ROLLER MIXER

Roller Mixers (Mills) None Identified MCA International Ross Stokes Merrill... 

No roller mixer subclasses have been identified. 

Roller mixer ASTM D3795-90 Measure torque over time in roller mixer Measure initial maximum, minimum and final maximum torques and corresponding times Set temperatures, roller speed and charge volume... 

Zhang and Xu [1993] blended EVAc and CPE (chlorinated-polyethylene) with PE (Table 11.9), because crosslinked PE has low flexibility for use as cable insulation. They mixed 30-70% HDPE with 70-30% EVAc or CPE, along with 0.5-1.0% of the antioxidant 1010 and 0.5-1.0% of zinc stearate in a SK-160B double roller mixer at 130-140°C. The blends so made were either hot-pressed into sheets or extruded into tubes, and irradiated with 1.5-MeV electrons to a dose of 100 kGy. Some properties of the irradiated blends and PE are compared in Table 11.21. As the data in this Table show, the flexibility and the elongation of the HDPE/EVAc and HDPE/CPE blends are better than those of the PE but their hardness and softening points are lower. The two blends also show the memory effect better than that shown by the PE. Moreover, the heat-shrunk tubes of the PE/EVAc and PE/CPE blends were more flexible than those of the heat-shmnk PE. 

Rubber mixes were prepared with a David Bridge (UK) roller mixer. Specimen for further examinations was vuleanized in a steel mold at 160 °C, during time i determined rheometrieally with a WG 05... 

Rubber mixes were prepared with a David Bridge (UK) roller mixer. Specimen for further examinations were vulcanized in a steel mold at 160 °C, during time determined rheometrically with a WG 05 instrument (Metalchem, Poland), according to ISO 3417. Liquid polysulfide rubber was cured at room temperature by means of chemical initiator, activated by Mn02. Polysulphone specimen were prepared by cutting off from a rod. 

The rheological compatibility of PPBC with EPDM was also investigated. Melt blends of PPBC and EPDM (1,2,5, and 10 wt%) were prepared in a twin shaft roller mixer attached to Brabender Plasticorder. The mixing temperature (230°C), screw speed (80 rpm), and mixing time (5 min) were kept constant. Dynamic mechanical properties of the individual pol3rmers and blends were measured using RDS - 7700 (Rheometrics Inc.) in the parallel plate mode, with gap, 2 -I- 0.1 mm, and at temperature 230 + 1°C. 

Tan et al. [5] obtained 3D scaffolds using selective laser sintering (SLS) of PEEK/HAp biocomposites. Blends of PEEK/HAp were produced by mixing pure PEEK and HAp powders in different weight percentages using a roller-mixer the prepared powder blends were then processed using an SLS system (Fig. 8). 

Patent Number EP 979714 A1 20000216 ROLLER MIXER-HOMOGENISER FOR RUBBER LualdiR... 

Three types of mixers are particularly used (see Figure 5.32) Z-blade mixers, roller mixers (in which the mixture is forced between two heating rollers, with variable spacing and turning at different speeds) and double screw mixers, mainly used in extrusion techniques. 

Figure 5.32. The main types of mixers A) Z-blade mixer, B) roller mixer, C) double screw mixer...

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