High-manufacturability plastic for extension socket track and preparation method of high-manufacturability plastic

Abstract

The invention relates to high-manufacturability plastic for an extension socket track and a preparation method of the high-manufacturability plastic, and belongs to the technical field of plastic. The preparation method comprises the following steps: creatively adding 2, 4, 6-triaminopyrimidine and phytic acid into deionized water to form a reaction system, carrying out a hydrothermal reaction, reacting amino of 2, 4, 6-triaminopyrimidine with phosphorus hydroxyl of phytic acid to obtain an N-P composite product, adding a certain amount of diphenyl chlorophosphate, and carrying out a hydrothermal reaction to obtain the 2, 4, 6-triaminopyrimidine / phytic acid composite material. The preparation method comprises the following steps: mixing a first flame retardant with 3-benzenesulfonyl potassium benzenesulfonate, polyvinyl butyral and polycarbonate according to a certain mass ratio, and carrying out extrusion granulation to obtain the plastic, so as to realize deacidification substitution of residual amino groups and phosphorus-chlorine bonds, thereby preparing a second flame retardant, and mixing the second flame retardant with the first flame retardant / 3-benzenesulfonyl potassium benzenesulfonate, polyvinyl butyral and polycarbonate according to a certain mass ratio. Compared with the prior art, the flame retardant polycarbonate has the advantages of low viscosity during melting, good fluidity, easy processing, strong manufacturability, excellent flame retardant effect, no adverse effect on the mechanical properties of polycarbonate, and suitableness for application in the field of extension socket tracks.

Description

Technical Field

[0001] The invention belongs to the technical field of plastics, and in particular relates to a high-tech plastic for a plug-in rail and a preparation method thereof. Background Art

[0002] As a new type of power supply, the power strip track is popular among people for its many advantages such as easy use, high mobility and strong expandability. Among them, the power strip track is mainly composed of a shell, a conductive track and other parts. At present, the materials used to prepare the shell are mostly polycarbonate, namely PC plastic, which has high mechanical strength and good high temperature resistance. It can be used for a long time in daily environment without being damaged. However, the existing PC plastic still has certain disadvantages that limit its application in the shell. This is because on the one hand, the melt viscosity of PC plastic is relatively high and the processing fluidity is poor, which will cause certain difficulties for subsequent extrusion, injection molding and other processes, making it difficult to control the precision. On the other hand, without adding any flame retardant, the flame retardant grade of PC plastic can only reach UL-94V-2. In order to give it a better flame retardant effect, many existing technologies will add additional flame retardants to PC plastics. However, the addition of these flame retardants often sacrifices some mechanical properties, which seriously affects the subsequent use and reduces the practicality. Summary of the invention

[0003] In view of the problems existing in the prior art, the purpose of the present invention is to provide a high-tech plastic for plug-in rails and a preparation method thereof. The present invention creatively adds 2,4,6-triaminopyrimidine and phytic acid to deionized water to form a reaction system for hydrothermal reaction, and obtains an NP composite product through the action of the amino group of 2,4,6-triaminopyrimidine and the phosphorus hydroxyl group of phytic acid. Then, a certain amount of diphenyl chlorophosphate is added to achieve deacidification substitution of the remaining amino group and phosphorus-chlorine bond, thereby preparing a second flame retardant, which is mixed with the first flame retardant / potassium 3-phenylsulfonylbenzenesulfonate, polyvinyl butyral and polycarbonate in a certain mass ratio, and extruded and granulated to obtain a plastic. The plastic not only has relatively low viscosity when melted, good fluidity, easy processing and strong processability, but also has excellent flame retardant effect, will not adversely affect the mechanical properties of polycarbonate itself, and is very suitable for application in the field of plug-in rails.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A high-tech plastic for a plug-in rail, comprising the following components by weight percentage: 0.6% of a compound flame retardant, 7-8% of polyvinyl butyral and the remainder of polycarbonate; the compound flame retardant comprises a first flame retardant and a second flame retardant; the first flame retardant is potassium 3-phenylsulfonylbenzenesulfonate.

[0006] As a preferred technical solution of the present invention, the mass ratio of the first flame retardant to the second flame retardant is 2:6-8.

