Method for preparing rubber filler by modifying coal ash waste slag obtained after extracting aluminum through acid process
A technology of fly ash waste slag and rubber filler, which is applied in the direction of fibrous filler, dyeing physical treatment, dyeing low-molecular organic compound treatment, etc. It can solve the problems of complicated process and the utilization of unburned carbon in ash slag, etc. Achieve the effects of simple process, resource saving and emission reduction
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[0026] Example 1
[0027] a. Rinse the fly ash waste residue after acid extraction of aluminum to pH=6 and then dry;
[0028] b. Crush the fly ash waste slag after acid extraction of aluminum to <300 mesh;
[0029] c. Take 1% silane of the dried ash mass, mix, grind, mix uniformly, and age for more than 4 hours to obtain active modified ash;
[0030] d. Take 15 parts of activated modified ash, 100 parts of EPDM rubber, 85 parts of carbon black, 4 parts of stearic acid, 5 parts of zinc oxide, 1.5 parts of sulfur powder, vulcanization accelerator M, vulcanization accelerator D, 1.5 parts of any one of vulcanization accelerator TT, vulcanization accelerator H, vulcanization accelerator ZDMC, vulcanization accelerator ZBX or vulcanization accelerator NA-22 into the mixer;
[0031] e. Mix for 20 minutes at 130°C;
[0032] f. After cooling, it is molded in a flat vulcanizer.
[0033] The mechanical properties of the test samples have all reached the GB / T528-1998 standard.
Example Embodiment
[0034] Example 2
[0035] a. Leach the fly ash waste residue after acid extraction of aluminum to pH=7 and then dry;
[0036] b. Crush the fly ash waste residue after the acid extraction of aluminum to <300 mesh;
[0037] c. Take 2% octadecanoic acid of the dried ash mass, mix, grind, mix uniformly, and age for more than 4 hours to obtain active modified ash;
[0038] d. Take 20 parts of modified ash, 100 parts of EPDM rubber, 80 parts of carbon black, 4 parts of stearic acid, 5 parts of zinc oxide, 1.5 parts of sulfur powder, vulcanization accelerator M, vulcanization accelerator D, vulcanization 1.5 parts of accelerator TT, vulcanization accelerator H, vulcanization accelerator ZDMC, vulcanization accelerator ZBX or vulcanization accelerator NA-22 are put into the mixer;
[0039] e. Mix for 20 minutes at 130°C;
[0040] f. After cooling, it is molded in a flat vulcanizer.
[0041] The mechanical properties of the test samples have all reached the GB / T528-1998 standard.
Example Embodiment
[0042] Example 3
[0043] a. Rinse the fly ash waste residue after acid extraction of aluminum to pH=6.5 and then dry;
[0044] b. Crush the fly ash waste residue after the acid extraction of aluminum to <300 mesh;
[0045] c. Take 3% triethanolamine of the dried ash mass, mix, grind, mix uniformly, and age for more than 4 hours to obtain active modified ash;
[0046] d. Combine 25 parts of modified carbonized ash, 100 parts of EPDM rubber, 75 parts of carbon black, 4 parts of stearic acid, 5 parts of zinc oxide, 1.5 parts of sulfur powder, vulcanization accelerator M, vulcanization accelerator D, 1.5 parts of any one of vulcanization accelerator TT, vulcanization accelerator H, vulcanization accelerator ZDMC, vulcanization accelerator ZBX or vulcanization accelerator NA-22 into the mixer;
[0047] e. Mix for 20 minutes at 130°C;
[0048] f. After cooling, it is molded in a flat vulcanizer.
[0049] The mechanical properties of the test samples have all reached the GB / T528-1998 standard....
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