A polyurethane modified silicone damping material for the leading edge of wind turbine blades

Abstract

The present invention belongs to the technical field of damping materials, and discloses a polyurethane modified silicone damping material for the leading edge of a wind turbine blade. The present invention uses acrylate hindered phenol modified methyl phenyl silicone oil as the main agent of silicone rubber material, vinyl polyurethane as a modifier, mica flakes, fumed silica and the like as fillers, and diisopropylbenzene peroxide and the like as a vulcanizing agent to obtain a polyurethane modified silicone damping material. The molecular chain and the end of the acrylate hindered phenol modified methyl phenyl silicone oil contain a hindered phenol structure, which can form a reversible weak hydrogen bond with polyurethane, thereby improving the damping loss factor tanδ value and damping performance of the material. The material also has excellent tensile properties, impact resistance, low temperature bending resistance, wear resistance, acid and alkali resistance, and aging resistance. It has good practical applications in the leading edge protective coating of wind turbine blades and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of damping materials, and in particular relates to a polyurethane-modified organic silicon damping material used for the leading edge of a wind turbine blade. Background Art

[0002] Damping materials can convert vibration mechanical energy into heat energy for dissipation. They have good shock absorption and noise reduction properties and are widely used in precision instruments, transportation, aerospace and other fields. They mainly include polymer damping materials, alloy damping materials, piezoelectric composite damping materials, etc. Wind turbines will produce severe vibration and noise when they are running. At the same time, the blades of wind turbines are exposed to wind, sand, rain, ultraviolet rays and other environments for a long time. The surface and leading edge of the material are prone to corrosion. It is of great significance to develop high-performance protective coatings for the leading edge of wind turbine blades.

[0003] Silicone rubber has excellent anti-corrosion, waterproof, mechanical, and temperature resistance properties. Improving the damping properties of silicone rubber and improving its vibration reduction, sound absorption, and noise reduction properties can expand the practical application of silicone rubber in the fields of wind power generation, aerospace, etc. Polyurethane is a highly elastic, shock-resistant polymer material, and there are a large number of hydrogen bonds between molecular chains, with a high damping loss factor, and has a wide range of practical applications in damping materials. The present invention aims to obtain a high-performance damping composite material using vinyl-terminated methylphenyl silicone oil, hydrogen-terminated silicone oil, vinyl polyurethane, etc. as raw materials. Summary of the invention

[0004] The invention solves the problems of poor damping performance and low mechanical strength of the silicone rubber and polyurethane composite material.

[0005] The technical solution provided by the present invention is: a polyurethane modified organic silicon damping material, comprising the following components in parts by weight: 100 parts by weight of acrylate hindered phenol modified methylphenyl silicone oil, 20-45 parts by weight of vinyl polyurethane, 30-50 parts by weight of filler, 4-6 parts by weight of diphenylsilanediol, and 0.4-0.7 parts by weight of vulcanizing agent.

[0006] The preparation method of hindered phenol-based methylphenyl silicone oil is as follows: toluene, vinyl-terminated methylphenyl silicone oil, triallyl hindered phenol monomer, and hydrogen-terminated silicone oil are added into a reaction bottle, mixed well, and then a platinum water catalyst is added to carry out a hydrosilylation reaction, and then triallyl hindered phenol monomer is added to carry out a capping reaction, vacuum distillation, methanol washing, and drying to obtain acrylate hindered phenol-modified methylphenyl silicone oil.

[0007] Preferably, the filler includes fumed silica, nano calcium carbonate, and mica flakes.

[0008] Preferably, the vulcanizing agent includes 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di-tert-butylhexylperoxide, dibenzoyl peroxide, and dicumyl peroxide.

[0009] Preferably, the molar ratio of vinyl-terminated methylphenyl silicone oil, triallyl hindered phenol monomer, and hydrogen-terminated silicone oil is (0.6-0.85):(0.21-0.46):1.

[0010] Preferably, the temperature of the hydrosilylation reaction is 85-95° C. and the time is 2-3 h; and the time of the end-capping reaction is 20-40 min.

[0011] Preferably, the preparation method of triallyl hindered phenol monomer is:

[0012] (1) Methanol, diethylenetriamine, 3-tert-butyl-2-hydroxybenzaldehyde and formic acid in a molar ratio of 1:(1.8-2.4):(0.3-0.4) are added to a reaction flask, heated to 50-60°C in a nitrogen atmosphere, reacted for 8-16 hours, then cooled to room temperature, sodium borohydride was added, reacted for 2-3 hours, the solution was distilled under reduced pressure, washed with deionized water, and recrystallized with ethanol to obtain bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine.

