A kind of plastic product based on polypropylene and its production method

Abstract

The invention relates to the technical field of polypropylene, and discloses a plastic product based on polypropylene and a production method thereof. The plastic product comprises the following raw materials: polypropylene, a flame retardant synergist, a high temperature resistant component, a filler, a lubricant, a dispersant, and an antioxidant; wherein the flame retardant synergist is prepared by introducing a nitrogen-phosphorus flame retardant on the surface of boehmite, and can form an inorganic-organic composite flame retardant in a matrix, thereby effectively improving the flame retardant performance of the plastic product; and the high temperature resistant component is obtained by chemically connecting bicyclo[2.2.2]octane-1,4-dicarboxylic acid to the structure of methyl vinyl silicone rubber, and utilizing a large number of silicon oxygen bonds and rigid ring structures in the structure, thereby giving the plastic product excellent high temperature resistance, extending the service life of the plastic product, and being able to meet the use requirements of the plastic product in various environments.

Description

Technical Field

[0001] The invention relates to the technical field of polypropylene, and in particular to a plastic product based on polypropylene and a production method thereof. Background Art

[0002] Plastic products are a general term for daily necessities and industrial products made of plastic as the main raw material. Because of its advantages of light weight, low cost, durability, and strong plasticity, it is widely used in packaging, construction, home, agriculture, fishery and other fields. Among many plastic materials, polypropylene (PP) has become one of the preferred materials in the production of plastic products due to its advantages of low density, non-toxicity, low price, good electrical insulation, and easy processing. It is widely used in various fields. However, plastic products made of ordinary polypropylene materials have poor flame retardancy. When encountering a fire source, plastic products are easy to burn, and the heat released during combustion is large, a large number of molten droplets are generated, the flame propagates quickly, and it does not form carbon and is not easy to extinguish, which seriously endangers people's life and property safety. In addition, due to the lack of high temperature resistance, ordinary polypropylene materials are prone to softening or even melting in a high temperature environment, which leads to certain restrictions on the scope of use of plastic products. Therefore, it is of great practical significance to improve the flame retardancy and high temperature resistance of plastic products.

[0003] When using polypropylene to prepare plastic products, it is often necessary to modify it, and the optimization of the basic formula is one of the main ways to improve the performance of plastic products. For example, the invention patent with the publication number CN105602101B discloses a high heat-resistant halogen-free flame-retardant polypropylene composite material and its preparation method. The invention significantly improves the heat resistance of polypropylene materials by adding hollow glass microspheres and silicone flame retardants to the basic formula. Through the compounding of two different scale systems, the problem of polypropylene being easy to burn is solved. The obtained polypropylene composite material has high temperature resistance and good flame retardancy while ensuring the mechanical properties of the material, and can reduce the weight of the product. It is suitable for household appliances, automotive interior and exterior decoration and other fields. However, the surface of the hollow glass microspheres has not been organically modified, and its dispersibility in the polypropylene matrix material will be significantly reduced, which easily leads to mutual aggregation between particles and agglomeration. Therefore, the plastic products can be modified by adding additives with excellent flame retardancy and high temperature resistance to obtain high-performance plastic products. Summary of the invention

[0004] In order to solve the problems mentioned in the background technology, the object of the present invention is to provide a polypropylene-based plastic product and a production method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A polypropylene-based plastic product comprises the following raw materials in parts by weight: 40 to 60 parts of polypropylene, 4 to 8 parts of flame retardant synergist, 3 to 7 parts of high temperature resistant components, 7 to 9 parts of filler, 1 to 3 parts of lubricant, 1 to 3 parts of dispersant, and 1 to 2 parts of antioxidant.

