Yin Xuan, Li Xiaoyu, Luo Yunjun
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Polymers (Basel). 2017 Oct 8;9(10):492. doi: 10.3390/polym9100492.
Fluorescent and flame-retardant two-component waterborne polyurethane coatings were synthesized using 1,5-dihydroxy naphthalene, a halogen-free polyphosphate and a hydrophilic curing agent, and their properties were systematically characterized. The average particle sizes and zeta potential values were below 170 nm and -30 mV. Meanwhile, the multifunctional two-component waterborne polyurethane coatings had strong fluorescence intensities. When comparing with the coatings with 0.5 wt % 1,5-dihydroxy naphthalene, the coatings with 1.0 wt % 1,5-dihydroxy naphthalene had a stronger microphase separation. Interestingly, the thermostability of the multifunctional coatings was remarkably improved through 1.0 wt % 1,5-dihydroxy naphthalene, and besides it belonged to nonflammable materials. Additionally, all of the coating films passed the solvent resistance testing. These samples with different amounts of 1,5-dihydroxy naphthalene are environmental friendly, especially applications that require transparent and fluorescent coatings.
采用1,5 - 二羟基萘、一种无卤聚磷酸盐和亲水性固化剂合成了荧光和阻燃双组分水性聚氨酯涂料，并对其性能进行了系统表征。平均粒径和zeta电位值分别低于170 nm和 - 30 mV。同时，多功能双组分水性聚氨酯涂料具有较强的荧光强度。与含有0.5 wt% 1,5 - 二羟基萘的涂料相比，含有1.0 wt% 1,5 - 二羟基萘的涂料具有更强的微相分离。有趣的是，通过添加1.0 wt% 1,5 - 二羟基萘，多功能涂料的热稳定性得到显著提高，并且它属于不燃材料。此外，所有涂膜均通过了耐溶剂性测试。这些含有不同量1,5 - 二羟基萘的样品具有环境友好性，尤其适用于需要透明和荧光涂料的应用。
