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INFLUENCE OF ISOCYANATE ADDITIVE UPON SOME SELECTED PROPERTIES OF PARTICLEBOARDS

机译:异氰酸酯添加剂对刨花板某些选择性能的影响

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The outcome of the present research was to the evaluate the possibility of simultaneous reduction of the density and formaldehyde emission of particleboards without affecting their other important properties, such as the swelling in thickness, the surface absorption, the bending strength, the modulus of elasticity in bending and the internal bond. The envisaged solution involves the production of panels with reduced density and the addition of a isocyanate-based additive into their composition recipe. The effects of two different amounts of additive were tested on panels with three different thicknesses (8mm, 18mm and 28mm). The best found variant (with 0,25% isocyanate-based additive) allowed a decrease by 4,04-7,39% of the density and by 12,08-21,99% of the formaldehyde emission. Additionally, the swelling in thickness decreased by 7,78-22,61% compared to normal density particleboards.
机译:本研究的结果是评估同时降低刨花板密度和甲醛释放量而不影响其其他重要性能(如厚度膨胀,表面吸收,弯曲强度,弹性模量)的可能性。弯曲和内部结合。设想的解决方案包括生产密度降低的面板,并在其组成配方中添加基于异氰酸酯的添加剂。在具有三种不同厚度(8mm,18mm和28mm)的面板上测试了两种不同量的添加剂的效果。最佳发现的变体(含0.25%异氰酸酯基添加剂)使密度降低了4.04-7.39%,甲醛释放量降低了12.08-21.99%。此外,与正常密度刨花板相比,厚度的膨胀减少了7,78-22,61%。

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