Silicon group-containing multifunctional star-shaped butylbenzene transparent anti-impact resin and preparation method thereof

Abstract

The invention belongs to the technical field of high polymer material synthesis and preparation, and particularly discloses a silicon group-containing multifunctional star-shaped butylbenzene transparent anti-impact resin and a preparation method thereof. The silicon group-containing multifunctional star-shaped butylbenzene transparent impact-resistant resin is a star-shaped terpolymer composed of styrene, conjugated diene and a silicon group-containing functionalized 1, 1-diphenylethylene (DPE) derivative, and the number-average molecular weight of the terpolymer is (1-200) * 10 < 4 > g / mol. In terms of 100% of the mass of the terpolymer, the content of the functionalized 1, 1-diphenylethylene derivative containing the silicon group is 0.2%-2%. The star-shaped topological structure prepared by the invention can effectively improve the processability of the butylbenzene resin. The molecular weight distribution index is increased or the branching degree of the polymer is improved, so that the processability and the cold flow performance of the product are improved, and the preparation method has the advantages of simple process, easiness in production control, easiness in product type conversion and the like, and has a good market prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer material synthesis and preparation, and particularly relates to a type of silicon-group-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin and a preparation method thereof. Background Art

[0002] Styrene-butadiene resin combines high transparency with high impact resistance, is non-toxic and environmentally friendly, and can be used in food containers and packaging, films and sheets, medical devices, high-end consumer products, toys, electrical instrument panels, footwear, and household appliances. Global consumption of styrene-butadiene resin is expected to maintain steady growth over the next few years, with the fastest growth expected in the Asian market, leading to a shift in market focus towards Asia. Traditional styrene-butadiene resin synthesis generally utilizes anionic polymerization technology, using styrene and butadiene as monomers, cyclohexane or other non-polar mixed solvents as solvents, and butyl lithium as an initiator. Numerous styrene-butadiene resin grades are currently available, and various molecular structures can be obtained through different polymerization processes. The initiator and monomers can be added in single or multiple additions. Furthermore, linear and star-shaped styrene-butadiene resins can be produced through non-coupling and coupling methods, respectively. Star-shaped styrene-butadiene transparent impact-resistant resins incorporate a coupling reaction during their preparation compared to linear styrene-butadiene transparent impact-resistant resins. The introduction of this coupling reaction significantly enriches the product range of styrene-butadiene transparent impact-resistant resins.

[0003] However, the existing butadiene-styrene transparent impact-resistant resin still has problems with poor processing performance, cold flow, and compatibility, as well as the problem of not being able to have multiple good properties at the same time. The preparation process is cumbersome and the preparation process is difficult to control. This is also a technical problem that needs to be urgently solved in this application. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a type of star-shaped styrene butadiene transparent impact-resistant resin with multifunctional silicon groups. By adding silicon-containing group-functionalized 1,1-diphenylethylene derivatives and controlling the order of adding the silicon-containing group-functionalized 1,1-diphenylethylene derivatives, the derivatives can be distributed in the chain or chain end of the silicon-containing group-functionalized star-shaped styrene butadiene transparent impact-resistant resin. By adding a coupling agent, star-shaped styrene butadiene transparent impact-resistant resins with different arm numbers can be synthesized. Through the interaction of the polymer chain end groups (polymer chain end group effect), the compatibility of the material can be improved and the mechanical properties of the material can be regulated. By controlling the amount of monomers added and the order of addition, linear precursors such as block structures, gradient structures, and random structures are formed. By regulating the transparency, haze, mechanical properties and other parameters of the star-shaped styrene butadiene resin, different physical property requirements can be met.

