模拟冬夏季节环境，考察了不同催化剂对聚醚型聚氨酯软质泡沫通气性、硬度和压缩变形的影响。
Environment in summer and winter were simulated. Roles of catalysts on the aeration, hardness and deformation of polyether type PU soft foam were studied.
考虑到着色和浇铸料的性质，选择具有更大硬度范围，低磨损，优越承载能力的聚氨酯替代橡胶是明智的。
Considering its colourable and castable nature, its extended hardness range, low wear and superior load bearing capacity, polyurethane is a smart substitute for rubber.
分别采用MDI - 50、TDI - 65和TDI - 80与聚酯多元醇反应制得低硬度耐溶剂聚氨酯弹性体制品。
Polyurethane elastomers with low hardness and solvent resistance were prepared by reacting MDI-50, TDI-65 and TDI - 80 with polyester polyol respectively.
应用推荐