The improvement of durability of Marine Wood with polymer and its mechanism
(0) In order to improve the durability of marine wood against the long long-term marine corrosion, the study explores to use two bifunctional reagents, maleic anhydride (Man) and glycid glycidyl yl methacrylate(GMA), to react with wood by impregnating them into the porous structure of wood and further initiating them to polymerize with an initiator, AIBN, through a heat process. After the fter above modification, the durability of the marine wood treat treated with polymer was tested, and its ed mechanism was further analyzed as well. The testing results of the durability show that the acid resistance, the alkali resistance, the decay resistance against marine borers and the dimensional stability of the treated wood increases by 2.02 times, 12.39 times, 4.96 times and 3 times over untreated wood, respectively; and its Anti Swelling Efficiency (ASE) for dimensional stability reaches 53％, which almost equals the value of the wood treated by PEG PEG-1500 under the same condit condition, while its leachability resistance is greatly higher than wood treated by PEG on, PEG-1500. The analysis result with FTIR indicates that Man and GMA both react with wood, and Man reacts with the hydroxyl group of wood cell walls by its anhydride group group, a , and GMA polymerizes in the porous nd structure of wood. The charactering result with SEM reveals that the resultant polymer fill fills in wood cell lumina as a solid form, which contact contacts tightly the wood cell walls without obvious gap gaps. The he greatly reducing amount of hydroxyl groups after the reaction and the heavy jamming channels for water and marine borers approaching to wood cell walls both contribute to the improving durability of the modified wood.
Polymer Wood Durability Improvement Mechanism
Li Yongfeng Liu Yixing Wang Xiangming Li Xiurong
Key Laboratory of Bio Bio-based Material Science and Technology of Ministry of Education, Northeast Key Laboratory of Bio Bio-based Material Science and Technology of Ministry of Education, Northeast
国际会议
青岛
英文
1021-1024
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）