水性聚氨酯复合材料制备及性能研究

Study on preparation and properties of waterborne polyurethane composites

水性聚氨酯由于在复合材料的制备和性能方面具有优越性,同时达到环保要求。但该材料也存在很多缺陷,诸如耐水性能低、对紫外强光吸收能力弱等。为改善其稳定性及吸收紫外线光的性能,在水性聚氨酯复合材料的制备过程中,添加纳米材料表面性能提升剂。研究结果显示,水性聚氨酯复合材料性能改善后,其热稳定性和紫外吸收性能显著提高,同时使用控制单因素变量法,探索改性纳米TiO2材料的性能提升条件,得到最佳的改性剂用量,研究结果为复合材料制备和性能改进提供科学依据。

Water-based polyurethane has advantages in terms of preparation and performance of composite materials,while meeting environmental requirements.However,this material also has many defects,such as low water resistance and weak absorption of ultraviolet light.In order to improve its stability and the performance of absorbing ultraviolet light,in the preparation process of waterborne polyurethane composite materials,nano-material surface performance enhancer was added.The research results show that after the performance of the waterborne polyurethane composite material is improved,its thermal stability and ultraviolet absorption performance are significantly improved.At the same time,the controlled single factor variable method is used to explore the performance improvement conditions of the modified nano-titania material to obtain the best modifier dosage.The research results provide a scientific basis for composite material preparation and performance improvement.