Flexible toothbrush handle polypropylene material and preparation method thereof

The invention discloses a flexible toothbrush handle polypropylene material and a preparation method thereof. The flexible toothbrush handle polypropylene material is prepared from, by weight, 50-90%of a polypropylene random copolymer, 8-48% of calcium carbonate and 2% of color masterbatch, wherein calcium carbonate refers to light calcium carbonate in diameter of 200-2000mesh. The flexible toothbrush handle polypropylene material has the advantage that by adoption of the flexible polypropylene random copolymer as a main material and adding of calcium carbonate, rigidity is improved on the basis that the flexibility requirement is met, the product rigidity index is increased by 20% or more, and excellent rigidity-flexibility balance is achieved. The flexible toothbrush handle polypropylene material is suitable for manufacturing of flexible toothbrush handle products and is simple in manufacturing process. 本发明公开了种柔性牙刷柄聚丙烯材料及其制备方法。所述牙刷柄聚丙烯材料的组份及重量百分比为：无规共聚聚丙烯50～90％，碳酸钙8～48％，色母粒2％。所述的碳酸钙是轻质碳酸钙，直径尺寸在200～2000目。根据本