Waterproof and breathable polyurethane material and preparation method thereof

• Main Authors: ZHONG FAWANG, JIANG RUIHAO
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses a waterproof and breathable polyurethane material and a preparation method thereof, and relates to the technical field of polyurethane materials. The waterproof and breathable polyurethane material comprises a bottom material layer, a middle material layer and a surface material layer, the thickness ratio of the bottom material layer to the middle material layer to the surface material layer is (5-10): (6-10): (4-8); the backing material layer is selected from one of regenerated cellulose fibers and synthetic fibers; the middle material layer is prepared from the following components in parts by mass: 100 parts of waterborne polyurethane resin, 0.01 to 0.5 part of a wetting flatting agent, 1 to 5 parts of a foam finishing agent and 0.01 to 0.5 part of an isocyanate curing agent; the surface material layer is prepared from the following components in parts by mass: 100 parts of waterborne polyurethane resin, 0.01 to 0.2 part of a scratch-resistant agent, 0.01 to 0.5 part of a wetting fl