Organosilicon composition

Abstract

The invention provides an organic silicon composition which is characterized in that a silane coupling agent, fatty alcohol and hydroxyl silicone oil react under an alkaline condition to form modified silicone oil, the crosslinking degree of the modified silicone oil is improved through introduction of the coupling agent, the foam eliminating and inhibiting performance is improved, and meanwhile the problem that the modified silicone oil is unstable in hydrolysis is solved; subsequently, the modified silicone oil continues to react with the MQ resin and the white carbon black under the alkaline condition to form an organic silicon composition, the finally formed organic silicon active matter is stable in foam eliminating and inhibiting performance in a water-based system and has the defoaming and defoaming performance at the same time, siloxane groups can be rapidly spread in an application system, introduced fatty alcohol groups can be rapidly defoamed, and the defoaming effect is good. The foaming agent is especially suitable for foaming systems with micro-fine particles, such as papermaking pulping, calcium silicate board production, mineral flotation and the like.

Description

Technical Field

[0001] The invention relates to an organosilicon composition, which belongs to fine chemicals. Therefore, the invention belongs to the technical field of fine chemical preparations. Background Art

[0002] Foam is a common phenomenon in life and work. However, in industrial production, foam can sometimes bring great harm, such as reducing the working efficiency of the machine, delaying working time, affecting the quality of the product, etc. There are mainly physical and chemical methods to eliminate harmful foam, and defoaming agent defoaming is one of the chemical methods. With the substantial increase in the production scale and production efficiency of industrial enterprises, defoaming agent defoaming has been more widely used. At present, various defoaming agents are widely used in papermaking industry, textile printing and dyeing, oil extraction and refining, coatings, emulsion polymerization, sewage treatment, metal cleaning and other industries.

[0003] According to the different defoaming active ingredients, defoamers are divided into several main types, such as mineral oil type, polyether type and silicone type. Compared with other defoamers, silicone defoamers have stable chemical properties, few side effects, and good defoaming ability and long-lasting anti-foaming ability at very low dosage, so they are highly favored. Silicone composition is the core of silicone defoamer, and its defoaming speed and anti-foaming performance directly affect the performance of the final product.

[0004] For organosilicon defoamers, the improvement of the defoaming and antifoaming performance of defoaming active ingredients is the main direction of improvement of organosilicon defoamers.

[0005] CN110064233A uses fumed silica, part of polydimethylsiloxane, and silane coupling agent to prepare an organosilicon composition with a viscosity of 500-200000cp, and introduces modified silica to improve the defoaming and antifoaming performance of the composition; CN107475735A provides an organosilicon defoamer for cleaning cold-rolled steel plates, which can control the foam of the on-site cleaning tank and prevent the tank liquid and foam from overflowing, and a preparation method thereof, wherein the active ingredients include branched polydimethylsiloxane, modified silicone oil, nano-silicon dioxide, high-grade fatty alcohol ester, silane coupling agent, emulsifier, preservative and thickener, and the particle size of nano-silicon dioxide is 10-50nm, and its particle size distribution is small, and it can be evenly dispersed in the emulsion to improve the stability of the emulsion. After hydrolysis and condensation, the silane coupling agent can form a stable Si-O-Si chemical bond polymer network structure, which can also improve the defoaming performance and stability of the defoamer. In CN106799067A, methyltrimethoxysilane is used as a raw material and a silane coupling agent is used as a modifier. Polymethylsilsesquioxane powder is prepared by a base-catalyzed hydrolysis and polycondensation method, and the powder is charged into a reaction kettle with white carbon black, etc. to prepare a defoaming agent with fast defoaming speed, long foam suppression time, excellent dispersibility and outstanding defoaming persistence. In CN106334347A, terminal allyl hyperbranched polyether polyol is prepared by modifying the end group of a hyperbranched polyether, and the double bond structure of the modified hyperbranched polyether is used to react with polysiloxane to undergo a silylation reaction to prepare a hyperbranched polyether-modified polysiloxane, thereby improving the shear resistance and defoaming and foam suppression performance of the defoaming agent. The presence of silane coupling agent segments is used to couple hyperbranched polyether grafted polysiloxane with other filler components, thereby improving the anti-shear performance and high temperature resistance of the defoamer; CN114602214A prepares a bio-based defoamer by introducing polyether-modified polysiloxane with a special structure, specially modified silica, bio-wax and bio-based surfactant into a bio-based carrier. The bio-based defoamer prepared by using fatty alcohol-modified silica has the characteristics of low dosage, good compatibility and excellent defoaming performance. The above patents all introduce silane coupling agents or fatty alcohol-modified hydrophobic silica, and their purpose is to improve the defoaming and defoaming performance of the silicone defoaming composition. The silicone composition has low surface tension, so the defoaming and defoaming performance is obvious, but compared with the fatty alcohol emulsion, the degassing and defoaming performance of the silicone composition needs to be improved, so that the application performance of the silicone composition can be improved.

