вулканізація

Rubber vulcanization was carried out in an oil bitumen environment. It was found that this method can be used to increase the elasticity of the binder. For the bitumen under study, the elasticity index was increased from 13.5% to 50.0%. The effects of the solvent (thinner) and stirring on the vulcanization process, particularly on the homogeneity of the resulting rubber-modified bitumen, were investigated.

Досліджено процес вулканізації еластомерних сумішей на основі хлорованого ароматичного нітрил-бутадієнового каучуку (СКН-40М). На прикладі суміші бутадієн-нітрильного каучуку з полівінілхлоридом досліджено структурні параметри (молекулярна маса, пластичність, жорсткість, кількість ланцюгів сітки, зшиті молекули) в термовулканізатах за допомогою віскозиметрії та золь-гель процесу.

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.

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.