Single-component anti-cracking waterborne polyurethane waterproof coating

The invention belongs to the field of waterborne waterproof coatings, and particularly relates to a single-component anti-cracking waterborne polyurethane waterproof coating. The single-component anti-cracking waterborne polyurethane waterproof coating is prepared from waterborne polyurethane resin, water, pigment, filler, a silane coupling agent, a humectant, a cross-linking agent and other auxiliaries. The single-component anti-cracking waterborne polyurethane waterproof coating has excellent hydrophobic and waterproof performance, stress shrinkage lines and cracks do not exist in the appearance of a paint film, and the paint film has high and low temperature denaturation resistance, relatively strong watertightness and high tensile strength and elongation at break. 本发明属于水性防水涂料领域，具体涉及一种单组分抗开裂水性聚氨酯防水涂料。该单组分抗开裂水性聚氨酯防水涂料的组成包括水性聚氨酯树脂、水、颜料、填料、硅烷偶联剂、保湿剂、交联剂以及其他助剂。本发明的单组分抗开裂水性聚氨酯防水涂料具有优异的疏水和防水性能，漆膜外观不存在应力收缩纹和开裂，且漆膜兼具耐高低温变性、较强的不透水性、高的拉伸强度和断裂伸长率。