[0006] The invention provides an organosilicon composition. First, a silane coupling agent, a fatty alcohol and a hydroxy silicone oil are reacted under alkaline conditions to form a modified silicone oil. The introduction of the coupling agent improves the crosslinking degree of the modified silicone oil, improves the foam removal and suppression performance and improves the problem of hydrolysis instability of the modified silicone oil. Subsequently, the modified silicone oil continues to react with an MQ resin and white carbon black under alkaline conditions to form an organosilicon composition. The finally formed organosilicon active substance has stable foam removal and suppression performance in an aqueous system and has defoaming and degassing performance. The siloxane group can be quickly spread in the application system, and the introduced fatty alcohol group can be quickly degassed. The organosilicon composition is particularly suitable for foaming systems with fine particles such as paper pulping, calcium silicate board production, and mineral flotation. Technical Solution

[0007] An organosilicon composition, characterized in that it consists of the following substances: A. Modified silicone oil The modified silicone oil is formed by the reaction of a silane coupling agent, a fatty alcohol and a hydroxy silicone oil under alkaline conditions; The amount of the modified silicone oil used accounts for 80-95% of the total mass of the organic silicon composition.

[0008] A1. Silane coupling agent The general structural formula of the silane coupling agent is: 1 a S O 2 (4-a) , where R 1 The same or different, selected from methyl, ethyl or phenyl; R2 is the same or different, selected from methyl, ethyl; subscript a is 0 or 1, and the amount of silane coupling agent accounts for 1-5% of the total mass of the modified silicone oil.

[0009] A2. Fatty alcohol The fatty alcohol is C6-C26 fatty alcohol, and the amount of the fatty alcohol accounts for 5-15% of the total mass of the modified silicone oil.

[0010] A3. Hydroxy silicone oil The general structural formula of the hydroxy silicone oil is: HO[Si(R 3 2)O] b Si(R 3 2) OH, where R 3 The alkyl radicals are the same or different and have 1 to 30 carbon atoms. The subscript b represents an integer whose value makes the viscosity of the hydroxy silicone oil at 25° C. range from 5 to 200 mPa.s. The amount of the hydroxy silicone oil used accounts for 80 to 95% of the total mass of the modified silicone oil.

[0011] A4. Catalyst I The catalyst I is selected from one or more of sodium hydroxide, potassium hydroxide, cesium hydroxide, tetramethylammonium hydroxide, sodium ethoxide, diethanolamine, triethanolamine, and potassium organosiloxane alcohol. The amount of catalyst I is 1-5% of the total mass of the modified silicone oil.

[0012] B. MQ silicone resin The MQ silicone resin is composed of chain segments (CH3)3SiO l / 2 (M unit) and chain SiO 4 / 2 The MQ resin composed of (Q units) has a molar ratio of (0.4-1.2):1.0, and the amount used accounts for 1-10% of the total mass of the silicone composition.

[0013] C. White carbon black The white carbon black is hydrophobic white carbon black, and its specific surface area is 50-500m 2 / g, and the amount of white carbon black accounts for 1~10% of the total mass of the silicone composition.

[0014] D. Catalyst II The catalyst II is selected from one or more of sodium hydroxide, potassium hydroxide, cesium hydroxide, tetramethylammonium hydroxide, sodium ethoxide, diethanolamine, triethanolamine, and potassium organosiloxane alcohol, and the amount of catalyst II accounts for 1-10% of the total mass of the organosilicon composition.

