Polyurethane Elastomers Based on Oligobutadienediol with a 1,2-Structure of Double Bonds

et al. 2017

The article is devoted to regularity defining of curing oligomers, and prepolymers with hydroxyl and isocyanate groups and double bonds reactive oligomers. The features of the spatial structure of elastic polyurethane based oligomers and prepolymers with the definition of the physical and chemical bonds share, as well as the chain interval length between grid points were researched. The possibility of oligodiendiole curing in the presence of a methacrylate component on the mechanism of radical polymerization was experimentally confirmed. To achieve the objectives rheokinetic method of analysis (rotational viscometer), thermometric and iodometric methods, IR spectroscopy, differential scanning calorimetry were used.

Section: Introductionmentioning

confidence: 99%

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

Medvedev¹,

Vaniyev²,

et al. 2017

“…Considerable amount of mono-and nonfunctional molecules builds some limitations for getting polyurethanes of a certain qualities. This predetermined the necessity of new development of SKDP-N based elastomers with a technical value by the usage of components excluding all the deficiencies 1,2 .…”

Section: Introductionmentioning

confidence: 99%

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

Medvedev¹,

Vaniyev²,

et al. 2017

The research results given in this article are predetermined by the necessity of research intensification aimed at finding alternatives reactive oligomers for expanding the range of available compositions of such purpose. At the assessment of technics level in the area of binders for synthetic sports surfaces promising use of the above products as reactive oligomers and prepolymers for the realization of free-form molding surfaces was found.

“…Previously, during the studying oligobutadiene rubber curing characteristics with hydroxyl functional groups it was found that the use of CBA allows extending molecular chains with hydroxyl end groups, which significantly improves the structural parameters of the grid and increase the elastic-strength properties of obtained polidieneurethanes 1,2 .…”

Section: Introductionmentioning

confidence: 99%

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

Medvedev¹,

Vaniyev²,

et al. 2016

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.