CN113683955A - Composite organic silicon coating and preparation method and application thereof - Google Patents
Composite organic silicon coating and preparation method and application thereof Download PDFInfo
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Abstract
The application belongs to the technical field of coatings, and particularly relates to a composite organic silicon coating as well as a preparation method and application thereof. The application provides a composite organic silicon coating and a preparation method and application thereof; the composite organic silicon coating comprises hydroxyl silicone oil, dimethyl silicone oil, an inorganic filler, flame retardant powder, a cross-linking agent and a catalyst; the hydroxyl silicone oil comprises a first hydroxyl silicone oil and a second hydroxyl silicone oil; the viscosity of the first hydroxyl silicone oil is 1000-1500cps, the viscosity of the second hydroxyl silicone oil is 20000-30000cps, and the first hydroxyl silicone oil with low viscosity can improve the compatibility of the second hydroxyl silicone oil with high viscosity and the inorganic filler, so that the coating is more compact and is not easy to crack, thereby solving the technical problem that the corrosion resistance of the organic silicon coating in the prior art needs to be improved.
Description
Technical Field
The application belongs to the technical field of coatings, and particularly relates to a composite organic silicon coating as well as a preparation method and application thereof.
Background
In order to improve the performance of the organic silicon coating, some additional components are often added to the organic silicon coating, for example, CN201911135161.0 discloses a preparation method of an anticorrosion wear-resistant organic silicon coating, in which modified graphene is added to the organic silicon coating, and the modified graphene forms a hard protective layer, thereby improving the abrasion resistance of the coating and the corrosion resistance of the coating.
However, the addition of additional components to the silicone coating increases the raw material cost of the silicone coating, and also causes the preparation process to be complicated, thereby increasing the preparation cost of the silicone coating, and therefore, how to improve the performance of the silicone coating without adding additional components is a problem in the prior art.
Disclosure of Invention
In view of this, the application provides a composite organic silicon coating, and a preparation method and an application thereof, which can solve the technical problem that the corrosion resistance of the organic silicon coating needs to be improved in the prior art.
The first aspect of the application provides a composite organic silicon coating, wherein the components of the composite organic silicon coating comprise hydroxyl silicone oil, dimethyl silicone oil, inorganic filler, flame retardant powder, a cross-linking agent and a catalyst;
the hydroxyl silicone oil comprises a first hydroxyl silicone oil and a second hydroxyl silicone oil;
the viscosity of the first hydroxyl silicone oil is 1000-1500 cps;
the viscosity of the second hydroxyl silicone oil is 20000-30000 cps.
Preferably, the components of the composite organic silicon coating further comprise hydrogen-terminated silicone oil.
It is noted that the terminal hydrogen-containing silicone oil can be used as an effective supplementary ingredient for the block of the silicone oil polymer, so that the strength of the three-dimensional cross-linked network structure is improved, and the three-dimensional cross-linked network in the composite organic silicon coating can show a better seawater corrosion resistance effect.
Preferably, the components of the composite organic silicon coating further comprise a silane coupling agent and a solvent.
It is noted that the silane coupling agent can further improve the compatibility between inorganic and organic components in the composite organosilicon coating, so that the coating of the composite organosilicon coating is more compact and has strong seawater corrosion resistance.
Preferably, the inorganic filler includes at least one of nano calcium carbonate, hydrophobic white carbon black, barium sulfate and titanium dioxide.
Preferably, the flame-retardant powder includes at least one of aluminum hydroxide, magnesium hydroxide, and zinc oxide.
Preferably, the cross-linking agent consists of methyl tributyrinoxime silane and tetrabutoximino silane.
Preferably, the catalyst includes a platinum-gold catalyst and an organotin catalyst.
Preferably, the silane coupling agent comprises methylvinylbis (N-methylacetamido) silane.
Preferably, the solvent comprises at least one of solvent oil No. 120, No. 150 and No. 200.
Preferably, the mass ratio of the first hydroxyl silicone oil to the second hydroxyl silicone oil in the hydroxyl silicone oil is 1: 3-5.
Preferably, the dimethicone has a viscosity of 100-1000 cps.
Preferably, the hydrogen mole content of the hydrogen-terminated silicone oil is 0.3-0.5%.
