A kind of in-situ synthesis preparation method of virtual acoustic material
A technology of in-situ synthesis and acoustic materials, applied in the field of loudspeakers, can solve the problems of the specific mechanism of sound quality and anti-aging mechanism of loudspeakers, etc.
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Embodiment 1
[0019] Step a: Accurately weigh 4g of liquid addition-type heat-curing silicone, 0.01g of aluminum hydroxide, and 6g of carbon black with an average primary particle size of 23nm, stir and dissolve with 40ml of dichloromethane as the reaction oil phase; weigh 8g of poly Vinyl alcohol-1799 and 12.5g of non-ionic emulsifier isomeric alcohol ether 1312, stirred and heated to 90°C with 400g of pure water to fully dissolve, filtered with a 300-mesh filter cloth as the reaction water phase; under rapid stirring, the reaction oil phase Pour it into the reaction water phase at one time, and then slowly raise the temperature to the temperature of the mixed system to 80°C, so that the solvent is gradually evaporated, and at the same time, the silica gel quickly reacts to solidify the oil phase into solid microspheres, and further raises the temperature of the system and controls it at 90~ Continue to react at 95°C for 2 hours to completely harden the microspheres. The reaction product i...
Embodiment 2
[0022] Step a: Accurately weigh 3.5g of liquid addition-type heat-curing organic silica gel, 0.01g of aluminum hydroxide, and 6.5g of carbon black with an average primary particle size of 23nm, and stir and dissolve them evenly with 40ml of dichloromethane as the reaction oil phase; 8g of polyvinyl alcohol-1799 and 12.5g of nonionic emulsifier isomerized alcohol ether 1312 were stirred and heated to 90°C with 400g of pure water to fully dissolve, filtered through a 300-mesh filter cloth as the reaction water phase. Under rapid stirring, the reaction oil phase is poured into the reaction water phase at one time, and then the temperature is slowly raised to the temperature of the mixed system to 80°C, so that the solvent is gradually evaporated, and the silica gel quickly reacts to solidify the oil phase into solid microspheres, further refining the system The temperature is raised and controlled at 90-95° C. to continue the reaction for 2 hours so that the microspheres harden co...
Embodiment 3
[0025] Step a: Accurately weigh 2.5g of liquid addition-type heat-curing organic silica gel, 0.01g of aluminum hydroxide, and 7.5g of carbon black with an average primary particle size of 23nm, stir and dissolve evenly with 40ml of dichloromethane, and use it as the reaction oil phase; 8g of polyvinyl alcohol-1799 and 12.5g of nonionic emulsifier isomerized alcohol ether 1312 were stirred and heated to 90°C with 400g of pure water to fully dissolve, filtered through a 300-mesh filter cloth as the reaction water phase. Under rapid stirring, the reaction oil phase is poured into the reaction water phase at one time, and then the temperature is slowly raised to the temperature of the mixed system to 80°C, so that the solvent is gradually evaporated, and the silica gel quickly reacts to solidify the oil phase into solid microspheres, further refining the system The temperature is raised and controlled at 90-95° C. to continue the reaction for 2 hours so that the microspheres harden...
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