Fabrication of nano-cupric oxide in phenol-formaldehyde resin adhesive: synthesis, curing characteristics, and morphology
Fabrication of nano-cupric oxide in phenol-formaldehyde resin adhesive: synthesis, curing characteristics, and morphology
复制标题
酚醛树脂胶粘剂中纳米氧化铜的制备：合成、固化特性和形貌
DOI：
10.1007/s00226-019-01106-y
复制
发表时间：
2019
影响因子：
3.4
通讯作者：
Du Guanben
中科院分区：
文献类型：
--
作者：
Zhao Sisi;Gao Wei;Yi Tengfei;Guo Congnan;Zhan Ke;Du Guanben
为了探索降低纳米氧化铜（CuO）改性酚醛（PF）树脂成本的可能性，在一个系统中同时进行PF树脂合成和利用不同铜盐制备纳米CuO。评估了改性 PF 树脂粘合定向刨花板 (OSB) 的固化动力学、形态以及物理机械性能。纳米CuO对PF树脂的固化反应表现出积极的影响，其特点是反应活化能显着降低。 X射线衍射和透射电子显微镜测试表明，所得纳米CuO具有纳米和微米尺度。在扫描电子显微镜图像中观察到纳米 CuO 的四种不同类型的晶体结构，根据其铜盐的不同而变化。用这些树脂样品制备的胶合 OSB 的耐水性和粘合强度表明，纳米 CuO 对板材的机械性能有积极的影响。该系统有潜力应用于工程木基复合材料的制造。
To explore the possibilities of reducing the costs of nano-copper oxide (CuO)-modified phenol–formaldehyde (PF) resin, PF resin synthesis and nano-CuO preparation utilizing different copper salts were carried out simultaneously in one system. The curing kinetics, morphology, as well as physical and mechanical properties of modified PF resins-bonded oriented strand boards (OSB) were evaluated. Nano-CuO showed a positive effect on the curing reaction of the PF resin, characterized by a significant decrease in the activation energy of the reaction. X-ray diffraction and transmission electron microscopy tests showed that the derived nano-CuO was in nano- and microscale. Four different types of crystal structure of the nano-CuO, varied according to their copper salts, were observed in scanning electron microscopy images. The water resistance and bonding strength of glued OSB prepared with these resin samples indicated that the influence of nano-CuO on the mechanical properties of the boards was positive. This system has the potential to be applied to the engineered wood-based composites manufacturing.