Phenol-formaldehyde-resin treatment of Scots pine sapwood for the reduction of resin exudation through coatings
نویسندگان
چکیده
Brown discolouration caused by resin exudation from knots is a problem for range of light-coloured painted pines, and will negatively affect the appearance finish. To solve this problem, hot-and-cold bath impregnation process wood prior to painting was tested. Sawn timber, 18 × 120 mm in cross-section dimension, were heated an oven then immediately immersed cold liquid containing phenol-formaldehyde-based solution, filling 1–5 thick layer beneath surface with phenol-formaldehyde. After curing, timbers white coloured coating system intended exterior use, tested artificial weathering test (QUV). The phenol-formaldehyde treatment greatly reduced compared non-impregnated wood.
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ژورنال
عنوان ژورنال: Wood Material Science and Engineering
سال: 2022
ISSN: ['1748-0280', '1748-0272']
DOI: https://doi.org/10.1080/17480272.2021.2017479