[0007] Furthermore, the preparation method of the flame retardant synergist comprises the following steps:

[0008] Step D1: ultrasonically dispersing boehmite in an N-methylpyrrolidone solution, adding 4-bromobutyric acid and a catalyst under continuous nitrogen conditions, raising the system temperature to 100-110° C., stirring for 4-6 hours, allowing the material to cool naturally, centrifuging to separate solid material, washing the solid material, and vacuum drying to obtain modified boehmite;

[0009] Step D2: Add modified boehmite and N,N-dimethylformamide solution into the reactor, perform ultrasound to form a uniform dispersion, then add 5'-cytidylic acid and accelerator into the dispersion, raise the temperature to 70-80°C, keep stirring at this temperature for 4-8 hours, filter, collect the product, and dry to obtain a flame retardant synergist.

[0010] Furthermore, in step D1, the catalyst is any one of tetrabutyl titanate, tetraethyl titanate or tetraisopropyl titanate.

[0011] Furthermore, in step D1, the mass ratio of boehmite to 4-bromobutyric acid is 1:0.1-0.4.

[0012] Furthermore, in step D2, the promoter is any one of sodium carbonate, potassium carbonate or sodium bicarbonate.

[0013] Furthermore, the preparation method of the high temperature resistant component comprises the following steps:

[0014] Step DD1: under nitrogen protection, adding methyl vinyl silicone rubber to a toluene solution, mechanically stirring, adding 2-mercaptoethanol and a photoinitiator, mixing, placing the system under ultraviolet light for reaction for 3 to 6 hours, and removing the solvent by rotary evaporation to obtain a modified methyl vinyl silicone rubber;

[0015] Step DD2: Add modified methyl vinyl silicone rubber to the dimethyl sulfoxide solution and stir evenly. Under nitrogen protection, add bicyclo[2.2.2]octane-1,4-dicarboxylic acid and tetrabutyl titanate to the system. After the addition is completed, turn on the heating. After the system temperature reaches 100-110°C, stir at a constant temperature for 4-6 hours, stop heating and remove the nitrogen. After cooling to room temperature, discharge the material to obtain a high temperature resistant component.

[0016] Furthermore, in step DD1, the vinyl content in the methyl vinyl silicone rubber is 0.05 to 1.0 mol%.

[0017] Furthermore, in step DD1, the photoinitiator is any one of benzoin ethyl ether, benzoin isopropyl ether or benzoin dimethyl ether.

[0018] Furthermore, the filler is any one of titanium dioxide or talcum powder; the lubricant is any one of paraffin wax or polyethylene wax; the dispersant is any one of sodium dodecylbenzene sulfonate or polyethylene glycol; the antioxidant is any one of antioxidant 1010 or antioxidant 2246.

[0019] A method for producing a polypropylene-based plastic product comprises the following steps:

[0020] Step 1: Add polypropylene, flame retardant synergist, high temperature resistant component, filler, lubricant, dispersant and antioxidant into a mixer, raise the temperature to 80-100° C., stir and mix at a stirring rate of 400-600 r / min for 30-50 minutes to obtain a mixture;

[0021] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 160-170° C., the temperature of the second stage to 170-180° C., the temperature of the third stage to 180-190° C., and the temperature of the fourth stage to 190-200° C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0022] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0023] Beneficial effects of the present invention:

[0024] (1) The present invention prepares flame retardant synergists and high temperature resistant components and participates in the preparation process of plastic products, so that the prepared plastic products have a limiting oxygen index of up to 32.3% and a Vicat softening temperature of up to 115°C. The prepared plastic products have excellent flame retardant and high temperature resistance, can meet the use requirements of plastic products in various environments, are conducive to extending the service life of plastic products, and have greater practical promotion value.

[0025] (2) The present invention prepares a flame retardant synergist by introducing a nitrogen-phosphorus flame retardant on the surface of boehmite. After the boehmite is subjected to an organic modification treatment, the bonding force between the boehmite and the matrix is ​​greatly enhanced, so that the boehmite can be evenly dispersed in the matrix material, thereby avoiding the agglomeration problem caused by the interaction between the boehmite particles during the preparation process. Due to the unique lamellar structure of boehmite, after being evenly dispersed in the matrix, it can fully exert its barrier effect, prevent oxygen from entering the interior, inhibit the transfer of combustible gas and heat, greatly enhance the flame retardant ability of the plastic product, and reduce the generation and release of smoke. In addition, the nitrogen-phosphorus flame retardant introduced on the surface of boehmite can further improve the flame retardant performance of the plastic product, and the boehmite can form an inorganic-organic composite flame retardant with the surface-modified nitrogen-phosphorus flame retardant, so that the prepared plastic product can have excellent flame retardant performance by adding a small amount of flame retardant synergist, thereby effectively reducing the threat to personnel safety and the risk of property loss that may be caused when a fire occurs.

