新型热固化型紫外光吸收剂的制备及其在PBO纤维上的应用  

Preparation of A Novel Thermosetting Ultraviolet Absorber and Its Application on PBO Fiber

作　　者：周超[1] 陈丹丹[1] 张侃[1] 庄启昕[1] 周云超[1] 刘小云[1] 

机构地区：[1]华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海200237

出　　处：《功能高分子学报》2015年第3期319-324,共6页Journal of Functional Polymers

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.

关 键 词：苯并噁嗪 紫外光吸收剂 光老化 PBO纤维 

分 类 号：TB34[一般工业技术—材料科学与工程]