Abstract:

In order to improve the fireproof performance of the high-light foam wall materials prepared by the bamboo material liquefaction products, various methods of internal addition and surface immersion were used to carry out a variety of flame retardant modifications, and the effects of different flame retardants and their additions on the foam materials were evaluated. The expenmental effect of flame retardancy. The experimental results show that: adding the selected flame retardant inside or on the surface of the material will not have a significant impact on the morphology or composition of the material itself, and will not cause damage to the mechanical properties of the material. After adding 3 g of expanded gel-silica/ammonium polyphosphate core-shell flame retardant(MCAPP) inside the material, the compressive strength reached 0.37 MPa. The compressive strength after immersing the surface of the material with oxane reaches 0.58 MPa. At the same time, it can improve the flame retardance of the material. The limiting oxygen index increased to 33.2% after adding ammonium polyphosphate(M-APP) inside the material, which was 3% higher than before modification. After immersing the expanded chitosan-montmorillonite-ammonium polyphosphate(CMAp). The flame retardant was soaked on the surface of the material, the ignition time was significantly prolonged, and the limiting oxygen index reached 31.5%.

Key words: bamboo, foaming material, wall material, flame retardant modification