| abstract |
Porous polymer substrate having a plurality of pores; And an adhesive layer formed on at least one surface of the porous polymer substrate, wherein the adhesive layer includes a heat resistant polymer and an adhesive polymer, and the adhesive polymer is a vinylidene fluoride (VdF) -derived first monomer and hexa; A copolymer of any one second monomer selected from the group consisting of fluoropropylene (HFP), chlorotrifluoroethylene (CTFE), acrylic acid and maleic acid, wherein the second monomer The degree of substitution is 5 to 20% by weight based on the total weight of the copolymer, the weight ratio of the heat-resistant polymer and the adhesive polymer is 95: 5 to 85: 15, the separator for an electrochemical device and the electric Provide a chemical device. The present invention can provide a separator having both thermal stability and adhesion due to the above characteristics. |