阅读说明：本技术 一种有机硅涂料及其制备方法 (Organic silicon coating and preparation method thereof ) 是由 秦荣勤 于 2020-11-30 设计创作，主要内容包括：本发明适用材料技术领域,提供有机硅涂料及其制备方法,包括A组分以及B组分；A组分包括：聚甲基乙烯基硅氧烷100份、聚甲基硅氧烷5-20份、有机硅树脂5-20份、改性白炭黑5-30份、耐高温助剂0.5-20份、改性阻燃剂10-70份、改性无机纤维粉体5-50份、催化剂0.1-5份；B组分包括：聚甲基乙烯基硅氧烷100份、聚甲基硅氧烷5-20份、有机硅树脂5-20份、改性白炭黑5-30份、耐高温助剂0.5-20份、改性阻燃剂10-70份、改性无机纤维粉体5-50份、含氢硅油0.5-5份、抑制剂0.0001-1份。本发明具有优异稳定的耐高温性能、防火性能,阻燃性能以及电性能,可广泛应用于各行各业。(The invention is applicable to the technical field of materials, and provides an organic silicon coating and a preparation method thereof, wherein the organic silicon coating comprises a component A and a component B; the component A comprises: 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder and 0.1-5 parts of catalyst; the component B comprises: 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder, 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor. The invention has excellent and stable high temperature resistance, fireproof performance, flame retardant performance and electrical performance, and can be widely applied to various industries.)

1. An organic silicon coating is characterized by comprising a component A and a component B;

wherein the component A comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder and 0.1-5 parts of catalyst;

the component B comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder, 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor.

2. The organosilicon coating according to claim 1, wherein the modified white carbon black is hydrophobic fumed silica or hydrophobic precipitated white carbon black modified by a surface treatment agent using white carbon black as a raw material.

3. The organosilicon coating according to claim 2, wherein the surface treatment agent is one or more of chlorosilane, siloxane ring body, hexamethyldisilazane and vinyl tetramethyl silazane in any proportion.

4. The organosilicon coating according to claim 1, wherein the modified flame retardant is obtained by modifying aluminum hydroxide or magnesium hydroxide as a raw material with a silane coupling agent or a phthalate coupling agent.

5. The organic silicon coating of claim 1, wherein the modified inorganic fiber powder is obtained by modifying one of glass fiber powder, aluminum silicate fiber powder and wollastonite fiber serving as a raw material by using a silane coupling agent.

6. The silicone coating of claim 1, wherein the silicone resin is a methyl vinyl silicon resin or a methyl vinyl phenyl silicon resin.

7. The organic silicon coating as claimed in claim 1, wherein the high temperature resistant auxiliary agent is one or more of nano cerium oxide, gas phase nano titanium oxide and gas phase nano titanium oxide doped iron oxide in any proportion.

8. The silicone coating of claim 1, wherein the inhibitor is one or both of ethynylcyclohexanol, methylbutynol in any proportion.

9. The organic silicon coating material as claimed in claim 1, wherein the catalyst is a complex containing one or more of platinum, rhodium and palladium in any proportion.

10. A method for producing the silicone coating according to any one of claims 1 to 9, comprising:

mixing, grinding and vacuumizing for heat treatment, standing and cooling 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent and 10-70 parts of modified flame retardant agent, and 5-50 parts of Europe modified inorganic fiber powder to obtain a first base material;

adding 0.1-5 parts of catalyst into the first base material under the condition of normal temperature, and uniformly stirring to obtain a component A;

mixing, grinding and vacuumizing for heat treatment, standing and cooling 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant and 5-50 parts of modified inorganic fiber powder to obtain a second base material;

adding 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor into the second base material at normal temperature, and stirring uniformly to obtain the component B.

Technical Field

The invention belongs to the technical field of materials, and particularly relates to an organic silicon coating and a preparation method thereof.