[0007] As a preferred technical solution of the present invention, the second flame retardant is prepared by the following steps:

[0008] Step A: adding 2,4,6-triaminopyrimidine and phytic acid into deionized water, and then stirring and mixing at room temperature to obtain component A;

[0009] Step B: subjecting the component A to a hydrothermal reaction, naturally cooling to room temperature, filtering, taking the filter residue, washing with deionized water, and finally drying to obtain component B;

[0010] Step C: adding 30-35 parts by weight of dimethyl sulfoxide, 3-4 parts by weight of component B and 0.1-0.2 parts by weight of 4-dimethylaminopyridine to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 10-15 minutes to obtain component C;

[0011] Step D: adding 8-9 parts by weight of diphenyl chlorophosphate to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 20-30 minutes to obtain component D;

[0012] Step E: Add the component D dropwise to the component C at 0-5°C while stirring. After the addition is completed, continue stirring at a constant temperature for 1-2 hours. During the whole process, N,N-diisopropylethylamine is added to maintain the pH at 8.5-9. After impurities are removed, the preparation is completed.

[0013] Furthermore, in step A, the mass ratio of the deionized water to the 2,4,6-triaminopyrimidine is 100:5-7; and the molar ratio of the 2,4,6-triaminopyrimidine to the phytic acid is 8-9:1.

[0014] Furthermore, the stirring time in step A is 15-30 min.

[0015] Furthermore, the hydrothermal reaction in step B refers to heating the reactor to 120-130° C. at a heating rate of 3-5° C. / min and then keeping the temperature for 48-50 hours.

[0016] Furthermore, the drying in step B refers to vacuum drying at 60-70° C. until constant weight is achieved.

[0017] Furthermore, the dripping rate in step E is controlled at 1-2 drops / s.

[0018] Furthermore, the impurity removal in step E refers to distillation at 35-40° C. under a vacuum degree of -0.09 MPa until the volatiles are completely removed, and then 100-150 parts by weight of deionized water and 8-10 parts by weight of anhydrous ethanol are added, followed by stirring for 15-30 minutes at room temperature, standing for 5-10 minutes, filtering, removing the filtrate, washing with deionized water, and finally vacuum drying at 50-60° C. until constant weight.

[0019] As a preferred technical solution of the present invention, the polycarbonate is bisphenol A polycarbonate.

[0020] A method for preparing a high-tech plastic for a plug-in rail, the method comprising the following steps:

[0021] (1) The compound flame retardant, polyvinyl butyral and polycarbonate are mixed, and then extruded and granulated by a twin-screw extruder to complete the preparation.

[0022] Furthermore, the operating parameters of the twin-screw extruder in step (1) are as follows: the temperature of zone 1 is controlled at 230°C, the temperature of zone 2 is controlled at 230°C, the temperature of zone 3 is controlled at 235°C, the temperature of zone 4 is controlled at 240°C, the temperature of zone 5 is controlled at 245°C, the temperature of zone 6 is controlled at 245°C, the temperature of zone 7 is controlled at 240°C, the temperature of zone 8 is controlled at 235°C, the temperature of zone 9 is controlled at 230°C, and the screw speed is controlled at 300-500rpm.

[0023] Beneficial effects of the present invention:

[0024] (1) The present invention creatively adds 2,4,6-triaminopyrimidine and phytic acid to deionized water to form a reaction system for hydrothermal reaction, and obtains NP composite product through the action of amino group of 2,4,6-triaminopyrimidine and phosphorus hydroxyl group of phytic acid, and then adds a certain amount of diphenyl chlorophosphate to achieve deacidification substitution of the remaining amino group and phosphorus chlorine bond, thereby preparing a second flame retardant, which is mixed with the first flame retardant / potassium 3-phenylsulfonylbenzenesulfonate, polyvinyl butyral and polycarbonate in a certain mass ratio, and extruded and granulated to obtain a plastic, which not only has relatively low viscosity when melted, good fluidity, easy processing and strong processability, but also has excellent flame retardant effect, will not adversely affect the mechanical properties of polycarbonate itself, and is very suitable for application in the field of plug-in rails.

