Microporous polyolefin (PO) foamed material

A microporous polyolefin (PO) foamed material, prepared from a PO composition through a foaming process, wherein the PO composition comprises a PO and an additive composition;

• based on 100 parts by mass of the PO composition, the additive composition accounts for 3 to 20 parts by mass, and the additive composition comprises a functional additive;
• the functional additive has a molecular formula of R—(OCH2CH2)xOH, wherein R is an aralkyl group, a straight alkyl chain, or a branched alkyl chain, the aralkyl group, the straight alkyl chain, or the branched alkyl chain has 5 to 60 carbon atoms, and x is 1 to 20;
• and an absolute value of a solubility parameter difference between the PO and the functional additive is greater than or equal to 1 (J/cm3)1/2 and less than or equal to 5 (J/cm3)1/2,
• wherein the PO composition further comprises a second additive, the second additive comprising of lauric acid diethanolamide.