| 高固体含量线性酚醛树脂的固化动力学 |
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| 引用本文： | 理莎莎,齐暑华,刘乃亮,曹鹏. 高固体含量线性酚醛树脂的固化动力学[J]. 高分子材料科学与工程, 2012, 0(4): 51-54 |
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| 作者姓名： | 理莎莎 齐暑华 刘乃亮 曹鹏 |
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| 作者单位： | 西北工业大学理学院应用化学系 |
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| 摘 要： | 合成了高固体含量(>85%)的线性酚醛树脂,经凝胶渗透色谱/多角度激光光散射(SEC/MALLS)联用仪测定其数均分子量为1577,且分子量分布范围较窄,-Mw/-Mn仅为1.127。采用差示扫描量热(DSC)分析技术在50℃~300℃温度范围内,以不同的升温速率(2.5℃/min、5℃/min、7.5℃/min和10℃/min)研究了该酚醛树脂的固化反应过程。结果表明,该高固体含量线性酚醛树脂的凝胶化温度Tgel=110.61℃,固化温度Tcure=129.14℃,后处理温度Ttreat=146.96℃;根据Kissinger方程、Ozawa方程和Crane方程以及n级动力学模型确定该树脂的固化动力学方程为dα(t)/dt=2.09×1017(1-α)0.95exp(-2.10235×104/T)。
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| 关 键 词： | 酚醛树脂 高固体含量 固化动力学 差示扫描量热法 分子量分布 |
Curing Kinetics of Novolac-Type Phenolic Resin with High Solid Content |
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| Shasha Li,Shuhua Qi,Nailiang Liu,Peng Cao. Curing Kinetics of Novolac-Type Phenolic Resin with High Solid Content[J]. Polymer Materials Science & Engineering, 2012, 0(4): 51-54 |
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| Authors: | Shasha Li Shuhua Qi Nailiang Liu Peng Cao |
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| Affiliation: | (Department of Applied Chemistry,School of Science,Northwestern Polytechnical University,Xi’an 710129,China) |
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| Abstract: | Novolac-type resin with high solid content(>85%) was synthesized,of which number average molecular weight is 1577 and distribution is narrow.The curing process was studied by differential scanning calorimetry(DSC) at different heating rates of 2.5 ℃/min,5 ℃/min,7.5 and 10 ℃/min between 50 ℃～300 ℃.The gelation temperature,curing temperature and post processing temperature of the resin are 136.68 ℃,163.16 ℃ and 197.39 ℃ respectively.According to Kissinger equation,Ozawa equation,Crane equation and the n-level kinetic model,the curing kinetic equation is dα(t)/dt=2.09×1017(1-α)0.95exp(-210235×103/T). |
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| Keywords: | novolac-type resin large solid content curing kinetics DSC molecular weight range |
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