ANTI-ABLATIVE COATING MATERIAL FOR RESIN-BASED COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR

Abstract

A resin matrix composite used as anti-ablation coating material and its preparation method is provided. The resin matrix composite is a mixture of yttria-stabilized zirconia (YSZ), a resin, Cu, and SiO.sub.2. The mixture is uniform and include spherical particles or spherical aggregates. A method for preparing a resin matrix composite for anti-ablation coating includes mixing YSZ, a resin, Cu, and SiO.sub.2 to obtain a mixed powder and performing spray granulation of the mixed powder to obtain a resin matrix composite including spherical particles or spherical agglomerates.

Claims

1.-8. (canceled)

9. A resin matrix composite used as anti-ablation coating material, comprising: a mixture of yttria-stabilized zirconia (YSZ), a resin, Cu, and SiO.sub.2, wherein the mixture is uniform and include spherical particles or spherical aggregates.

10. The resin matrix composite according to claim 9, wherein the mixture includes 70-75 parts of the YSZ, 3-9 parts of the resin, 8-10 parts of the Cu, and 6-17 parts of the SiO.sub.2, by weight.

11. The resin matrix composite according to claim 9, wherein the resin includes 1-3 parts of a phenolic resin, 2-3 parts of a modified silicone resin, and 0-3 parts of a polyester, by weight.

12. A method for preparing a resin matrix composite for anti-ablation coating, comprising: mixing YSZ, a resin, Cu, and SiO.sub.2 to obtain a mixed powder; wherein particle sizes in the mixed powder are 10-20 nm for the YSZ, 1-2 μm for the resin, 3-5 μm of the Cu, and 3-5 μm of the SiO.sub.2, the mixed powder includes 70-75 parts of the YSZ, 3-9 parts of the resin, 8-10 parts of the Cu, and 6-17 parts of the SiO.sub.2, by weight; and performing spray granulation of the mixed powder to obtain a resin matrix composite including spherical particles or spherical agglomerates.

13. A method according to claim 12, wherein a binder for the spray granulation is polyvinyl alcohol, a heating temperature for the spray granulation is 60-80° C., a stirring time for the spray granulation is 60˜90 min, and a stirring rate for the spray granulation is 500-700 rpm, a vacuum is used for the spray granulation, and the spherical particles are 30-45 μm in size.

14. The method according to claim 12, further comprising: ball milling the mixed powder in a liquid medium, at a rotating speed of 10-20 rpm, a mixing time of 10-20 hours; ultrasonic treating at a frequency of 10-20 Hz for 1-2 hours; and drying at 60-90° C. for 1-2 hours.

15. The method according to claim 14, wherein the liquid medium is alcohol.

16. The method according to claim 12 wherein the resin includes 1-3 parts of a phenolic resin, 2-3 parts of a modified silicone resin, and 0-3 parts of a polyester, by weight.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 shows the scanning electron microscopy (SEM) image of YSZ composite and ablative phase (Cu, SiO.sub.2, phenolic resin, modified silicone resin, and polyester) powder prepared in example 1.

DETAILED DESCRIPTION

[0018] One or more embodiments of the present disclosure are described clearly and completely in combination with examples. Clearly, the described examples are only some of the applications of the invention and does not constitute all of them. Based on the examples of the invention, all other applications obtained by ordinary technicians in the field without original work belong under the protective scope of the invention.

EXAMPLE 1

[0019] An anti-ablation coating material for resin matrix composites is provided. The anti-ablation coating material is a uniform mixture of YSZ, resin, Cu and SiO.sub.2, and the mixture consists of spherical particles or spherical aggregates.

[0020] The mass ratio of YSZ, resin, Cu and SiO.sub.2 is 72:3:8:17.

[0021] The resin includes phenolic resin, modified silicone resin and polyester at a mass ratio of 1:2:1.

[0022] A preparation method for the anti-ablation coating material for resin matrix composites is provided. YSZ powder with particle sizes of 10-20 nm, resin powder with particle sizes of 1-2 μm, Cu powder with particle sizes of 3-5 μm and SiO.sub.2 powder with particle sizes of 3-5 μm are uniformly mixed at a mass ratio of 72:3:8:17. The resin powder is phenolic resin powder, modified silicone resin powder and polyester powder, at a mass ratio of 1:2:1. The atomized granulation of the mixed powder results in spherical particles or spherical agglomerations.

[0023] The binder for the spray granulation of the mixed powder is polyvinyl alcohol, and the technological parameters of spray granulation in the intermediate layer are as follows: a heating temperature of 60° C., a stirring time of 60 min, and a stirring speed of 500 RPM; additionally, the granulating link is carried out under vacuum conditions. Spherical pellets with a particle size of 30 μm are obtained.

[0024] The mixed powder is obtained by ball milling in liquid medium (preferably alcohol), and the ball milling parameters are as follows: a rotating speed of 10 RPM, a mixing time of 10 hours, an ultrasonic treatment at a frequency of 10 Hz for 1 hour, and a drying treatment at 60° C. for 1 hour.

[0025] The resin powder is a phenolic resin powder, modified silicone resin powder, and polyester powder at a mass ratio of 1:2:1.

EXAMPLE 2

[0026] One or more embodiments of the present disclosure are described as follows:

[0027] An anti-ablation coating material for resin matrix composites is provided. The anti-ablation coating material is a uniform mixture of YSZ, resin, Cu and SiO.sub.2, and the mixture consists of spherical particles or spherical aggregates.

[0028] The mass ratio of YSZ, resin, Cu and SiO.sub.2 is72:4:8:16.

[0029] The resin includes phenolic resin, modified silicone resin and polyester powder at a mass ratio of 2:2:1.

