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用扫描电子显微镜对未浸水和浸水后的干法无胶硬质纤维板进行观察，以获得有关无胶纤维板内在结构的变化，这可以更好地了解无胶纤维板的强度和耐水性能，在制造纤维板过程中，通过热磨使木材纤维在胞间层分离，并在热压时受压力作用再次结合，纤维重新结合的状况决定了纤维板的物理力学性能，经电镜观察的无胶纤维板，纤维间相互交织且结合紧密，即使是浸水后，纤维间的结合仍未出现松散现象，这表明不施加胶粘剂制造的干法硬质纤维板可以具有优越的强度和耐水性能。
A scanning electron microscope was used to observe the un-wetted and water-immersed, dry, non-grafted hardboard to gain insight as to the inherent structure of the non-gelled fibreboard, which gives a better understanding of the strength and water resistance of the non-gelled fiberboard, In the process, the wood fibers are separated by the hot mill in the intercellular layer and recombined by the pressure during hot pressing. The state of fiber reunion determines the physical and mechanical properties of the fiberboard. The fiberboard is observed by electron microscopy. The intertwined and bonded, even after water immersion, the bond between the fibers did not appear to loose, indicating that dry hardboard boards made without adhesive could have superior strength and water resistance.