[0013] (2) Add acetonitrile, propylene bromide, bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine and potassium carbonate in a molar ratio of (3.6-5.4):1:(3-3.3) to a reaction bottle, react at 50-70° C. for 5-8 hours, distill the solution under reduced pressure, wash with deionized water and acetone in turn, and recrystallize with ethanol to obtain a triallyl hindered phenol monomer.

[0014] Preferably, the preparation method of the polyurethane modified silicone damping material is: add acrylate hindered phenol modified methylphenyl silicone oil, vinyl polyurethane, filler, diphenylsilanediol, and vulcanizing agent into a double-roll mixer, mix at 170-180°C for 30-60 minutes, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170-175°C for 20-30 minutes to obtain the polyurethane modified silicone damping material.

[0015] Preferably, the polyurethane modified organic silicon damping material is used in the leading edge of a wind turbine blade.

[0016] The technical effect is as follows: the present invention uses formic acid as a catalyst and sodium borohydride as a reducing agent to react diethylenetriamine and 3-tert-butyl-2-hydroxybenzaldehyde, and then performs a substitution reaction with allyl bromide to obtain a triallyl hindered phenol monomer. Further, in a platinum water catalyst system, the triallyl hindered phenol monomer is used as a branching monomer to perform a hydrosilylation reaction with vinyl-terminated methylphenyl silicone oil and hydrogen-terminated silicone oil to obtain an acrylate hindered phenol-modified methylphenyl silicone oil with a hyperbranched molecular chain.

[0017] The present invention uses acrylate hindered phenol modified methylphenyl silicone oil as the main agent of silicone rubber material, vinyl polyurethane as a modifier, mica flakes, fumed silica and the like as fillers, and diisopropylbenzene peroxide and the like as a vulcanizing agent to obtain a polyurethane modified silicone damping material. Acrylate hindered phenol modified methylphenyl silicone oil has a hyperbranched molecular chain, better mechanical properties, and the hyperbranched molecular motion has multiplicity, and has good damping properties. At the same time, the terminal olefin group undergoes a vulcanization cross-linking reaction with the vinyl polyurethane to form a tight chemical cross-linking network, which enhances the interface bonding strength between the two, reduces the microphase separation degree between silicone rubber and polyurethane, and can also inhibit corrosive media such as acids and alkalis from entering the matrix, so that the material has better mechanical properties and corrosion resistance.

[0018] The molecular chain and terminal of the acrylate hindered phenol modified methyl phenyl silicone oil contain hindered phenol structure Can be used with polyurethane The groups form reversible weak hydrogen bonds. When the material is subjected to external stress and vibration, the reversible hydrogen bonds break and new hydrogen bonds are generated. This process converts stress and vibration energy into heat energy, thereby improving the damping loss factor tanδ value and damping performance of the material.

[0019] The polyurethane modified organic silicon damping material of the present invention has excellent tensile properties, impact resistance, low temperature bending resistance, wear resistance, acid and alkali resistance and aging resistance. It has good practical applications in the leading edge protective coating of wind turbine blades and the like. As a protective coating, the polyurethane modified organic silicon damping material of the present invention provides excellent impact resistance and wear resistance, prolongs the service life of the blades and reduces maintenance costs. Its damping performance effectively reduces the vibration and noise during the operation of the wind turbine. The material remains stable under long-term exposure to wind, sand, rain and ultraviolet rays, ensuring the efficient operation of the wind turbine. Through scientific material formula and optimized preparation process, the protective performance of the leading edge of the blade is significantly improved, and it has broad application prospects. The material not only performs well in physical properties, but also remains stable in high and low temperature environments. It is an ideal protective material in the fields of wind power generation, aerospace, etc. Through improved chemical structure and fine process control, the material performs well in practical applications and provides a reliable solution for various high-performance requirements.

[0020] The polyurethane modified organic silicon damping material of the present invention has excellent damping performance and temperature resistance, and is suitable for high-demand vibration reduction and noise reduction applications, such as protection and vibration reduction systems of aviation equipment and aerospace equipment. The material still maintains its physical properties in a high-altitude low-temperature environment, providing long-term and reliable protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the reaction formula for preparing triallyl hindered phenol monomer.