Background

With the development of socioeconomic, the requirements of various industries on fire-resistant and flame-retardant materials are higher and higher. In recent years, with the development of new energy automobiles, the energy density of power batteries is higher and higher, and the requirement on safety protection is also higher and higher. The organosilicon material has excellent high and low temperature resistance, is easy to obtain and has excellent flame retardant and fireproof properties, so the organosilicon material is widely applied to the industry of new energy automobiles. The fireproof flame-retardant organic silicon coating can be applied to coating high silica glass fiber cloth, so that the electrical property of the glass fiber cloth is effectively improved, the excellent high-temperature-resistant fireproof property of the material is ensured, and the fireproof flame-retardant organic silicon coating can be widely applied to improving the safety of a power battery.

The organic silicon coating in the prior art mainly comprises a solvent-free anti-pollution flashover organic silicon coating, a weather-resistant anti-cracking organic silicon fireproof coating, a high-temperature-resistant anti-corrosion nuclear radiation-resistant nano modified organic silicon coating and an organic silicon flame-retardant fireproof coating, wherein the solvent-free anti-pollution flashover organic silicon coating mainly aims at the application in the aspect of anti-pollution flashover, has certain flame-retardant property, is easy to crack under the condition of high-temperature flame and has poor flame-retardant property, phenyl polysiloxane is required to be used if the coating aims at the high-temperature environment, the price and the cost are higher, and the coating uses a halogen flame retardant and releases certain toxic gas under the fire environment; the weather-resistant and crack-resistant organic silicon fireproof coating has certain flame-retardant and fireproof characteristics aiming at the fireproof and anticorrosion application of a steel structure, but the coating uses a phosphorus-nitrogen intumescent flame retardant, so that the high-temperature resistance of an organic silicon system can be greatly reduced, and the coating is not suitable for a high-temperature environment; the high-temperature-resistant, anti-corrosion and nuclear radiation-resistant nano modified organic silicon coating takes phenyl silicone resin as a base material, the price and the cost are higher, the coating is not suitable for being applied to fire-resistant occasions, a large amount of organic solvent is required in the using process, and the coating is not environment-friendly for operators; the organic silicon flame-retardant fireproof coating is developed aiming at the application of external wall heat insulation, and the special high-temperature resistance characteristic is not effectively improved.

Therefore, the existing organic silicon coating has the problems that the high temperature resistance and the fireproof flame retardant property cannot be combined, and the environmental protection property is poor.

Disclosure of Invention

The embodiment of the invention provides an organic silicon coating, and aims to solve the problems that the existing organic silicon coating cannot have both high-temperature resistance and fireproof flame-retardant performance and is poor in environmental protection.

The embodiment of the invention is realized in such a way that the organic silicon coating comprises a component A and a component B;

wherein the component A comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder and 0.1-5 parts of catalyst;

the component B comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder, 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor.

The embodiment of the invention also provides a preparation method of the organic silicon coating, which comprises the following steps:

mixing, grinding and vacuumizing for heat treatment, standing and cooling 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant and 5-50 parts of modified inorganic fiber powder to obtain a first base material;

adding 0.1-5 parts of catalyst into the first base material under the condition of normal temperature, and uniformly stirring to obtain a component A;

mixing, grinding and vacuumizing for heat treatment, standing and cooling 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant and 5-50 parts of inorganic modified inorganic fiber powder to obtain a second base material;

adding 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor into the second base material at normal temperature, and stirring uniformly to obtain the component B.

