| Study on Amphipathic Polyurethane Elastomer Ⅰ.Preparation of Block APU and Its Mechanical Properties |
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| DOI： |
| Key Words: polyurethane elastomer；amphipathic polymer；block copolymer；mechanical properties |
| Author Name | Affiliation | | Pang Yongxin | South China University of Technology | | Wu Yan | South China University of Technology | | Pan Hui | South China University of Technology | | Jia Demin | South China University of Technology |
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| Abstract: |
| An amphipathic block polyurethane elastomer(APU) was prepared with the solution polymerization using polyethyl adipate as hydrophobic component and polyglycol as hydrophibic component.The influence of the hydrophibic and hydrophobic components ratio，the soft and hard segments ratio and the polymerization conditions on the mechanical properties of block APU was investigated.The results showed that the increase of the hydrophibic component weight fraction and molecular weight would result in the lower mechanical properties of APU；the optimum overall properties of block
APU were obtained if the prepolymers ratio [NCO]/[OH] was 3.3 and their cured total functional groups ratio [NCO]/([OH]+[NH2]) was 1.5. |
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