Automatic Continuous Online Monitoring of Polymerization reactions (ACOMP) successfully was used to measure the low and high shear reduced viscosity (RV) of Lion Elastomers’ ethylene propylene diene monomer rubber. The analyzed samples came from the production line and were measured quickly to simulate online measurement conditions as best as possible, such as hexane/cement elastomer mixture.

Ever greater attention in the rubber industry is being applied to effectively measuring the degree of silica dispersion that has resulted from established factory mixing procedures. 

Reinforcing filler such as carbon black and silica are used in synthetic and natural rubber to improve its properties. Compared to carbon black, mixing of silica in rubber compounds involves many difficulties due to the large polarity difference between silica and rubber. A bifunctional organosilane is commonly used as a coupling agent in enhancing the compatibility of silica and rubber.

This publication, part of a series on multidimensional control of extrusion lines, illustrates a method using a roller head line to control two classes of dimensions: thickness dimensions relative to their corresponding die dimensions; and width dimensions by manipulating the screw, roller and line speeds.

Denka recently launched Evolmer, a new elastomer with outstanding performance benefits. This paper examines its properties and performance.