[0026] (3) The present invention prepares a high temperature resistant component as a filler modifier for plastic products. Since the high temperature resistant component contains a large amount of silicon-oxygen bonds and rigid ring structures, the high temperature resistance of the plastic products can be significantly improved, thereby preventing the plastic products from softening or melting in a high temperature environment. At the same time, the large amount of silicon-oxygen bonds in the structure can produce a synergistic effect with the flame retardant synergist, further enhancing the flame retardant properties of the plastic products, extending the service life of the plastic products, ensuring their stability and safety under various environmental conditions, and broadening the application range of the plastic products.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 This is an infrared spectrum test chart of the flame retardant synergist prepared in Example 1 of the present invention.

[0030] Figure 2 This is an infrared spectrum test chart of the high temperature resistant component prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0032] 1. Preparation of flame retardant synergist

[0033] Step D1: ultrasonically disperse 6 g of boehmite in an N-methylpyrrolidone solution, add 1.2 g of 4-bromobutyric acid and 0.05 g of tetrabutyl titanate under continuous nitrogen conditions, raise the system temperature to 105° C., stir for 5 h, allow the material to cool naturally, separate the solid material by centrifugation, wash the solid material, and vacuum dry to obtain modified boehmite;

[0034] Step D2: Add 6 g of modified boehmite and N,N-dimethylformamide solution into the reactor, perform ultrasound to form a uniform dispersion, then add 1.6 g of 5'-cytidylic acid and 0.1 g of potassium carbonate into the dispersion, raise the temperature to 75°C, keep stirring at this temperature for 6 hours, filter, collect the product, and dry it to obtain a flame retardant synergist.

[0035] The flame retardant synergist was analyzed by infrared spectroscopy using a WQF-310 Fourier transform infrared spectrometer. Figure 1 As shown by Figure 1 It can be seen that in the infrared spectrum of the flame retardant synergist, The absorption peak of the ester group C=O appears at The absorption peak of CN appears at The absorption peak of C=N appears at The absorption peak of P=O appears at The characteristic absorption peak of POC appears at The absorption peak of NH appears at

[0036] Technical principle: In step D1, the hydroxyl groups on the surface of boehmite can undergo esterification reaction with the carboxyl groups in the structure of 4-bromobutyric acid under the catalytic action of tetrabutyl titanate, thereby introducing halogen functional groups on the surface of boehmite to obtain modified boehmite; in step D2, the halogen functional groups on the surface of the modified boehmite can react with the amino groups in the structure of 5'-cytidylic acid under the action of potassium carbonate, thereby tightly combining the boehmite and 5'-cytidylic acid to obtain a flame retardant synergist.

[0037] 2. Preparation of high temperature resistant components

[0038] Step DD1: Under nitrogen protection, add 3 g of methyl vinyl silicone rubber with a vinyl content of 0.08 mol% to the toluene solution, stir mechanically, add 1 g of 2-mercaptoethanol and 0.05 g of benzoin ethyl ether, mix well, and place the system at 2.1 mw / cm 2 The reaction was carried out under ultraviolet irradiation for 5 hours, and the solvent was removed by rotary evaporation to obtain modified methyl vinyl silicone rubber;

[0039] Step DD2: Add 3 g of modified methyl vinyl silicone rubber to the dimethyl sulfoxide solution and stir evenly. Under nitrogen protection, add 1.2 g of bicyclo[2.2.2]octane-1,4-dicarboxylic acid and 0.08 g of tetrabutyl titanate to the system. After the addition is completed, turn on the heating. After the system temperature reaches 105°C, stir at a constant temperature for 5 hours. Stop heating and remove the nitrogen. After cooling to room temperature, discharge the material to obtain a high temperature resistant component.

