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为了研究杉木苯酚液化工艺过程中液化产物动态黏弹性的变化规律,采用动态黏弹性分析(DMA)方法,在频率1、10、50Hz,温度-120～100℃条件下,测定了不同液化工艺因素制备的杉木苯酚液化产物的存储模量E′和损耗因子tgδ温度谱和频率谱,讨论了液化工艺因素对杉木苯酚液化产物动态黏弹性的影响。结果表明:在测试温度范围内液化产物存在一个玻璃转化温度Tg;0～50℃范围内有一个α′松弛过程,50～100℃范围内有一个α″松弛过程,且α″松弛过程的活化能高于α′的活化能,α′的活化能随着液化时间增加而增大,α″的活化能则随着苯酚与杉木质量比的增加而减小。
In order to study the dynamic viscoelasticity of liquefaction products during the phenol liquefaction process of Chinese fir, the dynamic viscoelasticity (DMA) method was used to measure the different liquefaction process factors at the frequency of 1, 10, 50 Hz and the temperature of -120 ~ 100 ℃ The effects of liquefaction process factors on the dynamic viscoelasticity of the liquefied phenol of liquefied cedar were also discussed in terms of the storage modulus E ’and the loss tangent tgδ temperature and frequency spectra of the liquefied products. The results show that there is a glass transition temperature (Tg) for the liquefied product in the test temperature range, an α ’relaxation process in the range of 0 ~ 50 ℃, an α “relaxation process in the range of 50 ~ 100 ℃, and the activation of α” relaxation process The activation energy of α ’increases with the increase of liquefaction time, and the activation energy of α’ ’decreases with the mass ratio of phenol to Chinese fir.