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Titolo:
Polyurea/polysiloxane ceramer coatings
Autore:
Ni, H; Simonsick, WJ; Skaja, AD; Williams, JP; Soucek, MD;
Indirizzi:
N Dakota State Univ, Dept Polymers & Coatings, Fargo, ND 58105 USA N Dakota State Univ Fargo ND USA 58105 rs & Coatings, Fargo, ND 58105 USA DuPont Marshall Res & Dev Lab, Philadelphia, PA 19146 USA DuPont Marshall Res & Dev Lab Philadelphia PA USA 19146 hia, PA 19146 USA
Titolo Testata:
PROGRESS IN ORGANIC COATINGS
fascicolo: 2, volume: 38, anno: 2000,
pagine: 97 - 110
SICI:
0300-9440(200005)38:2<97:PCC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRUCTURE PROPERTY BEHAVIOR; HYBRID MATERIALS; MASS-SPECTROMETRY; SILANES; CONDENSATION; ALKOXYSILANE; HYDROLYSIS; IONIZATION; SILICATES; GLASSES;
Keywords:
tetraethylorthosilicate; isocyanate; polyurea; polysiloxane; coatings; viscoelastic properties; thermal properties;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Soucek, MD N Dakota State Univ, Dept Polymers & Coatings, Fargo, ND 58105 USA N Dakota State Univ Fargo ND USA 58105 gs, Fargo, ND 58105 USA
Citazione:
H. Ni et al., "Polyurea/polysiloxane ceramer coatings", PROG ORG C, 38(2), 2000, pp. 97-110

Abstract

Tetraethylorthosilicate (TEOS) oligomers were prepared through the hydrolysis and condensation of TEOS with water. The mixture of TEOS oligomers was characterized by FT-IR, Si-29 NMR and electrospray ionization-mass spectrometry (ESI-MS). The ESI-MS and 29Si NMR data show molecular weight ranges from 400 to 2000 g/mol and many cyclic species exist in addition to linear oligomers. The mechanical and tensile properties were evaluated as functions of TEOS oligomer concentration and silane-functionalized isocyanurate concentration. In addition, viscoelastic properties, thermal properties and morphology of the ceramer coatings were investigated using dynamical mechanicalthermal analysis (DMTA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) with energy dispersion X-ray analysis (EDAX). The data showed that ceramer coating properties were affected by both TEOSoligomer content and silane-functionalized isocyanurate content. Also, theadhesion was enhanced by incorporating the TEOS oligomers into the polyurea/polysiloxane coatings. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 13:31:43