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杉木苯酚液化物合成热固型酚醛树脂的研究 被引量:19

Studies on Synthesis of Resol Phenol-formaldehyde Resin from Liquefied Chinese Fir Wood in Phenol
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摘要 以杉木为研究树种,对比不同料液比(木材与苯酚质量比)液化物与甲醛在碱性环境中反应,进行热固酚醛树脂制备试验。考察不同甲醛与苯酚物质的量之比值(rF/P)、氢氧化钠与苯酚物质的量之比值(rNaOH/P)和树脂化温度对树脂理化性能的影响。结果表明,采用料液比为1∶2的液化物,rF/P1.8,rNaOH/P0.7,树脂化温度80℃条件下合成的杉木液化物树脂压制的杨木三层胶合板满足I类胶合板强度要求,各项物理力学性能与常规PF树脂压制的板材相当,板材的甲醛释放量为0.1 mg/L,远低于GB/T 9846-2004《胶合板》中的E0级要求。 In this study, we aimed to synthesize resol phenol-formaldehyde resin from the liquefied Chinese Fir( Cunninghamia lanceolata ) wood in phenol with different ratio of wood to phenol in presence of sulfuric acid as catalyst. The effects of ratio of formaldehyde to phenol (rF/P) , ratio of NaOH to phenol (rnaon/p) and resinifieation temperature on chemical properties of liquefied wood resins (LWR) were investigated. The resol phenol-formaldehyde adhesive could be prepared from liquefied wood (wood: phenol = 1 : 2) in phenol at rFvP 1.8, rNaon/p O. 7 and resinification temperature 80 ℃. The physical properties of the poplar three-layer plywood bonded with LWR were similar to those with normal PF resins and also satisfied the demands of I level. Free formaldehyde content of plywood (0.1 rag/L) was lower than the Eo level set by GB/T 9846 -2004 Plywood.
出处 《生物质化学工程》 CAS 2007年第5期9-12,共4页 Biomass Chemical Engineering
基金 北京市教委与地方共建项目(JD100220534) 948计划资助项目(2006-4-107) 北京林业大学研究生自选课题基金资助项目(05jj086)
关键词 苯酚 酚醛树脂 液化 胶合板 phenol phenol-formaldehyde resin liquefaction plywood
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参考文献11

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