摘要
利用硅烷偶联剂KH-570对纳米SiO_2进行表面改性,然后将其与光固化原料混合,制备了聚氨酯丙烯酸酯/纳米SiO_2杂化材料。讨论了纳米SiO_2含量对杂化材料性能的影响,并通过紫外-可见光谱、红外光谱及热重分析对杂化材料进行了表征和测试。结果表明,当w(SiO_2)≤3%时,杂化材料的透明性和硬度均较高,光透过率可达95%以上,硬度值可达6H,且杂化材料的耐磨性、耐冲击性、耐热性均随着纳米SiO_2含量增加而变优,同时还表现出良好的耐溶剂性;当w(SiO_2)>3%时,杂化材料各项性能均会下降。
Nano-SiO2 was modified using silicane coupling agent KH-570, and then mixed with a light-cured material, the UV-curable polyurethane acrylate/nano-SiO2 hybrid materials were prepared, The effects of the dosages of nano-SiO2 on the properties of UV-curable hybrid materials were discussed. The UV-curable hybrid materials were characterized and tested by ultraviolet-visible absorption spectroscopy, infrared spectrum and thermal gravimetric analysis （TG）. The results indicated that transparency and hardness of the UV-curable hybrid material was high, light transmittance was over 95%, hardness was up to 6H with w （ SiO2 ） ≤ 3%. The wear resistance, impact resistance, heat resistance of the hybrid became excellent with the increase of nano-SiO2, and photosensitivity and solvent resist- ance were also good. The performances of the UV-curable hvbrid materials were decreased with w（SiO2）〉3%.
出处
《聚氨酯工业》
北大核心
2015年第6期20-23,共4页
Polyurethane Industry
基金
广西研究生教育创新计划项目(YCSZ 2015208)
