Polyimide foam composite material
A composite material and polyimide technology, applied in the field of polyimide foam composite materials, can solve the problems of large usage, lightweight design obstacles, high density of thermal insulation materials, etc., and achieve improved speed, convenient construction, and thermal insulation. Good results
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Embodiment 1
[0014] A polyimide foam composite material preparation process adopts a one-step molding process:
[0015] Add 40 parts of polyamic acid, 0.05 parts of graphene sheets, 0.05 parts of carbon nanofibers, 0.05 parts of vitrified microbeads, 5 parts of foaming agent water, and 20 parts of silicone oil into the reaction kettle, set the temperature at 160°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.
Embodiment 2
[0017] Add 70 parts of polyamic acid, 10 parts of graphene sheets, 0.05 parts of carbon nanofibers, 0.03 parts of vitrified microbeads, 5 parts of foaming agent water, and 40 parts of silicone oil into the reaction kettle, set the temperature at 180°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.
Embodiment 3
[0019] Add 55 parts of polyamic acid, 5 parts of graphene sheets, 3 parts of carbon nanofibers, 0.04 parts of vitrified microbeads, 8 parts of foaming agent water, and 30 parts of silicone oil into the reaction kettle, set the temperature at 160°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.
[0020] The density of the polyimide foam composite material gained in the present invention is 20-50g / cm 3 , the temperature interval span of damping coefficient ≥0.3 is 250°C.
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