Novel fireproof door core board

The utility model provides a novel fireproof door core board, belongs to and prevents fire door technical field. The utility model provides a bulk strength, anti twisting strength and antidetonation, the novel fireproof door core board that anti -collision performance is high. The utility model discloses a door core main part, pre -buried in door core main part have a structural steel skeleton, its characteristics are door core main part comprises three -layer fire prevention filling layer, and the intermediate level of three -layer fire prevention filling layer is the low -density filling layer, and its both sides are the high density filling layer respectively, low -density filling layer adoption unit weight is 240~300kgm3's pearlite PLASTIC LAMINATED, and the high density filling layer adopts unit weight to be 450~600kgm3's pearlite PLASTIC LAMINATED. 种新型防火门芯板，属于防火门技术领域。本实用新型提供种整体强度、抗扭曲强度以及抗震、抗撞击强度高的新型防火门芯板。本实用新型包括门芯板主体，在门芯板主体内预埋有结构钢骨架；其特点是所述门芯板主体由三层防火填充层组成，三层防火填充层的中间层为低密度填充层，其两侧分别为高密度填充层；所述低密度填充层采用容重为240～