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Synthesis and Characterization of Unmodified and Modified Resole Phenolic Resins

机译:未改性和改性的羟基酚醛树脂的合成与表征

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Resole phenol-formaldehyde resins have been widely used in various applications due to their outstanding physical and chemical properties of flame retardancy, solvent resistance, thermal stability, and rigidity. However, major disadvantages have been associated with the synthesis of the resins. One disadvantage includes the toxic effects of the phenol and formaldehyde chemical precursors on the human health. In order to create less hazardous materials, the current research was geared towards finding alternate materials to serve as replacements for the phenol precursor of a resole phenol- formaldehyde resin. The current study explored the use of pyridoxine and 3-hydroxypyridine as alternate replacements for the phenolic precursor. Thermogravimetric analysis (TGA) was used to observe the thermal and thermo-oxidative stabilities. The thermal decomposition kinetic parameters of the materials were determined from TGA curves using the Madhusudanan-Krishnan-Ninan (MKN) method.
机译:由于它们的突出性,耐溶剂性,热稳定性和刚性的优异的物理和化学性质,Resole酚醛树脂已被广泛用于各种应用中。然而,主要缺点与树脂的合成有关。一个缺点包括苯酚和甲醛化学前体对人体健康的毒性作用。为了产生较少的危险材料,目前的研究旨在寻找可选的材料,以作为脱氧酚醛树脂的苯酚前体的替代品。目前的研究探讨了吡哆醇和3-羟基吡啶作为酚醛前体的交替替代品。热重分析(TGA)用于观察热和热氧化稳定性。使用Madhusudanan-Krishnan-Ninan(MKN)方法从TGA曲线确定材料的热分解动力学参数。

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