CN113667399A - Flexible thermal protection coating, flexible thermal protection coating for ethylene propylene rubber and preparation method of flexible thermal protection coating - Google Patents
Flexible thermal protection coating, flexible thermal protection coating for ethylene propylene rubber and preparation method of flexible thermal protection coating Download PDFInfo
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Abstract
The invention discloses a flexible thermal protection coating, a flexible thermal protection coating for ethylene propylene rubber and a preparation method thereof, belonging to the technical field of thermal protection coatings, wherein room-temperature vulcanized silicone rubber can keep elasticity for a long time within the temperature range of-65-250 ℃, hydrogen-containing silicone oil can be crosslinked to form a film at low temperature and is often used as a softener, and hydroxyl groups in the silicone rubber and active silicon hydrogen bonds of the hydrogen-containing silicone oil react under the action of a catalyst to form a crosslinking system with very good flexibility. The methyl hydrogen-containing silicone oil and the room temperature vulcanized silicone rubber are matched for use, so that the flexibility of a single silicone rubber coating can be improved, and the coating has outstanding performance in the aspect of flexibility by adjusting the proportion of the cross-linking agent and the catalyst, and can be well adapted to the surface of ethylene propylene rubber.
Description
Technical Field
The invention belongs to the technical field of heat-proof coatings, and relates to a flexible heat-proof coating, a flexible heat-proof coating for ethylene propylene rubber and a preparation method thereof.
Background
The ethylene propylene diene monomer main chain consists of stable saturated hydrocarbon, only contains unsaturated double bonds in a side chain, and belongs to saturated rubber; due to the electrodeless substituent in the molecular structure, the intermolecular cohesive energy is low, the molecular chain can keep flexibility in a wider temperature range, and the vulcanized product has excellent performance due to the unique chemical structure. Therefore, the ethylene propylene rubber has the precious performances of excellent weather resistance, ozone resistance, electric insulation, low compression set, high strength, high elongation and the like, so that the application is extremely wide, and the consumption is increased year by year. However, the ethylene propylene rubber has a general high temperature resistance, and is difficult to use in a special high temperature environment, and the surface needs to be subjected to thermal protection treatment to adapt to the high temperature environment.
Thermal protective coatings need to have low thermal conductivity and high temperature structural stability, and to have good interfacial bonding properties with the substrate. The silicon rubber as a novel material has the advantages of high temperature resistance, corrosion resistance, light weight, good flexibility, easy processing and the like, and can be used as a thermal protection coating. However, because the molecular structure of ethylene propylene rubber lacks active groups, the cohesive energy is low, the self-adhesion and the mutual adhesion are poor, and the ethylene propylene rubber is difficult to be combined with the thermal protection coating, in order to solve the problem, the technical improvement on the silicon rubber thermal protection coating is needed, the flexibility and the adhesion of the coating are improved, meanwhile, the surface treatment is carried out on the coating, the surface adhesion is increased, and the firm combination with the silicon rubber thermal protection coating is realized.
Disclosure of Invention
The invention aims to overcome the defect that ethylene propylene rubber is difficult to combine with a thermal protection coating so that the ethylene propylene rubber is difficult to have flexibility and thermal protection capability at the same time in the prior art, and provides a flexible thermal protection coating, a flexible thermal protection coating for ethylene propylene rubber and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a flexible thermal protection coating comprises the following components in parts by weight: 60-70 parts of a film forming material, 15-30 parts of a filler, 20-30 parts of an organic solvent, a crosslinking agent, a catalyst and a coupling agent, wherein the sum of the mass parts of the crosslinking agent, the catalyst and the coupling agent is 3-6 parts.
Preferably, the film forming material consists of methyl hydrogen silicone oil and vulcanized silicone rubber;
the filler is hollow glass microspheres and/or light nano-materials;
the organic solvent is industrial heptane or solvent rosin water.
Preferably, the vulcanized silicone rubber is room temperature vulcanized silicone rubber;
the light nano material is silica aerogel or alumina aerogel.
