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Polyurethane silicone montmorillonite nanocomposites
    A water-based polyurethane/montmorillonite composites silicone preparation method is to pre-polymer, by adding pre-intercalation of montmorillonite, the catalyst in the presence of the prepolymer, and, the second expansion of emulsion and water chain obtained, as described in the pre-intercalated organic montmorillonite is the quality of silicone 1 and 2 MMT to 100 copies of the polymer polyol A at 80 ~ 130 under stirring dispersion 3 ~ 8h, and then high-speed shearing machine shearing 0.5 ~ 2h obtained, as described in the following way silicone montmorillonite obtained: the clay dissolved in distilled water, add the type (I) and 50 as shown in silicone quaternary ammonium salt % ethanol mixed solution prepared at 20 ~ 90 under stirring 1 ~ 100h, after the organic silicon montmorillonite after treatment. The present invention low cost, simple process, easy operation and environmental protection. Obtained by the stability of composite materials, has broad application prospects.
Added2011-01-05 11:38:43       Clicks2412      Source