Forestry Engineering Journal Forestry Engineering Journal Лесотехнический журнал 2222-7962 14558 10.12737/23456 ДЕРЕВОПЕРЕРАБОТКА. ХИМИЧЕСКИЕ ТЕХНОЛОГИИ WOOD PROCESSING. CHEMICAL TECHNOLOGY ДЕРЕВОПЕРЕРАБОТКА. ХИМИЧЕСКИЕ ТЕХНОЛОГИИ Cellulose sludge and wood bark as formaldehyde scavengers for plywood bonded with urea formaldehyde resin Введение шлама целлюлозы и отходов древесной коры для снижения эмиссии формальдегида из фанеры на основе карбамидоформальдегидной смолы Смидракова Мария Smidrakova Mariya smidriakova@tuzvo.sk Седлячик Ян Sedlyachek Yan isc-sec@i12.com Технический университет Зволена Technical University in Zvolen 12 12 2016 12 12 2016 6 4 187 193 https://naukaru.ru/en/nauka/article/14558/view

Целью исследования является модифицирование карбамидоформальдегидной (КФ) смолы цел-люлозным шламом и древесной корой с целью снижения выделения формальдегида. Порошок дре-весной коры представляет собой смесь, содержащую 50 % буковой коры и 50 % еловой коры. Эмис-сию формальдегида и прочность на сдвиг клеевых соединений тестировали на пяти образцах трех-слойной фанеры ольхи. Эмиссию формальдегида определяли эксикаторным методом в течении 24-часов и контролировали семь недель после склеивания. Через 7 недель выделение формальдегида из КФ клея, модифицированного порошком древесной коры, снизился на 39 %.

The aim of the research was to modify urea-formaldehyde resin (UF) by cellulose sludge and wood bark in order to reduce formaldehyde emission. Wood bark powder was a mixture containing 50 % of beech bark and 50 % of spruce bark. Release of formaldehyde and shear strength of the adhesive joints was tested on five resp. three-layer alder plywood. Formaldehyde emission was determined by 24-hour desiccator method and monitored during seven weeks after gluing. After 7 weeks of the experiment the reference UF adhesive showed formaldehyde emission decreased by 39 %.

 эмиссия формальдегида гигиенические свойства КФ клей мебель фанера formaldehyde emission hygienic properties UF adhesive furniture plywood

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