镁系无机刨花板热压工艺与阻燃性能研究

Study on hot pressing process and flame retardancy of magnesium inorganic particleboard

为研究镁系无机刨花板在生产过程中实验参数对板材性能的影响与各种参数对板材阻燃性能的影响,采用单因素实验法研究不同密度对板材物理力学性能及燃烧性能的影响,设置正交试验研究水性胶浓度、增强剂用量、无机胶施胶量、板坯含水率四因素对板材性能的影响,并设置仅采用MDI胶制成的板材作为对照组,分析对比不同无机刨花板的热总释放量、热释放速率、烟总释放量、产烟速率等性能,得到结论为:当板材密度为0.95 g/cm^(3)、水性胶浓度为7.5%、增强剂用量为2.5%、无机胶施胶量为50%、铺装含水率为23%时,板材各项性能最优,满足《难燃刨花板》中难燃P2型刨花板的要求。

In order to study the influence of experimental parameters on the properties of magnesium based inorganic particleboard in the production process and the influence of various parameters on the flame retardant properties of the board, the single factor experiment method was used to study the influence of different densities on the physical and mechanical properties and combustion properties of the board. And the orthogonal experimental study was set on the 4 factors of concentration of acrylic glue, enhance agent, inorganic adhesive glue content,moisture content of the slab which affect the performance of the plate, and the only sheet made of MDI adhesive was set as control group, the contrast analysis of different inorganic particle boards’ heat total release, heat release rate, smoke production,smoke production rate, was conducted. When the density of board is 0.95 g/cm^(3), the concentration of water-based adhesive is 7.5%, the dosage of reinforcing agent is 2.5%, the amount of inorganic adhesive is 50%, and the water content of paving is23%, the performance of board is the best, with all performances meet the requirements of non-combustible P2 particleboard in the national standard GB/T 39032-2020, Non-combustible Particleboard.