[0015] The preparation method of the organosilicon composition is as follows: (1) Preparation of modified silicone oil: Step 1: Add a specified amount of hydroxy silicone oil, silane coupling agent, and fatty alcohol into a reaction vessel, and add catalyst I when heated to 50-70°C; Step 2: Continue to heat to 100-120°C and react for 1-3 hours; Step 3: Then, vacuum remove low molecular weight substances at 130-150°C, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Add a specified amount of modified silicone oil, white carbon black, MQ silicone resin, and catalyst II into a reaction container, mix well, heat to 70-140° C., react for 2-5 hours, and cool to room temperature to obtain the organosilicon composition.

[0016] Specific implementation methods Example 1

[0017] (1) Preparation of modified silicone oil: Step 1: Add 84 g of hydroxy silicone oil with a viscosity of 200 mPa.s, 1 g of methyltrimethoxysilane, and 10 g of C6 fatty alcohol into a reaction container, and add 5 g of sodium hydroxide when heated to 50°C; Step 2: Continue to heat to 100°C and react for 3 hours; Step 3: Then, vacuumize at 130°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Mix 80g of modified silicone oil and 6g of a specific surface area of ​​50m 2 / g of hydrophobic silica, 4g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.4:1.0), and 10g of sodium hydroxide are added into a reaction container, mixed evenly, heated to 140°C for reaction for 2h, and cooled to room temperature to obtain the organosilicon composition. Example 2

[0018] (1) Preparation of modified silicone oil: Step 1: Add 80 g of hydroxy silicone oil with a viscosity of 60 mPa.s, 2 g of phenyltriethoxysilane, and 15 g of C8 fatty alcohol into a reaction container, and add 3 g of potassium hydroxide when heated to 60°C; Step 2: Continue to heat to 110°C and react for 2 hours; Step 3: Then, vacuumize at 140°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 85g of modified silicone oil and 4g of a silica gel with a specific surface area of ​​100m 2 / g of hydrophobic silica, 3g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.6:1.0), and 8g of potassium hydroxide are added into a reaction container, mixed evenly, heated to 90°C for reaction for 3h, and cooled to room temperature to obtain the organosilicon composition. Example 3

[0019] (1) Preparation of modified silicone oil: Step 1: Add 90 g of hydroxy silicone oil with a viscosity of 100 mPa.s, 3 g of a mixture of tetraethoxysilane and dimethyldiethoxysilane, and 5 g of C10 fatty alcohol into a reaction container, and add 2 g of tetramethylammonium hydroxide when heated to 70°C; Step 2: Continue to heat to 120°C and react for 1 hour; Step 3: Then, vacuumize at 150°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Mix 90g of modified silicone oil and 2g of silica gel with a specific surface area of ​​200m 2 / g of hydrophobic silica, 2g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.8:1.0), and 6g of tetramethylammonium hydroxide are added into a reaction container, mixed evenly, heated to 110°C for reaction for 2h, and cooled to room temperature to obtain the silicone composition. Example 4

[0020] (1) Preparation of modified silicone oil: Step 1: Add 87 g of hydroxy silicone oil with a viscosity of 20 mPa.s, 4 g of a mixture of methyltriethoxysilane and ethyltriethoxysilane, and 8 g of C14 fatty alcohol into a reaction container, and add 1 g of a mixture of diethanolamine and triethanolamine when heated to 65°C; Step 2: Continue to heat to 115°C and react for 2 hours; Step 3: Then, vacuumize at 135°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Mix 95g of modified silicone oil and 3g of silica with a specific surface area of ​​300m 2 / g of hydrophobic silica, 1g of MQ silicone resin (the molar ratio of M unit to Q unit is 1.0:1.0), and 1g of sodium ethoxide are added into a reaction container, mixed evenly, heated to 70°C for reaction for 5h, and cooled to room temperature to obtain the organosilicon composition. Example 5