[0005] In a first aspect, the present invention provides a type of silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin, wherein the silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin is a star-shaped block copolymer of styrene, a conjugated diene, and a silicon-containing functionalized 1,1-diphenylethylene derivative (DPE);

[0006] The number average molecular weight of the silicon-containing multifunctional star-shaped styrene butadiene transparent impact-resistant resin is in the range of 1 to 200×10 4 g / mol, preferably in the range of 15 to 150×10 4 g / mol, and the molecular weight distribution index ranges from 1.02 to 1.70;

[0007] Taking the total mass of the silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin as 100%, the styrene content is 45% to 90%, preferably 50% to 85%, the content of silicon-containing functionalized 1,1-diphenylethylene derivatives is 0.2% to 2%, the isoprene (Ip) content is 0 to 15%, preferably in the range of 8 to 12%, and the rest is butadiene (Bd).

[0008] Furthermore, the sequence structure of styrene, butadiene and styrene in the silicon-containing multifunctional star-shaped butadiene styrene transparent impact-resistant resin is any one of a block structure, a gradient block structure and a random block structure.

[0009] Furthermore, the silicon-containing group-functionalized 1,1-diphenylethylene derivative is selected from 1,1-diphenylethylene derivatives containing siloxy groups, silicon hydrogen groups, siloxy groups / silicon hydrogen groups, siloxy groups / amine groups and silicon hydrogen groups / amine groups; the siloxy groups, silicon hydrogen groups, siloxy groups / silicon hydrogen groups, siloxy groups / amine groups and silicon hydrogen groups / amine groups are connected to the para position, meta position or ortho position of the phenyl group in the silicon-containing group-functionalized 1,1-diphenylethylene derivative.

[0010] On the other hand, the present invention provides a method for preparing a type of silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin, comprising the following steps:

[0011] S1. Under the protection of inert gas, add the measured non-polar solvent, polarity regulator and silicon-containing functionalized 1,1-diphenylethylene derivative monomer into a polymerization reactor, adjust to the set temperature, add the alkyl lithium initiator according to the measured amount, the initiation temperature range is 10-90°C, and the reaction time is 3-10 hours;

[0012] S2, then add styrene, butadiene, and isoprene in the set order, control the reaction temperature at 30-110°C, and the reaction time is 1-10 hours;

[0013] S3. Add a star coupling agent to the polymerization reactor and continue the reaction for 0.5 to 5 hours while controlling the reaction temperature to 30-110°C;

[0014] S4. Finally, add a terminator and an antioxidant, stir evenly and then discharge the material to prepare a silicon-group-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin.

[0015] Furthermore, in step S2, the silicon-containing functionalized 1,1-diphenylethylene derivative monomer and styrene, butadiene, and isoprene are simultaneously added to a polymerization reactor to prepare a star-shaped butadiene-styrene transparent impact-resistant resin containing silicon-containing groups at both the chain ends and in the chain.

[0016] Furthermore, the styrene, butadiene, isoprene or a mixture thereof is added in steps and reacted in steps. By adjusting the monomer addition order, a star-shaped styrene-butadiene transparent impact-resistant resin containing multifunctional silicon groups such as a block structure, a gradient block structure, and a random block structure can be formed;

[0017] Furthermore, the molar ratio of the total amount of the silicon-containing functionalized 1,1-diphenylethylene derivative added in each step to the alkyl lithium initiator is (1-5):1.

[0018] Furthermore, the molar ratio of the polarity regulator to the alkyl lithium initiator is (0.5-5):1;

[0019] Furthermore, the mass ratio of styrene (St), butadiene (Bd), and isoprene (Ip) is (0.8-1.6):1:(0-0.3);

[0020] Furthermore, the molar ratio of the star coupling agent to the alkyl lithium initiator is (0.1-3):1; the molar ratio of the terminator to the alkyl lithium initiator is (1-10):1.

[0021] Furthermore, the mass fraction of the three reactive monomers, styrene (St), butadiene (Bd), and isoprene (Ip), in the solution is 5-25%.

[0022] Furthermore, the mass ratio of the antioxidant to the three reaction monomers of styrene (St), butadiene (Bd), and isoprene (Ip) is 1:(1000-10000), and the mass ratio of the antioxidant to the three reaction monomers of styrene (St), butadiene (Bd), and isoprene (Ip) is 1:(1000-10000).