The two-component organic silicon coating provided by the embodiment of the invention is easy to prepare, has excellent and stable fireproof performance, flame retardant performance and electrical performance, has high bonding strength with glass fiber cloth, is burnt for 5 minutes at 1200 ℃, does not fall off, has hard residue after high-temperature burning, does not fall off, has no crack on the surface of the coating after being aged at high temperature for 7 days at 250 ℃, has the flame retardant grade reaching FV-0 and the withstand voltage being more than 8KV according to UL test standard, and can be widely applied to various industries.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

When the A/B double-component organic silicon coating provided by the embodiment of the invention is used, the organic silicon coating obtained by mixing the component A and the component B in a specific ratio has excellent and stable fireproof performance, flame retardant performance and electrical performance, the bonding strength of the organic silicon coating with glass fiber cloth is high, the organic silicon coating is burnt for 5 minutes at the temperature of 1200 ℃, no falling is caused, residues after high-temperature burning are hard and do not fall off, in addition, after the organic silicon coating is aged at the temperature of 250 ℃ for 7 days at high temperature, the surface of the coating has no cracks, the flame retardant grade reaches FV-0 through UL test standard test, and the voltage resistance is more than 8KV, and the organic silicon coating can be widely applied to various industries.

In the embodiment of the invention, the organic silicon coating comprises a component A and a component B;

wherein the component A comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder and 0.1-5 parts of catalyst;

the component B comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of modified white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of modified flame retardant, 5-50 parts of modified inorganic fiber powder, 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor;

it is noted that in actual use, the A component and the B component are generally mixed in a weight ratio of 1:1 in the art, although a certain tolerance range may exist.

In one preferred embodiment of the invention, the silicone coating comprises an A component and a B component;

wherein the component A comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 10-20 parts of organic silicon resin, 15-25 parts of modified white carbon black, 5-10 parts of high-temperature resistant auxiliary agent, 40-60 parts of modified flame retardant, 25-30 parts of modified inorganic fiber powder and 0.1-1 part of catalyst;

the component B comprises the following raw materials in parts by weight:

100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 10-20 parts of organic silicon resin, 15-25 parts of modified white carbon black, 5-10 parts of high-temperature resistant auxiliary agent, 40-60 parts of modified flame retardant, 25-30 parts of modified inorganic fiber powder, 1-3 parts of hydrogen-containing silicone oil and 0.0001-0.0003 part of inhibitor.

In the embodiment of the invention, the modified white carbon black is hydrophobic fumed silica or hydrophobic precipitated white carbon black which is prepared by taking white carbon black as a raw material and modifying the white carbon black by using a surface treating agent; the surface treating agent is one or more of chlorosilane, siloxane ring body, hexamethyldisilazane and vinyl tetramethyl silazane in any proportion. The modified white carbon black is preferably fumed silica treated by vinyl tetramethyl disilazane, and the specific surface area of the white carbon black is 150-300m²A/g, preferably of 200m²/g。

In the embodiment of the invention, the modified flame retardant is obtained by modifying aluminum hydroxide or magnesium hydroxide serving as a raw material with a silane coupling agent or a titanate coupling agent, wherein the modifying agent is preferably modified by the silane coupling agent.

In the embodiment of the invention, the modified inorganic fiber powder is obtained by modifying one of glass fiber powder, aluminum silicate fiber powder and wollastonite fiber serving as a raw material by using a silane coupling agent. It is generally desired that the fiber particle size range be 5-10 microns, the fiber aspect ratio be greater than 10:1, and aluminum silicate fiber powder is preferred.

In the embodiment of the present invention, the silane coupling agent may be a coupling agent a171, a172, a151, KH550, KH560, or the like; the titanate coupling agent can be isopropyl tristearate, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, isopropyl trioleate acyloxy titanate and the like.

In the embodiment of the present invention, the silicone resin is a methyl vinyl silicone resin or a methyl vinyl phenyl silicone resin, and is preferably a methyl vinyl silicone resin.

In the embodiment of the invention, the high-temperature resistant auxiliary agent is one or more of nano cerium oxide, gas-phase nano titanium oxide and gas-phase nano titanium oxide doped iron oxide in any proportion, and is preferably a gas-phase nano titanium dioxide doped iron oxide substance, such as DE Gusai PF2 (R) (D)TiO2 PF 2)。

In the embodiment of the invention, the inhibitor is one or two of ethynylcyclohexanol and methylbutynol in any proportion, and is preferably methylbutynol.

