vulcanization

The Effect of Composition and Structure of NBR-Based Elastomer Blends in the Vulcanization Process and Study of Their Aging by Exposure to Heat and Radiation

The vulcanization process of elastomeric blends based on chlorinated aromatic nitrile-butadiene rubber (SKN-40M) has been studied in the present work. The structural parameters (molecular weight, plasticity, rigidity, number of network chains, cross-linked molecules) in thermovulcanizates were investigated on an example of nitrile-butadiene rubber blend with polyvinyl chloride using viscometry and the sol-gel process.

The Evaluation of bis(4-Methylphenylsulfonyldithiocarbimato)zincate (II) (ZNIBU) Activity in the Vulcanization of NBR Compounds and its Effect on their Mechanical Properties

The effect of accelerator type on the vulcanization process and mechanical properties of nitrile rubber (NBR) compounds was investigated. Three commercial accelerators were selected, N-N-t-butyl-2-benzothiazole sulfenamide (TBBS), tetramethylthiuram disulfide (TMTD) and bis(dimethyldithiocarbamato)zinc (II) (ZDMC) and compared with the compound bis(4 methylphenylsulfonyldithiocarbimato)zincate (II) (ZNIBU). Surprisingly, it was found that the optimum vulcanization time for ZNIBU showed better results than for TBBS.

Vulkanization Peculiarities of Rubbers of General and Special Purpose in the Presence of Zinccontaining Polymer-inorganic Composite

In this work the synthesis technology of zinccontaining polymer - inorganic composite on the basis of products of secondary raw material processing at joint precipitating with carbamide and formaldehyde (ZnCFO) is described. The structure and properties of ZnCFO are investigated by the differential-thermal analysis, electronic microscopy, and IR-spectroscopy. The action of ZnCFO as vulcanization active component of elastomeric compositions on the basis of rubbers of general and special purpose with various vulcanization systems is investigated.