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首页> 外文期刊>Journal of Applied Polymer Science >Resol-type phenolic resin from liquefied phenolated wood and its application to phenolic foam
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Resol-type phenolic resin from liquefied phenolated wood and its application to phenolic foam

机译：液化酚醛木的酚醛型酚醛树脂及其在酚醛泡沫塑料中的应用

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摘要

A liquefied wood-based resol resin was prepared with excellent yield by a reaction of liquefied wood and formaldehyde under alkaline conditions. The effects of various reaction parameters on the extent of the yield of the resol resin, unreacted phenol content, and viscosity were investigated. Milder resol resinification conditions were required as compared to those used in conventional methods. The liquefied wood-based resol resin was successfully applied to produce phenolic foam using appropriate combinations of foaming agents. Diisopropyl ether with a relatively higher boiling temperature was suitable for the foaming of liquefied wood-based resol resin. Hydrochloric acid and poly(ethylene ether) of sorbitan monopalmitate were used as a catalyst and a surfactant, respectively. The obtained foams showed satisfactory densities and compressive properties, comparable to those of foams obtained from conventional resol resin. Foams with low density were obtained by the blending of liquefied wood-based resol resin and conventional resol resin. (C) 2002 John Wiley Sons, Inc. [References: 14]
机译：通过在碱性条件下使液化的木材与甲醛反应，以优异的产率制备了液化的木质基甲阶酚醛树脂。研究了各种反应参数对甲阶酚醛树脂收率，未反应酚含量和粘度的影响。与常规方法相比，需要较温和的甲阶酚醛树脂化条件。使用适当的发泡剂组合，已成功地将液化的木质基甲阶酚醛树脂用于生产酚醛泡沫。具有相对较高沸点的二异丙醚适合于液化的木质基甲阶酚醛树脂的发泡。脱水山梨糖醇单棕榈酸酯的盐酸和聚（乙烯醚）分别用作催化剂和表面活性剂。与从常规甲阶可熔酚醛树脂获得的泡沫相比，所获得的泡沫显示出令人满意的密度和压缩性能。通过将液化木基甲阶酚醛树脂和常规甲阶酚醛树脂混合，可获得低密度的泡沫。 （C）2002 John Wiley Sons，Inc. [参考：14]

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