In an embodiment of the present invention, the catalyst is a complex containing one or more of noble metals such as platinum, rhodium, palladium, and the like at any ratio, and is preferably a platinum complex, wherein the preparation method of the platinum complex comprises: 20g of chloroplatinic acid, 500g of vinyl double-end socket, 800g of isopropanol and 60g of sodium bicarbonate are put into a three-neck flask provided with a condenser, and are refluxed for 1 hour at the temperature of 70 ℃, and then filter residues are removed by filtration, so that the platinum complex catalyst is obtained.

In the embodiment of the invention, the polymethylvinylsiloxane is terminal vinyl silicone oil, side-milling silicone oil containing vinyl, or mixture of several silicone oils in any proportion, the viscosity of the silicone oil is 250-20000 mPas, preferably 500-5000 mPas, and the vinyl content is 0.04-0.8%. The vinyl silicone oil used in the embodiments of the present invention is derived from Dow Corning.

In the embodiment of the invention, the polymethylsiloxane is methyl silicone oil, and the viscosity of the silicone oil ranges from 250-20000 mPas, preferably from 1000-5000 mPas.

In the embodiment of the invention, the hydrogen content of the hydrogen-containing silicone oil ranges from 0.6 to 1.7%, and preferably 0.9% hydrogen content, and the hydrogen-containing silicone oil comprises hydrogen at two ends and pendant groups.

The embodiment of the invention also provides a preparation method of the organic silicon coating, which comprises the following steps:

mixing, grinding and vacuumizing for heat treatment, standing and cooling 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of flame retardant and 5-50 parts of inorganic fiber powder to obtain a first base material;

adding 0.1-5 parts of catalyst into the first base material under the condition of normal temperature, and uniformly stirring to obtain a component A;

mixing, grinding and vacuumizing for heat treatment, standing and cooling to obtain a second base material, wherein 100 parts of polymethylvinylsiloxane, 5-20 parts of polymethylsiloxane, 5-20 parts of organic silicon resin, 5-30 parts of white carbon black, 0.5-20 parts of high-temperature resistant auxiliary agent, 10-70 parts of flame retardant and 5-50 parts of inorganic fiber powder;

adding 0.5-5 parts of hydrogen-containing silicone oil and 0.0001-1 part of inhibitor into the second base material at normal temperature, and stirring uniformly to obtain the component B.

In a preferred embodiment of the present invention, the white carbon black, the flame retardant, and the inorganic fiber powder are respectively placed in a high-speed mixer in advance to be subjected to respective surface modification, and the specific treatment method is as follows: under the high-speed stirring state of the powder, the modifier is added into a high-speed mixer in a spraying mode or a dropping mode, wherein the stirring speed and the stirring time are not particularly limited, the modifier is uniformly dispersed on the surface of the powder only by utilizing the high-speed motion of the powder, and meanwhile, the self-heating generated by the high-speed motion of the powder is utilized to carry out heat treatment, thus finishing the surface modification treatment process. Specifically, the modification process of the white carbon black comprises the following steps: putting the white carbon black into a high-speed stirrer and adding a surface treating agent into the high-speed stirrer in a spraying or dripping mode, wherein the using amount of the surface treating agent is 2 weight percent relative to the using amount of the white carbon black; the surface treating agent is one or more of chlorosilane, siloxane ring bodies, hexamethyldisilazane and vinyl tetramethyl silazane in any proportion; the white carbon black is preferably gas-phase white carbon black treated by vinyl tetramethyl disilazane, and the specific surface area of the white carbon black is 150-300m²A/g, preferably of 200m²(ii) in terms of/g. Modification of flame retardantsThe process is as follows: and (2) putting aluminum hydroxide or magnesium hydroxide into a high-speed stirrer for stirring, and adding a silane coupling agent or phthalate ester coupling agent into the stirrer in a spraying or dropping manner, wherein the modifying agent is preferably modified by the silane coupling agent, and the using amount of the silane coupling agent or the phthalate ester coupling agent is 2 weight percent relative to the flame retardant. The modification process of the inorganic fiber powder comprises the following steps: during the stirring process of one of the glass fiber powder, the aluminum silicate fiber powder and the wollastonite fiber in a high-speed stirrer, adding a silane coupling agent in a spraying or dropping manner, wherein the dosage of the silane coupling agent is 1 weight percent relative to the inorganic fiber powder.