Preferably, the hollow glass microspheres have a diameter of no more than 200 μm;
the mass ratio of the methyl hydrogen-containing silicone oil to the vulcanized silicone rubber is (1-3): 10.
preferably, the cross-linking agent is any one of ethyl orthosilicate, methyl triethoxysilane and alkoxy titanium compound;
the catalyst is any one of dibutyl tin dilaurate, dioctyl tin dilaurate, dibutyltin diacetate and dioctyl tin diacetate;
the coupling agent is any one of silane coupling agent, titanate coupling agent and bimetallic coupling agent.
Preferably, the mass ratio of the cross-linking agent to the catalyst to the coupling agent is (3-5): (0.3-1): (0.5 to 1).
Preferably, mica powder is further added into the flexible thermal protection coating, and the mass ratio of the mica powder to the filler is 1: 10.
the flexible thermal protection coating for the ethylene propylene rubber prepared based on the flexible thermal protection coating has the thermal conductivity of 0.05-0.1W/(m.K) and the temperature resistance of 450-470 ℃.
A preparation method of the flexible thermal protection coating for the ethylene propylene rubber comprises the following steps:
firstly, brushing a primer on the surface of ethylene propylene rubber;
then spraying flexible thermal protection coating on the surface of the primer, and forming a flexible thermal protection coating after curing;
wherein the primer is prepared from tetraethoxysilane, gamma-methacryloxypropyltrimethoxysilane and butylvinyltriethoxysilane according to the mass ratio of 2: 5: 3, mixing and preparing.
Preferably, the curing conditions are:
when the curing temperature is 20-35 ℃, the curing time is 24-48 h;
when the curing temperature is 110-130 ℃, the curing time is 2-6 h.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a flexible thermal protection coating, wherein room temperature vulcanized silicone rubber can keep elasticity for a long time within the temperature range of-65-250 ℃, hydrogen-containing silicone oil can be crosslinked to form a film at low temperature and is often used as a softener, and hydroxyl in the silicone rubber and active silicon hydrogen bonds of the hydrogen-containing silicone oil react under the action of a catalyst to form a crosslinking system with very good flexibility. The methyl hydrogen-containing silicone oil and the room temperature vulcanized silicone rubber are matched for use, so that the flexibility of a single silicone rubber coating can be improved, and the coating has outstanding performance in the aspect of flexibility by adjusting the proportion of the cross-linking agent and the catalyst, and can be well adapted to the surface of ethylene propylene rubber.
Furthermore, the light nano material is silica aerogel or alumina aerogel, the aerogel in the coating plays a role in blocking gas convection and solid phase heat conduction, and the aerogel filler amount is 15-20% of the total filler amount.
Further, the vulcanized silicone rubber is room temperature vulcanized silicone rubber; the crosslinking can be realized at room temperature, and the coating can keep elasticity for a long time within the temperature range of-65-250 ℃.
Further, the diameter of the hollow glass microsphere is not more than 200 μm; the coating plays a main heat insulation role and accounts for 60-100% of the total mass of the filler.
Furthermore, mica powder is added into the flexible thermal protection coating, and the flaky mica powder is used as a high-temperature-resistant heat-insulating filler, so that the temperature resistance of the coating can be improved.
The invention also discloses a flexible thermal protection coating for ethylene propylene rubber, and experiments show that the thermal conductivity of the flexible thermal protection coating is 0.05-0.1W/(m.K), the temperature resistance is 450-470 ℃, and the problem that ethylene propylene rubber is difficult to combine with the thermal protection coating and is difficult to have flexibility and thermal protection capability at the same time can be solved. Namely, the flexible thermal protection coating prepared by the invention has good flexibility, lower cost and excellent high-temperature-resistant and thermal-insulating comprehensive performance.
The invention also discloses a preparation method of the flexible thermal protection coating for the ethylene propylene rubber, which can improve the bonding property of the surface of the ethylene propylene rubber by using the primer and enhance the bonding force between the surface and the coating; the thermal protection coating has the advantages of simple preparation process, capability of realizing room temperature curing, good interface bonding performance with a matrix, strong adhesive force with the surface of ethylene propylene rubber, firm bonding, difficult peeling, and excellent high-temperature resistance and heat insulation comprehensive performance.
