ABSTRACT

The potential of addition of calcium lignosulfonate as an eco-friendly additive with a phenol-formaldehyde (PF) resin, at different ratios, to produce medium-density fibreboards (MDF) with acceptable properties, was investigated in this work. The fibreboards were fabricated in the laboratory with low PF resin percentage (3%, 4%, 5%), while the addition levels of calcium lignosulfonate varied from 5% to 15% (on the dry fibres). The physical and mechanical properties of the fibreboards were evaluated, and further statistically analysed in order to determine the optimal values of PF resin content and lignosulfonate addition for fulfilling the European standards. It was shown that at the low PF resin content (3%), addition of lignosulfonate should not exceed 10% to avoid deterioration in the mechanical properties. It was concluded that PF resin content of 3.5% can be recommended for the production of lignosulfonate-PF bonded MDF panels to comply with the EN standard requirements.

摘要

在这项工作中，研究了木质素磺酸钙与酚醛（PF）树脂以不同比例添加作为环保添加剂的可能性，以生产出具有可接受性能的中密度纤维板（MDF）。纤维板是在实验室中以低PF树脂百分比（3％，4％，5％）制造的，而木质素磺酸钙的添加量则为5％至15％（在干燥纤维上）。对纤维板的物理和机械性能进行了评估，并进一步进行了统计分析，以确定满足欧洲标准的PF树脂含量和木质素磺酸盐添加量的最佳值。结果表明，在低PF树脂含量（3％）下，木质素磺酸盐的添加量不应超过10％，以避免机械性能下降。