流变仪
胶粘剂
差示扫描量热法
固化(化学)
材料科学
流变学
动力学
甲醛
复合材料
聚合
聚合物
热力学
有机化学
化学
物理
图层(电子)
量子力学
作者
Latifeh Nasseri,Catherine Rosenfeld,Pia Solt-Rindler,Roland Mitter,Johann Moser,Andreas Kandelbauer,Johannes Konnerth,Hendrikus W. G. van Herwijnen
标识
DOI:10.1080/00218464.2023.2300453
摘要
Comparative analysis of the chemical and rheological curing kinetics of formaldehyde-based wood adhesives is crucial for assessing their respective performance. Differential scanning calorimetry (DSC) and rheometry are the conventional techniques used for monitoring the curing processes leading to crosslinking polymerization of the adhesives. However, the direct comparison of these techniques is inappropriate due to the intrinsic differences in their underlying procedures. To address this challenge, the two adhesive samples were sequentially cured, firstly with rheometry and followed by DSC. The observed higher curing degree in the subsequent DSC procedure underpins the incomplete curing of the samples during initial rheometry. Furthermore, the comparative assessment of the activation energies, molar ratios, and active groups of the two adhesives highlights the importance of the pre-exponential factor in addition to the activation energies, as it attributes to the probability of active groups coinciding at the appropriate spatial arrangement.
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