GENERAL INDEX wetting

However, when tested using ASTM F 1679 (the Variable Incidence Tribometer procedure), CCA pressure treated southern yellow pine showed slip index of 0.92 (dry wood) and 0.88 (wet wood) [ICC-ES Legacy Report NER-682], which is generally higher than slip resistance of WPC materials (Table 11.3). 

The production of activated carbon extrudates by steam activation does not follow the general scheme of Fig. 8. In this case, after crushing the raw mato ial is first devolatilized at high temperature and then finely pulverized, resulting in a powdered char. The powdered char is then mixed with appropiate binders to form a paste with lubricant properties, which is extruded. Normally several binders are used to form the paste because they each have different tasks a) to provide lubricant properties to allow the extrusion of the paste b) to transform the wet extrudates into hard and consistent short cylinders during the drying step (low temperature binder), and c) to act as a high temperature binder in the activation step. The type and composition of the hinder is a matter for further research, since the final hardness and abrasion index is dependent on the binders. Consequently, it is not unusual for them to be a mixture of three binders, each with a specific mission. 

Uses Wetting agent, dispersant for coil coatings, OEM, general industrial, med.-high solid one-pack systems, acid-catalyzed systems, inks Properties Sp.gr. 1.02 g/cc dens. 8.53 Ib/gal acid no. 52 flash pt. (Seta) 44 C ref. index 1,460 52% NV... 

Fig. 12. General effect of increasing styrene or vinyl concentrations in solution SBRs on abrasion index, processability and wet traction. Reproduced with permission from Rubber Industry.

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