Drawings
FIG. 1 is a graph comparing the back temperature curves of ethylene propylene rubber (A) and the ethylene propylene rubber spray flexible thermal protective coating (B) prepared in example 1;
FIG. 2 is a graph comparing the back temperature curves of ethylene propylene rubber (A) and the ethylene propylene rubber spray flexible thermal protective coating (C) prepared in example 2;
FIG. 3 is a graph comparing the back temperature curves of ethylene propylene rubber (A) and the ethylene propylene rubber spray flexible thermal protective coating (D) prepared in example 3.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example 1
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 60g of methyl phenyl silicone rubber, 6g of methyl hydrogen silicone oil, 15g of hollow glass microspheres, 20g of 120# solvent (industrial heptane), 3g of ethyl orthosilicate, 0.5g of dibutyltin dilaurate and 0.5g of silane coupling agent. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
Carrying out oil removal treatment on the surface of the ethylene propylene rubber, and brushing a primer, wherein the primer is prepared from tetraethoxysilane, gamma-methacryloxypropyltrimethoxysilane and butylvinyltriethoxysilane according to the mass ratio of 2: 5: 3, mixing and preparing. The ethylene propylene rubber is sprayed with the required thickness of 1mm by an air spraying process (the specific examples in the present invention refer to specific application tests, so that the specific thickness values are suggested and increased by the same way in the following examples), and the ethylene propylene rubber is cured at room temperature of 30 ℃ for 24h to finally obtain the flexible thermal protective coating.
Example 2
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 50g of methyl diphenyl silicone rubber, 10g of methyl hydrogen-containing silicone oil, 25g of hollow glass microspheres, 25g of 120# solvent, 3.5g of tetraethoxysilane, 0.3g of dioctyltin diacetate, 0.5g of silane coupling agent and 2.5g of mica powder. Mixing the film forming material, the filler, the organic solvent, the coupling agent and the mica powder, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
Carrying out oil removal treatment on the surface of the ethylene propylene rubber, and brushing a primer, wherein the primer is prepared from tetraethoxysilane, gamma-methacryloxypropyltrimethoxysilane and butylvinyltriethoxysilane according to the mass ratio of 2: 5: 3, mixing and preparing. And (3) spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing for 48 hours at the room temperature of 25 ℃ to finally obtain the flexible thermal protection coating.
Example 3
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 50g of methyl phenyl silicone rubber, 15g of methyl hydrogen-containing silicone oil, 20g of hollow glass microspheres, 30g of 120# solvent, 4.0g of tetraethoxysilane, 0.5g of dibutyltin diacetate and 0.5g of titanate coupling agent. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and heating and curing at 120 ℃ for 4h to finally obtain the flexible thermal protection coating.
Example 4
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 60g of methyl phenyl silicone rubber, 10g of methyl hydrogen silicone oil, 18g of hollow glass microspheres, 5g of silica aerogel, 27g of 120# solvent, 5g of methyl triethoxysilane, 0.3g of dioctyltin dilaurate, 0.5g of silane coupling agent and 2.3g of mica powder. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing at the room temperature of 20 ℃ for 24 hours to finally obtain the flexible thermal protection coating.
Example 5
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 55g of methyl phenyl silicone rubber and 7g of methyl hydrogen silicone oil. 17g of silica aerogel, 20g of rosin water, 4.5g of methyltriethoxysilane, 0.7g of dioctyltin diacetate and 0.5g of titanate coupling agent. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing for 6 hours at 110 ℃ to finally obtain the flexible thermal protection coating.
Example 6
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 58g of methyl phenyl silicone rubber and 8g of methyl hydrogen silicone oil. 15g of hollow glass microspheres, 22g of rosin water, 3.2g of alkoxy titanium compound, 0.7g of dibutyltin diacetate and 1g of bimetallic coupling agent (aluminum-zirconate coupling agent). Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing at room temperature for 24 hours to finally obtain the flexible thermal protection coating.
Example 7
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 60g of methyl phenyl silicone rubber and 8g of methyl hydrogen-containing silicone oil. 28g of alumina aerogel, 17g of rosin water, 3.8g of methyltriethoxysilane, 1.0g of dioctyltin dilaurate and 1.0g of titanate coupling agent. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing for 2 hours at 130 ℃ to finally obtain the flexible thermal protection coating.
