The invention discloses a
polyvinyl chloride (PVC) / ASA
alloy, which is prepared by
polyvinyl chloride resin, ASA resin and right amount of
processing aids. The preparation method includes: mixing uniformly the
polyvinyl chloride resin and
processing material at 60-120 DEG C, adding ASA resin powders, mixing evenly, dropping the temperature to 43 DEG C, to obtain the mixture; extruding the mixture through a screw extruder to obtain the
alloy, wherein, the temperature of the extruder head is 165 DEG C - 185 DEG C, and the revolution speed is 120-160 r / min. Compared with the existing technology, the PVC / ASA
alloy prepared by the invention has high
impact resistance,
weather resistance, fire-retardant, superior synthesized dynamic performance, good
processing performance, stable preparation process, non three wastes
pollution. The alloy can be formulated into various colors according to requirements, can be produced by screw rod extruding
continuous manufacturing method, and can also be produced by
extrusion molding and injection molding according to manufacturing requirements of products.