[0022] Figure 2 This is the reaction formula for preparing methylphenyl silicone oil modified with acrylate hindered phenol. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The hydrogen-terminated silicone oil of the present invention, the effective ingredient content is ≥99%, Hubei Xinyuhong Biomedical Technology Co., Ltd. Vinyl-terminated methylphenyl silicone oil, the effective ingredient content is ≥99%, Hubei Xinyuhong Biomedical Technology Co., Ltd. Vinyl polyurethane, model QL-0011; Langfang Xinhaochang Anticorrosion Materials Co., Ltd. Platinum water catalyst, Pt content is 1000ppm, Shenzhen Sicheng Silica Gel Co., Ltd.

[0025] Example 1

[0026] (1) Add 80 mL of methanol, 5 mmol of diethylenetriamine, 9 mmol of 3-tert-butyl-2-hydroxybenzaldehyde, and 2 mmol of formic acid to a reaction flask, heat to 50° C. in a nitrogen atmosphere, react for 16 h, then cool to room temperature, add 14 mmol of sodium borohydride, react for 3 h, distill the solution under reduced pressure, wash with deionized water, and recrystallize with ethanol to obtain bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine.

[0027] (2) Add 30 mL of acetonitrile, 21.6 mmol of allyl bromide, 4 mmol of bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine, and 13.2 mmol of potassium carbonate to a reaction bottle, and react at 50° C. for 5 h. Distill the solution under reduced pressure, wash with deionized water and acetone in turn, and recrystallize with ethanol to obtain a triallyl hindered phenol monomer.

[0028] (3) Add 15 mL of toluene, 6 mmol of vinyl-terminated methylphenyl silicone oil, 4 mmol of triallyl hindered phenol monomer, and 10 mmol of terminal hydrogen silicone oil into the reaction bottle, mix well, add 0.3 mL of platinum water catalyst, carry out hydrosilylation reaction at 95°C for 2 hours, then add 0.4 mmol of triallyl hindered phenol monomer, carry out end-capping reaction for 20 minutes, distill under reduced pressure, wash with methanol, and dry to obtain acrylate hindered phenol modified methylphenyl silicone oil.

[0029] (4) Add 1000 g of acrylate hindered phenol modified methyl phenyl silicone oil, 200 g of vinyl polyurethane, 300 g of filler mica flakes, 50 g of diphenylsilanediol, and 4 g of curing agent diisopropylbenzene peroxide into a double-roll mixer, mix at 180° C. for 30 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170° C. for 30 min to obtain a polyurethane modified silicone damping material.

[0030] Example 2

[0031] (1) Add 100 mL of methanol, 5 mmol of diethylenetriamine, 12 mmol of 3-tert-butyl-2-hydroxybenzaldehyde, and 1.5 mmol of formic acid to a reaction flask, heat to 60° C. in a nitrogen atmosphere, react for 8 h, then cool to room temperature, add 15 mmol of sodium borohydride, react for 2 h, distill the solution under reduced pressure, wash with deionized water, and recrystallize with ethanol to obtain bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine.

[0032] (2) Add 20 mL of acetonitrile, 14.4 mmol of allyl bromide, 4 mmol of bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine, and 12 mmol of potassium carbonate to a reaction bottle, and react at 70° C. for 8 h. Distill the solution under reduced pressure, wash with deionized water and acetone in turn, and recrystallize with ethanol to obtain a triallyl hindered phenol monomer.

[0033] (3) Add 20 mL of toluene, 6.7 mmol of vinyl-terminated methylphenyl silicone oil, 3.3 mmol of triallyl hindered phenol monomer, and 10 mmol of terminal hydrogen silicone oil into the reaction bottle, mix well, add 0.3 mL of platinum water catalyst, carry out hydrosilylation reaction at 95 ° C for 2 hours, then add 0.4 mmol of triallyl hindered phenol monomer, carry out end-capping reaction for 20 minutes, distill under reduced pressure, wash with methanol, and dry to obtain acrylate hindered phenol modified methylphenyl silicone oil.

[0034] (4) Add 1000 g of acrylate hindered phenol modified methyl phenyl silicone oil, 250 g of vinyl polyurethane, 500 g of filler fumed silica, 60 g of diphenylsilanediol, and 4 g of curing agent 2,4-dichlorobenzoyl peroxide into a double-roll mixer, mix at 170° C. for 60 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 175° C. for 20 min to obtain a polyurethane modified silicone damping material.

