Abstract
A new water-borne nontoxic emulsion of low cost was prepared by using wasted polystyrene foam as elementary component, butyl acrylate (BA), styrene (St) and vinyl acetate (VAc) as modifiers and solvents. Influences of monomers, compounded emulsifier on properties of emulsion were discussed. The optimum process conditions were as follows: m (PSF) : m (monomers) = 1 : 2 , m (sodium dodecyl sulphate) : m (OP-10) = 2 : 1 , m (VAc) : m (St) : m (BA) = 1 : 1 : 2 , and mass fraction of emulsifiers was 3.0 wt% accounting for the total mass of monomers. The synthetic latex with high adhesion strength, pollution-free, low cost and storage stability is applicable to prepare blast furnace slag unburnt bricks, respectively. The properties of the brick sample are better than that of MU 25 of GB 11945-89.
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