麦秸碎料板贴面性能研究

Overlaying Performance of Wheat Straw Flake Boards

探索麦秸碎料板的贴面性能,为麦秸碎料板替代木材和木质人造板作为家具和室内外装饰材料提供理论依据,扩大麦秸碎料板的使用范围。采用4种贴面材料(0.27 mm厚度薄木、0.60mm厚度薄木、印刷装饰纸、三聚氰胺浸渍纸)和4种胶粘剂(异氰酸酯胶、脲醛树脂胶、白乳胶、脲醛胶与白乳胶混合胶)对麦秸碎料板进行贴面处理,通过测试贴面层的透胶率、耐水性能及表面胶合强度分析其贴面性能的优劣。结果表明,异氰酸酯胶贴的板件其耐水性能和表面胶合强度最好,用白乳胶贴面的胶层耐水性最差;薄木和三聚氰胺浸渍纸的贴面效果较好,印刷装饰纸的贴面性能好但其贴面效果较差;麦秸碎料板贴面前经过砂光处理能有效地改善贴面性能。用4种胶粘剂在经过砂光处理的麦秸板表面采用传统的贴面工艺贴4种饰面材料,贴面层的耐水性和胶合强度均能达到标准要求,其中印刷装饰纸贴面后板面光洁度较差。

In order to provide theoretical basis for the substitution of wheatstraw particle board （WPB）for wood and wood-based panel to be used for furniture and indoor and outdoor decorative materials, and to extend the use of WPB, the overlaying performance of wheat straw particle board were examined. Four kinds of overlaying materials （0.27 mm and 0.50 mm thick veneer,decor paper,and paper impregnated melamine resin）and four kinds of adhesives （MDI,UF,white latex,mixed resins of UF and white latex） were used to carry out the overlaying process on WPB. The overlaying performance was analyzed by testing the water resistance property and surface bonding strength. The water resistance property and surface bonding strength of overlaying WPB glued by MDI were better than those glued by any other adhesives. The WPB board glued by white latex was poor in water resistance property. Overlaying effect of WPB using veneer and paper impregnated melamine resin was generally better. Overlaying performance of WPB using decor paper was good but its overlaying effect was poor. The sanding process of WPB could effectively improve its overlaying performance. Water resistance and bonding strength of the cover layer could meet the stand- ard requirements with four kinds of overlaying materials and four types of adhesives, while the decor paper cover effect was poorer.