Filler for SBR

Albaglos. [Pflzer] Prec itated calcium carbonate rdnfocing filler for SBR, NR, CR, HR, vinyl plasdsols, resins for extrusions, mtddings, pUntisols,... 

Beaverwhite. [Cyjxus Industrial Min.] Magnesium silicate (talc) dusting agent for SR bales and crumbs filler for SBR and NR foams, plastic resins. 

A short study was made as to the ability of these reactive particles to act as reinforcing fillers for elastomers. A styrenic filler with peracetate functionality was substituted for a high abrasion furnace black in a typical SBR formulation. Only 28 phr of the styrenic filler was used as compared to 40 phr of the carbon black to compensate for the density differences. As can be seen by the results of Table 9, the reactive styrenic particle acts as a reinforcing filler for SBR. 

The underlying nonlinearity function m (A). which is independent of the type of deformation, is very similar for different amorphous rubbers. For SBR, it is independent of the cross-link" density over moderate changes in cross-link density (62) and independent of the temperature down to —40°C, a temperature where the modulus has increased by a factor of 2 to 3 over the room-temperature value (61). The function A) is insensitive to the presence of moderate amounts of carbon black filler for strains up to about 100% (63). 

Fig. 42 Modified Kraus plots for the three sets of filler for a NR and b SBR swollen in benzene. See text for details...

Figure 12.5. Volume resistivity against filler loading for SBR composites filled with carbon black (CB Ensaco 250G from Timcal) and MWNTs. [Figure 5A is reprinted from L. Bokobza, M. Rahmani, C. Belin, J.-L. Bruneel, N.-E. El Bounia "Blends of carbon blacks and multwall carbon nanotubes as reinforcing fillers for hydrocarbon rubbers", Journal of Polymer Science Part B Polymer Physics, 46,1939, 2008, permission from John Wiley and Sons].

CryOfine . [Midwest Elastomers] Cryo-genically ground fine particle rubber (butyl, EPDM, neoprene, nitrile, SBR, mixed and natural rubbm) filler for rubber compding. 

Magnum-White. [RMc Minerals] Magnesium hydroxide/calcium carbonate blend fire retardant smoke suppressant filler for PVC compds., SBR-latex formulations. 

Higher a/n values were obtained for SBR and NBR, the aromatic stmcture in SBR and the polar—CN group in NBR clearly influencing black-filler interaction. 

CAS 1327-36-2 EINECS/ELINCS 215-475-1 Uses Extender for titanium dioxide reinforcing filler for NR, SR (esp. CR, SBR, NR-SBR blends), resins, adhesives, coatings, plastics Properties Fine particle size 0.5 particle size 0.01% max. on 325 mesh sp.gr. 2.63 bulking value 0.0456 oil absorp. 43 brightness (GE) 87% pH 4.8 ref. index 1.56 Burgess No. 20 [Burgess Pigment]... 

CAS 21645-51-2 EINECS/ELINCS 244-492-7 Uses Smoke suppressant, flame retardant, filler for PVC and XLPE wire/ cable insulation, SBR compds., epoxies, silicones, elastomers, neoprene foam, vinyl sheet flooring, adhesives, coatings, paints, polishes Pn rerties Superfine powd. 3.5 p avg. particle diam. sp.gr. 2.42 surf, area 8 m /g oil absorp. 32 brightness (TAPPI) 95 ref. index 1.57 hardness (Mohs) 2.5-3.5... 

Chem. Descrip. Precipitated calcium carbonate CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Reinforcing agent, filler for rubber (SBR, NR, NR, CR), PVC plasti-sols, paints/coatings, extruded and molded goods, adhesives, sealants, sundries... 

Uses Pigment extender for inks, piastics, polishes, aq. and solv. coatings TiOj extender and reinforcing filler for EPDM, SBR, nitrile, PVC, and most other polymers... 

Fig. 5.8 Fracture resistance of filler-reinforced SBR/BR blends as a function of the macro dispersion index DI DI was determined by a light-microscopic investigation and is a measure for the number of filler agglomerates being larger than 3-5 pm.

The tensile strength of filled elastomers over the tensile strength of the gum rubber is much greater for SBR. A greater increase in tensile strength is attainable for non-crystallizable polymers. Filler distribution is also affected by filler type. Elaborating ... 

---