[0040] The infrared spectrum analysis of the high temperature resistant components was performed using a WQF-310 Fourier transform infrared spectrometer. Figure 1 As shown by Figure 1 It can be seen that in the infrared spectrum of the high temperature resistant component, The absorption peak of Si-C appears at The absorption peak of Si-O-Si appears at The absorption peak of CS appears at The absorption peak of the ester group C=O appears at

[0041] Technical principle: In step DD1, benzoin ethyl ether is used as a photoinitiator. Under ultraviolet light irradiation, the unsaturated olefinic functional groups in the structure of methyl vinyl silicone rubber can undergo a click reaction with the thiol groups in the structure of 2-mercaptoethanol to obtain modified methyl vinyl silicone rubber; in step DD2, under the action of tetrabutyl titanate, the hydroxyl groups in the structure of modified methyl vinyl silicone rubber react with the carboxyl groups in the structure of bicyclo[2.2.2]octane-1,4-dicarboxylic acid, thereby chemically linking bicyclo[2.2.2]octane-1,4-dicarboxylic acid to the structure of methyl vinyl silicone rubber to obtain a high temperature resistant component.

[0042] 3. Preparation of plastic products

[0043] Step 1: Add 40g of polypropylene, 4g of flame retardant synergist, 3g of high temperature resistant component, 7g of talcum powder, 1g of polyethylene wax, 1g of sodium dodecylbenzene sulfonate and 1g of antioxidant 1010 into a mixer, raise the temperature to 80°C, stir and mix at a stirring rate of 400r / min for 30min to obtain a mixture;

[0044] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 160° C., the temperature of the second stage to 170° C., the temperature of the third stage to 180° C., and the temperature of the fourth stage to 190° C., and after the masterbatch is cooled, slicing the masterbatch to form pellets;

[0045] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product. Example 2

[0046] Preparation of plastic products

[0047] Step 1: Add 50g of polypropylene, 6g of flame retardant synergist, 5g of high temperature resistant component, 8g of talcum powder, 2g of polyethylene wax, 2g of sodium dodecylbenzene sulfonate and 1.5g of antioxidant 1010 into a mixer, raise the temperature to 90°C, stir and mix at a stirring rate of 500r / min for 40min to obtain a mixture;

[0048] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 165°C, the temperature of the second stage to 175°C, the temperature of the third stage to 185°C, and the temperature of the fourth stage to 195°C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0049] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0050] The preparation method of the flame retardant synergist and the high temperature resistant component is the same as that in Example 1. Example 3

[0051] Preparation of plastic products

[0052] Step 1: Add 60g of polypropylene, 8g of flame retardant synergist, 7g of high temperature resistant component, 9g of talcum powder, 3g of polyethylene wax, 3g of sodium dodecylbenzene sulfonate and 2g of antioxidant 1010 into a mixer, raise the temperature to 100°C, stir and mix at a stirring rate of 600r / min for 50min to obtain a mixture;

[0053] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 170° C., the temperature of the second stage to 180° C., the temperature of the third stage to 190° C., and the temperature of the fourth stage to 200° C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0054] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0055] The preparation method of the flame retardant synergist and the high temperature resistant component is the same as that in Example 1.

[0056] Comparative Example 1

[0057] Preparation of plastic products

[0058] Step 1: Add 50 g of polypropylene, 6 g of flame retardant synergist, 8 g of talc, 2 g of polyethylene wax, 2 g of sodium dodecylbenzene sulfonate and 1.5 g of antioxidant 1010 into a mixer, raise the temperature to 90° C., and stir and mix at a stirring rate of 500 r / min for 40 min to obtain a mixture;

[0059] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 165°C, the temperature of the second stage to 175°C, the temperature of the third stage to 185°C, and the temperature of the fourth stage to 195°C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0060] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0061] The preparation method of the flame retardant synergist is the same as that in Example 1.

