The thermal degradation of a polyurethane elastomer based on 4,4 -diphenylmethane diisocyanate, poly(ethyleneadipate) diol copolyester and extended with 1,4-butanediol has been studied by simultaneous thermogravimetry and differential scanning calorimetry analysis, in nitrogen atmosphere, up to 600
The influence of polychromic light on the surface of MDI based polyurethane elastomer
β Scribed by Dan Rosu; Constantin Ciobanu; Liliana Rosu; Carmen-Alice Teaca
- Book ID
- 108064090
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 275 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0169-4332
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
From conformational analysis, we have determined the two lowest energy crystal structures for the hard segments of 4,4Π-diphenylmethane diisocyanate/1,4butanediol (MDI/BDO)-based polyurethane elastomer. Both crystal forms give prominent X-ray scattering at Ο³7.6 Γ . In one crystal form, (1), there is
Thermoplastic polyurethane elastomers (TPUs) of constant composition were prepared by using the prepolymer method and by changing the reaction conditions (prepolymerization and chain-extension time) to study the influence of these conditions on the final TPU properties. The TPUs were characterized b