Composite fabric formed by aramid fiber, modacrylic fiber and thermoplastic polyurethane

The utility model relates to a flame-retardant heat insulation fabric, and provides a composite fabric formed by aramid fiber, modacrylic fiber and thermoplastic polyurethane. The fabric is formed by taking the modacrylic fiber as a heat insulation lining of the fabric, the thermoplastic polyurethane as a waterproof breathable interlayer of the fabric and the aramid fiber as a flame-retardant outer layer of the fabric, wherein the heat insulation lining, the waterproof breathable interlayer and the flame-retardant outer layer are in adhering connection through adhesive or in hot-press composite connection. The composite fabric has the characteristics of permanent flame retardance, watertightness, breathability, thermal keeping, reasonable price, excellent breackage resistance and strong tear resistance, and a wider application space in the protective clothing and other fields is provided for the composite fabric.