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纳米结晶纤维素改性水性聚氨酯的抗紫外老化性能?

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将有机硅偶联剂改性后的纳米结晶纤维素（ NCC）与水性聚氨酯（ WPU）基材混合制成结构均匀的NCC／WPU复合材料，然后采用扫描电子显微镜（ SEM）、傅立叶变换红外光谱仪（ FT?IR）等对NCC／WPU复合材料进行表征并分析复合材料抗紫外光老化性能的改善效果。结果表明，改性NCC的添加导致WPU基材的耐黄变性能和耐磨性显著提高，用质量分数为1?5％的改性NCC制备所得的NCC／WPU复合材料在受到168 h的紫外辐射处理后其黄变程度减轻44?2％，磨损量下降63?6％。
UV-Aging Resistance of Waterborne Polyurethane Modified by Nanocrystalline Cellulose
The nanocrystalline cellulose ( NCC ) modified by organic silicon coupling agent was used to prepare the uniform composites with waterborne polyurethane ( WPU) . The NCC/WPU composites were character?ized by scanning electron microscope ( SEM) and Fourier transform infrared spectrometer ( FT?IR) . The improve?ments of UV?aging resistance of the NCC/WPU composites were analyzed. The results showed that the anti?yellowing property and abrasion resistance of WPU substrate were enhanced by the addition of modified NCC signifi?cantly. The extent of yellowing (168h of UV irradiation) of the NCC/WPU composite with 1?5%modified NCC was reduced by 44?2% and the abrasion loss of that composite was decreased by 63?6%.

nanocrystalline cellulosewaterborne polyurethaneUV-aging resistanceyellowingabrasion loss

张浩、辛长征、李姝汶、仝瑞芳

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河南工程学院材料与化学工程学院 郑州450000

纳米结晶纤维素 水性聚氨酯 抗紫外光老化 黄变 磨损量

河南省高等学校重点科研项目河南工程学院博士基金

15A430019D2015016

2016

聚氨酯工业
中国聚氨酯工业协会 江苏省化工研究所有限公司

聚氨酯工业

CSTPCD北大核心
影响因子：0.507
ISSN：1005-1902
年,卷(期)：2016.31(5)
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