[0025] (2) The present invention creatively adds a certain amount of the first flame retardant / potassium 3-phenylsulfonylbenzenesulfonate, the second flame retardant and polyvinyl butyral to polycarbonate, thereby giving it better processing performance and flame retardant effect without adversely affecting its own mechanical properties; polyvinyl butyral is a polyhydroxy polymer with good flexibility and excellent mechanical properties. Its introduction can form a large number of hydrogen bonds with the carbonate group of polycarbonate, and can achieve good compatibility without adding a compatibilizer, effectively reducing the viscosity during melting, having high processability and facilitating the control of dimensional accuracy; potassium 3-phenylsulfonylbenzenesulfonate is a sulfonate flame retardant widely used in polycarbonate. However, for polycarbonate products with a thickness of less than 2.5 mm, its flame retardant ability is very limited. Based on this, the present invention creatively prepares a halogen-free second flame retardant with good carbonization ability and NP element composite by hydrothermal reaction of 2,4,6-triaminopyrimidine / phytic acid-deacidification substitution of diphenyl chlorophosphate, so that after compounding with the first flame retardant, only a small amount of addition is needed to give polycarbonate an excellent flame retardant effect. At the same time, after the deacidification substitution of diphenyl chlorophosphate, more benzene ring structures are formed, thereby ensuring its compatibility with polycarbonate to a certain extent, and ultimately will not have an adverse effect on the mechanical properties of polycarbonate.

[0026] (3) The plastic prepared by the present invention has high processability and good flame retardant effect. In actual use, it can be injection molded or extruded according to conventional PC plastic, which is very convenient. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0028] The bisphenol A polycarbonate in all the embodiments and comparative examples of the present invention was purchased directly from Lotte Chemical with a brand name of PC-1100; the polyvinyl butyral was purchased directly from Shandong Kepler Biotechnology Co., Ltd. with a model number of kpl-56665.

[0029] Example 1

[0030] A high-tech plastic for a plug-in rail, comprising the following components by weight percentage: 0.6% of a compound flame retardant, 7% of polyvinyl butyral and 92.4% of polycarbonate; the compound flame retardant comprises a first flame retardant and a second flame retardant; the first flame retardant is potassium 3-phenylsulfonylbenzenesulfonate.

[0031] The mass ratio of the first flame retardant to the second flame retardant is 2:6.

[0032] The second flame retardant is prepared by the following steps:

[0033] Step A: adding 2,4,6-triaminopyrimidine and phytic acid into deionized water, and then stirring and mixing at room temperature to obtain component A;

[0034] Step B: subjecting the component A to a hydrothermal reaction, naturally cooling to room temperature, filtering, taking the filter residue, washing with deionized water, and finally drying to obtain component B;

[0035] Step C: adding 30 parts by weight of dimethyl sulfoxide, 3 parts by weight of component B and 0.1 parts by weight of 4-dimethylaminopyridine to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 10 minutes to obtain component C;

[0036] Step D: adding 8 parts by weight of diphenyl chlorophosphate to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 20 minutes to obtain component D;

[0037] Step E: Add component D dropwise to component C at 0°C while stirring. After the addition is completed, continue stirring at a constant temperature for 1 hour. During the whole process, N,N-diisopropylethylamine is added to maintain the pH at 8.5. After impurities are removed, the preparation is completed.

[0038] In step A, the mass ratio of the deionized water to the 2,4,6-triaminopyrimidine is 100:5; the molar ratio of the 2,4,6-triaminopyrimidine to the phytic acid is 8:1.

[0039] The stirring time in step A is 15 min.

[0040] The hydrothermal reaction in step B is to heat the reactor to 120° C. at a heating rate of 3° C. / min and then keep the temperature for 48 hours.

[0041] The drying in step B refers to vacuum drying at 60° C. until constant weight.

[0042] The dripping rate in step E is controlled at 1 drop / s.

[0043] The impurity removal in step E refers to distillation at 35° C. under a vacuum degree of -0.09 MPa until the volatiles are completely removed, and then 100 parts by weight of deionized water and 8 parts by weight of anhydrous ethanol are added, followed by stirring and mixing at room temperature for 15 minutes, standing for 5 minutes, filtering, removing the filtrate, washing with deionized water, and finally vacuum drying at 50° C. until constant weight.

[0044] The polycarbonate is bisphenol A type polycarbonate.

[0045] A method for preparing a high-tech plastic for a plug-in rail, the method comprising the following steps:

[0046] (1) The compound flame retardant, polyvinyl butyral and polycarbonate are mixed, and then extruded and granulated by a twin-screw extruder to complete the preparation.

[0047] The operating parameters of the twin-screw extruder in step (1) are as follows: the temperature of zone 1 is controlled at 230°C, the temperature of zone 2 is controlled at 230°C, the temperature of zone 3 is controlled at 235°C, the temperature of zone 4 is controlled at 240°C, the temperature of zone 5 is controlled at 245°C, the temperature of zone 6 is controlled at 245°C, the temperature of zone 7 is controlled at 240°C, the temperature of zone 8 is controlled at 235°C, the temperature of zone 9 is controlled at 230°C, and the screw speed is controlled at 300rpm.