In a preferred embodiment of the invention, part of the vinyl silicone oil, the methyl silicone oil, the silicone resin, the white carbon black, the high temperature resistant auxiliary agent, the flame retardant, the inorganic fiber powder and other components are mixed uniformly in a kneader, ground to micron level by a three-roll grinder or a sand mill, then the rest vinyl silicone oil is added in a planetary mixer, after uniform stirring, heating and vacuumizing are carried out for 1-2 hours, standing and cooling are carried out, after the material is cooled to normal temperature, the catalyst is added, and after uniform stirring and vacuumizing are completed, the component A is taken out of the kettle to obtain the component A.

In a preferred embodiment of the invention, the components such as vinyl silicone oil, methyl silicone oil, silicone resin, white carbon black, high temperature resistant auxiliary agent, flame retardant, inorganic fiber powder and the like are mixed uniformly in a kneader, ground to micron level by a three-roll grinder or a sand mill, then the rest vinyl silicone oil is added in a planetary mixer, after uniform stirring, heated to 150 ℃ and vacuumized (vacuum degree-0.08 MPa) for 1-2 hours, kept stand and cooled, after the material is cooled to normal temperature, inhibitor and hydrogen-containing silicone oil are added, and after uniform stirring and vacuumized treatment, the mixture is taken out of the pot to obtain the component B.

In a preferred embodiment of the invention, A, B components are mixed in a ratio of 1:1 weight ratio, and coating the mixture on an application product by spraying, rolling or dipping processes, wherein if the mixture is subjected to high-temperature baking treatment, the mixture can be quickly cured; if the curing time is 3-4 hours at normal temperature, the curing time is needed to be the fastest. It is worth noting that the silicone coating is prepared in a two-component form and is mixed in proportion by weight until use, so that the silicone coating is more stable to store and is cured more quickly compared with the commercially available one-component form coating.

The technical effects of the silicone coating and the preparation method thereof of the present invention are further described below with reference to specific examples, where unless otherwise specified, "parts" and "%" in the examples of the present invention are all "parts by weight" and "percent" are all mass percents; however, the specific implementation methods mentioned in these examples are only illustrative of the technical solutions of the present invention, and do not limit the implementation scope of the present invention.

Example 1

100 parts of vinyl silicone oil, 20 parts of methyl silicone oil, 10 parts of methyl vinyl silicone resin, 15 parts of modified white carbon black (vinyl tetramethyl disilazane treated fumed silica), 10 parts of high-temperature resistant auxiliary PF2, 50 parts of modified aluminum hydroxide (A171 modified aluminum hydroxide) and 25 parts of modified aluminum silicate fiber powder (A171 modified aluminum silicate fiber powder) are placed in a kneader to be mixed uniformly, then the materials are ground to the micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition to be stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 20 parts of methyl silicone oil, 10 parts of methyl vinyl silicone resin, 15 parts of modified white carbon black (vinyl tetramethyl disilazane treated fumed silica), 10 parts of high temperature resistant additive PF2, 50 parts of modified aluminum hydroxide (A171 modified aluminum hydroxide) and 25 parts of modified aluminum silicate fiber powder (A171 modified aluminum silicate fiber powder) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then heated and vacuumized for 1.5 hours, kept stand and cooled to obtain a second base material, 0.0002 part of ethynyl cyclohexanol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Example 2

