松香基荧光水性聚氨酯的制备及性能

作者：Yan Chengfei; Yu Caili^*; Zhang Fa'ai

来源：Huagong Jinzhan/Chemical Industry and Engineering Progress, 2022, 41(11): 6061-6067.

DOI：10.16085/j.issn.1000-6613.2022-0112

• fluorescent intensity
• rosin ester
• UV protection performance
• waterborne polyurethane

Rosin-based fluorescent waterborne polyurethane emulsion (FWPU) with good stability was successfully prepared using isophorone diisocyanate (IPDI), ester (RAG) of acrylic rosin adduct and 2-hydroxyethyl methacrylate as raw materials, dihydroxymethyl propyl acid (DMPA) as hydrophilic chain extender and 5,7-dihydroxy-4-methyl coumarin (DHMC) as fluorescent chain extender. The structure of FWPU was characterized by 1H NMR, Infrared spectrum and UV-visible spectroscopy, and the effects of the amount of DHMC and quenching agent 1,4-hydroquinone (HQ) on the fluorescence performance of FWPU were discussed. The UV protection performance (UPF) of polyurethane film was tested. The results showed that DHMC was successfully linked onto the polyurethane main chain. With the increase of the dosage of DHMC, the fluorescence intensity of FWPU increased gradually, and the maximum fluorescence intensity was 5002 when the dosage was 1%. Compared with DHMC, the fluorescence intensity of FWPU increased significantly. The fluorescence quenching effect of HQ on FWPU was obvious. With the addition of DHMC, the UPF value of polyurethane increased from 6.86 to 12.27, and the UV protection performance was improved as well as the water resistance. ? 2022 Chemical Industry Press.

• 单位
  桂林理工大学