A high-efficiency anti-dripping agent composition and preparation method thereof

Abstract

The present invention relates to the field of anti-drip agents, and more specifically, to a high-efficiency anti-drip agent composition and a preparation method thereof. This method utilizes an emulsion polymerization process to prepare multilayer core-shell latex particles comprising a PTFE core, a zinc-doped multi-walled carbon nanotube outer core, and a conventional polymer shell. The two incompatible systems of PTFE, zinc-doped multi-walled carbon nanotubes, and shell polymer are uniformly mixed at a microscale, resulting in a novel and highly efficient PTFE surface modification method that imparts the surface polarity, hydrophilicity, and adhesion characteristics of conventional polymers to PTFE and nanomaterials. By doping with inexpensive, treated zinc-doped multi-walled carbon nanotubes, the amount of anti-drip agent added during plastic processing can be reduced from 0.5% to 0.3%, while the product exhibits superior anti-drip and flame-retardant properties compared to currently available conventional anti-drip agent products.

Description

Technical Field

[0001] The present invention relates to the field of anti-dripping agents, in particular to a high-efficiency anti-dripping agent composition and a preparation method thereof. Background Art

[0002] As polymer materials are increasingly used in our daily lives, we must pay attention to their performance. Polymer materials offer numerous advantages, such as high strength and low density, which provide them with unique advantages in many fields. However, they also have some significant drawbacks. Their combustion performance is less than ideal, some materials are flammable, and some are prone to melt droplets during combustion, causing the fire to migrate, posing a significant risk to production and daily life. Therefore, research is needed to improve these shortcomings while minimizing or minimizing the impact on the material's original mechanical properties.

[0003] CN202210453769.3: The present invention relates to the technical field of anti-dripping agents, and specifically to a nano anti-dripping agent and a preparation method thereof. The present invention first coats a layer of polyacrylate on the surface of nano-silica through free radical-initiated polymerization, so that the surface of nano-silica can be organic, which is conducive to further polymerization reaction between nano-silica and polytetrafluoroethylene; then the present invention mixes and disperses the modified nano-silica emulsion and the polytetrafluoroethylene emulsion, aiming to enable the modified nano-silica colloids with smaller particle size to be dispersed between the polytetrafluoroethylene colloids, thereby forming an interpenetrating network cross-linked structure through free radical-initiated polymerization reaction. The formed composite colloids can both coat polytetrafluoroethylene to a large extent and improve the compatibility of polytetrafluoroethylene, and can also coat the modified nano-silica colloids, thereby forming a composite toughening agent structure with nano-silica rigid body as the core and polyacrylate as the shell, which can significantly improve the mechanical properties of the polymer.

[0004] CN202210114173.0: The present invention discloses an anti-drip agent, a preparation method, and an application thereof, belonging to the technical field of thermoplastic resin products. The anti-drip agent provided by the present invention contains a polyoxyethylene ether surfactant in an amount not exceeding 3100 ppm. When the anti-drip agent is used to prepare thermoplastic resin products, no or substantially no polyoxyethylene ether surfactant, which is prone to decomposition, is introduced into the thermoplastic resin products, thereby ensuring that the resulting thermoplastic resin products have good appearance and surface quality.

[0005] CN202110747373.5: The present invention relates to the field of ink preparation. The present invention provides a method for preparing an environmentally friendly silane flame retardant and anti-dripping agent. Allyl polysiloxane and an emulsifier are added to pure water, mixed with polytetrafluoroethylene emulsion under high-speed shear stirring, and then polymerized with an initiator to obtain the obtained product. The present invention introduces bisphenol A and aromatic groups such as phenyl, so that it has a better carbon-forming effect and a better flame retardant effect. After mixing the polysiloxane with polytetrafluoroethylene emulsion, it is copolymerized with an allyl monomer to form a coating structure on polytetrafluoroethylene, so that the material has both flame retardant properties and anti-dripping agent properties. The preparation method of the present invention has simple steps, is easy to operate, and has the prospect of industrial production.