Example 8
Firstly, the flexible thermal protection coating for ethylene propylene rubber comprises the following raw materials in proportion: 57g of methyl phenyl silicone rubber and 13g of methyl hydrogen silicone oil. 23g of alumina aerogel, 26g of rosin water, 4.2g of tetraethoxysilane, 0.6g of dibutyl tin dilaurate and 0.8g of silane coupling agent. Mixing the film forming material, the filler, the organic solvent and the coupling agent, stirring for 15-20 min by using a high-speed dispersion machine at the rotating speed of 1000r/min, adding the crosslinking agent and the catalyst, and quickly and uniformly stirring to obtain the flexible thermal protection coating.
And (3) carrying out oil removal treatment on the surface of the ethylene propylene rubber, brushing a primer, spraying 1mm on the surface of the ethylene propylene rubber by adopting an air spraying process, and curing for 32 hours at the room temperature of 30 ℃ to finally obtain the flexible thermal protection coating.
The flexible thermal protective coatings prepared in the above examples were characterized and the results are shown in table 1.
TABLE 1 Performance characterization results for the flexible protective coatings prepared in the examples
| Examples | Thermal conductivity | Elongation at break | High temperature resistance |
| Example 1 | 0.08W/(m·K) | 200％ | Does not swell and fall off at 450 DEG C |
| Example 2 | 0.07W/(m·K) | 170％ | Does not swell and fall off at 470 DEG C |
| Example 3 | 0.06W/(m·K) | 165％ | Does not swell and fall off at 450 DEG C |
| Example 4 | 0.06W/(m·K) | 190％ | Does not swell and fall off at 450 DEG C |
| Example 5 | 0.07W/(m·K) | 170％ | Does not swell and fall off at 455 DEG C |
| Example 6 | 0.06W/(m·K) | 190％ | 46Does not swell and fall off at 0 DEG C |
| Example 7 | 0.07W/(m·K) | 165％ | No swelling and no falling at 465 DEG C |
| Example 8 | 0.06W/(m·K) | 185％ | Does not swell and fall off at 455 DEG C |
As can be seen from the above table, the thermal conductivity of the flexible thermal protection coating prepared in the above embodiment is 0.05-0.1W/(m.K), the coating does not swell and fall off at 450-470 ℃, and the elongation at break is 100% -200%. The result shows that the flexible thermal protection coating prepared by the invention has good flexibility, lower cost and excellent high-temperature-resistant and heat-insulating comprehensive performance.
Meanwhile, the back temperature test is performed on the single ethylene propylene rubber and the ethylene propylene rubber coated with the flexible thermal protection coating prepared in the embodiments 1 to 3, and the results are shown in fig. 1, fig. 2 and fig. 3, and it can be known from the results in fig. 1 that the back temperature of the single ethylene propylene rubber rises rapidly in an environment where the test heat source is 450 ℃, the back temperature test cannot be performed when the structure of the ethylene propylene rubber is damaged at a temperature close to 300 ℃, and the back temperature rises slowly when the flexible thermal protection coating is sprayed for 1mm, so that the service life of the ethylene propylene rubber in a high-temperature environment can be prolonged.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A flexible thermal protection coating is characterized by comprising the following components in parts by mass: 60-70 parts of a film forming material, 15-30 parts of a filler, 20-30 parts of an organic solvent, a crosslinking agent, a catalyst and a coupling agent, wherein the sum of the mass parts of the crosslinking agent, the catalyst and the coupling agent is 3-6 parts.
2. The flexible thermal protective coating of claim 1 wherein the film former is comprised of methyl hydrogen silicone oil and silicon sulfide rubber;
the filler is hollow glass microspheres and/or light nano-materials;
the organic solvent is industrial heptane or rosin water.
3. The flexible thermal protective coating of claim 2 wherein the silicone sulfide rubber is a room temperature silicone sulfide rubber;
the light nano material is silica aerogel or alumina aerogel.
