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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Synthesis and Characterization of a New UV Cross-linkable Waterborne Siloxane-polyurethane Dispersion
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Synthesis and Characterization of a New UV Cross-linkable Waterborne Siloxane-polyurethane Dispersion

机译：新型紫外线可交联的水性硅氧烷和聚氨酯分散体的合成与表征

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摘要

A new cross-linkable waterborne siloxane-polyurethane dispersion (PEDA-SiPU) was synthesized by incorporating the acrylate groups into the side chain of the polyurethane using the pentaerythritol diacrylate(PEDA) and introducing polysiloxane groups into the soft segment of the polyurethane using dihydroxybutyl-terminated polydimethylsiloxane (PDMS). They can form the cross-linking structure by UV radiation in the presence of a photo-initiator. Fourier transform infrared spectroscopy (FTIR) was used to identify the chain structure of PEDA-SiPU. The effect of the PDMS content and the PEDA content on the C=C conversion behaviors under UV irradiation was investigated. Water resistance and the mechanical properties of the UV cured films were also studied. Through the controlling of suitable content of PDMS and PEDA introduced in the chain, the obtained PEDA-SiPU films were proved to possess both good water resistance and mechanical properties.
机译：通过使用季戊四醇二丙烯酸酯（PEDA）将丙烯酸酯基团掺入聚氨酯的侧链，并使用二羟基丁基-二甲氧基将聚硅氧烷基团引入聚氨酯的软链段，从而合成了一种新型的可交联的水性硅氧烷-聚氨酯分散体（PEDA-SiPU）。封端的聚二甲基硅氧烷（PDMS）。它们可以在光引发剂的存在下通过紫外线辐射形成交联结构。傅里叶变换红外光谱（FTIR）用于鉴定PEDA-SiPU的链结构。研究了PDMS含量和PEDA含量对UV辐射下C = C转化行为的影响。还研究了紫外线固化膜的耐水性和机械性能。通过控制链中引入的PDMS和PEDA的合适含量，证明所获得的PEDA-SiPU膜具有良好的耐水性和机械性能。

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