Graphene-containing sound absorption and insulation material as well as preparation method and application thereof
A technology of sound absorption and insulation and graphene, which is applied in the field of sound absorption and insulation materials containing graphene and its preparation, and achieves the effects of simple process flow, improved sound absorption and insulation performance, and mild reaction conditions.
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[0026] The preparation of graphene powder is a prior art, and will not be repeated in the present invention. It is sealed and stored in a dry environment, and is dried at a temperature of 40-60°C before use.
[0027] The oxygen content of the graphene powder is 1~16wt%, and the specific surface area of the graphene powder is 150~500m 2 / g, its value should be adjusted reasonably according to the specific situation.
[0028] The multi-component polyether includes 20~70 parts by weight of polyether polyol, 20~70 parts by weight of polymer polyol, 0.5~5 parts by weight of crosslinking agent, 2~6 parts by weight of foaming agent, 0.5~70 parts by weight of 10 parts by weight of the cell opener and 0.25 to 3 parts by weight of the catalyst, this multi-component polyether is a semi-finished product in the preparation process, the adjustment of its proportioning and the preparation method are all existing conventional techniques, and will not be carried out in the present invention....
Embodiment 1
[0029] Embodiment 1, a sound-absorbing and sound-insulating material containing graphene, comprising 49.5 parts by weight of multi-component polyether, 49.5 parts by weight of diphenylmethane diisocyanate and 1 part by weight of graphene powder.
[0030] The preparation method of the described sound-absorbing and insulating material containing graphene comprises the steps:
[0031] In step 1, 1 part by weight of graphene powder is dried in a vacuum drying oven at a drying temperature of 50°C.
[0032] Clean the batching bucket, weigh 49.5 parts by weight of multi-component polyether and pour it into the batching bucket, set the mixer speed to 500rpm, and after the rotation speed is uniform, slowly and repeatedly pour the dried graphene powder. After all the graphene powder is added, gradually increase the speed of the mixer to 1000rpm, and after the speed is stable, continue stirring for 2-3min to obtain a mixture containing graphene powder. The graphene powder is added at a ...
Embodiment 2
[0036] Embodiment two, a kind of sound-absorbing and insulating material containing graphene, comprises the multi-component polyether of 49.9 parts by weight, the diphenylmethane diisocyanate of 49.9 parts by weight and the graphene powder of 0.2 parts by weight, its preparation method Process parameter is identical with embodiment one.
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