Aerospace coating is a special coating applied to the surface of aerospace vehicles. It has the characteristics of high temperature resistance, radiation resistance, oxidation resistance and corrosion resistance. It can protect the surface of aerospace vehicles from the extreme environment encountered in high-altitude flight and prolong its service life. Aerospace coatings have a wide range of applications, covering various parts of aircraft, satellites, rockets and other aerospace vehicles, such as fuselage, engine, wing surface, etc.
Detection performance
The performance testing of aerospace coatings needs to consider many factors to ensure that it meets the use requirements and safety requirements of aerospace vehicles. The following is a detailed description of the performance parameters that need to be tested for aerospace coatings:
| performance parameter | Test Methods | Testing Standard |
|---|---|---|
| heat resistance | Thermogravimetric analyzer measurement | none |
| Corrosion resistance | Salt spray test, corrosion test | GB/T1771-2007 |
| Radiation resistance | X-ray irradiation test, proton irradiation test | none |
| Adhesion | Cross-cut method | GB/T9286-1998 |
| weather resistance | Light aging test | GB/T 16422.2-2014 |
| wear resistance | wear test | ASTM D4060-14 |
| Scratch resistance | scratch test | none |
| Chemical Resistance | Chemical Immersion Test | none |
| Gloss | Gloss meter measurement | GB/T9754-2007 |
| chromatic aberration | Color Comparator Measurements | GB/T1543-2008 |
Detection method
The following is a detailed description of the test methods for the performance parameters that need to be tested for aerospace coatings:
Heat resistance: Use a thermogravimetric analyzer to measure the thermal stability and thermal decomposition characteristics of coatings in high temperature environments.
Corrosion resistance: Use salt spray test, corrosion test and other methods to simulate the corrosion resistance of aerospace vehicles in different corrosive environments.
Radiation resistance: Use X-ray irradiation test, proton irradiation test and other methods to simulate the radiation resistance performance of aerospace vehicles in a radiation environment.
Adhesion: Using the peel test, the strength of the adhesion between the coating and the substrate is measured.
Weather resistance: Use the light aging test to simulate the weather resistance performance of aerospace vehicles under different light and climate conditions.
Abrasion resistance: Use the abrasion test to measure the degree of wear and wear resistance of the coating under different abrasion conditions.
Scratch resistance: use the scratch test to measure the scratch degree and scratch resistance performance of the coating under different scratch conditions.
Chemical Resistance: Use the chemical immersion test to simulate the chemical resistance of aerospace vehicles in different chemical environments.
Gloss: Use a gloss meter to measure the gloss of the coating to evaluate the gloss effect and gloss stability of the surface.
Color Difference: Use a color comparator to measure the color difference of a coating to assess its color consistency and accuracy.
Beichao reminds you: Different performance parameters may require different testing methods and equipment, and there may be some industry standards and specifications. For the performance testing of aerospace coatings, corresponding testing methods and standards should be selected according to actual needs.
