Cordierite（{{0}}} 。5、0。5-0 2、<0.088 mm) and mullite clinker (M60, 1-0.5 mm) as the main raw materials, a mixed powder consisting of 25% (w) lightly burned MgO powder, α - Al2O3 micro powder, and additives (purple wood nodes and KOH) was added. The mixture was proportioned, mixed, and formed according to the mass ratio of cordierite to mullite of 40:35, 42.5:32.5, and 45:30, respectively. The specimens were then fired at 1300, 1350, and 1400 ℃ for 3 hours to synthesize cordierite mullite shed board samples. The physical properties of the samples at room temperature and high temperature were tested, and XRD SEM and EDS analysis. The results showed that the greenhouse board material synthesized at 1350 ℃ for 3 hours with a ratio of 45:30 between m (lapis lazuli) and m (mullite) had the best performance indicators. The main crystal phases were lapis lazuli and mullite, and the microstructure was uniform. A large number of in-situ lapis lazuli and mullite grains were generated between the crystals. The "connecting bridges" between the aggregates were well developed, and the material had high flexural strength
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