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OALib Journal期刊
ISSN: 2333-9721
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高固含量水性聚氨酯的合成及其主要影响因素
Keywords: 水性聚氨酯,高固含量,分散体,涂料
Abstract:
？以异佛尔酮二异氰酸酯（ipdi）和六亚甲基二异氰酸酯（hdi）为硬段，聚醚二元醇（n-220）及聚酯二元醇（pba）为软段，二羟甲基丙酸（dmpa）为亲水性物质，乙二胺（eda）为后扩链剂等，合成了固含量约为50%的环氧树脂（e-20）及甲基丙烯酸甲酯（mma）复合改性的水性聚氨酯分散体（pud）。并探讨了—nco／—oh物质的量比、软段类型和软段相对分子质量对高固含量水性聚氨酯性能的影响，同时对制得的pud进行红外、透射电镜等测试分析，从而制备出性能较好、较稳定的高固含量水性聚氨酯分散体。
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