[0023] Furthermore, the silicon-containing functionalized 1,1-diphenylethylene derivative is selected from diphenylethylene derivatives containing siloxy groups, silicon hydride groups and siloxy groups / silicon hydride groups.

[0024] Furthermore, the non-polar solvent is selected from one or more mixtures of non-polar aromatic hydrocarbons and non-polar aliphatic hydrocarbons, and specifically selected from the non-polar solvent generally selected from: benzene, toluene, ethylbenzene, xylene, pentane, hexane, heptane, octane, cyclohexane, mixed aromatic hydrocarbons (such as mixed xylenes), mixed aliphatic hydrocarbons (such as raffinate oil), preferably benzene, toluene, hexane, and cyclohexane.

[0025] When the silicon-containing group-functionalized 1,1-diphenylethylene derivative is at the chain end, its molar mass is less than or equal to the molar mass of the lithium in the alkyl lithium initiator; when the silicon-containing group-functionalized 1,1-diphenylethylene derivative is in the chain, its molar mass is greater than or equal to the molar mass of the lithium in the alkyl lithium initiator; in particular, 1,1-bis[4-(dimethylsilylhydrogen)phenyl]ethylene can only enter the chain by way of a capped linear precursor and cannot enter the chain by way of advance addition during the monomer reaction.

[0026] Furthermore, the alkyl lithium initiator is selected from any one or a mixture of monofunctional alkyl lithium RLi initiators that can be used for anionic polymerization of butadiene, isoprene, and styrene, wherein R is a hydrocarbon group with 2 to 20 carbon atoms, which can be an alkane group or an aromatic group, preferably one of n-butyl lithium, sec-butyl lithium, and tert-butyl lithium.

[0027] Furthermore, the polarity regulator is selected from one or more of oxygen-containing, nitrogen-containing, sulfur-containing, phosphorus-containing polar compounds and alkoxy metal compounds, preferably tetrahydrofuran, 2,2-bis(2-tetrahydrofuranyl)propane, 2,2-bis(5-methyl-2-tetrahydrofuranyl)propane, ethyltetrahydrofuranyl ether, tetramethylethylenediamine, pentamethyldiethylenetriamine, dipiperidylethane, potassium tert-butoxide / sodium alkoxide, and diethylene glycol diethyl ether; whether to use polar additives is determined according to the designed microstructure and sequence structure.

[0028] Furthermore, the antioxidant is selected from one or a mixture of amine antioxidants and phenolic antioxidants. Generally selected from: 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-phenyl-α-naphthylamine, N-phenyl-β-naphthylamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenylenediamine, N,N'-diphenyl-p-phenylenediamine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), β-(3.5-di-tert-butyl, 4-hydroxyphenyl) propionate, 2,6-di-tert-butylphenol, preferably N-phenyl-α-naphthylamine, N-phenyl-β-naphthylamine, N-isopropyl-N'-phenyl-p-phenylenediamine;

[0029] The star-shaped coupling agent is selected from Si(R1) n(R2) m Sn(R1) n (R2) m 、Ti(R1) n (R2) m 、Pb(R1) n (R2) m 、Ge(R1) n (R2) m 、Zr(R1) n (R2) m A mixture of one or more coupling agents, wherein n+m=3, 4, 6, 8; R1 is one or two of the halogen elements F, Cl, Br, and I; R2 is a hydrocarbon group with 2 to 20 carbon atoms, and R can be an alkane group, an aromatic hydrocarbon group, or a 1,1-diphenylethylene derivative.

