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|1. (WO2018161855) POLYPROPYLENE COMPOSITION HAVING LOW SURFACE TEMPERATURE, PREPARATION METHOD THEREFOR AND USES THEREOF|
|Applicants:||KINGFA SCI. & TECH. CO., LTD.
SHANGHAI KINGFA SCI & TECH CO
|Title:||POLYPROPYLENE COMPOSITION HAVING LOW SURFACE TEMPERATURE, PREPARATION METHOD THEREFOR AND USES THEREOF|
Disclosed in the present invention are a polypropylene composition having low surface temperature, a preparation method therefor, and uses thereof. The polypropylene composition having low surface temperature comprises components of: 47-85 parts of polypropylene resin and 5-20 parts of elastomer; and the polypropylene composition having low surface temperature comprises 1000 ppm-4000 ppm of a pigment which is selected from one of or a mixture of rutile-type pigments, spinel-type pigments, or hematite-type pigments. The preparation method for the polypropylene composition comprise: uniformly mixing the polypropylene resin, the pigment, and the elastomer; feeding into a twin-screw extruder to be melted and mixed; and then performing extruding and granulating to obtain the polypropylene composition having low surface temperature of the present invention. The polypropylene composition having low surface temperature of the present invention has a higher near-infrared reflectivity; and after the polypropylene composition and other polypropylene compositions on the market are irradiated with near-infrared rays of the same frequency for a certain period of time, the surface temperature of the propylene composition of the present invention is found to be significantly lower. The polypropylene composition of the present invention can be widely used in dashboards, sub-dashboards, door panels, seats, or bumpers.