为了实现新型非充气式轮胎的绿色制造,制备了一种新型、具有软硬段结构的聚氨酯丙烯酸酯树脂,借助3D打印技术实现了蜂窝状聚氨酯丙烯酸酯轮胎的制造并分析了其基本力学性能。结果表明,利用不同多元醇为扩链剂和甲基丙烯酸羟乙酯为封端剂制备的聚氨酯丙烯酸酯树脂分子质量和性能可控,其中以丙三醇为扩链剂制备的聚氨酯丙烯酸酯树脂性能最佳。随着多元醇官能度的升高硬段结构增多,其拉伸强度从7.23 MPa增强至36.19 MPa,断裂伸长率从448%降至39.42%。此外,3D打印的聚氨酯丙烯酸酯蜂窝状轮胎比传统轮胎减重44.7%,且具有良好的亲水性。

To manufacture novel non-pneumatic tires in a green way,a novel polyurethane acrylate resin with soft and hard segments is prepared.Honeycomb-like polyurethane acrylate-based tires are prepared by means of 3D printing technology,and their basic mechanical properties are analyzed.It is shown that the molecular weight and performance of polyurethane acrylate resin are controllable as the resin is prepared by using different polyols as chain extender and hydroxyl ethyl methacrylate as end sealing agents.Among them,polyurethane acrylate resin prepared with propanetriol as chain extender shows the best performance.With the higher functionality of polyols,the resin has more hard segment structures,its tensile strength increases from 7.23 MPa to 36.19 MPa,and its break elongation decreases from 448% to 39.42%.In addition,3D printed polyurethane acrylate resin-based honeycomb-like tires lose 44.7% weight than conventional tires,and have good hydrophilicity.

程丽琴(1996-),女,硕士研究生,研究方向为树脂3D打印,c182122@163.com。