Brochure: Carbon Additives for Polymer Compounds - Timcal Graphite

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TYpICAL AppLICATIonS FoR EnSACo® ConduCTIvE CARBon BLACk EnSACo® ConduCTIvE CARBon BLACkS In LdpE Infl uence of the carbon black type and of the MFI of the starting polymer on the resistivity Compounding: laboratory Brabender internal mixer. Processing: compression moulding. The higher the structure of the carbon black, the lower the percolation threshold. At equal structure, the carbon black of lower surface area gets an advantage on resistivity that may be coming from the easier dispersion resulting in smoother compounding. The higher the meltfl ow index of the starting polymer, the lower the percolation threshold. EnSACo® ConduCTIvE CARBon BLACkS In pp Infl uence of the carbon black type on the resistivity. Relation between resistivity and melt fl ow index Compounding and processing: twin screw extruder Haake PTW16 and realization of tapes. At same structure level, the carbon black with the lowest surface area has the smallest impact on fl uidity reduction. Infl uence of carbon black loading and processing on the resistivity Compounding: ZSK25 twin screw extruder. Processing: injection moulding. Injection moulding generates more shear than compression moulding. The closest to the percolation, the more visible is that eff ect. A concentration safety margin can overcome this phenomenon. 12 various carbon black in LdpE MFI 0.3 and 36 (g/10 min) Volume Resistivity [Ohm.cm] Volume Resistivity [Ohm.cm] Volume Resistivity [Ohm.cm] 10 8 10 6 10 4 10 2 10 0 5 10 15 20 25 30 35 0 10 4 10 3 10 2 10 1 10 0 10 6 10 5 10 4 10 3 10 2 10 1 10 0 Carbon Black Concentration [%] ppH MI54 (230 °C/5 kg) with various conductive carbon blacks 0 10 100 171 MFI [230 °C/5 kg] [g/10 min] 24 10 6 4.6E + 10 strands pellets + pressed pellets + plaques injection moulding 54 E250 G LD 0.3 E250 G LD 36 N472 LD 0.3 N472 LD 36 P-type LD 0.3 P-type LD 36 E250 G high structure low surface area N472 high structure high surface area 13.50% E250 G 15% E250 G
EnSACo® ConduCTIvE CARBon BLACkS In pC Infl uence of the carbon black type on the resistivity Compounding: ZSK57 twin screw extruder. Processing: injection moulding. Infl uence of the carbon black type on mechanical and rheological performances Compounding: ZSK57 twin screw extruder. Processing: injection moulding. Although the concentration for percolation is double the level with ENSACO® 250 G, most mechanical properties are still better. Tensile Strength for both carbon blacks is almost at the same level. volume Resistivity (vR) in function of carbon black loading Volume Resistivity [log (Ohm.cm)] Izod [kJ/m 2 ] 12 11 10 9 8 7 6 5 4 3 2 1 5 10 15 20 25 Carbon Black concentration [%] Izod impact strength, notched, in function of vR 12 11 10 9 8 7 6 5 4 1 2 3 4 5 6 7 8 9 10 11 12 Volume Resistivity [log (Ohm.cm)] Tensile strength in function of vR Tensile Strength [MPa] 68 67 66 65 64 63 62 61 60 1 2 3 4 5 6 7 8 9 10 11 12 Volume Resistivity [log (Ohm.cm)] ENSACO® 250 G ENSACO® 350 G ENSACO® 250 G ENSACO® 350 G ENSACO® 250 G ENSACO® 350 G 13 TYpICAL AppLICATIonS FoR EnSACo® ConduCTIvE CARBon BLACk
Page 1 and 2: Carbon Additives for Polymer Compou
Page 3 and 4: Contents EnSACo® Conductive Carbon
Page 5 and 6: Introduction to TIMREX® Graphite a
Page 7 and 8: EnSACo® Conductive Carbon Black fo
Page 9 and 10: EnSACo® Conductive Carbon Black TI
Page 11: EnSACo® ConduCTIvE CARBon BLACkS I
Page 15 and 16: nBR ConduCTIvE HoSE CoMpound A B Co
Page 17 and 18: power cables and accessories Conduc
Page 19 and 20: Incorporation of graphite powder in
Page 21 and 22: InFLuEnCE oF TIMREX®GRApHITE And C
Page 23 and 24: THERMALLY ConduCTIvE poLYMERS Therm

Brochure: Carbon Additives for Polymer Compounds - Timcal Graphite

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