[0006] Existing disclosed technical solutions mainly introduce new monomers for emulsion copolymerization to first prepare a pre-emulsion, and then further emulsion polymerization. The types of monomers and various reactants used in the preparation of the pre-emulsion are relatively large. However, the coating efficiency of the anti-drip agent obtained by simply mixing the prepared polymer emulsion with the PTFE emulsion is difficult to guarantee and will be relatively low. Moreover, the key to preparing this type of PTFE anti-drip agent is to ensure that the particle size of the obtained particles is small and can be evenly dispersed. Summary of the Invention

[0007] In response to one or more problems existing in the prior art, the present invention provides a high-efficiency anti-dripping agent composition and a preparation method thereof, which improves the droplet performance of the material.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] S1: Weigh 80-100 parts of polytetrafluoroethylene emulsion, 10-15 parts of pre-emulsion, and 2-6 parts of zinc-doped multi-walled carbon nanotubes according to their mass, add them into a reactor, and stir to mix evenly;

[0010] S2: Then add 2-5 parts of the initiator dropwise into the reactor, add 45-65 parts of the pre-emulsion dropwise within 2 hours, and heat to react;

[0011] S3: After the addition is complete, continue adding 1-3 parts of initiator and continue the reaction for 2-4 hours;

[0012] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0013] S5: slowly adding the anti-dripping agent emulsion into a dilute hydrochloric acid solution with a mass concentration of 10-20%, heating it to 80-95° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0014] In some embodiments, the initiator is azobisisobutylamidine hydrochloride.

[0015] In some embodiments, the reaction temperature is 70-95°C.

[0016] In some embodiments, the stirring rate is 100-200 r / min.

[0017] In some embodiments, the method for preparing the pre-emulsion is:

[0018] Weigh 3-7 parts of emulsifier, 3-7 parts of sodium lauryl sulfate, 28-40 parts of styrene, 6-12 parts of acrylonitrile, 1-3 parts of kaolin, and 35-60 parts of distilled water according to mass, add them into a reactor, stir, and fully emulsify to obtain a pre-emulsion.

[0019] In some embodiments, the emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0020] In some embodiments, the stirring time is 30-60 min.

[0021] In some embodiments, the method for preparing zinc-doped multi-walled carbon nanotubes is:

[0022] According to the weight ratio, 50-86 parts of hydroxylated multi-walled carbon nanotubes are added to 150-275 parts of organic solvent, and ultrasonically dispersed at 35-45° C. for 20-30 minutes. Then, 0.8-2.5 parts of allyldimethoxysilane are dissolved in 10-30 parts of organic solvent, and the mixture is slowly added to a reactor, and the addition is completed over 10-40 minutes. Then, the mixture is stirred at 20-40° C. for 0.5-2 hours, and then 10-15 parts of polymerizable organic zinc and 0.02-0.2 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum are added. The mixture is stirred at 65-75° C. for 1-3 hours to mix evenly, and then filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0023] In some embodiments, the polymerizable organic zinc is selected from the group consisting of allyl zinc bromide, zinc dimethacrylate, and 4-pentenyl zinc bromide.

[0024] In some embodiments, the organic solvent is anhydrous ethanol or isopropyl alcohol.

[0025] The invention uses hydroxylated multi-walled carbon nanotubes modified by silane to obtain allyl multi-walled carbon nanotubes, and then undergoes a hydrosilylation reaction with polymerizable organic zinc to obtain modified multi-walled carbon nanotubes that can improve the anti-drip effect of the anti-drip agent.

