A kind of preparation method of modified powder styrene-butadiene rubber
A technology of powdered styrene-butadiene rubber and styrene-butadiene latex, which is applied in the treatment of dyed organic silicon compounds and fibrous fillers. It can solve the problems of increased rubber impurity content and difficult wastewater treatment, and achieves improved activation index, high rubber content, and adsorption Enhanced effect
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Embodiment 1
[0048] ①Modification of attapulgite: In the mixer, add 100 parts of water and 10 parts of attapulgite, start the mixer and stir until attapulgite forms a suspension. Add 10 parts of dispersed attapulgite suspension into a beaker, add 10 parts of 3 mol / L hydrochloric acid, and stir at 60° C. to obtain attapulgite hydrochloric acid solution. Then adjust the attapulgite hydrochloric acid solution to a pH of about 2 with 2 mol / L sodium hydroxide solution, and stir. Add 0.3 parts of vinyltriethoxysilane, stir for 1 hour, then wash, filter and dry to obtain modified attapulgite. ② Coagulation: Take 100 parts of styrene-butadiene latex and add it to the coagulation kettle, add 20 parts of medium water, 0.2 parts of N-octyl-N'-phenyl-ρ-p-phenylenediamine, 0.02 parts of trialkylammonium chloride, stir and heat , at a coagulation temperature of 20°C, add 5 parts of modified attapulgite, 15 parts of sulfuric acid with a concentration of 1mol / L, stir at 20°C for 3 hours for aging, then w...
Embodiment 2
[0052] ①Modification of attapulgite: In the mixer, add 100 parts of water, add 30 parts of attapulgite, start the mixer and stir until attapulgite forms a suspension. Add 3 parts of dispersed attapulgite suspension into a beaker, add 20 parts of 3 mol / L hydrochloric acid, and stir at 80° C. to obtain attapulgite hydrochloric acid solution. Then adjust the attapulgite hydrochloric acid solution to a pH value of about 4 with 5 mol / L sodium hydroxide solution, and stir. Add 1 part of silane coupling agent vinyltriethoxysilane, stir for 1 hour, then wash, filter and dry to obtain modified attapulgite. ②Agglomeration: Take 100 parts of styrene-butadiene latex into the coagulation kettle, add 50 parts of medium water, 0.5 parts of N-octyl-N'-phenyl-ρ-p-phenylenediamine, 0.08 parts of trialkylammonium chloride, stir and heat , at a coagulation temperature of 80°C, add 20 parts of modified attapulgite, 15 parts of sulfuric acid with a concentration of 5mol / L, stir at 80°C for 2 hours...
Embodiment 3
[0055] ①Modification of attapulgite: In the mixer, add 100 parts of water, add 20 parts of attapulgite, start the mixer and stir until attapulgite forms a suspension. Add 5 parts of dispersed attapulgite suspension into a beaker, add 15 parts of 4 mol / L hydrochloric acid, and stir at 70° C. to obtain attapulgite hydrochloric acid solution. Then adjust the attapulgite hydrochloric acid solution to a pH value of about 3 with 4 mol / L sodium hydroxide solution, and stir. Add 0.6 parts of silane coupling agent vinyltriethoxysilane, stir for 2 hours, then wash, filter and dry to obtain modified attapulgite. ②Agglomeration: Take 100 parts of styrene-butadiene latex into the coagulation kettle, add 50 parts of medium water, 0.3 parts of N-octyl-N'-phenyl-ρ-p-phenylenediamine, 0.03 parts of trialkylammonium chloride, stir and heat , at a coagulation temperature of 30°C, add 10 parts of modified attapulgite, 15 parts of sulfuric acid with a concentration of 2mol / L, stir at 30°C for 2 h...
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