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The orthogonal experiment design methods were used to select the optimal conditions of preparation for modified feldspar via conventional wet method with silane coupling agent KH570. The optimum scheme was followed by: reaction time 1.5 h, modifier content 8 wt%, pulp density 12 wt%, reaction temperature 70 °C, respectively. Furthermore, polyvinyl alcohol (PVA)/modified feldspar composites were prepared...
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