[0030] Beneficial effects

[0031] The star-shaped styrene butadiene transparent impact-resistant resin incorporates a coupling reaction during its preparation process. This coupling reaction increases the polymer molecular weight. After the styrene butadiene copolymerization reaction, the resulting copolymer still possesses active chain ends. By utilizing this characteristic, a coupling agent containing two or more functional groups is added to the system to react with the active center group, resulting in a star-shaped styrene butadiene transparent impact-resistant resin with a controllable number of arms. The star-shaped styrene butadiene transparent impact-resistant resin prepared by this method increases the polymer molecular weight, enhances the molecular weight distribution index, and improves the polymer branching, resulting in improved processing and cold flow properties. The star-shaped topology improves the melt flow rate and processing properties of the styrene butadiene resin. This method offers advantages such as a simple process, easy production control, and ease of product transition. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] The preferred embodiments of the present invention will be described in detail below with reference to the examples. It should be understood that the following examples are provided for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art may make various modifications and substitutions to the present invention without departing from the purpose and spirit of the present invention.

[0035] Unless otherwise specified, the experimental methods and calculation methods used in the following examples are all conventional methods. Unless otherwise specified, the materials, reagents, etc. used in the following examples are all commercially available.

[0036] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0037] (1) Injection molding of styrene-butadiene resin

[0038] The injection molding machine is a Haake minijet pro produced by Thermo Fisher Scientific. The barrel temperature is 160-170°C, the mold temperature is 40°C, the pressure is 300 bar or 350 bar, the injection holding time and the mold holding time are both 10 seconds, and the injection molded specimens are left to stand at room temperature for 24 hours to fully release the internal stress before use.

[0039] (2) Melt flow rate test

[0040] The test instrument is an MFI-1211 melt flow rate tester manufactured by Jinjian Testing Instrument Co., Ltd. The test follows ISO 1133 standards, with a load of 2.16 kg, an automatic cutting interval of 10 or 20 seconds, and ten cuts. During the test, the instrument barrel is heated to 190°C and then held constant. The resin sample is placed in the barrel and allowed to stand for 3 minutes until it melts. The sample is then evenly extruded using the load. Samples are collected and weighed after each cut, and the average result is calculated.

[0041] (3) Shore hardness test

[0042] The test instrument used was an LX-DY digital Shore hardness tester manufactured by Longrun Technology Co., Ltd. The specimen dimensions were identical to those used in the bending test. The test was conducted in accordance with ISO 868. The specimen was placed on a solid surface. The indenter of the durometer was pressed vertically into the specimen surface, ensuring full contact between the indenter and the specimen. A pressure of 1 kg was applied. The hardness value was read 15 seconds after the indenter had been in full contact with the specimen. Five tests were performed on each sample, and the results were averaged.

[0043] (4) Vicat softening point test

[0044] The test instrument was a VTM1600 microcomputer-controlled thermal deformation Vicat softening tester manufactured by Sansi Zongheng Technology Co., Ltd. The specimen dimensions were identical to those used in the bending tests. The test was conducted in accordance with ISO 306. The sample was placed on the test bench, and the indenter was positioned to contact the sample surface. The test program was started and the sample was heated according to the set conditions (heating rate of 120°C / h, state-controlled temperature of 50°C), while the indenter was controlled to move downward at a constant rate. The temperature at which the indenter penetrated the sample surface to the predetermined depth was recorded. Five tests were performed for each sample, and the results were averaged.

[0045] (5) Optical performance test

[0046] The test instrument was a YH1200 haze meter manufactured by Tri-En Technology Co., Ltd. The test was conducted according to ASTM D1003, and the instrument calibration was performed according to JJF 1303-2011. The illumination source was a 400-700nm LED light source. During testing, the sample surface was ensured to be flat, free of foreign matter, scratches, oil stains, dust, and visible defects and particles. The test specimens were injection molded and measured (30 ± 2) mm × (30 ± 2) mm × (1 ± 0.1) mm. Five tests were performed on each sample, and the results were averaged.

