) respectively; Step 6: Bond the first high temperature resistant layer (400) on the upper side of the first polybenzimidazole layer (200), and bond the second high temperature resistant layer (500) on the lower side of the second polybenzimidazole layer (300) to obtain a high temperature resistant and degradable plastic material.

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