以硅丙乳液为改性剂,通过扫描电镜(SEM)、X射线衍射仪(XRD)等手段分析了添加量对镁系无机胶黏剂复合板材力学强度、耐水性能、阻燃性能和镁系无机胶黏剂凝固时间的影响原因。结果表明:硅丙乳液与镁系无机胶黏剂可以形成有机无机的互穿网络结构;随着添加量增大,硅丙乳液的成膜性增强,使镁系无机胶黏剂的黏结性能及材料的整体性增加,复合板材力学性能增强,耐水性能提高;添加量增加的同时也会延缓镁系无机胶黏剂的凝固时间,但不会对镁系无机胶黏剂的晶相组成产生影响;此外,镁系无机胶黏剂还赋予秸秆板较好的阻燃抑烟特性,硅丙乳液的添加对复合板材的阻燃性能没有明显影响。 The mechanical strength, water resistance, flame retardancy and flame retardancy of Mg-based inorganic adhesive composite sheets were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) Effect of inorganic adhesive setting time. The results show that the silicone-acrylate emulsion and the inorganic filler can form an organic-inorganic interpenetrating network structure. With the increase of the addition amount, the film-forming property of the silicone-acrylate emulsion increases and the adhesion properties of the magnesium- The integrality of the material increases, the mechanical properties of the composite sheet are enhanced, and the water resistance is improved. The increase of the addition amount also delays the setting time of the magnesium-based inorganic adhesive but does not affect the crystal phase composition of the magnesium-based inorganic adhesive ; In addition, the magnesium-based inorganic adhesive also gives better flame retardant characteristics of straw board, the addition of silicone-acrylic emulsion has no significant effect on the flame retardant properties of the composite board.