[0026] The benefits of the present invention lie in: a high-efficiency anti-dripping agent composition and a preparation method thereof are disclosed. The high-efficiency anti-dripping agent composition prepared by the present invention is added to a sample prepared during a plastic processing process, and the test results of mechanical properties such as tensile strength and bending and combustion performance are conducted. The results show that compared with ABS plastic, the tensile strength and bending performance are not significantly affected; however, the addition of the anti-dripping agent greatly improves the dripping performance of the material. The anti-dripping agent synthesized by the present invention has a good anti-dripping effect. DETAILED DESCRIPTION

[0027] The following examples are only used to illustrate the technical solution of the present invention more clearly, and are not intended to limit the scope of protection of the present invention.

[0028] Performance testing method:

[0029] 1. Tensile performance analysis

[0030] The tensile properties of the prepared tensile specimens were tested using an American instron 5966 high and low temperature double-column testing machine in accordance with the GB / T1040-92 standard. The tensile speed was 50 mm / min and the specimen was stretched until it broke. The tensile strength, elongation at break and breaking strength of the specimen were measured.

[0031] 2. Bending performance analysis

[0032] The bending performance of the prepared bending specimens was tested using an American instron5966 ​​high and low temperature double-column testing machine in accordance with the GB / T9341-2000 standard. During the test, the gauge length was set to 6 mm, the mold lowering speed was 2 mm / min, and the specimen was allowed to undergo a bending deformation of 16 mm to test the bending strength and bending modulus of the specimen.

[0033] 3. Vertical combustion performance analysis

[0034] Using a CZF-3 horizontal vertical combustion apparatus, according to UL-94 (Underwriters Laboratories Bulletin 94), the specimen is clamped vertically with a fixture and ignited for 10 seconds. The specimen's self-extinguishing time after the ignition is removed is observed. Dripping performance is determined by observing whether the specimen drips after combustion, the time it takes for dripping to occur, and whether the dripping ignites cotton placed below the apparatus. Our sampling was primarily intended to observe the impact of the synthesized product on the specimen's dripping performance, so flame retardancy was not a primary test metric.

[0035] Example 1

[0036] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0037] S1: Weigh 80g of polytetrafluoroethylene emulsion, 10g of pre-emulsion, and 2g of zinc-doped multi-walled carbon nanotubes, add them into the reactor, and stir to mix evenly;

[0038] S2: Then add 2g of initiator dropwise into the reactor, add 45g of pre-emulsion dropwise within 2h, and heat to react;

[0039] S3: After the addition is complete, 1 g of initiator is added and the reaction is continued for 2 h;

[0040] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0041] S5: slowly adding the anti-dripping agent emulsion into a 10% mass concentration dilute hydrochloric acid solution, heating to 80° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0042] The initiator is azobisisobutylamidine hydrochloride.

[0043] The reaction temperature is 70°C.

[0044] The stirring rate is 100 r / min.

[0045] The preparation method of the pre-emulsion is as follows:

[0046] 3 g of emulsifier, 3 g of sodium lauryl sulfate, 28 g of styrene, 6 g of acrylonitrile, 1 g of kaolin, and 35 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0047] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0048] The stirring time is 30 minutes.

[0049] The method for preparing zinc-doped multi-walled carbon nanotubes is as follows:

[0050] 50 g of hydroxylated multi-walled carbon nanotubes were added to 150 g of an organic solvent and ultrasonically dispersed at 35° C. for 20 min. 0.8 g of allyldimethoxysilane was then dissolved in 10 g of the organic solvent and slowly added to a reactor over a period of 10 min. The mixture was stirred at 20° C. for 0.5 h, and then 10 g of polymerizable organic zinc and 0.02 g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum were added. The mixture was stirred at 65° C. for 1 h to mix evenly. The mixture was filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0051] The polymerizable organic zinc is selected from: allyl zinc bromide.

[0052] The organic solvent is anhydrous ethanol.