[0021] (1) Preparation of modified silicone oil: Step 1: Add 85 g of hydroxy silicone oil with a viscosity of 5 mPa.s, 5 g of ethyltriethoxysilane, and 6 g of C18 fatty alcohol into a reaction container, and add 4 g of potassium organosiloxane when heated to 50°C; Step 2: Continue to heat to 120°C and react for 1 hour; Step 3: Then, vacuumize at 140°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Mix 80g of modified silicone oil and 1g of a silica gel with a specific surface area of ​​400m 2 / g of hydrophobic silica, 10g of MQ silicone resin (the molar ratio of M unit to Q unit is 1.2:1.0), 9g of diethanolamine and a mixture of triethanolamine are added to a reaction container, mixed evenly, heated to 120°C for reaction for 3h, and cooled to room temperature to obtain the silicone composition. Example 6

[0022] (1) Preparation of modified silicone oil: Step 1: Add 95 g of hydroxy silicone oil with a viscosity of 200 mPa.s, 2 g of tetraethoxysilane, and 2 g of C24 fatty alcohol into a reaction container, and add 1 g of cesium hydroxide when heated to 70°C; Step 2: Continue to heat to 100°C and react for 3 hours; Step 3: Then, vacuumize at 150°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 82g of modified silicone oil and 10g of a silica gel with a specific surface area of ​​500m 2 / g of hydrophobic white carbon black, 5g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.5:1.0), and 3g of potassium organosiloxane are added into a reaction container, mixed evenly, heated to 130°C for reaction for 4h, and cooled to room temperature to obtain the organosilicon composition. Example 7

[0023] (1) Preparation of modified silicone oil: Step 1: Add 82 g of hydroxy silicone oil with a viscosity of 150 mPa.s, 3 g of a mixture of dimethyldiethoxysilane and ethyltriethoxysilane, and 12 g of C26 fatty alcohol into a reaction container, and add 3 g of sodium ethoxide when heated to 65°C; Step 2: Continue to heat to 120°C and react for 1 hour; Step 3: Then, vacuumize at 140°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 82g of modified silicone oil and 8g of a specific surface area of ​​250m 2 / g of hydrophobic white carbon black, 6g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.6:1.0), and 4g of sodium hydroxide are added into a reaction container, mixed evenly, heated to 120°C for reaction for 4h, and cooled to room temperature to obtain the organosilicon composition.

[0024] Comparative Example 1 - Removal of fatty alcohol (1) Preparation of modified silicone oil: Step 1: Add 84 g of hydroxy silicone oil with a viscosity of 200 mPa.s and 11 g of methyltrimethoxysilane into a reaction vessel, and add 5 g of sodium hydroxide when heated to 50°C; Step 2: Continue to heat to 100°C and react for 3 hours; Step 3: Then, vacuumize at 130°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Mix 80g of modified silicone oil and 6g of a specific surface area of ​​50m 2 / g of hydrophobic silica, 4g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.4:1.0), and 10g of sodium hydroxide are added into a reaction container, mixed evenly, heated to 140°C for reaction for 2h, and cooled to room temperature to obtain the organosilicon composition.

[0025] Comparative Example 2 - Removal of coupling agent (1) Preparation of modified silicone oil: Step 1: Add 80 g of hydroxy silicone oil with a viscosity of 60 mPa.s and 17 g of C8 fatty alcohol into a reaction container, and add 3 g of potassium hydroxide when heated to 60°C; Step 2: Continue to heat to 110°C and react for 2 hours; Step 3: Then, vacuumize at 140°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 85g of modified silicone oil and 4g of a silica gel with a specific surface area of ​​100m 2 / g of hydrophobic silica, 3g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.6:1.0), and 8g of potassium hydroxide are added into a reaction container, mixed evenly, heated to 90°C for reaction for 3h, and cooled to room temperature to obtain the organosilicon composition.

