Atlapulgite modified composite sound absorbing material and preparation method thereof
A technology of sound-absorbing materials and activated clay, which is applied in the field of composite sound-absorbing materials modified by activated clay and its preparation, to achieve the effects of improving sound-absorbing effect and strength, high strength, and improving mechanical properties
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[0014] A composite sound-absorbing material modified by activated clay, which is made of the following raw materials in parts by weight: 115 parts of barite powder, 55 parts of ceramsite, 50 parts of activated clay, 86 parts of styrene-acrylic emulsion, 62 parts of modified tree ash, 18 parts of mica powder, 25 parts of polyimide fiber, 18 parts of nano carbon, 30 parts of EVA, 20 parts of CPE, 8 parts of POM, 6 parts of phthalate, 5 parts of triethyl phosphate, calcium stearate 2 parts, 1.5 parts zinc stearate.
[0015] Wherein, the modified tree ash is prepared by the following method: first soak the tree ash with 15% hydrochloric acid for 3 hours, wash it with deionized water, then soak it with 12% sodium hydroxide solution for 4 hours, and then wash it with deionized water to medium Dry, add 3% sodium lignosulfonate, 2% methyl triethoxy silane, 2.5% epoxidized triglyceride, 4% ceramic powder equivalent to the weight of tree ash, high speed 1200r / min stirring for 30min, dryi...
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