[0053] Example 2

[0054] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0055] S1: Weigh 85g of polytetrafluoroethylene emulsion, 12g of pre-emulsion, and 3g of zinc-doped multi-walled carbon nanotubes, add them into the reactor, and stir to mix evenly;

[0056] S2: Then add 3g of initiator dropwise into the reactor, add 50g of pre-emulsion dropwise within 2h, and heat to react;

[0057] S3: After the addition is complete, 2 g of initiator is added and the reaction is continued for 3 h;

[0058] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0059] S5: slowly adding the anti-dripping agent emulsion into a dilute hydrochloric acid solution with a mass concentration of 15%, heating it to 85° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0060] The initiator is azobisisobutylamidine hydrochloride.

[0061] The reaction temperature is 75°C.

[0062] The stirring rate is 150 r / min.

[0063] The preparation method of the pre-emulsion is as follows:

[0064] 4 g of emulsifier, 4 g of sodium lauryl sulfate, 32 g of styrene, 8 g of acrylonitrile, 2 g of kaolin, and 40 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0065] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0066] The stirring time is 340 min.

[0067] The method for preparing zinc-doped multi-walled carbon nanotubes is as follows:

[0068] 60 g of hydroxylated multi-walled carbon nanotubes were added to 200 g of an organic solvent and ultrasonically dispersed at 40° C. for 25 min. 1.5 g of allyldimethoxysilane was then dissolved in 15 g of an organic solvent and slowly added to a reactor over a period of 20 min. The mixture was stirred at 25° C. for 1 h, and then 12 g of polymerizable organic zinc and 0.1 g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum were added. The mixture was stirred at 70° C. for 2 h to mix evenly. The mixture was filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0069] The polymerizable organic zinc is selected from zinc dimethacrylate.

[0070] The organic solvent is anhydrous ethanol.

[0071] Example 3

[0072] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0073] S1: Weigh 95g of polytetrafluoroethylene emulsion, 14g of pre-emulsion, and 5g of zinc-doped multi-walled carbon nanotubes, add them into the reactor, and stir to mix evenly;

[0074] S2: Then add 4g of initiator dropwise into the reactor, add 60g of pre-emulsion dropwise within 2h, and heat to react;

[0075] S3: After the addition is complete, 2 g of initiator is added and the reaction is continued for 3 h;

[0076] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0077] S5: slowly adding the anti-dripping agent emulsion into a dilute hydrochloric acid solution with a mass concentration of 15%, heating it to 90° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0078] The initiator is azobisisobutylamidine hydrochloride.

[0079] The reaction temperature is 90°C.

[0080] The stirring rate is 150 r / min.

[0081] The preparation method of the pre-emulsion is as follows:

[0082] 6 g of emulsifier, 6 g of sodium lauryl sulfate, 38 g of styrene, 10 g of acrylonitrile, 2 g of kaolin, and 55 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0083] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0084] The stirring time is 50 min.

[0085] The method for preparing zinc-doped multi-walled carbon nanotubes is as follows:

[0086] 80 g of hydroxylated multi-walled carbon nanotubes were added to 250 g of an organic solvent and ultrasonically dispersed at 40° C. for 25 min. 2 g of allyldimethoxysilane was then dissolved in 25 g of the organic solvent and slowly added to a reactor over a period of 30 min. The mixture was stirred at 35° C. for 1.5 h, and 14 g of polymerizable organic zinc and 0.15 g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum were added. The mixture was stirred at 70° C. for 2 h to mix evenly. The mixture was filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0087] The polymerizable organic zinc is selected from zinc dimethacrylate.

[0088] The organic solvent is isopropyl alcohol.

[0089] Example 4

[0090] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0091] S1: Weigh 100 g of polytetrafluoroethylene emulsion, 15 g of pre-emulsion, and 6 g of zinc-doped multi-walled carbon nanotubes, add them into the reactor, and stir to mix evenly;

[0092] S2: Then add 5g of initiator dropwise into the reactor, add 65g of pre-emulsion dropwise within 2h, and heat to react;

[0093] S3: After the addition is complete, 3 g of initiator is added and the reaction is continued for 4 h;

[0094] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0095] S5: slowly adding the anti-dripping agent emulsion into a dilute hydrochloric acid solution with a mass concentration of 20%, heating it to 95° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0096] The initiator is azobisisobutylamidine hydrochloride.

