文化大學機構典藏 CCUR:Item 987654321/44633
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    题名: Preparation and Characteristics of an Environmentally Friendly Hyperbranched Flame-Retardant Polyurethane Hybrid Containing Nitrogen, Phosphorus, and Silicon
    作者: Chen, CH (Chen, Chin-Hsing)
    Chiang, CL (Chiang, Chin-Lung)
    贡献者: 化學工程與材料工程學系暨奈米材料研究所
    关键词: THERMOPLASTIC POLYURETHANE
    THERMAL-DECOMPOSITION
    BEHAVIOR
    DEGRADATION
    FOAMS
    日期: 2019-04
    上传时间: 2019-06-25 11:42:34 (UTC+8)
    摘要: The NCO functional group of 3-isocyanatoproplytriethoxysilane (IPTS) and the OH functional group of 10-(2,5-dihydroxyphenyl)-10H-9-oxa-10-phospha-phenantbrene-10-oxide (DOPO-BQ) were used to conduct an addition reaction. Following completion of the reaction, triglycidyl isocyanurate (TGIC) was introduced to conduct a ring-opening reaction. Subsequently, a sol-gel method was used to initiate a hydrolysis-condensation reaction on TGIC-IPTS-DOPO-BQ to form a hyperbranched nitrogen-phosphorous-silicon (HBNPSi) flame retardant. This flame retardant was incorporated into a polyurethane (PU) matrix to prepare a hybrid material. Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), limiting oxygen index (LOI), UV-VIS spectrophotometry, and Raman analysis were conducted to characterize the structure and analyze the transparency, thermal stability, flame retardancy, and residual char to understand the flame retardant mechanism of the prepared hybrid material. After the flame retardant was added, the maximum degradation rate decreased from -36 to -17 wt.%/min, the integral procedural decomposition temperature (IPDT) increased from 348 to 488 degrees C, and the char yield increased from 0.7 to 8.1 wt.%. The aforementioned results verified that the thermal stability of PU can be improved after adding HBNPSi. The LOI analysis indicated that the pristine PU was flammable because the LOI of pristine PU was only 19. When the content of added HBNPSi was 40%, the LOI value was 26; thus the PU hybrid became nonflammable.
    關聯: Polymers 2019, 11(4), 720
    显示于类别:[化學工程與材料工程學系暨碩士班] 期刊論文

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