Paper Title:
Preparation and Mechanical Properties of Polyurethane Elastomer with Two Soft Segments of HTPB/PTMG
  Abstract

In this paper, a series of polyurethane elastomers (PUE) were prepared employing casting method using toluene diisocyanate (TDI), hydroxy-terminated butadiene-acrylonitrile copolymer(HTBN) and polytetrahydrofuran glycol (PTMG) as the main raw materials, and using 2,4- and 2,6- dimethylthioaromatic diamine (DMTDA) as a chain extender. The effects of the content of NCO in PUE (NCO%), mass ratio of HTBN/PTMG, molecular weight of PTMG, dosage of chain extender and heat treatment on the mechanical properties of PUE were studied. The results showed that the lower molecular weight of PTMG and the higher heat treatment temperature were both favorable for increasing the mechanical properties of PUE. When the mass ratio of HTBN/PTMG was 35:65, NCO% was 6.0%, molar ratio of NCO/NH2 was 1.20 and heat treatment time was 2h at 115 , the mechanical properties of PUE were best.

  Info
Periodical
Advanced Materials Research (Volumes 150-151)
Edited by
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Pages
1689-1692
DOI
10.4028/www.scientific.net/AMR.150-151.1689
Citation
H. T. Tao, X. J. Liu, T. N. Ma, "Preparation and Mechanical Properties of Polyurethane Elastomer with Two Soft Segments of HTPB/PTMG", Advanced Materials Research, Vols. 150-151, pp. 1689-1692, 2011
Online since
October 2010
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Price
$32.00
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