[0026] Comparative Example 3-Modified silicone oil replaced with alkyl modified silicone oil (1) Preparation of alkyl-modified silicone oil: Referring to the preparation method of component A alkyl-modified polyorganosiloxane in Example 1 of patent CN102698475B, the specific preparation method is: add 50g of hydrogen-containing polyorganosiloxane CH3SiO (CH3HSiO) with a viscosity of 1500mPa.s into a reaction container. 36 [(CH3)2SiO] 290 Si(CH3)3, 15.1g α-dodecene, 2.4g vinyl silicone oil Vi(CH3)2SiO[(CH3)2SiO] with a viscosity of 200mPa.s 145 Si(CH3)3 (Vi is vinyl) and 0.11g of chloroplatinic acid isopropanol solution were reacted at 130℃ for 0.5h to obtain alkyl-modified silicone oil; (2) Mix 90g of alkyl-modified silicone oil and 2g of a silica gel with a specific surface area of ​​200m 2 / g of hydrophobic silica, 2g of MQ silicone resin (the molar ratio of M unit to Q unit is 0.8:1.0), and 6g of tetramethylammonium hydroxide are added into a reaction container, mixed evenly, heated to 110°C for reaction for 2h, and cooled to room temperature to obtain the silicone composition.

[0027] Comparative Example 4 - Removal of white carbon black (1) Preparation of modified silicone oil: Step 1: Add 87 g of hydroxy silicone oil with a viscosity of 20 mPa.s, 4 g of a mixture of methyltriethoxysilane and ethyltriethoxysilane, and 8 g of C14 fatty alcohol into a reaction container, and add 1 g of a mixture of diethanolamine and triethanolamine when heated to 65°C; Step 2: Continue to heat to 115°C and react for 2 hours; Step 3: Then, vacuumize at 135°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 95 g of modified silicone oil, 4 g of MQ silicone resin (the molar ratio of M unit to Q unit is 1.0:1.0), and 1 g of sodium ethoxide are added to a reaction container, mixed evenly, heated to 70° C., reacted for 5 h, and cooled to room temperature to obtain the silicone composition.

[0028] Comparative Example 5 - Removal of MQ Silicone Resin (1) Preparation of modified silicone oil: Step 1: Add 85 g of hydroxy silicone oil with a viscosity of 5 mPa.s, 5 g of ethyltriethoxysilane, and 6 g of C18 fatty alcohol into a reaction container, and add 4 g of potassium organosiloxane when heated to 50°C; Step 2: Continue to heat to 120°C and react for 1 hour; Step 3: Then, vacuumize at 140°C to remove low molecular weight substances, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) 80g of modified silicone oil and 11g of a silica gel with a specific surface area of ​​400m 2 / g of hydrophobic silica, 9g of a mixture of diethanolamine and triethanolamine were added into a reaction container, mixed evenly, heated to 120°C for reaction for 3h, and cooled to room temperature to obtain the organosilicon composition.

[0029] Examples 1-7 and Comparative Examples 1-5 were used to prepare silicone emulsions according to the prior art, and silicone emulsions S1-S7 and SE1-SE5 were prepared respectively. The specific preparation method is: 40g of silicone composition, 8g of Span 80 and 12g of fatty alcohol polyoxyethylene ether are stirred and mixed for 20 minutes. After completion, the temperature of the above system is raised to 80°C, and then the system temperature is maintained, 40g of water is slowly added, and the stirring speed is increased until the system becomes an oil-in-water emulsion. 20g of water is continued to be added to the emulsion mass concentration of 50%, the crude emulsion is further emulsified through a colloid mill, and finally the emulsion with a solid content of 25% is diluted with an aqueous solution of a polyacrylic acid thickener.

[0030] Performance testing of silicone emulsion (1) Test method for defoaming and defoaming performance: Take 0.5% sodium dodecylbenzene sulfonate aqueous solution as the foaming medium, add 50 ml of the above foaming medium into a 100 ml stoppered measuring cylinder, then add 0.01% silicone emulsion, shake it vertically 50 times, and record the time when the foam disappears to the liquid surface, which is the defoaming time T. 50 , shake again 100 times and record the defoaming time T 100 , shake again 200 times and record the defoaming time T 200 The shorter the defoaming time is, the better the defoaming and anti-foaming performance of the silicone emulsion is. At the same time, the more times the shaking is performed, the shorter the defoaming time is, and the better the defoaming and anti-attenuation performance of the silicone emulsion is.

