生物质热解液化产物制备酚醛树脂研究进展

Research Progress on Production of Phenolic Resins from Products of Biomass Pyrolysis & Liquefaction

在介绍热解制备富含酚类物质液化产物的生物质原料的基础上,综述了快速热解油、真空热解油、高压热解油、常压苯酚液化产物、木质素酚解产物及生物油抽提分离产物等生物质热解液化产物制备酚醛树脂及其应用现状,并指出了生物质热解液化产物替代酚类化合物制备酚醛树脂存在成本较高、反应活性较低、尺寸稳定性较差等问题,利用造纸黑液木质素与树皮制备酚醛树脂将成为重要方向。

The utilization of liquids from pyrolysis and liquefaction of biomass and related materials for substituting synthetic phenolic compounds in phenolic resins are reviewed. Many biomass feedstocks could be used as sources of pyrolysis and liquefaction for production of pyrolysis liquids enriched in phenolics, such as hardwood and softwood, bark, residual lignins and agricultural wastes. Resins have been prepared utilizing either the whole liquid product, or a phenolics-enriched fraction obtained after further processing, such as fast-pyrolysis oil, vacuum-pyrolysis oil, high-pressure pyrolysis oil, liquefied products from biomass in phenol and phenolysized lignin. These resins were primarily employed in the manufacture of wood panels and their properties were also discussed. The problems of pyrolysis liquids for substituting synthetic phenolic compounds in the resins and the development trend in the future were pointed out.