[0047] (6) Mechanical properties test

[0048] The tensile and flexural properties testing instrument was a 5567A materials testing machine produced by Instron. The tensile test was conducted in accordance with ISO 527, with a tensile rate of 5 mm / min, an effective distance of 25 mm, and a spline shape and size of the ISO 527-2-5A standard dumbbell spline. The tensile strength, elongation at break, and Young's modulus of the corresponding specimens were recorded. Five experiments were performed for each specimen, and the median value was used for the final result. The flexural test was conducted in accordance with ISO 178, with a bending rate of 2 mm / min, a span of 64 mm, and a spline size of (80 ± 2) mm × (10 ± 2) mm × (4 ± 2) mm. The flexural modulus and maximum flexural stress of the corresponding specimens were recorded. Five experiments were performed for each specimen, and the median value was used for the final result. Izod notched impact testing was performed using a GT-7045-ALN impact tester manufactured by Gotech. The notches were created using a GT-7015-A3 specimen flattening tester manufactured by Gotech. The notch depth was (2 ± 0.2) mm. Testing was conducted according to ISO 180 / A, with a 5.5J pendulum, a 62mm span, and a pendulum angle of (150 ± 0.2) mm. The specimen dimensions were identical to those used in the bending tests. The notched impact strength of each specimen was recorded. Five tests were performed for each sample, and the results were averaged.

[0049] (7) H NMR spectroscopy (1 H-NMR)

[0050] The test instrument is a Varian DLG 400 MHz NMR spectrometer manufactured by Varian, with tetramethylsilane (δ = 0 ppm) as the internal standard. An appropriate amount of the sample to be tested (5-10 mg) is dissolved in deuterated chloroform and tested at room temperature. This test method is used to determine the molecular structure of monomers and polymers.

[0051] (8) Gas chromatography / triple quadrupole mass spectrometry (GC-MS)

[0052] The test instrument is an Agilent 7000B Triple Quadrupole gas chromatograph / triple quadrupole mass spectrometer. This test method is used for the structural analysis of monomers.

[0053] (9) Gel permeation chromatography (GPC)

[0054] The test instrument is a Waters 1515 chromatography system (equipped with HT4 and HT5 separation columns and a 2414 differential detector) manufactured by Waters. THF is used as the mobile phase at a flow rate of 1.0 ml / min, the column temperature is 35°C, and the instrument calibration standard is PS. This test method is used to determine the molecular weight and distribution of polymers.

[0055] (10) Differential Scanning Calorimetry (DSC)

[0056] The test instrument is TAQ2000 produced by TA. The test is carried out under nitrogen protection, with a heating and cooling rate of 10℃ / min and a test temperature range of -100-160℃. This test method is used to determine the T g .

[0057] (11) Scanning electron microscopy (SEM)

[0058] The test instrument used was a SEM5000 scanning electron microscope (SEM) manufactured by Guoyi Quantum, with an accelerating voltage range of 20V-30kV and a resolution of 1.0nm or less. This test method was used to observe the morphology of the impact cross-section of the spline. Before testing, a conductive film was applied to the notched surface of the spline using a Quorum Q150T coating system to improve SEM imaging quality.

[0059] Example 1 (star-shaped butadiene-styrene transparent impact-resistant resin containing a functionalized monosilane group at the chain end):

[0060] Under the protection of inert gas, 1000g toluene, 0.1g tetrahydrofuran and 0.1g DPE-SiH monomer were added to a polymerization reactor, 1ml alkyl lithium initiator was added, the initiation temperature was 30°C, and then monomers St (50g), Bd (10g) and Ip (5g) were added in sequence, and the reaction temperature was 30°C; after the monomer reaction was completed, a star coupling agent was added, and the molar ratio of the star coupling agent to the alkyl lithium initiator was 0.1:1. After the coupling reaction was completed, 1ml terminator and 0.1g antioxidant were added, stirred evenly and discharged to obtain a star-shaped butadiene styrene transparent impact-resistant resin with a monosilane group functionalized at the chain end, with a number average molecular weight (M n ) is 3×10 4 g / mol, molecular weight distribution index (PDI) range is 1.02, Shore hardness is 77, haze is 1.3%, and Izod impact strength is 2.6KJ / m 2 , light transmittance is 90% and elongation at break is 167%.

