Scientists have investigated urethane acrylates with different functionalities under electron-beam and ultraviolet irradiation.

科学家们研究了在电子束和UV照射下,具有不同官能度的聚氨酯丙烯酸酯的表现。 

The curing degree of electron beam cured samples was higher than that of UV-cured samples under equivalent energy.  

在等效能量下，在测试品固化程度方面,经电子束(EB)固化程度高于经UV固化。 

In the new study, four model urethane acrylates with different functionalities were synthesised and their structures were characterised using infrared spectroscopy, nuclear magnetic resonance spectroscopy, and gel permeation chromatography.

在此次研究中，科学家们合成了四种具有不同官能度的典型聚氨酯丙烯酸酯，并使用红外光谱法、核磁共振光谱法和凝胶渗透色谱法对其结构进行了表征。 

Pure urethane acrylates were then irradiated with energy-equivalent electron-beam (EB) and ultraviolet (UV), and the acrylate structure and curing degree after irradiation were studied. The results of double bond conversion and gel content revealed that the curing degree of EB-cured samples was higher than that of UV-cured samples under equivalent energy.

随后,科学家们用能量等效的电子束(EB)和紫外线(UV)辐照纯聚氨酯丙烯酸酯，研究了经辐照的丙烯酸酯的结构和固化程度.双键转化率和凝胶含量的结果表明，在能量等效条件下，EB固化的固化程度高于UV固化。 

Furthermore, the energy supply mode was changed from one-time to multiple superimposition, which clarified that the in situ polymerisation effect of EB irradiation could produce a high curing degree.

此外，能源供应模式由一次性转变为多次叠加，这说明EB辐照的原位聚合效应可以产生较高的固化程度。

The study has been published in Progress in Organic Coatings, Volume 155, June 2021.

完整研究报告: Progress in Organic Coatings, Volume 155, June 2021.

 

英文原文引自: https://www.european-coatings.com/articles/2021/07/curing-and-properties-of-urethane-acrylates-with-different-functionalities

图源: kwanchaift - stock.adobe.com (symbol image)

翻译:九维-VL. 翻译内容未经同意不得转载.