4. Flexible thermal protective coating according to claim 2,
the diameter of the hollow glass microsphere is not more than 200 mu m;
the mass ratio of the methyl hydrogen-containing silicone oil to the vulcanized silicone rubber is (1-3): 10.
5. the flexible thermal protective coating of claim 1, wherein the cross-linking agent is any one of ethyl orthosilicate, methyl triethoxysilane, and alkoxy titanium compound;
the catalyst is any one of dibutyl tin dilaurate, dioctyl tin dilaurate, dibutyltin diacetate and dioctyl tin diacetate;
the coupling agent is any one of silane coupling agent, titanate coupling agent and bimetallic coupling agent.
6. The flexible thermal protective coating according to claim 1, wherein the mass ratio of the cross-linking agent to the catalyst to the coupling agent is (3-5): (0.3-1): (0.5 to 1).
7. The flexible thermal protection coating according to claim 1, further comprising mica powder, wherein the mass ratio of the mica powder to the filler is 1: 10.
8. a flexible thermal protection coating for ethylene propylene rubber prepared based on the flexible thermal protection coating of any one of claims 1 to 7, characterized in that the thermal conductivity of the flexible thermal protection coating is 0.05 to 0.1W/(m.K), and the temperature resistance is 450 to 470 ℃.
9. A preparation method of the flexible thermal protection coating for ethylene propylene rubber as claimed in claim 8, characterized by comprising the following steps:
firstly, brushing a primer on the surface of ethylene propylene rubber;
then spraying flexible thermal protection coating on the surface of the primer, and forming a flexible thermal protection coating after curing;
wherein the primer is prepared from tetraethoxysilane, gamma-methacryloxypropyltrimethoxysilane and butylvinyltriethoxysilane according to the mass ratio of 2: 5: 3, mixing and preparing.
10. The method of preparing a flexible thermal protective coating according to claim 9, wherein the curing conditions are:
when the curing temperature is 20-35 ℃, the curing time is 24-48 h;
when the curing temperature is 110-130 ℃, the curing time is 2-6 h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350257A (en) * | 2022-01-10 | 2022-04-15 | 中国科学院兰州化学物理研究所 | Flexible coating material and preparation method and application thereof |
| CN115074025A (en) * | 2022-08-11 | 2022-09-20 | 陕西天蓝新材料科技有限公司 | Thermal insulation coating for bullet, preparation method and thermal insulation coating |
| CN115975461A (en) * | 2023-02-28 | 2023-04-18 | 信和新材料（苏州）有限公司 | Heat-insulating anti-condensation coating, and preparation method and application thereof |
| CN116262866A (en) * | 2021-12-14 | 2023-06-16 | 辽宁省轻工科学研究院有限公司 | High-temperature-resistant ablation-resistant thermal protection coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030104231A1 (en) * | 2001-11-09 | 2003-06-05 | Lord Corporation | Room temperature curable X-HNBR coating |
| CN109536015A (en) * | 2018-11-06 | 2019-03-29 | 航天材料及工艺研究所 | A kind of thermal protective coating and preparation method thereof |
-
2021
- 2021-08-31 CN CN202111017217.XA patent/CN113667399B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030104231A1 (en) * | 2001-11-09 | 2003-06-05 | Lord Corporation | Room temperature curable X-HNBR coating |
| CN109536015A (en) * | 2018-11-06 | 2019-03-29 | 航天材料及工艺研究所 | A kind of thermal protective coating and preparation method thereof |
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| CN114350257A (en) * | 2022-01-10 | 2022-04-15 | 中国科学院兰州化学物理研究所 | Flexible coating material and preparation method and application thereof |
| CN115074025A (en) * | 2022-08-11 | 2022-09-20 | 陕西天蓝新材料科技有限公司 | Thermal insulation coating for bullet, preparation method and thermal insulation coating |
| CN115975461A (en) * | 2023-02-28 | 2023-04-18 | 信和新材料（苏州）有限公司 | Heat-insulating anti-condensation coating, and preparation method and application thereof |
| CN115975461B (en) * | 2023-02-28 | 2024-03-08 | 信和新材料（苏州）有限公司 | Heat-insulating anti-condensation coating, and preparation method and application thereof |
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