Mechanical and Underwater Acoustic Properties of the Polyurethane Elastomers with Different Hard Segment Contents

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Li, Xiaohui^1 ; Xing, Suli^1 ; Yang, Jinshui^1 ; Yin, Changping^1 ; Ju, Su^1

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, China^1

关键词: Hard segments;    One-step methods;    Polypropylene glycol;    Polyurethane elastomers;    Soft segments;    Toluene diisocyanates;    Triethanolamines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022060/pdf
DOI  :  10.1088/1757-899X/490/2/022060

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Polyurethane elastomers with different hard segment contents were synthesized by one-step method, using polypropylene glycol (PPG) as soft segment, toluene diisocyanate (TDI) and triethanolamine (TEA) as hard segments. The effects of hard segment content on the molecular structure, mechanical properties and underwater acoustic properties of polyurethane elastomers were studied. The results showed that hard segment contents have a great impact on mechanical and underwater acoustic properties of the PUs obtained, the tensile strength, hardness and compressive strength increased with the growth of the hardness segment contents, and sample with 20 wt% has the best underwater acoustic properties, whose α can reach at 0.7.