Preferably, the mass percent of the methyl tributyrinoxime silane in the cross-linking agent is 40-60%, and the mass percent of the tetrabutoxime silane is 40-60%.
Preferably, the components of the composite organic silicon coating comprise the following components in parts by mass:
20-40 parts of hydroxyl silicone oil;
5-8 parts of dimethyl silicone oil;
2-3 parts of hydrogen-terminated silicone oil
0.5-2 parts of nano calcium carbonate;
1-5 parts of hydrophobic white carbon black;
5-15 parts of flame retardant powder;
1-3 parts of a crosslinking agent;
1-3 parts of a silane coupling agent;
0.01-0.05 part of a catalyst;
100-150 parts of a solvent.
The second aspect of the application provides a preparation method of a composite organic silicon coating, which comprises the following steps:
the method comprises the following steps: stirring hydroxyl silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, a catalyst and solvent oil to obtain an organic silicon mixed solution;
step two: adding a cross-linking agent into the organic silicon mixed solution, vacuumizing, stirring and heating;
the stirring and heating time is 1-2 h;
the stirring and heating temperature is 50-60 ℃.
Preferably, the first step specifically comprises stirring hydroxyl silicone oil, hydrogen-terminated silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, a catalyst and solvent oil to obtain an organic silicon mixed solution;
preferably, the second step specifically includes adding the crosslinking agent and the silane coupling agent into the organosilicon mixed solution, then vacuumizing, stirring and heating.
Preferably, the first step further comprises dehydrating hydroxyl silicone oil, hydrogen-terminated silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, a catalyst, solvent oil, a crosslinking agent and a silane coupling agent.
It should be noted that, in order to avoid the poor quality of the polymerized product composite organosilicon coating caused by the excessively fast polymerization reaction speed, the reaction speed needs to be controlled by controlling the polymerization reaction temperature, and the polymerization reaction temperature is 50-60 ℃, so that moisture in each raw material in the composite organosilicon coating cannot be removed, and the polymerized product composite organosilicon coating contains moisture, on one hand, the moisture can corrode the coating formed by curing the coating from the inside, and on the other hand, the presence of the moisture also softens the three-dimensional cross-linked network of the composite organosilicon coating, so that the hardness of the coating formed by curing the composite organosilicon coating is reduced, and the corrosion resistance is reduced.
In a third aspect of the application, the application of the composite organic silicon coating or the composite organic silicon coating prepared by the preparation method in the field of seawater corrosion prevention is provided.
The composite organic silicon coating provided by the application has good compactness and corrosion components are not easy to permeate after being cured into a coating film, so that the composite organic silicon coating is suitable for the field of seawater corrosion prevention.
In summary, the present application provides a composite organosilicon coating, a preparation method and applications thereof; the composite organic silicon coating comprises hydroxyl silicone oil, dimethyl silicone oil, an inorganic filler, flame retardant powder, a cross-linking agent and a catalyst; the hydroxyl silicone oil comprises a first hydroxyl silicone oil and a second hydroxyl silicone oil; the viscosity of the first hydroxyl silicone oil is 1000-1500cps, the viscosity of the second hydroxyl silicone oil is 20000-30000cps, the fluidity of the high-viscosity hydroxyl silicone oil is poor, so that the first hydroxyl silicone oil is difficult to be compatible with each component of the composite organic silicon coating, after a coating is prepared, the coating is easy to crack, and the coating is poor in compactness, after the low-viscosity first hydroxyl silicone oil is added into the composite organic silicon coating, the viscosity of the first hydroxyl silicone oil is 1000-1500cps, the polymerization degree is low, so that the high-viscosity first hydroxyl silicone oil can be subjected to further polymerization reaction with the high-viscosity second hydroxyl silicone oil under the action of a catalyst and a cross-linking agent to form a high-viscosity polymer with a three-dimensional cross-linked network, and during the polymerization process, the dimethyl silicone oil, the inorganic filler and the flame-retardant powder can be covered in the three-dimensional cross-linked network structure, so that each component of the composite organic silicon coating is compatible, and is not easy to crack after the coating is prepared, the compactness of the coating is good, thereby solving the technical problem that the corrosion resistance of the organic silicon coating in the prior art needs to be improved.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flow chart of the present application for preparing a composite silicone coating.
