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Improving Thermal Stability of Polyurethane through the Addition of Hyperbranched Polysiloxane

Liu, Shang-Hao ; Shen, Ming-Yuan ; Kuan, Chen-Feng ; Kuan, Hsu-Chiang ; Ke, Cing-Yu ; Chiang, Chin-Lung

Polymers, 2019-04, Vol.11 (4), p.697 [Periódico revisado por pares]

Switzerland: MDPI AG

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Título:
Improving Thermal Stability of Polyurethane through the Addition of Hyperbranched Polysiloxane
Autor: Liu, Shang-Hao ; Shen, Ming-Yuan ; Kuan, Chen-Feng ; Kuan, Hsu-Chiang ; Ke, Cing-Yu ; Chiang, Chin-Lung
Assuntos: Aminopropyltriethoxysilane ; Diisocyanates ; Fourier transforms ; Functional groups ; Heat resistance ; Hydrochloric acid ; Mechanical properties ; Nanoparticles ; Nitrogen ; NMR ; Nuclear magnetic resonance ; Polydimethylsiloxane ; Polymers ; Polysiloxanes ; Polysilsesquioxanes ; polyurethane (PU), siloxane ; Polyurethane resins ; Prepolymers ; Sol-gel processes ; Solvents ; sol–gel technology ; Spectrum analysis ; Thermal stability ; thermogravimetric analysis ; Viscosity
É parte de: Polymers, 2019-04, Vol.11 (4), p.697
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Polydimethylsiloxane with hydroxy groups was functionalized to form functionalized polydimethylsiloxane, which subsequently underwent an addition reaction with isophorone diisocyanate to form the prepolymer. Next, 3-aminopropyltriethoxysilane (APTS) reacted with 3-glycidoxypropyltrimethoxysilane (GPTS) to produce bridged polysilsesquioxanes, and sol-gel technology was employed to form hyperbranched polysiloxane nanoparticles with hydroxy groups, APTS-GPTS, which was used as the additive. The hyperbranched polysiloxane and the prepolymer containing NCO functional groups then underwent an addition reaction to produce the hybrid materials. Fourier-transform infrared spectroscopy and Si nuclear magnetic resonance were used to characterize the structure of the polyurethane hybrid. Regarding thermal stability, after the hyperbranched polysiloxane nanoparticles was introduced, the integral procedural decomposition temperature increased from 348 °C for polyurethane matrix to 859 °C for the hybrid material. The results reveal that the thermal stability of the hybrid material substantially increased by approximately 247%.
Editor: Switzerland: MDPI AG
Idioma: Inglês

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Improving Thermal Stability of Polyurethane through the Addition of Hyperbranched Polysiloxane

Liu, Shang-Hao ; Shen, Ming-Yuan ; Kuan, Chen-Feng ; Kuan, Hsu-Chiang ; Ke, Cing-Yu ; Chiang, Chin-Lung

Switzerland: MDPI AG

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