Solvent-free silicon-based ablation-resistant material
An ablation-resistant and solvent-free technology, which is applied in the field of thermal protection materials for solid rocket motors, can solve problems such as environmental pollution, human harm, and long material preparation cycles, and achieve good oxidation resistance, high temperature resistance, and oxidation resistance performance effect
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preparation example Construction
[0036] The preparation technology of composite material of the present invention:
[0037] (1) mixed
[0038] Weigh the liquid silicone resin, silicon carbide, silicon dioxide, metal oxide and silicate, and chopped carbon fiber in proportion, then add them to the barrel of the small laboratory disperser, cover the barrel cover, and start the adjustment. Speed device switch, set the speed at 500-6000rmp / min, so that the materials are fully mixed under the drive of the stirring paddle, the stirring time is controlled within 30-50 minutes, turn off the speed control device switch, open the barrel box, and add the curing agent In the premix, start the speed regulating device again, set the speed at 200-2000rmp / min, fully mix the curing agent and the premix, control the stirring time within 5-10 minutes, turn off the switch of the speed regulating device, and open the barrel Box, take out the mixed material.
[0039] (2) curing
[0040] The premix is poured into the metal te...
Embodiment 1
[0045] name parts by mass liquid silicone 100 Silicon carbide 30 metal oxide or silicate 45 Chopped Aramid Fiber 5 silica 0 Hardener 1.5
Embodiment 2
[0047] name parts by mass liquid silicone 100 Silicon carbide 80 metal oxide or silicate 0 chopped carbon fiber 10 silica 5 Hardener 2
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