The specific implementation mode is as follows:
the application provides a composite organic silicon coating and a preparation method and application thereof, which can solve the technical problem that the corrosion resistance of the composite organic silicon coating in the prior art needs to be improved.
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The reagents or raw materials used in the following examples are commercially available or self-made.
Example 1
This example 1 provides a preparation method of a first composite silicone coating, including the following steps:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: 30g of hydroxyl silicone oil, 6g of dimethyl silicone oil, 1g of nano calcium carbonate, 2.5g of hydrogen-containing end silicone oil, 10g of flame retardant powder, 3g of hydrophobic white carbon black, 0.03g of catalyst and 100g of No. 120 solvent oil are put into a planetary barrel and stirred and dispersed uniformly;
step three: adding 2g of cross-linking agent and 1g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 1.5h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 1000cps and the hydroxyl silicone oil with the hydroxyl content of 0.2 percent and dihydroxyl end capping of 20000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl end capping hydroxyl silicone oil is 1: 4; the viscosity of the dimethicone is 500 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.4 percent; the cross-linking agent consists of the following components in percentage by weight: 50% of methyl tributyrinoxime silane; 50% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 120 solvent naphtha.
Example 2
This example 2 provides a preparation method of a second composite silicone coating, including the following steps:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: 20g of hydroxyl silicone oil, 8g of dimethyl silicone oil, 2g of nano calcium carbonate, 2g of hydrogen-containing end silicone oil, 15g of flame retardant powder, 1g of hydrophobic white carbon black, 0.03g of catalyst and 100g of No. 120 solvent oil are added into a planetary barrel, and the mixture is stirred and dispersed uniformly;
step three: adding 1g of cross-linking agent and 1g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 1.5h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 1500cps and hydroxyl silicone oil with the hydroxyl content of 0.15 percent and dihydroxyl end capping of 20000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl end capping hydroxyl silicone oil is 1: 3; the viscosity of the dimethicone was 350 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.3 percent; the cross-linking agent consists of the following components in percentage by weight: 50% of methyl tributyrinoxime silane; 50% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 120 solvent naphtha.
Example 3
This example 3 provides a preparation method of a third composite silicone coating, comprising the following steps:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: adding 40g of hydroxyl silicone oil, 5g of dimethyl silicone oil, 0.5g of nano calcium carbonate, 3g of hydrogen-containing end silicone oil, 5g of flame retardant powder, 5g of hydrophobic white carbon black, 0.05g of catalyst and 100g of No. 120 solvent oil into a planetary barrel, and stirring and dispersing uniformly;
step three: adding 3g of cross-linking agent and 2g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 2h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 1500cps and hydroxyl terminated silicone oil with the hydroxyl content of 0.15 percent and dihydroxyl terminated hydroxyl silicone oil with the hydroxyl content of 30000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl terminated hydroxyl silicone oil is 1: 3; the viscosity of the dimethicone was 1000 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.5 percent; the cross-linking agent consists of the following components in percentage by weight: 40% of methyl tributyl ketoxime silane; 60% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 120 solvent naphtha.
Example 4
This example 4 provides a fourth method for preparing a composite silicone coating, comprising the steps of:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: adding 25g of hydroxyl silicone oil, 7g of dimethyl silicone oil, 2g of nano calcium carbonate, 2.5g of hydrogen-terminated silicone oil, 8g of flame retardant powder, 4g of hydrophobic white carbon black, 0.02g of catalyst and 100g of No. 150 solvent oil into a planetary barrel, and stirring and dispersing uniformly;
step three: adding 3g of cross-linking agent and 1g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 1.5h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 0.2% and dihydroxyl-terminated hydroxyl silicone oil with the hydroxyl content of 25000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl-terminated hydroxyl silicone oil is 1: 4; the viscosity of the dimethicone is 500 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.3 percent; the cross-linking agent consists of the following components in percentage by weight: 40% of methyl tributyl ketoxime silane; 60% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 150 solvent naphtha.