[0048] Example 2

[0049] A high-tech plastic for a plug-in rail, comprising the following components by weight percentage: 0.6% of a compound flame retardant, 8% of polyvinyl butyral and 91.4% of polycarbonate; the compound flame retardant comprises a first flame retardant and a second flame retardant; the first flame retardant is potassium 3-phenylsulfonylbenzenesulfonate.

[0050] The mass ratio of the first flame retardant to the second flame retardant is 2:8.

[0051] The second flame retardant is prepared by the following steps:

[0052] Step A: adding 2,4,6-triaminopyrimidine and phytic acid into deionized water, and then stirring and mixing at room temperature to obtain component A;

[0053] Step B: subjecting the component A to a hydrothermal reaction, naturally cooling to room temperature, filtering, taking the filter residue, washing with deionized water, and finally drying to obtain component B;

[0054] Step C: adding 35 parts by weight of dimethyl sulfoxide, 4 parts by weight of component B and 0.2 parts by weight of 4-dimethylaminopyridine to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 15 minutes to obtain component C;

[0055] Step D: adding 9 parts by weight of diphenyl chlorophosphate to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 30 minutes to obtain component D;

[0056] Step E: Add component D dropwise to component C at 5°C while stirring. Continue stirring at a constant temperature for 2 hours after the addition is completed. During the whole process, N,N-diisopropylethylamine is added to maintain the pH at 9. After impurities are removed, the preparation is completed.

[0057] In step A, the mass ratio of the deionized water to the 2,4,6-triaminopyrimidine is 100:7; and the molar ratio of the 2,4,6-triaminopyrimidine to the phytic acid is 9:1.

[0058] The stirring time in step A is 30 min.

[0059] The hydrothermal reaction in step B is to heat the reactor to 130° C. at a heating rate of 5° C. / min and then keep the temperature for 50 hours.

[0060] The drying in step B refers to vacuum drying at 70° C. until constant weight.

[0061] The rate of the dripping in step E is controlled at 2 drops / s.

[0062] The impurity removal in step E refers to distillation at 40° C. under a vacuum degree of -0.09 MPa until the volatiles are completely removed, and then 150 parts by weight of deionized water and 10 parts by weight of anhydrous ethanol are added, followed by stirring and mixing at room temperature for 30 minutes, standing for 10 minutes, filtering, removing the filtrate, washing with deionized water, and finally vacuum drying at 60° C. until constant weight.

[0063] The polycarbonate is bisphenol A type polycarbonate.

[0064] A method for preparing a high-tech plastic for a plug-in rail, the method comprising the following steps:

[0065] (1) The compound flame retardant, polyvinyl butyral and polycarbonate are mixed, and then extruded and granulated by a twin-screw extruder to complete the preparation.

[0066] The operating parameters of the twin-screw extruder in step (1) are as follows: the temperature of zone 1 is controlled at 230°C, the temperature of zone 2 is controlled at 230°C, the temperature of zone 3 is controlled at 235°C, the temperature of zone 4 is controlled at 240°C, the temperature of zone 5 is controlled at 245°C, the temperature of zone 6 is controlled at 245°C, the temperature of zone 7 is controlled at 240°C, the temperature of zone 8 is controlled at 235°C, the temperature of zone 9 is controlled at 230°C, and the screw speed is controlled at 500rpm.

[0067] Example 3

[0068] A high-tech plastic for a plug-in rail, comprising the following components by weight percentage: 0.6% of a compound flame retardant, 7.5% of polyvinyl butyral and 91.9% of polycarbonate; the compound flame retardant comprises a first flame retardant and a second flame retardant; the first flame retardant is potassium 3-phenylsulfonylbenzenesulfonate.

[0069] The mass ratio of the first flame retardant to the second flame retardant is 2:7.