[0031]

[0032] (2) Degassing performance test Degassing performance test method: The test equipment is an air content meter (CN201575962U) made by Jiangsu Sixin Technology Application Research Institute Co., Ltd.; the test medium is the papermaking pulping black liquor made in the laboratory; during the test, the papermaking black liquor is heated to 60°C in advance, 0.05g of silicone emulsion is added to 2000ml of pulping black liquor, and after stirring evenly and standing at a constant temperature (60°C) for 5 minutes, the papermaking black liquor is added to the air content meter for testing. The higher the air content in the pulping black liquor, the worse the degassing performance of the silicone emulsion.

[0033]

Claims

1. An organosilicon composition, characterized in that: It is composed of the following components: A. Modified silicone oil: The modified silicone oil is formed by the reaction of silane coupling agent, fatty alcohol and hydroxy silicone oil under alkaline conditions, and the amount used accounts for 80-95% of the total mass of the organic silicon composition; B. MQ silicone resin: the amount is 1-10% of the total mass of the silicone composition; C. White carbon black: The amount is 1-10% of the total mass of the organosilicon composition; D. Catalyst II: The catalyst II is a basic catalyst, and its usage accounts for 1-10% of the total mass of the organosilicon composition; The preparation method of the organosilicon composition is: (1) Preparation of modified silicone oil: Step 1: Add hydroxy silicone oil, silane coupling agent and fatty alcohol into a reaction vessel, and add catalyst I when heated to 50-70°C; Step 2: Continue to heat to 100-120°C and react for 1-3 hours; Step 3: Then, vacuum remove low molecular weight substances at 130-150°C, and use a homogenizer to homogenize the obtained substance, and finally cool to room temperature to obtain modified silicone oil; (2) Add a specified amount of modified silicone oil, white carbon black, MQ silicone resin, and catalyst II into a reaction container, mix well, heat to 70-140° C., react for 2-5 hours, and cool to room temperature to obtain the organosilicon composition.

2. The organosilicon composition according to claim 1, characterized in that: The general structural formula of the silane coupling agent is as follows: HR 1 a Yes 2 (4-a) , Where R 1 The same or different, selected from methyl, ethyl or phenyl; R2 is the same or different, selected from methyl, ethyl; subscript a is 0 or 1, and the amount of silane coupling agent accounts for 1-5% of the total mass of the modified silicone oil.

3. The organosilicon composition according to claim 1, characterized in that: The fatty alcohol is C6-C26 fatty alcohol, and the amount of the fatty alcohol accounts for 5-15% of the total mass of the modified silicone oil.

4. The organosilicon composition according to claim 1, wherein: The general structural formula of the hydroxy silicone oil is: HO[Si(R 3 2)O] b Si(R 3 2)OH Where R 3 The alkyl radicals are the same or different and have 1 to 30 carbon atoms. The subscript b represents an integer whose value makes the viscosity of the hydroxy silicone oil at 25° C. range from 5 to 200 mPa.s. The amount of the hydroxy silicone oil used accounts for 80 to 95% of the total mass of the modified silicone oil.

5. The organosilicon composition according to claim 1, characterized in that: The catalyst I is selected from one or more of sodium hydroxide, potassium hydroxide, cesium hydroxide, tetramethylammonium hydroxide, sodium ethoxide, diethanolamine, triethanolamine, and potassium organosiloxane alcohol. The amount of catalyst I is 1-5% of the total mass of the modified silicone oil.

6. The organosilicon composition according to claim 1, characterized in that: The MQ silicone resin is composed of chain segments (CH3)3SiO l / 2 (M unit) and chain SiO 4 / 2 The MQ resin composed of (Q units) has a molar ratio of (0.4~1.2):1.

0.

7. The organosilicon composition according to claim 1, characterized in that: The white carbon black is hydrophobic white carbon black, and its specific surface area is 50-500m 2 / g.

8. The organosilicon composition according to claim 1, characterized in that: The catalyst is selected from one or more of sodium hydroxide, potassium hydroxide, cesium hydroxide, tetramethylammonium hydroxide, sodium ethoxide, diethanolamine, triethanolamine, and potassium organosiloxane.

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