Download Clay-Containing Polymeric Nanocomposites Volume 2 by L. A. Utracki PDF

By L. A. Utracki

This is often half 2 of a half set. half 1 ISBN is 1859574823

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41) System PA-6 (extruded) Note: *Notched Izod impact strength at room temperature. g. xy) = σ/wσPA-6 by -OH groups, which may react with PA-6. For comparison, the properties of exfoliated PA-6/MMT system with 2 wt% organoclay are also shown. The reduced properties are shown in parentheses. These were calculated as: Pr ≡ P(CPNC)/[P(PA-6) × w(clay)] (177) where P is a property and w is clay content in wt%. The outcome is quite surprising as the commercial PA-6/MMT system shows the worst performance.

First, the organoclay was prepared by co-intercalation of quaternary ammonium and epoxy into Na-MMT. 80 meq/g) was dispersed in hot water then a solution of trimethyl hexadecyl ammonium bromide (3MHDA) was added. The precipitate was dried, ground and mixed in an internal mixer with a diglycidyl ether of bisphenol-A (DGEBA, MW = 360). The final organoclay composition was: MMT = 67, 3MHDA = 20 and epoxy = 13 wt%. 77, respectively. The epoxy evidently diffused into the interlamellar galleries, thus a chemical reaction or at least some favourable interaction between MMT-3MHDA and epoxy must have occurred.

The complex is made of clay intercalated with liquid rubber, having positively charged groups. 0 nm. Furthermore, it is important that the liquid rubber of the complex is miscible with the solid rubber. , 1,2-polybutadiene, SBS, SIS) or blends. A diene rubber is preferred for co-vulcanisation with the liquid rubber. This structure is responsible for the composite material having superior mechanical characteristics, oil resistance, fatigue resistance, and processability. When CPNC with a vinyl polymer matrix is prepared, it is desirable to use onium salt having a terminal vinyl group.

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