| abstract |
The invention discloses a PVC co-extrusion exterior wall cladding and a preparation method thereof. The PVC co-extrusion exterior wall cladding comprises a PVC foaming layer, wherein the PVC foaming layer comprises the following components in parts by weight: 30-40 parts of PVC resin, 23.5-33.5 parts of modified montmorillonite, 15-23 parts of modified magnesium aluminum hydrotalcite, 30-40 parts of calcium carbonate, 1.4-1.8 parts of composite stabilizer, 1.5-1.9 parts of plasticizer, 1.5-1.9 parts of foaming regulator, 0.3-0.7 part of coupling agent, 0.25-0.45 part of foaming agent, 0.3-0.7 part of stearic acid, 0.2-0.4 part of polyethylene wax and 0.1-0.3 part of paraffin; the composite stabilizer comprises the following components: tribasic lead sulfate, methyl tin mercaptide, phosphite ester, malic acid rare earth and arylamine antioxidant. The PVC co-extrusion exterior wall cladding provided by the invention has the advantages of good thermal stability, capability of adsorbing and degrading automobile exhaust, sound absorption and noise reduction, static resistance and dust adsorption prevention. |