[0061] Example 2 (star-shaped styrene-butadiene transparent impact-resistant resin containing a monosilane-hydrogen functionalized chain):

[0062] Under the protection of inert gas, 2000g hexane, 0.1g 2,2-di(2-tetrahydrofuryl)propane and 0.5g DPE-SiH monomer were added to a polymerization reactor, 1.5ml alkyl lithium initiator was added and the initiation temperature was 35°C, monomers St (100g), Bd (15g) and Ip (10g) were added in sequence, and the reaction temperature was 40°C; after the monomer reaction was completed, a star coupling agent was added; the molar ratio of the star coupling agent to the alkyl lithium initiator was 2:1, and after the coupling reaction was completed, 2ml of a terminator and 0.2g of an antioxidant were added, stirred evenly and discharged to obtain a star-shaped butadiene styrene transparent impact-resistant resin containing a monosilane group functionalized in the chain, with a number average molecular weight (M n ) is 42×10 4 g / mol, molecular weight distribution index (PDI) range is 1.16, Shore hardness is 65, haze is 1.2%, and Izod impact strength is 3.4KJ / m 2 , light transmittance is 93% and elongation at break is 187%.

[0063] Example 3: (Star-shaped butadiene-styrene transparent impact-resistant resin containing disiloxane groups functionalized at the chain end)

[0064] Under the protection of inert gas, 2500g of methylcyclohexane, 0.15g of ethyl tetrahydrofuranyl ether and 0.15g of DPE-2SiH were added to a polymerization reactor, 2ml of alkyl lithium initiator was added, the initiation temperature was 40°C, and then monomers of styrene, butadiene or a mixture thereof were added in a set order, the reaction temperature was 50°C, and after the monomer reaction was completed, a star coupling agent was added; the molar ratio of the star coupling agent to the alkyl lithium initiator was 3:1. After the coupling reaction was completed, 0.3g of a terminator and 0.3g of an antioxidant were added, stirred evenly and then discharged to obtain a star-shaped butadiene styrene transparent impact-resistant resin with a disiloxane group functionalized at the chain end, with a number average molecular weight (M n ) is 58×10 4 g / mol, molecular weight distribution index (PDI) range is 1.33, Shore hardness is 72, haze is 1.6%, and Izod impact strength is 4.1KJ / m 2 , light transmittance is 86% and elongation at break is 203%.

[0065] The above-described embodiments merely express the implementation methods of the present invention, but should not be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A type of silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin, characterized in that: The silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin is a star-shaped block copolymer of styrene, conjugated diene, and silicon-containing functionalized 1,1-diphenylethylene derivative; The number average molecular weight of the silicon-containing multifunctional star-shaped styrene butadiene transparent impact-resistant resin is in the range of 1 to 200×10 4 g / mol, and the molecular weight distribution index ranges from 1.02 to 1.70; Taking the total mass of the silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin as 100%, the styrene content is 45% to 90%, the content of the silicon-containing functionalized 1,1-diphenylethylene derivative is 0.2% to 2%, the isoprene content is 0 to 15%, and the rest is butadiene.

2. The silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin according to claim 1, characterized in that: Taking the total mass of the silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin as 100%, the styrene content is 50% to 85%, and the isoprene content is 8% to 12%.

3. The silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin according to claim 1, characterized in that: The silicon-containing functionalized 1,1-diphenylethylene derivative is selected from 1,1-diphenylethylene derivatives containing siloxy groups, silicon hydrogen groups, silicon oxygen groups / silicon hydrogen groups, silicon oxygen groups / amino groups and silicon hydrogen groups / amino groups; the silicon oxygen groups, silicon hydrogen groups, silicon oxygen groups / silicon hydrogen groups, silicon oxygen groups / amino groups and silicon hydrogen groups / amino groups are connected to the para position, meta position or ortho position of the phenyl group in the silicon-containing functionalized 1,1-diphenylethylene derivative.