[0035] Example 3

[0036] (1) Add 20 mL of toluene, 7.3 mmol of vinyl-terminated methylphenyl silicone oil, 2.7 mmol of triallyl hindered phenol monomer (prepared according to the method of Example 1), and 10 mmol of terminal hydrogen silicone oil into a reaction bottle, mix well, add 0.3 mL of platinum water catalyst, carry out hydrosilylation reaction at 85° C. for 3 h, then add 0.4 mmol of triallyl hindered phenol monomer, carry out end-capping reaction for 40 min, distill under reduced pressure, wash with methanol, and dry to obtain acrylate hindered phenol modified methylphenyl silicone oil.

[0037] (2) Add 1000 g of acrylate hindered phenol modified methyl phenyl silicone oil, 300 g of vinyl polyurethane, 500 g of filler fumed silica, 50 g of diphenylsilanediol, and 5 g of curing agent 2,4-dichlorobenzoyl peroxide into a double-roll mixer, mix at 170° C. for 60 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 175° C. for 20 min to obtain a polyurethane modified silicone damping material.

[0038] Example 4

[0039] (1) Add 20 mL of toluene, 7.9 mmol of vinyl-terminated methylphenyl silicone oil, 2.1 mmol of triallyl hindered phenol monomer (prepared according to the method of Example 1), and 10 mmol of terminal hydrogen silicone oil into a reaction bottle, mix well, add 0.4 mL of platinum water catalyst, carry out hydrosilylation reaction at 85° C. for 3 h, then add 0.4 mmol of triallyl hindered phenol monomer, carry out end-capping reaction for 40 min, distill under reduced pressure, wash with methanol, and dry to obtain acrylate hindered phenol modified methylphenyl silicone oil.

[0040] (2) Add 1000 g of acrylate hindered phenol modified methyl phenyl silicone oil, 380 g of vinyl polyurethane, 420 g of filler nano calcium carbonate, 60 g of diphenylsilanediol, and 5 g of curing agent dibenzoyl peroxide into a double-roll mixer, mix at 170° C. for 60 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170° C. for 30 min to obtain a polyurethane modified silicone damping material.

[0041] Example 5

[0042] (1) Add 20 mL of toluene, 8.5 mmol of vinyl-terminated methylphenyl silicone oil, 1.5 mmol of triallyl hindered phenol monomer (prepared according to the method of Example 1), and 10 mmol of terminal hydrogen silicone oil into a reaction bottle, mix well, add 0.4 mL of platinum water catalyst, carry out hydrosilylation reaction at 90° C. for 3 h, then add 0.4 mmol of triallyl hindered phenol monomer, carry out end-capping reaction for 30 min, distill under reduced pressure, wash with methanol, and dry to obtain acrylate hindered phenol modified methylphenyl silicone oil.

[0043] (2) Add 1000 g of acrylate hindered phenol modified methylphenyl silicone oil, 450 g of vinyl polyurethane, 500 g of filler fumed silica, 45 g of diphenylsilanediol, and 7 g of vulcanizing agent 2,5-dimethyl-2,5-di-tert-butyl peroxide hexane into a double-roll mixer, mix at 170° C. for 60 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 175° C. for 20 min to obtain a polyurethane modified silicone damping material.

[0044] Comparative Example 1

[0045] (1) Add 1000 g of acrylate hindered phenol modified methylphenyl silicone oil, 300 g of filler mica flakes, 50 g of diphenylsilanediol, and 4 g of curing agent diisopropylbenzene peroxide into a double-roll mixer, mix at 180° C. for 30 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170° C. for 30 min to obtain a polyurethane modified silicone damping material.

[0046] Comparative Example 2

[0047] (1) Add 1000 g of vinyl-terminated methylphenyl silicone oil, 200 g of vinyl polyurethane, 300 g of filler mica flakes, 50 g of diphenylsilanediol, and 4 g of curing agent diisopropylbenzene peroxide into a double-roll mixer, mix at 180° C. for 30 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170° C. for 30 min to obtain a polyurethane-modified silicone damping material.

[0048] Comparative Example 3

[0049] (1) Add 15 mL of toluene, 10 mmol of vinyl-terminated methylphenyl silicone oil, and 10 mmol of hydrogen-terminated silicone oil into a reaction bottle, mix well, add 0.3 mL of platinum water catalyst, carry out hydrosilylation reaction at 95°C for 2 h, distill under reduced pressure, wash with methanol, and dry to obtain modified methylphenyl silicone oil.

[0050] (2) Add 1000 g of modified methyl phenyl silicone oil, 200 g of vinyl polyurethane, 300 g of filler mica flakes, 50 g of diphenylsilanediol, and 4 g of vulcanizing agent diisopropylbenzene peroxide into a double-roll mixer, mix at 180° C. for 30 min, then discharge the material into sheets, and finally vulcanize in a flat vulcanizer at 170° C. for 30 min to obtain a polyurethane modified silicone damping material.