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl titanium tristearate), 30 parts of modified aluminum silicate fiber powder (aluminum silicate fiber powder modified by KH 550) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition to be stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl titanium tristearate), 30 parts of modified aluminum silicate fiber powder (aluminum silicate fiber powder modified by KH 550) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then heated and vacuumized for 1.5 hours, kept stand and cooled to obtain a second base material, 0.0002 part of methyl butynol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Example 3

100 parts of vinyl silicone oil, 10 parts of methyl silicone oil, 15 parts of methyl vinyl silicone resin, 25 parts of modified white carbon black (chlorosilane-treated fumed silica), 5 parts of cerium oxide resistance, 40 parts of modified magnesium hydroxide (KH560 modified magnesium hydroxide) and 30 parts of modified wollastonite fiber powder (KH550 modified wollastonite fiber powder) are placed in a kneader and mixed uniformly, then the materials are ground to the micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and the materials are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition and stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 10 parts of methyl silicone oil, 15 parts of methyl vinyl silicone resin, 25 parts of modified white carbon black (chlorosilane-treated fumed silica), 5 parts of high-temperature-resistant cerium oxide, 40 parts of modified magnesium hydroxide (KH560 modified magnesium hydroxide), 30 parts of modified wollastonite fiber powder (KH550 modified wollastonite fiber powder) are placed in a kneader and mixed uniformly, the materials are ground to a micron level through a grinder, then the materials are heated and vacuumized for 1.5 hours, the mixture is kept stand and cooled to obtain a second base material, 0.0002 part of ethynyl cyclohexanol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Example 4

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by siloxane rings), 5 parts of high-temperature resistant additive PF2, 60 parts of modified magnesium hydroxide (magnesium hydroxide modified by isopropyl titanium tristearate), 30 parts of modified glass fiber powder (glass fiber powder modified by KH 560) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a first base material, 0.5 part of 5000PPM palladium complex is added into the first base material under the normal temperature condition to be stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by siloxane rings), 5 parts of high-temperature resistant additive PF2, 60 parts of modified magnesium hydroxide (magnesium hydroxide modified by isopropyl titanium tristearate), 30 parts of modified glass fiber powder (glass fiber powder modified by KH 560) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a second base material, 0.0002 part of methyl butinol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Example 5

100 parts of vinyl silicone oil, 15 parts of methyl vinyl silicone resin, 20 parts of modified white carbon black (chlorosilane-treated fumed silica), 10 parts of cerium oxide resistance, 50 parts of modified magnesium hydroxide (KH560 modified magnesium hydroxide) and 30 parts of modified wollastonite fiber powder (KH560 modified wollastonite fiber powder) are placed in a kneader and mixed uniformly, then the materials are ground to the micron level by a grinder, then the materials are heated and vacuumized for 1 hour, and the materials are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition and stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 15 parts of methyl vinyl silicone resin, 20 parts of modified white carbon black (chlorosilane-treated fumed silica), 10 parts of cerium oxide resistance, 50 parts of modified magnesium hydroxide (KH560 modified magnesium hydroxide), 30 parts of modified wollastonite fiber powder (KH560 modified wollastonite fiber powder) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1 hour, and are kept stand and cooled to obtain a second base material, 0.0002 part of ethynyl cyclohexanol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly, so that the component B is obtained.

Comparative example 1

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of unmodified white carbon black, 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl tristearate), 30 parts of modified aluminum silicate fiber powder (aluminum silicate fiber powder modified by KH 550) are placed in a kneader and mixed uniformly, then the materials are ground to the micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition and stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of unmodified white carbon black, 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl tristearate), 30 parts of modified aluminum silicate fiber powder (aluminum silicate fiber powder modified by KH 550) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, and are kept stand and cooled to obtain a second base material, 0.0002 part of methyl butinol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Comparative example 2

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of unmodified aluminum hydroxide and 30 parts of modified aluminum silicate fiber powder (KH550 modified aluminum silicate fiber powder) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, the materials are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition to be stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of unmodified aluminum hydroxide and 30 parts of modified aluminum silicate fiber powder (KH550 modified aluminum silicate fiber powder) are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, the mixture is kept stand and cooled to obtain a second base material, 0.0002 part of methyl butynol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

