为了提高船舶运输能效,减少船舶自重,研制了一种轻量化、无溶剂的环保型聚氨酯弹性体材料,该材料以TDI基聚氨酯预聚物和聚醚多元醇、轻木粉等为原料制备,还可用于对涂层有低面密度要求的飞机、舰船内舱地坪。采用硬度仪、万能拉伸试验机等对聚氨酯弹性体进行显微硬度、结合强度等表征;研究了轻木粉、聚醚多元醇分别对聚氨酯弹性体性能和涂层面密度的影响。结果表明,当轻木粉的添加量为25%、扩链剂添加量为12%时聚氨酯弹性体的综合性能最好。

In order to improve the energy efficiency of ship transportation and reduce the weight of ships.In this work,a lightweight,solvent-free,environmentally friendly polyurethane elastomer coating was developed.It was prepared from TDI-based polyurethane prepolymers,polyether polyols,and balsa wood powder.It can be used for interior floors of aircraft and ships that have low areal density requirements for the coating.The microhardness and bonding strength of the polyurethane elastomer were studied by the hardness tester and the tensile measurement.The effects of balsa wood powder and polyether polyol on the properties of the polyurethane elastomer and the surface density of the coating were studied,respectively.The results show that the addition amount of balsa wood powder is 25%and the addition amount of chain extender is 12%,the comprehensive performance of polyurethane elastomer is the best.