[0070] The second flame retardant is prepared by the following steps:

[0071] Step A: adding 2,4,6-triaminopyrimidine and phytic acid into deionized water, and then stirring and mixing at room temperature to obtain component A;

[0072] Step B: subjecting the component A to a hydrothermal reaction, naturally cooling to room temperature, filtering, taking the filter residue, washing with deionized water, and finally drying to obtain component B;

[0073] Step C: adding 33 parts by weight of dimethyl sulfoxide, 3.5 parts by weight of component B and 0.15 parts by weight of 4-dimethylaminopyridine to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 13 minutes to obtain component C;

[0074] Step D: adding 8.5 parts by weight of diphenyl chlorophosphate to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 25 minutes to obtain component D;

[0075] Step E: Add component D dropwise to component C at 3°C ​​while stirring. After the addition is completed, continue stirring at a constant temperature for 1.5 hours. During the whole process, N,N-diisopropylethylamine is added to maintain the pH at 8.7. After impurities are removed, the preparation is completed.

[0076] In step A, the mass ratio of the deionized water to the 2,4,6-triaminopyrimidine is 100:6; the molar ratio of the 2,4,6-triaminopyrimidine to the phytic acid is 8.5:1.

[0077] The stirring time in step A is 20 min.

[0078] The hydrothermal reaction in step B refers to heating the reactor to 125° C. at a heating rate of 4° C. / min and then keeping the temperature for 49 hours.

[0079] The drying in step B refers to vacuum drying at 65° C. until constant weight.

[0080] The dripping rate in step E is controlled at 1.5 drops / s.

[0081] The impurity removal in step E refers to distillation at 38° C. under a vacuum degree of -0.09 MPa until the volatiles are completely removed, and then 130 parts by weight of deionized water and 9 parts by weight of anhydrous ethanol are added, followed by stirring and mixing at room temperature for 25 minutes, standing for 8 minutes, filtering, removing the filtrate, washing with deionized water, and finally vacuum drying at 55° C. until constant weight.

[0082] The polycarbonate is bisphenol A type polycarbonate.

[0083] A method for preparing a high-tech plastic for a plug-in rail, the method comprising the following steps:

[0084] (1) The compound flame retardant, polyvinyl butyral and polycarbonate are mixed, and then extruded and granulated by a twin-screw extruder to complete the preparation.

[0085] The operating parameters of the twin-screw extruder in step (1) are as follows: the temperature of zone 1 is controlled at 230°C, the temperature of zone 2 is controlled at 230°C, the temperature of zone 3 is controlled at 235°C, the temperature of zone 4 is controlled at 240°C, the temperature of zone 5 is controlled at 245°C, the temperature of zone 6 is controlled at 245°C, the temperature of zone 7 is controlled at 240°C, the temperature of zone 8 is controlled at 235°C, the temperature of zone 9 is controlled at 230°C, and the screw speed is controlled at 400rpm.

[0086] Comparative Example 1

[0087] Based on Example 1, polyvinyl butyral was replaced by polycarbonate of equal weight, and the rest remained unchanged.

[0088] Comparative Example 2

[0089] On the basis of Example 1, the first flame retardant was replaced by the second flame retardant of equal weight, and the rest remained unchanged.

[0090] Comparative Example 3

[0091] On the basis of Example 1, the second flame retardant was replaced by the first flame retardant of equal weight, and the rest remained unchanged.

[0092] Comparative Example 4

[0093] On the basis of Example 1, step C, step D and step E are not performed, and the rest remain unchanged.

[0094] Comparative Example 5

[0095] On the basis of Example 1, the compound flame retardant and polyvinyl butyral were both replaced with polycarbonate of equal weight, and the rest remained unchanged.

[0096] Test Example 1

[0097] MFR Test:

[0098] The high-technological plastics prepared in Examples 1-3 and Comparative Examples 1-5 were subjected to MFR tests according to the standard GB / T3682-2000.

[0099] Table 1. MFR test results

[0100] MFR / g / 10min Example 1 6.98 Example 2 6.53 Example 3 6.62 Comparative Example 1 4.31 Comparative Example 2 6.95 Comparative Example 3 6.92 Comparative Example 4 6.97 Comparative Example 5 4.34

[0101] Test Example 2

[0102] Flame retardant performance test:

[0103] The high-tech plastics prepared in Examples 1-3 and Comparative Examples 1-5 were respectively injection molded using an injection molding machine to obtain various test samples, which were then subjected to a UL-94 vertical combustion test. The injection molding temperature of the injection molding machine was 250°C, and the size of the test samples was 130mm×13mm×2mm.

