College of Materials Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China.
College of Materials Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China.
Int J Biol Macromol. 2024 Jun;272(Pt 2):132602. doi: 10.1016/j.ijbiomac.2024.132602. Epub 2024 May 22.
Tung oil is commonly utilized for coating protection in wooden products, often attracting attention for its appearance, antimicrobial capabilities, and insect-resistant coatings. However, its poor mechanical properties and poor weather resistance stem from excessive self-crosslinking of surplus conjugated double bonds and molecular chains, resulting in poor film wrinkling. Therefore, this study introduces natural rubber via the Diels-Alder reaction to consume the residual double bonds in tung oil, resulting in tung oil/natural rubber composite coatings (NRTO) with excellent mechanical properties and weather resistance. The results indicate that NRTO exhibits excellent mechanical properties, including high elongation (32 %) and strong adhesion (4.55 MPa). Furthermore, NRTO demonstrates outstanding acid resistance and UV aging resistance. Given its many benefits, NRTO film emerges as a promising candidate for substantially protecting wood surfaces in demanding environments.
桐油常用于木制品的涂层保护，因其外观、抗菌性能和防虫涂层而受到关注。然而，其较差的机械性能和耐候性源于过剩共轭双键和分子链的过度自交联，导致漆膜起皱不良。因此，本研究通过 Diels-Alder 反应引入天然橡胶来消耗桐油中的剩余双键，从而制备具有优异机械性能和耐候性的桐油/天然橡胶复合涂料（NRTO）。结果表明，NRTO 具有出色的机械性能，包括高伸长率（32%）和强附着力（4.55MPa）。此外，NRTO 还表现出优异的耐酸和耐 UV 老化性能。鉴于其诸多优点，NRTO 薄膜有望成为保护恶劣环境下木材表面的一种有前途的材料。