4. A method for preparing a silicon-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Under the protection of inert gas, add the measured non-polar solvent, polarity regulator and silicon-containing functionalized 1,1-diphenylethylene derivative monomer into the polymerization reactor, adjust to the set temperature, and add alkyl lithium initiator according to the measured amount. The initiation temperature range is 10~90 o C, reaction time 3-10 hours; S2, then add styrene, butadiene, isoprene in the set order, and control the reaction temperature at 30-110 o C, reaction time 1~10h; S3. Add the star coupling agent to the polymerization reactor and continue the reaction for 0.5-5 hours, controlling the reaction temperature to 30-110°C; S4. Finally, add a terminator and an antioxidant, stir evenly and then discharge the material to prepare a silicon-group-containing multifunctionalized star-shaped styrene-butadiene transparent impact-resistant resin.

5. The preparation method according to claim 4, characterized in that In step S2, the silicon-containing functionalized 1,1-diphenylethylene derivative monomer and styrene, butadiene and isoprene are simultaneously added to a polymerization reactor to prepare a star-shaped butadiene-styrene transparent impact-resistant resin containing silicon groups at both the chain ends and in the chain.

6. The preparation method according to any one of claims 4 or 5, characterized in that The molar ratio of the total amount of the silicon-containing functionalized 1,1-diphenylethylene derivative added in each step to the alkyl lithium initiator is (1-5):

1.

7. The preparation method according to claim 4, characterized in that The mass ratio of styrene, butadiene and isoprene is (0.8-1.6):1:(0-0.3); The mass fraction of the three reactive monomers, styrene, butadiene and isoprene, in the solution is 5-25%.

8. The preparation method according to claim 4, characterized in that The molar ratio of the polarity regulator to the alkyl lithium initiator is (0.5-5):1; The molar ratio of the star coupling agent to the alkyl lithium initiator is (0.1-3):1; the molar ratio of the terminator to the alkyl lithium initiator is (1-10):1; The mass ratio of the antioxidant to the three reaction monomers of styrene (St), butadiene (Bd), and isoprene (Ip) is 1: (1000-10000), and the mass ratio of the antioxidant to the three reaction monomers of styrene (St), butadiene (Bd), and isoprene (Ip) is 1: (1000-10000).

9. The preparation method according to claim 4, characterized in that The non-polar solvent is selected from one of benzene, toluene, ethylbenzene, xylene, pentane, hexane, heptane, octane, cyclohexane, mixed aromatic hydrocarbons, and mixed aliphatic hydrocarbons; The alkyl lithium initiator is selected from at least one of the monofunctional alkyl lithium RLi initiators used for anionic polymerization of butadiene, isoprene and styrene, wherein R is a hydrocarbon group having 2 to 20 carbon atoms; The polarity regulator is selected from at least one of oxygen-containing, nitrogen-containing, sulfur-containing, phosphorus-containing polar compounds or alkoxy metal compounds; The antioxidant is selected from 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-phenyl-α-naphthylamine, N-phenyl-β-naphthylamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenylenediamine, N,N'-diphenyl-p-phenylenediamine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), β-(3.5-di-tert-butyl, 4-hydroxyphenyl) propionate, and 2,6-di-tert-butylphenol; The star-shaped coupling agent is selected from Si(R1) n (R2) m Sn(R1) n (R2) m 、Ti(R1) n (R2) m 、Pb(R1) n (R2) m 、Ge(R1) n (R2) m 、Zr(R1) n (R2) m At least one of the following, wherein n+m=3, 4, 6, 8; R1 is at least one of the halogen elements F, Cl, Br, and I; R2 is a hydrocarbon group with 2 to 20 carbon atoms, and R is an alkane group or an aromatic hydrocarbon group or a 1,1-diphenylethylene derivative.