Operating Characteristics of Diene-Urethane Elastomers on the base of NISSOG 3000 Oligodienediol

Abstract

The article is devoted to the research of the chain branching agent nature impact on the structure and type of vulcanization network crosslinks, the degree of crosslinking and the complex of physico-mechanical properties of polidienuretane on the basis of NISSOG 3000 oligomeric rubber was researched. Interdependence of structural parameters of elastomeric netting and elastic strength properties of the hardened materials was determined. It was defined that a significant contribution to the structure network formation is made by physical bonds due to intermolecular interaction. Using an aromatic diamine allows to increase the share of physical links and ratio of reactive functional groups. The possibility of physical-mechanical indicators of polydieneurethane vulcanization network varying by changing the ratio of reactive functional groups and the type of chain branching agent was proved. The resistance of polyurethane materials on the basis of oligodiendiols in the conditions of thermooxidative aging conditions and it was found that they have a fairly high thermooxidative stability.

Solidification Features of Butadiene and Piperylene Copolymers and Assessment of Thermal-Oxidative Stability of Elastic Polyurethane on its Basis

“…For the solving of new problems in the field of development and implementation of synthetic coatings it was decided to use oligomers of diene nature with hydroxyl reactive groups: SKDP-N (product of radical copolymerization of butadiene and piperylene in 50:50 proportion with the weight percentage of single-ended hydroxyl groups of 1.1%) and PDI-1K (product of copolymerization of divinyl and isoprene in proportion of 80:20 with the weight percentage of single-ended hydroxyl groups of 0,8 -1,0 %) 5 .…”

Untitled

“…Neomycin is a complex of antibiotics (neomycin A, B, C) formed during the life of the radiant fungus Streptomycessfradiae: in the form of sulfates they are part of the preparation neomycin sulfate. 7 The main component of the neomycin complex (more than 90%) is neomycin B, which has a small antimicrobial activity. The antibiotic is active against pathogenic staphylococci, corynebacteria, listeria, anthrax and most gram-negative bacteria (Escherichia coli, Shigella, Salmonella, etc.).…”

Oligomers Solidification Depending on the Nature, Molecular Mass, Type and Reactional Group Containing

“…Objective of this research phase consists, firstly, in the study of the curing process according to the nature and molecular weight of oligomers; secondly, in the research of the influence of type and content of reactive groups, the type and amount of hardener, elongation and branching agents to process urethane curing mechanism; thirdly, in the research capabilities and features curing oligodiendioles by polymerization mechanism in the presence of methacrylate containing compounds 4,5 .…”