[0062] Comparative Example 2

[0063] Preparation of plastic products

[0064] Step 1: Add 50g of polypropylene, 5g of high temperature resistant component, 8g of talcum powder, 2g of polyethylene wax, 2g of sodium dodecylbenzene sulfonate and 1.5g of antioxidant 1010 into a mixer, raise the temperature to 90°C, stir and mix at a stirring rate of 500r / min for 40min to obtain a mixture;

[0065] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 165°C, the temperature of the second stage to 175°C, the temperature of the third stage to 185°C, and the temperature of the fourth stage to 195°C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0066] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0067] The preparation method of the high temperature resistant component is the same as that in Example 1.

[0068] Comparative Example 3

[0069] Preparation of plastic products

[0070] Step 1: Add 50 g of polypropylene, 4 g of boehmite, 2 g of 5'-cytidylic acid, 5 g of high temperature resistant component, 8 g of talc, 2 g of polyethylene wax, 2 g of sodium dodecylbenzene sulfonate and 1.5 g of antioxidant 1010 into a mixer, raise the temperature to 90° C., stir and mix at a stirring rate of 500 r / min for 40 min to obtain a mixture;

[0071] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 165°C, the temperature of the second stage to 175°C, the temperature of the third stage to 185°C, and the temperature of the fourth stage to 195°C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0072] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0073] The preparation method of the high temperature resistant component is the same as that in Example 1.

[0074] Comparative Example 4

[0075] Preparation of plastic products

[0076] Step 1: Add 50 g of polypropylene, 8 g of talc, 2 g of polyethylene wax, 2 g of sodium dodecylbenzene sulfonate and 1.5 g of antioxidant 1010 into a mixer, raise the temperature to 90° C., and stir and mix at a stirring rate of 500 r / min for 40 min to obtain a mixture;

[0077] Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 165°C, the temperature of the second stage to 175°C, the temperature of the third stage to 185°C, and the temperature of the fourth stage to 195°C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets;

[0078] Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

[0079] Performance testing:

[0080] The plastic products prepared in Examples 1 to 3 of the present invention and Comparative Examples 1 to 4 were made into samples that met the specifications. The samples were subjected to a combustion performance test according to GB / T 2406.2-2009 "Determination of Combustion Behavior of Plastics by Oxygen Index Method Part 2: Room Temperature Test" to evaluate the flame retardant properties of the plastic products. The samples were subjected to a Vicat softening temperature test according to GB / T 1633-2000 "Determination of Vicat Softening Temperature (VST) of Thermoplastics" to evaluate the high temperature resistance of the plastic products. The specific test results are shown in Table 1:

[0081] Table 1 - Performance Test

[0082] ;

[0083] Analysis of the test data in Table 1 shows that the plastic products prepared in Examples 1 to 3 of the present invention have excellent flame retardant properties and high temperature resistance. The plastic product prepared in Comparative Example 1 only adds a flame retardant synergist, which has a certain flame retardant effect, but does not add a high temperature resistant component, and cannot exert the synergistic flame retardant effect of silicone and the flame retardant synergist. Compared with the examples, the value of the limiting oxygen index decreases slightly, and the Vicat softening temperature of the plastic product decreases significantly. The plastic product prepared in Comparative Example 2 does not add a flame retardant synergist, and can only use the high temperature resistant component for flame retardancy, so The flame retardant properties of the plastic product are greatly reduced; in the plastic product prepared in Comparative Example 3, boehmite, 5'-cytidylic acid and high temperature resistant components are added. Compared with the embodiment, the high temperature resistance of the plastic product is better, but the flame retardant performance is average. It is speculated that this may be because the boehmite is not organically modified, the boehmite particles interact with each other, and agglomeration occurs in the matrix, resulting in a decrease in the flame retardant properties of the plastic product; the plastic product prepared in Comparative Example 4 does not add flame retardant synergists and high temperature resistant components, so the flame retardant and high temperature resistant properties of the plastic product are the worst.