[0097] The reaction temperature is 95°C.

[0098] The stirring rate is 200 r / min.

[0099] The preparation method of the pre-emulsion is as follows:

[0100] 7 g of emulsifier, 7 g of sodium lauryl sulfate, 40 g of styrene, 12 g of acrylonitrile, 3 g of kaolin, and 60 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0101] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0102] The stirring time is 60 min.

[0103] The method for preparing zinc-doped multi-walled carbon nanotubes is as follows:

[0104] 86 g of hydroxylated multi-walled carbon nanotubes were added to 275 g of an organic solvent and ultrasonically dispersed at 45° C. for 30 min. 2.5 g of allyldimethoxysilane was dissolved in 30 g of an organic solvent and slowly added to a reactor over 40 min. The mixture was stirred at 40° C. for 2 h. 15 g of polymerizable organic zinc and 0.2 g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum were added. The mixture was stirred at 75° C. for 3 h to mix evenly. The mixture was filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0105] The polymerizable organic zinc is selected from: 4-pentenylzinc bromide.

[0106] The organic solvent is isopropyl alcohol.

[0107] Comparative Example 1

[0108] Ordinary ABS plastic without adding high-efficiency anti-dripping agent composition.

[0109] Comparative Example 2

[0110] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0111] S1: Weigh 80g of polytetrafluoroethylene emulsion and 10g of pre-emulsion, add them into the reactor, stir and mix evenly;

[0112] S2: Then add 2g of initiator dropwise into the reactor, add 45g of pre-emulsion dropwise within 2h, and heat to react;

[0113] S3: After the addition is complete, 1 g of initiator is added and the reaction is continued for 2 h;

[0114] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0115] S5: slowly adding the anti-dripping agent emulsion into a 10% mass concentration dilute hydrochloric acid solution, heating to 80° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0116] The initiator is azobisisobutylamidine hydrochloride.

[0117] The reaction temperature is 70°C.

[0118] The stirring rate is 100 r / min.

[0119] The preparation method of the pre-emulsion is as follows:

[0120] 3 g of emulsifier, 3 g of sodium lauryl sulfate, 28 g of styrene, 6 g of acrylonitrile, 1 g of kaolin, and 35 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0121] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0122] The stirring time is 30 minutes.

[0123] Comparative Example 3

[0124] A high-efficiency anti-dripping agent composition and a preparation method thereof, wherein the operation steps are as follows:

[0125] S1: Weigh 80g of polytetrafluoroethylene emulsion, 10g of pre-emulsion, and 2g of zinc-doped multi-walled carbon nanotubes, add them into the reactor, and stir to mix evenly;

[0126] S2: Then add 2g of initiator dropwise into the reactor, add 45g of pre-emulsion dropwise within 2h, and heat to react;

[0127] S3: After the addition is complete, 1 g of initiator is added and the reaction is continued for 2 h;

[0128] S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion;

[0129] S5: slowly adding the anti-dripping agent emulsion into a 10% mass concentration dilute hydrochloric acid solution, heating to 80° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to finally obtain a fine granular high-efficiency anti-dripping agent composition.

[0130] The initiator is azobisisobutylamidine hydrochloride.

[0131] The reaction temperature is 70°C.

[0132] The stirring rate is 100 r / min.

[0133] The preparation method of the pre-emulsion is as follows:

[0134] 3 g of emulsifier, 3 g of sodium lauryl sulfate, 28 g of styrene, 6 g of acrylonitrile, 1 g of kaolin, and 35 g of distilled water were weighed and added into a reactor, stirred, and fully emulsified to obtain a pre-emulsion.

[0135] The emulsifier is a cationic emulsifier such as cetyltrimethylammonium bromide.

