Synthesis and thermal properties of [n]-polyurethanes
✍ Scribed by Stephan Neffgen; Jacqueline Kušan; Thomas Fey; Helmut Keul; Hartwig Höcker
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 93 KB
- Volume
- 201
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Various segmented polyurethanes with a hard segment content of about 50 wt% were prepared from 4,4′‐diphenylmethane diisocyanate (MDI), a poly(tetramethylene adipate) glycol with an __M__~n~ of 2000, and various combinations of aliphatic diols as chain extenders by a one‐shot, hand‐cast
Novel type of mesogenic chain extenders used in this study are N,NЈ-bis(4hydroxyphenyl)-3,4,3Ј,4Ј-biphenyldicarboxyimide (BPDI) and N, NЈ-bis[4-(6-hydroxyhexyloxy) phenyl]-3,4,3Ј,4Ј-biphenyldicarboxyimide (BHDI). BHDI has a flexible spacer of 6-methylene units but BPDI does not. The liquid crystalli
Based on polyoxyethylated amines ( M n Å 600, 1,200) derived from n-butyl amine and ethylene oxide, 4,4 -diphenylmethane diisocyanate, and different chain extenders, two series of polyether-polyurethane (PU) ionomers with reasonable mechanical properties were synthesized. Chain-extended by 1,4-butan
Thermal and mechanical properties of polyurethane (PU) sheets prepared from the glucose/fructose/sucroseÈpolyethylene glycol (PEG)È diphenylmethane diisocyanate (MDI) system were examined by di †erential scanning calorimetry, thermogravimetry, dynamic mechanical analysis and tensile tests. The sacch
The effects of five different types of fillers on the thermal and mechanical properties of hydroxyl-terminated polybutadiene-based polyurethane elastomers were explored to develop a filled polyurethane elastomeric liner for rocket motors with hydroxyl-terminated polybutadiene-based composite propell