Example 5
This example 5 provides a fifth preparation method of a composite silicone coating, including the following steps:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: adding 35g of hydroxyl silicone oil, 6g of dimethyl silicone oil, 1g of nano calcium carbonate, 2.5g of hydrogen-terminated silicone oil, 11g of flame retardant powder, 2g of hydrophobic white carbon black, 0.04g of catalyst and 100g of No. 150 solvent oil into a planetary barrel, and uniformly stirring and dispersing;
step three: adding 2g of cross-linking agent and 1.5g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 2h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 1500cps and hydroxyl terminated silicone oil with the hydroxyl content of 0.15 percent and dihydroxyl terminated hydroxyl silicone oil with the hydroxyl content of 30000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl terminated hydroxyl silicone oil is 1: 3; the viscosity of the dimethicone was 1000 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.3 percent; the cross-linking agent consists of the following components in percentage by weight: 40% of methyl tributyl ketoxime silane; 60% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 150 solvent naphtha.
Example 6
This example 6 provides a sixth method for preparing a composite silicone coating, comprising the following steps:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: 30g of hydroxyl silicone oil, 8.5g of dimethyl silicone oil, 1g of nano calcium carbonate, 10g of flame retardant powder, 3g of hydrophobic white carbon black, 0.03g of catalyst and 100g of No. 120 solvent oil are put into a planetary barrel and stirred and dispersed uniformly;
step three: adding 2g of cross-linking agent and 1g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 1.5h to complete the reaction.
The hydroxyl silicone oil consists of low-viscosity hydroxyl silicone oil with the hydroxyl content of 1000cps and the hydroxyl silicone oil with the hydroxyl content of 0.2 percent and dihydroxyl end capping of 20000cps, wherein the weight ratio of the low-viscosity hydroxyl silicone oil to the dihydroxyl end capping hydroxyl silicone oil is 1: 4; the viscosity of the dimethicone is 500 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.4 percent; the cross-linking agent consists of the following components in percentage by weight: 50% of methyl tributyrinoxime silane; 50% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 120 solvent naphtha.
Comparative example 1
This comparative example 1 provides a method of preparing a composite silicone coating that does not contain both high and low viscosities, comprising the steps of:
the method comprises the following steps: dehydrating the raw materials to a water content of less than 0.3 wt%;
step two: 30g of hydroxyl silicone oil, 6g of dimethyl silicone oil, 1g of nano calcium carbonate, 2.5g of hydrogen-containing end silicone oil, 10g of flame retardant powder, 3g of hydrophobic white carbon black, 0.03g of catalyst and 100g of No. 120 solvent oil are put into a planetary barrel and stirred and dispersed uniformly;
step three: adding 2g of cross-linking agent and 1g of silane coupling agent, vacuumizing, and heating to 50-60 ℃; stirring was continued for 1.5h to complete the reaction.
Wherein the hydroxyl silicone oil is a dihydroxyl terminated hydroxyl silicone oil with 20000cps, and the viscosity of the dimethyl silicone oil is 350 cps; the hydrogen molar content of the hydrogen-terminated silicone oil is 0.4 percent; the cross-linking agent consists of the following components in percentage by weight: 50% of methyl tributyrinoxime silane; 50% of tetrabutylketoxime silane; the silane coupling agent is methyl vinyl bis (N-methyl acetamido) silane, the flame retardant powder is aluminum hydroxide, the catalyst is platinum catalyst, and the solvent is No. 120 solvent naphtha.
Example 7
Example 7 is to examine the properties of the composite silicone coatings prepared in examples 1, 4, 6 and comparative example 1.
Coating the composite organic silicon coatings prepared in the examples 1, 4, 6 and 1 on a copper substrate, and detecting the hardness and acid and alkali resistance of a paint film after the coatings are cured to form a film; the detection results are shown in table one.
