Preparation method for composite sound absorption material
A technology of sound-absorbing materials and raw materials, which is applied in the field of preparation of composite sound-absorbing materials, can solve the problems of poor sound-absorbing effect of sound-absorbing materials, and achieve the effect of good sound insulation effect and good void ratio.
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Embodiment 1
[0024] The preparation method is:
[0025] S1: Take rubber particles, paraffin oil, heavy calcium carbonate, dicumyl peroxide, talcum powder, stearic acid, silane coupling agent, melamine, and pentaerythritol, and mix them uniformly at a temperature of 90°C;
[0026] S2: Send the mixture obtained in step S1 into an extruder, and extrude at a temperature of 120°C; granulate;
[0027] S3: Mix the particles obtained in S2 with plant fiber, clay, bentonite, magnesium oxide, polyimide fiber, carbon fiber, perlite, polyurethane foam, silica sol, and cellulose;
[0028] S4: Add cement and water to the mixture obtained in S3, stir evenly, pour it into a mold, solidify and form it, and obtain a finished product.
[0029] The particle size of the granulation in S4 is preferably 1-2 mm.
Embodiment 2
[0031] The difference between the preparation method and Example 1 is that the temperature in the S1 step is 95°C, and the temperature in the S2 step is 125°C.
Embodiment 3
[0033] The difference between the preparation method and Example 1 is that the temperature in the S1 step is 100°C, and the temperature in the S2 step is 130°C.
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