A kind of ablation-resistant thermal insulation coating and preparation method thereof
A heat-insulating coating and ablation-resistant technology, used in coatings, fire-retardant coatings, etc.
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[0041] Further, the present invention also provides a preparation method of an ablation-resistant thermal insulation coating, comprising the following steps:
[0042] Dissolving the organometallic salt in the solvent to form a homogeneous solution;
[0043] Add silicone resin and ceramic precursors into the homogeneous solution, and mix uniformly to form component A;
[0044] Spray or brush, and cure to obtain an ablation-resistant thermal insulation coating.
[0045] Further, steps are also included before spraying or brushing,
[0046] Disperse the filler in the solvent, add the surface modifier, mix uniformly to form component B, and mix component A and component B uniformly to form uniform suspension C.
[0047] In the present invention, the solvent of component A and the solvent of component B are the same or different, but they must be mutually soluble, otherwise the solution will easily cause phase separation after mixing, and a uniform suspension C cannot be formed. ...
Embodiment 1
[0055] This embodiment relates to a new type of ablation-resistant heat-insulating coating, and its preparation method is as follows:
[0056] (1) Dissolve 1g of aluminum isopropoxide and 1.5g of zinc isopropoxide in 20g of n-hexane, then add 30g of phenyltrimethoxysilane and 10g of polycarbosilane, and mix with mechanical stirring until there are no solid particles in the solution , forming component A; 3g silicon hexaboride (SiB 6 ) and 2g of potassium hexatitanate were dispersed in 20g of n-hexane, and 1g of γ-aminopropyltriethoxysilane was added, and mixed by mechanical stirring for 30 minutes to form component B, and component A and component B were mixed uniformly to form a uniform suspension of C.
[0057] (2) Clean the surface of the titanium alloy with acetone to remove oil and surface impurities, and perform sandblasting treatment (50 mesh sand grains, 0.5 MPa) on the surface of the titanium alloy.
[0058] (3) Spray the suspension C on the treated titanium alloy s...
Embodiment 2
[0061] This embodiment relates to a new type of ablation-resistant heat-insulating coating, and its preparation method is as follows:
[0062] (1) Dissolve 1g of aluminum isopropoxide and 1.5g of zinc isopropoxide in 20g of n-hexane, then add 20g of methylphenyl silicone resin and 20g of polysiloxane, and mix with mechanical stirring until there is no solid in the solution Particles, forming component A; 3g of zirconium boride (ZrB 2 ) and 2g of potassium hexatitanate were dispersed in 20g of n-hexane, 1g of γ-(methacryloyloxy)propyltrimethylsilane was added, and mixed by mechanical stirring for 30 minutes to form component B, component A and component Part B was mixed well to form a homogeneous suspension C.
[0063] (2) Clean the surface of the titanium alloy with acetone to remove oil and surface impurities, and perform sandblasting treatment (50 mesh sand grains, 0.5 MPa) on the surface of the titanium alloy.
[0064] (3) Spray the suspension C on the treated titanium al...
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Abstract
Description
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Application Information
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