麦秸/木材均质复合无机碎料板的阻燃性能研究

摘要

以镁系无机胶粘剂和均匀混合的麦秸和木材碎料为原料,采用热压工艺,制备麦秸/木材均质复合无机碎料板.利用导热系数测定仪、锥形量热仪对比研究了普通有机胶粘剂胶合麦秸板、麦秸无机碎料板、木材无机碎料板以及麦秸/木材均质复合无机碎料板的阻燃抑烟性能.结果表明,与普通有机胶粘剂胶合麦秸板相比,无机胶粘剂能显著降低板材的热释放和烟释放;麦秸/木材均质复合无机碎料板的热释放速率(HRR)、总热释放量(THR)、烟生成速率(SPR)、总烟生成量(TSP)和质量损失均高于麦秸无机碎料板而低于木材无机碎料板,点燃时间(TTI)小于麦秸无机碎料板而大于木材无机碎料板,麦秸/木材均质复合无机碎料板具有良好的阻燃抑烟性能.%With Mg-based inorganic adhesive and uniform mixed particles of wheat straw and wood as materials, inorganic particleboard with a uniform mixture of wheat straw and wood was prepared by hot-pressing technology.Cone calorimeter and thermal conductivity measure instrument were used for the comparative study of flame retardancy and smoke suppression of ordinary wheat straw particleboard, wheat straw inorganic particleboard, wood inorganic particleboard and inorganic particleboard with a uniform mixture of wheat straw and wood.The results show that compared with ordinary wheat straw particleboard, inorganic adhesive can significantly reduce the release of heat and smoke.Heat release rate(HRR), total heat release(THR), smoke production rate(SPR), total smoke production(TSP)and mass loss of inorganic particleboard with a uniform mixture of wheat straw and wood are higher than wheat straw inorganic particleboard but lower than wood inorganic particleboard and time to ignition(TTI)of that is shorter than wheat straw inorganic particleboard but longer than wood inorganic particleboard, indicating that inorganic particleboard with a uniform mixture of wheat straw and wood has a good effect on flame retardancy and smoke suppression.