Styrene-butadiene rubber mixing processing is introduced: styrene-butadiene rubber when using mixer mixing processing, heat production is bigger, rubber heat up quickly, so the mixing temperature should be lower than the natural rubber. In addition, the styrene-butadiene rubber for wet, poor ability of chelating agent were mixed with compound in styrene butadiene rubber is more difficult, therefore, the mixer or mixing machine mixing time than natural rubber.
Styrene-butadiene rubber when machining, compound dispersion effect is good, not easy to produce a refined, so in production by mixing mill and mixer mixing. Using mixing machine mixing, must strengthen the roller cooling, filling adhesive capacity should be less than 10% - 15% natural rubber, roller spacing shoulds not be too large (generally) for 4 to 6 mm, mixing temperature should be controlled in 45 to 55 ℃, temperature should be lower than before and after the temperature 5-10 ℃,
the mixing time should be longer than natural rubber from 20% to 40%. Mixing, some additives (such as zinc oxide) should be early to join, carbon black to be partial to join, chelating agent, after all with BoTong frequency may be increased, and to supplement the processing, can be evenly dispersed. Usually the binary mixing method is adopted for good.
Using mixer mixing, generally USES two section of the mixing method. Loading should be smaller than the natural rubber adhesive capacity (capacity factor generally choose 0.60 or so), carbon black should be partial to join, knot together, in order to prevent the heat exhaust temperature should be controlled under 130 ℃.
For styrene butadiene rubber mixing process, choose the banbury mixer, bearing type mixing machine has a domestic counterparts unparalleled high dispersibility, can greatly shorten the mixing time, lower energy costs, improve product quality, and high performance/price ratio, and the industry, are suitable for all kinds of hardness of styrene-butadiene rubber.