Polyurethane resin material A and application thereof

The invention provides a polyurethane resin material A and application thereof. The polyurethane resin material A comprises polyester polyol, an amine chain extender and a tertiary amine catalyst, the polyurethane resin material A is prepared from the following components in percentage by mass: 2 to 8 percent of amine chain extender and 0.5 to 1.5 percent of tertiary amine catalyst. According to the polyurethane resin material A provided by the invention, the specific amine chain extender and the tertiary amine catalyst are compounded, so that the polyurethane resin material A still has relatively high reaction activity after being stored for a long time in the presence of the catalyst, the polyurethane resin product is excellent in performance, the production efficiency is improved, and the polyurethane resin material A is particularly suitable for production of transparent materials. 本发明提供了一种聚氨酯树脂A料及其应用，所述聚氨酯树脂A料包括聚酯多元醇、胺类扩链剂和叔胺类催化剂；以质量百分含量计所述聚氨酯树脂A料包括胺类扩链剂2～8％，叔胺类催化剂0.5～1.5％。本发明提供的聚氨酯树脂A料通过特定种类的胺类扩链剂与叔胺类催化