[0030] A preparation method of the anti-ablation coating material for resin matrix composites is provided. YSZ powder with a particle size of 15 m, resin powder with a particle size of 1 μm, Cu powder with a particle size of 3 μm and SiO.sub.2 powder with a particle size of 3 μm are uniformly mixed at a mass ratio of YSZ powder, resin powder, Cu powder and SiO.sub.2 powder of 72:4:8:16. The resin powder is phenolic resin powder, modified silicone resin powder and polyester powder at a mass ratio of 2:2:1. The atomized granulation of the mixed powder results in spherical particles or spherical agglomerations.

[0031] The binder for the spray granulation of the mixed powder is polyvinyl alcohol. The technological parameters of spray granulation in the intermediate layer are as follows: a heating temperature of 70° C., a stirring time of 60 min, and a stirring rate of 500 RPM; additionally, the granulating part is carried out under vacuum conditions. Spherical aggregates with a particle size of 30 μm are obtained.

[0032] The mixed powder is obtained by ball milling in a liquid medium (preferably alcohol), and the ball milling parameters are as follows: a rotating speed of 15 RPM, a mixing time of 15 hours, an ultrasonic treatment at frequency of 15 Hz for 1 hour, and a drying treatment at 70° C. for 1 hour.

[0033] The resin powder is phenolic resin powder, modified silicone resin powder and polyester powder at a mass ratio 2:2:1.

EXAMPLE 3

[0034] One or more embodiments of the present disclosure are described as follows:

[0035] An anti-ablation coating material for resin matrix composites is provided. The anti-ablation coating material is a uniform mixture of YSZ, resin, Cu and SiO.sub.2, and the mixture consists of spherical particles or spherical aggregates.

[0036] The mass ratio of YSZ, resin, Cu and SiO.sub.2 is 74:8:8:10.

[0037] The resin includes phenolic resin, modified silicone resin and polyester at a mass ratio of 2:2:2.

[0038] A preparation method for the anti-ablation coating material for resin matrix composites is provided. YSZ powder with a particle size of 15 nm, resin powder with a particle size of 2 μm, Cu powder with a particle size of 2 μm and SiO.sub.2 powder with a particle size of 4 μm are uniformly mixed at a mass ratio of 74:8:8:10. The resin powder consists of phenolic resin powder, modified silicone resin powder and polyester powder at a mass ratio of 2:2:2. The atomized granulation of the mixed powder results in spherical particles or spherical agglomerations.

[0039] The binder for the spray granulation of the mixed powder is polyvinyl alcohol. The technological parameters of spray granulation in the intermediate layer are as follows: a heating temperature of 70° C., a stirring time of 80 min, and a stirring rate of 600 RPM; additionally, the granulating part is carried out under vacuum conditions. Spherical aggregates with a particle size of 45 m are obtained.

[0040] The mixed powder is obtained by ball milling in a liquid medium (preferably alcohol), and the ball milling parameters are as follows: a rotating speed of 15 RPM, a mixing time of 15 hours, an ultrasonic treatment at a frequency of 20 Hz for 2 hours, and a drying treatment at 90° C. for 2 hours.

[0041] The resin powder consists of phenolic resin powder, modified silicone resin powder, and polyester powder at a mass ratio of 2:2:2.

EXAMPLE 4

[0042] One or more embodiments of the present disclosure are described as follows:

[0043] An anti-ablation coating material for resin matrix composites is provided. The anti-ablation coating material is a uniform mixture of YSZ, resin, Cu and SiO.sub.2, and the mixture consists of spherical particles or spherical aggregates.

[0044] The mass ratio of YSZ, resin, Cu and SiO.sub.2 is 75:9:10:6.

[0045] The resin includes phenolic resin, modified silicone resin and polyester at a mass ratio of 3:3:3.

[0046] A preparation method for the anti-ablation coating material for resin matrix composites is provided. YSZ powder with a particle size of 20 nm, resin powder with a particle size of 2 μm, Cu powder with a particle size of 5 μm and SiO.sub.2 powder with a particle size of 5 μm are uniformly mixed at a mass ratio of 75:9:10:6. The resin powder consists of phenolic resin powder, modified silicone resin powder and polyester powder at a mass ratio of 3:3:3. The atomized granulation of the mixed powder results in spherical particles or spherical agglomerations.

[0047] The binder for the spray granulation of the mixed powder is polyvinyl alcohol. The technological parameters of spray granulation in the intermediate layer are as follows: a heating temperature of 80° C., a stirring time of 90 min, and a stirring rate of700 RPM; additionally, the granulating part is carried out under vacuum conditions. Spherical aggregates with a particle size of 45 μm are obtained.

[0048] The mixed powder is obtained by ball milling in a liquid medium (preferably alcohol), and the ball milling parameters are as follows: a rotating speed of 20 RPM, a mixing time of 20 hours, an ultrasonic treatment at a frequency of 20 Hz for 2 hours, and a drying treatment at 90° C. for 2 hours.

[0049] The resin powder consists of phenolic resin powder, modified silicone resin powder and polyester powder at a mass ratio of 3:3:3.

[0050] It should be understood that for those skilled in the field, improvements or transformations can be made according to the above descriptions, and all these improvements and transformations will fall within the protected scope of the appended claims of this invention.

[0051] The ranges of this disclosure may be expressed in the disclosure as from about one particular value, to about another particular value, or both. When such a range is expressed, it is to be understood that another embodiment is from the one particular value, to the other particular value, or both, along with all combinations within this range.

[0052] Although the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments may be devised without departing from the scope of the present invention. Accordingly, the scope of the invention should be limited only by the attached claims.