[0051] The tensile properties of polyurethane modified silicone damping materials were tested according to GB / T 528-2009. The test results are shown in the table below.

[0052] Tensile strength(MPa) Elongation at break (%) Example 1 9.8 338.3 Example 2 12.9 269.0 Example 3 15.4 235.7 Example 4 11.1 290.9 Example 5 13.5 258.2 Comparative Example 1 4.3 196.7 Comparative Example 2 5.9 265.4 Comparative Example 3 7.1 229.8

[0053] The dynamic mechanical properties and damping loss factor tanδ value of polyurethane modified silicone damping material were measured by dynamic thermomechanical analyzer. The test method was rectangular tensile, the test frequency was 1Hz, the temperature range was -40-80℃, and the size of the sample was 50mm×5mm×3mm. The larger the damping loss factor tanδ value, the better the damping performance. The test results are shown in the table below.

[0054]

[0055]

[0056] The performance test of the polyurethane modified silicone damping coating is carried out by taking Example 1 as an example. 1000g of acrylate hindered phenol modified methylphenyl silicone oil, 200g of vinyl polyurethane, 300g of filler mica flakes, 50g of diphenylsilanediol, and 4g of vulcanizing agent diisopropylbenzene peroxide are mixed and then coated on the surface of the substrate. The mixture is heat treated at 175°C for 90min to form a paint film coating.

[0057] The bending properties of the paint film coating at low temperature and room temperature were tested according to the method of GB / T 6742-2007. The substrate is tinplate. The test results are shown in the table below.

[0058]

[0059] The impact resistance of polyurethane modified silicone damping material was tested according to the method of GB / T 1732-2020. The substrate is tinplate. Test conditions: temperature 23℃, relative humidity 50%, 1kg weight, height 100cm.

[0060] The wear resistance was tested according to the method of GB / T 1768-2006. The test conditions were: temperature 23°C, relative humidity 50%, the running speed of the wear tester was 1000r, the speed was 60r / min, the pressure load was 1kg, and the grinding wheel model was CS-10. The friction mass loss before and after wear was calculated. The smaller the friction mass loss, the better the wear resistance. The test results are shown in the table below.

[0061] Impact resistance Friction mass loss (mg) Example 1 No damage, no cracking, no peeling 2.76 Example 2 No damage, no cracking, no peeling 2.23 Example 3 No damage, no cracking, no peeling 1.95 Example 4 No damage, no cracking, no peeling 2.20 Example 5 No damage, no cracking, no peeling 2.06 Comparative Example 1 Damaged, cracked, no peeling 9.13 Comparative Example 2 Damaged, cracked, no peeling 5.57 Comparative Example 3 No damage, no cracking, no peeling 3.41

[0062] The acid resistance was tested according to GB / T 9274-1988 (method A), the substrate was tinplate, and the coating was polyurethane modified silicone damping material. Test conditions: temperature 23°C, immersion solution mass fraction 5% sulfuric acid solution, immersion time 336h.

[0063] Alkali resistance was tested according to GB / T 9274-1988 (method A), the substrate was tinplate, and the coating was polyurethane modified silicone damping material. Test conditions: temperature 23°C, immersion solution mass fraction 5% sodium hydroxide solution, immersion time 168h. Test results are shown in the table below.

[0064]

[0065]

[0066] Test the artificial accelerated aging test according to ISO16474-3:2013 method, test conditions: irradiation intensity 0.71W / m 2 , the wavelength of the radiation lamp source is 310nm, and the test period is 1000h. The test results are shown in the table below.

[0067] Aging resistance Example 1 No bubbles, no peeling, no cracking Example 2 No bubbles, no peeling, no cracking Example 3 No bubbles, no peeling, no cracking Example 4 No bubbles, no peeling, no cracking Example 5 No bubbles, no peeling, no cracking Comparative Example 1 Bubbles, cracks, peeling Comparative Example 2 There are bubbles, cracks, and no peeling Comparative Example 3 There are bubbles, cracks, and no peeling

[0068] After testing, the polyurethane modified organic silicon damping materials and coatings of Examples 1-5 have good tensile properties, impact resistance, low temperature bending resistance, wear resistance, acid and alkali resistance, and aging resistance. This is mainly due to the silylation reaction of vinyl-terminated methylphenyl silicone oil, triallyl hindered phenol monomer, and hydrogen-terminated silicone oil to form a unique hyperbranched molecular chain with better mechanical properties, and the hyperbranched molecular motion has multiple properties and good damping properties. At the same time, the terminal olefin group undergoes a vulcanization cross-linking reaction with the vinyl polyurethane to form a tight chemical cross-linking network, which enhances the interfacial bonding strength between the two, reduces the microphase separation between silicone rubber and polyurethane, and can also inhibit corrosive media such as acids and alkalis from entering the matrix, so that the silicone rubber coating has better mechanical properties and corrosion resistance.