[0084] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A plastic product based on polypropylene, characterized in that The invention comprises the following raw materials in parts by weight: 40 to 60 parts of polypropylene, 4 to 8 parts of flame retardant synergist, 3 to 7 parts of high temperature resistant component, 7 to 9 parts of filler, 1 to 3 parts of lubricant, 1 to 3 parts of dispersant, and 1 to 2 parts of antioxidant; The preparation method of the flame retardant synergist comprises the following steps: Step D1: ultrasonically dispersing boehmite in an N-methylpyrrolidone solution, adding 4-bromobutyric acid and a catalyst under continuous nitrogen conditions, raising the system temperature to 100-110° C., stirring for 4-6 hours, allowing the material to cool naturally, centrifuging to separate solid material, washing the solid material, and vacuum drying to obtain modified boehmite; Step D2: Add modified boehmite and N,N-dimethylformamide solution into the reactor, perform ultrasound to form a uniform dispersion, then add 5'-cytidylic acid and an accelerator into the dispersion, raise the temperature to 70-80°C, keep stirring at this temperature for 4-8 hours, filter, collect the product, and dry to obtain a flame retardant synergist; The preparation method of the high temperature resistant component comprises the following steps: Step DD1: under nitrogen protection, adding methyl vinyl silicone rubber to a toluene solution, mechanically stirring, adding 2-mercaptoethanol and a photoinitiator, mixing, placing the system under ultraviolet light for reaction for 3 to 6 hours, and removing the solvent by rotary evaporation to obtain a modified methyl vinyl silicone rubber; Step DD2: Add modified methyl vinyl silicone rubber to the dimethyl sulfoxide solution and stir evenly. Under nitrogen protection, add bicyclo[2.2.2]octane-1,4-dicarboxylic acid and tetrabutyl titanate to the system. After the addition is completed, turn on the heating. After the system temperature reaches 100-110°C, stir at a constant temperature for 4-6 hours, stop heating and remove the nitrogen. After cooling to room temperature, discharge the material to obtain a high temperature resistant component.

2. A polypropylene-based plastic product according to claim 1, characterized in that: In step D1, the catalyst is any one of tetrabutyl titanate, tetraethyl titanate or tetraisopropyl titanate.

3. A polypropylene-based plastic product according to claim 1, characterized in that: In step D1, the mass ratio of boehmite to 4-bromobutyric acid is 1:0.1-0.

4.

4. A polypropylene-based plastic product according to claim 1, characterized in that: In step D2, the promoter is any one of sodium carbonate, potassium carbonate or sodium bicarbonate.

5. A polypropylene-based plastic product according to claim 1, characterized in that: In step DD1, the vinyl content in the methyl vinyl silicone rubber is 0.05 to 1.0 mol%.

6. A polypropylene-based plastic product according to claim 1, characterized in that: In step DD1, the photoinitiator is any one of benzoin ethyl ether, benzoin isopropyl ether or benzoin dimethyl ether.

7. A polypropylene-based plastic product according to claim 1, characterized in that: The filler is either titanium dioxide or talcum powder; the lubricant is either paraffin wax or polyethylene wax; the dispersant is either sodium dodecylbenzene sulfonate or polyethylene glycol; the antioxidant is either antioxidant 1010 or antioxidant 2246.

8. A method for producing a polypropylene-based plastic product as claimed in claim 1, characterized in that: The following steps are involved: Step 1: Add polypropylene, flame retardant synergist, high temperature resistant component, filler, lubricant, dispersant and antioxidant into a mixer, raise the temperature to 80-100° C., stir and mix at a stirring rate of 400-600 r / min for 30-50 minutes to obtain a mixture; Step 2: placing the mixed material obtained in step 1 in a twin-screw extruder for extrusion granulation, setting the temperature of the first stage of the extruder to 160-170° C., the temperature of the second stage to 170-180° C., the temperature of the third stage to 180-190° C., and the temperature of the fourth stage to 190-200° C. After the masterbatch is cooled, the masterbatch is sliced ​​to form pellets; Step 3: Add the pellets obtained in step 2 into an injection molding machine and perform one-step molding by hot pressing to obtain a plastic product.

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