Compatibility Estimation of Oligobutadienediol with Simple Oligoetherpolyols for Molded Polyurethane Compositions Development
This article includes the results of compatibility of oligomeric hydroxyl-containing butadienerubber with oligoetherpolyols on the basis of propylene oxide (Laprols). The compatibility limits of liquid hydroxyl-containing butadiene rubber of Krasol LBH-3000V brand with polypropyleneglycols of Laprol brand with different molecular weights were determined.
Composites of Reduced Flammability Based on Amorphous Elastic Polyurethane and Halogen-containing Flame Retardant
The effect of a mixture of halogen-containing fl ame retardants based on chloroparaffins and 1,1,9-trihydroperfl uorononanol-1 immobilized on a montmorillonite carrier on the character of reducing the fl ammability of polyurethane was studied. Using X-ray diffraction and sol-gel analysis, the structural and morphological features of the elastomers obtained were studied. It has been revealed that intercalation of macromolecular chains of a matrix amorphous polymer into the intralayer spaces of a fl uorine-containing organoclay occurs with an increase in a degree of structural perfection of the macromolecular system that contributes to an increase in the fire resistance of the resulting polyurethane composites.
Operating Characteristics of Diene-Urethane Elastomers on the base of NISSOG 3000 Oligodienediol
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.