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Polyurethane materials for passive isolation bearings

S. OPREA1,* , S. VLAD1

Affiliation

  1. Petru Poni” Institute of Macromolecular Chemistry Aleea Grigore Ghica Voda No.41-A, 700487, Iasi, Romania

Abstract

This work has been directed to both civil structures and nuclear facilities. Polyurethane elastomers (PEs) based on polyether diols and aliphatic and aromatic diisocyanates can be used as passive isolation bearings in building applications. In the present study polyeterdiol, aliphatic or aromatic d isocyanate have been used in polyurethanes, using glycerine, ethylene or diethylene glycols as chain extenders. The effect of varying the concentrations of diisocyanates and structure of chain extenders on PEs has been discussed in respect to mechanical properties. IR and thermal analysis techniques (TGA) were used for material characterization. The results reveal that aliphatic character of diisocyanates lowers the temperature required to achieve the flexibility in the polymer. Based on their mechanical properties, PEs has great potential for applications where wind and earthquake loads resistance, dynamic-to-static stiffness ratio and vertical and lateral load characteristics are required..

Keywords

Polyurethane elastomers, Passive isolation, Mechanical properties.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

S. OPREA, S. VLAD, Polyurethane materials for passive isolation bearings, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 675-681 (2006)