【摘要】 通过对低聚物多元醇和扩链剂的选择 ,采用一步法研制出邵D硬度大于 70、缺口冲击强度大于 6kJ/m2 的高硬度聚氨酯弹性体。该体系的凝胶时间大于 10min ,既适合手工浇注又适合机器浇注更多还原

【Abstract】 By choosing of oligomer polyols and chain extenders, polyurethane elastomer with hardness higher than Shore D70 and gap impact strength higher than 6kJ/m 2 was synthesized by one step method.The gel time of this reaction system is more than 10 minutes.The elastomer can be manufactured both by mechanical process and manual cast.更多还原