期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 136, 期 40, 页码 -出版社
WILEY
DOI: 10.1002/app.48011
关键词
adhesives; cellulose and other wood products; mechanical properties; resins; thermoplastics
资金
- BBI Horizon 2020 project Smart Technologies for the Conversion of Industrial Lignins into Sustainable Materials (SmartLi)
- AEP Polymers
- Andritz
- Clic Innovation
- Foresa
- Fraunhofer
- Kotkamills
- Metsa Fibre
- Prefere Resins Finland
- Sappi Netherlands
- Tecnaro
- VTT
- Horizon 2020 research and innovation program [668467]
- H2020 Societal Challenges Programme [668467] Funding Source: H2020 Societal Challenges Programme
Bonding kinetics of thermosetting adhesives is influenced by a variety of factors such as temperature, humidity, and resin properties. A comparison of lignin-based phenol formaldehyde (LPF) and phenol formaldehyde (PF) adhesive in terms of reactivity and mechanical properties referring to testing conditions (temperature, moisture of specimen) were investigated. For this purpose, two resins were manufactured aiming for similar technological resin properties. The reactivity was evaluated by B-time measurements at different temperatures and the development of bonding strength at three different conditions, testing immediately after hot pressing, after applying a cooling phase after hot pressing, or sample conditioning at standard climate. In addition, the moisture stability of the two fully cured resins was examined. The calculated reactivity index demonstrated that LPF requires more energy for curing than PF. Further results indicate that lignin as substituent for phenol in PF resin has a negative impact on its moisture resistance. Additionally, the known thermoplastic behavior of lignin could also be detected in the behavior of the cured resin. This behavior is relevant for the adhesive in use and necessitates a cooling phase before testing the bonding strength development of lignin-based adhesive systems. (c) 2019 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据