摘要
以紫外光吸收剂4,4′-二羟基二苯甲酮(DHBP)为原料,合成了一种新型的苯并噁嗪(UV-Bz),研究表明其热固化产物UV-PBz是一种良好的紫外光吸收剂。研究了将UV-PBz涂覆在聚苯撑苯并二噁唑(PBO)纤维表面对改善PBO纤维光老化性能的影响。采用傅里叶变换红外光谱、核磁共振氢谱对UV-Bz和UV-PBz的结构进行了表征,用紫外-可见吸收光谱、扫描电子显微镜、拉伸强度测试研究了PBO纤维的光老化性能。研究表明:UV-PBz具有与DHBP相似的吸收紫外光的功能,在波长为310nm紫外光区有较宽的吸收峰;UV-PBz可以牢固地附着在PBO纤维表面,并且可以明显提升PBO纤维的抗紫外光老化性能。
A new benzoxazine UV-Bz was synthesized using ultraviolet absorber 4,4Cdihydroxybenzophenone （DHBP） as material. The corresponding polymer （UV-PBz） obtained by thermal curing of UV-Bz, was a good ultraviolet absorber. Then, UV-PBz was coated on the surface of poly （benzoxazole） （PBO） fiber to study the effect of UV-PBz on the improving photoaging stability of PBO fiber. Fourier Transform Infrared spectra （FT-IR） and 1H-Nuclear Magnetic Resonance （1H-NMR） were used to characterize the structure of UV-Bz and UV-PBz. UV-Vis spectra, Scanning Electron Microscope （SEM） and tensile strength test were taken to characterize the photoaging stability of poly （benzoxazole）（PBO） fiber. Results showed that UV-PBz had a wide absorption at the wavelength of about 310 nm. UV-PBz could be coated steadily on the surface of PBO fiber and the photoaging stability of PBO fiber was obviously improved by coating UV-PBz.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2015年第3期319-324,共6页
Journal of Functional Polymers
