High-strength low-density poly(4-methyl-1-pentene) foam and preparing method thereof

The invention relates to a high-strength low-density poly(4-methyl-1-pentene) foam and belongs to the field of polymer materials. The high-strength low-density poly(4-methyl-1-pentene) foam is prepared from, by mass, 50-99.8% of poly(4-methyl-1-pentene) and 0.2-50% of an enhancer, wherein the enhancer is composed of at least one of a polymer enhancer and an inorganic enhancer. By adding the enhancer into traditional low-density poly(4-methyl-1-pentene) foam, the framework strength of the low-density poly(4-methyl-1-pentene) foam is remarkably improved, and then the processability of the foam and the mechanical property of the foam are improved. The invention further provides a preparing method of the high-strength low-density poly(4-methyl-1-pentene) foam. The preparing method is easy to implement and stable in technology, too complicate equipment is not needed, the high-strength low-density poly(4-methyl-1-pentene) foam can be efficiently obtained with a few of simple steps, and the obtained foam product is