[0104] Table 2. Flame retardant performance test results

[0105] grade Example 1 V-0 Example 2 V-0 Example 3 V-0 Comparative Example 1 V-0 Comparative Example 2 V-1 Comparative Example 3 V-1 Comparative Example 4 V-1 Comparative Example 5 V-2

[0106] Test Example 3

[0107] Mechanical properties test:

[0108] The high-tech plastics prepared in Examples 1-3 and Comparative Examples 1-5 were respectively injection molded using an injection molding machine to obtain various test samples, and then mechanical properties were tested using an electronic universal testing machine to obtain tensile strength and elongation at break. The injection molding temperature of the injection molding machine was 250°C, the tensile speed during the test was 5 mm / min, and the size of the test samples was 50 mm×5 mm×0.5 mm.

[0109] Table 3. Mechanical properties test results

[0110]

[0111]

[0112] From the comparison of Test Examples 1-3 and Example 1 and Comparative Examples 1-5, it can be seen that the high-tech plastic prepared by the present invention not only has good processing performance, but also has excellent flame retardant effect. At the same time, its mechanical properties are basically not changed much compared with pure PC plastic, and no adverse effects will be produced.

[0113] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-tech plastic for a plug-in rail, characterized by: The high-tech plastic is calculated by weight percentage Includes the following components: 0.6% of a compound flame retardant, 7-8% of polyvinyl butyral and the balance of polycarbonate; the compound flame retardant comprises a first flame retardant and a second flame retardant; the first flame retardant is potassium 3-phenylsulfonylbenzenesulfonate.

2. The high-tech plastic for the plug-in rail according to claim 1, characterized in that: The mass ratio of the first flame retardant to the second flame retardant is 2:6-8.

3. The high-tech plastic for plug-in rail according to claim 1, characterized in that: The second flame retardant is prepared by the following steps: Step A: adding 2,4,6-triaminopyrimidine and phytic acid into deionized water, and then stirring and mixing at room temperature to obtain component A; Step B: subjecting the component A to a hydrothermal reaction, naturally cooling to room temperature, filtering, taking the filter residue, washing with deionized water, and finally drying to obtain component B; Step C: adding 30-35 parts by weight of dimethyl sulfoxide, 3-4 parts by weight of component B and 0.1-0.2 parts by weight of 4-dimethylaminopyridine to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 10-15 minutes to obtain component C; Step D: adding 8-9 parts by weight of diphenyl chlorophosphate to 100 parts by weight of acetonitrile, and then stirring and mixing at room temperature for 20-30 minutes to obtain component D; Step E: Add the component D dropwise to the component C at 0-5°C while stirring. After the addition is completed, continue stirring at a constant temperature for 1-2 hours. During the whole process, N,N-diisopropylethylamine is added to maintain the pH at 8.5-9. After impurities are removed, the preparation is completed.

4. The high-tech plastic for the plug-in rail according to claim 3, characterized in that: In step A, the mass ratio of the deionized water to the 2,4,6-triaminopyrimidine is 100:5-7; the molar ratio of the 2,4,6-triaminopyrimidine to the phytic acid is 8-9:

1.

5. The high-tech plastic for the plug-in rail according to claim 3, characterized in that: The hydrothermal reaction in step B is to use a reactor to heat up to 120-130°C at a heating rate of 3-5°C / min and then keep the temperature for 48-50h.

6. The high-tech plastic for plug-in rail according to claim 3, characterized in that: The drying in step B refers to vacuum drying at 60-70° C. until constant weight.

7. The high-tech plastic for the plug-in rail according to claim 3, characterized in that: The dripping rate in step E is controlled at 1-2 drops / s.

8. The high-tech plastic for the plug-in rail according to claim 3, characterized in that: The impurity removal in step E refers to distilling at 35-40° C. under a vacuum degree of -0.09 MPa until the volatiles are completely removed, then adding 100-150 parts by weight of deionized water and 8-10 parts by weight of anhydrous ethanol, then stirring and mixing at room temperature for 15-30 minutes, standing for 5-10 minutes, filtering, removing the filtrate, washing with deionized water, and finally vacuum drying at 50-60° C. until constant weight.

9. The high-tech plastic for plug-in rail according to claim 1, characterized in that: The polycarbonate is bisphenol A type polycarbonate.

10. A method for preparing a high-tech plastic for a plug-in rail according to any one of claims 1 to 9, characterized in that: The preparation method comprises the following steps: (1) The compound flame retardant, polyvinyl butyral and polycarbonate are mixed, and then extruded and granulated by a twin-screw extruder to complete the preparation.

Images