[0136] The stirring time is 30 minutes.

[0137] The method for preparing zinc-doped multi-walled carbon nanotubes is as follows:

[0138] 50 g of hydroxylated multi-walled carbon nanotubes were added to 150 g of an organic solvent and ultrasonically dispersed at 35° C. for 20 min. 0.8 g of allyldimethoxysilane was then dissolved in 10 g of the organic solvent and slowly added to a reactor over a period of 10 min. The mixture was stirred at 20° C. for 0.5 h, and 10 g of polymerizable organic zinc was added. The mixture was stirred at 65° C. for 3 h to mix evenly. The mixture was filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes.

[0139] The polymerizable organic zinc is selected from: allyl zinc bromide.

[0140] The organic solvent is anhydrous ethanol.

[0141] The high-efficiency anti-dripping agent compositions prepared in the above examples and comparative examples were added to the samples prepared during the plastic processing process and tested. The results are shown in the following table:

[0142]

[0143] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for preparing a high-efficiency anti-dripping agent composition, the operating steps are: S1: Weigh 80-100 parts of polytetrafluoroethylene emulsion, 10-15 parts of pre-emulsion, and 2-6 parts of zinc-doped multi-walled carbon nanotubes according to their mass, add them into a reactor, and stir to mix evenly; S2: Then add 2-5 parts of the initiator dropwise into the reactor, add 45-65 parts of the pre-emulsion dropwise within 2 hours, and heat to react; S3: After the addition is complete, continue adding 1-3 parts of initiator and continue the reaction for 2-4 hours; S4: After the reaction is completed, the obtained emulsion is filtered and cooled to room temperature, and the aggregates produced by the polymerization are filtered and collected to obtain an anti-dripping agent emulsion; S5: slowly adding the anti-dripping agent emulsion to a dilute hydrochloric acid solution with a mass concentration of 10-20%, heating it to 80-95° C., stirring to break the emulsion, cooling and filtering, and vacuum drying to obtain a fine granular high-efficiency anti-dripping agent composition; The method for preparing zinc-doped multi-walled carbon nanotubes is as follows: According to the weight ratio, 50-86 parts of hydroxylated multi-walled carbon nanotubes are added to 150-275 parts of an organic solvent, and ultrasonically dispersed at 35-45° C. for 20-30 minutes. Then, 0.8-2.5 parts of allyldimethoxysilane are dissolved in 10\30 parts of an organic solvent, and the mixture is slowly added to a reactor over a period of 10-40 minutes. Then, the mixture is stirred at 20-40° C. for 0.5-2 hours. Then, 10-15 parts of polymerizable organic zinc and 0.02-0.2 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum are added. The mixture is stirred at 65-75° C. for 1-3 hours to mix evenly. The mixture is filtered, washed, and dried to obtain the zinc-doped multi-walled carbon nanotubes. The preparation method of the pre-emulsion is: Weigh 3-7 parts of emulsifier, 3-7 parts of sodium lauryl sulfate, 28-40 parts of styrene, 6-12 parts of acrylonitrile, 1-3 parts of kaolin, and 35-60 parts of distilled water according to mass, add them to the reactor, stir, and fully emulsify to obtain a pre-emulsion; The polymerizable organic zinc is selected from the group consisting of allyl zinc bromide, zinc dimethacrylate, and 4-pentenyl zinc bromide.

2. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The initiator is azobisisobutylamidine hydrochloride.

3. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The reaction temperature of step S2 is 70-95°C.

4. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The stirring rate of S1 is 100-200 r / min.

5. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The emulsifier is hexadecyltrimethylammonium bromide cationic emulsifier.

6. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The stirring time in the preparation method of the pre-emulsion is 30-60 minutes.

7. The method for preparing a high-efficiency anti-dripping agent composition according to claim 1, wherein: The organic solvent is anhydrous ethanol or isopropyl alcohol.

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