Scholarlink

<p>In this paper, <i>Myrica esculenta</i> extract (MET) was used to modify the urea–formaldehyde (UF) resin. The optimal amount of MET is determined by considering the basic properties of the resins and the bonding strength and formaldehyde emission of the plywood. The thermal curing and degradation behavior of the resins were also studied by differential scanning calorimetry (DSC) and thermal degradation analysis (TG), respectively. The results indicated that the formaldehyde release of UF resin was significantly reduced by adding MET. The optimal loading level of MET was 2%, the formaldehyde emission and bonding strength of MET modified UF are 0.21&#xa0;mg&#xa0;L<sup>−1</sup> and 1.23&#xa0;MPa, which was 83% lower and 18% higher than that of UF, respectively. The addition of the MET led the UF resin easier to cure. MET had no significant effect on the thermal stability of UF resins. However, MET has a significant effect on the thermal degradation mechanism of UF resins. MET was an efficient modifier to improve the properties of UF resin.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The thermal curing and degradation properties of urea–formaldehyde resin modified by Myrica esculenta extract

  • 期刊论文

  • 发表日期：

    2025年4月10日

查看全文
  • Wenyu Zheng,
  • Siyun Du,
  • Ruoyi Gan,
  • Jiangqun Ma,
  • Xuezhen Peng,
  • Yongqian Yang,
  • Yuzhu Chen,
  • Hui Xiao

摘要

In this paper, Myrica esculenta extract (MET) was used to modify the urea–formaldehyde (UF) resin. The optimal amount of MET is determined by considering the basic properties of the resins and the bonding strength and formaldehyde emission of the plywood. The thermal curing and degradation behavior of the resins were also studied by differential scanning calorimetry (DSC) and thermal degradation analysis (TG), respectively. The results indicated that the formaldehyde release of UF resin was significantly reduced by adding MET. The optimal loading level of MET was 2%, the formaldehyde emission and bonding strength of MET modified UF are 0.21 mg L−1 and 1.23 MPa, which was 83% lower and 18% higher than that of UF, respectively. The addition of the MET led the UF resin easier to cure. MET had no significant effect on the thermal stability of UF resins. However, MET has a significant effect on the thermal degradation mechanism of UF resins. MET was an efficient modifier to improve the properties of UF resin.