Study On The Prepatation And Flame Retardancy Of Salix Psammophila /Montmorilonite Composite Material

In this thesis,the Salix Psammophila,MMT and UF is the main research object. Characterized Salix Psammophila /MMT composite material`s the structure by XRD, FT-IR methods. Analysis its thermal performance by using OI, TG methods. Using two schemes preparation Salix Psammophila/MMT Shaving board by adding glue to montmorillonite previously and adding glue to Salix Psammophila. Study on the best of both scenarios preparation. At the same time obtain ideal process conditions through orthogonal experiment , and analyse and discuss two solutions to the preparation process and influence factors. The major achievements of this study were summarized as following:1. Characterize analysed Salix Psammophila /MMT composite material`s structure by XRD, FT-IR means. XRD results show that the composite materials of MMT and Salix Psammophila, the characteristic diffraction peaks decreases, the interlayer spacing increased from 1.47nm to 1.59nm, and UF composite material after the characteristic diffraction peaks decreases, the interlayer spacing increased from 1.47nm to 1.81nm. FT-IR analysis shows that, the Salix Psammophila/MMT composite material`s O-H stretching vibration absorption peak intensity increased than Salix Psammophila at 3421 cm<sup>-1</sup>, 1028cm<sup>-1</sup>. The hydrogen bonding interaction or other chemical combination occurs between MMT and Salix Psammophila. UF/MMT composite material`s characteristic diffraction peaks increased at 3291cm-l, 1086cm^-1 near by. Between the MMT molecules and UF molecules may be connected by oxygen atoms. Therefore, the montmorillonite and Salix Psammophila, UF can form intercalated nanocomposites.2. The Salix Psammophila /MMT composite material`s degradation temperature increased after adding MMT. The degradation temperature of the Salix Psammophila /MMT composite material (260℃) increased 10% than Salix material (240℃). The degradation temperature of the UF/MMT composite material (170℃) increased 13% than UF (150℃). After the addition of MMT, it`s layers can block the removal of water vapor in Salix Psammophila material and UF effectively, which played a good gas barrier effect and can effectively improve its heat-resistant and flame-retardant properties.3. The Salix Sammophila / MMT shaving board which prepared by adding glue after Salix/MMT, the main order is the scattered concentration ,glue content, pressing time, pressing temperature. The Salix Sammophila / MMT Shaving board which produced of Montmorillonite modified with UF as the intermediate mediumand. The main order is glue content, pressing time, pressing temperature, the Scattered concentration. The ideal process conditions: the Scattered concentration of 5%, 12% resin content, pressing temperature was 185℃, pressing time 7min.4. The physical properties of shaving board which prepared UF / MMT composite materials previously and mixed with Salix better than the shaving board that prepared Salix Sammophila / MMT composite materials previously and then mixed with glue. The physical properties of shaving board which using the first method can satisfy the requirement for structural panels used as a structural plate in dry conditions regulated by GB / T 4897.4-2003. The physical properties of shaving board which using the second method can satisfy the requirement for a panel of furniture and interior decoration requirements in dry conditions regulated by GB / T 4897.3-2003.