用KH-560硅烷偶联剂对SrAl2O4∶Eu2+,Dy3+长余辉发光粉末进行表面改性。通过测定改性样品表面的吸油值确定偶联剂添加量,并利用傅里叶红外光谱仪、扫描电子显微镜、接触角测量仪及长余辉荧光粉测试仪分别表征样品改性前后的性能变化。结果表明,硅烷偶联剂添加量为3%时,SrAl2O4∶Eu2+,Dy3+长余辉发光粉末吸油值减小至33.25%;部分偶联剂以Al-O-Si的方式接枝在长余辉发光粉末表面;改性后长余辉发光粉末疏水性提高,发光亮度略微降低。
SrAl2O4∶Eu2+,Dy3+ long afterglow luminescent powders were modified by KH-560 silane coupling agent.The addition amount of coupling agent was determined by measuring the oil absorption value of the modified samples,and the changes before and after modification were characterized by fourier transmission infrared spectrometer,scanning electron microscope,contact angle measuring instrument and a long-afterglow luminescent tester.The results showed that when the addition of silane coupling agent was 3%,the oil absorption value of the powders decreased to 33.25%,and some coupling agents were grafted on the surface of the powders in the way of Al-O-Si.After modification,the hydrophobicity of the powders was improved,and luminescence brightness was slightly reduced.
[1] 李卫珍,吴鸣,徐燃霞,等.稀土铝酸锶夜光材料的制备工艺[J].江南大学学报(自然科学版),2009,8(3):340-344.
[2] He J H,Ma W S,Tan S Z,et al.Study on surface modification of ultrafine inorganic antibacterial particles[J].Applied Surface Science,2005,241(3-4):279-286.
[3] Novakov I A,Dang N K,Vaniev M A,et al.ChemInform abstract:on the stabilization and methods for modification of nanosize particles used for the preparation of polymer-inorganic nanocomposites[J].Cheminform,2014,45(12):276-284.
[4] 郭云亮,张涑戎,李立平.偶联剂的种类和特点及应用[J].橡胶工业,2003,50(11):692-696.
[5] 张国龙,王宁峰,铁生年,等.纳米氧化镁在丙二醇中的分散及稳定性研究[J].无机盐工业,2015,47(6):39-42.
[6] 王念贻.硅烷偶联剂改性氢氧化镁及其在EVA中的应用[D].西安:西安电子科技大学,2014.
[7] 朱庆英,莫永才.稀土偶联剂对碳酸钙表面改性的研究[J].塑料科技,2006,34(5):48-51.
[8] 徐明媚.聚丙烯腈/改性羟基磷灰石共混复合膜改性工艺[J].大连工业大学学报,2013(4):297-301.
[9] 香豆素类光色转换剂对夜光纤维用SrAl2O4∶Eu2+,Dy3+的光色红移影响研究[D].江南大学,2018.
[10] 吕兴栋,舒万艮.碱土铝酸盐长余辉发光材料的有机包覆及其表征[J].应用化学,2005(6):638-642.
[11] 郭斌,李秀辉,沈理忠,等.乙烯基硅烷偶联剂表面改性铝酸盐长余辉发光颜料的研究[J].涂料工业,2007,37(10):21-24.
[12] 张世鹏,铁生年.KH-570硅烷偶联剂表面改性微硅粉分散性研究[J].人工晶体学报,2018,47;237(7):103-108.
[13] 韩卫,甄卫军,李进,等.哈密长石粉体的硅烷表面改性及表征[J].中国粉体技术,2013,19(4):14-17.
[14] 葛明桥,赵菊梅,郭雪峰.稀土铝酸锶夜光纤维的光色特性[J].纺织学报,2009,30(5):1-5.
[15] 罗军,张开砚,李梦娟,等.静电纺稀土铝酸锶发光纳米短纤维的制备与表征[J].纺织学报,2015(1):1-5.
[16] 史晨,侯雪斌,晋阳,等.长余辉发光再生纤维素纤维的制备[J].纺织学报,2016(12):1-5.