A kind of sound-absorbing mortar based on perlite-loaded graphene and preparation method thereof
A technology of perlite and graphene, applied in the field of perlite-loaded graphene-based sound-absorbing mortar and its preparation, can solve the problems of narrow sound-absorbing frequency band of perlite, and achieve the advantages of absorption, simple preparation process, and improved surface smoothness. Effect
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[0035] The preparation method of the perlite-loaded graphene-based sound-absorbing mortar of the present invention comprises the following steps: (1) after immersing the perlite in a catalyst solution for a period of time, after drying, put it into a tubular reaction furnace, and pass The protective gas is heated to the decomposition temperature of the carbon source; (2) a carbon source with a certain flow rate is introduced for a period of time, so that the carbon source is decomposed and graphene is evenly grown on the surface of the perlite, and naturally cooled to obtain the perlite-loaded graphene composite porous material; (3) in parts by weight, take the main raw materials: 50-70 parts of perlite-supported graphene composite porous material, 0.5-5 parts of dispersant, 5-10 parts of solid filler, 5-20 parts of emulsion, water 10~30 parts; (4) firstly mix and stir the water and dispersant for 1min~5min, and the rotating speed is 500r / min~2000r / min; then add the perlite-loa...
Embodiment 1
[0040] The present embodiment provides a perlite-loaded graphene-based sound-absorbing mortar and a preparation method thereof, the steps are as follows:
[0041]1) Preparation of perlite-supported graphene composite porous materials
[0042] Take 30 g of 70-90 mesh perlite, immerse it in a 30% copper nitrate aqueous solution, take it out after 10 minutes, put it in an oven, dry it at 100 ° C for 120 minutes, put it into the central constant temperature zone of the quartz reaction tube, and put the tube reaction The furnace was evacuated and fed with nitrogen, which was repeated 4 times. Under nitrogen protection, the temperature was raised from room temperature to 1000 °C at a rate of 10 °C / min, and then hydrogen was introduced into the quartz tube for 30 min at this temperature. In the quartz tube, pass acetylene at a flow rate of 50sccm for 50min. After natural cooling, the perlite-loaded graphene composite porous material is obtained, and the AFM (atomic force microscope) ...
Embodiment 2
[0047] The present embodiment provides a perlite-loaded graphene-based sound-absorbing mortar and a preparation method thereof, the steps are as follows:
[0048] 1) Preparation of perlite-supported graphene composite porous materials
[0049] Take 20 g of 50-70 mesh perlite, immerse it in a 15% copper nitrate aqueous solution, take it out after 10 minutes, put it in an oven, dry it at 100 ° C for 180 minutes, put it into the central constant temperature zone of the quartz reaction tube, and put the tube reaction The furnace was evacuated and fed with nitrogen, which was repeated 4 times. Under the protection of nitrogen, the temperature was raised from room temperature to 1100 °C at a rate of 10 °C / min, and then hydrogen was introduced into the quartz tube. Acetylene was introduced into the quartz tube at a flow rate of 120 sccm for 120 min, and after natural cooling, the perlite-supported graphene composite porous material was obtained.
[0050] 2) Preparation of perlite-lo...
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