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水基多异氰酸酯交联剂的制备与应用

China Leather(2015)

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Abstract
用自制羟基磺酸盐对HDI三聚体进行亲水改性,制备了一种水基型多异氰酸酯交联剂并研究其应用性能.结果发现:样品水溶液中,异氰酸根(NCO)含量随着样品理论NCO含量的增大而快速降低;该交联剂(NCO理论含量20.5%)对聚氨酯鞋胶的粘接性能以及胶膜的耐热性、耐水性和抗拉强度,均有显著地提高;加入交联剂不影响聚氨酯胶黏剂(WPUA)软段的结晶性,但结晶熔融温度有一定的下降.
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