FOAMING-PROMOTING LIQUID POTASSIUM/ZINC COMPOSITE HEAT STABILIZER FOR PVC WALLPAPER, AND PREPARATION METHOD THEREFOR

摘要

The present invention relates to a foaming-promoting liquid potassium/zinc composite heat stabilizer for PVC wallpaper, and a preparation method therefor. The foaming-promoting liquid potassium/zinc composite heat stabilizer for PVC wallpaper is prepared by using the following components in weight percentage: 12.8% to 43.3% of isocaprylic acid, 14.4% to 21.8% of oleic acid, 4.8% to 10.2% of benzoic acid, 5.6% to 8.7% of potassium hydroxide, 10.8% to 14.9% of zinc oxide, 11.6% to 44.5% of solvent naphtha and 4.9% to 10.1% of phosphite. The preparation steps are: (1) mixing isocaprylic acid, oleic acid and solvent naphtha, then adding benzoic acid at a temperature of 65ºC, adding and dissolving potassium hydroxide and then adding and dissolving zinc oxide; (2) heating to 110ºC to 120ºC and stirring for 90 minutes so as to allow a reaction to be complete until a solution is clear and transparent and has no granule; and (3) carrying out cooling to 80ºC to 90ºC, adding phosphite and carrying out thermal insulation for 30 minutes. The composite heat stabilizer of the present invention is environmentally friendly, has no toxicity, good dual functions of heat stability and foaming promotion, and has high foaming promoting efficiency, high cost performance and wide market prospects.