After dry mixing
of stabilizing agents with soil, the samples were tested through modified proctor compaction to determine the OMC and MDD.
"Beyond spray-drying, SuperiorPowders offers extensive value-added possibilities for dry mixing
," added Les Auchincloss, Chairman, Marigot Ltd.
The coagulum produced by such wet mixing step, with or without intermediate processing steps, is then mixed with additional elastomer in a dry mixing
step to form the elastomer composite.
Within the system, ingredients are pre-batched into weight scales and after a short period of dry mixing
, the sensor measures moisture content and sand temperature.
For the unaged samples, the crosslink densities obtained using the two processing methods (elastomer composites and dry mixing
) were comparable.
It offers fluid bed drying, spray coating, spray granulation and dry mixing
as well as providing secure product handling and containment; variable control of process airflow, temperature and liquid addition; and has interchangeable product containers.
CEC mixing was first carried out under the same conditions and formulations as in convention al dry mixing
(CEC 1 and CEC 2).
The use of the Buna SL 18 BMB in conjunction with BR BMBs can lead to significant mixing time savings relative to conventional dry mixing
, according to the company.
This proprietary technology represents a breakthrough versus conventional dry mixing of NR/CB compounds.
In the conventional dry mixing of carbon black into natural rubber, with increasing mixing time the quality of dispersion of the carbon black will improve, but not without breakdown of the compound and degradation of two key measures of compound performance: Its molecular weight (MW) and polymer-filler interaction as indicated by bound rubber.
For those willing to make the investment, dry mixing
silica is still an option.
Compounds using WMB were prepared by the two stage mixing method, while dry mixing
consisted of three stages.