As can be understood from table one, compared with the composite silicone coating disclosed in examples 1, 4 and 6, which contains both low-viscosity hydroxyl silicone oil and high-viscosity hydroxyl silicone oil, the composite silicone coating disclosed in comparative example 1 only contains high-viscosity hydroxyl silicone oil, and after curing to form a paint film, the composite silicone coating disclosed in comparative example 1 has lower acid and alkali resistance than the composite silicone coating containing both low-viscosity hydroxyl silicone oil and high-viscosity hydroxyl silicone oil, which shows that under the action of a catalyst and a cross-linking agent, the low-viscosity hydroxyl silicone oil can undergo a further polymerization reaction with the high-viscosity second hydroxyl silicone oil to form a high-viscosity polymer with a three-dimensional cross-linked network, and during the polymerization process, the dimethyl silicone oil, the inorganic filler and the flame retardant powder can be covered in the three-dimensional cross-linked network structure, so as to make the components of the composite silicone coating compatible, after the coating film is prepared, the coating film is not easy to crack, the compactness of the coating is good, and the corrosion resistance of the composite organic silicon coating after the coating film is prepared is improved.
Further, it can be understood from the table one that, compared with the composite silicone coating disclosed in the embodiments 1 and 4 and containing both the hydroxyl silicone oil and the terminal hydrogen-containing silicone oil, the composite silicone coating disclosed in the embodiment 6 does not contain the terminal hydrogen-containing silicone oil, and the acid and alkali resistance is lower, which indicates that the terminal hydrogen-containing silicone oil is an effective component for forming a three-dimensional cross-linked network by blocking a silicone oil polymer, so that the strength of the three-dimensional cross-linked network structure is improved, and the cross-linked network of the silicone oil polymer can show a better seawater corrosion resistance effect.
Watch 1
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The composite organic silicon coating is characterized by comprising the components of hydroxyl silicone oil, dimethyl silicone oil, inorganic filler, flame retardant powder, a cross-linking agent and a catalyst;
the hydroxyl silicone oil comprises a first hydroxyl silicone oil and a second hydroxyl silicone oil;
the viscosity of the first hydroxyl silicone oil is 1000-1500 cps;
the viscosity of the second hydroxyl silicone oil is 20000-30000 cps.
2. The composite silicone coating of claim 1, wherein the components of the composite silicone coating further comprise hydrogen terminated silicone oil.
3. The composite silicone coating of claim 1, wherein the components of the composite silicone coating further comprise a silane coupling agent and a solvent.
4. The composite organosilicon coating of claim 1, wherein the inorganic filler comprises at least one of nano calcium carbonate, hydrophobic white carbon, barium sulfate, and titanium dioxide.
5. The composite silicone coating according to claim 3, wherein the components of the composite silicone coating comprise, in parts by mass:
20-40 parts of hydroxyl silicone oil;
5-8 parts of dimethyl silicone oil;
2-3 parts of hydrogen-terminated silicone oil
0.5-2 parts of nano calcium carbonate;
1-5 parts of hydrophobic white carbon black;
5-15 parts of flame retardant powder;
1-3 parts of a crosslinking agent;
1-3 parts of a silane coupling agent;
0.01-0.05 part of a catalyst;
100-150 parts of a solvent.
6. The preparation method of the composite organic silicon coating is characterized by comprising the following steps:
the method comprises the following steps: stirring hydroxyl silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, a catalyst and solvent oil to obtain an organic silicon mixed solution;
step two: adding a cross-linking agent into the organic silicon mixed solution, vacuumizing, stirring and heating;
the stirring and heating time is 1-2 h;
the stirring and heating temperature is 50-60 ℃.
7. The preparation method of the composite organosilicon coating according to claim 6, wherein the first step specifically comprises: hydroxyl silicone oil, hydrogen-terminated silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, a catalyst and solvent oil are stirred to obtain an organic silicon mixed solution.
8. The preparation method of the composite silicone coating according to claim 6, wherein the second step specifically comprises: and adding a cross-linking agent and a silane coupling agent into the organic silicon mixed solution, vacuumizing, stirring and heating.
9. The preparation method of the composite organosilicon coating according to claim 8, wherein the first step further comprises dehydrating hydroxyl silicone oil, hydrogen-terminated silicone oil, dimethyl silicone oil, nano calcium carbonate, flame retardant powder, hydrophobic white carbon black, catalyst, solvent oil, crosslinking agent and silane coupling agent.
10. Use of the composite organosilicon coating prepared by the method of any one of claims 1-5 or 6-9 in the field of seawater corrosion prevention.
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| CN202111176891.2A CN113683955A (en) | 2021-10-09 | 2021-10-09 | Composite organic silicon coating and preparation method and application thereof |
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