[0069] The molecular chain and terminal of the acrylate hindered phenol modified methyl phenyl silicone oil contain hindered phenol structure Can be used with polyurethane The groups form reversible weak hydrogen bonds. When the material is subjected to external stress and vibration, the reversible hydrogen bonds break and new hydrogen bonds are generated. This process converts stress and vibration energy into heat energy, thereby improving the damping loss factor tanδ value and damping performance of the material.

Claims

1. A polyurethane modified silicone damping material, characterized in that: The invention comprises the following components in parts by weight: 100 parts by weight of acrylate hindered phenol modified methylphenyl silicone oil, 20-45 parts by weight of vinyl polyurethane, 30-50 parts by weight of filler, 4-6 parts by weight of diphenylsilanediol, and 0.4-0.7 parts by weight of vulcanizing agent; The preparation method of the acrylate hindered phenol modified methylphenyl silicone oil is as follows: toluene, vinyl-terminated methylphenyl silicone oil, triallyl hindered phenol monomer, and hydrogen-terminated silicone oil are added to a reaction bottle, and after mixing, platinum water catalyst is added to carry out a hydrosilylation reaction, and then triallyl hindered phenol monomer is added to carry out a capping reaction, and vacuum distillation is performed, and methanol washing is performed and drying is performed to obtain the acrylate hindered phenol modified methylphenyl silicone oil; The preparation method of the triallyl hindered phenol monomer is as follows: (1) Add methanol, diethylenetriamine, 3-tert-butyl-2-hydroxybenzaldehyde and formic acid to a reaction flask, heat to 50-60° C. in a nitrogen atmosphere, react for 8-16 hours, then cool to room temperature, add sodium borohydride, react for 2-3 hours, distill the solution under reduced pressure, wash, and recrystallize to obtain bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine; (2) Add acetonitrile, propylene bromide, bis(3-tert-butyl-2-hydroxyphenyl)diethylenetriamine, and potassium carbonate in a molar ratio of (3.6-5.4):1:(3-3.3) into a reaction bottle to react, distill the solution under reduced pressure, wash, and recrystallize to obtain a triallyl hindered phenol monomer; In said (1), the molar ratio of diethylenetriamine, 3-tert-butyl-2-hydroxybenzaldehyde and formic acid is 1:(1.8-2.4):(0.3-0.4); In the step (2), the reaction temperature is 50-70°C and the reaction time is 5-8h.

2. The polyurethane modified silicone damping material according to claim 1, characterized in that: The filler includes fumed white carbon black, nano calcium carbonate and mica flakes.

3. The polyurethane modified silicone damping material according to claim 1, characterized in that: The vulcanizing agent includes 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di-tert-butyl peroxide hexane, dibenzoyl peroxide, and diisopropylbenzene peroxide.

4. The polyurethane modified silicone damping material according to claim 1, characterized in that: The molar ratio of the vinyl-terminated methylphenyl silicone oil, triallyl hindered phenol monomer and terminal hydrogen silicone oil is (0.6-0.85):(0.21-0.46):

1.

5. The polyurethane modified silicone damping material according to claim 1, characterized in that: The temperature of the hydrosilylation reaction is 85-95° C. and the time is 2-3 hours; the time of the end-capping reaction is 20-40 minutes.

6. A method for preparing the polyurethane modified silicone damping material according to any one of claims 1 to 5, characterized in that: The preparation method comprises the following steps: adding acrylate hindered phenol modified methylphenyl silicone oil, vinyl polyurethane, filler, diphenylsilanediol and a vulcanizing agent into a double-roll mixer, mixing at 170-180° C. for 30-60 minutes, then discharging the material into sheets, and finally vulcanizing the material in a flat vulcanizer at 170-175° C. for 20-30 minutes to obtain a polyurethane modified organic silicon damping material.

7. Use of the polyurethane modified silicone damping material obtained by the preparation method according to claim 6 in the leading edge of a wind turbine blade.

Images