Comparative example 3

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl titanium tristearate), and 30 parts of unmodified aluminum silicate fiber powder are placed in a kneader to be mixed uniformly, the materials are ground to a micron level by a grinder, then the materials are heated and vacuumized for 1.5 hours, the materials are kept stand and cooled to obtain a first base material, and 0.5 part of 5000PPM platinum complex is added into the first base material under the normal temperature condition to be stirred uniformly to obtain a component A;

100 parts of vinyl silicone oil, 5 parts of methyl silicone oil, 20 parts of methyl vinyl phenyl silicone resin, 20 parts of modified white carbon black (precipitated white carbon black treated by hexamethyldisilazane), 5 parts of high-temperature resistant additive PF2, 60 parts of modified aluminum hydroxide (aluminum hydroxide modified by isopropyl titanium tristearate), and 30 parts of unmodified aluminum silicate fiber powder are placed in a kneader to be mixed uniformly, the materials are ground to a micron level through a grinder, then the materials are heated and vacuumized for 1.5 hours, the materials are kept stand and cooled to obtain a second base material, 0.0002 part of methyl butynol and 2 parts of hydrogen-containing silicone oil are added into the second base material under the normal temperature condition, and the mixture is stirred uniformly to obtain a component B.

The component A and the component B in examples 1-5 and comparative examples 1-3 of the invention are uniformly mixed according to the weight ratio of 1:1 respectively to obtain 8 groups (examples 1-5 and comparative examples 1-3) of organic silicon coatings, the 8 groups of organic silicon coatings are respectively sprayed on glass fiber cloth, and the following performance test analysis is carried out: (1) baking at 110 ℃ for 5 minutes, and observing the bonding strength of the organic silicon coating and the glass fiber cloth; (2) the thickness of the coating is 1.0mm, the coating is placed at 1200 ℃ for burning for 5 minutes, and the condition of residues is observed; (3) placing at 250 deg.C, carrying out 7-day high-temperature aging test, and observing surface crack of the coating; (4) curing at normal temperature for 3 hours, testing the oxygen index of the coating, and testing the flame retardant property based on UL test standard; (5) the thickness of the coating is 0.3mm, and the volume resistivity and the voltage are tested. The test results obtained are shown in table 1 below.

TABLE 1

In summary, as can be seen from table 1, the two-component silicone coating provided in the embodiments of the present invention, when in use, the silicone coating obtained by mixing the component a and the component B in a specific ratio has excellent and stable fire-retardant property, flame-retardant property and electrical property, has high adhesion strength with glass fiber cloth, is fired at 1200 ℃ for 5 minutes without falling off, and the residue after high-temperature firing is hard and does not fall off, and in addition, after being aged at 250 ℃ for 7 days at high temperature, the surface of the coating has no cracks, and the flame-retardant grade reaches V-0 as tested by UL test standard, and the withstand voltage is greater than 8 KV. In addition, the white carbon black, the aluminum hydroxide and the inorganic fiber powder subjected to the surface modification and hydrophobic treatment can be better dispersed in the organic silicon coating, the flame retardant property and the electrical property of the coating are effectively improved through uniform dispersion, and the fire resistance property of the coating is guaranteed.

In addition, the organic silicon coating provided by the embodiment of the invention is sprayed on the surfaces of plastics and fiber cloth, so that the flame retardant property of the product can be greatly improved; the coating has excellent electrical property, can be applied to fireproof busbar arrangement, adopts the traditional mode that the busbar is wrapped with mica tape at present, and can greatly improve the processing efficiency and reduce the volume of the assembled busbar by directly spraying the organic silicon coating. The organic silicon coating is sprayed on high-temperature-resistant high-silica glass fiber cloth, so that the electrical property of the glass fiber cloth can be improved, and the excellent high-temperature-resistant fireproof characteristic is guaranteed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.