A light-weight, high-strength, heat-insulating and wave-permeable composite material and its preparation method
A composite material and high-strength technology, applied in chemical instruments and methods, lamination auxiliary operations, lamination and other directions, can solve the problems of improving the thermal insulation performance of resin-based composite materials, poor mechanical properties, and inability to radome main structural materials, etc. To achieve the effect of improving heat resistance and mechanical properties, meeting thermal insulation requirements, and improving thermal insulation performance
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Embodiment 1
[0051] Add 8.2g octaglycidyl ether-based POSS, 0.08g 2-ethyl-4-methylimidazole, 8.2g SiO 2 Airgel powder (specific surface area 650m 2 / g), after ultrasonic dispersion, heat and react at 50°C for 8 hours to prepare a modified methylphenyl silicone resin solution. Brush the resin solution evenly on the surface of 164g hollow quartz fiber cloth (hollowness 32%), let it air in the air for 12 hours, then treat it in a blast drying oven at 50°C for 40 minutes, and cut it into 180mm×180mm prepreg cloth after drying , laying up neatly to get the prepreg layer. Place the prepreg layer on a vacuum hot press machine for hot press molding. The final molding temperature is 230°C and the pressure is 9MPa. After the molding is completed, it is cooled to obtain a composite material. The composite material is heat-treated in a high-temperature oven under the condition of 300° C. for 3 minutes to obtain a resin-based wave-transparent composite material.
Embodiment 2
[0053] In 820g methylphenyl silicone resin solution (DC808, resin mass concentration is 30%), add 36.9g octaglycidyl ether base POSS, 0.4g triethylamine, 19.6gAl 2 o 3 Airgel powder (specific surface area 350m 2 / g), after ultrasonic dispersion, heat and react at 120°C for 2 hours to prepare a modified methylphenyl silicone resin solution. Brush the resin solution evenly on the surface of 300g hollow quartz fiber cloth (hollowness 42%), let it air in the air for 4 hours, then treat it in a blast drying oven at 100°C for 20 minutes, cut it into 250mm×250mm prepreg after drying Cloth, laid neatly to obtain prepreg cloth layer. Place the prepreg layer on a vacuum hot press for hot pressing molding. The final molding temperature is 210°C and the pressure is 16MPa. After molding, it is cooled to obtain a composite material. The composite material is heat-treated in a high-temperature oven under the condition of 400° C. for 3 minutes to obtain a resin-based wave-transparent compo...
Embodiment 3
[0055] Add 3.24g octaepoxycyclohexyl POSS, 0.03g diaminodiphenyl sulfone, 16.2g ZrO successively in 180g methyl silicone resin solution (SH-9502, resin mass concentration is 60%) 2 Airgel powder (specific surface area 400m 2 / g), after ultrasonic dispersion, heat and react at 80°C for 5h, and prepare a modified methyl silicone resin solution. Brush the resin solution evenly on the surface of 162g hollow quartz fiber cloth (hollowness 32%), let it air in the air for 8 hours, then treat it in a blast drying oven at 80°C for 40 minutes, and cut it into 150mm×150mm prepreg cloth after drying , laying up neatly to get the prepreg layer. Place the prepreg layer on a vacuum hot press for hot pressing molding. The final molding temperature is 200°C and the pressure is 6MPa. After molding, it is cooled to obtain a composite material. The composite material is heat-treated in a high-temperature oven under the condition of 400° C. for 1 minute to obtain a resin-based wave-transparent c...
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Abstract
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